AdapterView.java revision 75986cf9bc57ef11ad70f36fb77fbbf5d63af6ec
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 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.Context; 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.database.DataSetObserver; 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.Handler; 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.Parcelable; 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.SystemClock; 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.AttributeSet; 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.SparseArray; 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.ContextMenu; 2775986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganovimport android.view.SoundEffectConstants; 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.View; 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.ViewDebug; 3075986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganovimport android.view.ViewGroup; 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.ContextMenu.ContextMenuInfo; 3275986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganovimport android.view.accessibility.AccessibilityEvent; 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * An AdapterView is a view whose children are determined by an {@link Adapter}. 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p> 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See {@link ListView}, {@link GridView}, {@link Spinner} and 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link Gallery} for commonly used subclasses of AdapterView. 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic abstract class AdapterView<T extends Adapter> extends ViewGroup { 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The item view type returned by {@link Adapter#getItemViewType(int)} when 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the adapter does not want the item's view recycled. 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final int ITEM_VIEW_TYPE_IGNORE = -1; 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The item view type returned by {@link Adapter#getItemViewType(int)} when 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the item is a header or footer. 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final int ITEM_VIEW_TYPE_HEADER_OR_FOOTER = -2; 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The position of the first child displayed 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.ExportedProperty 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mFirstPosition = 0; 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The offset in pixels from the top of the AdapterView to the top 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * of the view to select during the next layout. 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mSpecificTop; 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Position from which to start looking for mSyncRowId 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mSyncPosition; 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Row id to look for when data has changed 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project long mSyncRowId = INVALID_ROW_ID; 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Height of the view when mSyncPosition and mSyncRowId where set 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project long mSyncHeight; 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * True if we need to sync to mSyncRowId 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean mNeedSync = false; 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates whether to sync based on the selection or position. Possible 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * values are {@link #SYNC_SELECTED_POSITION} or 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #SYNC_FIRST_POSITION}. 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mSyncMode; 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Our height after the last layout 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mLayoutHeight; 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sync based on the selected child 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static final int SYNC_SELECTED_POSITION = 0; 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sync based on the first child displayed 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static final int SYNC_FIRST_POSITION = 1; 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Maximum amount of time to spend in {@link #findSyncPosition()} 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static final int SYNC_MAX_DURATION_MILLIS = 100; 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates that this view is currently being laid out. 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean mInLayout = false; 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The listener that receives notifications when an item is selected. 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project OnItemSelectedListener mOnItemSelectedListener; 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The listener that receives notifications when an item is clicked. 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project OnItemClickListener mOnItemClickListener; 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The listener that receives notifications when an item is long clicked. 1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project OnItemLongClickListener mOnItemLongClickListener; 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * True if the data has changed since the last layout 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean mDataChanged; 1399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The position within the adapter's data set of the item to select 1429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * during the next layout. 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.ExportedProperty 1459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mNextSelectedPosition = INVALID_POSITION; 1469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The item id of the item to select during the next layout. 1499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project long mNextSelectedRowId = INVALID_ROW_ID; 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The position within the adapter's data set of the currently selected item. 1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.ExportedProperty 1569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mSelectedPosition = INVALID_POSITION; 1579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The item id of the currently selected item. 1609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project long mSelectedRowId = INVALID_ROW_ID; 1629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * View to show if there are no items to show. 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View mEmptyView; 1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The number of items in the current adapter. 1709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.ExportedProperty 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mItemCount; 1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The number of items in the adapter before a data changed event occured. 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mOldItemCount; 1789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Represents an invalid position. All valid positions are in the range 0 to 1 less than the 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * number of items in the current adapter. 1829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final int INVALID_POSITION = -1; 1849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Represents an empty or invalid row id 1879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final long INVALID_ROW_ID = Long.MIN_VALUE; 1899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The last selected position we used when notifying 1929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mOldSelectedPosition = INVALID_POSITION; 1949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The id of the last selected position we used when notifying 1979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project long mOldSelectedRowId = INVALID_ROW_ID; 1999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates what focusable state is requested when calling setFocusable(). 2029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * In addition to this, this view has other criteria for actually 2039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * determining the focusable state (such as whether its empty or the text 2049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * filter is shown). 2059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setFocusable(boolean) 2079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #checkFocus() 2089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mDesiredFocusableState; 2109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mDesiredFocusableInTouchModeState; 2119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private SelectionNotifier mSelectionNotifier; 2139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * When set to true, calls to requestLayout() will not propagate up the parent hierarchy. 2159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This is used to layout the children during a layout pass. 2169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean mBlockLayoutRequests = false; 2189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public AdapterView(Context context) { 2209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(context); 2219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public AdapterView(Context context, AttributeSet attrs) { 2249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(context, attrs); 2259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public AdapterView(Context context, AttributeSet attrs, int defStyle) { 2289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(context, attrs, defStyle); 2299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Interface definition for a callback to be invoked when an item in this 2349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * AdapterView has been clicked. 2359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public interface OnItemClickListener { 2379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Callback method to be invoked when an item in this AdapterView has 2409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * been clicked. 2419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p> 2429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Implementers can call getItemAtPosition(position) if they need 2439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to access the data associated with the selected item. 2449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param parent The AdapterView where the click happened. 2469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param view The view within the AdapterView that was clicked (this 2479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * will be a view provided by the adapter) 2489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position The position of the view in the adapter. 2499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param id The row id of the item that was clicked. 2509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void onItemClick(AdapterView<?> parent, View view, int position, long id); 2529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Register a callback to be invoked when an item in this AdapterView has 2569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * been clicked. 2579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param listener The callback that will be invoked. 2599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setOnItemClickListener(OnItemClickListener listener) { 2619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnItemClickListener = listener; 2629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The callback to be invoked with an item in this AdapterView has 2669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * been clicked, or null id no callback has been set. 2679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final OnItemClickListener getOnItemClickListener() { 2699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mOnItemClickListener; 2709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Call the OnItemClickListener, if it is defined. 2749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param view The view within the AdapterView that was clicked. 2769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position The position of the view in the adapter. 2779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param id The row id of the item that was clicked. 2789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True if there was an assigned OnItemClickListener that was 2799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * called, false otherwise is returned. 2809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean performItemClick(View view, int position, long id) { 2829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnItemClickListener != null) { 2839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project playSoundEffect(SoundEffectConstants.CLICK); 2849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnItemClickListener.onItemClick(this, view, position, id); 2859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 2869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 2899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Interface definition for a callback to be invoked when an item in this 2939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * view has been clicked and held. 2949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public interface OnItemLongClickListener { 2969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Callback method to be invoked when an item in this view has been 2989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * clicked and held. 2999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Implementers can call getItemAtPosition(position) if they need to access 3019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the data associated with the selected item. 3029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param parent The AbsListView where the click happened 3049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param view The view within the AbsListView that was clicked 3059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position The position of the view in the list 3069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param id The row id of the item that was clicked 3079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return true if the callback consumed the long click, false otherwise 3099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id); 3119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Register a callback to be invoked when an item in this AdapterView has 3169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * been clicked and held 3179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param listener The callback that will run 3199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setOnItemLongClickListener(OnItemLongClickListener listener) { 3219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!isLongClickable()) { 3229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setLongClickable(true); 3239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnItemLongClickListener = listener; 3259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The callback to be invoked with an item in this AdapterView has 3299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * been clicked and held, or null id no callback as been set. 3309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final OnItemLongClickListener getOnItemLongClickListener() { 3329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mOnItemLongClickListener; 3339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Interface definition for a callback to be invoked when 3379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * an item in this view has been selected. 3389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public interface OnItemSelectedListener { 3409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Callback method to be invoked when an item in this view has been 3429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * selected. 3439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Impelmenters can call getItemAtPosition(position) if they need to access the 3459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * data associated with the selected item. 3469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param parent The AdapterView where the selection happened 3489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param view The view within the AdapterView that was clicked 3499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position The position of the view in the adapter 3509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param id The row id of the item that is selected 3519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void onItemSelected(AdapterView<?> parent, View view, int position, long id); 3539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Callback method to be invoked when the selection disappears from this 3569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * view. The selection can disappear for instance when touch is activated 3579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * or when the adapter becomes empty. 3589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param parent The AdapterView that now contains no selected item. 3609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void onNothingSelected(AdapterView<?> parent); 3629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Register a callback to be invoked when an item in this AdapterView has 3679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * been selected. 3689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param listener The callback that will run 3709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setOnItemSelectedListener(OnItemSelectedListener listener) { 3729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnItemSelectedListener = listener; 3739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final OnItemSelectedListener getOnItemSelectedListener() { 3769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mOnItemSelectedListener; 3779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Extra menu information provided to the 3819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.view.View.OnCreateContextMenuListener#onCreateContextMenu(ContextMenu, View, ContextMenuInfo) } 3829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * callback when a context menu is brought up for this AdapterView. 3839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static class AdapterContextMenuInfo implements ContextMenu.ContextMenuInfo { 3869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public AdapterContextMenuInfo(View targetView, int position, long id) { 3889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this.targetView = targetView; 3899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this.position = position; 3909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this.id = id; 3919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The child view for which the context menu is being displayed. This 3959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * will be one of the children of this AdapterView. 3969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public View targetView; 3989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The position in the adapter for which the context menu is being 4019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * displayed. 4029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int position; 4049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The row id of the item for which the context menu is being displayed. 4079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public long id; 4099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the adapter currently associated with this widget. 4139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The adapter used to provide this view's content. 4159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public abstract T getAdapter(); 4179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sets the adapter that provides the data and the views to represent the data 4209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * in this widget. 4219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param adapter The adapter to use to create this view's content. 4239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public abstract void setAdapter(T adapter); 4259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This method is not supported and throws an UnsupportedOperationException when called. 4289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child Ignored. 4309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws UnsupportedOperationException Every time this method is invoked. 4329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 4349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void addView(View child) { 4359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new UnsupportedOperationException("addView(View) is not supported in AdapterView"); 4369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This method is not supported and throws an UnsupportedOperationException when called. 4409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child Ignored. 4429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param index Ignored. 4439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws UnsupportedOperationException Every time this method is invoked. 4459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 4479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void addView(View child, int index) { 4489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new UnsupportedOperationException("addView(View, int) is not supported in AdapterView"); 4499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This method is not supported and throws an UnsupportedOperationException when called. 4539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child Ignored. 4559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param params Ignored. 4569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws UnsupportedOperationException Every time this method is invoked. 4589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 4609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void addView(View child, LayoutParams params) { 4619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new UnsupportedOperationException("addView(View, LayoutParams) " 4629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "is not supported in AdapterView"); 4639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This method is not supported and throws an UnsupportedOperationException when called. 4679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child Ignored. 4699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param index Ignored. 4709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param params Ignored. 4719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws UnsupportedOperationException Every time this method is invoked. 4739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 4759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void addView(View child, int index, LayoutParams params) { 4769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new UnsupportedOperationException("addView(View, int, LayoutParams) " 4779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "is not supported in AdapterView"); 4789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This method is not supported and throws an UnsupportedOperationException when called. 4829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child Ignored. 4849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws UnsupportedOperationException Every time this method is invoked. 4869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 4889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void removeView(View child) { 4899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new UnsupportedOperationException("removeView(View) is not supported in AdapterView"); 4909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This method is not supported and throws an UnsupportedOperationException when called. 4949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param index Ignored. 4969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws UnsupportedOperationException Every time this method is invoked. 4989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 5009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void removeViewAt(int index) { 5019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new UnsupportedOperationException("removeViewAt(int) is not supported in AdapterView"); 5029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This method is not supported and throws an UnsupportedOperationException when called. 5069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws UnsupportedOperationException Every time this method is invoked. 5089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 5109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void removeAllViews() { 5119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new UnsupportedOperationException("removeAllViews() is not supported in AdapterView"); 5129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 5159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 5169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutHeight = getHeight(); 5179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Return the position of the currently selected item within the adapter's data set 5219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return int Position (starting at 0), or {@link #INVALID_POSITION} if there is nothing selected. 5239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.CapturedViewProperty 5259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getSelectedItemPosition() { 5269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mNextSelectedPosition; 5279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The id corresponding to the currently selected item, or {@link #INVALID_ROW_ID} 5319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * if nothing is selected. 5329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.CapturedViewProperty 5349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public long getSelectedItemId() { 5359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mNextSelectedRowId; 5369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The view corresponding to the currently selected item, or null 5409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * if nothing is selected 5419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public abstract View getSelectedView(); 5439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The data corresponding to the currently selected item, or 5469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * null if there is nothing selected. 5479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Object getSelectedItem() { 5499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project T adapter = getAdapter(); 5509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int selection = getSelectedItemPosition(); 5519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (adapter != null && adapter.getCount() > 0 && selection >= 0) { 5529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return adapter.getItem(selection); 5539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 5549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; 5559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The number of items owned by the Adapter associated with this 5609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * AdapterView. (This is the number of data items, which may be 5619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * larger than the number of visible view.) 5629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @ViewDebug.CapturedViewProperty 5649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getCount() { 5659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mItemCount; 5669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Get the position within the adapter's data set for the view, where view is a an adapter item 5709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * or a descendant of an adapter item. 5719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param view an adapter item, or a descendant of an adapter item. This must be visible in this 5739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * AdapterView at the time of the call. 5749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the position within the adapter's data set of the view, or {@link #INVALID_POSITION} 5759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * if the view does not correspond to a list item (or it is not currently visible). 5769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getPositionForView(View view) { 5789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View listItem = view; 5799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 5809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View v; 5819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while (!(v = (View) listItem.getParent()).equals(this)) { 5829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project listItem = v; 5839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (ClassCastException e) { 5859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // We made it up to the window without find this list view 5869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return INVALID_POSITION; 5879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Search the children for the list item 5909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childCount = getChildCount(); 5919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < childCount; i++) { 5929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (getChildAt(i).equals(listItem)) { 5939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mFirstPosition + i; 5949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Child not found! 5989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return INVALID_POSITION; 5999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the position within the adapter's data set for the first item 6039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * displayed on screen. 6049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The position within the adapter's data set 6069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getFirstVisiblePosition() { 6089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mFirstPosition; 6099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the position within the adapter's data set for the last item 6139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * displayed on screen. 6149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The position within the adapter's data set 6169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLastVisiblePosition() { 6189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mFirstPosition + getChildCount() - 1; 6199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 62275986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov * Sets the currently selected item. To support accessibility subclasses that 62375986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov * override this method must invoke the overriden super method first. 62475986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov * 6259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position Index (starting at 0) of the data item to be selected. 6269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public abstract void setSelection(int position); 6289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sets the view to show if the adapter is empty 6319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setEmptyView(View emptyView) { 6339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mEmptyView = emptyView; 6349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final T adapter = getAdapter(); 6369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean empty = ((adapter == null) || adapter.isEmpty()); 6379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project updateEmptyStatus(empty); 6389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * When the current adapter is empty, the AdapterView can display a special view 6429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * call the empty view. The empty view is used to provide feedback to the user 6439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * that no data is available in this AdapterView. 6449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The view to show if the adapter is empty. 6469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public View getEmptyView() { 6489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mEmptyView; 6499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates whether this view is in filter mode. Filter mode can for instance 6539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * be enabled by a user when typing on the keyboard. 6549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True if the view is in filter mode, false otherwise. 6569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean isInFilterMode() { 6589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 6599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 6629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setFocusable(boolean focusable) { 6639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final T adapter = getAdapter(); 6649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean empty = adapter == null || adapter.getCount() == 0; 6659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDesiredFocusableState = focusable; 6679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!focusable) { 6689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDesiredFocusableInTouchModeState = false; 6699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.setFocusable(focusable && (!empty || isInFilterMode())); 6729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 6759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setFocusableInTouchMode(boolean focusable) { 6769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final T adapter = getAdapter(); 6779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean empty = adapter == null || adapter.getCount() == 0; 6789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDesiredFocusableInTouchModeState = focusable; 6809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (focusable) { 6819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDesiredFocusableState = true; 6829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.setFocusableInTouchMode(focusable && (!empty || isInFilterMode())); 6859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void checkFocus() { 6889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final T adapter = getAdapter(); 6899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean empty = adapter == null || adapter.getCount() == 0; 6909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean focusable = !empty || isInFilterMode(); 6919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // The order in which we set focusable in touch mode/focusable may matter 6929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // for the client, see View.setFocusableInTouchMode() comments for more 6939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // details 6949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.setFocusableInTouchMode(focusable && mDesiredFocusableInTouchModeState); 6959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.setFocusable(focusable && mDesiredFocusableState); 6969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mEmptyView != null) { 6979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project updateEmptyStatus((adapter == null) || adapter.isEmpty()); 6989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Update the status of the list based on the empty parameter. If empty is true and 7039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * we have an empty view, display it. In all the other cases, make sure that the listview 7049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * is VISIBLE and that the empty view is GONE (if it's not null). 7059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void updateEmptyStatus(boolean empty) { 7079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (isInFilterMode()) { 7089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project empty = false; 7099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (empty) { 7129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mEmptyView != null) { 7139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mEmptyView.setVisibility(View.VISIBLE); 7149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setVisibility(View.GONE); 7159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 7169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If the caller just removed our empty view, make sure the list view is visible 7179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setVisibility(View.VISIBLE); 7189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // We are now GONE, so pending layouts will not be dispatched. 7219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Force one here to make sure that the state of the list matches 7229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the state of the adapter. 7239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mDataChanged) { 7249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this.onLayout(false, mLeft, mTop, mRight, mBottom); 7259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 7279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mEmptyView != null) mEmptyView.setVisibility(View.GONE); 7289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setVisibility(View.VISIBLE); 7299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Gets the data associated with the specified position in the list. 7349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position Which data to get 7369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The data associated with the specified position in the list 7379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Object getItemAtPosition(int position) { 7399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project T adapter = getAdapter(); 7409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (adapter == null || position < 0) ? null : adapter.getItem(position); 7419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public long getItemIdAtPosition(int position) { 7449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project T adapter = getAdapter(); 7459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (adapter == null || position < 0) ? INVALID_ROW_ID : adapter.getItemId(position); 7469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 7499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setOnClickListener(OnClickListener l) { 7509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("Don't call setOnClickListener for an AdapterView. " 7519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "You probably want setOnItemClickListener instead"); 7529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Override to prevent freezing of any views created by the adapter. 7569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 7589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void dispatchSaveInstanceState(SparseArray<Parcelable> container) { 7599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dispatchFreezeSelfOnly(container); 7609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Override to prevent thawing of any views created by the adapter. 7649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 7669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void dispatchRestoreInstanceState(SparseArray<Parcelable> container) { 7679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dispatchThawSelfOnly(container); 7689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project class AdapterDataSetObserver extends DataSetObserver { 7719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private Parcelable mInstanceState = null; 7739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 7759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onChanged() { 7769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDataChanged = true; 7779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOldItemCount = mItemCount; 7789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mItemCount = getAdapter().getCount(); 7799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Detect the case where a cursor that was previously invalidated has 7819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // been repopulated with new data. 7829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (AdapterView.this.getAdapter().hasStableIds() && mInstanceState != null 7839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project && mOldItemCount == 0 && mItemCount > 0) { 7849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project AdapterView.this.onRestoreInstanceState(mInstanceState); 7859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInstanceState = null; 7869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 7879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project rememberSyncState(); 7889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkFocus(); 7909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 7919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 7949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onInvalidated() { 7959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDataChanged = true; 7969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (AdapterView.this.getAdapter().hasStableIds()) { 7989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remember the current state for the case where our hosting activity is being 7999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // stopped and later restarted 8009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInstanceState = AdapterView.this.onSaveInstanceState(); 8019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Data is invalid so we should reset our state 8049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOldItemCount = mItemCount; 8059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mItemCount = 0; 8069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectedPosition = INVALID_POSITION; 8079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectedRowId = INVALID_ROW_ID; 8089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNextSelectedPosition = INVALID_POSITION; 8099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNextSelectedRowId = INVALID_ROW_ID; 8109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNeedSync = false; 8119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkSelectionChanged(); 8129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkFocus(); 8149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 8159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void clearSavedState() { 8189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInstanceState = null; 8199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private class SelectionNotifier extends Handler implements Runnable { 8239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void run() { 8249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mDataChanged) { 8259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Data has changed between when this SelectionNotifier 8269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // was posted and now. We need to wait until the AdapterView 8279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // has been synched to the new data. 8289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project post(this); 8299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 8309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fireOnSelected(); 8319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void selectionChanged() { 8369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnItemSelectedListener != null) { 8379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mInLayout || mBlockLayoutRequests) { 8389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If we are in a layout traversal, defer notification 8399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // by posting. This ensures that the view tree is 8409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // in a consistent state and is able to accomodate 8419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // new layout or invalidate requests. 8429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mSelectionNotifier == null) { 8439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectionNotifier = new SelectionNotifier(); 8449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectionNotifier.post(mSelectionNotifier); 8469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 8479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fireOnSelected(); 8489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 85075986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov 85175986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov // we fire selection events here not in View 85275986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov if (mSelectedPosition != ListView.INVALID_POSITION && isShown() && !isInTouchMode()) { 85375986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_SELECTED); 85475986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov } 8559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void fireOnSelected() { 8589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnItemSelectedListener == null) 8599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 8609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int selection = this.getSelectedItemPosition(); 8629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (selection >= 0) { 8639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View v = getSelectedView(); 8649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnItemSelectedListener.onItemSelected(this, v, selection, 8659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project getAdapter().getItemId(selection)); 8669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 8679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnItemSelectedListener.onNothingSelected(this); 8689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 87275986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { 87375986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov boolean populated = false; 87475986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov // This is an exceptional case which occurs when a window gets the 87575986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov // focus and sends a focus event via its focused child to announce 87675986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov // current focus/selection. AdapterView fires selection but not focus 87775986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov // events so we change the event type here. 87875986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov if (event.getEventType() == AccessibilityEvent.TYPE_VIEW_FOCUSED) { 87975986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov event.setEventType(AccessibilityEvent.TYPE_VIEW_SELECTED); 88075986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov } 88175986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov 88275986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov // we send selection events only from AdapterView to avoid 88375986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov // generation of such event for each child 88475986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov View selectedView = getSelectedView(); 88575986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov if (selectedView != null) { 88675986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov populated = selectedView.dispatchPopulateAccessibilityEvent(event); 88775986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov } 88875986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov 88975986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov if (!populated) { 89075986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov if (selectedView != null) { 89175986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov event.setEnabled(selectedView.isEnabled()); 89275986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov } 89375986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov event.setItemCount(getCount()); 89475986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov event.setCurrentItemIndex(getSelectedItemPosition()); 89575986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov } 89675986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov 89775986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov return populated; 89875986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov } 89975986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov 90075986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov @Override 9019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected boolean canAnimate() { 9029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return super.canAnimate() && mItemCount > 0; 9039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void handleDataChanged() { 9069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = mItemCount; 9079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean found = false; 9089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (count > 0) { 9109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int newPos; 9129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Find the row we are supposed to sync to 9149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mNeedSync) { 9159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Update this first, since setNextSelectedPositionInt inspects 9169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // it 9179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNeedSync = false; 9189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // See if we can find a position in the new data with the same 9209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // id as the old selection 9219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project newPos = findSyncPosition(); 9229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (newPos >= 0) { 9239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Verify that new selection is selectable 9249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int selectablePos = lookForSelectablePosition(newPos, true); 9259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (selectablePos == newPos) { 9269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Same row id is selected 9279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setNextSelectedPositionInt(newPos); 9289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project found = true; 9299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!found) { 9339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Try to use the same position if we can't find matching data 9349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project newPos = getSelectedItemPosition(); 9359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Pin position to the available range 9379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (newPos >= count) { 9389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project newPos = count - 1; 9399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (newPos < 0) { 9419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project newPos = 0; 9429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Make sure we select something selectable -- first look down 9459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int selectablePos = lookForSelectablePosition(newPos, true); 9469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (selectablePos < 0) { 9479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Looking down didn't work -- try looking up 9489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectablePos = lookForSelectablePosition(newPos, false); 9499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (selectablePos >= 0) { 9519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setNextSelectedPositionInt(selectablePos); 9529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkSelectionChanged(); 9539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project found = true; 9549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!found) { 9589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Nothing is selected 9599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectedPosition = INVALID_POSITION; 9609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectedRowId = INVALID_ROW_ID; 9619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNextSelectedPosition = INVALID_POSITION; 9629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNextSelectedRowId = INVALID_ROW_ID; 9639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNeedSync = false; 9649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkSelectionChanged(); 9659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void checkSelectionChanged() { 9699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((mSelectedPosition != mOldSelectedPosition) || (mSelectedRowId != mOldSelectedRowId)) { 9709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectionChanged(); 9719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOldSelectedPosition = mSelectedPosition; 9729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOldSelectedRowId = mSelectedRowId; 9739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 9779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Searches the adapter for a position matching mSyncRowId. The search starts at mSyncPosition 9789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and then alternates between moving up and moving down until 1) we find the right position, or 9799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2) we run out of time, or 3) we have looked at every position 9809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 9819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Position of the row that matches mSyncRowId, or {@link #INVALID_POSITION} if it can't 9829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * be found 9839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int findSyncPosition() { 9859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int count = mItemCount; 9869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (count == 0) { 9889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return INVALID_POSITION; 9899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project long idToMatch = mSyncRowId; 9929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int seed = mSyncPosition; 9939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If there isn't a selection don't hunt for it 9959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (idToMatch == INVALID_ROW_ID) { 9969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return INVALID_POSITION; 9979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Pin seed to reasonable values 10009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project seed = Math.max(0, seed); 10019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project seed = Math.min(count - 1, seed); 10029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project long endTime = SystemClock.uptimeMillis() + SYNC_MAX_DURATION_MILLIS; 10049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project long rowId; 10069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // first position scanned so far 10089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int first = seed; 10099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // last position scanned so far 10119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int last = seed; 10129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // True if we should move down on the next iteration 10149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean next = false; 10159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // True when we have looked at the first item in the data 10179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean hitFirst; 10189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // True when we have looked at the last item in the data 10209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean hitLast; 10219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Get the item ID locally (instead of getItemIdAtPosition), so 10239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // we need the adapter 10249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project T adapter = getAdapter(); 10259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (adapter == null) { 10269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return INVALID_POSITION; 10279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while (SystemClock.uptimeMillis() <= endTime) { 10309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project rowId = adapter.getItemId(seed); 10319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (rowId == idToMatch) { 10329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Found it! 10339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return seed; 10349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project hitLast = last == count - 1; 10379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project hitFirst = first == 0; 10389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (hitLast && hitFirst) { 10409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Looked at everything 10419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 10429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (hitFirst || (next && !hitLast)) { 10459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Either we hit the top, or we are trying to move down 10469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project last++; 10479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project seed = last; 10489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Try going up next time 10499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project next = false; 10509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (hitLast || (!next && !hitFirst)) { 10519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Either we hit the bottom, or we are trying to move up 10529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project first--; 10539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project seed = first; 10549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Try going down next time 10559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project next = true; 10569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return INVALID_POSITION; 10619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 10649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Find a position that can be selected (i.e., is not a separator). 10659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 10669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position The starting position to look at. 10679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param lookDown Whether to look down for other positions. 10689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The next selectable position starting at position and then searching either up or 10699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * down. Returns {@link #INVALID_POSITION} if nothing can be found. 10709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 10719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int lookForSelectablePosition(int position, boolean lookDown) { 10729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return position; 10739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 10769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Utility to keep mSelectedPosition and mSelectedRowId in sync 10779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position Our current position 10789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 10799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void setSelectedPositionInt(int position) { 10809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectedPosition = position; 10819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectedRowId = getItemIdAtPosition(position); 10829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 10859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Utility to keep mNextSelectedPosition and mNextSelectedRowId in sync 10869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position Intended value for mSelectedPosition the next time we go 10879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * through layout 10889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 10899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void setNextSelectedPositionInt(int position) { 10909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNextSelectedPosition = position; 10919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNextSelectedRowId = getItemIdAtPosition(position); 10929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If we are trying to sync to the selection, update that too 10939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mNeedSync && mSyncMode == SYNC_SELECTED_POSITION && position >= 0) { 10949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSyncPosition = position; 10959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSyncRowId = mNextSelectedRowId; 10969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 11009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Remember enough information to restore the screen state when the data has 11019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * changed. 11029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 11039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 11049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void rememberSyncState() { 11059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (getChildCount() > 0) { 11069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNeedSync = true; 11079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSyncHeight = mLayoutHeight; 11089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mSelectedPosition >= 0) { 11099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Sync the selection state 11109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View v = getChildAt(mSelectedPosition - mFirstPosition); 11119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSyncRowId = mNextSelectedRowId; 11129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSyncPosition = mNextSelectedPosition; 11139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (v != null) { 11149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSpecificTop = v.getTop(); 11159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSyncMode = SYNC_SELECTED_POSITION; 11179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 11189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Sync the based on the offset of the first view 11199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View v = getChildAt(0); 11209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project T adapter = getAdapter(); 11219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mFirstPosition >= 0 && mFirstPosition < adapter.getCount()) { 11229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSyncRowId = adapter.getItemId(mFirstPosition); 11239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 11249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSyncRowId = NO_ID; 11259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSyncPosition = mFirstPosition; 11279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (v != null) { 11289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSpecificTop = v.getTop(); 11299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSyncMode = SYNC_FIRST_POSITION; 11319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 1135