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 19fd3ddfa6f0559eb29eea179690144a7357c34b3dGilles Debunneimport com.android.internal.R; 20fd3ddfa6f0559eb29eea179690144a7357c34b3dGilles Debunneimport com.google.android.collect.Lists; 21fd3ddfa6f0559eb29eea179690144a7357c34b3dGilles Debunne 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.Context; 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.res.TypedArray; 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.graphics.Canvas; 258f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guyimport android.graphics.Paint; 26fd3ddfa6f0559eb29eea179690144a7357c34b3dGilles Debunneimport android.graphics.PixelFormat; 27fd3ddfa6f0559eb29eea179690144a7357c34b3dGilles Debunneimport android.graphics.Rect; 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.graphics.drawable.ColorDrawable; 29fd3ddfa6f0559eb29eea179690144a7357c34b3dGilles Debunneimport android.graphics.drawable.Drawable; 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.Parcel; 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.Parcelable; 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.AttributeSet; 338f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powellimport android.util.LongSparseArray; 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.SparseBooleanArray; 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.FocusFinder; 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.KeyEvent; 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.MotionEvent; 38fd3ddfa6f0559eb29eea179690144a7357c34b3dGilles Debunneimport android.view.SoundEffectConstants; 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.View; 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.ViewDebug; 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.ViewGroup; 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.ViewParent; 4375986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganovimport android.view.accessibility.AccessibilityEvent; 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.util.ArrayList; 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Implementation Notes: 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Some terminology: 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * index - index of the items that are currently visible 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * position - index of the items in the cursor 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * A view that shows items in a vertically scrolling list. The items 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * come from the {@link ListAdapter} associated with this view. 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#ListView_entries 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#ListView_divider 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#ListView_dividerHeight 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#ListView_choiceMode 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#ListView_headerDividersEnabled 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#ListView_footerDividersEnabled 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic class ListView extends AbsListView { 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Used to indicate a no preference for a position type. 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static final int NO_POSITION = -1; 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Normal list that does not indicate choices 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final int CHOICE_MODE_NONE = 0; 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The list allows up to one choice 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final int CHOICE_MODE_SINGLE = 1; 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The list allows multiple choices 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final int CHOICE_MODE_MULTIPLE = 2; 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * When arrow scrolling, ListView will never scroll more than this factor 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * times the height of the list. 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final float MAX_SCROLL_FACTOR = 0.33f; 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * When arrow scrolling, need a certain amount of pixels to preview next 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * items. This is usually the fading edge, but if that is small enough, 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * we want to make sure we preview at least this many pixels. 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int MIN_SCROLL_PREVIEW_PIXELS = 2; 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * A class that represents a fixed view in a list, for example a header at the top 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * or a footer at the bottom. 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public class FixedViewInfo { 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** The view to add to the list */ 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public View view; 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** The data backing the view. This is returned from {@link ListAdapter#getItem(int)}. */ 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Object data; 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** <code>true</code> if the fixed view should be selectable in the list */ 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean isSelectable; 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private ArrayList<FixedViewInfo> mHeaderViewInfos = Lists.newArrayList(); 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private ArrayList<FixedViewInfo> mFooterViewInfos = Lists.newArrayList(); 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Drawable mDivider; 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mDividerHeight; 120bfb5d4b93bb739a012ecec604473838c1343c88aAdam Powell 12124443ea3992e372e47daa50266b0f2ec38cac388Romain Guy private boolean mIsCacheColorOpaque; 12224443ea3992e372e47daa50266b0f2ec38cac388Romain Guy private boolean mDividerIsOpaque; 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mClipDivider; 12424443ea3992e372e47daa50266b0f2ec38cac388Romain Guy 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mHeaderDividersEnabled; 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mFooterDividersEnabled; 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mAreAllItemsSelectable = true; 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mItemsCanFocus = false; 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mChoiceMode = CHOICE_MODE_NONE; 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private SparseBooleanArray mCheckStates; 1358f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell private LongSparseArray<Boolean> mCheckedIdStates; 1369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // used for temporary calculations. 138c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project private final Rect mTempRect = new Rect(); 139a02903fbee6725563da4472bd120f844e9d5518cRomain Guy private Paint mDividerPaint; 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the single allocated result per list view; kinda cheesey but avoids 1429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // allocating these thingies too often. 1439c3184cc162ee8c10eabd3f996629a9397a1f551Romain Guy private final ArrowScrollFocusResult mArrowScrollFocusResult = new ArrowScrollFocusResult(); 1449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1459bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell // Keeps focused children visible through resizes 1469bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell private FocusSelector mFocusSelector; 1479bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell 1489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public ListView(Context context) { 1499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this(context, null); 1509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public ListView(Context context, AttributeSet attrs) { 1539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this(context, attrs, com.android.internal.R.attr.listViewStyle); 1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public ListView(Context context, AttributeSet attrs, int defStyle) { 1579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(context, attrs, defStyle); 1589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TypedArray a = context.obtainStyledAttributes(attrs, 1609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project com.android.internal.R.styleable.ListView, defStyle, 0); 1619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project CharSequence[] entries = a.getTextArray( 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project com.android.internal.R.styleable.ListView_entries); 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (entries != null) { 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setAdapter(new ArrayAdapter<CharSequence>(context, 1669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project com.android.internal.R.layout.simple_list_item_1, entries)); 1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final Drawable d = a.getDrawable(com.android.internal.R.styleable.ListView_divider); 1709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (d != null) { 1719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If a divider is specified use its intrinsic height for divider height 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setDivider(d); 1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 174bfb5d4b93bb739a012ecec604473838c1343c88aAdam Powell 1759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Use the height specified, zero being the default 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int dividerHeight = a.getDimensionPixelSize( 1779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project com.android.internal.R.styleable.ListView_dividerHeight, 0); 1789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (dividerHeight != 0) { 1799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setDividerHeight(dividerHeight); 1809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 182536fb04c1c419d5dd3816112ab5af7baee7cd549Romain Guy setChoiceMode(a.getInt(R.styleable.ListView_choiceMode, CHOICE_MODE_NONE)); 183536fb04c1c419d5dd3816112ab5af7baee7cd549Romain Guy 1849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mHeaderDividersEnabled = a.getBoolean(R.styleable.ListView_headerDividersEnabled, true); 1859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFooterDividersEnabled = a.getBoolean(R.styleable.ListView_footerDividersEnabled, true); 1869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project a.recycle(); 1889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The maximum amount a list view will scroll in response to 1929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * an arrow event. 1939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getMaxScrollAmount() { 1959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (int) (MAX_SCROLL_FACTOR * (mBottom - mTop)); 1969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Make sure views are touching the top or bottom edge, as appropriate for 2009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * our gravity 2019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void adjustViewsUpOrDown() { 2039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childCount = getChildCount(); 2049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int delta; 2059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childCount > 0) { 2079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View child; 2089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mStackFromBottom) { 2109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Uh-oh -- we came up short. Slide all views up to make them 2119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // align with the top 2129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child = getChildAt(0); 2139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project delta = child.getTop() - mListPadding.top; 2149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mFirstPosition != 0) { 2159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // It's OK to have some space above the first item if it is 2169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // part of the vertical spacing 2179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project delta -= mDividerHeight; 2189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (delta < 0) { 2209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // We only are looking to see if we are too low, not too high 2219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project delta = 0; 2229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 2249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // we are too high, slide all views down to align with bottom 2259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child = getChildAt(childCount - 1); 2269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project delta = child.getBottom() - (getHeight() - mListPadding.bottom); 2279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mFirstPosition + childCount < mItemCount) { 2299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // It's OK to have some space below the last item if it is 2309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // part of the vertical spacing 2319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project delta += mDividerHeight; 2329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (delta > 0) { 2359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project delta = 0; 2369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (delta != 0) { 2409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project offsetChildrenTopAndBottom(-delta); 2419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Add a fixed view to appear at the top of the list. If addHeaderView is 2479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * called more than once, the views will appear in the order they were 2489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * added. Views added using this call can take focus if they want. 2499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p> 2509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * NOTE: Call this before calling setAdapter. This is so ListView can wrap 251176f9fc215194411cf0461a178d77fa57486112bGilles Debunne * the supplied cursor with one that will also account for header and footer 2529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * views. 2539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param v The view to add. 2559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param data Data to associate with this view 2569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param isSelectable whether the item is selectable 2579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void addHeaderView(View v, Object data, boolean isSelectable) { 2599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mAdapter != null) { 2619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalStateException( 2629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project "Cannot add header view to list -- setAdapter has already been called."); 2639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project FixedViewInfo info = new FixedViewInfo(); 2669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project info.view = v; 2679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project info.data = data; 2689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project info.isSelectable = isSelectable; 2699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mHeaderViewInfos.add(info); 2709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Add a fixed view to appear at the top of the list. If addHeaderView is 2749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * called more than once, the views will appear in the order they were 2759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * added. Views added using this call can take focus if they want. 2769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p> 2779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * NOTE: Call this before calling setAdapter. This is so ListView can wrap 278176f9fc215194411cf0461a178d77fa57486112bGilles Debunne * the supplied cursor with one that will also account for header and footer 2799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * views. 2809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param v The view to add. 2829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void addHeaderView(View v) { 2849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project addHeaderView(v, null, true); 2859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 2889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getHeaderViewsCount() { 2899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mHeaderViewInfos.size(); 2909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Removes a previously-added header view. 2949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param v The view to remove 2969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return true if the view was removed, false if the view was not a header 2979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * view 2989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean removeHeaderView(View v) { 3009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mHeaderViewInfos.size() > 0) { 3019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean result = false; 3029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (((HeaderViewListAdapter) mAdapter).removeHeader(v)) { 3039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDataSetObserver.onChanged(); 3049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project result = true; 3059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project removeFixedViewInfo(v, mHeaderViewInfos); 3079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return result; 3089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 3109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void removeFixedViewInfo(View v, ArrayList<FixedViewInfo> where) { 3139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int len = where.size(); 3149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < len; ++i) { 3159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project FixedViewInfo info = where.get(i); 3169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (info.view == v) { 3179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project where.remove(i); 3189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 3199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Add a fixed view to appear at the bottom of the list. If addFooterView is 3259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * called more than once, the views will appear in the order they were 3269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * added. Views added using this call can take focus if they want. 3279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p> 3289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * NOTE: Call this before calling setAdapter. This is so ListView can wrap 329176f9fc215194411cf0461a178d77fa57486112bGilles Debunne * the supplied cursor with one that will also account for header and footer 3309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * views. 3319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param v The view to add. 3339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param data Data to associate with this view 3349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param isSelectable true if the footer view can be selected 3359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void addFooterView(View v, Object data, boolean isSelectable) { 3379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project FixedViewInfo info = new FixedViewInfo(); 3389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project info.view = v; 3399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project info.data = data; 3409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project info.isSelectable = isSelectable; 3419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFooterViewInfos.add(info); 3429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // in the case of re-adding a footer view, or adding one later on, 3449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // we need to notify the observer 3459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mDataSetObserver != null) { 3469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDataSetObserver.onChanged(); 3479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Add a fixed view to appear at the bottom of the list. If addFooterView is called more 3529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * than once, the views will appear in the order they were added. Views added using 3539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * this call can take focus if they want. 3549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p>NOTE: Call this before calling setAdapter. This is so ListView can wrap the supplied 355176f9fc215194411cf0461a178d77fa57486112bGilles Debunne * cursor with one that will also account for header and footer views. 3569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param v The view to add. 3599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void addFooterView(View v) { 3619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project addFooterView(v, null, true); 3629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 3659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getFooterViewsCount() { 3669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mFooterViewInfos.size(); 3679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Removes a previously-added footer view. 3719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param v The view to remove 3739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return 3749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * true if the view was removed, false if the view was not a footer view 3759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean removeFooterView(View v) { 3779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mFooterViewInfos.size() > 0) { 3789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean result = false; 3799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (((HeaderViewListAdapter) mAdapter).removeFooter(v)) { 3809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDataSetObserver.onChanged(); 3819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project result = true; 3829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project removeFixedViewInfo(v, mFooterViewInfos); 3849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return result; 3859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 3879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the adapter currently in use in this ListView. The returned adapter 3919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * might not be the same adapter passed to {@link #setAdapter(ListAdapter)} but 3929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * might be a {@link WrapperListAdapter}. 3939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The adapter currently used to display data in this ListView. 3959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setAdapter(ListAdapter) 3979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 3999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public ListAdapter getAdapter() { 4009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mAdapter; 4019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sets the data behind this ListView. 4059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The adapter passed to this method may be wrapped by a {@link WrapperListAdapter}, 4079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * depending on the ListView features currently in use. For instance, adding 4089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * headers and/or footers will cause the adapter to be wrapped. 4099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param adapter The ListAdapter which is responsible for maintaining the 4119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * data backing this list and for producing a view to represent an 4129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * item in that data set. 4139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getAdapter() 4159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 4179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setAdapter(ListAdapter adapter) { 4189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (null != mAdapter) { 4199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mAdapter.unregisterDataSetObserver(mDataSetObserver); 4209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project resetList(); 4239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mRecycler.clear(); 4249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mHeaderViewInfos.size() > 0|| mFooterViewInfos.size() > 0) { 4269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mAdapter = new HeaderViewListAdapter(mHeaderViewInfos, mFooterViewInfos, adapter); 4279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 4289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mAdapter = adapter; 4299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOldSelectedPosition = INVALID_POSITION; 4329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOldSelectedRowId = INVALID_ROW_ID; 4339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mAdapter != null) { 4349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mAreAllItemsSelectable = mAdapter.areAllItemsEnabled(); 4359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOldItemCount = mItemCount; 4369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mItemCount = mAdapter.getCount(); 4379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkFocus(); 4389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDataSetObserver = new AdapterDataSetObserver(); 4409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mAdapter.registerDataSetObserver(mDataSetObserver); 4419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mRecycler.setViewTypeCount(mAdapter.getViewTypeCount()); 4439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int position; 4459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mStackFromBottom) { 4469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project position = lookForSelectablePosition(mItemCount - 1, false); 4479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 4489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project position = lookForSelectablePosition(0, true); 4499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelectedPositionInt(position); 4519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setNextSelectedPositionInt(position); 4529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mItemCount == 0) { 4549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Nothing selected 4559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkSelectionChanged(); 4569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 458cb704cd1e05ecd9bbd9bebd16f3b816dcb0c5309Adam Powell if (mChoiceMode != CHOICE_MODE_NONE && 459cb704cd1e05ecd9bbd9bebd16f3b816dcb0c5309Adam Powell mAdapter.hasStableIds() && 460cb704cd1e05ecd9bbd9bebd16f3b816dcb0c5309Adam Powell mCheckedIdStates == null) { 461cb704cd1e05ecd9bbd9bebd16f3b816dcb0c5309Adam Powell mCheckedIdStates = new LongSparseArray<Boolean>(); 462cb704cd1e05ecd9bbd9bebd16f3b816dcb0c5309Adam Powell } 463cb704cd1e05ecd9bbd9bebd16f3b816dcb0c5309Adam Powell 4649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 4659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mAreAllItemsSelectable = true; 4669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkFocus(); 4679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Nothing selected 4689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkSelectionChanged(); 4699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mCheckStates != null) { 4729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mCheckStates.clear(); 4739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4748f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell 4758f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell if (mCheckedIdStates != null) { 4768f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell mCheckedIdStates.clear(); 4778f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell } 4789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 4809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The list is empty. Clear everything out. 4859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 4879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void resetList() { 4882e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy // The parent's resetList() will remove all views from the layout so we need to 4892e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy // cleanup the state of our footers and headers 4902e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy clearRecycledState(mHeaderViewInfos); 4912e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy clearRecycledState(mFooterViewInfos); 4922e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy 4939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.resetList(); 4942e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy 4959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutMode = LAYOUT_NORMAL; 4969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4982e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy private void clearRecycledState(ArrayList<FixedViewInfo> infos) { 4992e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy if (infos != null) { 5002e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy final int count = infos.size(); 5012e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy 5022e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy for (int i = 0; i < count; i++) { 5032e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy final View child = infos.get(i).view; 5042e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy final LayoutParams p = (LayoutParams) child.getLayoutParams(); 5052e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy if (p != null) { 5062e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy p.recycledHeaderFooter = false; 5072e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy } 5082e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy } 5092e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy } 5102e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy } 5112e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy 5129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Whether the list needs to show the top fading edge 5149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean showingTopFadingEdge() { 5169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int listTop = mScrollY + mListPadding.top; 5179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (mFirstPosition > 0) || (getChildAt(0).getTop() > listTop); 5189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Whether the list needs to show the bottom fading edge 5229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean showingBottomFadingEdge() { 5249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childCount = getChildCount(); 5259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int bottomOfBottomChild = getChildAt(childCount - 1).getBottom(); 5269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int lastVisiblePosition = mFirstPosition + childCount - 1; 5279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int listBottom = mScrollY + getHeight() - mListPadding.bottom; 5299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (lastVisiblePosition < mItemCount - 1) 5319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project || (bottomOfBottomChild < listBottom); 5329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 5369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean requestChildRectangleOnScreen(View child, Rect rect, boolean immediate) { 5379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int rectTopWithinChild = rect.top; 5399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // offset so rect is in coordinates of the this view 5419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project rect.offset(child.getLeft(), child.getTop()); 5429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project rect.offset(-child.getScrollX(), -child.getScrollY()); 5439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int height = getHeight(); 5459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int listUnfadedTop = getScrollY(); 5469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int listUnfadedBottom = listUnfadedTop + height; 5479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int fadingEdge = getVerticalFadingEdgeLength(); 5489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (showingTopFadingEdge()) { 5509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // leave room for top fading edge as long as rect isn't at very top 5519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((mSelectedPosition > 0) || (rectTopWithinChild > fadingEdge)) { 5529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project listUnfadedTop += fadingEdge; 5539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childCount = getChildCount(); 5579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int bottomOfBottomChild = getChildAt(childCount - 1).getBottom(); 5589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (showingBottomFadingEdge()) { 5609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // leave room for bottom fading edge as long as rect isn't at very bottom 5619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((mSelectedPosition < mItemCount - 1) 5629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project || (rect.bottom < (bottomOfBottomChild - fadingEdge))) { 5639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project listUnfadedBottom -= fadingEdge; 5649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int scrollYDelta = 0; 5689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (rect.bottom > listUnfadedBottom && rect.top > listUnfadedTop) { 5709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // need to MOVE DOWN to get it in view: move down just enough so 5719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // that the entire rectangle is in view (or at least the first 5729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // screen size chunk). 5739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (rect.height() > height) { 5759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // just enough to get screen size chunk on 5769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project scrollYDelta += (rect.top - listUnfadedTop); 5779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 5789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // get entire rect at bottom of screen 5799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project scrollYDelta += (rect.bottom - listUnfadedBottom); 5809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // make sure we aren't scrolling beyond the end of our children 5839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int distanceToBottom = bottomOfBottomChild - listUnfadedBottom; 5849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project scrollYDelta = Math.min(scrollYDelta, distanceToBottom); 5859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (rect.top < listUnfadedTop && rect.bottom < listUnfadedBottom) { 5869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // need to MOVE UP to get it in view: move up just enough so that 5879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // entire rectangle is in view (or at least the first screen 5889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // size chunk of it). 5899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (rect.height() > height) { 5919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // screen size chunk 5929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project scrollYDelta -= (listUnfadedBottom - rect.bottom); 5939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 5949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // entire rect at top 5959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project scrollYDelta -= (listUnfadedTop - rect.top); 5969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // make sure we aren't scrolling any further than the top our children 5999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int top = getChildAt(0).getTop(); 6009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int deltaToTop = top - listUnfadedTop; 6019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project scrollYDelta = Math.max(scrollYDelta, deltaToTop); 6029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean scroll = scrollYDelta != 0; 6059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (scroll) { 6069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project scrollListItemsBy(-scrollYDelta); 6079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project positionSelector(child); 6089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectedTop = child.getTop(); 6099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invalidate(); 6109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return scroll; 6129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 6169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 6189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void fillGap(boolean down) { 6199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getChildCount(); 6209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (down) { 6219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int startOffset = count > 0 ? getChildAt(count - 1).getBottom() + mDividerHeight : 6229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project getListPaddingTop(); 6239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillDown(mFirstPosition + count, startOffset); 6249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project correctTooHigh(getChildCount()); 6259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 6269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int startOffset = count > 0 ? getChildAt(0).getTop() - mDividerHeight : 6279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project getHeight() - getListPaddingBottom(); 6289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillUp(mFirstPosition - 1, startOffset); 6299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project correctTooLow(getChildCount()); 6309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Fills the list from pos down to the end of the list view. 6359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param pos The first position to put in the list 6379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param nextTop The location where the top of the item associated with pos 6399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * should be drawn 6409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The view that is currently selected, if it happens to be in the 6429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * range that we draw. 6439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private View fillDown(int pos, int nextTop) { 6459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View selectedView = null; 6469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int end = (mBottom - mTop) - mListPadding.bottom; 6489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while (nextTop < end && pos < mItemCount) { 6509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // is this the selected item? 6519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean selected = pos == mSelectedPosition; 6529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View child = makeAndAddView(pos, nextTop, true, mListPadding.left, selected); 6539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nextTop = child.getBottom() + mDividerHeight; 6559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (selected) { 6569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedView = child; 6579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project pos++; 6599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return selectedView; 6629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Fills the list from pos up to the top of the list view. 6669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param pos The first position to put in the list 6689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param nextBottom The location where the bottom of the item associated 6709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * with pos should be drawn 6719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The view that is currently selected 6739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private View fillUp(int pos, int nextBottom) { 6759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View selectedView = null; 6769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int end = mListPadding.top; 6789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while (nextBottom > end && pos >= 0) { 6809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // is this the selected item? 6819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean selected = pos == mSelectedPosition; 6829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View child = makeAndAddView(pos, nextBottom, false, mListPadding.left, selected); 6839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nextBottom = child.getTop() - mDividerHeight; 6849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (selected) { 6859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedView = child; 6869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project pos--; 6889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFirstPosition = pos + 1; 6919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return selectedView; 6939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Fills the list from top to bottom, starting with mFirstPosition 6979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param nextTop The location where the top of the first item should be 6999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * drawn 7009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The view that is currently selected 7029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private View fillFromTop(int nextTop) { 7049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFirstPosition = Math.min(mFirstPosition, mSelectedPosition); 7059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFirstPosition = Math.min(mFirstPosition, mItemCount - 1); 7069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mFirstPosition < 0) { 7079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFirstPosition = 0; 7089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return fillDown(mFirstPosition, nextTop); 7109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Put mSelectedPosition in the middle of the screen and then build up and 7159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * down from there. This method forces mSelectedPosition to the center. 7169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childrenTop Top of the area in which children can be drawn, as 7189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * measured in pixels 7199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childrenBottom Bottom of the area in which children can be drawn, 7209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * as measured in pixels 7219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Currently selected view 7229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private View fillFromMiddle(int childrenTop, int childrenBottom) { 7249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int height = childrenBottom - childrenTop; 7259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int position = reconcileSelectedPosition(); 7279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View sel = makeAndAddView(position, childrenTop, true, 7299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mListPadding.left, true); 7309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFirstPosition = position; 7319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int selHeight = sel.getMeasuredHeight(); 7339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (selHeight <= height) { 7349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel.offsetTopAndBottom((height - selHeight) / 2); 7359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillAboveAndBelow(sel, position); 7389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mStackFromBottom) { 7409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project correctTooHigh(getChildCount()); 7419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 7429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project correctTooLow(getChildCount()); 7439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return sel; 7469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Once the selected view as been placed, fill up the visible area above and 7509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * below it. 7519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param sel The selected view 7539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position The position corresponding to sel 7549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void fillAboveAndBelow(View sel, int position) { 7569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int dividerHeight = mDividerHeight; 7579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mStackFromBottom) { 7589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillUp(position - 1, sel.getTop() - dividerHeight); 7599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adjustViewsUpOrDown(); 7609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillDown(position + 1, sel.getBottom() + dividerHeight); 7619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 7629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillDown(position + 1, sel.getBottom() + dividerHeight); 7639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adjustViewsUpOrDown(); 7649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillUp(position - 1, sel.getTop() - dividerHeight); 7659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Fills the grid based on positioning the new selection at a specific 7719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * location. The selection may be moved so that it does not intersect the 7729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * faded edges. The grid is then filled upwards and downwards from there. 7739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param selectedTop Where the selected item should be 7759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childrenTop Where to start drawing children 7769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childrenBottom Last pixel where children can be drawn 7779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The view that currently has selection 7789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private View fillFromSelection(int selectedTop, int childrenTop, int childrenBottom) { 7809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int fadingEdgeLength = getVerticalFadingEdgeLength(); 7819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int selectedPosition = mSelectedPosition; 7829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View sel; 7849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int topSelectionPixel = getTopSelectionPixel(childrenTop, fadingEdgeLength, 7869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedPosition); 7879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int bottomSelectionPixel = getBottomSelectionPixel(childrenBottom, fadingEdgeLength, 7889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedPosition); 7899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = makeAndAddView(selectedPosition, selectedTop, true, mListPadding.left, true); 7919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Some of the newly selected item extends below the bottom of the list 7949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (sel.getBottom() > bottomSelectionPixel) { 7959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Find space available above the selection into which we can scroll 7969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // upwards 7979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int spaceAbove = sel.getTop() - topSelectionPixel; 7989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Find space required to bring the bottom of the selected item 8009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // fully into view 8019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int spaceBelow = sel.getBottom() - bottomSelectionPixel; 8029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int offset = Math.min(spaceAbove, spaceBelow); 8039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Now offset the selected item to get it into view 8059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel.offsetTopAndBottom(-offset); 8069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (sel.getTop() < topSelectionPixel) { 8079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Find space required to bring the top of the selected item fully 8089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // into view 8099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int spaceAbove = topSelectionPixel - sel.getTop(); 8109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Find space available below the selection into which we can scroll 8129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // downwards 8139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int spaceBelow = bottomSelectionPixel - sel.getBottom(); 8149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int offset = Math.min(spaceAbove, spaceBelow); 8159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Offset the selected item to get it into view 8179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel.offsetTopAndBottom(offset); 8189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Fill in views above and below 8219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillAboveAndBelow(sel, selectedPosition); 8229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mStackFromBottom) { 8249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project correctTooHigh(getChildCount()); 8259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 8269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project correctTooLow(getChildCount()); 8279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return sel; 8309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 8339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Calculate the bottom-most pixel we can draw the selection into 8349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 8359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childrenBottom Bottom pixel were children can be drawn 8369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param fadingEdgeLength Length of the fading edge in pixels, if present 8379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param selectedPosition The position that will be selected 8389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The bottom-most pixel we can draw the selection into 8399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 8409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int getBottomSelectionPixel(int childrenBottom, int fadingEdgeLength, 8419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int selectedPosition) { 8429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int bottomSelectionPixel = childrenBottom; 8439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (selectedPosition != mItemCount - 1) { 8449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bottomSelectionPixel -= fadingEdgeLength; 8459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return bottomSelectionPixel; 8479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 8509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Calculate the top-most pixel we can draw the selection into 8519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 8529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childrenTop Top pixel were children can be drawn 8539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param fadingEdgeLength Length of the fading edge in pixels, if present 8549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param selectedPosition The position that will be selected 8559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The top-most pixel we can draw the selection into 8569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 8579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int getTopSelectionPixel(int childrenTop, int fadingEdgeLength, int selectedPosition) { 8589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // first pixel we can draw the selection into 8599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int topSelectionPixel = childrenTop; 8609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (selectedPosition > 0) { 8619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project topSelectionPixel += fadingEdgeLength; 8629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return topSelectionPixel; 8649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 8689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Fills the list based on positioning the new selection relative to the old 8699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * selection. The new selection will be placed at, above, or below the 8709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * location of the new selection depending on how the selection is moving. 8719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The selection will then be pinned to the visible part of the screen, 8729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * excluding the edges that are faded. The list is then filled upwards and 8739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * downwards from there. 8749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 8759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param oldSel The old selected view. Useful for trying to put the new 8769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * selection in the same place 8779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param newSel The view that is to become selected. Useful for trying to 8789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * put the new selection in the same place 8799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param delta Which way we are moving 8809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childrenTop Where to start drawing children 8819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childrenBottom Last pixel where children can be drawn 8829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The view that currently has selection 8839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 8849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private View moveSelection(View oldSel, View newSel, int delta, int childrenTop, 8859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childrenBottom) { 8869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int fadingEdgeLength = getVerticalFadingEdgeLength(); 8879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int selectedPosition = mSelectedPosition; 8889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View sel; 8909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int topSelectionPixel = getTopSelectionPixel(childrenTop, fadingEdgeLength, 8929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedPosition); 8939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int bottomSelectionPixel = getBottomSelectionPixel(childrenTop, fadingEdgeLength, 8949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedPosition); 8959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (delta > 0) { 8979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 8989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Case 1: Scrolling down. 8999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 9029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Before After 9039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * | | | | 9049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * +-------+ +-------+ 9059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * | A | | A | 9069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * | 1 | => +-------+ 9079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * +-------+ | B | 9089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * | B | | 2 | 9099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * +-------+ +-------+ 9109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * | | | | 9119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 9129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Try to keep the top of the previously selected item where it was. 9139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * oldSel = A 9149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * sel = B 9159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Put oldSel (A) where it belongs 9189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project oldSel = makeAndAddView(selectedPosition - 1, oldSel.getTop(), true, 9199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mListPadding.left, false); 9209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int dividerHeight = mDividerHeight; 9229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Now put the new selection (B) below that 9249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = makeAndAddView(selectedPosition, oldSel.getBottom() + dividerHeight, true, 9259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mListPadding.left, true); 9269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Some of the newly selected item extends below the bottom of the list 9289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (sel.getBottom() > bottomSelectionPixel) { 9299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Find space available above the selection into which we can scroll upwards 9319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int spaceAbove = sel.getTop() - topSelectionPixel; 9329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Find space required to bring the bottom of the selected item fully into view 9349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int spaceBelow = sel.getBottom() - bottomSelectionPixel; 9359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Don't scroll more than half the height of the list 9379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int halfVerticalSpace = (childrenBottom - childrenTop) / 2; 9389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int offset = Math.min(spaceAbove, spaceBelow); 9399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project offset = Math.min(offset, halfVerticalSpace); 9409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // We placed oldSel, so offset that item 9429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project oldSel.offsetTopAndBottom(-offset); 9439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Now offset the selected item to get it into view 9449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel.offsetTopAndBottom(-offset); 9459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Fill in views above and below 9489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mStackFromBottom) { 9499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillUp(mSelectedPosition - 2, sel.getTop() - dividerHeight); 9509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adjustViewsUpOrDown(); 9519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillDown(mSelectedPosition + 1, sel.getBottom() + dividerHeight); 9529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 9539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillDown(mSelectedPosition + 1, sel.getBottom() + dividerHeight); 9549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adjustViewsUpOrDown(); 9559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillUp(mSelectedPosition - 2, sel.getTop() - dividerHeight); 9569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (delta < 0) { 9589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 9599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Case 2: Scrolling up. 9609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 9639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Before After 9649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * | | | | 9659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * +-------+ +-------+ 9669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * | A | | A | 9679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * +-------+ => | 1 | 9689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * | B | +-------+ 9699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * | 2 | | B | 9709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * +-------+ +-------+ 9719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * | | | | 9729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 9739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Try to keep the top of the item about to become selected where it was. 9749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * newSel = A 9759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * olSel = B 9769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (newSel != null) { 9799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Try to position the top of newSel (A) where it was before it was selected 9809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = makeAndAddView(selectedPosition, newSel.getTop(), true, mListPadding.left, 9819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project true); 9829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 9839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If (A) was not on screen and so did not have a view, position 9849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // it above the oldSel (B) 9859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = makeAndAddView(selectedPosition, oldSel.getTop(), false, mListPadding.left, 9869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project true); 9879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Some of the newly selected item extends above the top of the list 9909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (sel.getTop() < topSelectionPixel) { 9919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Find space required to bring the top of the selected item fully into view 9929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int spaceAbove = topSelectionPixel - sel.getTop(); 9939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Find space available below the selection into which we can scroll downwards 9959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int spaceBelow = bottomSelectionPixel - sel.getBottom(); 9969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Don't scroll more than half the height of the list 9989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int halfVerticalSpace = (childrenBottom - childrenTop) / 2; 9999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int offset = Math.min(spaceAbove, spaceBelow); 10009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project offset = Math.min(offset, halfVerticalSpace); 10019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Offset the selected item to get it into view 10039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel.offsetTopAndBottom(offset); 10049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Fill in views above and below 10079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillAboveAndBelow(sel, selectedPosition); 10089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 10099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int oldTop = oldSel.getTop(); 10119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 10139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Case 3: Staying still 10149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 10159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = makeAndAddView(selectedPosition, oldTop, true, mListPadding.left, true); 10169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // We're staying still... 10189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (oldTop < childrenTop) { 10199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // ... but the top of the old selection was off screen. 10209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // (This can happen if the data changes size out from under us) 10219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int newBottom = sel.getBottom(); 10229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (newBottom < childrenTop + 20) { 10239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Not enough visible -- bring it onscreen 10249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel.offsetTopAndBottom(childrenTop - sel.getTop()); 10259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Fill in views above and below 10299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillAboveAndBelow(sel, selectedPosition); 10309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return sel; 10339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10359bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell private class FocusSelector implements Runnable { 10369bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell private int mPosition; 10379bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell private int mPositionTop; 10389bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell 10399bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell public FocusSelector setup(int position, int top) { 10409bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell mPosition = position; 10419bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell mPositionTop = top; 10429bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell return this; 10439bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell } 10449bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell 10459bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell public void run() { 10469bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell setSelectionFromTop(mPosition, mPositionTop); 10479bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell } 10489bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell } 10499bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell 10509bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell @Override 10519bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell protected void onSizeChanged(int w, int h, int oldw, int oldh) { 10529bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell if (getChildCount() > 0) { 10539bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell View focusedChild = getFocusedChild(); 10549bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell if (focusedChild != null) { 10559bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell final int childPosition = mFirstPosition + indexOfChild(focusedChild); 10569bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell final int childBottom = focusedChild.getBottom(); 10579bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell final int offset = Math.max(0, childBottom - (h - mPaddingTop)); 10589bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell final int top = focusedChild.getTop() - offset; 10599bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell if (mFocusSelector == null) { 10609bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell mFocusSelector = new FocusSelector(); 10619bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell } 10629bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell post(mFocusSelector.setup(childPosition, top)); 10639bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell } 10649bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell } 10659bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell super.onSizeChanged(w, h, oldw, oldh); 10669bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell } 10679bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell 10689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 10699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 10709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Sets up mListPadding 10719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.onMeasure(widthMeasureSpec, heightMeasureSpec); 10729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int widthMode = MeasureSpec.getMode(widthMeasureSpec); 10749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int heightMode = MeasureSpec.getMode(heightMeasureSpec); 10759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int widthSize = MeasureSpec.getSize(widthMeasureSpec); 10769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int heightSize = MeasureSpec.getSize(heightMeasureSpec); 10779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childWidth = 0; 10799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childHeight = 0; 10809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mItemCount = mAdapter == null ? 0 : mAdapter.getCount(); 10829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mItemCount > 0 && (widthMode == MeasureSpec.UNSPECIFIED || 10839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightMode == MeasureSpec.UNSPECIFIED)) { 108421875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy final View child = obtainView(0, mIsScrap); 10859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureScrapChild(child, 0, widthMeasureSpec); 10879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childWidth = child.getMeasuredWidth(); 10899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeight = child.getMeasuredHeight(); 10909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10919c3184cc162ee8c10eabd3f996629a9397a1f551Romain Guy if (recycleOnMeasure() && mRecycler.shouldRecycleViewType( 10929c3184cc162ee8c10eabd3f996629a9397a1f551Romain Guy ((LayoutParams) child.getLayoutParams()).viewType)) { 10939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mRecycler.addScrapView(child); 10949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (widthMode == MeasureSpec.UNSPECIFIED) { 10989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project widthSize = mListPadding.left + mListPadding.right + childWidth + 10999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project getVerticalScrollbarWidth(); 11009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (heightMode == MeasureSpec.UNSPECIFIED) { 11039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightSize = mListPadding.top + mListPadding.bottom + childHeight + 11049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project getVerticalFadingEdgeLength() * 2; 11059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (heightMode == MeasureSpec.AT_MOST) { 11089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // TODO: after first layout we should maybe start at the first visible position, not 0 11099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightSize = measureHeightOfChildren(widthMeasureSpec, 0, NO_POSITION, heightSize, -1); 11109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setMeasuredDimension(widthSize, heightSize); 11139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mWidthMeasureSpec = widthMeasureSpec; 11149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void measureScrapChild(View child, int position, int widthMeasureSpec) { 11179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LayoutParams p = (LayoutParams) child.getLayoutParams(); 11189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (p == null) { 1119980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy p = new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 11209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ViewGroup.LayoutParams.WRAP_CONTENT, 0); 11214df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project child.setLayoutParams(p); 11229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project p.viewType = mAdapter.getItemViewType(position); 11240bf88594c43ced48d862d122e3e84967b3b63658Romain Guy p.forceAdd = true; 11259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childWidthSpec = ViewGroup.getChildMeasureSpec(widthMeasureSpec, 11279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mListPadding.left + mListPadding.right, p.width); 11289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int lpHeight = p.height; 11299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childHeightSpec; 11309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lpHeight > 0) { 11319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeightSpec = MeasureSpec.makeMeasureSpec(lpHeight, MeasureSpec.EXACTLY); 11329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 11339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeightSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED); 11349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure(childWidthSpec, childHeightSpec); 11369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 11399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True to recycle the views used to measure this ListView in 11409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * UNSPECIFIED/AT_MOST modes, false otherwise. 11419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @hide 11429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1143986003d46add147714ce7e16c9fefa8c18042fc8Romain Guy @ViewDebug.ExportedProperty 11449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected boolean recycleOnMeasure() { 11459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 11469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 11499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Measures the height of the given range of children (inclusive) and 11509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * returns the height with this ListView's padding and divider heights 11519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * included. If maxHeight is provided, the measuring will stop when the 11529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * current height reaches maxHeight. 11539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 11549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param widthMeasureSpec The width measure spec to be given to a child's 11559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link View#measure(int, int)}. 11569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param startPosition The position of the first child to be shown. 11579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param endPosition The (inclusive) position of the last child to be 11589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * shown. Specify {@link #NO_POSITION} if the last child should be 11599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the last available child from the adapter. 11609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param maxHeight The maximum height that will be returned (if all the 11619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * children don't fit in this value, this value will be 11629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * returned). 11639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param disallowPartialChildPosition In general, whether the returned 11649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * height should only contain entire children. This is more 11659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * powerful--it is the first inclusive position at which partial 11669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * children will not be allowed. Example: it looks nice to have 11679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * at least 3 completely visible children, and in portrait this 11689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * will most likely fit; but in landscape there could be times 11699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * when even 2 children can not be completely shown, so a value 11709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * of 2 (remember, inclusive) would be good (assuming 11719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * startPosition is 0). 11729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The height of this ListView with the given children. 11739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 11749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int measureHeightOfChildren(int widthMeasureSpec, int startPosition, int endPosition, 11759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int maxHeight, int disallowPartialChildPosition) { 11769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final ListAdapter adapter = mAdapter; 11789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (adapter == null) { 11799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mListPadding.top + mListPadding.bottom; 11809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Include the padding of the list 11839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int returnedHeight = mListPadding.top + mListPadding.bottom; 11849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int dividerHeight = ((mDividerHeight > 0) && mDivider != null) ? mDividerHeight : 0; 11859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // The previous height value that was less than maxHeight and contained 11869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // no partial children 11879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int prevHeightWithoutPartialChild = 0; 11889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int i; 11899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View child; 11909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // mItemCount - 1 since endPosition parameter is inclusive 11929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project endPosition = (endPosition == NO_POSITION) ? adapter.getCount() - 1 : endPosition; 11939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final AbsListView.RecycleBin recycleBin = mRecycler; 11949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean recyle = recycleOnMeasure(); 119521875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy final boolean[] isScrap = mIsScrap; 11969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (i = startPosition; i <= endPosition; ++i) { 119821875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy child = obtainView(i, isScrap); 11999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureScrapChild(child, i, widthMeasureSpec); 12019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (i > 0) { 12039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Count the divider for all but one child 12049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project returnedHeight += dividerHeight; 12059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Recycle the view before we possibly return from the method 12089c3184cc162ee8c10eabd3f996629a9397a1f551Romain Guy if (recyle && recycleBin.shouldRecycleViewType( 12099c3184cc162ee8c10eabd3f996629a9397a1f551Romain Guy ((LayoutParams) child.getLayoutParams()).viewType)) { 12109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project recycleBin.addScrapView(child); 12119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project returnedHeight += child.getMeasuredHeight(); 12149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (returnedHeight >= maxHeight) { 12169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // We went over, figure out which height to return. If returnedHeight > maxHeight, 12179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // then the i'th position did not fit completely. 12189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (disallowPartialChildPosition >= 0) // Disallowing is enabled (> -1) 12199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project && (i > disallowPartialChildPosition) // We've past the min pos 12209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project && (prevHeightWithoutPartialChild > 0) // We have a prev height 12219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project && (returnedHeight != maxHeight) // i'th child did not fit completely 12229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ? prevHeightWithoutPartialChild 12239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project : maxHeight; 12249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((disallowPartialChildPosition >= 0) && (i >= disallowPartialChildPosition)) { 12279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project prevHeightWithoutPartialChild = returnedHeight; 12289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // At this point, we went through the range of children, and they each 12329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // completely fit, so return the returnedHeight 12339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return returnedHeight; 12349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 12379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int findMotionRow(int y) { 12389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childCount = getChildCount(); 12399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childCount > 0) { 124084222e04252720cf681032e865db526ce4a612a4Adam Powell if (!mStackFromBottom) { 124184222e04252720cf681032e865db526ce4a612a4Adam Powell for (int i = 0; i < childCount; i++) { 124284222e04252720cf681032e865db526ce4a612a4Adam Powell View v = getChildAt(i); 124384222e04252720cf681032e865db526ce4a612a4Adam Powell if (y <= v.getBottom()) { 124484222e04252720cf681032e865db526ce4a612a4Adam Powell return mFirstPosition + i; 124584222e04252720cf681032e865db526ce4a612a4Adam Powell } 124684222e04252720cf681032e865db526ce4a612a4Adam Powell } 124784222e04252720cf681032e865db526ce4a612a4Adam Powell } else { 124884222e04252720cf681032e865db526ce4a612a4Adam Powell for (int i = childCount - 1; i >= 0; i--) { 124984222e04252720cf681032e865db526ce4a612a4Adam Powell View v = getChildAt(i); 125084222e04252720cf681032e865db526ce4a612a4Adam Powell if (y >= v.getTop()) { 125184222e04252720cf681032e865db526ce4a612a4Adam Powell return mFirstPosition + i; 125284222e04252720cf681032e865db526ce4a612a4Adam Powell } 12539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return INVALID_POSITION; 12579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 12609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Put a specific item at a specific location on the screen and then build 12619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * up and down from there. 12629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 12639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position The reference view to use as the starting point 12649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param top Pixel offset from the top of this view to the top of the 12659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * reference view. 12669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 12679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The selected view, or null if the selected view is outside the 12689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * visible area. 12699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 12709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private View fillSpecific(int position, int top) { 12719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean tempIsSelected = position == mSelectedPosition; 12729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View temp = makeAndAddView(position, top, true, mListPadding.left, tempIsSelected); 12739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Possibly changed again in fillUp if we add rows above this one. 12749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFirstPosition = position; 12759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View above; 12779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View below; 12789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int dividerHeight = mDividerHeight; 12809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mStackFromBottom) { 12819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project above = fillUp(position - 1, temp.getTop() - dividerHeight); 12829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // This will correct for the top of the first view not touching the top of the list 12839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adjustViewsUpOrDown(); 12849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project below = fillDown(position + 1, temp.getBottom() + dividerHeight); 12859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childCount = getChildCount(); 12869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childCount > 0) { 12879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project correctTooHigh(childCount); 12889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 12909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project below = fillDown(position + 1, temp.getBottom() + dividerHeight); 12919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // This will correct for the bottom of the last view not touching the bottom of the list 12929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adjustViewsUpOrDown(); 12939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project above = fillUp(position - 1, temp.getTop() - dividerHeight); 12949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childCount = getChildCount(); 12959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childCount > 0) { 12969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project correctTooLow(childCount); 12979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (tempIsSelected) { 13019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return temp; 13029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (above != null) { 13039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return above; 13049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 13059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return below; 13069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 13109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Check if we have dragged the bottom of the list too high (we have pushed the 13119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * top element off the top of the screen when we did not need to). Correct by sliding 13129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * everything back down. 13139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 13149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childCount Number of children 13159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 13169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void correctTooHigh(int childCount) { 13179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // First see if the last item is visible. If it is not, it is OK for the 13189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // top of the list to be pushed up. 13199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int lastPosition = mFirstPosition + childCount - 1; 13209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lastPosition == mItemCount - 1 && childCount > 0) { 13219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Get the last child ... 13239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View lastChild = getChildAt(childCount - 1); 13249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // ... and its bottom edge 13269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int lastBottom = lastChild.getBottom(); 13279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // This is bottom of our drawable area 13299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int end = (mBottom - mTop) - mListPadding.bottom; 13309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // This is how far the bottom edge of the last view is from the bottom of the 13329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // drawable area 13339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int bottomOffset = end - lastBottom; 13349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View firstChild = getChildAt(0); 13359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int firstTop = firstChild.getTop(); 13369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Make sure we are 1) Too high, and 2) Either there are more rows above the 13389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // first row or the first row is scrolled off the top of the drawable area 13399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (bottomOffset > 0 && (mFirstPosition > 0 || firstTop < mListPadding.top)) { 13409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mFirstPosition == 0) { 13419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Don't pull the top too far down 13429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bottomOffset = Math.min(bottomOffset, mListPadding.top - firstTop); 13439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Move everything down 13459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project offsetChildrenTopAndBottom(bottomOffset); 13469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mFirstPosition > 0) { 13479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Fill the gap that was opened above mFirstPosition with more rows, if 13489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // possible 13499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillUp(mFirstPosition - 1, firstChild.getTop() - mDividerHeight); 13509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Close up the remaining gap 13519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adjustViewsUpOrDown(); 13529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 13599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Check if we have dragged the bottom of the list too low (we have pushed the 13609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * bottom element off the bottom of the screen when we did not need to). Correct by sliding 13619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * everything back up. 13629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 13639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childCount Number of children 13649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 13659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void correctTooLow(int childCount) { 13669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // First see if the first item is visible. If it is not, it is OK for the 13679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // bottom of the list to be pushed down. 13689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mFirstPosition == 0 && childCount > 0) { 13699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Get the first child ... 13719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View firstChild = getChildAt(0); 13729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // ... and its top edge 13749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int firstTop = firstChild.getTop(); 13759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // This is top of our drawable area 13779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int start = mListPadding.top; 13789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // This is bottom of our drawable area 13809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int end = (mBottom - mTop) - mListPadding.bottom; 13819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // This is how far the top edge of the first view is from the top of the 13839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // drawable area 13849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int topOffset = firstTop - start; 13859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View lastChild = getChildAt(childCount - 1); 13869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int lastBottom = lastChild.getBottom(); 13879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int lastPosition = mFirstPosition + childCount - 1; 13889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Make sure we are 1) Too low, and 2) Either there are more rows below the 13909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // last row or the last row is scrolled off the bottom of the drawable area 13916198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy if (topOffset > 0) { 13926198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy if (lastPosition < mItemCount - 1 || lastBottom > end) { 13936198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy if (lastPosition == mItemCount - 1) { 13946198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy // Don't pull the bottom too far up 13956198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy topOffset = Math.min(topOffset, lastBottom - end); 13966198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy } 13976198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy // Move everything up 13986198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy offsetChildrenTopAndBottom(-topOffset); 13996198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy if (lastPosition < mItemCount - 1) { 14006198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy // Fill the gap that was opened below the last position with more rows, if 14016198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy // possible 14026198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy fillDown(lastPosition + 1, lastChild.getBottom() + mDividerHeight); 14036198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy // Close up the remaining gap 14046198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy adjustViewsUpOrDown(); 14056198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy } 14066198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy } else if (lastPosition == mItemCount - 1) { 14076198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy adjustViewsUpOrDown(); 14089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 14149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void layoutChildren() { 14159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean blockLayoutRequests = mBlockLayoutRequests; 14169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!blockLayoutRequests) { 14179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBlockLayoutRequests = true; 14184df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project } else { 14194df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project return; 14209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 14239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.layoutChildren(); 14249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invalidate(); 14269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mAdapter == null) { 14289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project resetList(); 14299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invokeOnItemScrollListener(); 14309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 14319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childrenTop = mListPadding.top; 14349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childrenBottom = mBottom - mTop - mListPadding.bottom; 14359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childCount = getChildCount(); 1437ead0d4d8282b35a10bf8816cd99a62a8499d9031Romain Guy int index = 0; 14389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int delta = 0; 14399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View sel; 14419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View oldSel = null; 14429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View oldFirst = null; 14439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View newSel = null; 14449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View focusLayoutRestoreView = null; 14469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remember stuff we will need down below 14489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (mLayoutMode) { 14499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case LAYOUT_SET_SELECTION: 14509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project index = mNextSelectedPosition - mFirstPosition; 14519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (index >= 0 && index < childCount) { 14529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project newSel = getChildAt(index); 14539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 14559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case LAYOUT_FORCE_TOP: 14569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case LAYOUT_FORCE_BOTTOM: 14579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case LAYOUT_SPECIFIC: 14589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case LAYOUT_SYNC: 14599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 14609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case LAYOUT_MOVE_SELECTION: 14619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project default: 14629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remember the previously selected view 14639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project index = mSelectedPosition - mFirstPosition; 14649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (index >= 0 && index < childCount) { 14659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project oldSel = getChildAt(index); 14669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remember the previous first child 14699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project oldFirst = getChildAt(0); 14709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mNextSelectedPosition >= 0) { 14729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project delta = mNextSelectedPosition - mSelectedPosition; 14739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Caution: newSel might be null 14769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project newSel = getChildAt(index + delta); 14779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean dataChanged = mDataChanged; 14819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (dataChanged) { 14829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handleDataChanged(); 14839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Handle the empty set by removing all views that are visible 14869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // and calling it a day 14879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mItemCount == 0) { 14889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project resetList(); 14899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invokeOnItemScrollListener(); 14909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 1491b45f124a041adf81b3ac8b8dec6b396e751e92d7Romain Guy } else if (mItemCount != mAdapter.getCount()) { 1492b45f124a041adf81b3ac8b8dec6b396e751e92d7Romain Guy throw new IllegalStateException("The content of the adapter has changed but " 1493b45f124a041adf81b3ac8b8dec6b396e751e92d7Romain Guy + "ListView did not receive a notification. Make sure the content of " 1494b45f124a041adf81b3ac8b8dec6b396e751e92d7Romain Guy + "your adapter is not modified from a background thread, but only " 14953940f2df36fbe6a712c88655fc78244977ebd0abOwen Lin + "from the UI thread. [in ListView(" + getId() + ", " + getClass() 14963940f2df36fbe6a712c88655fc78244977ebd0abOwen Lin + ") with Adapter(" + mAdapter.getClass() + ")]"); 14979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelectedPositionInt(mNextSelectedPosition); 15009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Pull all children into the RecycleBin. 15029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // These views will be reused if possible 15039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int firstPosition = mFirstPosition; 15049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final RecycleBin recycleBin = mRecycler; 15059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // reset the focus restoration 15079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View focusLayoutRestoreDirectChild = null; 15089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Don't put header or footer views into the Recycler. Those are 15119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // already cached in mHeaderViews; 15129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (dataChanged) { 15139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < childCount; i++) { 15149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project recycleBin.addScrapView(getChildAt(i)); 15159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (ViewDebug.TRACE_RECYCLER) { 15169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ViewDebug.trace(getChildAt(i), 15179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ViewDebug.RecyclerTraceType.MOVE_TO_SCRAP_HEAP, index, i); 15189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 15219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project recycleBin.fillActiveViews(childCount, firstPosition); 15229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // take focus back to us temporarily to avoid the eventual 15259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // call to clear focus when removing the focused child below 15269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // from messing things up when ViewRoot assigns focus back 15279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // to someone else 15289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View focusedChild = getFocusedChild(); 15299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (focusedChild != null) { 15309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // TODO: in some cases focusedChild.getParent() == null 15319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // we can remember the focused view to restore after relayout if the 15339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // data hasn't changed, or if the focused position is a header or footer 15349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!dataChanged || isDirectChildHeaderOrFooter(focusedChild)) { 15354df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project focusLayoutRestoreDirectChild = focusedChild; 15364df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project // remember the specific view that had focus 15374df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project focusLayoutRestoreView = findFocus(); 15384df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project if (focusLayoutRestoreView != null) { 15394df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project // tell it we are going to mess with it 15404df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project focusLayoutRestoreView.onStartTemporaryDetach(); 15419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestFocus(); 15449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Clear out old views 15479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project detachAllViewsFromParent(); 15489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (mLayoutMode) { 15509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case LAYOUT_SET_SELECTION: 15519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (newSel != null) { 15529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = fillFromSelection(newSel.getTop(), childrenTop, childrenBottom); 15539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 15549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = fillFromMiddle(childrenTop, childrenBottom); 15559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 15579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case LAYOUT_SYNC: 15589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = fillSpecific(mSyncPosition, mSpecificTop); 15599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 15609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case LAYOUT_FORCE_BOTTOM: 15619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = fillUp(mItemCount - 1, childrenBottom); 15629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adjustViewsUpOrDown(); 15639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 15649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case LAYOUT_FORCE_TOP: 15659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFirstPosition = 0; 15669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = fillFromTop(childrenTop); 15679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adjustViewsUpOrDown(); 15689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 15699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case LAYOUT_SPECIFIC: 15709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = fillSpecific(reconcileSelectedPosition(), mSpecificTop); 15719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 15729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case LAYOUT_MOVE_SELECTION: 15739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = moveSelection(oldSel, newSel, delta, childrenTop, childrenBottom); 15749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 15759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project default: 15769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childCount == 0) { 15779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mStackFromBottom) { 15789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int position = lookForSelectablePosition(0, true); 15799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelectedPositionInt(position); 15809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = fillFromTop(childrenTop); 15819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 15829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int position = lookForSelectablePosition(mItemCount - 1, false); 15839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelectedPositionInt(position); 15849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = fillUp(mItemCount - 1, childrenBottom); 15859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 15879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mSelectedPosition >= 0 && mSelectedPosition < mItemCount) { 15889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = fillSpecific(mSelectedPosition, 15899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project oldSel == null ? childrenTop : oldSel.getTop()); 15909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (mFirstPosition < mItemCount) { 15919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = fillSpecific(mFirstPosition, 15929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project oldFirst == null ? childrenTop : oldFirst.getTop()); 15939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 15949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = fillSpecific(0, childrenTop); 15959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 15989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Flush any cached views that did not get reused above 16019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project recycleBin.scrapActiveViews(); 16029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (sel != null) { 16043616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy // the current selected item should get focus if items 16053616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy // are focusable 16063616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy if (mItemsCanFocus && hasFocus() && !sel.hasFocus()) { 16073616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy final boolean focusWasTaken = (sel == focusLayoutRestoreDirectChild && 16083616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy focusLayoutRestoreView.requestFocus()) || sel.requestFocus(); 16093616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy if (!focusWasTaken) { 16103616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy // selected item didn't take focus, fine, but still want 16113616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy // to make sure something else outside of the selected view 16123616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy // has focus 16133616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy final View focused = getFocusedChild(); 16143616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy if (focused != null) { 16153616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy focused.clearFocus(); 16163616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy } 16173616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy positionSelector(sel); 16183616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy } else { 16193616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy sel.setSelected(false); 16203616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy mSelectorRect.setEmpty(); 16213616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy } 16223616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy } else { 16233616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy positionSelector(sel); 16243616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy } 16253616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy mSelectedTop = sel.getTop(); 16269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 16273616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy if (mTouchMode > TOUCH_MODE_DOWN && mTouchMode < TOUCH_MODE_SCROLL) { 16283616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy View child = getChildAt(mMotionPosition - mFirstPosition); 1629b4c547a56caebb5900c132ec9d5ce953f89de14fRomain Guy if (child != null) positionSelector(child); 16303616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy } else { 16313616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy mSelectedTop = 0; 16323616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy mSelectorRect.setEmpty(); 16333616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy } 16343616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy 16353616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy // even if there is not selected position, we may need to restore 16363616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy // focus (i.e. something focusable in touch mode) 16373616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy if (hasFocus() && focusLayoutRestoreView != null) { 16383616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy focusLayoutRestoreView.requestFocus(); 16393616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy } 16409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // tell focus view we are done mucking with it, if it is still in 16439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // our view hierarchy. 16449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (focusLayoutRestoreView != null 16459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project && focusLayoutRestoreView.getWindowToken() != null) { 16469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project focusLayoutRestoreView.onFinishTemporaryDetach(); 16479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutMode = LAYOUT_NORMAL; 16509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDataChanged = false; 16519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNeedSync = false; 16529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setNextSelectedPositionInt(mSelectedPosition); 16539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project updateScrollIndicators(); 16559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mItemCount > 0) { 16579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkSelectionChanged(); 16589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invokeOnItemScrollListener(); 16619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } finally { 16629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!blockLayoutRequests) { 16639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBlockLayoutRequests = false; 16649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 16699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child a direct child of this list. 16709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Whether child is a header or footer view. 16719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 16729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean isDirectChildHeaderOrFooter(View child) { 16739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final ArrayList<FixedViewInfo> headers = mHeaderViewInfos; 16759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int numHeaders = headers.size(); 16769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < numHeaders; i++) { 16779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == headers.get(i).view) { 16789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 16799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final ArrayList<FixedViewInfo> footers = mFooterViewInfos; 16829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int numFooters = footers.size(); 16839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < numFooters; i++) { 16849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == footers.get(i).view) { 16859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 16869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 16899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 16929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Obtain the view and add it to our list of children. The view can be made 16939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * fresh, converted from an unused view, or used as is if it was in the 16949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * recycle bin. 16959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 16969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position Logical position in the list 16979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y Top or bottom edge of the view to add 16989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param flow If flow is true, align top edge to y. If false, align bottom 16999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * edge to y. 17009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childrenLeft Left edge where children should be positioned 17019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param selected Is this position selected? 17029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return View that was added 17039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 17049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private View makeAndAddView(int position, int y, boolean flow, int childrenLeft, 17059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean selected) { 17069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View child; 17079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mDataChanged) { 17109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Try to use an exsiting view for this position 17119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child = mRecycler.getActiveView(position); 17129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child != null) { 17139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (ViewDebug.TRACE_RECYCLER) { 17149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ViewDebug.trace(child, ViewDebug.RecyclerTraceType.RECYCLE_FROM_ACTIVE_HEAP, 17159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project position, getChildCount()); 17169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Found it -- we're using an existing child 17199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // This just needs to be positioned 17209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setupChild(child, position, y, flow, childrenLeft, selected, true); 17219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return child; 17239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Make a new view for this position, or convert an unused view if possible 172721875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy child = obtainView(position, mIsScrap); 17289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // This needs to be positioned and measured 173021875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy setupChild(child, position, y, flow, childrenLeft, selected, mIsScrap[0]); 17319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return child; 17339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 17369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Add a view as a child and make sure it is measured (if necessary) and 17379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * positioned properly. 17389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 17399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child The view to add 17409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position The position of this child 17419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y The y position relative to which this view will be positioned 17429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param flowDown If true, align top edge to y. If false, align bottom 17439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * edge to y. 17449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childrenLeft Left edge where children should be positioned 17459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param selected Is this position selected? 17469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param recycled Has this view been pulled from the recycle bin? If so it 17479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * does not need to be remeasured. 17489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 17499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void setupChild(View child, int position, int y, boolean flowDown, int childrenLeft, 17509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean selected, boolean recycled) { 17519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean isSelected = selected && shouldShowSelector(); 17529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean updateChildSelected = isSelected != child.isSelected(); 17533616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy final int mode = mTouchMode; 17543616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy final boolean isPressed = mode > TOUCH_MODE_DOWN && mode < TOUCH_MODE_SCROLL && 17553616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy mMotionPosition == position; 17563616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy final boolean updateChildPressed = isPressed != child.isPressed(); 17579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean needToMeasure = !recycled || updateChildSelected || child.isLayoutRequested(); 17589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Respect layout params that are already in the view. Otherwise make some up... 17609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // noinspection unchecked 17619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project AbsListView.LayoutParams p = (AbsListView.LayoutParams) child.getLayoutParams(); 17629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (p == null) { 1763980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy p = new AbsListView.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 17649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ViewGroup.LayoutParams.WRAP_CONTENT, 0); 17659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project p.viewType = mAdapter.getItemViewType(position); 17679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17680bf88594c43ced48d862d122e3e84967b3b63658Romain Guy if ((recycled && !p.forceAdd) || (p.recycledHeaderFooter && 1769c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project p.viewType == AdapterView.ITEM_VIEW_TYPE_HEADER_OR_FOOTER)) { 17709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project attachViewToParent(child, flowDown ? -1 : 0, p); 17719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 17720bf88594c43ced48d862d122e3e84967b3b63658Romain Guy p.forceAdd = false; 17734df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project if (p.viewType == AdapterView.ITEM_VIEW_TYPE_HEADER_OR_FOOTER) { 17744df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project p.recycledHeaderFooter = true; 17754df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project } 17769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project addViewInLayout(child, flowDown ? -1 : 0, p, true); 17779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (updateChildSelected) { 17809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.setSelected(isSelected); 17819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17833616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy if (updateChildPressed) { 17843616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy child.setPressed(isPressed); 17853616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy } 17863616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy 17879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mChoiceMode != CHOICE_MODE_NONE && mCheckStates != null) { 17889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child instanceof Checkable) { 17899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ((Checkable) child).setChecked(mCheckStates.get(position)); 17909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (needToMeasure) { 17949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childWidthSpec = ViewGroup.getChildMeasureSpec(mWidthMeasureSpec, 17959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mListPadding.left + mListPadding.right, p.width); 17969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int lpHeight = p.height; 17979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childHeightSpec; 17989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lpHeight > 0) { 17999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeightSpec = MeasureSpec.makeMeasureSpec(lpHeight, MeasureSpec.EXACTLY); 18009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 18019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeightSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED); 18029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure(childWidthSpec, childHeightSpec); 18049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 18059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project cleanupLayoutState(child); 18069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int w = child.getMeasuredWidth(); 18099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int h = child.getMeasuredHeight(); 18109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childTop = flowDown ? y : y - h; 18119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (needToMeasure) { 18139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childRight = childrenLeft + w; 18149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childBottom = childTop + h; 18159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.layout(childrenLeft, childTop, childRight, childBottom); 18169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 18179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.offsetLeftAndRight(childrenLeft - child.getLeft()); 18189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.offsetTopAndBottom(childTop - child.getTop()); 18199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mCachingStarted && !child.isDrawingCacheEnabled()) { 18229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.setDrawingCacheEnabled(true); 18239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 18279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected boolean canAnimate() { 18289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return super.canAnimate() && mItemCount > 0; 18299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 18329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sets the currently selected item. If in touch mode, the item will not be selected 18339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * but it will still be positioned appropriately. If the specified selection position 18349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * is less than 0, then the item at position 0 will be selected. 18359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 18369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position Index (starting at 0) of the data item to be selected. 18379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 18389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 18399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setSelection(int position) { 18409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelectionFromTop(position, 0); 18419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 18449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sets the selected item and positions the selection y pixels from the top edge 18459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * of the ListView. (If in touch mode, the item will not be selected but it will 18469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * still be positioned appropriately.) 18479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 18489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position Index (starting at 0) of the data item to be selected. 18499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y The distance from the top edge of the ListView (plus padding) that the 18509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * item will be positioned. 18519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 18529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setSelectionFromTop(int position, int y) { 18539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mAdapter == null) { 18549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 18559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!isInTouchMode()) { 18589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project position = lookForSelectablePosition(position, true); 18599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (position >= 0) { 18609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setNextSelectedPositionInt(position); 18619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 18639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mResurrectToPosition = position; 18649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (position >= 0) { 18679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutMode = LAYOUT_SPECIFIC; 18689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSpecificTop = mListPadding.top + y; 18699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mNeedSync) { 18719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSyncPosition = position; 18729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSyncRowId = mAdapter.getItemId(position); 18739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 18769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 18809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Makes the item at the supplied position selected. 1881f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron * 18829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position the position of the item to select 18839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 18849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 18859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void setSelectionInt(int position) { 18869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setNextSelectedPositionInt(position); 1887f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron boolean awakeScrollbars = false; 1888f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron 1889f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron final int selectedPosition = mSelectedPosition; 1890f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron 1891f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron if (selectedPosition >= 0) { 1892f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron if (position == selectedPosition - 1) { 1893f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron awakeScrollbars = true; 1894f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron } else if (position == selectedPosition + 1) { 1895f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron awakeScrollbars = true; 1896f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron } 1897f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron } 1898f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron 18999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project layoutChildren(); 1900f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron 1901f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron if (awakeScrollbars) { 1902f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron awakenScrollBars(); 1903f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron } 19049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 19079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Find a position that can be selected (i.e., is not a separator). 19089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 19099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position The starting position to look at. 19109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param lookDown Whether to look down for other positions. 19119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The next selectable position starting at position and then searching either up or 19129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * down. Returns {@link #INVALID_POSITION} if nothing can be found. 19139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 19149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 19159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int lookForSelectablePosition(int position, boolean lookDown) { 19169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final ListAdapter adapter = mAdapter; 19179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (adapter == null || isInTouchMode()) { 19189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return INVALID_POSITION; 19199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = adapter.getCount(); 19229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mAreAllItemsSelectable) { 19239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lookDown) { 19249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project position = Math.max(0, position); 19259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while (position < count && !adapter.isEnabled(position)) { 19269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project position++; 19279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 19299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project position = Math.min(position, count - 1); 19309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while (position >= 0 && !adapter.isEnabled(position)) { 19319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project position--; 19329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (position < 0 || position >= count) { 19369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return INVALID_POSITION; 19379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return position; 19399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 19409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (position < 0 || position >= count) { 19419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return INVALID_POSITION; 19429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return position; 19449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 194775986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov @Override 194875986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { 194975986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov boolean populated = super.dispatchPopulateAccessibilityEvent(event); 195075986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov 1951d296fafab597a6597d9eb276abe6f6eb049e9f12Amith Yamasani // If the item count is less than 15 then subtract disabled items from the count and 1952d296fafab597a6597d9eb276abe6f6eb049e9f12Amith Yamasani // position. Otherwise ignore disabled items. 195375986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov if (!populated) { 195475986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov int itemCount = 0; 195575986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov int currentItemIndex = getSelectedItemPosition(); 195675986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov 195775986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov ListAdapter adapter = getAdapter(); 195875986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov if (adapter != null) { 1959d296fafab597a6597d9eb276abe6f6eb049e9f12Amith Yamasani final int count = adapter.getCount(); 1960d296fafab597a6597d9eb276abe6f6eb049e9f12Amith Yamasani if (count < 15) { 1961d296fafab597a6597d9eb276abe6f6eb049e9f12Amith Yamasani for (int i = 0; i < count; i++) { 1962d296fafab597a6597d9eb276abe6f6eb049e9f12Amith Yamasani if (adapter.isEnabled(i)) { 1963d296fafab597a6597d9eb276abe6f6eb049e9f12Amith Yamasani itemCount++; 1964d296fafab597a6597d9eb276abe6f6eb049e9f12Amith Yamasani } else if (i <= currentItemIndex) { 1965d296fafab597a6597d9eb276abe6f6eb049e9f12Amith Yamasani currentItemIndex--; 1966d296fafab597a6597d9eb276abe6f6eb049e9f12Amith Yamasani } 196775986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov } 1968d296fafab597a6597d9eb276abe6f6eb049e9f12Amith Yamasani } else { 1969d296fafab597a6597d9eb276abe6f6eb049e9f12Amith Yamasani itemCount = count; 197075986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov } 197175986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov } 197275986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov 197375986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov event.setItemCount(itemCount); 197475986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov event.setCurrentItemIndex(currentItemIndex); 197575986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov } 197675986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov 197775986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov return populated; 197875986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov } 197975986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganov 19809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 19819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * setSelectionAfterHeaderView set the selection to be the first list item 19829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * after the header views. 19839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 19849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setSelectionAfterHeaderView() { 19859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = mHeaderViewInfos.size(); 19869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (count > 0) { 19879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNextSelectedPosition = 0; 19889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 19899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mAdapter != null) { 19929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelection(count); 19939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 19949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNextSelectedPosition = count; 19959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutMode = LAYOUT_SET_SELECTION; 19969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 20009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 20019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean dispatchKeyEvent(KeyEvent event) { 20029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Dispatch in the normal way 20039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean handled = super.dispatchKeyEvent(event); 20049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!handled) { 20059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If we didn't handle it... 20069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View focused = getFocusedChild(); 20079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (focused != null && event.getAction() == KeyEvent.ACTION_DOWN) { 20089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // ... and our focused child didn't handle it 20099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // ... give it to ourselves so we can scroll if necessary 20109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handled = onKeyDown(event.getKeyCode(), event); 20119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return handled; 20149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 20169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 20179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean onKeyDown(int keyCode, KeyEvent event) { 20189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return commonKey(keyCode, 1, event); 20199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 20219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 20229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 20239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return commonKey(keyCode, repeatCount, event); 20249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 20269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 20279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean onKeyUp(int keyCode, KeyEvent event) { 20289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return commonKey(keyCode, 1, event); 20299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 20319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean commonKey(int keyCode, int count, KeyEvent event) { 20329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mAdapter == null) { 20339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 20349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 20369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mDataChanged) { 20379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project layoutChildren(); 20389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 20409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean handled = false; 20419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int action = event.getAction(); 20429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 20439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (action != KeyEvent.ACTION_UP) { 20449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mSelectedPosition < 0) { 20459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (keyCode) { 20469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_DPAD_UP: 20479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_DPAD_DOWN: 20489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_DPAD_CENTER: 20499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_ENTER: 20509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_SPACE: 20519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (resurrectSelection()) { 20529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 20539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (keyCode) { 20579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_DPAD_UP: 20589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!event.isAltPressed()) { 20599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while (count > 0) { 20609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handled = arrowScroll(FOCUS_UP); 20619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project count--; 20629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 20649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handled = fullScroll(FOCUS_UP); 20659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 20679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 20689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_DPAD_DOWN: 20699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!event.isAltPressed()) { 20709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while (count > 0) { 20719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handled = arrowScroll(FOCUS_DOWN); 20729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project count--; 20739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 20759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handled = fullScroll(FOCUS_DOWN); 20769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 20789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 20799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_DPAD_LEFT: 20809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handled = handleHorizontalFocusWithinListItem(View.FOCUS_LEFT); 20819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 20829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_DPAD_RIGHT: 20839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handled = handleHorizontalFocusWithinListItem(View.FOCUS_RIGHT); 20849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 20859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 20869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_DPAD_CENTER: 20879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_ENTER: 20889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mItemCount > 0 && event.getRepeatCount() == 0) { 20899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project keyPressed(); 20909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handled = true; 20929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 20939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 20949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_SPACE: 20959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mPopup == null || !mPopup.isShowing()) { 20969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!event.isShiftPressed()) { 20979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project pageScroll(FOCUS_DOWN); 20989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 20999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project pageScroll(FOCUS_UP); 21009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handled = true; 21029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 21049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 21079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!handled) { 21089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handled = sendToTextFilter(keyCode, count, event); 21099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 21119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (handled) { 21129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 21139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 21149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (action) { 21159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.ACTION_DOWN: 21169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return super.onKeyDown(keyCode, event); 21179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 21189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.ACTION_UP: 21199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return super.onKeyUp(keyCode, event); 21209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 21219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.ACTION_MULTIPLE: 21229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return super.onKeyMultiple(keyCode, count, event); 21239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 21249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project default: // shouldn't happen 21259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 21269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 21309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 21319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Scrolls up or down by the number of items currently present on screen. 21329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 21339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param direction either {@link View#FOCUS_UP} or {@link View#FOCUS_DOWN} 21349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return whether selection was moved 21359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 21369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean pageScroll(int direction) { 21379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int nextPage = -1; 21389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean down = false; 21399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 21409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (direction == FOCUS_UP) { 21419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nextPage = Math.max(0, mSelectedPosition - getChildCount() - 1); 21429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (direction == FOCUS_DOWN) { 21439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nextPage = Math.min(mItemCount - 1, mSelectedPosition + getChildCount() - 1); 21449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project down = true; 21459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 21479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (nextPage >= 0) { 21489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int position = lookForSelectablePosition(nextPage, down); 21499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (position >= 0) { 21509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutMode = LAYOUT_SPECIFIC; 21519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSpecificTop = mPaddingTop + getVerticalFadingEdgeLength(); 21529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 21539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (down && position > mItemCount - getChildCount()) { 21549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutMode = LAYOUT_FORCE_BOTTOM; 21559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 21579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!down && position < getChildCount()) { 21589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutMode = LAYOUT_FORCE_TOP; 21599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 21619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelectionInt(position); 21629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invokeOnItemScrollListener(); 2163f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron if (!awakenScrollBars()) { 2164f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron invalidate(); 2165f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron } 21669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 21679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 21689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 21719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 21729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 21749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 21759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Go to the last or first item if possible (not worrying about panning across or navigating 21769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * within the internal focus of the currently selected item.) 21779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 21789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param direction either {@link View#FOCUS_UP} or {@link View#FOCUS_DOWN} 21799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 21809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return whether selection was moved 21819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 21829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean fullScroll(int direction) { 21839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean moved = false; 21849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (direction == FOCUS_UP) { 21859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mSelectedPosition != 0) { 21869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int position = lookForSelectablePosition(0, true); 21879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (position >= 0) { 21889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutMode = LAYOUT_FORCE_TOP; 21899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelectionInt(position); 21909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invokeOnItemScrollListener(); 21919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project moved = true; 21939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (direction == FOCUS_DOWN) { 21959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mSelectedPosition < mItemCount - 1) { 21969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int position = lookForSelectablePosition(mItemCount - 1, true); 21979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (position >= 0) { 21989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutMode = LAYOUT_FORCE_BOTTOM; 21999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelectionInt(position); 22009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invokeOnItemScrollListener(); 22019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project moved = true; 22039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2206f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron if (moved && !awakenScrollBars()) { 2207f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron awakenScrollBars(); 22089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invalidate(); 22099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 22119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return moved; 22129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 22149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 22159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * To avoid horizontal focus searches changing the selected item, we 22169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * manually focus search within the selected item (as applicable), and 22179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * prevent focus from jumping to something within another item. 22189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param direction one of {View.FOCUS_LEFT, View.FOCUS_RIGHT} 22199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Whether this consumes the key event. 22209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 22219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean handleHorizontalFocusWithinListItem(int direction) { 22229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (direction != View.FOCUS_LEFT && direction != View.FOCUS_RIGHT) { 2223304eefa6a33da9b75b4075cc7eb170cf4ced4cdbRomain Guy throw new IllegalArgumentException("direction must be one of" 2224304eefa6a33da9b75b4075cc7eb170cf4ced4cdbRomain Guy + " {View.FOCUS_LEFT, View.FOCUS_RIGHT}"); 22259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 22279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int numChildren = getChildCount(); 22289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mItemsCanFocus && numChildren > 0 && mSelectedPosition != INVALID_POSITION) { 22299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View selectedView = getSelectedView(); 2230304eefa6a33da9b75b4075cc7eb170cf4ced4cdbRomain Guy if (selectedView != null && selectedView.hasFocus() && 2231304eefa6a33da9b75b4075cc7eb170cf4ced4cdbRomain Guy selectedView instanceof ViewGroup) { 2232304eefa6a33da9b75b4075cc7eb170cf4ced4cdbRomain Guy 22339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View currentFocus = selectedView.findFocus(); 22349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View nextFocus = FocusFinder.getInstance().findNextFocus( 2235304eefa6a33da9b75b4075cc7eb170cf4ced4cdbRomain Guy (ViewGroup) selectedView, currentFocus, direction); 22369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (nextFocus != null) { 22379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // do the math to get interesting rect in next focus' coordinates 22389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project currentFocus.getFocusedRect(mTempRect); 22399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project offsetDescendantRectToMyCoords(currentFocus, mTempRect); 22409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project offsetRectIntoDescendantCoords(nextFocus, mTempRect); 22419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (nextFocus.requestFocus(direction, mTempRect)) { 22429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 22439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // we are blocking the key from being handled (by returning true) 22469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if the global result is going to be some other view within this 22479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // list. this is to acheive the overall goal of having 22489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // horizontal d-pad navigation remain in the current item. 2249304eefa6a33da9b75b4075cc7eb170cf4ced4cdbRomain Guy final View globalNextFocus = FocusFinder.getInstance().findNextFocus( 2250304eefa6a33da9b75b4075cc7eb170cf4ced4cdbRomain Guy (ViewGroup) getRootView(), currentFocus, direction); 22519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (globalNextFocus != null) { 22529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return isViewAncestorOf(globalNextFocus, this); 22539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 22579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 22599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 22609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Scrolls to the next or previous item if possible. 22619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 22629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param direction either {@link View#FOCUS_UP} or {@link View#FOCUS_DOWN} 22639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 22649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return whether selection was moved 22659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 22669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean arrowScroll(int direction) { 22679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 22689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInLayout = true; 22699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean handled = arrowScrollImpl(direction); 22709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (handled) { 22719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project playSoundEffect(SoundEffectConstants.getContantForFocusDirection(direction)); 22729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return handled; 22749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } finally { 22759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInLayout = false; 22769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 22799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 22809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Handle an arrow scroll going up or down. Take into account whether items are selectable, 22819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * whether there are focusable items etc. 22829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 22839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param direction Either {@link android.view.View#FOCUS_UP} or {@link android.view.View#FOCUS_DOWN}. 22849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Whether any scrolling, selection or focus change occured. 22859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 22869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean arrowScrollImpl(int direction) { 22879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (getChildCount() <= 0) { 22889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 22899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 22919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View selectedView = getSelectedView(); 22929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 22939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int nextSelectedPosition = lookForSelectablePositionOnScreen(direction); 22949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int amountToScroll = amountToScroll(direction, nextSelectedPosition); 22959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 22969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if we are moving focus, we may OVERRIDE the default behavior 22979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final ArrowScrollFocusResult focusResult = mItemsCanFocus ? arrowScrollFocused(direction) : null; 22989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (focusResult != null) { 22999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nextSelectedPosition = focusResult.getSelectedPosition(); 23009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project amountToScroll = focusResult.getAmountToScroll(); 23019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 23039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean needToRedraw = focusResult != null; 23049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (nextSelectedPosition != INVALID_POSITION) { 23059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handleNewSelectionChange(selectedView, direction, nextSelectedPosition, focusResult != null); 23069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelectedPositionInt(nextSelectedPosition); 23079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setNextSelectedPositionInt(nextSelectedPosition); 23089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedView = getSelectedView(); 23099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mItemsCanFocus && focusResult == null) { 23109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // there was no new view found to take focus, make sure we 23119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // don't leave focus with the old selection 23129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View focused = getFocusedChild(); 23139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (focused != null) { 23149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project focused.clearFocus(); 23159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project needToRedraw = true; 23189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkSelectionChanged(); 23199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 23219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (amountToScroll > 0) { 23229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project scrollListItemsBy((direction == View.FOCUS_UP) ? amountToScroll : -amountToScroll); 23239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project needToRedraw = true; 23249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 23269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if we didn't find a new focusable, make sure any existing focused 23279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // item that was panned off screen gives up focus. 23289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mItemsCanFocus && (focusResult == null) 23299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project && selectedView != null && selectedView.hasFocus()) { 23309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View focused = selectedView.findFocus(); 23319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (distanceToView(focused) > 0) { 23329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project focused.clearFocus(); 23339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 23369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if the current selection is panned off, we need to remove the selection 23379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (nextSelectedPosition == INVALID_POSITION && selectedView != null 23389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project && !isViewAncestorOf(selectedView, this)) { 23399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedView = null; 23409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project hideSelector(); 23419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 23429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // but we don't want to set the ressurect position (that would make subsequent 23439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // unhandled key events bring back the item we just scrolled off!) 23449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mResurrectToPosition = INVALID_POSITION; 23459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 23479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (needToRedraw) { 23489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (selectedView != null) { 23499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project positionSelector(selectedView); 23509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectedTop = selectedView.getTop(); 23519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2352f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron if (!awakenScrollBars()) { 2353f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron invalidate(); 2354f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron } 23559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invokeOnItemScrollListener(); 23569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 23579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 23599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 23609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 23629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 23639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * When selection changes, it is possible that the previously selected or the 23649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * next selected item will change its size. If so, we need to offset some folks, 23659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and re-layout the items as appropriate. 23669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 23679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param selectedView The currently selected view (before changing selection). 23689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * should be <code>null</code> if there was no previous selection. 23699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param direction Either {@link android.view.View#FOCUS_UP} or 23709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.view.View#FOCUS_DOWN}. 23719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param newSelectedPosition The position of the next selection. 23729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param newFocusAssigned whether new focus was assigned. This matters because 23739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * when something has focus, we don't want to show selection (ugh). 23749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 23759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void handleNewSelectionChange(View selectedView, int direction, int newSelectedPosition, 23769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean newFocusAssigned) { 23779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (newSelectedPosition == INVALID_POSITION) { 23789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("newSelectedPosition needs to be valid"); 23799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 23819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // whether or not we are moving down or up, we want to preserve the 23829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // top of whatever view is on top: 23839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // - moving down: the view that had selection 23849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // - moving up: the view that is getting selection 23859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View topView; 23869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View bottomView; 23879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int topViewIndex, bottomViewIndex; 23889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean topSelected = false; 23899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int selectedIndex = mSelectedPosition - mFirstPosition; 23909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int nextSelectedIndex = newSelectedPosition - mFirstPosition; 23919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (direction == View.FOCUS_UP) { 23929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project topViewIndex = nextSelectedIndex; 23939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bottomViewIndex = selectedIndex; 23949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project topView = getChildAt(topViewIndex); 23959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bottomView = selectedView; 23969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project topSelected = true; 23979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 23989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project topViewIndex = selectedIndex; 23999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bottomViewIndex = nextSelectedIndex; 24009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project topView = selectedView; 24019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bottomView = getChildAt(bottomViewIndex); 24029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 24049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int numChildren = getChildCount(); 24059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 24069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // start with top view: is it changing size? 24079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (topView != null) { 24089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project topView.setSelected(!newFocusAssigned && topSelected); 24099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureAndAdjustDown(topView, topViewIndex, numChildren); 24109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 24129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // is the bottom view changing size? 24139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (bottomView != null) { 24149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bottomView.setSelected(!newFocusAssigned && !topSelected); 24159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureAndAdjustDown(bottomView, bottomViewIndex, numChildren); 24169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 24199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 24209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Re-measure a child, and if its height changes, lay it out preserving its 24219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * top, and adjust the children below it appropriately. 24229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child The child 24239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childIndex The view group index of the child. 24249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param numChildren The number of children in the view group. 24259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 24269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void measureAndAdjustDown(View child, int childIndex, int numChildren) { 24279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int oldHeight = child.getHeight(); 24289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureItem(child); 24299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getMeasuredHeight() != oldHeight) { 24309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // lay out the view, preserving its top 24319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project relayoutMeasuredItem(child); 24329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 24339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // adjust views below appropriately 24349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int heightDelta = child.getMeasuredHeight() - oldHeight; 24359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = childIndex + 1; i < numChildren; i++) { 24369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project getChildAt(i).offsetTopAndBottom(heightDelta); 24379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 24419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 24429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Measure a particular list child. 24439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * TODO: unify with setUpChild. 24449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child The child. 24459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 24469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void measureItem(View child) { 24479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ViewGroup.LayoutParams p = child.getLayoutParams(); 24489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (p == null) { 24499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project p = new ViewGroup.LayoutParams( 2450980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy ViewGroup.LayoutParams.MATCH_PARENT, 24519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ViewGroup.LayoutParams.WRAP_CONTENT); 24529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 24549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childWidthSpec = ViewGroup.getChildMeasureSpec(mWidthMeasureSpec, 24559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mListPadding.left + mListPadding.right, p.width); 24569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int lpHeight = p.height; 24579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childHeightSpec; 24589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lpHeight > 0) { 24599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeightSpec = MeasureSpec.makeMeasureSpec(lpHeight, MeasureSpec.EXACTLY); 24609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 24619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeightSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED); 24629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure(childWidthSpec, childHeightSpec); 24649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 24669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 24679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Layout a child that has been measured, preserving its top position. 24689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * TODO: unify with setUpChild. 24699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child The child. 24709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 24719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void relayoutMeasuredItem(View child) { 24729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int w = child.getMeasuredWidth(); 24739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int h = child.getMeasuredHeight(); 24749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childLeft = mListPadding.left; 24759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childRight = childLeft + w; 24769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childTop = child.getTop(); 24779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childBottom = childTop + h; 24789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.layout(childLeft, childTop, childRight, childBottom); 24799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 24819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 24829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The amount to preview next items when arrow srolling. 24839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 24849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int getArrowScrollPreviewLength() { 24859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return Math.max(MIN_SCROLL_PREVIEW_PIXELS, getVerticalFadingEdgeLength()); 24869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 24889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 24899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Determine how much we need to scroll in order to get the next selected view 24909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * visible, with a fading edge showing below as applicable. The amount is 24919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * capped at {@link #getMaxScrollAmount()} . 24929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 24939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param direction either {@link android.view.View#FOCUS_UP} or 24949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.view.View#FOCUS_DOWN}. 24959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param nextSelectedPosition The position of the next selection, or 24969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #INVALID_POSITION} if there is no next selectable position 24979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The amount to scroll. Note: this is always positive! Direction 24989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * needs to be taken into account when actually scrolling. 24999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 25009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int amountToScroll(int direction, int nextSelectedPosition) { 25019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int listBottom = getHeight() - mListPadding.bottom; 25029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int listTop = mListPadding.top; 25039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int numChildren = getChildCount(); 25059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (direction == View.FOCUS_DOWN) { 25079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int indexToMakeVisible = numChildren - 1; 25089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (nextSelectedPosition != INVALID_POSITION) { 25099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project indexToMakeVisible = nextSelectedPosition - mFirstPosition; 25109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int positionToMakeVisible = mFirstPosition + indexToMakeVisible; 25139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View viewToMakeVisible = getChildAt(indexToMakeVisible); 25149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int goalBottom = listBottom; 25169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (positionToMakeVisible < mItemCount - 1) { 25179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project goalBottom -= getArrowScrollPreviewLength(); 25189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (viewToMakeVisible.getBottom() <= goalBottom) { 25219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // item is fully visible. 25229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 25239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (nextSelectedPosition != INVALID_POSITION 25269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project && (goalBottom - viewToMakeVisible.getTop()) >= getMaxScrollAmount()) { 25279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // item already has enough of it visible, changing selection is good enough 25289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 25299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int amountToScroll = (viewToMakeVisible.getBottom() - goalBottom); 25329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((mFirstPosition + numChildren) == mItemCount) { 25349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // last is last in list -> make sure we don't scroll past it 25359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int max = getChildAt(numChildren - 1).getBottom() - listBottom; 25369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project amountToScroll = Math.min(amountToScroll, max); 25379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return Math.min(amountToScroll, getMaxScrollAmount()); 25409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 25419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int indexToMakeVisible = 0; 25429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (nextSelectedPosition != INVALID_POSITION) { 25439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project indexToMakeVisible = nextSelectedPosition - mFirstPosition; 25449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int positionToMakeVisible = mFirstPosition + indexToMakeVisible; 25469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View viewToMakeVisible = getChildAt(indexToMakeVisible); 25479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int goalTop = listTop; 25489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (positionToMakeVisible > 0) { 25499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project goalTop += getArrowScrollPreviewLength(); 25509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (viewToMakeVisible.getTop() >= goalTop) { 25529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // item is fully visible. 25539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 25549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (nextSelectedPosition != INVALID_POSITION && 25579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (viewToMakeVisible.getBottom() - goalTop) >= getMaxScrollAmount()) { 25589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // item already has enough of it visible, changing selection is good enough 25599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 25609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int amountToScroll = (goalTop - viewToMakeVisible.getTop()); 25639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mFirstPosition == 0) { 25649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // first is first in list -> make sure we don't scroll past it 25659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int max = listTop - getChildAt(0).getTop(); 25669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project amountToScroll = Math.min(amountToScroll, max); 25679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return Math.min(amountToScroll, getMaxScrollAmount()); 25699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 25739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Holds results of focus aware arrow scrolling. 25749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 25759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static private class ArrowScrollFocusResult { 25769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mSelectedPosition; 25779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mAmountToScroll; 25789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 25809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * How {@link android.widget.ListView#arrowScrollFocused} returns its values. 25819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 25829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void populate(int selectedPosition, int amountToScroll) { 25839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectedPosition = selectedPosition; 25849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mAmountToScroll = amountToScroll; 25859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getSelectedPosition() { 25889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mSelectedPosition; 25899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getAmountToScroll() { 25929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mAmountToScroll; 25939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 25979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param direction either {@link android.view.View#FOCUS_UP} or 25989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.view.View#FOCUS_DOWN}. 25999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The position of the next selectable position of the views that 26009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * are currently visible, taking into account the fact that there might 26019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * be no selection. Returns {@link #INVALID_POSITION} if there is no 26029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * selectable view on screen in the given direction. 26039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 26049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int lookForSelectablePositionOnScreen(int direction) { 26059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int firstPosition = mFirstPosition; 26069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (direction == View.FOCUS_DOWN) { 26079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int startPos = (mSelectedPosition != INVALID_POSITION) ? 26089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectedPosition + 1 : 26099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project firstPosition; 26109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (startPos >= mAdapter.getCount()) { 26119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return INVALID_POSITION; 26129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 26139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (startPos < firstPosition) { 26149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project startPos = firstPosition; 26159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 26169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 26179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int lastVisiblePos = getLastVisiblePosition(); 26189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final ListAdapter adapter = getAdapter(); 26199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int pos = startPos; pos <= lastVisiblePos; pos++) { 26209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (adapter.isEnabled(pos) 26219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project && getChildAt(pos - firstPosition).getVisibility() == View.VISIBLE) { 26229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return pos; 26239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 26249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 26259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 26269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int last = firstPosition + getChildCount() - 1; 26279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int startPos = (mSelectedPosition != INVALID_POSITION) ? 26289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectedPosition - 1 : 26299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project firstPosition + getChildCount() - 1; 26309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (startPos < 0) { 26319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return INVALID_POSITION; 26329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 26339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (startPos > last) { 26349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project startPos = last; 26359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 26369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 26379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final ListAdapter adapter = getAdapter(); 26389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int pos = startPos; pos >= firstPosition; pos--) { 26399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (adapter.isEnabled(pos) 26409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project && getChildAt(pos - firstPosition).getVisibility() == View.VISIBLE) { 26419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return pos; 26429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 26439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 26449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 26459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return INVALID_POSITION; 26469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 26479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 26489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 26499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Do an arrow scroll based on focus searching. If a new view is 26509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * given focus, return the selection delta and amount to scroll via 26519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * an {@link ArrowScrollFocusResult}, otherwise, return null. 26529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 26539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param direction either {@link android.view.View#FOCUS_UP} or 26549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.view.View#FOCUS_DOWN}. 26559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The result if focus has changed, or <code>null</code>. 26569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 26579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private ArrowScrollFocusResult arrowScrollFocused(final int direction) { 26589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View selectedView = getSelectedView(); 26599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View newFocus; 26609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (selectedView != null && selectedView.hasFocus()) { 26619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View oldFocus = selectedView.findFocus(); 26629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project newFocus = FocusFinder.getInstance().findNextFocus(this, oldFocus, direction); 26639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 26649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (direction == View.FOCUS_DOWN) { 26659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean topFadingEdgeShowing = (mFirstPosition > 0); 26669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int listTop = mListPadding.top + 26679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (topFadingEdgeShowing ? getArrowScrollPreviewLength() : 0); 26689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int ySearchPoint = 26699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (selectedView != null && selectedView.getTop() > listTop) ? 26709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedView.getTop() : 26719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project listTop; 26729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTempRect.set(0, ySearchPoint, 0, ySearchPoint); 26739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 26749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean bottomFadingEdgeShowing = 26759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (mFirstPosition + getChildCount() - 1) < mItemCount; 26769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int listBottom = getHeight() - mListPadding.bottom - 26779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (bottomFadingEdgeShowing ? getArrowScrollPreviewLength() : 0); 26789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int ySearchPoint = 26799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (selectedView != null && selectedView.getBottom() < listBottom) ? 26809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedView.getBottom() : 26819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project listBottom; 26829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTempRect.set(0, ySearchPoint, 0, ySearchPoint); 26839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 26849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project newFocus = FocusFinder.getInstance().findNextFocusFromRect(this, mTempRect, direction); 26859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 26869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 26879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (newFocus != null) { 26889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int positionOfNewFocus = positionOfNewFocus(newFocus); 26899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 26909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if the focus change is in a different new position, make sure 26919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // we aren't jumping over another selectable position 26929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mSelectedPosition != INVALID_POSITION && positionOfNewFocus != mSelectedPosition) { 26939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int selectablePosition = lookForSelectablePositionOnScreen(direction); 26949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (selectablePosition != INVALID_POSITION && 26959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ((direction == View.FOCUS_DOWN && selectablePosition < positionOfNewFocus) || 26969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (direction == View.FOCUS_UP && selectablePosition > positionOfNewFocus))) { 26979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; 26989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 26999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 27019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int focusScroll = amountToScrollToNewFocus(direction, newFocus, positionOfNewFocus); 27029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 27039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int maxScrollAmount = getMaxScrollAmount(); 27049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (focusScroll < maxScrollAmount) { 27059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // not moving too far, safe to give next view focus 27069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project newFocus.requestFocus(direction); 27079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mArrowScrollFocusResult.populate(positionOfNewFocus, focusScroll); 27089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mArrowScrollFocusResult; 27099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (distanceToView(newFocus) < maxScrollAmount){ 27109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Case to consider: 27119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // too far to get entire next focusable on screen, but by going 27129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // max scroll amount, we are getting it at least partially in view, 27139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // so give it focus and scroll the max ammount. 27149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project newFocus.requestFocus(direction); 27159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mArrowScrollFocusResult.populate(positionOfNewFocus, maxScrollAmount); 27169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mArrowScrollFocusResult; 27179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; 27209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 27229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 27239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param newFocus The view that would have focus. 27249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the position that contains newFocus 27259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 27269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int positionOfNewFocus(View newFocus) { 27279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int numChildren = getChildCount(); 27289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < numChildren; i++) { 27299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getChildAt(i); 27309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (isViewAncestorOf(newFocus, child)) { 27319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mFirstPosition + i; 27329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("newFocus is not a child of any of the" 27359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + " children of the list!"); 27369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 27389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 27399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Return true if child is an ancestor of parent, (or equal to the parent). 27409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 27419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean isViewAncestorOf(View child, View parent) { 27429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == parent) { 27439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 27449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 27469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final ViewParent theParent = child.getParent(); 27479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (theParent instanceof ViewGroup) && isViewAncestorOf((View) theParent, parent); 27489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 27509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 27519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Determine how much we need to scroll in order to get newFocus in view. 27529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param direction either {@link android.view.View#FOCUS_UP} or 27539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.view.View#FOCUS_DOWN}. 27549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param newFocus The view that would take focus. 27559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param positionOfNewFocus The position of the list item containing newFocus 27569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The amount to scroll. Note: this is always positive! Direction 27579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * needs to be taken into account when actually scrolling. 27589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 27599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int amountToScrollToNewFocus(int direction, View newFocus, int positionOfNewFocus) { 27609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int amountToScroll = 0; 27619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project newFocus.getDrawingRect(mTempRect); 27629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project offsetDescendantRectToMyCoords(newFocus, mTempRect); 27639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (direction == View.FOCUS_UP) { 27649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mTempRect.top < mListPadding.top) { 27659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project amountToScroll = mListPadding.top - mTempRect.top; 27669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (positionOfNewFocus > 0) { 27679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project amountToScroll += getArrowScrollPreviewLength(); 27689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 27719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int listBottom = getHeight() - mListPadding.bottom; 27729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mTempRect.bottom > listBottom) { 27739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project amountToScroll = mTempRect.bottom - listBottom; 27749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (positionOfNewFocus < mItemCount - 1) { 27759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project amountToScroll += getArrowScrollPreviewLength(); 27769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return amountToScroll; 27809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 27829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 27839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Determine the distance to the nearest edge of a view in a particular 2784fd3ddfa6f0559eb29eea179690144a7357c34b3dGilles Debunne * direction. 2785fd3ddfa6f0559eb29eea179690144a7357c34b3dGilles Debunne * 27869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param descendant A descendant of this list. 27879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The distance, or 0 if the nearest edge is already on screen. 27889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 27899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int distanceToView(View descendant) { 27909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int distance = 0; 27919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project descendant.getDrawingRect(mTempRect); 27929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project offsetDescendantRectToMyCoords(descendant, mTempRect); 27939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int listBottom = mBottom - mTop - mListPadding.bottom; 27949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mTempRect.bottom < mListPadding.top) { 27959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project distance = mListPadding.top - mTempRect.bottom; 27969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (mTempRect.top > listBottom) { 27979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project distance = mTempRect.top - listBottom; 27989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return distance; 28009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 28019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 28029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 28039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 28049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Scroll the children by amount, adding a view at the end and removing 28059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * views that fall off as necessary. 28069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 28079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param amount The amount (positive or negative) to scroll. 28089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 28099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void scrollListItemsBy(int amount) { 28109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project offsetChildrenTopAndBottom(amount); 28119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 28129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int listBottom = getHeight() - mListPadding.bottom; 28139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int listTop = mListPadding.top; 2814c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project final AbsListView.RecycleBin recycleBin = mRecycler; 28159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 28169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (amount < 0) { 28179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // shifted items up 28189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 28199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // may need to pan views into the bottom space 28209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int numChildren = getChildCount(); 28219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View last = getChildAt(numChildren - 1); 28229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while (last.getBottom() < listBottom) { 28239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int lastVisiblePosition = mFirstPosition + numChildren - 1; 28249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lastVisiblePosition < mItemCount - 1) { 28259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project last = addViewBelow(last, lastVisiblePosition); 28269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project numChildren++; 28279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 28289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 28299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 28309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 28319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 28329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // may have brought in the last child of the list that is skinnier 28339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // than the fading edge, thereby leaving space at the end. need 28349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // to shift back 28359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (last.getBottom() < listBottom) { 28369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project offsetChildrenTopAndBottom(listBottom - last.getBottom()); 28379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 28389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 28399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // top views may be panned off screen 28409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View first = getChildAt(0); 28419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while (first.getBottom() < listTop) { 2842c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project AbsListView.LayoutParams layoutParams = (LayoutParams) first.getLayoutParams(); 2843c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project if (recycleBin.shouldRecycleViewType(layoutParams.viewType)) { 28442d51bff2b6597804307d8883a071ff18adc2644aRomain Guy detachViewFromParent(first); 2845c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project recycleBin.addScrapView(first); 2846c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project } else { 28472d51bff2b6597804307d8883a071ff18adc2644aRomain Guy removeViewInLayout(first); 2848c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project } 28499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project first = getChildAt(0); 28509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFirstPosition++; 28519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 28529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 28539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // shifted items down 28549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View first = getChildAt(0); 28559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 28569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // may need to pan views into top 28579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while ((first.getTop() > listTop) && (mFirstPosition > 0)) { 28589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project first = addViewAbove(first, mFirstPosition); 28599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFirstPosition--; 28609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 28619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 28629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // may have brought the very first child of the list in too far and 28639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // need to shift it back 28649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (first.getTop() > listTop) { 28659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project offsetChildrenTopAndBottom(listTop - first.getTop()); 28669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 28679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 28689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int lastIndex = getChildCount() - 1; 28699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View last = getChildAt(lastIndex); 28709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 28719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // bottom view may be panned off screen 28729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while (last.getTop() > listBottom) { 2873c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project AbsListView.LayoutParams layoutParams = (LayoutParams) last.getLayoutParams(); 2874c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project if (recycleBin.shouldRecycleViewType(layoutParams.viewType)) { 28752d51bff2b6597804307d8883a071ff18adc2644aRomain Guy detachViewFromParent(last); 2876c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project recycleBin.addScrapView(last); 2877c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project } else { 28782d51bff2b6597804307d8883a071ff18adc2644aRomain Guy removeViewInLayout(last); 2879c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project } 28809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project last = getChildAt(--lastIndex); 28819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 28829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 28839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 28849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 28859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private View addViewAbove(View theView, int position) { 28869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int abovePosition = position - 1; 288721875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy View view = obtainView(abovePosition, mIsScrap); 28889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int edgeOfNewChild = theView.getTop() - mDividerHeight; 288921875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy setupChild(view, abovePosition, edgeOfNewChild, false, mListPadding.left, 289021875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy false, mIsScrap[0]); 28919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return view; 28929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 28939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 28949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private View addViewBelow(View theView, int position) { 28959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int belowPosition = position + 1; 289621875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy View view = obtainView(belowPosition, mIsScrap); 28979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int edgeOfNewChild = theView.getBottom() + mDividerHeight; 289821875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy setupChild(view, belowPosition, edgeOfNewChild, true, mListPadding.left, 289921875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy false, mIsScrap[0]); 29009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return view; 29019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 29029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 29039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 29049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates that the views created by the ListAdapter can contain focusable 29059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * items. 29069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 29079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param itemsCanFocus true if items can get focus, false otherwise 29089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 29099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setItemsCanFocus(boolean itemsCanFocus) { 29109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mItemsCanFocus = itemsCanFocus; 29119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!itemsCanFocus) { 29129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setDescendantFocusability(ViewGroup.FOCUS_BLOCK_DESCENDANTS); 29139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 29149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 29159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 29169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 29179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Whether the views created by the ListAdapter can contain focusable 29189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * items. 29199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 29209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean getItemsCanFocus() { 29219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mItemsCanFocus; 29229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 29239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 29242d6afea6813be3081138874cf879ac8b0860e4efRomain Guy /** 29252d6afea6813be3081138874cf879ac8b0860e4efRomain Guy * @hide Pending API council approval. 29262d6afea6813be3081138874cf879ac8b0860e4efRomain Guy */ 29279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 292824443ea3992e372e47daa50266b0f2ec38cac388Romain Guy public boolean isOpaque() { 29298f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy return (mCachingStarted && mIsCacheColorOpaque && mDividerIsOpaque && 29308f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy hasOpaqueScrollbars()) || super.isOpaque(); 293124443ea3992e372e47daa50266b0f2ec38cac388Romain Guy } 293224443ea3992e372e47daa50266b0f2ec38cac388Romain Guy 293324443ea3992e372e47daa50266b0f2ec38cac388Romain Guy @Override 293424443ea3992e372e47daa50266b0f2ec38cac388Romain Guy public void setCacheColorHint(int color) { 29358f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy final boolean opaque = (color >>> 24) == 0xFF; 29368f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy mIsCacheColorOpaque = opaque; 29378f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy if (opaque) { 2938a02903fbee6725563da4472bd120f844e9d5518cRomain Guy if (mDividerPaint == null) { 2939a02903fbee6725563da4472bd120f844e9d5518cRomain Guy mDividerPaint = new Paint(); 2940a02903fbee6725563da4472bd120f844e9d5518cRomain Guy } 29418f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy mDividerPaint.setColor(color); 29428f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy } 294324443ea3992e372e47daa50266b0f2ec38cac388Romain Guy super.setCacheColorHint(color); 294424443ea3992e372e47daa50266b0f2ec38cac388Romain Guy } 29459d32d24dbd8a015c9d5c44ed4901d5a666eb8e7fAdam Powell 294624443ea3992e372e47daa50266b0f2ec38cac388Romain Guy @Override 29479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void dispatchDraw(Canvas canvas) { 29489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Draw the dividers 29499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int dividerHeight = mDividerHeight; 2950bfb5d4b93bb739a012ecec604473838c1343c88aAdam Powell final boolean drawDividers = dividerHeight > 0 && mDivider != null; 29519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 29529d32d24dbd8a015c9d5c44ed4901d5a666eb8e7fAdam Powell if (drawDividers) { 29539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Only modify the top and bottom in the loop, we set the left and right here 29549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final Rect bounds = mTempRect; 29559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bounds.left = mPaddingLeft; 29569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bounds.right = mRight - mLeft - mPaddingRight; 29579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 29589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getChildCount(); 29599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int headerCount = mHeaderViewInfos.size(); 2960bfb5d4b93bb739a012ecec604473838c1343c88aAdam Powell final int itemCount = mItemCount; 2961bfb5d4b93bb739a012ecec604473838c1343c88aAdam Powell final int footerLimit = itemCount - mFooterViewInfos.size() - 1; 29629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean headerDividers = mHeaderDividersEnabled; 29639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean footerDividers = mFooterDividersEnabled; 29649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int first = mFirstPosition; 29652bed22744281a093ee5e76eab531819f3c62b0bfRomain Guy final boolean areAllItemsSelectable = mAreAllItemsSelectable; 29662bed22744281a093ee5e76eab531819f3c62b0bfRomain Guy final ListAdapter adapter = mAdapter; 2967e32edc614e62ac874a969d3cc6bb1e0c0c3f2607Romain Guy // If the list is opaque *and* the background is not, we want to 2968e32edc614e62ac874a969d3cc6bb1e0c0c3f2607Romain Guy // fill a rect where the dividers would be for non-selectable items 2969e32edc614e62ac874a969d3cc6bb1e0c0c3f2607Romain Guy // If the list is opaque and the background is also opaque, we don't 2970e32edc614e62ac874a969d3cc6bb1e0c0c3f2607Romain Guy // need to draw anything since the background will do it for us 2971bfb5d4b93bb739a012ecec604473838c1343c88aAdam Powell final boolean fillForMissingDividers = drawDividers && isOpaque() && !super.isOpaque(); 2972e32edc614e62ac874a969d3cc6bb1e0c0c3f2607Romain Guy 2973e32edc614e62ac874a969d3cc6bb1e0c0c3f2607Romain Guy if (fillForMissingDividers && mDividerPaint == null && mIsCacheColorOpaque) { 2974a02903fbee6725563da4472bd120f844e9d5518cRomain Guy mDividerPaint = new Paint(); 2975e32edc614e62ac874a969d3cc6bb1e0c0c3f2607Romain Guy mDividerPaint.setColor(getCacheColorHint()); 2976a02903fbee6725563da4472bd120f844e9d5518cRomain Guy } 29778f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy final Paint paint = mDividerPaint; 29789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2979bfb5d4b93bb739a012ecec604473838c1343c88aAdam Powell final int listBottom = mBottom - mTop - mListPadding.bottom + mScrollY; 29809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mStackFromBottom) { 2981bfb5d4b93bb739a012ecec604473838c1343c88aAdam Powell int bottom = 0; 29820b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell 2983bfb5d4b93bb739a012ecec604473838c1343c88aAdam Powell final int scrollY = mScrollY; 29849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; i++) { 29859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((headerDividers || first + i >= headerCount) && 29869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (footerDividers || first + i < footerLimit)) { 29879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View child = getChildAt(i); 29889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bottom = child.getBottom(); 29892bed22744281a093ee5e76eab531819f3c62b0bfRomain Guy // Don't draw dividers next to items that are not enabled 29909d32d24dbd8a015c9d5c44ed4901d5a666eb8e7fAdam Powell if (drawDividers) { 29918f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy if ((areAllItemsSelectable || 29928f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy (adapter.isEnabled(first + i) && (i == count - 1 || 29938f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy adapter.isEnabled(first + i + 1))))) { 29948f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy bounds.top = bottom; 29958f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy bounds.bottom = bottom + dividerHeight; 29968f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy drawDivider(canvas, bounds, i); 2997e32edc614e62ac874a969d3cc6bb1e0c0c3f2607Romain Guy } else if (fillForMissingDividers) { 29988f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy bounds.top = bottom; 29998f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy bounds.bottom = bottom + dividerHeight; 30008f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy canvas.drawRect(bounds, paint); 30018f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy } 30029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 30069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int top; 30079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int listTop = mListPadding.top; 30089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3009bfb5d4b93bb739a012ecec604473838c1343c88aAdam Powell final int scrollY = mScrollY; 3010bfb5d4b93bb739a012ecec604473838c1343c88aAdam Powell 30119d32d24dbd8a015c9d5c44ed4901d5a666eb8e7fAdam Powell for (int i = 0; i < count; i++) { 30129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((headerDividers || first + i >= headerCount) && 30139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (footerDividers || first + i < footerLimit)) { 30149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View child = getChildAt(i); 30159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project top = child.getTop(); 30162bed22744281a093ee5e76eab531819f3c62b0bfRomain Guy // Don't draw dividers next to items that are not enabled 3017bfb5d4b93bb739a012ecec604473838c1343c88aAdam Powell if (drawDividers && top > listTop) { 30188f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy if ((areAllItemsSelectable || 30198f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy (adapter.isEnabled(first + i) && (i == count - 1 || 30208f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy adapter.isEnabled(first + i + 1))))) { 30218f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy bounds.top = top - dividerHeight; 30228f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy bounds.bottom = top; 30238f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy // Give the method the child ABOVE the divider, so we 30248f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy // subtract one from our child 30258f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy // position. Give -1 when there is no child above the 30268f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy // divider. 30278f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy drawDivider(canvas, bounds, i - 1); 3028e32edc614e62ac874a969d3cc6bb1e0c0c3f2607Romain Guy } else if (fillForMissingDividers) { 30298f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy bounds.top = top - dividerHeight; 30308f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy bounds.bottom = top; 30318f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy canvas.drawRect(bounds, paint); 30328f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy } 30339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3036bfb5d4b93bb739a012ecec604473838c1343c88aAdam Powell 30379d32d24dbd8a015c9d5c44ed4901d5a666eb8e7fAdam Powell if (count > 0 && scrollY > 0 && drawDividers) { 30389d32d24dbd8a015c9d5c44ed4901d5a666eb8e7fAdam Powell bounds.top = listBottom; 30399d32d24dbd8a015c9d5c44ed4901d5a666eb8e7fAdam Powell bounds.bottom = listBottom + dividerHeight; 30409d32d24dbd8a015c9d5c44ed4901d5a666eb8e7fAdam Powell drawDivider(canvas, bounds, -1); 3041bfb5d4b93bb739a012ecec604473838c1343c88aAdam Powell } 30429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 30459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Draw the indicators (these should be drawn above the dividers) and children 30469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.dispatchDraw(canvas); 30479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 30499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 30509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Draws a divider for the given child in the given bounds. 30519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 30529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param canvas The canvas to draw to. 30539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param bounds The bounds of the divider. 30549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childIndex The index of child (of the View) above the divider. 30559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This will be -1 if there is no child above the divider to be 30569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * drawn. 30579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 30589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void drawDivider(Canvas canvas, Rect bounds, int childIndex) { 30599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // This widget draws the same divider for all children 30609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final Drawable divider = mDivider; 30619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean clipDivider = mClipDivider; 30629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 30639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!clipDivider) { 30649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project divider.setBounds(bounds); 30659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 30669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project canvas.save(); 30679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project canvas.clipRect(bounds); 30689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 30709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project divider.draw(canvas); 30719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 30729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (clipDivider) { 30739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project canvas.restore(); 30749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 30779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 30789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the drawable that will be drawn between each item in the list. 30799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 30809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the current drawable drawn between list elements 30819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 30829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Drawable getDivider() { 30839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mDivider; 30849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 30869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 30879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sets the drawable that will be drawn between each item in the list. If the drawable does 30889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * not have an intrinsic height, you should also call {@link #setDividerHeight(int)} 30899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 30909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param divider The drawable to use. 30919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 30929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setDivider(Drawable divider) { 30939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (divider != null) { 30949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDividerHeight = divider.getIntrinsicHeight(); 30959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mClipDivider = divider instanceof ColorDrawable; 30969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 30979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDividerHeight = 0; 30989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mClipDivider = false; 30999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 31009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDivider = divider; 310124443ea3992e372e47daa50266b0f2ec38cac388Romain Guy mDividerIsOpaque = divider == null || divider.getOpacity() == PixelFormat.OPAQUE; 31029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayoutIfNecessary(); 31039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 31049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 31059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 31069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Returns the height of the divider that will be drawn between each item in the list. 31079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 31089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getDividerHeight() { 31099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mDividerHeight; 31109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 31119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 31129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 31139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sets the height of the divider that will be drawn between each item in the list. Calling 31149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * this will override the intrinsic height as set by {@link #setDivider(Drawable)} 31159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 31169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The new height of the divider in pixels. 31179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 31189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setDividerHeight(int height) { 31199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDividerHeight = height; 31209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayoutIfNecessary(); 31219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 31229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 31239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 31249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Enables or disables the drawing of the divider for header views. 31259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 31269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param headerDividersEnabled True to draw the headers, false otherwise. 31279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 31289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setFooterDividersEnabled(boolean) 31299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #addHeaderView(android.view.View) 31309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 31319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setHeaderDividersEnabled(boolean headerDividersEnabled) { 31329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mHeaderDividersEnabled = headerDividersEnabled; 31339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invalidate(); 31349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 31359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 31369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 31379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Enables or disables the drawing of the divider for footer views. 31389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 31399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param footerDividersEnabled True to draw the footers, false otherwise. 31409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 31419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setHeaderDividersEnabled(boolean) 31429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #addFooterView(android.view.View) 31439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 31449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setFooterDividersEnabled(boolean footerDividersEnabled) { 31459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFooterDividersEnabled = footerDividersEnabled; 31469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invalidate(); 31479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3148bfb5d4b93bb739a012ecec604473838c1343c88aAdam Powell 31499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 31509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onFocusChanged(boolean gainFocus, int direction, Rect previouslyFocusedRect) { 31519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.onFocusChanged(gainFocus, direction, previouslyFocusedRect); 31529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 31539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int closetChildIndex = -1; 31549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (gainFocus && previouslyFocusedRect != null) { 31559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project previouslyFocusedRect.offset(mScrollX, mScrollY); 31569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3157c854f281a1c330931a2a03eef802ad7d4521998eAdam Powell final ListAdapter adapter = mAdapter; 3158d7507834e73f32b4c82839036dc3897a1587e668Adam Powell // Don't cache the result of getChildCount or mFirstPosition here, 3159d7507834e73f32b4c82839036dc3897a1587e668Adam Powell // it could change in layoutChildren. 3160d7507834e73f32b4c82839036dc3897a1587e668Adam Powell if (adapter.getCount() < getChildCount() + mFirstPosition) { 3161c854f281a1c330931a2a03eef802ad7d4521998eAdam Powell mLayoutMode = LAYOUT_NORMAL; 3162c854f281a1c330931a2a03eef802ad7d4521998eAdam Powell layoutChildren(); 3163c854f281a1c330931a2a03eef802ad7d4521998eAdam Powell } 3164c854f281a1c330931a2a03eef802ad7d4521998eAdam Powell 31659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // figure out which item should be selected based on previously 31669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // focused rect 31679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Rect otherRect = mTempRect; 31689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int minDistance = Integer.MAX_VALUE; 31699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childCount = getChildCount(); 3170d7507834e73f32b4c82839036dc3897a1587e668Adam Powell final int firstPosition = mFirstPosition; 31719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 31729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < childCount; i++) { 31739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // only consider selectable views 31749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!adapter.isEnabled(firstPosition + i)) { 31759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 31769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 31779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 31789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View other = getChildAt(i); 31799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project other.getDrawingRect(otherRect); 31809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project offsetDescendantRectToMyCoords(other, otherRect); 31819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int distance = getDistance(previouslyFocusedRect, otherRect, direction); 31829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 31839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (distance < minDistance) { 31849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project minDistance = distance; 31859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project closetChildIndex = i; 31869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 31879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 31889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 31899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 31909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (closetChildIndex >= 0) { 31919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelection(closetChildIndex + mFirstPosition); 31929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 31939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 31949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 31959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 31969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 31979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 31989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 31999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * (non-Javadoc) 32009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 32019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Children specified in XML are assumed to be header views. After we have 32029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * parsed them move them out of the children list and into mHeaderViews. 32039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 32049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 32059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onFinishInflate() { 32069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.onFinishInflate(); 32079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 32089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int count = getChildCount(); 32099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (count > 0) { 32109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 32119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project addHeaderView(getChildAt(i)); 32129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 32139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project removeAllViews(); 32149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 32159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 32169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 32179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* (non-Javadoc) 32189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see android.view.View#findViewById(int) 32199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * First look in our children, then in any header and footer views that may be scrolled off. 32209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 32219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 32229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected View findViewTraversal(int id) { 32239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View v; 32249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project v = super.findViewTraversal(id); 32259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (v == null) { 32269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project v = findViewInHeadersOrFooters(mHeaderViewInfos, id); 32279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (v != null) { 32289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return v; 32299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 32309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project v = findViewInHeadersOrFooters(mFooterViewInfos, id); 32319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (v != null) { 32329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return v; 32339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 32349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 32359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return v; 32369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 32379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 32389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* (non-Javadoc) 32399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 32409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Look in the passed in list of headers or footers for the view. 32419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 32429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View findViewInHeadersOrFooters(ArrayList<FixedViewInfo> where, int id) { 32439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (where != null) { 32449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int len = where.size(); 32459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View v; 32469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 32479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < len; i++) { 32489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project v = where.get(i).view; 32499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 32509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!v.isRootNamespace()) { 32519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project v = v.findViewById(id); 32529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 32539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (v != null) { 32549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return v; 32559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 32569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 32579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 32589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 32599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; 32609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 32619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 32629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* (non-Javadoc) 32639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see android.view.View#findViewWithTag(String) 32649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * First look in our children, then in any header and footer views that may be scrolled off. 32659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 32669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 32679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected View findViewWithTagTraversal(Object tag) { 32689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View v; 32699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project v = super.findViewWithTagTraversal(tag); 32709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (v == null) { 32719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project v = findViewTagInHeadersOrFooters(mHeaderViewInfos, tag); 32729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (v != null) { 32739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return v; 32749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 32759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 32769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project v = findViewTagInHeadersOrFooters(mFooterViewInfos, tag); 32779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (v != null) { 32789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return v; 32799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 32809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 32819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return v; 32829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 32839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 32849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* (non-Javadoc) 32859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 32869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Look in the passed in list of headers or footers for the view with the tag. 32879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 32889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View findViewTagInHeadersOrFooters(ArrayList<FixedViewInfo> where, Object tag) { 32899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (where != null) { 32909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int len = where.size(); 32919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View v; 32929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 32939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < len; i++) { 32949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project v = where.get(i).view; 32959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 32969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!v.isRootNamespace()) { 32979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project v = v.findViewWithTag(tag); 32989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 32999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (v != null) { 33009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return v; 33019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; 33069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 33099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean onTouchEvent(MotionEvent ev) { 33109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mItemsCanFocus && ev.getAction() == MotionEvent.ACTION_DOWN && ev.getEdgeFlags() != 0) { 33119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Don't handle edge touches immediately -- they may actually belong to one of our 33129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // descendants. 33139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 33149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return super.onTouchEvent(ev); 33169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 33199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setChoiceMode(int) 33209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 33219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The current choice mode 33229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 33239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getChoiceMode() { 33249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mChoiceMode; 33259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 33289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Defines the choice behavior for the List. By default, Lists do not have any choice behavior 33299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * ({@link #CHOICE_MODE_NONE}). By setting the choiceMode to {@link #CHOICE_MODE_SINGLE}, the 33309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * List allows up to one item to be in a chosen state. By setting the choiceMode to 33319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #CHOICE_MODE_MULTIPLE}, the list allows any number of items to be chosen. 33329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 33339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param choiceMode One of {@link #CHOICE_MODE_NONE}, {@link #CHOICE_MODE_SINGLE}, or 33349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #CHOICE_MODE_MULTIPLE} 33359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 33369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setChoiceMode(int choiceMode) { 33379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mChoiceMode = choiceMode; 33388f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell if (mChoiceMode != CHOICE_MODE_NONE) { 33398f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell if (mCheckStates == null) { 33408f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell mCheckStates = new SparseBooleanArray(); 33418f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell } 3342cb704cd1e05ecd9bbd9bebd16f3b816dcb0c5309Adam Powell if (mCheckedIdStates == null && mAdapter != null && mAdapter.hasStableIds()) { 33438f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell mCheckedIdStates = new LongSparseArray<Boolean>(); 33448f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell } 33459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 33499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean performItemClick(View view, int position, long id) { 33509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean handled = false; 33519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mChoiceMode != CHOICE_MODE_NONE) { 33539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handled = true; 33549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mChoiceMode == CHOICE_MODE_MULTIPLE) { 33568f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell boolean newValue = !mCheckStates.get(position, false); 33578f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell mCheckStates.put(position, newValue); 33588f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell if (mCheckedIdStates != null && mAdapter.hasStableIds()) { 33598f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell if (newValue) { 33608f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell mCheckedIdStates.put(mAdapter.getItemId(position), Boolean.TRUE); 33618f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell } else { 33628f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell mCheckedIdStates.delete(mAdapter.getItemId(position)); 33638f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell } 33648f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell } 33659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 33668f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell boolean newValue = !mCheckStates.get(position, false); 33678f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell if (newValue) { 33689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mCheckStates.clear(); 33699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mCheckStates.put(position, true); 33708f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell if (mCheckedIdStates != null && mAdapter.hasStableIds()) { 33718f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell mCheckedIdStates.clear(); 33728f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell mCheckedIdStates.put(mAdapter.getItemId(position), Boolean.TRUE); 33738f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell } 33748f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell } 33759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDataChanged = true; 33789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project rememberSyncState(); 33799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 33809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handled |= super.performItemClick(view, position, id); 33839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return handled; 33859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 33889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sets the checked state of the specified position. The is only valid if 33899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the choice mode has been set to {@link #CHOICE_MODE_SINGLE} or 33909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #CHOICE_MODE_MULTIPLE}. 3391fd3ddfa6f0559eb29eea179690144a7357c34b3dGilles Debunne * 33929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position The item whose checked state is to be checked 3393fd3ddfa6f0559eb29eea179690144a7357c34b3dGilles Debunne * @param value The new checked state for the item 33949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 33959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setItemChecked(int position, boolean value) { 33969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mChoiceMode == CHOICE_MODE_NONE) { 33979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 33989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 34009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mChoiceMode == CHOICE_MODE_MULTIPLE) { 34019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mCheckStates.put(position, value); 34028f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell if (mCheckedIdStates != null && mAdapter.hasStableIds()) { 34038f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell if (value) { 34048f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell mCheckedIdStates.put(mAdapter.getItemId(position), Boolean.TRUE); 34058f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell } else { 34068f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell mCheckedIdStates.delete(mAdapter.getItemId(position)); 34078f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell } 34088f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell } 34099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 34108f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell boolean updateIds = mCheckedIdStates != null && mAdapter.hasStableIds(); 3411845df82084a0d3b14cdfb5baafea5c6b94967117Brett Chabot // Clear all values if we're checking something, or unchecking the currently 3412845df82084a0d3b14cdfb5baafea5c6b94967117Brett Chabot // selected item 3413845df82084a0d3b14cdfb5baafea5c6b94967117Brett Chabot if (value || isItemChecked(position)) { 3414845df82084a0d3b14cdfb5baafea5c6b94967117Brett Chabot mCheckStates.clear(); 34158f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell if (updateIds) { 34168f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell mCheckedIdStates.clear(); 34178f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell } 3418845df82084a0d3b14cdfb5baafea5c6b94967117Brett Chabot } 34198842f0bd5c97cb39f6912392f34ba7435c275a42Romain Guy // this may end up selecting the value we just cleared but this way 3420845df82084a0d3b14cdfb5baafea5c6b94967117Brett Chabot // we ensure length of mCheckStates is 1, a fact getCheckedItemPosition relies on 34218842f0bd5c97cb39f6912392f34ba7435c275a42Romain Guy if (value) { 34229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mCheckStates.put(position, true); 34238f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell if (updateIds) { 34248f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell mCheckedIdStates.put(mAdapter.getItemId(position), Boolean.TRUE); 34258f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell } 34269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 34279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 34289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 34299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Do not generate a data change while we are in the layout phase 34309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mInLayout && !mBlockLayoutRequests) { 34319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDataChanged = true; 34329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project rememberSyncState(); 34339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 34349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 34359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 34369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 34379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 34389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the checked state of the specified position. The result is only 3439abca4e8384c71721670f860b0d6d544fde8559ccKenny Root * valid if the choice mode has been set to {@link #CHOICE_MODE_SINGLE} 34409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * or {@link #CHOICE_MODE_MULTIPLE}. 34419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 34429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position The item whose checked state to return 3443abca4e8384c71721670f860b0d6d544fde8559ccKenny Root * @return The item's checked state or <code>false</code> if choice mode 3444abca4e8384c71721670f860b0d6d544fde8559ccKenny Root * is invalid 34459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 34469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setChoiceMode(int) 34479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 34489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean isItemChecked(int position) { 34499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mChoiceMode != CHOICE_MODE_NONE && mCheckStates != null) { 34509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mCheckStates.get(position); 34519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 34529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 34539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 34549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 34559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 34569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 34579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the currently checked item. The result is only valid if the choice 3458abca4e8384c71721670f860b0d6d544fde8559ccKenny Root * mode has been set to {@link #CHOICE_MODE_SINGLE}. 34599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 34609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The position of the currently checked item or 34619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #INVALID_POSITION} if nothing is selected 34629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 34639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setChoiceMode(int) 34649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 34659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getCheckedItemPosition() { 34669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mChoiceMode == CHOICE_MODE_SINGLE && mCheckStates != null && mCheckStates.size() == 1) { 34679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mCheckStates.keyAt(0); 34689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 34699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 34709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return INVALID_POSITION; 34719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 34729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 34739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 34749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the set of checked items in the list. The result is only valid if 3475abca4e8384c71721670f860b0d6d544fde8559ccKenny Root * the choice mode has not been set to {@link #CHOICE_MODE_NONE}. 34769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 34779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return A SparseBooleanArray which will return true for each call to 3478abca4e8384c71721670f860b0d6d544fde8559ccKenny Root * get(int position) where position is a position in the list, 3479abca4e8384c71721670f860b0d6d544fde8559ccKenny Root * or <code>null</code> if the choice mode is set to 3480abca4e8384c71721670f860b0d6d544fde8559ccKenny Root * {@link #CHOICE_MODE_NONE}. 34819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 34829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public SparseBooleanArray getCheckedItemPositions() { 34839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mChoiceMode != CHOICE_MODE_NONE) { 34849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mCheckStates; 34859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 34869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; 34879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 34889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 34899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3490fd3ddfa6f0559eb29eea179690144a7357c34b3dGilles Debunne * Returns the set of checked items ids. The result is only valid if the 34918f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell * choice mode has not been set to {@link #CHOICE_MODE_NONE}. 3492fd3ddfa6f0559eb29eea179690144a7357c34b3dGilles Debunne * 3493fd3ddfa6f0559eb29eea179690144a7357c34b3dGilles Debunne * @return A new array which contains the id of each checked item in the 3494fd3ddfa6f0559eb29eea179690144a7357c34b3dGilles Debunne * list. 34958f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell * 3496463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell * @deprecated Use {@link #getCheckedItemIds()} instead. 3497ad28bed52ccabd252149b5297a2d94bacdb388ccRomain Guy */ 3498ad28bed52ccabd252149b5297a2d94bacdb388ccRomain Guy public long[] getCheckItemIds() { 3499463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell // Use new behavior that correctly handles stable ID mapping. 3500463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell if (mAdapter != null && mAdapter.hasStableIds()) { 3501463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell return getCheckedItemIds(); 3502463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell } 3503463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell 3504463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell // Old behavior was buggy, but would sort of work for adapters without stable IDs. 3505463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell // Fall back to it to support legacy apps. 3506463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell if (mChoiceMode != CHOICE_MODE_NONE && mCheckStates != null && mAdapter != null) { 3507463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell final SparseBooleanArray states = mCheckStates; 3508463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell final int count = states.size(); 3509463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell final long[] ids = new long[count]; 3510463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell final ListAdapter adapter = mAdapter; 3511463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell 3512463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell int checkedCount = 0; 3513463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell for (int i = 0; i < count; i++) { 3514463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell if (states.valueAt(i)) { 3515463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell ids[checkedCount++] = adapter.getItemId(states.keyAt(i)); 3516463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell } 3517463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell } 3518463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell 3519463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell // Trim array if needed. mCheckStates may contain false values 3520463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell // resulting in checkedCount being smaller than count. 3521463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell if (checkedCount == count) { 3522463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell return ids; 3523463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell } else { 3524463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell final long[] result = new long[checkedCount]; 3525463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell System.arraycopy(ids, 0, result, 0, checkedCount); 3526463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell 3527463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell return result; 3528463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell } 3529463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell } 3530463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell return new long[0]; 35318f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell } 35328f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell 35338f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell /** 35348f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell * Returns the set of checked items ids. The result is only valid if the 35358f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell * choice mode has not been set to {@link #CHOICE_MODE_NONE} and the adapter 35368f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell * has stable IDs. ({@link ListAdapter#hasStableIds()} == {@code true}) 35378f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell * 35388f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell * @return A new array which contains the id of each checked item in the 35398f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell * list. 35408f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell */ 35418f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell public long[] getCheckedItemIds() { 35428f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell if (mChoiceMode == CHOICE_MODE_NONE || mCheckedIdStates == null || mAdapter == null) { 35438f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell return new long[0]; 3544ad28bed52ccabd252149b5297a2d94bacdb388ccRomain Guy } 35458f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell 35468f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell final LongSparseArray<Boolean> idStates = mCheckedIdStates; 35478f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell final int count = idStates.size(); 35488f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell final long[] ids = new long[count]; 35498f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell 35508f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell for (int i = 0; i < count; i++) { 35518f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell ids[i] = idStates.keyAt(i); 35528f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell } 35538f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell 35548f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell return ids; 3555ad28bed52ccabd252149b5297a2d94bacdb388ccRomain Guy } 3556ad28bed52ccabd252149b5297a2d94bacdb388ccRomain Guy 3557ad28bed52ccabd252149b5297a2d94bacdb388ccRomain Guy /** 35589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Clear any choices previously set 35599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 35609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void clearChoices() { 35619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mCheckStates != null) { 35629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mCheckStates.clear(); 35639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 35648f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell if (mCheckedIdStates != null) { 35658f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell mCheckedIdStates.clear(); 35668f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell } 35679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 35689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 35699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static class SavedState extends BaseSavedState { 35709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project SparseBooleanArray checkState; 35718f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell LongSparseArray<Boolean> checkIdState; 35729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 35739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 35749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Constructor called from {@link ListView#onSaveInstanceState()} 35759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 35768f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell SavedState(Parcelable superState, SparseBooleanArray checkState, 35778f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell LongSparseArray<Boolean> checkIdState) { 35789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(superState); 35799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this.checkState = checkState; 35808f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell this.checkIdState = checkIdState; 35819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 35829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 35839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 35849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Constructor called from {@link #CREATOR} 35859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 35869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private SavedState(Parcel in) { 35879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(in); 35889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkState = in.readSparseBooleanArray(); 35898f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell long[] idState = in.createLongArray(); 35908f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell 35918f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell if (idState.length > 0) { 35928f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell checkIdState = new LongSparseArray<Boolean>(); 35938f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell checkIdState.setValues(idState, Boolean.TRUE); 35948f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell } 35959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 35969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 35979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 35989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void writeToParcel(Parcel out, int flags) { 35999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.writeToParcel(out, flags); 36009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project out.writeSparseBooleanArray(checkState); 36018f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell out.writeLongArray(checkIdState != null ? checkIdState.getKeys() : new long[0]); 36029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 36059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public String toString() { 36069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return "ListView.SavedState{" 36079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + Integer.toHexString(System.identityHashCode(this)) 36089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + " checkState=" + checkState + "}"; 36099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final Parcelable.Creator<SavedState> CREATOR 36129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project = new Parcelable.Creator<SavedState>() { 36139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public SavedState createFromParcel(Parcel in) { 36149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new SavedState(in); 36159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public SavedState[] newArray(int size) { 36189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new SavedState[size]; 36199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project }; 36219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 36249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Parcelable onSaveInstanceState() { 36259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Parcelable superState = super.onSaveInstanceState(); 36268f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell return new SavedState(superState, mCheckStates, mCheckedIdStates); 36279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 36309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onRestoreInstanceState(Parcelable state) { 36319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project SavedState ss = (SavedState) state; 36329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.onRestoreInstanceState(ss.getSuperState()); 36349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (ss.checkState != null) { 36369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mCheckStates = ss.checkState; 36379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36398f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell if (ss.checkIdState != null) { 36408f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell mCheckedIdStates = ss.checkIdState; 36418f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell } 36429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 3644