AbsListView.java revision f3c2edaa213e6d8c779ab819ff630b4ce389007c
19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2006 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you may not use this file except in compliance with the License. 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You may obtain a copy of the License at 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License. 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpackage android.widget; 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1979ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powellimport com.android.internal.R; 2079ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.Context; 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.res.TypedArray; 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.graphics.Canvas; 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.graphics.Rect; 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.graphics.drawable.Drawable; 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.graphics.drawable.TransitionDrawable; 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.Debug; 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.Handler; 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.Parcel; 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.Parcelable; 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.text.Editable; 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.text.TextUtils; 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.text.TextWatcher; 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.AttributeSet; 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.Gravity; 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.HapticFeedbackConstants; 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.KeyEvent; 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.LayoutInflater; 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.MotionEvent; 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.VelocityTracker; 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.View; 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.ViewConfiguration; 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.ViewDebug; 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.ViewGroup; 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.ViewTreeObserver; 4679ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powellimport android.view.ContextMenu.ContextMenuInfo; 471bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackbornimport android.view.inputmethod.BaseInputConnection; 48b2a3dd88a53cc8c6d19f6dc8ec4f3d6c4abd9b54The Android Open Source Projectimport android.view.inputmethod.EditorInfo; 49b2a3dd88a53cc8c6d19f6dc8ec4f3d6c4abd9b54The Android Open Source Projectimport android.view.inputmethod.InputConnection; 501bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackbornimport android.view.inputmethod.InputConnectionWrapper; 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.inputmethod.InputMethodManager; 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.util.ArrayList; 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.util.List; 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 57d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy * Base class that can be used to implement virtualized lists of items. A list does 58d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy * not have a spatial definition here. For instance, subclases of this class can 59d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy * display the content of the list in a grid, in a carousel, as stack, etc. 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#AbsListView_listSelector 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#AbsListView_drawSelectorOnTop 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#AbsListView_stackFromBottom 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#AbsListView_scrollingCache 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#AbsListView_textFilterEnabled 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#AbsListView_transcriptMode 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#AbsListView_cacheColorHint 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#AbsListView_fastScrollEnabled 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#AbsListView_smoothScrollbar 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic abstract class AbsListView extends AdapterView<ListAdapter> implements TextWatcher, 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ViewTreeObserver.OnGlobalLayoutListener, Filter.FilterListener, 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ViewTreeObserver.OnTouchModeChangeListener { 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Disables the transcript mode. 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setTranscriptMode(int) 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final int TRANSCRIPT_MODE_DISABLED = 0; 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The list will automatically scroll to the bottom when a data set change 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * notification is received and only if the last item is already visible 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * on screen. 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setTranscriptMode(int) 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final int TRANSCRIPT_MODE_NORMAL = 1; 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The list will automatically scroll to the bottom, no matter what items 910a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy * are currently visible. 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setTranscriptMode(int) 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final int TRANSCRIPT_MODE_ALWAYS_SCROLL = 2; 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates that we are not in the middle of a touch gesture 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static final int TOUCH_MODE_REST = -1; 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates we just received the touch event and we are waiting to see if the it is a tap or a 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * scroll gesture. 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static final int TOUCH_MODE_DOWN = 0; 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates the touch has been recognized as a tap and we are now waiting to see if the touch 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * is a longpress 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static final int TOUCH_MODE_TAP = 1; 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates we have waited for everything we can wait for, but the user's finger is still down 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static final int TOUCH_MODE_DONE_WAITING = 2; 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates the touch gesture is a scroll 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static final int TOUCH_MODE_SCROLL = 3; 12379ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates the view is in the process of being flung 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static final int TOUCH_MODE_FLING = 4; 1280a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 13079ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell * Indicates the touch gesture is an overscroll - a scroll beyond the beginning or end. 13179ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell */ 13279ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell static final int TOUCH_MODE_OVERSCROLL = 5; 13379ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell 13479ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell /** 13579ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell * Indicates the view is being flung outside of normal content bounds 13679ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell * and will spring back. 13779ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell */ 13879ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell static final int TOUCH_MODE_OVERFLING = 6; 13979ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell 14079ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell /** 1419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Regular layout - usually an unsolicited layout from the view system 1429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static final int LAYOUT_NORMAL = 0; 1449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Show the first item 1479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static final int LAYOUT_FORCE_TOP = 1; 1499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Force the selected item to be on somewhere on the screen 1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static final int LAYOUT_SET_SELECTION = 2; 1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Show the last item 1579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static final int LAYOUT_FORCE_BOTTOM = 3; 1599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Make a mSelectedItem appear in a specific location and build the rest of 1629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the views from there. The top is specified by mSpecificTop. 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static final int LAYOUT_SPECIFIC = 4; 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Layout to sync as a result of a data change. Restore mSyncPosition to have its top 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * at mSpecificTop 1699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static final int LAYOUT_SYNC = 5; 1719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Layout as a result of using the navigation keys 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static final int LAYOUT_MOVE_SELECTION = 6; 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Controls how the next layout will happen 1799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mLayoutMode = LAYOUT_NORMAL; 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Should be used by subclasses to listen to changes in the dataset 1849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project AdapterDataSetObserver mDataSetObserver; 1869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The adapter containing the data to be displayed by this view 1899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ListAdapter mAdapter; 1919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates whether the list selector should be drawn on top of the children or behind 1949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean mDrawSelectorOnTop = false; 1969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The drawable used to draw the selector 1999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Drawable mSelector; 2019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Defines the selector's location and dimension at drawing time 2049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Rect mSelectorRect = new Rect(); 2069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The data set used to store unused views that should be reused during the next layout 2099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to avoid creating new ones 2109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final RecycleBin mRecycler = new RecycleBin(); 2129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The selection's left padding 2159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mSelectionLeftPadding = 0; 2179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The selection's top padding 2209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mSelectionTopPadding = 0; 2229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The selection's right padding 2259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mSelectionRightPadding = 0; 2279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The selection's bottom padding 2309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mSelectionBottomPadding = 0; 2329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This view's padding 2359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Rect mListPadding = new Rect(); 2379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Subclasses must retain their measure spec from onMeasure() into this member 2409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mWidthMeasureSpec = 0; 2429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The top scroll indicator 2459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View mScrollUp; 2479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The down scroll indicator 2509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View mScrollDown; 2529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * When the view is scrolling, this flag is set to true to indicate subclasses that 2559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the drawing cache was enabled on the children 2569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean mCachingStarted; 2589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The position of the view that received the down motion event 2619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mMotionPosition; 2639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The offset to the top of the mMotionPosition view when the down motion event was received 2669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mMotionViewOriginalTop; 2689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The desired offset to the top of the mMotionPosition view after a scroll 2719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mMotionViewNewTop; 2739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The X value associated with the the down motion event 2769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mMotionX; 2789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The Y value associated with the the down motion event 2819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mMotionY; 2839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * One of TOUCH_MODE_REST, TOUCH_MODE_DOWN, TOUCH_MODE_TAP, TOUCH_MODE_SCROLL, or 2869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * TOUCH_MODE_DONE_WAITING 2879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mTouchMode = TOUCH_MODE_REST; 2899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Y value from on the previous motion event (if any) 2929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mLastY; 2949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * How far the finger moved before we started scrolling 2979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mMotionCorrection; 2999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Determines speed during touch scrolling 3029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private VelocityTracker mVelocityTracker; 3049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Handles one frame of a fling 3079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private FlingRunnable mFlingRunnable; 309458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 310458034799861fef47e00d85d528b4dac5e00bd51Adam Powell /** 311458034799861fef47e00d85d528b4dac5e00bd51Adam Powell * Handles scrolling between positions within the list. 312458034799861fef47e00d85d528b4dac5e00bd51Adam Powell */ 313458034799861fef47e00d85d528b4dac5e00bd51Adam Powell private PositionScroller mPositionScroller; 3149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The offset in pixels form the top of the AdapterView to the top 3179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * of the currently selected view. Used to save and restore state. 3189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mSelectedTop = 0; 3209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates whether the list is stacked from the bottom edge or 3239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the top edge. 3249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean mStackFromBottom; 3269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * When set to true, the list automatically discards the children's 3299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * bitmap cache after scrolling. 3309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean mScrollingCacheEnabled; 3320a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy 3339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Whether or not to enable the fast scroll feature on this list 3359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean mFastScrollEnabled; 3379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Optional callback to notify client when scroll position has changed 3409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private OnScrollListener mOnScrollListener; 3429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Keeps track of our accessory window 3459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project PopupWindow mPopup; 3479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Used with type filter window 3509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project EditText mTextFilter; 3529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates whether to use pixels-based or position-based scrollbar 3559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * properties. 3569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mSmoothScrollbarEnabled = true; 3589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates that this view supports filtering 3619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mTextFilterEnabled; 3639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates that this view is currently displaying a filtered view of the data 3669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mFiltered; 3689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Rectangle used for hit testing children 3719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private Rect mTouchFrame; 3739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The position to resurrect the selected position to. 3769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mResurrectToPosition = INVALID_POSITION; 3789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private ContextMenuInfo mContextMenuInfo = null; 3800b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell 3810b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell /** 3820b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell * Maximum distance to overscroll by 3830b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell */ 38484222e04252720cf681032e865db526ce4a612a4Adam Powell int mOverscrollMax; 3850b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell 3860b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell /** 3870b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell * Content height divided by this is the overscroll limit. 3880b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell */ 38984222e04252720cf681032e865db526ce4a612a4Adam Powell static final int OVERSCROLL_LIMIT_DIVISOR = 3; 3909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Used to request a layout when we changed touch mode 3939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int TOUCH_MODE_UNKNOWN = -1; 3959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int TOUCH_MODE_ON = 0; 3969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int TOUCH_MODE_OFF = 1; 3979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mLastTouchMode = TOUCH_MODE_UNKNOWN; 3999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final boolean PROFILE_SCROLLING = false; 4019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mScrollProfilingStarted = false; 4029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final boolean PROFILE_FLINGING = false; 4049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mFlingProfilingStarted = false; 4059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The last CheckForLongPress runnable we posted, if any 4089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private CheckForLongPress mPendingCheckForLongPress; 4109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The last CheckForTap runnable we posted, if any 4139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private Runnable mPendingCheckForTap; 4150a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy 4169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The last CheckForKeyLongPress runnable we posted, if any 4189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private CheckForKeyLongPress mPendingCheckForKeyLongPress; 4209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Acts upon click 4239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private AbsListView.PerformClick mPerformClick; 4259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This view is in transcript mode -- it shows the bottom of the list when the data 4289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * changes 4299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mTranscriptMode; 4319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates that this list is always drawn on top of a solid, single-color, opaque 4349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * background 4359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mCacheColorHint; 4379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The select child's view (from the adapter's getView) is enabled. 4409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mIsChildViewEnabled; 4429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The last scroll state reported to clients through {@link OnScrollListener}. 4459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mLastScrollState = OnScrollListener.SCROLL_STATE_IDLE; 4479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Helper object that renders and controls the fast scroll thumb. 4509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private FastScroller mFastScroller; 4529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 453d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy private boolean mGlobalLayoutListenerAddedFilter; 4549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 455d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy private int mTouchSlop; 4569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private float mDensityScale; 4579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4581bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn private InputConnection mDefInputConnection; 4591bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn private InputConnectionWrapper mPublicInputConnection; 4606dfed24158b8fc9150abee23992db621cd82aa43Romain Guy 4616dfed24158b8fc9150abee23992db621cd82aa43Romain Guy private Runnable mClearScrollingCache; 4624296fc4d326447875c26a925f12b3935632f13bbRomain Guy private int mMinimumVelocity; 4634296fc4d326447875c26a925f12b3935632f13bbRomain Guy private int mMaximumVelocity; 46421875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy 46521875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy final boolean[] mIsScrap = new boolean[1]; 46624562487126b48c8ff39a42b76f3705f238da6c8Romain Guy 46724562487126b48c8ff39a42b76f3705f238da6c8Romain Guy // True when the popup should be hidden because of a call to 46824562487126b48c8ff39a42b76f3705f238da6c8Romain Guy // dispatchDisplayHint() 46924562487126b48c8ff39a42b76f3705f238da6c8Romain Guy private boolean mPopupHidden; 4704cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell 4714cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell /** 4724cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell * ID of the active pointer. This is used to retain consistency during 4734cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell * drags/flings if multiple pointers are used. 4744cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell */ 4754cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell private int mActivePointerId = INVALID_POINTER; 4764cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell 4774cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell /** 4784cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell * Sentinel value for no current active pointer. 4794cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell * Used by {@link #mActivePointerId}. 4804cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell */ 4814cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell private static final int INVALID_POINTER = -1; 4826dfed24158b8fc9150abee23992db621cd82aa43Romain Guy 4839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Interface definition for a callback to be invoked when the list or grid 4859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * has been scrolled. 4869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public interface OnScrollListener { 4889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The view is not scrolling. Note navigating the list using the trackball counts as 4919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * being in the idle state since these transitions are not animated. 4929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static int SCROLL_STATE_IDLE = 0; 4949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The user is scrolling using touch, and their finger is still on the screen 4979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static int SCROLL_STATE_TOUCH_SCROLL = 1; 4999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The user had previously been scrolling using touch and had performed a fling. The 5029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * animation is now coasting to a stop 5039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static int SCROLL_STATE_FLING = 2; 5059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Callback method to be invoked while the list view or grid view is being scrolled. If the 5089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * view is being scrolled, this method will be called before the next frame of the scroll is 5099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * rendered. In particular, it will be called before any calls to 5109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link Adapter#getView(int, View, ViewGroup)}. 5119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param view The view whose scroll state is being reported 5139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param scrollState The current scroll state. One of {@link #SCROLL_STATE_IDLE}, 5159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #SCROLL_STATE_TOUCH_SCROLL} or {@link #SCROLL_STATE_IDLE}. 5169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onScrollStateChanged(AbsListView view, int scrollState); 5189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Callback method to be invoked when the list or grid has been scrolled. This will be 5219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * called after the scroll has completed 5229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param view The view whose scroll state is being reported 5239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param firstVisibleItem the index of the first visible cell (ignore if 5249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * visibleItemCount == 0) 5259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param visibleItemCount the number of visible cells 5269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param totalItemCount the number of items in the list adaptor 5279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, 5299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int totalItemCount); 5309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public AbsListView(Context context) { 5339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(context); 5349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project initAbsListView(); 5359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setVerticalScrollBarEnabled(true); 5379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TypedArray a = context.obtainStyledAttributes(R.styleable.View); 5389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project initializeScrollbars(a); 5399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project a.recycle(); 5409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public AbsListView(Context context, AttributeSet attrs) { 5439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this(context, attrs, com.android.internal.R.attr.absListViewStyle); 5449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public AbsListView(Context context, AttributeSet attrs, int defStyle) { 5479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(context, attrs, defStyle); 5489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project initAbsListView(); 5499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TypedArray a = context.obtainStyledAttributes(attrs, 5519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project com.android.internal.R.styleable.AbsListView, defStyle, 0); 5529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Drawable d = a.getDrawable(com.android.internal.R.styleable.AbsListView_listSelector); 5549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (d != null) { 5559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelector(d); 5569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDrawSelectorOnTop = a.getBoolean( 5599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project com.android.internal.R.styleable.AbsListView_drawSelectorOnTop, false); 5609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean stackFromBottom = a.getBoolean(R.styleable.AbsListView_stackFromBottom, false); 5629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setStackFromBottom(stackFromBottom); 5639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean scrollingCacheEnabled = a.getBoolean(R.styleable.AbsListView_scrollingCache, true); 5659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setScrollingCacheEnabled(scrollingCacheEnabled); 5669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean useTextFilter = a.getBoolean(R.styleable.AbsListView_textFilterEnabled, false); 5689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setTextFilterEnabled(useTextFilter); 5699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int transcriptMode = a.getInt(R.styleable.AbsListView_transcriptMode, 5719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TRANSCRIPT_MODE_DISABLED); 5729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setTranscriptMode(transcriptMode); 5739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int color = a.getColor(R.styleable.AbsListView_cacheColorHint, 0); 5759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setCacheColorHint(color); 5760a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy 5779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean enableFastScroll = a.getBoolean(R.styleable.AbsListView_fastScrollEnabled, false); 5789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setFastScrollEnabled(enableFastScroll); 5799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean smoothScrollbar = a.getBoolean(R.styleable.AbsListView_smoothScrollbar, true); 5819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSmoothScrollbarEnabled(smoothScrollbar); 582d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy 5839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project a.recycle(); 5849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 586d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy private void initAbsListView() { 587d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy // Setting focusable in touch mode will set the focusable property to true 588df01607380c81e26c1c90129aa22b2e1118e2b71Romain Guy setClickable(true); 589d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy setFocusableInTouchMode(true); 590d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy setWillNotDraw(false); 591d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy setAlwaysDrawnWithCacheEnabled(false); 592d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy setScrollingCacheEnabled(true); 593d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy 5944296fc4d326447875c26a925f12b3935632f13bbRomain Guy final ViewConfiguration configuration = ViewConfiguration.get(mContext); 5954296fc4d326447875c26a925f12b3935632f13bbRomain Guy mTouchSlop = configuration.getScaledTouchSlop(); 5964296fc4d326447875c26a925f12b3935632f13bbRomain Guy mMinimumVelocity = configuration.getScaledMinimumFlingVelocity(); 5974296fc4d326447875c26a925f12b3935632f13bbRomain Guy mMaximumVelocity = configuration.getScaledMaximumFlingVelocity(); 598d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy mDensityScale = getContext().getResources().getDisplayMetrics().density; 599d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy } 6000a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy 601d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy /** 6020a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy * Enables fast scrolling by letting the user quickly scroll through lists by 6030a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy * dragging the fast scroll thumb. The adapter attached to the list may want 6049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to implement {@link SectionIndexer} if it wishes to display alphabet preview and 6050a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy * jump between sections of the list. 6069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see SectionIndexer 6079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #isFastScrollEnabled() 6089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param enabled whether or not to enable fast scrolling 6099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setFastScrollEnabled(boolean enabled) { 6119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFastScrollEnabled = enabled; 6129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (enabled) { 6139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mFastScroller == null) { 6149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFastScroller = new FastScroller(getContext(), this); 6159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 6179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mFastScroller != null) { 6189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFastScroller.stop(); 6199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFastScroller = null; 6209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6230a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy 6249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the current state of the fast scroll feature. 6269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setFastScrollEnabled(boolean) 6279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return true if fast scroll is enabled, false otherwise 6289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.ExportedProperty 6309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean isFastScrollEnabled() { 6319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mFastScrollEnabled; 6329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6330a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy 6349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * If fast scroll is visible, then don't draw the vertical scrollbar. 6360a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy * @hide 6379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 6399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected boolean isVerticalScrollBarHidden() { 6409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mFastScroller != null && mFastScroller.isVisible(); 6419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * When smooth scrollbar is enabled, the position and size of the scrollbar thumb 6459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * is computed based on the number of visible pixels in the visible items. This 6469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * however assumes that all list items have the same height. If you use a list in 6479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * which items have different heights, the scrollbar will change appearance as the 6489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * user scrolls through the list. To avoid this issue, you need to disable this 6499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * property. 6509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * When smooth scrollbar is disabled, the position and size of the scrollbar thumb 6529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * is based solely on the number of items in the adapter and the position of the 6539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * visible items inside the adapter. This provides a stable scrollbar as the user 6540a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy * navigates through a list of items with varying heights. 6559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param enabled Whether or not to enable smooth scrollbar. 6579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6580a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy * @see #setSmoothScrollbarEnabled(boolean) 6599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#AbsListView_smoothScrollbar 6609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setSmoothScrollbarEnabled(boolean enabled) { 6629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSmoothScrollbarEnabled = enabled; 6639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the current state of the fast scroll feature. 6679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True if smooth scrollbar is enabled is enabled, false otherwise. 6699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setSmoothScrollbarEnabled(boolean) 6719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.ExportedProperty 6739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean isSmoothScrollbarEnabled() { 6749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mSmoothScrollbarEnabled; 6759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Set the listener that will receive notifications every time the list scrolls. 6799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param l the scroll listener 6819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setOnScrollListener(OnScrollListener l) { 6839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnScrollListener = l; 6849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invokeOnItemScrollListener(); 6859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Notify our scroll listener (if there is one) of a change in scroll state 6899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void invokeOnItemScrollListener() { 6919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mFastScroller != null) { 6929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFastScroller.onScroll(this, mFirstPosition, getChildCount(), mItemCount); 6939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnScrollListener != null) { 6959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnScrollListener.onScroll(this, mFirstPosition, getChildCount(), mItemCount); 6969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates whether the children's drawing cache is used during a scroll. 7019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * By default, the drawing cache is enabled but this will consume more memory. 7029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return true if the scrolling cache is enabled, false otherwise 7049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setScrollingCacheEnabled(boolean) 7069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see View#setDrawingCacheEnabled(boolean) 7079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.ExportedProperty 7099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean isScrollingCacheEnabled() { 7109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mScrollingCacheEnabled; 7119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Enables or disables the children's drawing cache during a scroll. 7159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * By default, the drawing cache is enabled but this will use more memory. 7169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * When the scrolling cache is enabled, the caches are kept after the 7189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * first scrolling. You can manually clear the cache by calling 7199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.view.ViewGroup#setChildrenDrawingCacheEnabled(boolean)}. 7209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param enabled true to enable the scroll cache, false otherwise 7229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #isScrollingCacheEnabled() 7249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see View#setDrawingCacheEnabled(boolean) 7259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setScrollingCacheEnabled(boolean enabled) { 7279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mScrollingCacheEnabled && !enabled) { 7289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project clearScrollingCache(); 7299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mScrollingCacheEnabled = enabled; 7319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Enables or disables the type filter window. If enabled, typing when 7359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * this view has focus will filter the children to match the users input. 7369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Note that the {@link Adapter} used by this view must implement the 7379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link Filterable} interface. 7389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param textFilterEnabled true to enable type filtering, false otherwise 7409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see Filterable 7429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setTextFilterEnabled(boolean textFilterEnabled) { 7449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTextFilterEnabled = textFilterEnabled; 7459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates whether type filtering is enabled for this view 7499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return true if type filtering is enabled, false otherwise 7519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setTextFilterEnabled(boolean) 7539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see Filterable 7549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.ExportedProperty 7569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean isTextFilterEnabled() { 7579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mTextFilterEnabled; 7589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 7619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void getFocusedRect(Rect r) { 7629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View view = getSelectedView(); 7636bdbfcfa77177eb7c8905123f44f2fa5aa0f17b1Romain Guy if (view != null && view.getParent() == this) { 7649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the focused rectangle of the selected view offset into the 7659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // coordinate space of this view. 7669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project view.getFocusedRect(r); 7679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project offsetDescendantRectToMyCoords(view, r); 7689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 7699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // otherwise, just the norm 7709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.getFocusedRect(r); 7719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void useDefaultSelector() { 7759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelector(getResources().getDrawable( 7769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project com.android.internal.R.drawable.list_selector_background)); 7779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates whether the content of this view is pinned to, or stacked from, 7819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the bottom edge. 7829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return true if the content is stacked from the bottom edge, false otherwise 7849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.ExportedProperty 7869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean isStackFromBottom() { 7879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mStackFromBottom; 7889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * When stack from bottom is set to true, the list fills its content starting from 7929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the bottom of the view. 7939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param stackFromBottom true to pin the view's content to the bottom edge, 7959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * false to pin the view's content to the top edge 7969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setStackFromBottom(boolean stackFromBottom) { 7989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mStackFromBottom != stackFromBottom) { 7999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mStackFromBottom = stackFromBottom; 8009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayoutIfNecessary(); 8019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void requestLayoutIfNecessary() { 8059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (getChildCount() > 0) { 8069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project resetList(); 8079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 8089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invalidate(); 8099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static class SavedState extends BaseSavedState { 8139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project long selectedId; 8149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project long firstId; 8159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int viewTop; 8169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int position; 8179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int height; 8189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project String filter; 8199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 8219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Constructor called from {@link AbsListView#onSaveInstanceState()} 8229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 8239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project SavedState(Parcelable superState) { 8249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(superState); 8259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 8289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Constructor called from {@link #CREATOR} 8299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 8309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private SavedState(Parcel in) { 8319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(in); 8329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedId = in.readLong(); 8339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project firstId = in.readLong(); 8349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project viewTop = in.readInt(); 8359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project position = in.readInt(); 8369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project height = in.readInt(); 8379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project filter = in.readString(); 8389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 8419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void writeToParcel(Parcel out, int flags) { 8429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.writeToParcel(out, flags); 8439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project out.writeLong(selectedId); 8449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project out.writeLong(firstId); 8459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project out.writeInt(viewTop); 8469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project out.writeInt(position); 8479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project out.writeInt(height); 8489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project out.writeString(filter); 8499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 8529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public String toString() { 8539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return "AbsListView.SavedState{" 8549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + Integer.toHexString(System.identityHashCode(this)) 8559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + " selectedId=" + selectedId 8569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + " firstId=" + firstId 8579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + " viewTop=" + viewTop 8589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + " position=" + position 8599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + " height=" + height 8609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + " filter=" + filter + "}"; 8619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final Parcelable.Creator<SavedState> CREATOR 8649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project = new Parcelable.Creator<SavedState>() { 8659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public SavedState createFromParcel(Parcel in) { 8669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new SavedState(in); 8679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public SavedState[] newArray(int size) { 8709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new SavedState[size]; 8719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project }; 8739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 8769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Parcelable onSaveInstanceState() { 8779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 8789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This doesn't really make sense as the place to dismiss the 879f993ad5b89a8aa47fcbc7494811f45bb74cb8713Romain Guy * popups, but there don't seem to be any other useful hooks 8809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * that happen early enough to keep from getting complaints 8819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * about having leaked the window. 8829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 8839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dismissPopup(); 8849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Parcelable superState = super.onSaveInstanceState(); 8869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project SavedState ss = new SavedState(superState); 8889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean haveChildren = getChildCount() > 0; 8909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project long selectedId = getSelectedItemId(); 8919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ss.selectedId = selectedId; 8929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ss.height = getHeight(); 8939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (selectedId >= 0) { 8959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remember the selection 8969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ss.viewTop = mSelectedTop; 8979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ss.position = getSelectedItemPosition(); 8989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ss.firstId = INVALID_POSITION; 8999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 9009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (haveChildren) { 9019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remember the position of the first child 9029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View v = getChildAt(0); 9039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ss.viewTop = v.getTop(); 9049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ss.position = mFirstPosition; 9059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ss.firstId = mAdapter.getItemId(mFirstPosition); 9069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 9079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ss.viewTop = 0; 9089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ss.firstId = INVALID_POSITION; 9099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ss.position = 0; 9109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ss.filter = null; 9149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mFiltered) { 9159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final EditText textFilter = mTextFilter; 9169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (textFilter != null) { 9179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Editable filterText = textFilter.getText(); 9189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (filterText != null) { 9199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ss.filter = filterText.toString(); 9209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return ss; 9259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 9289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onRestoreInstanceState(Parcelable state) { 9299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project SavedState ss = (SavedState) state; 9309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.onRestoreInstanceState(ss.getSuperState()); 9329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDataChanged = true; 9339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSyncHeight = ss.height; 9359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (ss.selectedId >= 0) { 9379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNeedSync = true; 9389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSyncRowId = ss.selectedId; 9399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSyncPosition = ss.position; 9409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSpecificTop = ss.viewTop; 9419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSyncMode = SYNC_SELECTED_POSITION; 9429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (ss.firstId >= 0) { 9439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelectedPositionInt(INVALID_POSITION); 9449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Do this before setting mNeedSync since setNextSelectedPosition looks at mNeedSync 9459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setNextSelectedPositionInt(INVALID_POSITION); 9469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNeedSync = true; 9479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSyncRowId = ss.firstId; 9489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSyncPosition = ss.position; 9499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSpecificTop = ss.viewTop; 9509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSyncMode = SYNC_FIRST_POSITION; 9519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setFilterText(ss.filter); 9549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 9569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean acceptFilter() { 959d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy return mTextFilterEnabled && getAdapter() instanceof Filterable && 960d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy ((Filterable) getAdapter()).getFilter() != null; 9619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 9649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sets the initial value for the text filter. 9659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param filterText The text to use for the filter. 9660a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy * 9679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setTextFilterEnabled 9689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setFilterText(String filterText) { 9709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // TODO: Should we check for acceptFilter()? 9719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mTextFilterEnabled && !TextUtils.isEmpty(filterText)) { 9729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project createTextFilter(false); 9739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // This is going to call our listener onTextChanged, but we might not 9749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // be ready to bring up a window yet 9759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTextFilter.setText(filterText); 9769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTextFilter.setSelection(filterText.length()); 9779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mAdapter instanceof Filterable) { 9789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if mPopup is non-null, then onTextChanged will do the filtering 9799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mPopup == null) { 9809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Filter f = ((Filterable) mAdapter).getFilter(); 9819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project f.filter(filterText); 9829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Set filtered to true so we will display the filter window when our main 9849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // window is ready 9859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFiltered = true; 9869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDataSetObserver.clearSavedState(); 9879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 9920a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy * Returns the list's text filter, if available. 9939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the list's text filter or null if filtering isn't enabled 9949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public CharSequence getTextFilter() { 9969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mTextFilterEnabled && mTextFilter != null) { 9979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mTextFilter.getText(); 9989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; 10009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10010a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy 10029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 10039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onFocusChanged(boolean gainFocus, int direction, Rect previouslyFocusedRect) { 10049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.onFocusChanged(gainFocus, direction, previouslyFocusedRect); 10059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (gainFocus && mSelectedPosition < 0 && !isInTouchMode()) { 10069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project resurrectSelection(); 10079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 10119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void requestLayout() { 10129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mBlockLayoutRequests && !mInLayout) { 10139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.requestLayout(); 10149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 10189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The list is empty. Clear everything out. 10199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 10209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void resetList() { 10219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project removeAllViewsInLayout(); 10229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFirstPosition = 0; 10239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDataChanged = false; 10249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNeedSync = false; 10259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOldSelectedPosition = INVALID_POSITION; 10269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOldSelectedRowId = INVALID_ROW_ID; 10279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelectedPositionInt(INVALID_POSITION); 10289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setNextSelectedPositionInt(INVALID_POSITION); 10299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectedTop = 0; 10309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectorRect.setEmpty(); 10319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invalidate(); 10329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 10359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected int computeVerticalScrollExtent() { 10369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getChildCount(); 10379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (count > 0) { 10389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mSmoothScrollbarEnabled) { 10399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int extent = count * 100; 10409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View view = getChildAt(0); 10429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int top = view.getTop(); 10439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int height = view.getHeight(); 10449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (height > 0) { 10459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project extent += (top * 100) / height; 10469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project view = getChildAt(count - 1); 10499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int bottom = view.getBottom(); 10509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project height = view.getHeight(); 10519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (height > 0) { 10529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project extent -= ((bottom - getHeight()) * 100) / height; 10539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return extent; 10569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 10579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 1; 10589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 10619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 10649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected int computeVerticalScrollOffset() { 10659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int firstPosition = mFirstPosition; 10669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childCount = getChildCount(); 10679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (firstPosition >= 0 && childCount > 0) { 10689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mSmoothScrollbarEnabled) { 10699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View view = getChildAt(0); 10709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int top = view.getTop(); 10719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int height = view.getHeight(); 10729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (height > 0) { 10730b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell return Math.max(firstPosition * 100 - (top * 100) / height + 10740b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell (int)((float)mScrollY / getHeight() * mItemCount * 100), 0); 10759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 10779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int index; 10789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = mItemCount; 10799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (firstPosition == 0) { 10809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project index = 0; 10819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (firstPosition + childCount == count) { 10829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project index = count; 10839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 10849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project index = firstPosition + childCount / 2; 10859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (int) (firstPosition + childCount * (index / (float) count)); 10879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 10909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 10939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected int computeVerticalScrollRange() { 10940b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell int result; 10950b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell if (mSmoothScrollbarEnabled) { 10960b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell result = Math.max(mItemCount * 100, 0); 10970b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell if (mScrollY != 0) { 10980b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell // Compensate for overscroll 10990b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell result += Math.abs((int) ((float) mScrollY / getHeight() * mItemCount * 100)); 11000b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell } 11010b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell } else { 11020b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell result = mItemCount; 11030b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell } 11040b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell return result; 11059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 11089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected float getTopFadingEdgeStrength() { 11099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getChildCount(); 11109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final float fadeEdge = super.getTopFadingEdgeStrength(); 11119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (count == 0) { 11129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return fadeEdge; 11139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 11149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mFirstPosition > 0) { 11159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 1.0f; 11169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int top = getChildAt(0).getTop(); 11199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final float fadeLength = (float) getVerticalFadingEdgeLength(); 11209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return top < mPaddingTop ? (float) -(top - mPaddingTop) / fadeLength : fadeEdge; 11219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 11259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected float getBottomFadingEdgeStrength() { 11269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getChildCount(); 11279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final float fadeEdge = super.getBottomFadingEdgeStrength(); 11289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (count == 0) { 11299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return fadeEdge; 11309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 11319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mFirstPosition + count - 1 < mItemCount - 1) { 11329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 1.0f; 11339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int bottom = getChildAt(count - 1).getBottom(); 11369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int height = getHeight(); 11379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final float fadeLength = (float) getVerticalFadingEdgeLength(); 11389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return bottom > height - mPaddingBottom ? 11399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (float) (bottom - height + mPaddingBottom) / fadeLength : fadeEdge; 11409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 11449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 11459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mSelector == null) { 11469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project useDefaultSelector(); 11479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final Rect listPadding = mListPadding; 11499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project listPadding.left = mSelectionLeftPadding + mPaddingLeft; 11509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project listPadding.top = mSelectionTopPadding + mPaddingTop; 11519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project listPadding.right = mSelectionRightPadding + mPaddingRight; 11529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project listPadding.bottom = mSelectionBottomPadding + mPaddingBottom; 11539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1155d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy /** 1156d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy * Subclasses should NOT override this method but 1157d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy * {@link #layoutChildren()} instead. 1158d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy */ 11599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 11609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onLayout(boolean changed, int l, int t, int r, int b) { 11619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.onLayout(changed, l, t, r, b); 11629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInLayout = true; 1163f3c2edaa213e6d8c779ab819ff630b4ce389007cAdam Powell if (changed) { 1164f3c2edaa213e6d8c779ab819ff630b4ce389007cAdam Powell int childCount = getChildCount(); 1165f3c2edaa213e6d8c779ab819ff630b4ce389007cAdam Powell for (int i = 0; i < childCount; i++) { 1166f3c2edaa213e6d8c779ab819ff630b4ce389007cAdam Powell getChildAt(i).forceLayout(); 1167f3c2edaa213e6d8c779ab819ff630b4ce389007cAdam Powell } 1168f3c2edaa213e6d8c779ab819ff630b4ce389007cAdam Powell mRecycler.markChildrenDirty(); 1169f3c2edaa213e6d8c779ab819ff630b4ce389007cAdam Powell } 1170f3c2edaa213e6d8c779ab819ff630b4ce389007cAdam Powell 11719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project layoutChildren(); 11729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInLayout = false; 11730b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell 11740b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell mOverscrollMax = (b - t) / OVERSCROLL_LIMIT_DIVISOR; 11759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 11789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @hide 11799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 11809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 11819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected boolean setFrame(int left, int top, int right, int bottom) { 11829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean changed = super.setFrame(left, top, right, bottom); 11839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1184d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy if (changed) { 1185d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy // Reposition the popup when the frame has changed. This includes 1186d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy // translating the widget, not just changing its dimension. The 1187d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy // filter popup needs to follow the widget. 1188d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy final boolean visible = getWindowVisibility() == View.VISIBLE; 1189d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy if (mFiltered && visible && mPopup != null && mPopup.isShowing()) { 1190d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy positionPopup(); 1191d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy } 11929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return changed; 11959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1197d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy /** 1198d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy * Subclasses must override this method to layout their children. 1199d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy */ 12009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void layoutChildren() { 12019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void updateScrollIndicators() { 12049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mScrollUp != null) { 12059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean canScrollUp; 12069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // 0th element is not visible 12079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project canScrollUp = mFirstPosition > 0; 12089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // ... Or top of 0th element is not visible 12109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!canScrollUp) { 12119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (getChildCount() > 0) { 12129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View child = getChildAt(0); 12139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project canScrollUp = child.getTop() < mListPadding.top; 12149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mScrollUp.setVisibility(canScrollUp ? View.VISIBLE : View.INVISIBLE); 12189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mScrollDown != null) { 12219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean canScrollDown; 12229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int count = getChildCount(); 12239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Last item is not visible 12259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project canScrollDown = (mFirstPosition + count) < mItemCount; 12269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // ... Or bottom of the last element is not visible 12289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!canScrollDown && count > 0) { 12299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View child = getChildAt(count - 1); 12309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project canScrollDown = child.getBottom() > mBottom - mListPadding.bottom; 12319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mScrollDown.setVisibility(canScrollDown ? View.VISIBLE : View.INVISIBLE); 12349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 12389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.ExportedProperty 12399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public View getSelectedView() { 12409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mItemCount > 0 && mSelectedPosition >= 0) { 12419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return getChildAt(mSelectedPosition - mFirstPosition); 12429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 12439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; 12449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 12489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * List padding is the maximum of the normal view's padding and the padding of the selector. 12499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 12509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see android.view.View#getPaddingTop() 12519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getSelector() 12529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 12539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The top list padding. 12549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 12559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getListPaddingTop() { 12569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mListPadding.top; 12579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 12609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * List padding is the maximum of the normal view's padding and the padding of the selector. 12619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 12629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see android.view.View#getPaddingBottom() 12639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getSelector() 12649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 12659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The bottom list padding. 12669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 12679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getListPaddingBottom() { 12689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mListPadding.bottom; 12699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 12729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * List padding is the maximum of the normal view's padding and the padding of the selector. 12739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 12749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see android.view.View#getPaddingLeft() 12759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getSelector() 12769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 12779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The left list padding. 12789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 12799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getListPaddingLeft() { 12809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mListPadding.left; 12819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 12849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * List padding is the maximum of the normal view's padding and the padding of the selector. 12859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 12869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see android.view.View#getPaddingRight() 12879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getSelector() 12889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 12899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The right list padding. 12909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 12919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getListPaddingRight() { 12929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mListPadding.right; 12939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 12969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Get a view and have it show the data associated with the specified 12979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * position. This is called when we have already discovered that the view is 12989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * not available for reuse in the recycle bin. The only choices left are 12999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * converting an old view or making a new one. 13009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 13019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position The position to display 130221875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy * @param isScrap Array of at least 1 boolean, the first entry will become true if 130321875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy * the returned view was taken from the scrap heap, false if otherwise. 130421875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy * 13059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return A view displaying the data associated with the specified position 13069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 130721875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy View obtainView(int position, boolean[] isScrap) { 130821875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy isScrap[0] = false; 13099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View scrapView; 13109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project scrapView = mRecycler.getScrapView(position); 13129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View child; 13149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (scrapView != null) { 13159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (ViewDebug.TRACE_RECYCLER) { 13169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ViewDebug.trace(scrapView, ViewDebug.RecyclerTraceType.RECYCLE_FROM_SCRAP_HEAP, 13179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project position, -1); 13189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child = mAdapter.getView(position, scrapView, this); 13219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (ViewDebug.TRACE_RECYCLER) { 13239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ViewDebug.trace(child, ViewDebug.RecyclerTraceType.BIND_VIEW, 13249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project position, getChildCount()); 13259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child != scrapView) { 13289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mRecycler.addScrapView(scrapView); 13299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mCacheColorHint != 0) { 13309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.setDrawingCacheBackgroundColor(mCacheColorHint); 13319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (ViewDebug.TRACE_RECYCLER) { 13339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ViewDebug.trace(scrapView, ViewDebug.RecyclerTraceType.MOVE_TO_SCRAP_HEAP, 13349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project position, -1); 13359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 133621875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy } else { 1337a440b002aa59e1455bdfa2c5a1ca51c74bbc19acRomain Guy isScrap[0] = true; 1338a440b002aa59e1455bdfa2c5a1ca51c74bbc19acRomain Guy child.dispatchFinishTemporaryDetach(); 13399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 13419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child = mAdapter.getView(position, null, this); 13429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mCacheColorHint != 0) { 13439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.setDrawingCacheBackgroundColor(mCacheColorHint); 13449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (ViewDebug.TRACE_RECYCLER) { 13469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ViewDebug.trace(child, ViewDebug.RecyclerTraceType.NEW_VIEW, 13479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project position, getChildCount()); 13489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return child; 13529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void positionSelector(View sel) { 13559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final Rect selectorRect = mSelectorRect; 13569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectorRect.set(sel.getLeft(), sel.getTop(), sel.getRight(), sel.getBottom()); 13579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project positionSelector(selectorRect.left, selectorRect.top, selectorRect.right, 13589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectorRect.bottom); 13599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean isChildViewEnabled = mIsChildViewEnabled; 13619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (sel.isEnabled() != isChildViewEnabled) { 13629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mIsChildViewEnabled = !isChildViewEnabled; 13639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project refreshDrawableState(); 13649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void positionSelector(int l, int t, int r, int b) { 13689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectorRect.set(l - mSelectionLeftPadding, t - mSelectionTopPadding, r 13699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + mSelectionRightPadding, b + mSelectionBottomPadding); 13709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 13739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void dispatchDraw(Canvas canvas) { 13749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int saveCount = 0; 13759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean clipToPadding = (mGroupFlags & CLIP_TO_PADDING_MASK) == CLIP_TO_PADDING_MASK; 13769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (clipToPadding) { 13779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project saveCount = canvas.save(); 13789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int scrollX = mScrollX; 13799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int scrollY = mScrollY; 13809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project canvas.clipRect(scrollX + mPaddingLeft, scrollY + mPaddingTop, 13819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project scrollX + mRight - mLeft - mPaddingRight, 13829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project scrollY + mBottom - mTop - mPaddingBottom); 13839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mGroupFlags &= ~CLIP_TO_PADDING_MASK; 13849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean drawSelectorOnTop = mDrawSelectorOnTop; 13879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!drawSelectorOnTop) { 13889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project drawSelector(canvas); 13899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.dispatchDraw(canvas); 13929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (drawSelectorOnTop) { 13949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project drawSelector(canvas); 13959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (clipToPadding) { 13989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project canvas.restoreToCount(saveCount); 13999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mGroupFlags |= CLIP_TO_PADDING_MASK; 14009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 14049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onSizeChanged(int w, int h, int oldw, int oldh) { 14059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (getChildCount() > 0) { 14069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDataChanged = true; 14079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project rememberSyncState(); 14089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1409d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy 14109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mFastScroller != null) { 14119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFastScroller.onSizeChanged(w, h, oldw, oldh); 14129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True if the current touch mode requires that we draw the selector in the pressed 14179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * state. 14189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean touchModeDrawsInPressedState() { 14209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // FIXME use isPressed for this 14219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (mTouchMode) { 14229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case TOUCH_MODE_TAP: 14239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case TOUCH_MODE_DONE_WAITING: 14249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 14259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project default: 14269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 14279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates whether this view is in a state where the selector should be drawn. This will 14329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * happen if we have focus but are not in touch mode, or we are in the middle of displaying 14339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the pressed state for an item. 14349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True if the selector should be shown 14369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean shouldShowSelector() { 14389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (hasFocus() && !isInTouchMode()) || touchModeDrawsInPressedState(); 14399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void drawSelector(Canvas canvas) { 14429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (shouldShowSelector() && mSelectorRect != null && !mSelectorRect.isEmpty()) { 14439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final Drawable selector = mSelector; 14449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selector.setBounds(mSelectorRect); 14459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selector.draw(canvas); 14469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Controls whether the selection highlight drawable should be drawn on top of the item or 14519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * behind it. 14529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param onTop If true, the selector will be drawn on the item it is highlighting. The default 14549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * is false. 14559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#AbsListView_drawSelectorOnTop 14579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setDrawSelectorOnTop(boolean onTop) { 14599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDrawSelectorOnTop = onTop; 14609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Set a Drawable that should be used to highlight the currently selected item. 14649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param resID A Drawable resource to use as the selection highlight. 14669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#AbsListView_listSelector 14689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setSelector(int resID) { 14709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelector(getResources().getDrawable(resID)); 14719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setSelector(Drawable sel) { 14749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mSelector != null) { 14759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelector.setCallback(null); 14769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project unscheduleDrawable(mSelector); 14779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelector = sel; 14799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Rect padding = new Rect(); 14809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel.getPadding(padding); 14819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectionLeftPadding = padding.left; 14829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectionTopPadding = padding.top; 14839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectionRightPadding = padding.right; 14849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectionBottomPadding = padding.bottom; 14859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel.setCallback(this); 14869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel.setState(getDrawableState()); 14879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the selector {@link android.graphics.drawable.Drawable} that is used to draw the 14919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * selection in the list. 14929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the drawable used to display the selector 14949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Drawable getSelector() { 14969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mSelector; 14979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 15009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sets the selector state to "pressed" and posts a CheckForKeyLongPress to see if 15019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * this is a long press. 15029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 15039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void keyPressed() { 1504df01607380c81e26c1c90129aa22b2e1118e2b71Romain Guy if (!isEnabled() || !isClickable()) { 1505df01607380c81e26c1c90129aa22b2e1118e2b71Romain Guy return; 1506df01607380c81e26c1c90129aa22b2e1118e2b71Romain Guy } 1507df01607380c81e26c1c90129aa22b2e1118e2b71Romain Guy 15089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Drawable selector = mSelector; 15099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Rect selectorRect = mSelectorRect; 15109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (selector != null && (isFocused() || touchModeDrawsInPressedState()) 15119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project && selectorRect != null && !selectorRect.isEmpty()) { 15129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View v = getChildAt(mSelectedPosition - mFirstPosition); 15149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1515ba87e3e6c985e7175152993b5efcc7dd2f0e1c93The Android Open Source Project if (v != null) { 1516ba87e3e6c985e7175152993b5efcc7dd2f0e1c93The Android Open Source Project if (v.hasFocusable()) return; 1517ba87e3e6c985e7175152993b5efcc7dd2f0e1c93The Android Open Source Project v.setPressed(true); 1518ba87e3e6c985e7175152993b5efcc7dd2f0e1c93The Android Open Source Project } 15199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setPressed(true); 15209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean longClickable = isLongClickable(); 15229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Drawable d = selector.getCurrent(); 15239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (d != null && d instanceof TransitionDrawable) { 15249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (longClickable) { 1525df01607380c81e26c1c90129aa22b2e1118e2b71Romain Guy ((TransitionDrawable) d).startTransition( 1526df01607380c81e26c1c90129aa22b2e1118e2b71Romain Guy ViewConfiguration.getLongPressTimeout()); 15279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 15289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ((TransitionDrawable) d).resetTransition(); 15299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (longClickable && !mDataChanged) { 15329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mPendingCheckForKeyLongPress == null) { 15339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPendingCheckForKeyLongPress = new CheckForKeyLongPress(); 15349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPendingCheckForKeyLongPress.rememberWindowAttachCount(); 15369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project postDelayed(mPendingCheckForKeyLongPress, ViewConfiguration.getLongPressTimeout()); 15379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setScrollIndicators(View up, View down) { 15429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mScrollUp = up; 15439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mScrollDown = down; 15449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 15479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void drawableStateChanged() { 15489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.drawableStateChanged(); 15499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mSelector != null) { 15509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelector.setState(getDrawableState()); 15519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 15559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected int[] onCreateDrawableState(int extraSpace) { 15569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If the child view is enabled then do the default behavior. 15579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mIsChildViewEnabled) { 15589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Common case 15599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return super.onCreateDrawableState(extraSpace); 15609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // The selector uses this View's drawable state. The selected child view 15639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // is disabled, so we need to remove the enabled state from the drawable 15649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // states. 15659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int enabledState = ENABLED_STATE_SET[0]; 15669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If we don't have any extra space, it will return one of the static state arrays, 15689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // and clearing the enabled state on those arrays is a bad thing! If we specify 15699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // we need extra space, it will create+copy into a new array that safely mutable. 15709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int[] state = super.onCreateDrawableState(extraSpace + 1); 15719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int enabledPos = -1; 15729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = state.length - 1; i >= 0; i--) { 15739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (state[i] == enabledState) { 15749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project enabledPos = i; 15759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 15769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remove the enabled state 15809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (enabledPos >= 0) { 15819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project System.arraycopy(state, enabledPos + 1, state, enabledPos, 15829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project state.length - enabledPos - 1); 15839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15840a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy 15859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return state; 15869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 15899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean verifyDrawable(Drawable dr) { 15909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mSelector == dr || super.verifyDrawable(dr); 15919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 15949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onAttachedToWindow() { 15959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.onAttachedToWindow(); 15969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final ViewTreeObserver treeObserver = getViewTreeObserver(); 15989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (treeObserver != null) { 15999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project treeObserver.addOnTouchModeChangeListener(this); 1600d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy if (mTextFilterEnabled && mPopup != null && !mGlobalLayoutListenerAddedFilter) { 1601d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy treeObserver.addOnGlobalLayoutListener(this); 1602d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy } 16039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 16079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onDetachedFromWindow() { 16089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.onDetachedFromWindow(); 16099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16101f7f3c336a767802a0cada789f6b2055f45911dcRomain Guy // Dismiss the popup in case onSaveInstanceState() was not invoked 16111f7f3c336a767802a0cada789f6b2055f45911dcRomain Guy dismissPopup(); 16121f7f3c336a767802a0cada789f6b2055f45911dcRomain Guy 161321875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy // Detach any view left in the scrap heap 161421875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy mRecycler.clear(); 161521875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy 16169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final ViewTreeObserver treeObserver = getViewTreeObserver(); 16179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (treeObserver != null) { 16189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project treeObserver.removeOnTouchModeChangeListener(this); 1619d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy if (mTextFilterEnabled && mPopup != null) { 1620d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy treeObserver.removeGlobalOnLayoutListener(this); 1621d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy mGlobalLayoutListenerAddedFilter = false; 1622d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy } 16239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 16279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onWindowFocusChanged(boolean hasWindowFocus) { 16289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.onWindowFocusChanged(hasWindowFocus); 16299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int touchMode = isInTouchMode() ? TOUCH_MODE_ON : TOUCH_MODE_OFF; 16319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!hasWindowFocus) { 16339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setChildrenDrawingCacheEnabled(false); 1634670dd819425b44ab4cb7565a322fd21ab6e811f5Mark Wagner if (mFlingRunnable != null) { 1635670dd819425b44ab4cb7565a322fd21ab6e811f5Mark Wagner removeCallbacks(mFlingRunnable); 1636670dd819425b44ab4cb7565a322fd21ab6e811f5Mark Wagner // let the fling runnable report it's new state which 1637670dd819425b44ab4cb7565a322fd21ab6e811f5Mark Wagner // should be idle 1638670dd819425b44ab4cb7565a322fd21ab6e811f5Mark Wagner mFlingRunnable.endFling(); 1639458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (mScrollY != 0) { 1640458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mScrollY = 0; 1641458034799861fef47e00d85d528b4dac5e00bd51Adam Powell invalidate(); 1642458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 1643670dd819425b44ab4cb7565a322fd21ab6e811f5Mark Wagner } 16449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Always hide the type filter 16459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dismissPopup(); 16469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (touchMode == TOUCH_MODE_OFF) { 16489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remember the last selected element 16499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mResurrectToPosition = mSelectedPosition; 16509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 165297566043afdb714fd4eea6bb22898964e95f16bcAdam Powell if (mFiltered && !mPopupHidden) { 16539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Show the type filter only if a filter is in effect 16549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project showPopup(); 16559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If we changed touch mode since the last time we had focus 16589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (touchMode != mLastTouchMode && mLastTouchMode != TOUCH_MODE_UNKNOWN) { 16599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If we come back in trackball mode, we bring the selection back 16609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (touchMode == TOUCH_MODE_OFF) { 16619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // This will trigger a layout 16629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project resurrectSelection(); 16639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If we come back in touch mode, then we want to hide the selector 16659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 16669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project hideSelector(); 16679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutMode = LAYOUT_NORMAL; 16689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project layoutChildren(); 16699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLastTouchMode = touchMode; 16749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 16779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Creates the ContextMenuInfo returned from {@link #getContextMenuInfo()}. This 16789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * methods knows the view, position and ID of the item that received the 16799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * long press. 16809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 16819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param view The view that received the long press. 16829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position The position of the item that received the long press. 16839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param id The ID of the item that received the long press. 16849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The extra information that should be returned by 16859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #getContextMenuInfo()}. 16869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 16879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ContextMenuInfo createContextMenuInfo(View view, int position, long id) { 16889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new AdapterContextMenuInfo(view, position, id); 16899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 16929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * A base class for Runnables that will check that their view is still attached to 16939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the original window as when the Runnable was created. 16949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 16959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 16969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private class WindowRunnnable { 16979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mOriginalAttachCount; 16980a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy 16999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void rememberWindowAttachCount() { 17009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOriginalAttachCount = getWindowAttachCount(); 17019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17020a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy 17039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean sameWindow() { 17049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return hasWindowFocus() && getWindowAttachCount() == mOriginalAttachCount; 17059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17070a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy 17089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private class PerformClick extends WindowRunnnable implements Runnable { 17099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View mChild; 17109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mClickMotionPosition; 17119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void run() { 17139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // The data has changed since we posted this action in the event queue, 17149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // bail out before bad things happen 17159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mDataChanged) return; 17169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mAdapter != null && mItemCount > 0 && 1718c7426628dfcf5f667ef398235a70de37be3df01fAdam Powell mClickMotionPosition != INVALID_POSITION && 17199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mClickMotionPosition < mAdapter.getCount() && sameWindow()) { 17209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project performItemClick(mChild, mClickMotionPosition, getAdapter().getItemId( 17219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mClickMotionPosition)); 17229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private class CheckForLongPress extends WindowRunnnable implements Runnable { 17279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void run() { 17289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int motionPosition = mMotionPosition; 17299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getChildAt(motionPosition - mFirstPosition); 17309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child != null) { 17319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int longPressPosition = mMotionPosition; 17329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final long longPressId = mAdapter.getItemId(mMotionPosition); 17339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean handled = false; 17350a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy if (sameWindow() && !mDataChanged) { 17369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handled = performLongPress(child, longPressPosition, longPressId); 17379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (handled) { 17399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTouchMode = TOUCH_MODE_REST; 17409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setPressed(false); 17419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.setPressed(false); 17429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 17439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTouchMode = TOUCH_MODE_DONE_WAITING; 17449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17490a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy 17509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private class CheckForKeyLongPress extends WindowRunnnable implements Runnable { 17519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void run() { 17529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (isPressed() && mSelectedPosition >= 0) { 17539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int index = mSelectedPosition - mFirstPosition; 17549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View v = getChildAt(index); 17559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mDataChanged) { 17579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean handled = false; 17589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (sameWindow()) { 17599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handled = performLongPress(v, mSelectedPosition, mSelectedRowId); 17609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (handled) { 17629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setPressed(false); 17639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project v.setPressed(false); 17649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 17669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setPressed(false); 17679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (v != null) v.setPressed(false); 17689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean performLongPress(final View child, 17749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int longPressPosition, final long longPressId) { 17759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean handled = false; 17769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnItemLongClickListener != null) { 17789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handled = mOnItemLongClickListener.onItemLongClick(AbsListView.this, child, 17799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project longPressPosition, longPressId); 17809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!handled) { 17829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mContextMenuInfo = createContextMenuInfo(child, longPressPosition, longPressId); 17839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handled = super.showContextMenuForChild(AbsListView.this); 17849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (handled) { 17869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 17879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return handled; 17899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 17929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected ContextMenuInfo getContextMenuInfo() { 17939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mContextMenuInfo; 17949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 17979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean showContextMenuForChild(View originalView) { 17989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int longPressPosition = getPositionForView(originalView); 17999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (longPressPosition >= 0) { 18009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final long longPressId = mAdapter.getItemId(longPressPosition); 18019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean handled = false; 18029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnItemLongClickListener != null) { 18049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handled = mOnItemLongClickListener.onItemLongClick(AbsListView.this, originalView, 18059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project longPressPosition, longPressId); 18069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!handled) { 18089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mContextMenuInfo = createContextMenuInfo( 18099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project getChildAt(longPressPosition - mFirstPosition), 18109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project longPressPosition, longPressId); 18119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handled = super.showContextMenuForChild(originalView); 18129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return handled; 18159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 18179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 1820df01607380c81e26c1c90129aa22b2e1118e2b71Romain Guy public boolean onKeyDown(int keyCode, KeyEvent event) { 1821df01607380c81e26c1c90129aa22b2e1118e2b71Romain Guy return false; 1822df01607380c81e26c1c90129aa22b2e1118e2b71Romain Guy } 1823df01607380c81e26c1c90129aa22b2e1118e2b71Romain Guy 1824df01607380c81e26c1c90129aa22b2e1118e2b71Romain Guy @Override 18259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean onKeyUp(int keyCode, KeyEvent event) { 18269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (keyCode) { 18279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_DPAD_CENTER: 18289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_ENTER: 1829dd753ae6115fdcb389b5abd8320245228b2e1d2dRomain Guy if (!isEnabled()) { 1830dd753ae6115fdcb389b5abd8320245228b2e1d2dRomain Guy return true; 1831dd753ae6115fdcb389b5abd8320245228b2e1d2dRomain Guy } 1832df01607380c81e26c1c90129aa22b2e1118e2b71Romain Guy if (isClickable() && isPressed() && 1833dd753ae6115fdcb389b5abd8320245228b2e1d2dRomain Guy mSelectedPosition >= 0 && mAdapter != null && 18349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectedPosition < mAdapter.getCount()) { 1835dd753ae6115fdcb389b5abd8320245228b2e1d2dRomain Guy 18369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View view = getChildAt(mSelectedPosition - mFirstPosition); 18379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project performItemClick(view, mSelectedPosition, mSelectedRowId); 18389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setPressed(false); 18399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (view != null) view.setPressed(false); 18409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 18419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1842dd753ae6115fdcb389b5abd8320245228b2e1d2dRomain Guy break; 18439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return super.onKeyUp(keyCode, event); 18459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 18489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void dispatchSetPressed(boolean pressed) { 18499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Don't dispatch setPressed to our children. We call setPressed on ourselves to 18509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // get the selector in the right state, but we don't want to press each child. 18519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 18549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Maps a point to a position in the list. 18559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 18569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x X in local coordinate 18579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y Y in local coordinate 18589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The position of the item which contains the specified point, or 18599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #INVALID_POSITION} if the point does not intersect an item. 18609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 18619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int pointToPosition(int x, int y) { 18629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Rect frame = mTouchFrame; 18639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (frame == null) { 18649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTouchFrame = new Rect(); 18659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project frame = mTouchFrame; 18669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getChildCount(); 18699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = count - 1; i >= 0; i--) { 18709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getChildAt(i); 18719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getVisibility() == View.VISIBLE) { 18729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.getHitRect(frame); 18739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (frame.contains(x, y)) { 18749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mFirstPosition + i; 18759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return INVALID_POSITION; 18799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 18839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Maps a point to a the rowId of the item which intersects that point. 18849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 18859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param x X in local coordinate 18869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y Y in local coordinate 18879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The rowId of the item which contains the specified point, or {@link #INVALID_ROW_ID} 18889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * if the point does not intersect an item. 18899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 18909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public long pointToRowId(int x, int y) { 18919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int position = pointToPosition(x, y); 18929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (position >= 0) { 18939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mAdapter.getItemId(position); 18949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return INVALID_ROW_ID; 18969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final class CheckForTap implements Runnable { 18999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void run() { 19009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mTouchMode == TOUCH_MODE_DOWN) { 19019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTouchMode = TOUCH_MODE_TAP; 19029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getChildAt(mMotionPosition - mFirstPosition); 19039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child != null && !child.hasFocusable()) { 19049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutMode = LAYOUT_NORMAL; 19059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mDataChanged) { 19079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project layoutChildren(); 19089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.setPressed(true); 19099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project positionSelector(child); 19109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setPressed(true); 19119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int longPressTimeout = ViewConfiguration.getLongPressTimeout(); 19139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean longClickable = isLongClickable(); 19149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mSelector != null) { 19169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Drawable d = mSelector.getCurrent(); 19179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (d != null && d instanceof TransitionDrawable) { 19189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (longClickable) { 19199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ((TransitionDrawable) d).startTransition(longPressTimeout); 19209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 19219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ((TransitionDrawable) d).resetTransition(); 19229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (longClickable) { 19279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mPendingCheckForLongPress == null) { 19289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPendingCheckForLongPress = new CheckForLongPress(); 19299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPendingCheckForLongPress.rememberWindowAttachCount(); 19319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project postDelayed(mPendingCheckForLongPress, longPressTimeout); 19329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 19339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTouchMode = TOUCH_MODE_DONE_WAITING; 19349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 19360a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy mTouchMode = TOUCH_MODE_DONE_WAITING; 19379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean startScrollIfNeeded(int deltaY) { 19449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check if we have moved far enough that it looks more like a 19459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // scroll than a tap 19469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int distance = Math.abs(deltaY); 1947eb6b1fa7b86e529ed7de1c77fbc77ccef65bf6a9Adam Powell final boolean overscroll = mScrollY != 0; 1948eb6b1fa7b86e529ed7de1c77fbc77ccef65bf6a9Adam Powell if (overscroll || distance > mTouchSlop) { 19499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project createScrollingCache(); 1950eb6b1fa7b86e529ed7de1c77fbc77ccef65bf6a9Adam Powell mTouchMode = overscroll ? TOUCH_MODE_OVERSCROLL : TOUCH_MODE_SCROLL; 19519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMotionCorrection = deltaY; 19529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final Handler handler = getHandler(); 19539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Handler should not be null unless the AbsListView is not attached to a 19549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // window, which would make it very hard to scroll it... but the monkeys 19559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // say it's possible. 19569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (handler != null) { 19579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handler.removeCallbacks(mPendingCheckForLongPress); 19589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setPressed(false); 19609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View motionView = getChildAt(mMotionPosition - mFirstPosition); 19619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (motionView != null) { 19629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project motionView.setPressed(false); 19639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reportScrollStateChange(OnScrollListener.SCROLL_STATE_TOUCH_SCROLL); 19659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Time to start stealing events! Once we've stolen them, don't let anyone 19669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // steal from us 19679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestDisallowInterceptTouchEvent(true); 19689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 19699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 19729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onTouchModeChanged(boolean isInTouchMode) { 19759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (isInTouchMode) { 19769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Get rid of the selection when we enter touch mode 19779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project hideSelector(); 19789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Layout, but only if we already have done so previously. 19799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // (Otherwise may clobber a LAYOUT_SYNC layout that was requested to restore 19809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // state.) 19819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (getHeight() > 0 && getChildCount() > 0) { 19829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // We do not lose focus initiating a touch (since AbsListView is focusable in 19839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // touch mode). Force an initial layout to get rid of the selection. 19849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project layoutChildren(); 19859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 198679ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } else { 198779ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell int touchMode = mTouchMode; 198879ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if (touchMode == TOUCH_MODE_OVERSCROLL || touchMode == TOUCH_MODE_OVERFLING) { 198979ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if (mFlingRunnable != null) { 199079ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mFlingRunnable.endFling(); 199151a6bee6719820d09595f474264fcb833eff470aAdam Powell } 199251a6bee6719820d09595f474264fcb833eff470aAdam Powell 199351a6bee6719820d09595f474264fcb833eff470aAdam Powell if (mScrollY != 0) { 199451a6bee6719820d09595f474264fcb833eff470aAdam Powell mScrollY = 0; 199551a6bee6719820d09595f474264fcb833eff470aAdam Powell invalidate(); 199679ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 199779ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 19989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 20019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 20029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean onTouchEvent(MotionEvent ev) { 2003dd753ae6115fdcb389b5abd8320245228b2e1d2dRomain Guy if (!isEnabled()) { 2004dd753ae6115fdcb389b5abd8320245228b2e1d2dRomain Guy // A disabled view that is clickable still consumes the touch 2005dd753ae6115fdcb389b5abd8320245228b2e1d2dRomain Guy // events, it just doesn't respond to them. 2006dd753ae6115fdcb389b5abd8320245228b2e1d2dRomain Guy return isClickable() || isLongClickable(); 2007dd753ae6115fdcb389b5abd8320245228b2e1d2dRomain Guy } 2008dd753ae6115fdcb389b5abd8320245228b2e1d2dRomain Guy 20099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mFastScroller != null) { 20109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean intercepted = mFastScroller.onTouchEvent(ev); 20119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (intercepted) { 20129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 20130a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy } 20149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 201582f3495b146b267f3786997752cef25310176349Romain Guy 20169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int action = ev.getAction(); 20179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 20189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View v; 20199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int deltaY; 20209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 20219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mVelocityTracker == null) { 20229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mVelocityTracker = VelocityTracker.obtain(); 20239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mVelocityTracker.addMovement(ev); 20259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 20264cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell switch (action & MotionEvent.ACTION_MASK) { 20279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case MotionEvent.ACTION_DOWN: { 202879ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell switch (mTouchMode) { 202979ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell case TOUCH_MODE_OVERFLING: { 203079ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mFlingRunnable.endFling(); 203179ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mTouchMode = TOUCH_MODE_OVERSCROLL; 20324cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell mLastY = (int) ev.getY(); 203379ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mMotionCorrection = 0; 20344cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell mActivePointerId = ev.getPointerId(0); 203579ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell break; 203679ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 203779ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell 203879ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell default: { 20394cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell mActivePointerId = ev.getPointerId(0); 20404cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell final int x = (int) ev.getX(); 20414cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell final int y = (int) ev.getY(); 204279ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell int motionPosition = pointToPosition(x, y); 204379ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if (!mDataChanged) { 204479ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if ((mTouchMode != TOUCH_MODE_FLING) && (motionPosition >= 0) 204579ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell && (getAdapter().isEnabled(motionPosition))) { 204679ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell // User clicked on an actual view (and was not stopping a fling). It might be a 204779ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell // click or a scroll. Assume it is a click until proven otherwise 204879ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mTouchMode = TOUCH_MODE_DOWN; 204979ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell // FIXME Debounce 205079ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if (mPendingCheckForTap == null) { 205179ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mPendingCheckForTap = new CheckForTap(); 205279ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 205379ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell postDelayed(mPendingCheckForTap, ViewConfiguration.getTapTimeout()); 205479ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } else { 205579ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if (ev.getEdgeFlags() != 0 && motionPosition < 0) { 205679ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell // If we couldn't find a view to click on, but the down event was touching 205779ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell // the edge, we will bail out and try again. This allows the edge correcting 205879ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell // code in ViewRoot to try to find a nearby view to select 205979ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell return false; 206079ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 20614cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell 20624cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell if (mTouchMode == TOUCH_MODE_FLING) { 20634cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell // Stopped a fling. It is a scroll. 20644cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell createScrollingCache(); 20654cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell mTouchMode = TOUCH_MODE_SCROLL; 20664cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell mMotionCorrection = 0; 20674cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell motionPosition = findMotionRow(y); 20684cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell reportScrollStateChange(OnScrollListener.SCROLL_STATE_TOUCH_SCROLL); 20694cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell } 20709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 207379ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if (motionPosition >= 0) { 207479ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell // Remember where the motion event started 207579ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell v = getChildAt(motionPosition - mFirstPosition); 207679ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mMotionViewOriginalTop = v.getTop(); 207779ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 2078090e0f08b9d8ea6328cd5210f1a27953fb0e4e67Romain Guy mMotionX = x; 2079090e0f08b9d8ea6328cd5210f1a27953fb0e4e67Romain Guy mMotionY = y; 2080090e0f08b9d8ea6328cd5210f1a27953fb0e4e67Romain Guy mMotionPosition = motionPosition; 208179ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mLastY = Integer.MIN_VALUE; 208279ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell break; 208379ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 20849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 20869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 20889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case MotionEvent.ACTION_MOVE: { 20894cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell final int pointerIndex = ev.findPointerIndex(mActivePointerId); 20904cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell final int y = (int) ev.getY(pointerIndex); 20919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project deltaY = y - mMotionY; 20929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (mTouchMode) { 20939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case TOUCH_MODE_DOWN: 20949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case TOUCH_MODE_TAP: 20959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case TOUCH_MODE_DONE_WAITING: 20969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check if we have moved far enough that it looks more like a 20979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // scroll than a tap 20989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project startScrollIfNeeded(deltaY); 20999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 21009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case TOUCH_MODE_SCROLL: 21019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (PROFILE_SCROLLING) { 21029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mScrollProfilingStarted) { 21039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Debug.startMethodTracing("AbsListViewScroll"); 21049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mScrollProfilingStarted = true; 21059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 21089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (y != mLastY) { 21099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project deltaY -= mMotionCorrection; 21109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int incrementalDeltaY = mLastY != Integer.MIN_VALUE ? y - mLastY : deltaY; 211179ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell 211279ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell int motionViewPrevTop = 0; 211379ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell View motionView = this.getChildAt(mMotionPosition - mFirstPosition); 211479ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if (motionView != null) { 211579ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell motionViewPrevTop = motionView.getTop(); 211679ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 2117458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 21186198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy // No need to do all this work if we're not going to move anyway 2119458034799861fef47e00d85d528b4dac5e00bd51Adam Powell boolean atEdge = false; 21206198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy if (incrementalDeltaY != 0) { 2121458034799861fef47e00d85d528b4dac5e00bd51Adam Powell atEdge = trackMotionScroll(deltaY, incrementalDeltaY); 21226198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy } 21239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 21249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check to see if we have bumped into the scroll limit 212579ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell motionView = this.getChildAt(mMotionPosition - mFirstPosition); 21269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (motionView != null) { 21279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check if the top of the motion view is where it is 21289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // supposed to be 212979ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell final int motionViewRealTop = motionView.getTop(); 2130458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (atEdge) { 213179ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell // Apply overscroll 213279ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell 21330b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell int overscroll = -incrementalDeltaY - 21340b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell (motionViewRealTop - motionViewPrevTop); 21350b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell overscrollBy(0, overscroll, 0, mScrollY, 0, 0, 21360b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell 0, getOverscrollMax()); 213779ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mTouchMode = TOUCH_MODE_OVERSCROLL; 213879ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell invalidate(); 213979ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 214079ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 214179ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mLastY = y; 214279ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 214379ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell break; 214479ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell 214579ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell case TOUCH_MODE_OVERSCROLL: 214679ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if (y != mLastY) { 214779ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell deltaY -= mMotionCorrection; 214879ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell int incrementalDeltaY = mLastY != Integer.MIN_VALUE ? y - mLastY : deltaY; 214979ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell 215079ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell final int oldScroll = mScrollY; 215179ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell final int newScroll = oldScroll - incrementalDeltaY; 215279ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell 215379ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if ((oldScroll >= 0 && newScroll <= 0) || 215479ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell (oldScroll <= 0 && newScroll >= 0)) { 215579ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell // Coming back to 'real' list scrolling 215679ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell incrementalDeltaY = -newScroll; 215779ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mScrollY = 0; 215879ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell 215979ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell // No need to do all this work if we're not going to move anyway 216079ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if (incrementalDeltaY != 0) { 216179ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell trackMotionScroll(incrementalDeltaY, incrementalDeltaY); 216279ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 216379ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell 216479ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell // Check to see if we are back in 216579ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell View motionView = this.getChildAt(mMotionPosition - mFirstPosition); 216679ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if (motionView != null) { 216779ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mTouchMode = TOUCH_MODE_SCROLL; 216879ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell 21699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // We did not scroll the full amount. Treat this essentially like the 21709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // start of a new touch scroll 21714cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell final int motionPosition = findClosestMotionRow(y); 21729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 21739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMotionCorrection = 0; 21749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project motionView = getChildAt(motionPosition - mFirstPosition); 21759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMotionViewOriginalTop = motionView.getTop(); 21769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMotionY = y; 21779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMotionPosition = motionPosition; 21789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 217979ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } else { 21800b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell overscrollBy(0, -incrementalDeltaY, 0, mScrollY, 0, 0, 21810b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell 0, getOverscrollMax()); 218279ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell invalidate(); 21839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLastY = y; 21859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 21879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 21899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 21909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 21929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case MotionEvent.ACTION_UP: { 21939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (mTouchMode) { 21949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case TOUCH_MODE_DOWN: 21959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case TOUCH_MODE_TAP: 21969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case TOUCH_MODE_DONE_WAITING: 21979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int motionPosition = mMotionPosition; 21989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getChildAt(motionPosition - mFirstPosition); 21999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child != null && !child.hasFocusable()) { 22009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mTouchMode != TOUCH_MODE_DOWN) { 22019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.setPressed(false); 22029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 22049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mPerformClick == null) { 22059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPerformClick = new PerformClick(); 22069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 22089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final AbsListView.PerformClick performClick = mPerformClick; 22099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project performClick.mChild = child; 22109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project performClick.mClickMotionPosition = motionPosition; 22119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project performClick.rememberWindowAttachCount(); 22129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 22139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mResurrectToPosition = motionPosition; 22149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 22159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mTouchMode == TOUCH_MODE_DOWN || mTouchMode == TOUCH_MODE_TAP) { 22169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final Handler handler = getHandler(); 22179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (handler != null) { 22189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handler.removeCallbacks(mTouchMode == TOUCH_MODE_DOWN ? 22199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPendingCheckForTap : mPendingCheckForLongPress); 22209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutMode = LAYOUT_NORMAL; 22229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTouchMode = TOUCH_MODE_TAP; 22239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mDataChanged) { 22249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelectedPositionInt(mMotionPosition); 22259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project layoutChildren(); 22269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.setPressed(true); 22279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project positionSelector(child); 22289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setPressed(true); 22299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mSelector != null) { 22309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Drawable d = mSelector.getCurrent(); 22319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (d != null && d instanceof TransitionDrawable) { 22326198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy ((TransitionDrawable) d).resetTransition(); 22339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project postDelayed(new Runnable() { 22369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void run() { 22379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.setPressed(false); 22389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setPressed(false); 22399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mDataChanged) { 22409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project post(performClick); 22419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTouchMode = TOUCH_MODE_REST; 22439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project }, ViewConfiguration.getPressedStateDuration()); 22459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 22479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 22489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mDataChanged) { 22499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project post(performClick); 22509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTouchMode = TOUCH_MODE_REST; 22549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 22559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case TOUCH_MODE_SCROLL: 22566198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy final int childCount = getChildCount(); 22576198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy if (childCount > 0) { 22586198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy if (mFirstPosition == 0 && getChildAt(0).getTop() >= mListPadding.top && 22596198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy mFirstPosition + childCount < mItemCount && 22606198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy getChildAt(childCount - 1).getBottom() <= 22616198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy getHeight() - mListPadding.bottom) { 22626198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy mTouchMode = TOUCH_MODE_REST; 22636198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy reportScrollStateChange(OnScrollListener.SCROLL_STATE_IDLE); 22646198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy } else { 22656198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy final VelocityTracker velocityTracker = mVelocityTracker; 22666198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy velocityTracker.computeCurrentVelocity(1000, mMaximumVelocity); 22674cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell final int initialVelocity = (int) velocityTracker.getYVelocity(mActivePointerId); 22686198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy 22696198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy if (Math.abs(initialVelocity) > mMinimumVelocity) { 22706198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy if (mFlingRunnable == null) { 22716198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy mFlingRunnable = new FlingRunnable(); 22726198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy } 22736198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy reportScrollStateChange(OnScrollListener.SCROLL_STATE_FLING); 227479ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell 22756198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy mFlingRunnable.start(-initialVelocity); 2276f3c7d4294dee6a271e417d81bdd74c87e57ce5b3Romain Guy } else { 2277f3c7d4294dee6a271e417d81bdd74c87e57ce5b3Romain Guy mTouchMode = TOUCH_MODE_REST; 2278f3c7d4294dee6a271e417d81bdd74c87e57ce5b3Romain Guy reportScrollStateChange(OnScrollListener.SCROLL_STATE_IDLE); 22796198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy } 22809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 22829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTouchMode = TOUCH_MODE_REST; 22839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reportScrollStateChange(OnScrollListener.SCROLL_STATE_IDLE); 22849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 228579ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell break; 228679ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell 228779ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell case TOUCH_MODE_OVERSCROLL: 228879ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if (mFlingRunnable == null) { 228979ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mFlingRunnable = new FlingRunnable(); 229079ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 229179ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell final VelocityTracker velocityTracker = mVelocityTracker; 229279ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell velocityTracker.computeCurrentVelocity(1000, mMaximumVelocity); 22934cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell final int initialVelocity = (int) velocityTracker.getYVelocity(mActivePointerId); 229479ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell 229579ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell reportScrollStateChange(OnScrollListener.SCROLL_STATE_FLING); 229679ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if (Math.abs(initialVelocity) > mMinimumVelocity) { 229779ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mFlingRunnable.startOverfling(-initialVelocity); 229879ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } else { 229979ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mFlingRunnable.startSpringback(); 230079ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 230179ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell 230279ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell break; 23039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 23059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setPressed(false); 23060a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy 23079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Need to redraw since we probably aren't drawing the selector anymore 23089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invalidate(); 23090a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy 23109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final Handler handler = getHandler(); 23119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (handler != null) { 23129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handler.removeCallbacks(mPendingCheckForLongPress); 23139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 23159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mVelocityTracker != null) { 23169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mVelocityTracker.recycle(); 23179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mVelocityTracker = null; 23189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23194cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell 23204cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell mActivePointerId = INVALID_POINTER; 23219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 23229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (PROFILE_SCROLLING) { 23239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mScrollProfilingStarted) { 23249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Debug.stopMethodTracing(); 23259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mScrollProfilingStarted = false; 23269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 23299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 23319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case MotionEvent.ACTION_CANCEL: { 233279ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell switch (mTouchMode) { 233379ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell case TOUCH_MODE_OVERSCROLL: 233479ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if (mFlingRunnable == null) { 233579ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mFlingRunnable = new FlingRunnable(); 233679ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 233779ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mFlingRunnable.startSpringback(); 233879ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell break; 233979ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell 234079ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell case TOUCH_MODE_OVERFLING: 234179ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell // Do nothing - let it play out. 234279ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell break; 234379ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell 234479ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell default: 234579ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mTouchMode = TOUCH_MODE_REST; 234679ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell setPressed(false); 234779ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell View motionView = this.getChildAt(mMotionPosition - mFirstPosition); 234879ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if (motionView != null) { 234979ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell motionView.setPressed(false); 235079ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 235179ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell clearScrollingCache(); 23529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 235379ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell final Handler handler = getHandler(); 235479ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if (handler != null) { 235579ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell handler.removeCallbacks(mPendingCheckForLongPress); 235679ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 23579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 235879ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if (mVelocityTracker != null) { 235979ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mVelocityTracker.recycle(); 236079ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mVelocityTracker = null; 236179ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 23629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23634cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell 23644cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell mActivePointerId = INVALID_POINTER; 23654cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell break; 23664cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell } 23674cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell 23684cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell case MotionEvent.ACTION_POINTER_UP: { 23694cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell onSecondaryPointerUp(ev); 23704cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell final int x = mMotionX; 23714cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell final int y = mMotionY; 23724cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell final int motionPosition = pointToPosition(x, y); 23734cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell if (motionPosition >= 0) { 23744cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell // Remember where the motion event started 23754cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell v = getChildAt(motionPosition - mFirstPosition); 23764cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell mMotionViewOriginalTop = v.getTop(); 23774cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell mMotionPosition = motionPosition; 23784cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell } 23794cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell mLastY = y; 23804cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell break; 23819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 23849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 23859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23860b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell 23870b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell @Override 23880b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell protected void onOverscrolled(int scrollX, int scrollY, 23890b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell boolean clampedX, boolean clampedY) { 23900b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell mScrollY = scrollY; 23910b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell if (clampedY) { 23920b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell // Velocity is broken by hitting the limit; don't start a fling off of this. 23930b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell if (mVelocityTracker != null) { 23940b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell mVelocityTracker.clear(); 23950b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell } 23960b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell } 2397ca8faae6b930abb2f1622c50ddee0b205b943adeAdam Powell awakenScrollBars(); 23980b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell } 23990b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell 240084222e04252720cf681032e865db526ce4a612a4Adam Powell int getOverscrollMax() { 24010b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell final int childCount = getChildCount(); 24020b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell if (childCount > 0) { 24030b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell return Math.min(mOverscrollMax, 24040b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell getChildAt(childCount - 1).getBottom() / OVERSCROLL_LIMIT_DIVISOR); 24050b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell } else { 24060b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell return mOverscrollMax; 24070b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell } 24080b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell } 24090a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy 24109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 24119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void draw(Canvas canvas) { 24129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.draw(canvas); 24139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mFastScroller != null) { 24147fd28847f11f718033737976d85969869e0dc66dAdam Powell final int scrollY = mScrollY; 24157fd28847f11f718033737976d85969869e0dc66dAdam Powell if (scrollY != 0) { 24167fd28847f11f718033737976d85969869e0dc66dAdam Powell // Pin the fast scroll thumb to the top/bottom during overscroll. 24177fd28847f11f718033737976d85969869e0dc66dAdam Powell int restoreCount = canvas.save(); 24187fd28847f11f718033737976d85969869e0dc66dAdam Powell canvas.translate(0, (float) scrollY); 24197fd28847f11f718033737976d85969869e0dc66dAdam Powell mFastScroller.draw(canvas); 24207fd28847f11f718033737976d85969869e0dc66dAdam Powell canvas.restoreToCount(restoreCount); 24217fd28847f11f718033737976d85969869e0dc66dAdam Powell } else { 24227fd28847f11f718033737976d85969869e0dc66dAdam Powell mFastScroller.draw(canvas); 24237fd28847f11f718033737976d85969869e0dc66dAdam Powell } 24249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 24279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 24289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean onInterceptTouchEvent(MotionEvent ev) { 24299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int action = ev.getAction(); 24309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View v; 24310a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy 24329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mFastScroller != null) { 24339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean intercepted = mFastScroller.onInterceptTouchEvent(ev); 24349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (intercepted) { 24359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 24369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24380a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy 24394cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell switch (action & MotionEvent.ACTION_MASK) { 24409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case MotionEvent.ACTION_DOWN: { 244179ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell int touchMode = mTouchMode; 244279ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if (touchMode == TOUCH_MODE_OVERFLING || touchMode == TOUCH_MODE_OVERSCROLL) { 244379ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell return true; 244479ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 244579ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell 24464cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell final int x = (int) ev.getX(); 24474cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell final int y = (int) ev.getY(); 24484cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell mActivePointerId = ev.getPointerId(0); 24494cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell 24509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int motionPosition = findMotionRow(y); 245179ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if (touchMode != TOUCH_MODE_FLING && motionPosition >= 0) { 24529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // User clicked on an actual view (and was not stopping a fling). 24539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remember where the motion event started 24549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project v = getChildAt(motionPosition - mFirstPosition); 24559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMotionViewOriginalTop = v.getTop(); 24569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMotionX = x; 24579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMotionY = y; 24589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mMotionPosition = motionPosition; 24599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTouchMode = TOUCH_MODE_DOWN; 24609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project clearScrollingCache(); 24619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLastY = Integer.MIN_VALUE; 246379ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if (touchMode == TOUCH_MODE_FLING) { 24644b4f40f84e72579417604143e5f42115769649b8Romain Guy return true; 24654b4f40f84e72579417604143e5f42115769649b8Romain Guy } 24669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 24679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 24699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case MotionEvent.ACTION_MOVE: { 24709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (mTouchMode) { 24719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case TOUCH_MODE_DOWN: 24724cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell final int pointerIndex = ev.findPointerIndex(mActivePointerId); 24734cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell final int y = (int) ev.getY(pointerIndex); 24749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (startScrollIfNeeded(y - mMotionY)) { 24759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 24769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 24789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 24809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 24829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case MotionEvent.ACTION_UP: { 24839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTouchMode = TOUCH_MODE_REST; 24844cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell mActivePointerId = INVALID_POINTER; 24859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reportScrollStateChange(OnScrollListener.SCROLL_STATE_IDLE); 24869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 24879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24884cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell 24894cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell case MotionEvent.ACTION_POINTER_UP: { 24904cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell onSecondaryPointerUp(ev); 24914cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell break; 24924cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell } 24939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 24959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 24969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24974cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell 24984cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell private void onSecondaryPointerUp(MotionEvent ev) { 24994cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell final int pointerIndex = (ev.getAction() & MotionEvent.ACTION_POINTER_INDEX_MASK) >> 25004cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell MotionEvent.ACTION_POINTER_INDEX_SHIFT; 25014cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell final int pointerId = ev.getPointerId(pointerIndex); 25024cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell if (pointerId == mActivePointerId) { 25034cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell // This was our active pointer going up. Choose a new 25044cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell // active pointer and adjust accordingly. 25054cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell // TODO: Make this decision more intelligent. 25064cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell final int newPointerIndex = pointerIndex == 0 ? 1 : 0; 25074cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell mMotionX = (int) ev.getX(newPointerIndex); 25084cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell mMotionY = (int) ev.getY(newPointerIndex); 25094cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell mActivePointerId = ev.getPointerId(newPointerIndex); 25104cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell if (mVelocityTracker != null) { 25114cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell mVelocityTracker.clear(); 25124cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell } 25134cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell } 25144cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell } 25159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 25179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 25189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 25199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 25209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void addTouchables(ArrayList<View> views) { 25219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getChildCount(); 25229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int firstPosition = mFirstPosition; 25239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final ListAdapter adapter = mAdapter; 25249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (adapter == null) { 25269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 25279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; i++) { 25309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getChildAt(i); 25319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (adapter.isEnabled(firstPosition + i)) { 25329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project views.add(child); 25339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.addTouchables(views); 25359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 25399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Fires an "on scroll state changed" event to the registered 25409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.widget.AbsListView.OnScrollListener}, if any. The state change 25419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * is fired only if the specified state is different from the previously known state. 25429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 25439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param newState The new scroll state. 25449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 25459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void reportScrollStateChange(int newState) { 25469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (newState != mLastScrollState) { 25479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnScrollListener != null) { 25489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnScrollListener.onScrollStateChanged(this, newState); 25499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLastScrollState = newState; 25509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 25559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Responsible for fling behavior. Use {@link #start(int)} to 25569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * initiate a fling. Each frame of the fling is handled in {@link #run()}. 25579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * A FlingRunnable will keep re-posting itself until the fling is done. 25589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 25599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 25609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private class FlingRunnable implements Runnable { 25619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 25629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Tracks the decay of a fling scroll 25639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 256479ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell private OverScroller mScroller; 25659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 25679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Y value reported by mScroller on the previous fling 25689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 25699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mLastFlingY; 25709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 257179ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell FlingRunnable() { 257279ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mScroller = new OverScroller(getContext()); 25739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 257579ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell void start(int initialVelocity) { 25769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int initialY = initialVelocity < 0 ? Integer.MAX_VALUE : 0; 25779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLastFlingY = initialY; 25789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mScroller.fling(0, initialY, 0, initialVelocity, 25799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 0, Integer.MAX_VALUE, 0, Integer.MAX_VALUE); 25809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTouchMode = TOUCH_MODE_FLING; 25819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project post(this); 25829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (PROFILE_FLINGING) { 25849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mFlingProfilingStarted) { 25859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Debug.startMethodTracing("AbsListViewFling"); 25869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFlingProfilingStarted = true; 25879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2590458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 259179ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell void startSpringback() { 259279ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if (mScroller.springback(0, mScrollY, 0, 0, 0, 0)) { 259379ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mTouchMode = TOUCH_MODE_OVERFLING; 259479ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell invalidate(); 259579ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell post(this); 259679ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 259779ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 2598458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 259979ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell void startOverfling(int initialVelocity) { 260079ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mScroller.fling(0, mScrollY, 0, initialVelocity, 0, 0, 0, 0, 0, getHeight()); 260179ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mTouchMode = TOUCH_MODE_OVERFLING; 260279ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell invalidate(); 260379ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell post(this); 260479ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 2605458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2606458034799861fef47e00d85d528b4dac5e00bd51Adam Powell void startScroll(int distance, int duration) { 2607458034799861fef47e00d85d528b4dac5e00bd51Adam Powell int initialY = distance < 0 ? Integer.MAX_VALUE : 0; 2608458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mLastFlingY = initialY; 2609458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mScroller.startScroll(0, initialY, 0, distance, duration); 2610458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mTouchMode = TOUCH_MODE_FLING; 2611458034799861fef47e00d85d528b4dac5e00bd51Adam Powell post(this); 2612458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2613458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 26149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void endFling() { 26159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTouchMode = TOUCH_MODE_REST; 2616458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 26179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reportScrollStateChange(OnScrollListener.SCROLL_STATE_IDLE); 26189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project clearScrollingCache(); 2619458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 262079ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell removeCallbacks(this); 2621458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2622458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (mPositionScroller != null) { 2623458034799861fef47e00d85d528b4dac5e00bd51Adam Powell removeCallbacks(mPositionScroller); 2624458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 26259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 26269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 26279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void run() { 262879ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell switch (mTouchMode) { 262979ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell default: 26309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 263179ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell 263279ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell case TOUCH_MODE_FLING: { 263379ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if (mItemCount == 0 || getChildCount() == 0) { 263479ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell endFling(); 263579ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell return; 263679ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 26379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 263879ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell final OverScroller scroller = mScroller; 263979ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell boolean more = scroller.computeScrollOffset(); 264079ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell final int y = scroller.getCurrY(); 26419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 264279ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell // Flip sign to convert finger direction to list items direction 264379ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell // (e.g. finger moving down means list is moving towards the top) 264479ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell int delta = mLastFlingY - y; 26459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 264679ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell // Pretend that each frame of a fling scroll is a touch scroll 264779ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if (delta > 0) { 264879ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell // List is moving towards the top. Use first view as mMotionPosition 264979ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mMotionPosition = mFirstPosition; 265079ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell final View firstView = getChildAt(0); 265179ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mMotionViewOriginalTop = firstView.getTop(); 26529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 265379ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell // Don't fling more than 1 screen 265479ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell delta = Math.min(getHeight() - mPaddingBottom - mPaddingTop - 1, delta); 265579ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } else { 265679ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell // List is moving towards the bottom. Use last view as mMotionPosition 265779ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell int offsetToLast = getChildCount() - 1; 265879ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mMotionPosition = mFirstPosition + offsetToLast; 26599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 266079ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell final View lastView = getChildAt(offsetToLast); 266179ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mMotionViewOriginalTop = lastView.getTop(); 26629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 266379ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell // Don't fling more than 1 screen 266479ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell delta = Math.max(-(getHeight() - mPaddingBottom - mPaddingTop - 1), delta); 266579ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 26669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 266779ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell // Check to see if we have bumped into the scroll limit 266879ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell View motionView = getChildAt(mMotionPosition - mFirstPosition); 26690b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell int oldTop = 0; 267079ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if (motionView != null) { 26710b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell oldTop = motionView.getTop(); 26720b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell } 26730b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell if (trackMotionScroll(delta, delta)) { 26740b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell if (motionView != null) { 26750b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell // Tweak the scroll for how far we overshot 2676c9fbaabc1bbf847b6e8bf2595068cbd990f3da55Adam Powell int overshoot = -(delta - (motionView.getTop() - oldTop)); 2677c9fbaabc1bbf847b6e8bf2595068cbd990f3da55Adam Powell overscrollBy(0, overshoot, 0, mScrollY, 0, 0, 0, getOverscrollMax()); 26780b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell } 26790b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell float vel = scroller.getCurrVelocity(); 26800b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell if (delta > 0) { 26810b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell vel = -vel; 268279ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 26830b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell startOverfling(Math.round(vel)); 26840b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell break; 26859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 26869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 268779ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if (more) { 268879ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell invalidate(); 268979ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mLastFlingY = y; 269079ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell post(this); 269179ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } else { 269279ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell endFling(); 269379ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell 269479ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if (PROFILE_FLINGING) { 269579ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if (mFlingProfilingStarted) { 269679ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell Debug.stopMethodTracing(); 269779ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell mFlingProfilingStarted = false; 269879ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 26999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 270179ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell break; 27029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 270379ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell 270479ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell case TOUCH_MODE_OVERFLING: { 270579ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell final OverScroller scroller = mScroller; 270679ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell if (scroller.computeScrollOffset()) { 27070b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell final int scrollY = mScrollY; 27080b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell final int deltaY = scroller.getCurrY() - scrollY; 27090b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell if (overscrollBy(0, deltaY, 0, scrollY, 0, 0, 0, getOverscrollMax())) { 27100b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell startSpringback(); 27110b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell } else { 27120b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell invalidate(); 27130b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell post(this); 27140b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell } 271579ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } else { 271679ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell endFling(); 271779ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 271879ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell break; 271979ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 272079ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell } 272179ac3395b58de5b99f0bb43d8950f6b95348326dAdam Powell 27229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2724458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2725458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2726458034799861fef47e00d85d528b4dac5e00bd51Adam Powell class PositionScroller implements Runnable { 2727458034799861fef47e00d85d528b4dac5e00bd51Adam Powell private static final int SCROLL_DURATION = 400; 2728458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2729458034799861fef47e00d85d528b4dac5e00bd51Adam Powell private static final int MOVE_DOWN_POS = 1; 2730458034799861fef47e00d85d528b4dac5e00bd51Adam Powell private static final int MOVE_UP_POS = 2; 2731458034799861fef47e00d85d528b4dac5e00bd51Adam Powell private static final int MOVE_DOWN_BOUND = 3; 2732458034799861fef47e00d85d528b4dac5e00bd51Adam Powell private static final int MOVE_UP_BOUND = 4; 2733458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2734458034799861fef47e00d85d528b4dac5e00bd51Adam Powell private int mMode; 2735458034799861fef47e00d85d528b4dac5e00bd51Adam Powell private int mTargetPos; 2736458034799861fef47e00d85d528b4dac5e00bd51Adam Powell private int mBoundPos; 2737458034799861fef47e00d85d528b4dac5e00bd51Adam Powell private int mLastSeenPos; 2738458034799861fef47e00d85d528b4dac5e00bd51Adam Powell private int mScrollDuration; 2739458034799861fef47e00d85d528b4dac5e00bd51Adam Powell private int mExtraScroll; 2740458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2741458034799861fef47e00d85d528b4dac5e00bd51Adam Powell PositionScroller() { 2742458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mExtraScroll = ViewConfiguration.get(mContext).getScaledFadingEdgeLength(); 2743458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2744458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2745458034799861fef47e00d85d528b4dac5e00bd51Adam Powell void start(int position) { 2746458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int firstPos = mFirstPosition; 2747458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int lastPos = firstPos + getChildCount() - 1; 2748458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2749458034799861fef47e00d85d528b4dac5e00bd51Adam Powell int viewTravelCount = 0; 2750458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (position <= firstPos) { 2751458034799861fef47e00d85d528b4dac5e00bd51Adam Powell viewTravelCount = firstPos - position + 1; 2752458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mMode = MOVE_UP_POS; 2753458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } else if (position >= lastPos) { 2754458034799861fef47e00d85d528b4dac5e00bd51Adam Powell viewTravelCount = position - lastPos + 1; 2755458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mMode = MOVE_DOWN_POS; 2756458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } else { 2757458034799861fef47e00d85d528b4dac5e00bd51Adam Powell // Already on screen, nothing to do 2758458034799861fef47e00d85d528b4dac5e00bd51Adam Powell return; 2759458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2760458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2761458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (viewTravelCount > 0) { 2762458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mScrollDuration = SCROLL_DURATION / viewTravelCount; 2763458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } else { 2764458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mScrollDuration = SCROLL_DURATION; 2765458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2766458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mTargetPos = position; 2767458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mBoundPos = INVALID_POSITION; 2768458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mLastSeenPos = INVALID_POSITION; 2769458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2770458034799861fef47e00d85d528b4dac5e00bd51Adam Powell post(this); 2771458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2772458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2773458034799861fef47e00d85d528b4dac5e00bd51Adam Powell void start(int position, int boundPosition) { 2774458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (boundPosition == INVALID_POSITION) { 2775458034799861fef47e00d85d528b4dac5e00bd51Adam Powell start(position); 2776458034799861fef47e00d85d528b4dac5e00bd51Adam Powell return; 2777458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2778458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2779458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int firstPos = mFirstPosition; 2780458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int lastPos = firstPos + getChildCount() - 1; 2781458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2782458034799861fef47e00d85d528b4dac5e00bd51Adam Powell int viewTravelCount = 0; 2783fee20911e3ec97af64e4ac2c519d75b5f75e2a27Adam Powell if (position <= firstPos) { 2784458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int boundPosFromLast = lastPos - boundPosition; 2785458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (boundPosFromLast < 1) { 2786458034799861fef47e00d85d528b4dac5e00bd51Adam Powell // Moving would shift our bound position off the screen. Abort. 2787458034799861fef47e00d85d528b4dac5e00bd51Adam Powell return; 2788458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2789458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2790458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int posTravel = firstPos - position + 1; 2791458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int boundTravel = boundPosFromLast - 1; 2792458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (boundTravel < posTravel) { 2793458034799861fef47e00d85d528b4dac5e00bd51Adam Powell viewTravelCount = boundTravel; 2794458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mMode = MOVE_UP_BOUND; 2795458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } else { 2796458034799861fef47e00d85d528b4dac5e00bd51Adam Powell viewTravelCount = posTravel; 2797458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mMode = MOVE_UP_POS; 2798458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2799fee20911e3ec97af64e4ac2c519d75b5f75e2a27Adam Powell } else if (position >= lastPos) { 2800458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int boundPosFromFirst = boundPosition - firstPos; 2801458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (boundPosFromFirst < 1) { 2802458034799861fef47e00d85d528b4dac5e00bd51Adam Powell // Moving would shift our bound position off the screen. Abort. 2803458034799861fef47e00d85d528b4dac5e00bd51Adam Powell return; 2804458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2805458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2806458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int posTravel = position - lastPos + 1; 2807458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int boundTravel = boundPosFromFirst - 1; 2808458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (boundTravel < posTravel) { 2809458034799861fef47e00d85d528b4dac5e00bd51Adam Powell viewTravelCount = boundTravel; 2810458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mMode = MOVE_DOWN_BOUND; 2811458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } else { 2812458034799861fef47e00d85d528b4dac5e00bd51Adam Powell viewTravelCount = posTravel; 2813458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mMode = MOVE_DOWN_POS; 2814458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2815458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } else { 2816458034799861fef47e00d85d528b4dac5e00bd51Adam Powell // Already on screen, nothing to do 2817458034799861fef47e00d85d528b4dac5e00bd51Adam Powell return; 2818458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2819458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2820458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (viewTravelCount > 0) { 2821458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mScrollDuration = SCROLL_DURATION / viewTravelCount; 2822458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } else { 2823458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mScrollDuration = SCROLL_DURATION; 2824458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2825458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mTargetPos = position; 2826458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mBoundPos = boundPosition; 2827458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mLastSeenPos = INVALID_POSITION; 2828458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2829458034799861fef47e00d85d528b4dac5e00bd51Adam Powell post(this); 2830458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2831458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2832458034799861fef47e00d85d528b4dac5e00bd51Adam Powell void stop() { 2833458034799861fef47e00d85d528b4dac5e00bd51Adam Powell removeCallbacks(this); 2834458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2835458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2836458034799861fef47e00d85d528b4dac5e00bd51Adam Powell public void run() { 2837458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int listHeight = getHeight(); 2838458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int firstPos = mFirstPosition; 2839458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2840458034799861fef47e00d85d528b4dac5e00bd51Adam Powell switch (mMode) { 2841458034799861fef47e00d85d528b4dac5e00bd51Adam Powell case MOVE_DOWN_POS: { 2842458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int lastViewIndex = getChildCount() - 1; 2843458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int lastPos = firstPos + lastViewIndex; 28440b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell 28450b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell if (lastViewIndex < 0) { 28460b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell return; 28470b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell } 2848458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2849458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (lastPos == mLastSeenPos) { 2850458034799861fef47e00d85d528b4dac5e00bd51Adam Powell // No new views, let things keep going. 2851458034799861fef47e00d85d528b4dac5e00bd51Adam Powell post(this); 2852458034799861fef47e00d85d528b4dac5e00bd51Adam Powell return; 2853458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2854458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2855458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final View lastView = getChildAt(lastViewIndex); 2856458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int lastViewHeight = lastView.getHeight(); 2857458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int lastViewTop = lastView.getTop(); 2858458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int lastViewPixelsShowing = listHeight - lastViewTop; 2859029cfbd6f28e1664e8ef77ea928560f20ac3fb8eAdam Powell final int extraScroll = lastPos < mItemCount - 1 ? mExtraScroll : mListPadding.bottom; 2860458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2861029cfbd6f28e1664e8ef77ea928560f20ac3fb8eAdam Powell smoothScrollBy(lastViewHeight - lastViewPixelsShowing + extraScroll, 2862458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mScrollDuration); 2863458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2864458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mLastSeenPos = lastPos; 2865458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (lastPos != mTargetPos) { 2866458034799861fef47e00d85d528b4dac5e00bd51Adam Powell post(this); 2867458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2868458034799861fef47e00d85d528b4dac5e00bd51Adam Powell break; 2869458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2870458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2871458034799861fef47e00d85d528b4dac5e00bd51Adam Powell case MOVE_DOWN_BOUND: { 2872458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int nextViewIndex = 1; 2873029cfbd6f28e1664e8ef77ea928560f20ac3fb8eAdam Powell final int childCount = getChildCount(); 2874029cfbd6f28e1664e8ef77ea928560f20ac3fb8eAdam Powell 2875029cfbd6f28e1664e8ef77ea928560f20ac3fb8eAdam Powell if (firstPos == mBoundPos || childCount <= nextViewIndex 2876029cfbd6f28e1664e8ef77ea928560f20ac3fb8eAdam Powell || firstPos + childCount >= mItemCount) { 2877458034799861fef47e00d85d528b4dac5e00bd51Adam Powell return; 2878458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2879458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int nextPos = firstPos + nextViewIndex; 2880458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2881458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (nextPos == mLastSeenPos) { 2882458034799861fef47e00d85d528b4dac5e00bd51Adam Powell // No new views, let things keep going. 2883458034799861fef47e00d85d528b4dac5e00bd51Adam Powell post(this); 2884458034799861fef47e00d85d528b4dac5e00bd51Adam Powell return; 2885458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2886458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2887458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final View nextView = getChildAt(nextViewIndex); 2888458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int nextViewHeight = nextView.getHeight(); 2889458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int nextViewTop = nextView.getTop(); 2890458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int extraScroll = mExtraScroll; 2891458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (nextPos != mBoundPos) { 2892458034799861fef47e00d85d528b4dac5e00bd51Adam Powell smoothScrollBy(Math.max(0, nextViewHeight + nextViewTop - extraScroll), 2893458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mScrollDuration); 2894458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2895458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mLastSeenPos = nextPos; 2896458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2897458034799861fef47e00d85d528b4dac5e00bd51Adam Powell post(this); 2898458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } else { 2899458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (nextViewTop > extraScroll) { 2900458034799861fef47e00d85d528b4dac5e00bd51Adam Powell smoothScrollBy(nextViewTop - extraScroll, mScrollDuration); 2901458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2902458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2903458034799861fef47e00d85d528b4dac5e00bd51Adam Powell break; 2904458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2905458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2906458034799861fef47e00d85d528b4dac5e00bd51Adam Powell case MOVE_UP_POS: { 2907458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (firstPos == mLastSeenPos) { 2908458034799861fef47e00d85d528b4dac5e00bd51Adam Powell // No new views, let things keep going. 2909458034799861fef47e00d85d528b4dac5e00bd51Adam Powell post(this); 2910458034799861fef47e00d85d528b4dac5e00bd51Adam Powell return; 2911458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2912458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2913458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final View firstView = getChildAt(0); 29140b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell if (firstView == null) { 29150b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell return; 29160b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell } 2917458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int firstViewTop = firstView.getTop(); 2918029cfbd6f28e1664e8ef77ea928560f20ac3fb8eAdam Powell final int extraScroll = firstPos > 0 ? mExtraScroll : mListPadding.top; 2919458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2920029cfbd6f28e1664e8ef77ea928560f20ac3fb8eAdam Powell smoothScrollBy(firstViewTop - extraScroll, mScrollDuration); 2921458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2922458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mLastSeenPos = firstPos; 2923458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2924458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (firstPos != mTargetPos) { 2925458034799861fef47e00d85d528b4dac5e00bd51Adam Powell post(this); 2926458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2927458034799861fef47e00d85d528b4dac5e00bd51Adam Powell break; 2928458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2929458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2930458034799861fef47e00d85d528b4dac5e00bd51Adam Powell case MOVE_UP_BOUND: { 2931458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int lastViewIndex = getChildCount() - 2; 2932458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (lastViewIndex < 0) { 2933458034799861fef47e00d85d528b4dac5e00bd51Adam Powell return; 2934458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2935458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int lastPos = firstPos + lastViewIndex; 2936458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2937458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (lastPos == mLastSeenPos) { 2938458034799861fef47e00d85d528b4dac5e00bd51Adam Powell // No new views, let things keep going. 2939458034799861fef47e00d85d528b4dac5e00bd51Adam Powell post(this); 2940458034799861fef47e00d85d528b4dac5e00bd51Adam Powell return; 2941458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2942458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2943458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final View lastView = getChildAt(lastViewIndex); 2944458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int lastViewHeight = lastView.getHeight(); 2945458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int lastViewTop = lastView.getTop(); 2946458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int lastViewPixelsShowing = listHeight - lastViewTop; 2947458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mLastSeenPos = lastPos; 2948458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (lastPos != mBoundPos) { 2949458034799861fef47e00d85d528b4dac5e00bd51Adam Powell smoothScrollBy(-(lastViewPixelsShowing - mExtraScroll), mScrollDuration); 2950458034799861fef47e00d85d528b4dac5e00bd51Adam Powell post(this); 2951458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } else { 2952458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int bottom = listHeight - mExtraScroll; 2953458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int lastViewBottom = lastViewTop + lastViewHeight; 2954458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (bottom > lastViewBottom) { 2955458034799861fef47e00d85d528b4dac5e00bd51Adam Powell smoothScrollBy(-(bottom - lastViewBottom), mScrollDuration); 2956458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2957458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2958458034799861fef47e00d85d528b4dac5e00bd51Adam Powell break; 2959458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2960458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2961458034799861fef47e00d85d528b4dac5e00bd51Adam Powell default: 2962458034799861fef47e00d85d528b4dac5e00bd51Adam Powell break; 2963458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2964458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2965458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2966458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2967458034799861fef47e00d85d528b4dac5e00bd51Adam Powell /** 2968458034799861fef47e00d85d528b4dac5e00bd51Adam Powell * Smoothly scroll to the specified adapter position. The view will 2969458034799861fef47e00d85d528b4dac5e00bd51Adam Powell * scroll such that the indicated position is displayed. 2970458034799861fef47e00d85d528b4dac5e00bd51Adam Powell * @param position Scroll to this adapter position. 2971458034799861fef47e00d85d528b4dac5e00bd51Adam Powell */ 2972458034799861fef47e00d85d528b4dac5e00bd51Adam Powell public void smoothScrollToPosition(int position) { 2973458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (mPositionScroller == null) { 2974458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mPositionScroller = new PositionScroller(); 2975458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2976458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mPositionScroller.start(position); 2977458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2978458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2979458034799861fef47e00d85d528b4dac5e00bd51Adam Powell /** 2980458034799861fef47e00d85d528b4dac5e00bd51Adam Powell * Smoothly scroll to the specified adapter position. The view will 2981458034799861fef47e00d85d528b4dac5e00bd51Adam Powell * scroll such that the indicated position is displayed, but it will 2982458034799861fef47e00d85d528b4dac5e00bd51Adam Powell * stop early if scrolling further would scroll boundPosition out of 2983458034799861fef47e00d85d528b4dac5e00bd51Adam Powell * view. 2984458034799861fef47e00d85d528b4dac5e00bd51Adam Powell * @param position Scroll to this adapter position. 2985458034799861fef47e00d85d528b4dac5e00bd51Adam Powell * @param boundPosition Do not scroll if it would move this adapter 2986458034799861fef47e00d85d528b4dac5e00bd51Adam Powell * position out of view. 2987458034799861fef47e00d85d528b4dac5e00bd51Adam Powell */ 2988458034799861fef47e00d85d528b4dac5e00bd51Adam Powell public void smoothScrollToPosition(int position, int boundPosition) { 2989458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (mPositionScroller == null) { 2990458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mPositionScroller = new PositionScroller(); 2991458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2992458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mPositionScroller.start(position, boundPosition); 2993458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 2994458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 2995458034799861fef47e00d85d528b4dac5e00bd51Adam Powell /** 2996458034799861fef47e00d85d528b4dac5e00bd51Adam Powell * Smoothly scroll by distance pixels over duration milliseconds. 2997458034799861fef47e00d85d528b4dac5e00bd51Adam Powell * @param distance Distance to scroll in pixels. 2998458034799861fef47e00d85d528b4dac5e00bd51Adam Powell * @param duration Duration of the scroll animation in milliseconds. 2999458034799861fef47e00d85d528b4dac5e00bd51Adam Powell */ 3000458034799861fef47e00d85d528b4dac5e00bd51Adam Powell public void smoothScrollBy(int distance, int duration) { 3001458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (mFlingRunnable == null) { 3002458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mFlingRunnable = new FlingRunnable(); 3003458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } else { 3004458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mFlingRunnable.endFling(); 3005458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 3006458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mFlingRunnable.startScroll(distance, duration); 3007458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 30089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 30099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void createScrollingCache() { 30109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mScrollingCacheEnabled && !mCachingStarted) { 30119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setChildrenDrawnWithCacheEnabled(true); 30129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setChildrenDrawingCacheEnabled(true); 30139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mCachingStarted = true; 30149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 30179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void clearScrollingCache() { 30186dfed24158b8fc9150abee23992db621cd82aa43Romain Guy if (mClearScrollingCache == null) { 30196dfed24158b8fc9150abee23992db621cd82aa43Romain Guy mClearScrollingCache = new Runnable() { 30206dfed24158b8fc9150abee23992db621cd82aa43Romain Guy public void run() { 30216dfed24158b8fc9150abee23992db621cd82aa43Romain Guy if (mCachingStarted) { 30226dfed24158b8fc9150abee23992db621cd82aa43Romain Guy mCachingStarted = false; 30236dfed24158b8fc9150abee23992db621cd82aa43Romain Guy setChildrenDrawnWithCacheEnabled(false); 30246dfed24158b8fc9150abee23992db621cd82aa43Romain Guy if ((mPersistentDrawingCache & PERSISTENT_SCROLLING_CACHE) == 0) { 30256dfed24158b8fc9150abee23992db621cd82aa43Romain Guy setChildrenDrawingCacheEnabled(false); 30266dfed24158b8fc9150abee23992db621cd82aa43Romain Guy } 30276dfed24158b8fc9150abee23992db621cd82aa43Romain Guy if (!isAlwaysDrawnWithCacheEnabled()) { 30286dfed24158b8fc9150abee23992db621cd82aa43Romain Guy invalidate(); 30296dfed24158b8fc9150abee23992db621cd82aa43Romain Guy } 30306dfed24158b8fc9150abee23992db621cd82aa43Romain Guy } 30316dfed24158b8fc9150abee23992db621cd82aa43Romain Guy } 30326dfed24158b8fc9150abee23992db621cd82aa43Romain Guy }; 30339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30346dfed24158b8fc9150abee23992db621cd82aa43Romain Guy post(mClearScrollingCache); 30359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 30379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 30389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Track a motion scroll 30399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 30409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param deltaY Amount to offset mMotionView. This is the accumulated delta since the motion 30419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * began. Positive numbers mean the user's finger is moving down the screen. 30429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param incrementalDeltaY Change in deltaY from the previous event. 3043458034799861fef47e00d85d528b4dac5e00bd51Adam Powell * @return true if we're already at the beginning/end of the list and have nothing to do. 30449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3045458034799861fef47e00d85d528b4dac5e00bd51Adam Powell boolean trackMotionScroll(int deltaY, int incrementalDeltaY) { 30469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childCount = getChildCount(); 30479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childCount == 0) { 3048458034799861fef47e00d85d528b4dac5e00bd51Adam Powell return true; 30499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 30519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int firstTop = getChildAt(0).getTop(); 30529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int lastBottom = getChildAt(childCount - 1).getBottom(); 30539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 30549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final Rect listPadding = mListPadding; 30559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 30569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // FIXME account for grid vertical spacing too? 30579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int spaceAbove = listPadding.top - firstTop; 30589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int end = getHeight() - listPadding.bottom; 30599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int spaceBelow = lastBottom - end; 30609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 30619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int height = getHeight() - mPaddingBottom - mPaddingTop; 30629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (deltaY < 0) { 30639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project deltaY = Math.max(-(height - 1), deltaY); 30649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 30659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project deltaY = Math.min(height - 1, deltaY); 30669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 30689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (incrementalDeltaY < 0) { 30699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project incrementalDeltaY = Math.max(-(height - 1), incrementalDeltaY); 30709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 30719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project incrementalDeltaY = Math.min(height - 1, incrementalDeltaY); 30729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3074458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int firstPosition = mFirstPosition; 30759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3076458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (firstPosition == 0 && firstTop >= listPadding.top && deltaY > 0) { 3077458034799861fef47e00d85d528b4dac5e00bd51Adam Powell // Don't need to move views down if the top of the first position 3078458034799861fef47e00d85d528b4dac5e00bd51Adam Powell // is already visible 3079458034799861fef47e00d85d528b4dac5e00bd51Adam Powell return true; 3080458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 30819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3082458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (firstPosition + childCount == mItemCount && lastBottom <= end && deltaY < 0) { 3083458034799861fef47e00d85d528b4dac5e00bd51Adam Powell // Don't need to move views up if the bottom of the last position 3084458034799861fef47e00d85d528b4dac5e00bd51Adam Powell // is already visible 3085458034799861fef47e00d85d528b4dac5e00bd51Adam Powell return true; 3086458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 30879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3088458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final boolean down = incrementalDeltaY < 0; 30899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3090029cfbd6f28e1664e8ef77ea928560f20ac3fb8eAdam Powell final boolean inTouchMode = isInTouchMode(); 3091029cfbd6f28e1664e8ef77ea928560f20ac3fb8eAdam Powell if (inTouchMode) { 3092029cfbd6f28e1664e8ef77ea928560f20ac3fb8eAdam Powell hideSelector(); 3093029cfbd6f28e1664e8ef77ea928560f20ac3fb8eAdam Powell } 30949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3095458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int headerViewsCount = getHeaderViewsCount(); 3096458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int footerViewsStart = mItemCount - getFooterViewsCount(); 30979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3098458034799861fef47e00d85d528b4dac5e00bd51Adam Powell int start = 0; 3099458034799861fef47e00d85d528b4dac5e00bd51Adam Powell int count = 0; 31009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3101458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (down) { 3102458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int top = listPadding.top - incrementalDeltaY; 3103458034799861fef47e00d85d528b4dac5e00bd51Adam Powell for (int i = 0; i < childCount; i++) { 3104458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final View child = getChildAt(i); 3105458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (child.getBottom() >= top) { 3106458034799861fef47e00d85d528b4dac5e00bd51Adam Powell break; 3107458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } else { 3108458034799861fef47e00d85d528b4dac5e00bd51Adam Powell count++; 3109458034799861fef47e00d85d528b4dac5e00bd51Adam Powell int position = firstPosition + i; 3110458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (position >= headerViewsCount && position < footerViewsStart) { 3111458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mRecycler.addScrapView(child); 3112458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 3113458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (ViewDebug.TRACE_RECYCLER) { 3114458034799861fef47e00d85d528b4dac5e00bd51Adam Powell ViewDebug.trace(child, 3115458034799861fef47e00d85d528b4dac5e00bd51Adam Powell ViewDebug.RecyclerTraceType.MOVE_TO_SCRAP_HEAP, 3116458034799861fef47e00d85d528b4dac5e00bd51Adam Powell firstPosition + i, -1); 31179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 31189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 31199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3120458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 3121458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } else { 3122458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int bottom = getHeight() - listPadding.bottom - incrementalDeltaY; 3123458034799861fef47e00d85d528b4dac5e00bd51Adam Powell for (int i = childCount - 1; i >= 0; i--) { 3124458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final View child = getChildAt(i); 3125458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (child.getTop() <= bottom) { 3126458034799861fef47e00d85d528b4dac5e00bd51Adam Powell break; 3127458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } else { 3128458034799861fef47e00d85d528b4dac5e00bd51Adam Powell start = i; 3129458034799861fef47e00d85d528b4dac5e00bd51Adam Powell count++; 3130458034799861fef47e00d85d528b4dac5e00bd51Adam Powell int position = firstPosition + i; 3131458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (position >= headerViewsCount && position < footerViewsStart) { 3132458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mRecycler.addScrapView(child); 3133458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 3134458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (ViewDebug.TRACE_RECYCLER) { 3135458034799861fef47e00d85d528b4dac5e00bd51Adam Powell ViewDebug.trace(child, 3136458034799861fef47e00d85d528b4dac5e00bd51Adam Powell ViewDebug.RecyclerTraceType.MOVE_TO_SCRAP_HEAP, 3137458034799861fef47e00d85d528b4dac5e00bd51Adam Powell firstPosition + i, -1); 31389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 31399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 31409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 31419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3142458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 3143458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 3144458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mMotionViewNewTop = mMotionViewOriginalTop + deltaY; 31459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3146458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mBlockLayoutRequests = true; 31479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3148458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (count > 0) { 31499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project detachViewsFromParent(start, count); 3150458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 3151458034799861fef47e00d85d528b4dac5e00bd51Adam Powell offsetChildrenTopAndBottom(incrementalDeltaY); 31529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3153458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (down) { 3154458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mFirstPosition += count; 3155458034799861fef47e00d85d528b4dac5e00bd51Adam Powell } 3156029cfbd6f28e1664e8ef77ea928560f20ac3fb8eAdam Powell 3157458034799861fef47e00d85d528b4dac5e00bd51Adam Powell invalidate(); 31589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3159458034799861fef47e00d85d528b4dac5e00bd51Adam Powell final int absIncrementalDeltaY = Math.abs(incrementalDeltaY); 3160458034799861fef47e00d85d528b4dac5e00bd51Adam Powell if (spaceAbove < absIncrementalDeltaY || spaceBelow < absIncrementalDeltaY) { 3161458034799861fef47e00d85d528b4dac5e00bd51Adam Powell fillGap(down); 31629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3163458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 3164029cfbd6f28e1664e8ef77ea928560f20ac3fb8eAdam Powell if (!inTouchMode && mSelectedPosition != INVALID_POSITION) { 31652a20ddd90bb9eeab56ffaa916ed062dfd5cf7fa6Adam Powell final int childIndex = mSelectedPosition - mFirstPosition; 31662a20ddd90bb9eeab56ffaa916ed062dfd5cf7fa6Adam Powell if (childIndex >= 0 && childIndex < getChildCount()) { 31672a20ddd90bb9eeab56ffaa916ed062dfd5cf7fa6Adam Powell positionSelector(getChildAt(childIndex)); 31682a20ddd90bb9eeab56ffaa916ed062dfd5cf7fa6Adam Powell } 3169029cfbd6f28e1664e8ef77ea928560f20ac3fb8eAdam Powell } 3170029cfbd6f28e1664e8ef77ea928560f20ac3fb8eAdam Powell 3171458034799861fef47e00d85d528b4dac5e00bd51Adam Powell mBlockLayoutRequests = false; 3172458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 3173458034799861fef47e00d85d528b4dac5e00bd51Adam Powell invokeOnItemScrollListener(); 3174458034799861fef47e00d85d528b4dac5e00bd51Adam Powell awakenScrollBars(); 3175458034799861fef47e00d85d528b4dac5e00bd51Adam Powell 3176458034799861fef47e00d85d528b4dac5e00bd51Adam Powell return false; 31779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 31789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 31799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 31809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the number of header views in the list. Header views are special views 31819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * at the top of the list that should not be recycled during a layout. 31829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 31839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The number of header views, 0 in the default implementation. 31849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 31859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getHeaderViewsCount() { 31869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 31879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 31889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 31899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 31909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the number of footer views in the list. Footer views are special views 31919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * at the bottom of the list that should not be recycled during a layout. 31929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 31939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The number of footer views, 0 in the default implementation. 31949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 31959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int getFooterViewsCount() { 31969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 31979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 31989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 31999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 32009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Fills the gap left open by a touch-scroll. During a touch scroll, children that 32019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * remain on screen are shifted and the other ones are discarded. The role of this 32029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * method is to fill the gap thus created by performing a partial layout in the 32039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * empty space. 32049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 32059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param down true if the scroll is going down, false if it is going up 32069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 32079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project abstract void fillGap(boolean down); 32089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 32099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void hideSelector() { 32109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mSelectedPosition != INVALID_POSITION) { 3211ab3e1052823620a91a1330b31da6aaf530ed8c3bAdam Powell if (mLayoutMode != LAYOUT_SPECIFIC) { 3212ab3e1052823620a91a1330b31da6aaf530ed8c3bAdam Powell mResurrectToPosition = mSelectedPosition; 3213ab3e1052823620a91a1330b31da6aaf530ed8c3bAdam Powell } 32149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mNextSelectedPosition >= 0 && mNextSelectedPosition != mSelectedPosition) { 32159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mResurrectToPosition = mNextSelectedPosition; 32169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 32179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelectedPositionInt(INVALID_POSITION); 32189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setNextSelectedPositionInt(INVALID_POSITION); 32199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectedTop = 0; 32209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectorRect.setEmpty(); 32219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 32229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 32239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 32249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 32259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return A position to select. First we try mSelectedPosition. If that has been clobbered by 32269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * entering touch mode, we then try mResurrectToPosition. Values are pinned to the range 32279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * of items available in the adapter 32289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 32299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int reconcileSelectedPosition() { 32309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int position = mSelectedPosition; 32319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (position < 0) { 32329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project position = mResurrectToPosition; 32339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 32349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project position = Math.max(0, position); 32359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project position = Math.min(position, mItemCount - 1); 32369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return position; 32379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 32389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 32399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 32409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Find the row closest to y. This row will be used as the motion row when scrolling 32419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 32429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y Where the user touched 32434cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell * @return The position of the first (or only) item in the row containing y 32449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 32459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project abstract int findMotionRow(int y); 32464cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell 32474cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell /** 32484cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell * Find the row closest to y. This row will be used as the motion row when scrolling. 32494cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell * 32504cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell * @param y Where the user touched 32514cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell * @return The position of the first (or only) item in the row closest to y 32524cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell */ 32534cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell int findClosestMotionRow(int y) { 32544cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell final int childCount = getChildCount(); 32554cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell if (childCount == 0) { 32564cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell return INVALID_POSITION; 32574cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell } 32584cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell 32594cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell final int motionRow = findMotionRow(y); 32604cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell return motionRow != INVALID_POSITION ? motionRow : mFirstPosition + childCount - 1; 32614cd47702f00a2fd6d6bc16c5398edb884d98bdcaAdam Powell } 32629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 32639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 32649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Causes all the views to be rebuilt and redrawn. 32659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 32669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void invalidateViews() { 32679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDataChanged = true; 32689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project rememberSyncState(); 32699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 32709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invalidate(); 32719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 32729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 32739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 32749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Makes the item at the supplied position selected. 32759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 32769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position the position of the new selection 32779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 32789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project abstract void setSelectionInt(int position); 32799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 32809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 32819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Attempt to bring the selection back if the user is switching from touch 32829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to trackball mode 32839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Whether selection was set to something. 32849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 32859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean resurrectSelection() { 32869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childCount = getChildCount(); 32879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 32889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childCount <= 0) { 32899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 32909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 32919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 32929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int selectedTop = 0; 32939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int selectedPos; 32949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childrenTop = mListPadding.top; 32959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childrenBottom = mBottom - mTop - mListPadding.bottom; 32969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int firstPosition = mFirstPosition; 32979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int toPosition = mResurrectToPosition; 32989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean down = true; 32999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (toPosition >= firstPosition && toPosition < firstPosition + childCount) { 33019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedPos = toPosition; 33029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View selected = getChildAt(selectedPos - mFirstPosition); 33049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedTop = selected.getTop(); 33059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int selectedBottom = selected.getBottom(); 33069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // We are scrolled, don't get in the fade 33089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (selectedTop < childrenTop) { 33099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedTop = childrenTop + getVerticalFadingEdgeLength(); 33109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (selectedBottom > childrenBottom) { 33119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedTop = childrenBottom - selected.getMeasuredHeight() 33129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project - getVerticalFadingEdgeLength(); 33139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 33159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (toPosition < firstPosition) { 33169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Default to selecting whatever is first 33179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedPos = firstPosition; 33189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < childCount; i++) { 33199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View v = getChildAt(i); 33209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int top = v.getTop(); 33219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (i == 0) { 33239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remember the position of the first item 33249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedTop = top; 33259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // See if we are scrolled at all 33269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (firstPosition > 0 || top < childrenTop) { 33279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If we are scrolled, don't select anything that is 33289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // in the fade region 33299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childrenTop += getVerticalFadingEdgeLength(); 33309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (top >= childrenTop) { 33339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Found a view whose top is fully visisble 33349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedPos = firstPosition + i; 33359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedTop = top; 33369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 33379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 33409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int itemCount = mItemCount; 33419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project down = false; 33429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedPos = firstPosition + childCount - 1; 33439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = childCount - 1; i >= 0; i--) { 33459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View v = getChildAt(i); 33469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int top = v.getTop(); 33479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int bottom = v.getBottom(); 33489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (i == childCount - 1) { 33509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedTop = top; 33519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (firstPosition + childCount < itemCount || bottom > childrenBottom) { 33529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childrenBottom -= getVerticalFadingEdgeLength(); 33539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (bottom <= childrenBottom) { 33579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedPos = firstPosition + i; 33589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedTop = top; 33599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 33609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mResurrectToPosition = INVALID_POSITION; 33669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project removeCallbacks(mFlingRunnable); 33679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTouchMode = TOUCH_MODE_REST; 33689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project clearScrollingCache(); 33699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSpecificTop = selectedTop; 33709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedPos = lookForSelectablePosition(selectedPos, down); 33719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (selectedPos >= firstPosition && selectedPos <= getLastVisiblePosition()) { 33729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutMode = LAYOUT_SPECIFIC; 33739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelectionInt(selectedPos); 33749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invokeOnItemScrollListener(); 33759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 33769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedPos = INVALID_POSITION; 33779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project reportScrollStateChange(OnScrollListener.SCROLL_STATE_IDLE); 33799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return selectedPos >= 0; 33819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 33849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void handleDataChanged() { 33859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int count = mItemCount; 33869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (count > 0) { 33879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int newPos; 33899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int selectablePos; 33919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Find the row we are supposed to sync to 33939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mNeedSync) { 33949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Update this first, since setNextSelectedPositionInt inspects it 33959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNeedSync = false; 33969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mTranscriptMode == TRANSCRIPT_MODE_ALWAYS_SCROLL || 33989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (mTranscriptMode == TRANSCRIPT_MODE_NORMAL && 33999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFirstPosition + getChildCount() >= mOldItemCount)) { 34009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutMode = LAYOUT_FORCE_BOTTOM; 34019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 34029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 34039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 34049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (mSyncMode) { 34059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case SYNC_SELECTED_POSITION: 34069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (isInTouchMode()) { 34079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // We saved our state when not in touch mode. (We know this because 34089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // mSyncMode is SYNC_SELECTED_POSITION.) Now we are trying to 34099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // restore in touch mode. Just leave mSyncPosition as it is (possibly 34109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // adjusting if the available range changed) and return. 34119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutMode = LAYOUT_SYNC; 34129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSyncPosition = Math.min(Math.max(0, mSyncPosition), count - 1); 34139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 34149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 34159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 34169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // See if we can find a position in the new data with the same 34179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // id as the old selection. This will change mSyncPosition. 34189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project newPos = findSyncPosition(); 34199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (newPos >= 0) { 34209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Found it. Now verify that new selection is still selectable 34219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectablePos = lookForSelectablePosition(newPos, true); 34229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (selectablePos == newPos) { 34239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Same row id is selected 34249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSyncPosition = newPos; 34259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 34269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mSyncHeight == getHeight()) { 34279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If we are at the same height as when we saved state, try 34289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // to restore the scroll position too. 34299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutMode = LAYOUT_SYNC; 34309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 34319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // We are not the same height as when the selection was saved, so 34329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // don't try to restore the exact position 34339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutMode = LAYOUT_SET_SELECTION; 34349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 34359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 34369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Restore selection 34379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setNextSelectedPositionInt(newPos); 34389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 34399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 34409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 34419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 34429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 34439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case SYNC_FIRST_POSITION: 34449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Leave mSyncPosition as it is -- just pin to available range 34459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutMode = LAYOUT_SYNC; 34469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSyncPosition = Math.min(Math.max(0, mSyncPosition), count - 1); 34479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 34489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 34499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 34509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 34519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 34529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!isInTouchMode()) { 34539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // We couldn't find matching data -- try to use the same position 34549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project newPos = getSelectedItemPosition(); 34559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 34569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Pin position to the available range 34579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (newPos >= count) { 34589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project newPos = count - 1; 34599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 34609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (newPos < 0) { 34619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project newPos = 0; 34629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 34639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 34649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Make sure we select something selectable -- first look down 34659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectablePos = lookForSelectablePosition(newPos, true); 34669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 34679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (selectablePos >= 0) { 34689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setNextSelectedPositionInt(selectablePos); 34699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 34709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 34719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Looking down didn't work -- try looking up 34729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectablePos = lookForSelectablePosition(newPos, false); 34739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (selectablePos >= 0) { 34749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setNextSelectedPositionInt(selectablePos); 34759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 34769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 34779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 34789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 34799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 34809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // We already know where we want to resurrect the selection 34819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mResurrectToPosition >= 0) { 34829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 34839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 34849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 34859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 34869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 34879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 34889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Nothing is selected. Give up and reset everything. 34899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutMode = mStackFromBottom ? LAYOUT_FORCE_BOTTOM : LAYOUT_FORCE_TOP; 34909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectedPosition = INVALID_POSITION; 34919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectedRowId = INVALID_ROW_ID; 34929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNextSelectedPosition = INVALID_POSITION; 34939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNextSelectedRowId = INVALID_ROW_ID; 34949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNeedSync = false; 34959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkSelectionChanged(); 34969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 34979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 349843c9cdffb619f93d9d4525dffd05701dc9c8c4bfRomain Guy @Override 349943c9cdffb619f93d9d4525dffd05701dc9c8c4bfRomain Guy protected void onDisplayHint(int hint) { 350043c9cdffb619f93d9d4525dffd05701dc9c8c4bfRomain Guy super.onDisplayHint(hint); 350143c9cdffb619f93d9d4525dffd05701dc9c8c4bfRomain Guy switch (hint) { 350243c9cdffb619f93d9d4525dffd05701dc9c8c4bfRomain Guy case INVISIBLE: 350343c9cdffb619f93d9d4525dffd05701dc9c8c4bfRomain Guy if (mPopup != null && mPopup.isShowing()) { 350443c9cdffb619f93d9d4525dffd05701dc9c8c4bfRomain Guy dismissPopup(); 350543c9cdffb619f93d9d4525dffd05701dc9c8c4bfRomain Guy } 350643c9cdffb619f93d9d4525dffd05701dc9c8c4bfRomain Guy break; 350743c9cdffb619f93d9d4525dffd05701dc9c8c4bfRomain Guy case VISIBLE: 350843c9cdffb619f93d9d4525dffd05701dc9c8c4bfRomain Guy if (mFiltered && mPopup != null && !mPopup.isShowing()) { 350943c9cdffb619f93d9d4525dffd05701dc9c8c4bfRomain Guy showPopup(); 351043c9cdffb619f93d9d4525dffd05701dc9c8c4bfRomain Guy } 351143c9cdffb619f93d9d4525dffd05701dc9c8c4bfRomain Guy break; 351243c9cdffb619f93d9d4525dffd05701dc9c8c4bfRomain Guy } 351324562487126b48c8ff39a42b76f3705f238da6c8Romain Guy mPopupHidden = hint == INVISIBLE; 351443c9cdffb619f93d9d4525dffd05701dc9c8c4bfRomain Guy } 351543c9cdffb619f93d9d4525dffd05701dc9c8c4bfRomain Guy 35169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 35179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Removes the filter window 35189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3519d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy private void dismissPopup() { 35209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mPopup != null) { 35219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPopup.dismiss(); 35229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 35239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 35249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 35259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 35269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Shows the filter window 35279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 35289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void showPopup() { 35299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Make sure we have a window before showing the popup 35309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (getWindowVisibility() == View.VISIBLE) { 35314df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project createTextFilter(true); 3532b2a3dd88a53cc8c6d19f6dc8ec4f3d6c4abd9b54The Android Open Source Project positionPopup(); 35339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Make sure we get focus if we are showing the popup 35349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkFocus(); 35359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 35369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 35379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3538b2a3dd88a53cc8c6d19f6dc8ec4f3d6c4abd9b54The Android Open Source Project private void positionPopup() { 35399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int screenHeight = getResources().getDisplayMetrics().heightPixels; 35409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int[] xy = new int[2]; 35419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project getLocationOnScreen(xy); 354224443ea3992e372e47daa50266b0f2ec38cac388Romain Guy // TODO: The 20 below should come from the theme 35439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // TODO: And the gravity should be defined in the theme as well 35449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int bottomGap = screenHeight - xy[1] - getHeight() + (int) (mDensityScale * 20); 3545b2a3dd88a53cc8c6d19f6dc8ec4f3d6c4abd9b54The Android Open Source Project if (!mPopup.isShowing()) { 35469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPopup.showAtLocation(this, Gravity.BOTTOM | Gravity.CENTER_HORIZONTAL, 35479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project xy[0], bottomGap); 35489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 35499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPopup.update(xy[0], bottomGap, -1, -1); 35509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 35519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 35529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 35539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 35549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * What is the distance between the source and destination rectangles given the direction of 35559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * focus navigation between them? The direction basically helps figure out more quickly what is 35569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * self evident by the relationship between the rects... 35579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 35589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param source the source rectangle 35599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param dest the destination rectangle 35609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param direction the direction 35619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the distance between the rectangles 35629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 35639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static int getDistance(Rect source, Rect dest, int direction) { 35649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int sX, sY; // source x, y 35659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int dX, dY; // dest x, y 35669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (direction) { 35679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case View.FOCUS_RIGHT: 35689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sX = source.right; 35699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sY = source.top + source.height() / 2; 35709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dX = dest.left; 35719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dY = dest.top + dest.height() / 2; 35729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 35739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case View.FOCUS_DOWN: 35749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sX = source.left + source.width() / 2; 35759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sY = source.bottom; 35769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dX = dest.left + dest.width() / 2; 35779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dY = dest.top; 35789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 35799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case View.FOCUS_LEFT: 35809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sX = source.left; 35819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sY = source.top + source.height() / 2; 35829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dX = dest.right; 35839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dY = dest.top + dest.height() / 2; 35849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 35859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case View.FOCUS_UP: 35869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sX = source.left + source.width() / 2; 35879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sY = source.top; 35889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dX = dest.left + dest.width() / 2; 35899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dY = dest.bottom; 35909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 35919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project default: 35929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("direction must be one of " 35939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "{FOCUS_UP, FOCUS_DOWN, FOCUS_LEFT, FOCUS_RIGHT}."); 35949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 35959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int deltaX = dX - sX; 35969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int deltaY = dY - sY; 35979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return deltaY * deltaY + deltaX * deltaX; 35989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 35999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 36019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected boolean isInFilterMode() { 36029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mFiltered; 36039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 36069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sends a key to the text filter window 36079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 36089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param keyCode The keycode for the event 36099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param event The actual key event 36109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 36119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True if the text filter handled the event, false otherwise. 36129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 36139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean sendToTextFilter(int keyCode, int count, KeyEvent event) { 3614b2a3dd88a53cc8c6d19f6dc8ec4f3d6c4abd9b54The Android Open Source Project if (!acceptFilter()) { 36159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 36169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean handled = false; 36199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean okToSend = true; 36209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (keyCode) { 36219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_DPAD_UP: 36229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_DPAD_DOWN: 36239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_DPAD_LEFT: 36249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_DPAD_RIGHT: 36259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_DPAD_CENTER: 36269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_ENTER: 36279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project okToSend = false; 36289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 36299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_BACK: 363083fe3f559249451706957b1a5f660b2b8272f114Dianne Hackborn if (mFiltered && mPopup != null && mPopup.isShowing()) { 36318d37426c754e9822feaa8c6cc0b7c13e8523e217Dianne Hackborn if (event.getAction() == KeyEvent.ACTION_DOWN 36328d37426c754e9822feaa8c6cc0b7c13e8523e217Dianne Hackborn && event.getRepeatCount() == 0) { 36338d37426c754e9822feaa8c6cc0b7c13e8523e217Dianne Hackborn getKeyDispatcherState().startTracking(event, this); 363483fe3f559249451706957b1a5f660b2b8272f114Dianne Hackborn handled = true; 363583fe3f559249451706957b1a5f660b2b8272f114Dianne Hackborn } else if (event.getAction() == KeyEvent.ACTION_UP 363683fe3f559249451706957b1a5f660b2b8272f114Dianne Hackborn && event.isTracking() && !event.isCanceled()) { 363783fe3f559249451706957b1a5f660b2b8272f114Dianne Hackborn handled = true; 363883fe3f559249451706957b1a5f660b2b8272f114Dianne Hackborn mTextFilter.setText(""); 363983fe3f559249451706957b1a5f660b2b8272f114Dianne Hackborn } 36409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project okToSend = false; 36429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 36439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_SPACE: 36449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Only send spaces once we are filtered 3645cf6c5720a759709db69f253c36646d22ceb23f90Romain Guy okToSend = mFiltered; 36469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 36479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3649b2a3dd88a53cc8c6d19f6dc8ec4f3d6c4abd9b54The Android Open Source Project if (okToSend) { 36509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project createTextFilter(true); 36519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project KeyEvent forwardEvent = event; 36539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (forwardEvent.getRepeatCount() > 0) { 3654105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project forwardEvent = KeyEvent.changeTimeRepeat(event, event.getEventTime(), 0); 36559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int action = event.getAction(); 36589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (action) { 36599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.ACTION_DOWN: 36609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handled = mTextFilter.onKeyDown(keyCode, forwardEvent); 36619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 36629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.ACTION_UP: 36649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handled = mTextFilter.onKeyUp(keyCode, forwardEvent); 36659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 36669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.ACTION_MULTIPLE: 36689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handled = mTextFilter.onKeyMultiple(keyCode, count, event); 36699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 36709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return handled; 36739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3676b2a3dd88a53cc8c6d19f6dc8ec4f3d6c4abd9b54The Android Open Source Project * Return an InputConnection for editing of the filter text. 3677b2a3dd88a53cc8c6d19f6dc8ec4f3d6c4abd9b54The Android Open Source Project */ 3678b2a3dd88a53cc8c6d19f6dc8ec4f3d6c4abd9b54The Android Open Source Project @Override 3679b2a3dd88a53cc8c6d19f6dc8ec4f3d6c4abd9b54The Android Open Source Project public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3680c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project if (isTextFilterEnabled()) { 3681c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project // XXX we need to have the text filter created, so we can get an 3682c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project // InputConnection to proxy to. Unfortunately this means we pretty 3683c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project // much need to make it as soon as a list view gets focus. 3684c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project createTextFilter(false); 36851bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn if (mPublicInputConnection == null) { 36861bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn mDefInputConnection = new BaseInputConnection(this, false); 36871bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn mPublicInputConnection = new InputConnectionWrapper( 36881bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn mTextFilter.onCreateInputConnection(outAttrs), true) { 36891bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn @Override 36901bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn public boolean reportFullscreenMode(boolean enabled) { 36911bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn // Use our own input connection, since it is 36921bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn // the "real" one the IME is talking with. 36931bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn return mDefInputConnection.reportFullscreenMode(enabled); 36941bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn } 36951bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn 36961bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn @Override 36971bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn public boolean performEditorAction(int editorAction) { 36981bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn // The editor is off in its own window; we need to be 36991bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn // the one that does this. 37001bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn if (editorAction == EditorInfo.IME_ACTION_DONE) { 37011bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn InputMethodManager imm = (InputMethodManager) 37021bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn getContext().getSystemService( 37031bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn Context.INPUT_METHOD_SERVICE); 37041bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn if (imm != null) { 37051bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn imm.hideSoftInputFromWindow(getWindowToken(), 0); 37061bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn } 37071bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn return true; 37081bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn } 37091bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn return false; 37101bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn } 37111bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn 37121bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn @Override 37131bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn public boolean sendKeyEvent(KeyEvent event) { 37141bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn // Use our own input connection, since the filter 37151bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn // text view may not be shown in a window so has 37161bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn // no ViewRoot to dispatch events with. 37171bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn return mDefInputConnection.sendKeyEvent(event); 37181bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn } 37191bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn }; 37201bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn } 37211bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn outAttrs.inputType = EditorInfo.TYPE_CLASS_TEXT 37221bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn | EditorInfo.TYPE_TEXT_VARIATION_FILTER; 37231bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn outAttrs.imeOptions = EditorInfo.IME_ACTION_DONE; 37241bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn return mPublicInputConnection; 3725c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project } 3726c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project return null; 3727b2a3dd88a53cc8c6d19f6dc8ec4f3d6c4abd9b54The Android Open Source Project } 37280a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy 3729b2a3dd88a53cc8c6d19f6dc8ec4f3d6c4abd9b54The Android Open Source Project /** 3730b2a3dd88a53cc8c6d19f6dc8ec4f3d6c4abd9b54The Android Open Source Project * For filtering we proxy an input connection to an internal text editor, 3731b2a3dd88a53cc8c6d19f6dc8ec4f3d6c4abd9b54The Android Open Source Project * and this allows the proxying to happen. 3732b2a3dd88a53cc8c6d19f6dc8ec4f3d6c4abd9b54The Android Open Source Project */ 3733b2a3dd88a53cc8c6d19f6dc8ec4f3d6c4abd9b54The Android Open Source Project @Override 3734b2a3dd88a53cc8c6d19f6dc8ec4f3d6c4abd9b54The Android Open Source Project public boolean checkInputConnectionProxy(View view) { 3735b2a3dd88a53cc8c6d19f6dc8ec4f3d6c4abd9b54The Android Open Source Project return view == mTextFilter; 3736b2a3dd88a53cc8c6d19f6dc8ec4f3d6c4abd9b54The Android Open Source Project } 37370a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy 3738b2a3dd88a53cc8c6d19f6dc8ec4f3d6c4abd9b54The Android Open Source Project /** 37399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Creates the window for the text filter and populates it with an EditText field; 37409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 37419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param animateEntrance true if the window should appear with an animation 37429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 37439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void createTextFilter(boolean animateEntrance) { 37449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mPopup == null) { 37459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Context c = getContext(); 37469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project PopupWindow p = new PopupWindow(c); 37474df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project LayoutInflater layoutInflater = (LayoutInflater) 37484df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project c.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 37499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTextFilter = (EditText) layoutInflater.inflate( 37509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project com.android.internal.R.layout.typing_filter, null); 3751b2a3dd88a53cc8c6d19f6dc8ec4f3d6c4abd9b54The Android Open Source Project // For some reason setting this as the "real" input type changes 3752b2a3dd88a53cc8c6d19f6dc8ec4f3d6c4abd9b54The Android Open Source Project // the text view in some way that it doesn't work, and I don't 3753b2a3dd88a53cc8c6d19f6dc8ec4f3d6c4abd9b54The Android Open Source Project // want to figure out why this is. 3754b2a3dd88a53cc8c6d19f6dc8ec4f3d6c4abd9b54The Android Open Source Project mTextFilter.setRawInputType(EditorInfo.TYPE_CLASS_TEXT 3755b2a3dd88a53cc8c6d19f6dc8ec4f3d6c4abd9b54The Android Open Source Project | EditorInfo.TYPE_TEXT_VARIATION_FILTER); 3756105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project mTextFilter.setImeOptions(EditorInfo.IME_FLAG_NO_EXTRACT_UI); 37579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTextFilter.addTextChangedListener(this); 37589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project p.setFocusable(false); 37599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project p.setTouchable(false); 37609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project p.setInputMethodMode(PopupWindow.INPUT_METHOD_NOT_NEEDED); 37619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project p.setContentView(mTextFilter); 37629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project p.setWidth(LayoutParams.WRAP_CONTENT); 37639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project p.setHeight(LayoutParams.WRAP_CONTENT); 37649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project p.setBackgroundDrawable(null); 37659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPopup = p; 37669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project getViewTreeObserver().addOnGlobalLayoutListener(this); 3767d6a463a9f23b3901bf729f2f27a6bb8f78b95248Romain Guy mGlobalLayoutListenerAddedFilter = true; 37689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 37699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (animateEntrance) { 37709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPopup.setAnimationStyle(com.android.internal.R.style.Animation_TypingFilter); 37719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 37729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mPopup.setAnimationStyle(com.android.internal.R.style.Animation_TypingFilterRestore); 37739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 37749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 37759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 37769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 37779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Clear the text filter. 37789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 37799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void clearTextFilter() { 37809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mFiltered) { 37819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTextFilter.setText(""); 37829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFiltered = false; 37839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mPopup != null && mPopup.isShowing()) { 37849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dismissPopup(); 37859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 37869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 37879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 37889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 37899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 37909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns if the ListView currently has a text filter. 37919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 37929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean hasTextFilter() { 37939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mFiltered; 37949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 37959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 37969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onGlobalLayout() { 37979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (isShown()) { 37989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Show the popup if we are filtered 379924562487126b48c8ff39a42b76f3705f238da6c8Romain Guy if (mFiltered && mPopup != null && !mPopup.isShowing() && !mPopupHidden) { 38009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project showPopup(); 38019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 38029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 38039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Hide the popup when we are no longer visible 380443c9cdffb619f93d9d4525dffd05701dc9c8c4bfRomain Guy if (mPopup != null && mPopup.isShowing()) { 38059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dismissPopup(); 38069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 38079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 38089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 38099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 38109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 38119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 38121bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn * For our text watcher that is associated with the text filter. Does 38131bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn * nothing. 38149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 38159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void beforeTextChanged(CharSequence s, int start, int count, int after) { 38169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 38179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 38189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 38191bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn * For our text watcher that is associated with the text filter. Performs 38201bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn * the actual filtering as the text changes, and takes care of hiding and 38211bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn * showing the popup displaying the currently entered filter text. 38229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 38239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onTextChanged(CharSequence s, int start, int before, int count) { 3824c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project if (mPopup != null && isTextFilterEnabled()) { 38259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int length = s.length(); 38269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean showing = mPopup.isShowing(); 38279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!showing && length > 0) { 38289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Show the filter popup if necessary 38299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project showPopup(); 38309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFiltered = true; 38319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (showing && length == 0) { 38329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remove the filter popup if the user has cleared all text 38331bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn dismissPopup(); 38349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFiltered = false; 38359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 38369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mAdapter instanceof Filterable) { 38379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Filter f = ((Filterable) mAdapter).getFilter(); 38389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Filter should not be null when we reach this part 38399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (f != null) { 38409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project f.filter(s, this); 38419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 38429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalStateException("You cannot call onTextChanged with a non " 38439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "filterable adapter"); 38449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 38459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 38469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 38479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 38489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 38499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 38501bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn * For our text watcher that is associated with the text filter. Does 38511bf5e22da72b477c8b7a45ed85a4dba94be39db5Dianne Hackborn * nothing. 38529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 38539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void afterTextChanged(Editable s) { 38549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 38559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 38569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onFilterComplete(int count) { 38579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mSelectedPosition < 0 && count > 0) { 38589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mResurrectToPosition = INVALID_POSITION; 38599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project resurrectSelection(); 38609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 38619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 38629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 38639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 38649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected ViewGroup.LayoutParams generateLayoutParams(ViewGroup.LayoutParams p) { 38659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new LayoutParams(p); 38669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 38679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 38689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 38699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams generateLayoutParams(AttributeSet attrs) { 38709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new AbsListView.LayoutParams(getContext(), attrs); 38719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 38729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 38739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 38749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected boolean checkLayoutParams(ViewGroup.LayoutParams p) { 38759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return p instanceof AbsListView.LayoutParams; 38769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 38779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 38789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 38799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Puts the list or grid into transcript mode. In this mode the list or grid will always scroll 38809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to the bottom to show new items. 38819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 38829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param mode the transcript mode to set 38839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 38849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #TRANSCRIPT_MODE_DISABLED 38859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #TRANSCRIPT_MODE_NORMAL 38869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #TRANSCRIPT_MODE_ALWAYS_SCROLL 38879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 38889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setTranscriptMode(int mode) { 38899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTranscriptMode = mode; 38909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 38919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 38929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 38939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the current transcript mode. 38949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 38959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return {@link #TRANSCRIPT_MODE_DISABLED}, {@link #TRANSCRIPT_MODE_NORMAL} or 38969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #TRANSCRIPT_MODE_ALWAYS_SCROLL} 38979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 38989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getTranscriptMode() { 38999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mTranscriptMode; 39009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 39019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 39029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 39039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getSolidColor() { 39049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mCacheColorHint; 39059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 39069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 39079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 39089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * When set to a non-zero value, the cache color hint indicates that this list is always drawn 39099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * on top of a solid, single-color, opaque background 39109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 39119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param color The background color 39129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 39139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setCacheColorHint(int color) { 391452e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy if (color != mCacheColorHint) { 391552e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy mCacheColorHint = color; 391652e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy int count = getChildCount(); 391752e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy for (int i = 0; i < count; i++) { 391852e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy getChildAt(i).setDrawingCacheBackgroundColor(color); 391952e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy } 392052e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy mRecycler.setCacheColorHint(color); 392152e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy } 39229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 39239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 39249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 39259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * When set to a non-zero value, the cache color hint indicates that this list is always drawn 39269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * on top of a solid, single-color, opaque background 39279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 39289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The cache color hint 39299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 39309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getCacheColorHint() { 39319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mCacheColorHint; 39329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 39339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 39349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 39359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Move all views (excluding headers and footers) held by this AbsListView into the supplied 39369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * List. This includes views displayed on the screen as well as views stored in AbsListView's 39379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * internal view recycler. 39389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 39399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param views A list into which to put the reclaimed views 39409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 39419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void reclaimViews(List<View> views) { 39429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childCount = getChildCount(); 39439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project RecyclerListener listener = mRecycler.mRecyclerListener; 39449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 39459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Reclaim views on screen 39469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < childCount; i++) { 39479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View child = getChildAt(i); 394813922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy AbsListView.LayoutParams lp = (AbsListView.LayoutParams) child.getLayoutParams(); 39499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Don't reclaim header or footer views, or views that should be ignored 39509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lp != null && mRecycler.shouldRecycleViewType(lp.viewType)) { 39519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project views.add(child); 39529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (listener != null) { 39539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Pretend they went through the scrap heap 39549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project listener.onMovedToScrapHeap(child); 39559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 39569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 39579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 39589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mRecycler.reclaimScrapViews(views); 39599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project removeAllViewsInLayout(); 39609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 39619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 39629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 396313922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy * @hide 396413922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy */ 396513922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy @Override 396613922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy protected boolean onConsistencyCheck(int consistency) { 396713922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy boolean result = super.onConsistencyCheck(consistency); 396813922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy 396913922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy final boolean checkLayout = (consistency & ViewDebug.CONSISTENCY_LAYOUT) != 0; 397013922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy 397113922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy if (checkLayout) { 397213922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy // The active recycler must be empty 397313922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy final View[] activeViews = mRecycler.mActiveViews; 397413922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy int count = activeViews.length; 397513922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy for (int i = 0; i < count; i++) { 397613922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy if (activeViews[i] != null) { 397713922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy result = false; 397813922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy android.util.Log.d(ViewDebug.CONSISTENCY_LOG_TAG, 397913922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy "AbsListView " + this + " has a view in its active recycler: " + 398013922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy activeViews[i]); 398113922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy } 398213922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy } 398313922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy 398413922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy // All views in the recycler must NOT be on screen and must NOT have a parent 398513922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy final ArrayList<View> scrap = mRecycler.mCurrentScrap; 398613922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy if (!checkScrap(scrap)) result = false; 398713922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy final ArrayList<View>[] scraps = mRecycler.mScrapViews; 398813922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy count = scraps.length; 398913922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy for (int i = 0; i < count; i++) { 399013922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy if (!checkScrap(scraps[i])) result = false; 399113922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy } 399213922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy } 399313922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy 399413922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy return result; 399513922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy } 399613922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy 399713922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy private boolean checkScrap(ArrayList<View> scrap) { 399813922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy if (scrap == null) return true; 399913922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy boolean result = true; 400013922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy 400113922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy final int count = scrap.size(); 400213922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy for (int i = 0; i < count; i++) { 400313922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy final View view = scrap.get(i); 400413922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy if (view.getParent() != null) { 400513922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy result = false; 400613922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy android.util.Log.d(ViewDebug.CONSISTENCY_LOG_TAG, "AbsListView " + this + 400713922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy " has a view in its scrap heap still attached to a parent: " + view); 400813922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy } 400913922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy if (indexOfChild(view) >= 0) { 401013922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy result = false; 401113922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy android.util.Log.d(ViewDebug.CONSISTENCY_LOG_TAG, "AbsListView " + this + 401213922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy " has a view in its scrap heap that is also a direct child: " + view); 401313922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy } 401413922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy } 401513922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy 401613922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy return result; 401713922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy } 401813922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy 401913922e03037d71a538f24ddf61c0b61bb4eb5af0Romain Guy /** 40209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sets the recycler listener to be notified whenever a View is set aside in 40219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the recycler for later reuse. This listener can be used to free resources 40229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * associated to the View. 40239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 40249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param listener The recycler listener to be notified of views set aside 40259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * in the recycler. 40269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 40279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see android.widget.AbsListView.RecycleBin 40289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see android.widget.AbsListView.RecyclerListener 40299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 40309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setRecyclerListener(RecyclerListener listener) { 40319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mRecycler.mRecyclerListener = listener; 40329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 40339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 40349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 40359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * AbsListView extends LayoutParams to provide a place to hold the view type. 40369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 40379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static class LayoutParams extends ViewGroup.LayoutParams { 40389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 40399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * View type for this view, as returned by 40409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.widget.Adapter#getItemViewType(int) } 40419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 40429bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell @ViewDebug.ExportedProperty(mapping = { 40439bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell @ViewDebug.IntToString(from = ITEM_VIEW_TYPE_IGNORE, to = "ITEM_VIEW_TYPE_IGNORE"), 40449bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell @ViewDebug.IntToString(from = ITEM_VIEW_TYPE_HEADER_OR_FOOTER, to = "ITEM_VIEW_TYPE_HEADER_OR_FOOTER") 40459bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell }) 40469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int viewType; 40479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 40484df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project /** 40494df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project * When this boolean is set, the view has been added to the AbsListView 40504df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project * at least once. It is used to know whether headers/footers have already 40514df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project * been added to the list view and whether they should be treated as 40524df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project * recycled views or not. 40534df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project */ 40549bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell @ViewDebug.ExportedProperty 40554df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project boolean recycledHeaderFooter; 40564df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project 40570bf88594c43ced48d862d122e3e84967b3b63658Romain Guy /** 40580bf88594c43ced48d862d122e3e84967b3b63658Romain Guy * When an AbsListView is measured with an AT_MOST measure spec, it needs 40590bf88594c43ced48d862d122e3e84967b3b63658Romain Guy * to obtain children views to measure itself. When doing so, the children 40600bf88594c43ced48d862d122e3e84967b3b63658Romain Guy * are not attached to the window, but put in the recycler which assumes 40610bf88594c43ced48d862d122e3e84967b3b63658Romain Guy * they've been attached before. Setting this flag will force the reused 40620bf88594c43ced48d862d122e3e84967b3b63658Romain Guy * view to be attached to the window rather than just attached to the 40630bf88594c43ced48d862d122e3e84967b3b63658Romain Guy * parent. 40640bf88594c43ced48d862d122e3e84967b3b63658Romain Guy */ 40650bf88594c43ced48d862d122e3e84967b3b63658Romain Guy @ViewDebug.ExportedProperty 40660bf88594c43ced48d862d122e3e84967b3b63658Romain Guy boolean forceAdd; 40670bf88594c43ced48d862d122e3e84967b3b63658Romain Guy 40689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(Context c, AttributeSet attrs) { 40699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(c, attrs); 40709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 40719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 40729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(int w, int h) { 40739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(w, h); 40749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 40759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 40769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(int w, int h, int viewType) { 40779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(w, h); 40789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this.viewType = viewType; 40799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 40809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 40819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public LayoutParams(ViewGroup.LayoutParams source) { 40829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(source); 40839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 40849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 40859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 40869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 40879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * A RecyclerListener is used to receive a notification whenever a View is placed 40889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * inside the RecycleBin's scrap heap. This listener is used to free resources 40899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * associated to Views placed in the RecycleBin. 40909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 40919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see android.widget.AbsListView.RecycleBin 40929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see android.widget.AbsListView#setRecyclerListener(android.widget.AbsListView.RecyclerListener) 40939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 40949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static interface RecyclerListener { 40959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 40969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates that the specified View was moved into the recycler's scrap heap. 40979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The view is not displayed on screen any more and any expensive resource 40989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * associated with the view should be discarded. 40999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 41009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param view 41019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 41029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void onMovedToScrapHeap(View view); 41039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 41049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 41059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 41069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The RecycleBin facilitates reuse of views across layouts. The RecycleBin has two levels of 41079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * storage: ActiveViews and ScrapViews. ActiveViews are those views which were onscreen at the 41089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * start of a layout. By construction, they are displaying current information. At the end of 41099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * layout, all views in ActiveViews are demoted to ScrapViews. ScrapViews are old views that 41109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * could potentially be used by the adapter to avoid allocating views unnecessarily. 41119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 41129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see android.widget.AbsListView#setRecyclerListener(android.widget.AbsListView.RecyclerListener) 41139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see android.widget.AbsListView.RecyclerListener 41149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 41159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project class RecycleBin { 41169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private RecyclerListener mRecyclerListener; 41179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 41189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 41199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The position of the first view stored in mActiveViews. 41209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 41219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mFirstActivePosition; 41229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 41239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 41249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Views that were on screen at the start of layout. This array is populated at the start of 41259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * layout, and at the end of layout all view in mActiveViews are moved to mScrapViews. 41269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Views in mActiveViews represent a contiguous range of Views, with position of the first 41279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * view store in mFirstActivePosition. 41289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 41299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private View[] mActiveViews = new View[0]; 41309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 41319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 41329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unsorted views that can be used by the adapter as a convert view. 41339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 41349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private ArrayList<View>[] mScrapViews; 41359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 41369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mViewTypeCount; 41379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 41389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private ArrayList<View> mCurrentScrap; 41399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 41409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setViewTypeCount(int viewTypeCount) { 41419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (viewTypeCount < 1) { 41429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("Can't have a viewTypeCount < 1"); 41439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 41449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //noinspection unchecked 41459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ArrayList<View>[] scrapViews = new ArrayList[viewTypeCount]; 41469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < viewTypeCount; i++) { 41479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project scrapViews[i] = new ArrayList<View>(); 41489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 41499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mViewTypeCount = viewTypeCount; 41509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mCurrentScrap = scrapViews[0]; 41519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mScrapViews = scrapViews; 41529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4153f3c2edaa213e6d8c779ab819ff630b4ce389007cAdam Powell 4154f3c2edaa213e6d8c779ab819ff630b4ce389007cAdam Powell public void markChildrenDirty() { 4155f3c2edaa213e6d8c779ab819ff630b4ce389007cAdam Powell if (mViewTypeCount == 1) { 4156f3c2edaa213e6d8c779ab819ff630b4ce389007cAdam Powell final ArrayList<View> scrap = mCurrentScrap; 4157f3c2edaa213e6d8c779ab819ff630b4ce389007cAdam Powell final int scrapCount = scrap.size(); 4158f3c2edaa213e6d8c779ab819ff630b4ce389007cAdam Powell for (int i = 0; i < scrapCount; i++) { 4159f3c2edaa213e6d8c779ab819ff630b4ce389007cAdam Powell scrap.get(i).forceLayout(); 4160f3c2edaa213e6d8c779ab819ff630b4ce389007cAdam Powell } 4161f3c2edaa213e6d8c779ab819ff630b4ce389007cAdam Powell } else { 4162f3c2edaa213e6d8c779ab819ff630b4ce389007cAdam Powell final int typeCount = mViewTypeCount; 4163f3c2edaa213e6d8c779ab819ff630b4ce389007cAdam Powell for (int i = 0; i < typeCount; i++) { 4164f3c2edaa213e6d8c779ab819ff630b4ce389007cAdam Powell final ArrayList<View> scrap = mScrapViews[i]; 4165f3c2edaa213e6d8c779ab819ff630b4ce389007cAdam Powell final int scrapCount = scrap.size(); 4166f3c2edaa213e6d8c779ab819ff630b4ce389007cAdam Powell for (int j = 0; j < scrapCount; j++) { 4167f3c2edaa213e6d8c779ab819ff630b4ce389007cAdam Powell scrap.get(j).forceLayout(); 4168f3c2edaa213e6d8c779ab819ff630b4ce389007cAdam Powell } 4169f3c2edaa213e6d8c779ab819ff630b4ce389007cAdam Powell } 4170f3c2edaa213e6d8c779ab819ff630b4ce389007cAdam Powell } 4171f3c2edaa213e6d8c779ab819ff630b4ce389007cAdam Powell } 41720a63716ed0e44f7cd32b81a444429318d42d8f08Romain Guy 41739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean shouldRecycleViewType(int viewType) { 41749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return viewType >= 0; 41759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 41769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 41779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 41789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Clears the scrap heap. 41799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 41809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void clear() { 41819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mViewTypeCount == 1) { 41829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final ArrayList<View> scrap = mCurrentScrap; 41839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int scrapCount = scrap.size(); 41849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < scrapCount; i++) { 41859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project removeDetachedView(scrap.remove(scrapCount - 1 - i), false); 41869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 41879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 41889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int typeCount = mViewTypeCount; 41899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < typeCount; i++) { 41909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final ArrayList<View> scrap = mScrapViews[i]; 41919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int scrapCount = scrap.size(); 41929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int j = 0; j < scrapCount; j++) { 41939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project removeDetachedView(scrap.remove(scrapCount - 1 - j), false); 41949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 41959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 41969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 41979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 41989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 41999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 42009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Fill ActiveViews with all of the children of the AbsListView. 42019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 42029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childCount The minimum number of views mActiveViews should hold 42039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param firstActivePosition The position of the first view that will be stored in 42049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * mActiveViews 42059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 42069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void fillActiveViews(int childCount, int firstActivePosition) { 42079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mActiveViews.length < childCount) { 42089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mActiveViews = new View[childCount]; 42099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 42109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFirstActivePosition = firstActivePosition; 42119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 42129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View[] activeViews = mActiveViews; 42139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < childCount; i++) { 42149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View child = getChildAt(i); 42159c3184cc162ee8c10eabd3f996629a9397a1f551Romain Guy AbsListView.LayoutParams lp = (AbsListView.LayoutParams) child.getLayoutParams(); 42169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Don't put header or footer views into the scrap heap 42179c3184cc162ee8c10eabd3f996629a9397a1f551Romain Guy if (lp != null && lp.viewType != ITEM_VIEW_TYPE_HEADER_OR_FOOTER) { 42189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Note: We do place AdapterView.ITEM_VIEW_TYPE_IGNORE in active views. 42199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // However, we will NOT place them into scrap views. 42204df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project activeViews[i] = child; 42219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 42229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 42239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 42249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 42259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 42269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Get the view corresponding to the specified position. The view will be removed from 42279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * mActiveViews if it is found. 42289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 42299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position The position to look up in mActiveViews 42309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The view if it is found, null otherwise 42319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 42329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View getActiveView(int position) { 42339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int index = position - mFirstActivePosition; 42349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View[] activeViews = mActiveViews; 42359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (index >=0 && index < activeViews.length) { 42369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View match = activeViews[index]; 42379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project activeViews[index] = null; 42389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return match; 42399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 42409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; 42419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 42429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 42439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 42449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return A view from the ScrapViews collection. These are unordered. 42459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 42469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View getScrapView(int position) { 42479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ArrayList<View> scrapViews; 42489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mViewTypeCount == 1) { 42499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project scrapViews = mCurrentScrap; 42509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int size = scrapViews.size(); 42519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (size > 0) { 42529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return scrapViews.remove(size - 1); 42539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 42549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; 42559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 42569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 42579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int whichScrap = mAdapter.getItemViewType(position); 42589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (whichScrap >= 0 && whichScrap < mScrapViews.length) { 42599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project scrapViews = mScrapViews[whichScrap]; 42609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int size = scrapViews.size(); 42619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (size > 0) { 42629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return scrapViews.remove(size - 1); 42639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 42649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 42659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 42669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; 42679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 42689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 42699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 42709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Put a view into the ScapViews list. These views are unordered. 42719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 42729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param scrap The view to add 42739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 42749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void addScrapView(View scrap) { 42759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project AbsListView.LayoutParams lp = (AbsListView.LayoutParams) scrap.getLayoutParams(); 42769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lp == null) { 42779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 42789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 42799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 42809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Don't put header or footer views or views that should be ignored 42819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // into the scrap heap 42829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int viewType = lp.viewType; 42839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!shouldRecycleViewType(viewType)) { 42849b1bb81fe256e3b342a7375be39da7e752eaf3d4Romain Guy if (viewType != ITEM_VIEW_TYPE_HEADER_OR_FOOTER) { 42859b1bb81fe256e3b342a7375be39da7e752eaf3d4Romain Guy removeDetachedView(scrap, false); 42869b1bb81fe256e3b342a7375be39da7e752eaf3d4Romain Guy } 42879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 42889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 42899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 42909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mViewTypeCount == 1) { 4291a440b002aa59e1455bdfa2c5a1ca51c74bbc19acRomain Guy scrap.dispatchStartTemporaryDetach(); 42929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mCurrentScrap.add(scrap); 42939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 4294a440b002aa59e1455bdfa2c5a1ca51c74bbc19acRomain Guy scrap.dispatchStartTemporaryDetach(); 42959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mScrapViews[viewType].add(scrap); 42969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 42979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 42989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mRecyclerListener != null) { 42999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mRecyclerListener.onMovedToScrapHeap(scrap); 43009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 43019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 43029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 43039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 43049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Move all views remaining in mActiveViews to mScrapViews. 43059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 43069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void scrapActiveViews() { 43079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View[] activeViews = mActiveViews; 43089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean hasListener = mRecyclerListener != null; 43099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean multipleScraps = mViewTypeCount > 1; 43109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 43119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ArrayList<View> scrapViews = mCurrentScrap; 43129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = activeViews.length; 4313a440b002aa59e1455bdfa2c5a1ca51c74bbc19acRomain Guy for (int i = count - 1; i >= 0; i--) { 43149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View victim = activeViews[i]; 43159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (victim != null) { 431621875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy int whichScrap = ((AbsListView.LayoutParams) victim.getLayoutParams()).viewType; 43179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 43189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project activeViews[i] = null; 43199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 43209b1bb81fe256e3b342a7375be39da7e752eaf3d4Romain Guy if (!shouldRecycleViewType(whichScrap)) { 43219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Do not move views that should be ignored 43229b1bb81fe256e3b342a7375be39da7e752eaf3d4Romain Guy if (whichScrap != ITEM_VIEW_TYPE_HEADER_OR_FOOTER) { 43239b1bb81fe256e3b342a7375be39da7e752eaf3d4Romain Guy removeDetachedView(victim, false); 43249b1bb81fe256e3b342a7375be39da7e752eaf3d4Romain Guy } 43259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 43269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 43279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 43289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (multipleScraps) { 43299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project scrapViews = mScrapViews[whichScrap]; 43309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4331a440b002aa59e1455bdfa2c5a1ca51c74bbc19acRomain Guy victim.dispatchStartTemporaryDetach(); 43329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project scrapViews.add(victim); 43339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 43349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (hasListener) { 43359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mRecyclerListener.onMovedToScrapHeap(victim); 43369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 43379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 43389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (ViewDebug.TRACE_RECYCLER) { 43399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ViewDebug.trace(victim, 43409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ViewDebug.RecyclerTraceType.MOVE_FROM_ACTIVE_TO_SCRAP_HEAP, 43419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFirstActivePosition + i, -1); 43429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 43439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 43449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 43459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 43469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project pruneScrapViews(); 43479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 43489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 43499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 43509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Makes sure that the size of mScrapViews does not exceed the size of mActiveViews. 43519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * (This can happen if an adapter does not recycle its views). 43529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 43539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void pruneScrapViews() { 43549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int maxViews = mActiveViews.length; 43559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int viewTypeCount = mViewTypeCount; 43569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final ArrayList<View>[] scrapViews = mScrapViews; 43579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < viewTypeCount; ++i) { 43589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final ArrayList<View> scrapPile = scrapViews[i]; 43599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int size = scrapPile.size(); 43609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int extras = size - maxViews; 43619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project size--; 43629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int j = 0; j < extras; j++) { 43639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project removeDetachedView(scrapPile.remove(size--), false); 43649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 43659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 43669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 43679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 43689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 43699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Puts all views in the scrap heap into the supplied list. 43709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 43719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void reclaimScrapViews(List<View> views) { 43729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mViewTypeCount == 1) { 43739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project views.addAll(mCurrentScrap); 43749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 43759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int viewTypeCount = mViewTypeCount; 43769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final ArrayList<View>[] scrapViews = mScrapViews; 43779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < viewTypeCount; ++i) { 43789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final ArrayList<View> scrapPile = scrapViews[i]; 43799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project views.addAll(scrapPile); 43809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 43819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 43829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 438352e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy 438452e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy /** 438552e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy * Updates the cache color hint of all known views. 438652e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy * 438752e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy * @param color The new cache color hint. 438852e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy */ 438952e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy void setCacheColorHint(int color) { 439052e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy if (mViewTypeCount == 1) { 439152e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy final ArrayList<View> scrap = mCurrentScrap; 439252e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy final int scrapCount = scrap.size(); 439352e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy for (int i = 0; i < scrapCount; i++) { 439452e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy scrap.get(i).setDrawingCacheBackgroundColor(color); 439552e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy } 439652e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy } else { 439752e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy final int typeCount = mViewTypeCount; 439852e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy for (int i = 0; i < typeCount; i++) { 439952e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy final ArrayList<View> scrap = mScrapViews[i]; 440052e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy final int scrapCount = scrap.size(); 440152e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy for (int j = 0; j < scrapCount; j++) { 440252e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy scrap.get(i).setDrawingCacheBackgroundColor(color); 440352e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy } 440452e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy } 440552e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy } 440652e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy // Just in case this is called during a layout pass 440752e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy final View[] activeViews = mActiveViews; 440852e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy final int count = activeViews.length; 440952e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy for (int i = 0; i < count; ++i) { 441052e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy final View victim = activeViews[i]; 441152e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy if (victim != null) { 441252e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy victim.setDrawingCacheBackgroundColor(color); 441352e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy } 441452e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy } 441552e2ef8cac0cd6d78c2c2f5783846e03c636a54cRomain Guy } 44169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 44179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 4418