ListView.java revision 20cc605b69a017316112929666255226c184a376
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 195fade8c69aef621312232ef0647502d7a63990b9Romain Guyimport android.os.Trace; 20fd3ddfa6f0559eb29eea179690144a7357c34b3dGilles Debunneimport com.android.internal.R; 214e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brownimport com.android.internal.util.Predicate; 22fd3ddfa6f0559eb29eea179690144a7357c34b3dGilles Debunneimport com.google.android.collect.Lists; 23fd3ddfa6f0559eb29eea179690144a7357c34b3dGilles Debunne 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.Context; 25499cb9f516062b654952d282f211bee44c31a3c2Winson Chungimport android.content.Intent; 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.res.TypedArray; 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.graphics.Canvas; 288f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guyimport android.graphics.Paint; 29fd3ddfa6f0559eb29eea179690144a7357c34b3dGilles Debunneimport android.graphics.PixelFormat; 30fd3ddfa6f0559eb29eea179690144a7357c34b3dGilles Debunneimport android.graphics.Rect; 31fd3ddfa6f0559eb29eea179690144a7357c34b3dGilles Debunneimport android.graphics.drawable.Drawable; 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.AttributeSet; 3330ee76cf05f785bbf819b71954242c835c597ce1alanvimport android.util.MathUtils; 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.SparseBooleanArray; 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.FocusFinder; 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.KeyEvent; 37fd3ddfa6f0559eb29eea179690144a7357c34b3dGilles Debunneimport android.view.SoundEffectConstants; 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.View; 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.ViewDebug; 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.ViewGroup; 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.ViewParent; 4227093def8d5b13982b5dd4d949909ecdf7ec2fd6alanvimport android.view.ViewRootImpl; 4375986cf9bc57ef11ad70f36fb77fbbf5d63af6ecsvetoslavganovimport android.view.accessibility.AccessibilityEvent; 448a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganovimport android.view.accessibility.AccessibilityNodeInfo; 455b2081dc41cccd76780a2cb4e9a973505c13446cAlan Viveretteimport android.view.accessibility.AccessibilityNodeInfo.CollectionInfo; 465b2081dc41cccd76780a2cb4e9a973505c13446cAlan Viveretteimport android.view.accessibility.AccessibilityNodeInfo.CollectionItemInfo; 47499cb9f516062b654952d282f211bee44c31a3c2Winson Chungimport android.widget.RemoteViews.RemoteView; 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.util.ArrayList; 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Implementation Notes: 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Some terminology: 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * index - index of the items that are currently visible 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * position - index of the items in the cursor 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * A view that shows items in a vertically scrolling list. The items 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * come from the {@link ListAdapter} associated with this view. 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 654c359b76f9a030f92a302ba74a528faa170bad4eScott Main * <p>See the <a href="{@docRoot}guide/topics/ui/layout/listview.html">List View</a> 664c359b76f9a030f92a302ba74a528faa170bad4eScott Main * guide.</p> 6741ec65355bd6ded652769725b276d47c54a0d913Scott Main * 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#ListView_entries 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#ListView_divider 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#ListView_dividerHeight 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#ListView_headerDividersEnabled 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @attr ref android.R.styleable#ListView_footerDividersEnabled 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 74499cb9f516062b654952d282f211bee44c31a3c2Winson Chung@RemoteView 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic class ListView extends AbsListView { 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Used to indicate a no preference for a position type. 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static final int NO_POSITION = -1; 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * When arrow scrolling, ListView will never scroll more than this factor 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * times the height of the list. 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final float MAX_SCROLL_FACTOR = 0.33f; 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * When arrow scrolling, need a certain amount of pixels to preview next 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * items. This is usually the fading edge, but if that is small enough, 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * we want to make sure we preview at least this many pixels. 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int MIN_SCROLL_PREVIEW_PIXELS = 2; 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * A class that represents a fixed view in a list, for example a header at the top 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * or a footer at the bottom. 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public class FixedViewInfo { 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** The view to add to the list */ 1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public View view; 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** The data backing the view. This is returned from {@link ListAdapter#getItem(int)}. */ 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Object data; 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** <code>true</code> if the fixed view should be selectable in the list */ 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean isSelectable; 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private ArrayList<FixedViewInfo> mHeaderViewInfos = Lists.newArrayList(); 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private ArrayList<FixedViewInfo> mFooterViewInfos = Lists.newArrayList(); 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Drawable mDivider; 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mDividerHeight; 112fb60386b46d0c6216c765c10bd33ac42ca780917Adam Cohen 113637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell Drawable mOverScrollHeader; 114637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell Drawable mOverScrollFooter; 115637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell 11624443ea3992e372e47daa50266b0f2ec38cac388Romain Guy private boolean mIsCacheColorOpaque; 11724443ea3992e372e47daa50266b0f2ec38cac388Romain Guy private boolean mDividerIsOpaque; 11824443ea3992e372e47daa50266b0f2ec38cac388Romain Guy 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mHeaderDividersEnabled; 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mFooterDividersEnabled; 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mAreAllItemsSelectable = true; 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mItemsCanFocus = false; 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // used for temporary calculations. 127c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project private final Rect mTempRect = new Rect(); 128a02903fbee6725563da4472bd120f844e9d5518cRomain Guy private Paint mDividerPaint; 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // the single allocated result per list view; kinda cheesey but avoids 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // allocating these thingies too often. 1329c3184cc162ee8c10eabd3f996629a9397a1f551Romain Guy private final ArrowScrollFocusResult mArrowScrollFocusResult = new ArrowScrollFocusResult(); 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1349bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell // Keeps focused children visible through resizes 1359bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell private FocusSelector mFocusSelector; 1368350f7dbc3a62211b2891f35911e4073d24c4cc5Adam Powell 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public ListView(Context context) { 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this(context, null); 1399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public ListView(Context context, AttributeSet attrs) { 1429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this(context, attrs, com.android.internal.R.attr.listViewStyle); 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 145617feb99a06e7ffb3894e86a286bf30e085f321aAlan Viverette public ListView(Context context, AttributeSet attrs, int defStyleAttr) { 146617feb99a06e7ffb3894e86a286bf30e085f321aAlan Viverette this(context, attrs, defStyleAttr, 0); 147617feb99a06e7ffb3894e86a286bf30e085f321aAlan Viverette } 148617feb99a06e7ffb3894e86a286bf30e085f321aAlan Viverette 149617feb99a06e7ffb3894e86a286bf30e085f321aAlan Viverette public ListView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { 150617feb99a06e7ffb3894e86a286bf30e085f321aAlan Viverette super(context, attrs, defStyleAttr, defStyleRes); 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 152617feb99a06e7ffb3894e86a286bf30e085f321aAlan Viverette final TypedArray a = context.obtainStyledAttributes( 153617feb99a06e7ffb3894e86a286bf30e085f321aAlan Viverette attrs, com.android.internal.R.styleable.ListView, defStyleAttr, defStyleRes); 1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project CharSequence[] entries = a.getTextArray( 1569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project com.android.internal.R.styleable.ListView_entries); 1579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (entries != null) { 1589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setAdapter(new ArrayAdapter<CharSequence>(context, 1599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project com.android.internal.R.layout.simple_list_item_1, entries)); 1609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final Drawable d = a.getDrawable(com.android.internal.R.styleable.ListView_divider); 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (d != null) { 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If a divider is specified use its intrinsic height for divider height 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setDivider(d); 1669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 167bfb5d4b93bb739a012ecec604473838c1343c88aAdam Powell 168637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell final Drawable osHeader = a.getDrawable( 169637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell com.android.internal.R.styleable.ListView_overScrollHeader); 170637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell if (osHeader != null) { 171637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell setOverscrollHeader(osHeader); 172637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell } 173637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell 174637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell final Drawable osFooter = a.getDrawable( 175637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell com.android.internal.R.styleable.ListView_overScrollFooter); 176637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell if (osFooter != null) { 177637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell setOverscrollFooter(osFooter); 178637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell } 179637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell 1809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Use the height specified, zero being the default 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int dividerHeight = a.getDimensionPixelSize( 1829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project com.android.internal.R.styleable.ListView_dividerHeight, 0); 1839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (dividerHeight != 0) { 1849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setDividerHeight(dividerHeight); 1859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mHeaderDividersEnabled = a.getBoolean(R.styleable.ListView_headerDividersEnabled, true); 1889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFooterDividersEnabled = a.getBoolean(R.styleable.ListView_footerDividersEnabled, true); 1899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project a.recycle(); 1919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The maximum amount a list view will scroll in response to 1959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * an arrow event. 1969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getMaxScrollAmount() { 1989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (int) (MAX_SCROLL_FACTOR * (mBottom - mTop)); 1999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Make sure views are touching the top or bottom edge, as appropriate for 2039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * our gravity 2049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void adjustViewsUpOrDown() { 2069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childCount = getChildCount(); 2079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int delta; 2089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childCount > 0) { 2109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View child; 2119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mStackFromBottom) { 2139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Uh-oh -- we came up short. Slide all views up to make them 2149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // align with the top 2159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child = getChildAt(0); 2169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project delta = child.getTop() - mListPadding.top; 2179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mFirstPosition != 0) { 2189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // It's OK to have some space above the first item if it is 2199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // part of the vertical spacing 2209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project delta -= mDividerHeight; 2219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (delta < 0) { 2239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // We only are looking to see if we are too low, not too high 2249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project delta = 0; 2259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 2279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // we are too high, slide all views down to align with bottom 2289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child = getChildAt(childCount - 1); 2299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project delta = child.getBottom() - (getHeight() - mListPadding.bottom); 2309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mFirstPosition + childCount < mItemCount) { 2329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // It's OK to have some space below the last item if it is 2339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // part of the vertical spacing 2349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project delta += mDividerHeight; 2359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (delta > 0) { 2389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project delta = 0; 2399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (delta != 0) { 2439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project offsetChildrenTopAndBottom(-delta); 2449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 24972e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette * Add a fixed view to appear at the top of the list. If this method is 2509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * called more than once, the views will appear in the order they were 2519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * added. Views added using this call can take focus if they want. 2529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p> 25372e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette * Note: When first introduced, this method could only be called before 25472e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette * setting the adapter with {@link #setAdapter(ListAdapter)}. Starting with 255e8222dddaf2e3da14380101e818d4254899e0c0dChet Haase * {@link android.os.Build.VERSION_CODES#KITKAT}, this method may be 25672e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette * called at any time. If the ListView's adapter does not extend 25772e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette * {@link HeaderViewListAdapter}, it will be wrapped with a supporting 25872e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette * instance of {@link WrapperListAdapter}. 2599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param v The view to add. 2619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param data Data to associate with this view 2629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param isSelectable whether the item is selectable 2639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void addHeaderView(View v, Object data, boolean isSelectable) { 26572e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette final 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); 27020cc605b69a017316112929666255226c184a376Alan Viverette mAreAllItemsSelectable &= isSelectable; 27122c04a316a482176957fd27285c0fe36e2f3979cMarco Nelissen 27272e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette // Wrap the adapter if it wasn't already wrapped. 27372e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette if (mAdapter != null) { 27472e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette if (!(mAdapter instanceof HeaderViewListAdapter)) { 27572e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette mAdapter = new HeaderViewListAdapter(mHeaderViewInfos, mFooterViewInfos, mAdapter); 27672e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette } 27772e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette 27872e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette // In the case of re-adding a header view, or adding one later on, 27972e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette // we need to notify the observer. 28072e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette if (mDataSetObserver != null) { 28172e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette mDataSetObserver.onChanged(); 28272e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette } 28322c04a316a482176957fd27285c0fe36e2f3979cMarco Nelissen } 2849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Add a fixed view to appear at the top of the list. If addHeaderView is 2889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * called more than once, the views will appear in the order they were 2899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * added. Views added using this call can take focus if they want. 2909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p> 29172e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette * Note: When first introduced, this method could only be called before 29272e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette * setting the adapter with {@link #setAdapter(ListAdapter)}. Starting with 293e8222dddaf2e3da14380101e818d4254899e0c0dChet Haase * {@link android.os.Build.VERSION_CODES#KITKAT}, this method may be 29472e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette * called at any time. If the ListView's adapter does not extend 29572e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette * {@link HeaderViewListAdapter}, it will be wrapped with a supporting 29672e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette * instance of {@link WrapperListAdapter}. 2979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param v The view to add. 2999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void addHeaderView(View v) { 3019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project addHeaderView(v, null, true); 3029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 3059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getHeaderViewsCount() { 3069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mHeaderViewInfos.size(); 3079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Removes a previously-added header view. 3119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param v The view to remove 3139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return true if the view was removed, false if the view was not a header 3149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * view 3159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean removeHeaderView(View v) { 3179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mHeaderViewInfos.size() > 0) { 3189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean result = false; 319247a0f0a16f956c463644f732dacb6c8d0979ba3Adam Powell if (mAdapter != null && ((HeaderViewListAdapter) mAdapter).removeHeader(v)) { 32022c04a316a482176957fd27285c0fe36e2f3979cMarco Nelissen if (mDataSetObserver != null) { 32122c04a316a482176957fd27285c0fe36e2f3979cMarco Nelissen mDataSetObserver.onChanged(); 32222c04a316a482176957fd27285c0fe36e2f3979cMarco Nelissen } 3239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project result = true; 3249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project removeFixedViewInfo(v, mHeaderViewInfos); 3269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return result; 3279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 3299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void removeFixedViewInfo(View v, ArrayList<FixedViewInfo> where) { 3329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int len = where.size(); 3339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < len; ++i) { 3349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project FixedViewInfo info = where.get(i); 3359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (info.view == v) { 3369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project where.remove(i); 3379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 3389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Add a fixed view to appear at the bottom of the list. If addFooterView is 3449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * called more than once, the views will appear in the order they were 3459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * added. Views added using this call can take focus if they want. 3469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * <p> 34772e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette * Note: When first introduced, this method could only be called before 34872e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette * setting the adapter with {@link #setAdapter(ListAdapter)}. Starting with 349e8222dddaf2e3da14380101e818d4254899e0c0dChet Haase * {@link android.os.Build.VERSION_CODES#KITKAT}, this method may be 35072e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette * called at any time. If the ListView's adapter does not extend 35172e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette * {@link HeaderViewListAdapter}, it will be wrapped with a supporting 35272e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette * instance of {@link WrapperListAdapter}. 3539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param v The view to add. 3559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param data Data to associate with this view 3569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param isSelectable true if the footer view can be selected 3579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void addFooterView(View v, Object data, boolean isSelectable) { 35972e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette final FixedViewInfo info = new FixedViewInfo(); 3609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project info.view = v; 3619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project info.data = data; 3629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project info.isSelectable = isSelectable; 3639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFooterViewInfos.add(info); 36420cc605b69a017316112929666255226c184a376Alan Viverette mAreAllItemsSelectable &= isSelectable; 3659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36672e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette // Wrap the adapter if it wasn't already wrapped. 36772e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette if (mAdapter != null) { 36872e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette if (!(mAdapter instanceof HeaderViewListAdapter)) { 36972e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette mAdapter = new HeaderViewListAdapter(mHeaderViewInfos, mFooterViewInfos, mAdapter); 37072e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette } 37172e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette 37272e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette // In the case of re-adding a footer view, or adding one later on, 37372e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette // we need to notify the observer. 37472e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette if (mDataSetObserver != null) { 37572e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette mDataSetObserver.onChanged(); 37672e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette } 3779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 38172e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette * Add a fixed view to appear at the bottom of the list. If addFooterView is 38272e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette * called more than once, the views will appear in the order they were 38372e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette * added. Views added using this call can take focus if they want. 38472e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette * <p> 38572e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette * Note: When first introduced, this method could only be called before 38672e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette * setting the adapter with {@link #setAdapter(ListAdapter)}. Starting with 387e8222dddaf2e3da14380101e818d4254899e0c0dChet Haase * {@link android.os.Build.VERSION_CODES#KITKAT}, this method may be 38872e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette * called at any time. If the ListView's adapter does not extend 38972e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette * {@link HeaderViewListAdapter}, it will be wrapped with a supporting 39072e2f2a94049642454e960f344dc6feed4ec1dc9Alan Viverette * instance of {@link WrapperListAdapter}. 3919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param v The view to add. 3939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void addFooterView(View v) { 3959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project addFooterView(v, null, true); 3969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 3999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getFooterViewsCount() { 4009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mFooterViewInfos.size(); 4019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Removes a previously-added footer view. 4059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param v The view to remove 4079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return 4089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * true if the view was removed, false if the view was not a footer view 4099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean removeFooterView(View v) { 4119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mFooterViewInfos.size() > 0) { 4129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean result = false; 413247a0f0a16f956c463644f732dacb6c8d0979ba3Adam Powell if (mAdapter != null && ((HeaderViewListAdapter) mAdapter).removeFooter(v)) { 41422c04a316a482176957fd27285c0fe36e2f3979cMarco Nelissen if (mDataSetObserver != null) { 41522c04a316a482176957fd27285c0fe36e2f3979cMarco Nelissen mDataSetObserver.onChanged(); 41622c04a316a482176957fd27285c0fe36e2f3979cMarco Nelissen } 4179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project result = true; 4189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project removeFixedViewInfo(v, mFooterViewInfos); 4209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return result; 4219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 4239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the adapter currently in use in this ListView. The returned adapter 4279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * might not be the same adapter passed to {@link #setAdapter(ListAdapter)} but 4289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * might be a {@link WrapperListAdapter}. 4299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The adapter currently used to display data in this ListView. 4319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setAdapter(ListAdapter) 4339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 4359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public ListAdapter getAdapter() { 4369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mAdapter; 4379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 440499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * Sets up this AbsListView to use a remote views adapter which connects to a RemoteViewsService 441499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * through the specified intent. 442499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * @param intent the intent used to identify the RemoteViewsService for the adapter to connect to. 443499cb9f516062b654952d282f211bee44c31a3c2Winson Chung */ 444499cb9f516062b654952d282f211bee44c31a3c2Winson Chung @android.view.RemotableViewMethod 445499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public void setRemoteViewsAdapter(Intent intent) { 446499cb9f516062b654952d282f211bee44c31a3c2Winson Chung super.setRemoteViewsAdapter(intent); 447499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 448499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 449499cb9f516062b654952d282f211bee44c31a3c2Winson Chung /** 4509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sets the data behind this ListView. 4519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The adapter passed to this method may be wrapped by a {@link WrapperListAdapter}, 4539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * depending on the ListView features currently in use. For instance, adding 4549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * headers and/or footers will cause the adapter to be wrapped. 4559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param adapter The ListAdapter which is responsible for maintaining the 4579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * data backing this list and for producing a view to represent an 4589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * item in that data set. 4599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #getAdapter() 4619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 4639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setAdapter(ListAdapter adapter) { 464df36b0579e1e550de3d66a20362717e49b23235cRomain Guy if (mAdapter != null && mDataSetObserver != null) { 4659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mAdapter.unregisterDataSetObserver(mDataSetObserver); 4669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project resetList(); 4699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mRecycler.clear(); 4709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mHeaderViewInfos.size() > 0|| mFooterViewInfos.size() > 0) { 4729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mAdapter = new HeaderViewListAdapter(mHeaderViewInfos, mFooterViewInfos, adapter); 4739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 4749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mAdapter = adapter; 4759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOldSelectedPosition = INVALID_POSITION; 4789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOldSelectedRowId = INVALID_ROW_ID; 479f343e1ba7e796120eefa917dbf78348feea98e11Adam Powell 480f343e1ba7e796120eefa917dbf78348feea98e11Adam Powell // AbsListView#setAdapter will update choice mode states. 481f343e1ba7e796120eefa917dbf78348feea98e11Adam Powell super.setAdapter(adapter); 482f343e1ba7e796120eefa917dbf78348feea98e11Adam Powell 4839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mAdapter != null) { 4849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mAreAllItemsSelectable = mAdapter.areAllItemsEnabled(); 4859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOldItemCount = mItemCount; 4869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mItemCount = mAdapter.getCount(); 4879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkFocus(); 4889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDataSetObserver = new AdapterDataSetObserver(); 4909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mAdapter.registerDataSetObserver(mDataSetObserver); 4919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mRecycler.setViewTypeCount(mAdapter.getViewTypeCount()); 4939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int position; 4959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mStackFromBottom) { 4969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project position = lookForSelectablePosition(mItemCount - 1, false); 4979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 4989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project position = lookForSelectablePosition(0, true); 4999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelectedPositionInt(position); 5019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setNextSelectedPositionInt(position); 5029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mItemCount == 0) { 5049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Nothing selected 5059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkSelectionChanged(); 5069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 5089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mAreAllItemsSelectable = true; 5099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkFocus(); 5109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Nothing selected 5119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkSelectionChanged(); 5129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 5159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The list is empty. Clear everything out. 5199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 5219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void resetList() { 5222e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy // The parent's resetList() will remove all views from the layout so we need to 5232e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy // cleanup the state of our footers and headers 5242e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy clearRecycledState(mHeaderViewInfos); 5252e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy clearRecycledState(mFooterViewInfos); 5262e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy 5279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.resetList(); 5282e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy 5299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutMode = LAYOUT_NORMAL; 5309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5322e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy private void clearRecycledState(ArrayList<FixedViewInfo> infos) { 5332e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy if (infos != null) { 5342e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy final int count = infos.size(); 5352e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy 5362e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy for (int i = 0; i < count; i++) { 5372e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy final View child = infos.get(i).view; 5382e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy final LayoutParams p = (LayoutParams) child.getLayoutParams(); 5392e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy if (p != null) { 5402e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy p.recycledHeaderFooter = false; 5412e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy } 5422e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy } 5432e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy } 5442e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy } 5452e447d46d9936c325fe5209262564fc3c5e795a2Romain Guy 5469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Whether the list needs to show the top fading edge 5489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean showingTopFadingEdge() { 5509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int listTop = mScrollY + mListPadding.top; 5519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (mFirstPosition > 0) || (getChildAt(0).getTop() > listTop); 5529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Whether the list needs to show the bottom fading edge 5569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean showingBottomFadingEdge() { 5589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childCount = getChildCount(); 5599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int bottomOfBottomChild = getChildAt(childCount - 1).getBottom(); 5609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int lastVisiblePosition = mFirstPosition + childCount - 1; 5619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int listBottom = mScrollY + getHeight() - mListPadding.bottom; 5639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (lastVisiblePosition < mItemCount - 1) 5659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project || (bottomOfBottomChild < listBottom); 5669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 5709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean requestChildRectangleOnScreen(View child, Rect rect, boolean immediate) { 5719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int rectTopWithinChild = rect.top; 5739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // offset so rect is in coordinates of the this view 5759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project rect.offset(child.getLeft(), child.getTop()); 5769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project rect.offset(-child.getScrollX(), -child.getScrollY()); 5779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int height = getHeight(); 5799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int listUnfadedTop = getScrollY(); 5809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int listUnfadedBottom = listUnfadedTop + height; 5819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int fadingEdge = getVerticalFadingEdgeLength(); 5829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (showingTopFadingEdge()) { 5849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // leave room for top fading edge as long as rect isn't at very top 5859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((mSelectedPosition > 0) || (rectTopWithinChild > fadingEdge)) { 5869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project listUnfadedTop += fadingEdge; 5879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childCount = getChildCount(); 5919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int bottomOfBottomChild = getChildAt(childCount - 1).getBottom(); 5929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (showingBottomFadingEdge()) { 5949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // leave room for bottom fading edge as long as rect isn't at very bottom 5959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((mSelectedPosition < mItemCount - 1) 5969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project || (rect.bottom < (bottomOfBottomChild - fadingEdge))) { 5979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project listUnfadedBottom -= fadingEdge; 5989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int scrollYDelta = 0; 6029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (rect.bottom > listUnfadedBottom && rect.top > listUnfadedTop) { 6049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // need to MOVE DOWN to get it in view: move down just enough so 6059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // that the entire rectangle is in view (or at least the first 6069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // screen size chunk). 6079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (rect.height() > height) { 6099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // just enough to get screen size chunk on 6109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project scrollYDelta += (rect.top - listUnfadedTop); 6119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 6129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // get entire rect at bottom of screen 6139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project scrollYDelta += (rect.bottom - listUnfadedBottom); 6149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // make sure we aren't scrolling beyond the end of our children 6179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int distanceToBottom = bottomOfBottomChild - listUnfadedBottom; 6189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project scrollYDelta = Math.min(scrollYDelta, distanceToBottom); 6199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (rect.top < listUnfadedTop && rect.bottom < listUnfadedBottom) { 6209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // need to MOVE UP to get it in view: move up just enough so that 6219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // entire rectangle is in view (or at least the first screen 6229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // size chunk of it). 6239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (rect.height() > height) { 6259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // screen size chunk 6269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project scrollYDelta -= (listUnfadedBottom - rect.bottom); 6279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 6289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // entire rect at top 6299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project scrollYDelta -= (listUnfadedTop - rect.top); 6309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // make sure we aren't scrolling any further than the top our children 6339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int top = getChildAt(0).getTop(); 6349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int deltaToTop = top - listUnfadedTop; 6359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project scrollYDelta = Math.max(scrollYDelta, deltaToTop); 6369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean scroll = scrollYDelta != 0; 6399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (scroll) { 6409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project scrollListItemsBy(-scrollYDelta); 641079e23575024e103358c982152afb7a720ae1a8aDianne Hackborn positionSelector(INVALID_POSITION, child); 6429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectedTop = child.getTop(); 6439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invalidate(); 6449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return scroll; 6469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@inheritDoc} 6509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 6529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void fillGap(boolean down) { 6539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getChildCount(); 6549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (down) { 6558c3e0fc84f69e9fe704dc20dd6c2bab1ce43fe93Adam Powell int paddingTop = 0; 6568c3e0fc84f69e9fe704dc20dd6c2bab1ce43fe93Adam Powell if ((mGroupFlags & CLIP_TO_PADDING_MASK) == CLIP_TO_PADDING_MASK) { 6578c3e0fc84f69e9fe704dc20dd6c2bab1ce43fe93Adam Powell paddingTop = getListPaddingTop(); 6588c3e0fc84f69e9fe704dc20dd6c2bab1ce43fe93Adam Powell } 6599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int startOffset = count > 0 ? getChildAt(count - 1).getBottom() + mDividerHeight : 6608c3e0fc84f69e9fe704dc20dd6c2bab1ce43fe93Adam Powell paddingTop; 6619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillDown(mFirstPosition + count, startOffset); 6629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project correctTooHigh(getChildCount()); 6639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 6648c3e0fc84f69e9fe704dc20dd6c2bab1ce43fe93Adam Powell int paddingBottom = 0; 6658c3e0fc84f69e9fe704dc20dd6c2bab1ce43fe93Adam Powell if ((mGroupFlags & CLIP_TO_PADDING_MASK) == CLIP_TO_PADDING_MASK) { 6668c3e0fc84f69e9fe704dc20dd6c2bab1ce43fe93Adam Powell paddingBottom = getListPaddingBottom(); 6678c3e0fc84f69e9fe704dc20dd6c2bab1ce43fe93Adam Powell } 6689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int startOffset = count > 0 ? getChildAt(0).getTop() - mDividerHeight : 6698c3e0fc84f69e9fe704dc20dd6c2bab1ce43fe93Adam Powell getHeight() - paddingBottom; 6709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillUp(mFirstPosition - 1, startOffset); 6719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project correctTooLow(getChildCount()); 6729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Fills the list from pos down to the end of the list view. 6779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param pos The first position to put in the list 6799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param nextTop The location where the top of the item associated with pos 6819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * should be drawn 6829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The view that is currently selected, if it happens to be in the 6849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * range that we draw. 6859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private View fillDown(int pos, int nextTop) { 6879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View selectedView = null; 6889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6898c3e0fc84f69e9fe704dc20dd6c2bab1ce43fe93Adam Powell int end = (mBottom - mTop); 6908c3e0fc84f69e9fe704dc20dd6c2bab1ce43fe93Adam Powell if ((mGroupFlags & CLIP_TO_PADDING_MASK) == CLIP_TO_PADDING_MASK) { 6918c3e0fc84f69e9fe704dc20dd6c2bab1ce43fe93Adam Powell end -= mListPadding.bottom; 6928c3e0fc84f69e9fe704dc20dd6c2bab1ce43fe93Adam Powell } 6939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while (nextTop < end && pos < mItemCount) { 6959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // is this the selected item? 6969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean selected = pos == mSelectedPosition; 6979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View child = makeAndAddView(pos, nextTop, true, mListPadding.left, selected); 6989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nextTop = child.getBottom() + mDividerHeight; 7009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (selected) { 7019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedView = child; 7029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project pos++; 7049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 706b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen setVisibleRangeHint(mFirstPosition, mFirstPosition + getChildCount() - 1); 7079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return selectedView; 7089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Fills the list from pos up to the top of the list view. 7129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param pos The first position to put in the list 7149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param nextBottom The location where the bottom of the item associated 7169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * with pos should be drawn 7179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The view that is currently selected 7199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private View fillUp(int pos, int nextBottom) { 7219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View selectedView = null; 7229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7238c3e0fc84f69e9fe704dc20dd6c2bab1ce43fe93Adam Powell int end = 0; 7248c3e0fc84f69e9fe704dc20dd6c2bab1ce43fe93Adam Powell if ((mGroupFlags & CLIP_TO_PADDING_MASK) == CLIP_TO_PADDING_MASK) { 7258c3e0fc84f69e9fe704dc20dd6c2bab1ce43fe93Adam Powell end = mListPadding.top; 7268c3e0fc84f69e9fe704dc20dd6c2bab1ce43fe93Adam Powell } 7279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while (nextBottom > end && pos >= 0) { 7299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // is this the selected item? 7309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean selected = pos == mSelectedPosition; 7319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View child = makeAndAddView(pos, nextBottom, false, mListPadding.left, selected); 7329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nextBottom = child.getTop() - mDividerHeight; 7339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (selected) { 7349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedView = child; 7359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project pos--; 7379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFirstPosition = pos + 1; 740b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen setVisibleRangeHint(mFirstPosition, mFirstPosition + getChildCount() - 1); 7419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return selectedView; 7429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Fills the list from top to bottom, starting with mFirstPosition 7469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param nextTop The location where the top of the first item should be 7489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * drawn 7499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The view that is currently selected 7519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private View fillFromTop(int nextTop) { 7539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFirstPosition = Math.min(mFirstPosition, mSelectedPosition); 7549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFirstPosition = Math.min(mFirstPosition, mItemCount - 1); 7559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mFirstPosition < 0) { 7569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFirstPosition = 0; 7579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return fillDown(mFirstPosition, nextTop); 7599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Put mSelectedPosition in the middle of the screen and then build up and 7649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * down from there. This method forces mSelectedPosition to the center. 7659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 7669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childrenTop Top of the area in which children can be drawn, as 7679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * measured in pixels 7689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childrenBottom Bottom of the area in which children can be drawn, 7699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * as measured in pixels 7709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Currently selected view 7719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private View fillFromMiddle(int childrenTop, int childrenBottom) { 7739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int height = childrenBottom - childrenTop; 7749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int position = reconcileSelectedPosition(); 7769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View sel = makeAndAddView(position, childrenTop, true, 7789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mListPadding.left, true); 7799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFirstPosition = position; 7809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int selHeight = sel.getMeasuredHeight(); 7829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (selHeight <= height) { 7839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel.offsetTopAndBottom((height - selHeight) / 2); 7849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillAboveAndBelow(sel, position); 7879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mStackFromBottom) { 7899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project correctTooHigh(getChildCount()); 7909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 7919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project correctTooLow(getChildCount()); 7929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return sel; 7959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Once the selected view as been placed, fill up the visible area above and 7999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * below it. 8009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 8019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param sel The selected view 8029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position The position corresponding to sel 8039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 8049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void fillAboveAndBelow(View sel, int position) { 8059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int dividerHeight = mDividerHeight; 8069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mStackFromBottom) { 8079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillUp(position - 1, sel.getTop() - dividerHeight); 8089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adjustViewsUpOrDown(); 8099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillDown(position + 1, sel.getBottom() + dividerHeight); 8109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 8119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillDown(position + 1, sel.getBottom() + dividerHeight); 8129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adjustViewsUpOrDown(); 8139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillUp(position - 1, sel.getTop() - dividerHeight); 8149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 8199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Fills the grid based on positioning the new selection at a specific 8209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * location. The selection may be moved so that it does not intersect the 8219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * faded edges. The grid is then filled upwards and downwards from there. 8229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 8239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param selectedTop Where the selected item should be 8249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childrenTop Where to start drawing children 8259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childrenBottom Last pixel where children can be drawn 8269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The view that currently has selection 8279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 8289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private View fillFromSelection(int selectedTop, int childrenTop, int childrenBottom) { 8299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int fadingEdgeLength = getVerticalFadingEdgeLength(); 8309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int selectedPosition = mSelectedPosition; 8319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View sel; 8339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int topSelectionPixel = getTopSelectionPixel(childrenTop, fadingEdgeLength, 8359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedPosition); 8369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int bottomSelectionPixel = getBottomSelectionPixel(childrenBottom, fadingEdgeLength, 8379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedPosition); 8389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = makeAndAddView(selectedPosition, selectedTop, true, mListPadding.left, true); 8409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Some of the newly selected item extends below the bottom of the list 8439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (sel.getBottom() > bottomSelectionPixel) { 8449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Find space available above the selection into which we can scroll 8459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // upwards 8469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int spaceAbove = sel.getTop() - topSelectionPixel; 8479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Find space required to bring the bottom of the selected item 8499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // fully into view 8509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int spaceBelow = sel.getBottom() - bottomSelectionPixel; 8519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int offset = Math.min(spaceAbove, spaceBelow); 8529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Now offset the selected item to get it into view 8549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel.offsetTopAndBottom(-offset); 8559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (sel.getTop() < topSelectionPixel) { 8569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Find space required to bring the top of the selected item fully 8579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // into view 8589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int spaceAbove = topSelectionPixel - sel.getTop(); 8599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Find space available below the selection into which we can scroll 8619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // downwards 8629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int spaceBelow = bottomSelectionPixel - sel.getBottom(); 8639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int offset = Math.min(spaceAbove, spaceBelow); 8649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Offset the selected item to get it into view 8669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel.offsetTopAndBottom(offset); 8679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Fill in views above and below 8709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillAboveAndBelow(sel, selectedPosition); 8719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mStackFromBottom) { 8739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project correctTooHigh(getChildCount()); 8749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 8759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project correctTooLow(getChildCount()); 8769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return sel; 8799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 8829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Calculate the bottom-most pixel we can draw the selection into 8839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 8849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childrenBottom Bottom pixel were children can be drawn 8859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param fadingEdgeLength Length of the fading edge in pixels, if present 8869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param selectedPosition The position that will be selected 8879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The bottom-most pixel we can draw the selection into 8889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 8899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int getBottomSelectionPixel(int childrenBottom, int fadingEdgeLength, 8909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int selectedPosition) { 8919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int bottomSelectionPixel = childrenBottom; 8929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (selectedPosition != mItemCount - 1) { 8939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bottomSelectionPixel -= fadingEdgeLength; 8949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return bottomSelectionPixel; 8969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 8979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 8989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 8999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Calculate the top-most pixel we can draw the selection into 9009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 9019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childrenTop Top pixel were children can be drawn 9029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param fadingEdgeLength Length of the fading edge in pixels, if present 9039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param selectedPosition The position that will be selected 9049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The top-most pixel we can draw the selection into 9059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int getTopSelectionPixel(int childrenTop, int fadingEdgeLength, int selectedPosition) { 9079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // first pixel we can draw the selection into 9089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int topSelectionPixel = childrenTop; 9099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (selectedPosition > 0) { 9109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project topSelectionPixel += fadingEdgeLength; 9119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return topSelectionPixel; 9139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 9149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 915499cb9f516062b654952d282f211bee44c31a3c2Winson Chung /** 916499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * Smoothly scroll to the specified adapter position. The view will 917499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * scroll such that the indicated position is displayed. 918499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * @param position Scroll to this adapter position. 919499cb9f516062b654952d282f211bee44c31a3c2Winson Chung */ 920499cb9f516062b654952d282f211bee44c31a3c2Winson Chung @android.view.RemotableViewMethod 921499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public void smoothScrollToPosition(int position) { 922499cb9f516062b654952d282f211bee44c31a3c2Winson Chung super.smoothScrollToPosition(position); 923499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 924499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 925499cb9f516062b654952d282f211bee44c31a3c2Winson Chung /** 926499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * Smoothly scroll to the specified adapter position offset. The view will 927499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * scroll such that the indicated position is displayed. 928499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * @param offset The amount to offset from the adapter position to scroll to. 929499cb9f516062b654952d282f211bee44c31a3c2Winson Chung */ 930499cb9f516062b654952d282f211bee44c31a3c2Winson Chung @android.view.RemotableViewMethod 931499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public void smoothScrollByOffset(int offset) { 932499cb9f516062b654952d282f211bee44c31a3c2Winson Chung super.smoothScrollByOffset(offset); 933499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 9349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 9369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Fills the list based on positioning the new selection relative to the old 9379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * selection. The new selection will be placed at, above, or below the 9389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * location of the new selection depending on how the selection is moving. 9399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The selection will then be pinned to the visible part of the screen, 9409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * excluding the edges that are faded. The list is then filled upwards and 9419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * downwards from there. 9429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 9439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param oldSel The old selected view. Useful for trying to put the new 9449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * selection in the same place 9459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param newSel The view that is to become selected. Useful for trying to 9469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * put the new selection in the same place 9479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param delta Which way we are moving 9489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childrenTop Where to start drawing children 9499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childrenBottom Last pixel where children can be drawn 9509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The view that currently has selection 9519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private View moveSelection(View oldSel, View newSel, int delta, int childrenTop, 9539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childrenBottom) { 9549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int fadingEdgeLength = getVerticalFadingEdgeLength(); 9559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int selectedPosition = mSelectedPosition; 9569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View sel; 9589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int topSelectionPixel = getTopSelectionPixel(childrenTop, fadingEdgeLength, 9609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedPosition); 9619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int bottomSelectionPixel = getBottomSelectionPixel(childrenTop, fadingEdgeLength, 9629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedPosition); 9639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (delta > 0) { 9659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 9669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Case 1: Scrolling down. 9679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 9709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Before After 9719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * | | | | 9729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * +-------+ +-------+ 9739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * | A | | A | 9749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * | 1 | => +-------+ 9759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * +-------+ | B | 9769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * | B | | 2 | 9779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * +-------+ +-------+ 9789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * | | | | 9799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 9809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Try to keep the top of the previously selected item where it was. 9819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * oldSel = A 9829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * sel = B 9839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 9849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Put oldSel (A) where it belongs 9869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project oldSel = makeAndAddView(selectedPosition - 1, oldSel.getTop(), true, 9879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mListPadding.left, false); 9889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int dividerHeight = mDividerHeight; 9909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Now put the new selection (B) below that 9929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = makeAndAddView(selectedPosition, oldSel.getBottom() + dividerHeight, true, 9939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mListPadding.left, true); 9949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Some of the newly selected item extends below the bottom of the list 9969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (sel.getBottom() > bottomSelectionPixel) { 9979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 9989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Find space available above the selection into which we can scroll upwards 9999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int spaceAbove = sel.getTop() - topSelectionPixel; 10009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Find space required to bring the bottom of the selected item fully into view 10029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int spaceBelow = sel.getBottom() - bottomSelectionPixel; 10039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Don't scroll more than half the height of the list 10059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int halfVerticalSpace = (childrenBottom - childrenTop) / 2; 10069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int offset = Math.min(spaceAbove, spaceBelow); 10079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project offset = Math.min(offset, halfVerticalSpace); 10089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // We placed oldSel, so offset that item 10109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project oldSel.offsetTopAndBottom(-offset); 10119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Now offset the selected item to get it into view 10129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel.offsetTopAndBottom(-offset); 10139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Fill in views above and below 10169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mStackFromBottom) { 10179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillUp(mSelectedPosition - 2, sel.getTop() - dividerHeight); 10189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adjustViewsUpOrDown(); 10199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillDown(mSelectedPosition + 1, sel.getBottom() + dividerHeight); 10209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 10219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillDown(mSelectedPosition + 1, sel.getBottom() + dividerHeight); 10229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adjustViewsUpOrDown(); 10239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillUp(mSelectedPosition - 2, sel.getTop() - dividerHeight); 10249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (delta < 0) { 10269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 10279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Case 2: Scrolling up. 10289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 10299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 10319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Before After 10329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * | | | | 10339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * +-------+ +-------+ 10349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * | A | | A | 10359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * +-------+ => | 1 | 10369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * | B | +-------+ 10379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * | 2 | | B | 10389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * +-------+ +-------+ 10399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * | | | | 10409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 10419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Try to keep the top of the item about to become selected where it was. 10429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * newSel = A 10439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * olSel = B 10449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 10459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (newSel != null) { 10479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Try to position the top of newSel (A) where it was before it was selected 10489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = makeAndAddView(selectedPosition, newSel.getTop(), true, mListPadding.left, 10499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project true); 10509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 10519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If (A) was not on screen and so did not have a view, position 10529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // it above the oldSel (B) 10539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = makeAndAddView(selectedPosition, oldSel.getTop(), false, mListPadding.left, 10549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project true); 10559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Some of the newly selected item extends above the top of the list 10589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (sel.getTop() < topSelectionPixel) { 10599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Find space required to bring the top of the selected item fully into view 10609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int spaceAbove = topSelectionPixel - sel.getTop(); 10619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Find space available below the selection into which we can scroll downwards 10639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int spaceBelow = bottomSelectionPixel - sel.getBottom(); 10649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Don't scroll more than half the height of the list 10669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int halfVerticalSpace = (childrenBottom - childrenTop) / 2; 10679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int offset = Math.min(spaceAbove, spaceBelow); 10689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project offset = Math.min(offset, halfVerticalSpace); 10699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Offset the selected item to get it into view 10719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel.offsetTopAndBottom(offset); 10729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Fill in views above and below 10759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillAboveAndBelow(sel, selectedPosition); 10769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 10779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int oldTop = oldSel.getTop(); 10799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 10819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Case 3: Staying still 10829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 10839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = makeAndAddView(selectedPosition, oldTop, true, mListPadding.left, true); 10849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // We're staying still... 10869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (oldTop < childrenTop) { 10879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // ... but the top of the old selection was off screen. 10889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // (This can happen if the data changes size out from under us) 10899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int newBottom = sel.getBottom(); 10909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (newBottom < childrenTop + 20) { 10919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Not enough visible -- bring it onscreen 10929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel.offsetTopAndBottom(childrenTop - sel.getTop()); 10939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 10969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Fill in views above and below 10979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillAboveAndBelow(sel, selectedPosition); 10989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 10999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return sel; 11019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11039bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell private class FocusSelector implements Runnable { 11049bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell private int mPosition; 11059bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell private int mPositionTop; 11069bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell 11079bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell public FocusSelector setup(int position, int top) { 11089bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell mPosition = position; 11099bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell mPositionTop = top; 11109bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell return this; 11119bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell } 11129bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell 11139bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell public void run() { 11149bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell setSelectionFromTop(mPosition, mPositionTop); 11159bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell } 11169bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell } 11179bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell 11189bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell @Override 11199bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell protected void onSizeChanged(int w, int h, int oldw, int oldh) { 11209bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell if (getChildCount() > 0) { 11219bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell View focusedChild = getFocusedChild(); 11229bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell if (focusedChild != null) { 11239bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell final int childPosition = mFirstPosition + indexOfChild(focusedChild); 11249bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell final int childBottom = focusedChild.getBottom(); 11259bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell final int offset = Math.max(0, childBottom - (h - mPaddingTop)); 11269bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell final int top = focusedChild.getTop() - offset; 11279bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell if (mFocusSelector == null) { 11289bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell mFocusSelector = new FocusSelector(); 11299bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell } 11309bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell post(mFocusSelector.setup(childPosition, top)); 11319bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell } 11329bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell } 11339bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell super.onSizeChanged(w, h, oldw, oldh); 11349bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell } 11359bf3c128509de5bd66222943a00acfcd1000cd62Adam Powell 11369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 11379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 11389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Sets up mListPadding 11399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.onMeasure(widthMeasureSpec, heightMeasureSpec); 11409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int widthMode = MeasureSpec.getMode(widthMeasureSpec); 11429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int heightMode = MeasureSpec.getMode(heightMeasureSpec); 11439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int widthSize = MeasureSpec.getSize(widthMeasureSpec); 11449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int heightSize = MeasureSpec.getSize(heightMeasureSpec); 11459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childWidth = 0; 11479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childHeight = 0; 1148189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn int childState = 0; 11499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mItemCount = mAdapter == null ? 0 : mAdapter.getCount(); 11519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mItemCount > 0 && (widthMode == MeasureSpec.UNSPECIFIED || 11529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightMode == MeasureSpec.UNSPECIFIED)) { 115321875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy final View child = obtainView(0, mIsScrap); 11549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureScrapChild(child, 0, widthMeasureSpec); 11569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childWidth = child.getMeasuredWidth(); 11589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeight = child.getMeasuredHeight(); 1159189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn childState = combineMeasuredStates(childState, child.getMeasuredState()); 11609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11619c3184cc162ee8c10eabd3f996629a9397a1f551Romain Guy if (recycleOnMeasure() && mRecycler.shouldRecycleViewType( 11629c3184cc162ee8c10eabd3f996629a9397a1f551Romain Guy ((LayoutParams) child.getLayoutParams()).viewType)) { 1163079e23575024e103358c982152afb7a720ae1a8aDianne Hackborn mRecycler.addScrapView(child, -1); 11649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (widthMode == MeasureSpec.UNSPECIFIED) { 11689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project widthSize = mListPadding.left + mListPadding.right + childWidth + 11699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project getVerticalScrollbarWidth(); 1170189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn } else { 1171189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn widthSize |= (childState&MEASURED_STATE_MASK); 11729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (heightMode == MeasureSpec.UNSPECIFIED) { 11759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightSize = mListPadding.top + mListPadding.bottom + childHeight + 11769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project getVerticalFadingEdgeLength() * 2; 11779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (heightMode == MeasureSpec.AT_MOST) { 11809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // TODO: after first layout we should maybe start at the first visible position, not 0 11819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project heightSize = measureHeightOfChildren(widthMeasureSpec, 0, NO_POSITION, heightSize, -1); 11829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1184189ee18d6c6483ad63cc864267328259e2e00b95Dianne Hackborn setMeasuredDimension(widthSize , heightSize); 11859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mWidthMeasureSpec = widthMeasureSpec; 11869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void measureScrapChild(View child, int position, int widthMeasureSpec) { 11899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LayoutParams p = (LayoutParams) child.getLayoutParams(); 11909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (p == null) { 1191aebd28f729fa28016d70551d0372ab7fcd56ee1aAdam Powell p = (AbsListView.LayoutParams) generateDefaultLayoutParams(); 11924df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project child.setLayoutParams(p); 11939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project p.viewType = mAdapter.getItemViewType(position); 11950bf88594c43ced48d862d122e3e84967b3b63658Romain Guy p.forceAdd = true; 11969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 11979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childWidthSpec = ViewGroup.getChildMeasureSpec(widthMeasureSpec, 11989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mListPadding.left + mListPadding.right, p.width); 11999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int lpHeight = p.height; 12009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childHeightSpec; 12019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lpHeight > 0) { 12029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeightSpec = MeasureSpec.makeMeasureSpec(lpHeight, MeasureSpec.EXACTLY); 12039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 12049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeightSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED); 12059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure(childWidthSpec, childHeightSpec); 12079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 12109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True to recycle the views used to measure this ListView in 12119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * UNSPECIFIED/AT_MOST modes, false otherwise. 12129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @hide 12139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1214bea95162ca25bd00b0479d93739b6283795c3986Konstantin Lopyrev @ViewDebug.ExportedProperty(category = "list") 12159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected boolean recycleOnMeasure() { 12169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 12179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 12209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Measures the height of the given range of children (inclusive) and 12219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * returns the height with this ListView's padding and divider heights 12229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * included. If maxHeight is provided, the measuring will stop when the 12239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * current height reaches maxHeight. 12249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 12259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param widthMeasureSpec The width measure spec to be given to a child's 12269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link View#measure(int, int)}. 12279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param startPosition The position of the first child to be shown. 12289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param endPosition The (inclusive) position of the last child to be 12299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * shown. Specify {@link #NO_POSITION} if the last child should be 12309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the last available child from the adapter. 12319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param maxHeight The maximum height that will be returned (if all the 12329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * children don't fit in this value, this value will be 12339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * returned). 12349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param disallowPartialChildPosition In general, whether the returned 12359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * height should only contain entire children. This is more 12369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * powerful--it is the first inclusive position at which partial 12379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * children will not be allowed. Example: it looks nice to have 12389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * at least 3 completely visible children, and in portrait this 12399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * will most likely fit; but in landscape there could be times 12409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * when even 2 children can not be completely shown, so a value 12419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * of 2 (remember, inclusive) would be good (assuming 12429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * startPosition is 0). 12439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The height of this ListView with the given children. 12449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 12459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int measureHeightOfChildren(int widthMeasureSpec, int startPosition, int endPosition, 12469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int maxHeight, int disallowPartialChildPosition) { 12479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final ListAdapter adapter = mAdapter; 12499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (adapter == null) { 12509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mListPadding.top + mListPadding.bottom; 12519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Include the padding of the list 12549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int returnedHeight = mListPadding.top + mListPadding.bottom; 12559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int dividerHeight = ((mDividerHeight > 0) && mDivider != null) ? mDividerHeight : 0; 12569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // The previous height value that was less than maxHeight and contained 12579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // no partial children 12589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int prevHeightWithoutPartialChild = 0; 12599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int i; 12609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View child; 12619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // mItemCount - 1 since endPosition parameter is inclusive 12639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project endPosition = (endPosition == NO_POSITION) ? adapter.getCount() - 1 : endPosition; 12649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final AbsListView.RecycleBin recycleBin = mRecycler; 12659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean recyle = recycleOnMeasure(); 126621875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy final boolean[] isScrap = mIsScrap; 12679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (i = startPosition; i <= endPosition; ++i) { 126921875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy child = obtainView(i, isScrap); 12709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureScrapChild(child, i, widthMeasureSpec); 12729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (i > 0) { 12749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Count the divider for all but one child 12759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project returnedHeight += dividerHeight; 12769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Recycle the view before we possibly return from the method 12799c3184cc162ee8c10eabd3f996629a9397a1f551Romain Guy if (recyle && recycleBin.shouldRecycleViewType( 12809c3184cc162ee8c10eabd3f996629a9397a1f551Romain Guy ((LayoutParams) child.getLayoutParams()).viewType)) { 1281079e23575024e103358c982152afb7a720ae1a8aDianne Hackborn recycleBin.addScrapView(child, -1); 12829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project returnedHeight += child.getMeasuredHeight(); 12859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (returnedHeight >= maxHeight) { 12879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // We went over, figure out which height to return. If returnedHeight > maxHeight, 12889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // then the i'th position did not fit completely. 12899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (disallowPartialChildPosition >= 0) // Disallowing is enabled (> -1) 12909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project && (i > disallowPartialChildPosition) // We've past the min pos 12919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project && (prevHeightWithoutPartialChild > 0) // We have a prev height 12929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project && (returnedHeight != maxHeight) // i'th child did not fit completely 12939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ? prevHeightWithoutPartialChild 12949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project : maxHeight; 12959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 12969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 12979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((disallowPartialChildPosition >= 0) && (i >= disallowPartialChildPosition)) { 12989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project prevHeightWithoutPartialChild = returnedHeight; 12999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // At this point, we went through the range of children, and they each 13039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // completely fit, so return the returnedHeight 13049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return returnedHeight; 13059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 13089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int findMotionRow(int y) { 13099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childCount = getChildCount(); 13109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childCount > 0) { 131184222e04252720cf681032e865db526ce4a612a4Adam Powell if (!mStackFromBottom) { 131284222e04252720cf681032e865db526ce4a612a4Adam Powell for (int i = 0; i < childCount; i++) { 131384222e04252720cf681032e865db526ce4a612a4Adam Powell View v = getChildAt(i); 131484222e04252720cf681032e865db526ce4a612a4Adam Powell if (y <= v.getBottom()) { 131584222e04252720cf681032e865db526ce4a612a4Adam Powell return mFirstPosition + i; 131684222e04252720cf681032e865db526ce4a612a4Adam Powell } 131784222e04252720cf681032e865db526ce4a612a4Adam Powell } 131884222e04252720cf681032e865db526ce4a612a4Adam Powell } else { 131984222e04252720cf681032e865db526ce4a612a4Adam Powell for (int i = childCount - 1; i >= 0; i--) { 132084222e04252720cf681032e865db526ce4a612a4Adam Powell View v = getChildAt(i); 132184222e04252720cf681032e865db526ce4a612a4Adam Powell if (y >= v.getTop()) { 132284222e04252720cf681032e865db526ce4a612a4Adam Powell return mFirstPosition + i; 132384222e04252720cf681032e865db526ce4a612a4Adam Powell } 13249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return INVALID_POSITION; 13289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 13319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Put a specific item at a specific location on the screen and then build 13329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * up and down from there. 13339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 13349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position The reference view to use as the starting point 13359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param top Pixel offset from the top of this view to the top of the 13369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * reference view. 13379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 13389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The selected view, or null if the selected view is outside the 13399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * visible area. 13409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 13419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private View fillSpecific(int position, int top) { 13429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean tempIsSelected = position == mSelectedPosition; 13439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View temp = makeAndAddView(position, top, true, mListPadding.left, tempIsSelected); 13449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Possibly changed again in fillUp if we add rows above this one. 13459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFirstPosition = position; 13469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View above; 13489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View below; 13499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int dividerHeight = mDividerHeight; 13519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mStackFromBottom) { 13529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project above = fillUp(position - 1, temp.getTop() - dividerHeight); 13539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // This will correct for the top of the first view not touching the top of the list 13549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adjustViewsUpOrDown(); 13559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project below = fillDown(position + 1, temp.getBottom() + dividerHeight); 13569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childCount = getChildCount(); 13579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childCount > 0) { 13589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project correctTooHigh(childCount); 13599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 13619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project below = fillDown(position + 1, temp.getBottom() + dividerHeight); 13629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // This will correct for the bottom of the last view not touching the bottom of the list 13639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adjustViewsUpOrDown(); 13649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project above = fillUp(position - 1, temp.getTop() - dividerHeight); 13659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childCount = getChildCount(); 13669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childCount > 0) { 13679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project correctTooLow(childCount); 13689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (tempIsSelected) { 13729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return temp; 13739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (above != null) { 13749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return above; 13759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 13769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return below; 13779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 13819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Check if we have dragged the bottom of the list too high (we have pushed the 13829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * top element off the top of the screen when we did not need to). Correct by sliding 13839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * everything back down. 13849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 13859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childCount Number of children 13869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 13879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void correctTooHigh(int childCount) { 13889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // First see if the last item is visible. If it is not, it is OK for the 13899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // top of the list to be pushed up. 13909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int lastPosition = mFirstPosition + childCount - 1; 13919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lastPosition == mItemCount - 1 && childCount > 0) { 13929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Get the last child ... 13949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View lastChild = getChildAt(childCount - 1); 13959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // ... and its bottom edge 13979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int lastBottom = lastChild.getBottom(); 13989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 13999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // This is bottom of our drawable area 14009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int end = (mBottom - mTop) - mListPadding.bottom; 14019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // This is how far the bottom edge of the last view is from the bottom of the 14039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // drawable area 14049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int bottomOffset = end - lastBottom; 14059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View firstChild = getChildAt(0); 14069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int firstTop = firstChild.getTop(); 14079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Make sure we are 1) Too high, and 2) Either there are more rows above the 14099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // first row or the first row is scrolled off the top of the drawable area 14109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (bottomOffset > 0 && (mFirstPosition > 0 || firstTop < mListPadding.top)) { 14119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mFirstPosition == 0) { 14129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Don't pull the top too far down 14139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bottomOffset = Math.min(bottomOffset, mListPadding.top - firstTop); 14149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Move everything down 14169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project offsetChildrenTopAndBottom(bottomOffset); 14179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mFirstPosition > 0) { 14189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Fill the gap that was opened above mFirstPosition with more rows, if 14199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // possible 14209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fillUp(mFirstPosition - 1, firstChild.getTop() - mDividerHeight); 14219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Close up the remaining gap 14229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adjustViewsUpOrDown(); 14239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 14309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Check if we have dragged the bottom of the list too low (we have pushed the 14319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * bottom element off the bottom of the screen when we did not need to). Correct by sliding 14329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * everything back up. 14339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 14349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childCount Number of children 14359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 14369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void correctTooLow(int childCount) { 14379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // First see if the first item is visible. If it is not, it is OK for the 14389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // bottom of the list to be pushed down. 14399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mFirstPosition == 0 && childCount > 0) { 14409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Get the first child ... 14429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View firstChild = getChildAt(0); 14439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // ... and its top edge 14459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int firstTop = firstChild.getTop(); 14469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // This is top of our drawable area 14489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int start = mListPadding.top; 14499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // This is bottom of our drawable area 14519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int end = (mBottom - mTop) - mListPadding.bottom; 14529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // This is how far the top edge of the first view is from the top of the 14549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // drawable area 14559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int topOffset = firstTop - start; 14569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View lastChild = getChildAt(childCount - 1); 14579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int lastBottom = lastChild.getBottom(); 14589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int lastPosition = mFirstPosition + childCount - 1; 14599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Make sure we are 1) Too low, and 2) Either there are more rows below the 14619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // last row or the last row is scrolled off the bottom of the drawable area 14626198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy if (topOffset > 0) { 14636198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy if (lastPosition < mItemCount - 1 || lastBottom > end) { 14646198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy if (lastPosition == mItemCount - 1) { 14656198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy // Don't pull the bottom too far up 14666198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy topOffset = Math.min(topOffset, lastBottom - end); 14676198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy } 14686198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy // Move everything up 14696198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy offsetChildrenTopAndBottom(-topOffset); 14706198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy if (lastPosition < mItemCount - 1) { 14716198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy // Fill the gap that was opened below the last position with more rows, if 14726198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy // possible 14736198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy fillDown(lastPosition + 1, lastChild.getBottom() + mDividerHeight); 14746198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy // Close up the remaining gap 14756198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy adjustViewsUpOrDown(); 14766198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy } 14776198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy } else if (lastPosition == mItemCount - 1) { 14786198ae8468668bf7374535c2eeeab8de7f8e7e99Romain Guy adjustViewsUpOrDown(); 14799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 14859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void layoutChildren() { 14869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean blockLayoutRequests = mBlockLayoutRequests; 1487d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette if (blockLayoutRequests) { 14884df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project return; 14899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1491d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette mBlockLayoutRequests = true; 1492d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette 14939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 14949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.layoutChildren(); 14959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invalidate(); 14979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 14989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mAdapter == null) { 14999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project resetList(); 15009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invokeOnItemScrollListener(); 15019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 15029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1504d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette final int childrenTop = mListPadding.top; 1505d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette final int childrenBottom = mBottom - mTop - mListPadding.bottom; 1506d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette final int childCount = getChildCount(); 15079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1508ead0d4d8282b35a10bf8816cd99a62a8499d9031Romain Guy int index = 0; 15099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int delta = 0; 15109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View sel; 15129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View oldSel = null; 15139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View oldFirst = null; 15149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View newSel = null; 15159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remember stuff we will need down below 15179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (mLayoutMode) { 15189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case LAYOUT_SET_SELECTION: 15199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project index = mNextSelectedPosition - mFirstPosition; 15209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (index >= 0 && index < childCount) { 15219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project newSel = getChildAt(index); 15229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 15249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case LAYOUT_FORCE_TOP: 15259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case LAYOUT_FORCE_BOTTOM: 15269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case LAYOUT_SPECIFIC: 15279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case LAYOUT_SYNC: 15289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 15299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case LAYOUT_MOVE_SELECTION: 15309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project default: 15319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remember the previously selected view 15329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project index = mSelectedPosition - mFirstPosition; 15339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (index >= 0 && index < childCount) { 15349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project oldSel = getChildAt(index); 15359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Remember the previous first child 15389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project oldFirst = getChildAt(0); 15399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mNextSelectedPosition >= 0) { 15419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project delta = mNextSelectedPosition - mSelectedPosition; 15429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Caution: newSel might be null 15459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project newSel = getChildAt(index + delta); 15469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean dataChanged = mDataChanged; 15509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (dataChanged) { 15519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handleDataChanged(); 15529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Handle the empty set by removing all views that are visible 15559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // and calling it a day 15569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mItemCount == 0) { 15579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project resetList(); 15589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invokeOnItemScrollListener(); 15599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 1560b45f124a041adf81b3ac8b8dec6b396e751e92d7Romain Guy } else if (mItemCount != mAdapter.getCount()) { 1561b45f124a041adf81b3ac8b8dec6b396e751e92d7Romain Guy throw new IllegalStateException("The content of the adapter has changed but " 1562b45f124a041adf81b3ac8b8dec6b396e751e92d7Romain Guy + "ListView did not receive a notification. Make sure the content of " 15637d8314db41707a98afb269a78e7bc90ac75d37fcAlan Viverette + "your adapter is not modified from a background thread, but only from " 15647d8314db41707a98afb269a78e7bc90ac75d37fcAlan Viverette + "the UI thread. Make sure your adapter calls notifyDataSetChanged() " 15657d8314db41707a98afb269a78e7bc90ac75d37fcAlan Viverette + "when its content changes. [in ListView(" + getId() + ", " + getClass() 15663940f2df36fbe6a712c88655fc78244977ebd0abOwen Lin + ") with Adapter(" + mAdapter.getClass() + ")]"); 15679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelectedPositionInt(mNextSelectedPosition); 15709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 15716820751c0ad396328da39adfb3756ffc838c0cc7Alan Viverette // Remember which child, if any, had accessibility focus. 15726820751c0ad396328da39adfb3756ffc838c0cc7Alan Viverette final int accessibilityFocusPosition; 15736820751c0ad396328da39adfb3756ffc838c0cc7Alan Viverette final View accessFocusedChild = getAccessibilityFocusedChild(); 15746820751c0ad396328da39adfb3756ffc838c0cc7Alan Viverette if (accessFocusedChild != null) { 15756820751c0ad396328da39adfb3756ffc838c0cc7Alan Viverette accessibilityFocusPosition = getPositionForView(accessFocusedChild); 15766820751c0ad396328da39adfb3756ffc838c0cc7Alan Viverette accessFocusedChild.setHasTransientState(true); 15776820751c0ad396328da39adfb3756ffc838c0cc7Alan Viverette } else { 15786820751c0ad396328da39adfb3756ffc838c0cc7Alan Viverette accessibilityFocusPosition = INVALID_POSITION; 1579b53c5f6b6f84518145c5cbfd3cc1729758fbc7c0Alan Viverette } 1580b53c5f6b6f84518145c5cbfd3cc1729758fbc7c0Alan Viverette 1581d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette // Ensure the child containing focus, if any, has transient state. 1582d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette // If the list data hasn't changed, or if the adapter has stable 1583d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette // IDs, this will maintain focus. 1584d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette final View focusedChild = getFocusedChild(); 1585d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette if (focusedChild != null) { 1586d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette focusedChild.setHasTransientState(true); 1587d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette } 1588d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette 15899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Pull all children into the RecycleBin. 15909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // These views will be reused if possible 15919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int firstPosition = mFirstPosition; 15929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final RecycleBin recycleBin = mRecycler; 15939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (dataChanged) { 15949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < childCount; i++) { 1595079e23575024e103358c982152afb7a720ae1a8aDianne Hackborn recycleBin.addScrapView(getChildAt(i), firstPosition+i); 15969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 15979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 15989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project recycleBin.fillActiveViews(childCount, firstPosition); 15999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Clear out old views 16029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project detachAllViewsFromParent(); 1603539ee8716b4f81260bab2e9f3dc5d88d81c99985Adam Powell recycleBin.removeSkippedScrap(); 16049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (mLayoutMode) { 16069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case LAYOUT_SET_SELECTION: 16079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (newSel != null) { 16089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = fillFromSelection(newSel.getTop(), childrenTop, childrenBottom); 16099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 16109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = fillFromMiddle(childrenTop, childrenBottom); 16119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 16139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case LAYOUT_SYNC: 16149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = fillSpecific(mSyncPosition, mSpecificTop); 16159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 16169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case LAYOUT_FORCE_BOTTOM: 16179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = fillUp(mItemCount - 1, childrenBottom); 16189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adjustViewsUpOrDown(); 16199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 16209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case LAYOUT_FORCE_TOP: 16219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFirstPosition = 0; 16229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = fillFromTop(childrenTop); 16239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project adjustViewsUpOrDown(); 16249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 16259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case LAYOUT_SPECIFIC: 16269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = fillSpecific(reconcileSelectedPosition(), mSpecificTop); 16279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 16289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case LAYOUT_MOVE_SELECTION: 16299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = moveSelection(oldSel, newSel, delta, childrenTop, childrenBottom); 16309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 16319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project default: 16329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (childCount == 0) { 16339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mStackFromBottom) { 16349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int position = lookForSelectablePosition(0, true); 16359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelectedPositionInt(position); 16369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = fillFromTop(childrenTop); 16379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 16389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int position = lookForSelectablePosition(mItemCount - 1, false); 16399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelectedPositionInt(position); 16409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = fillUp(mItemCount - 1, childrenBottom); 16419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 16439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mSelectedPosition >= 0 && mSelectedPosition < mItemCount) { 16449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = fillSpecific(mSelectedPosition, 16459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project oldSel == null ? childrenTop : oldSel.getTop()); 16469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (mFirstPosition < mItemCount) { 16479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = fillSpecific(mFirstPosition, 16489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project oldFirst == null ? childrenTop : oldFirst.getTop()); 16499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 16509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project sel = fillSpecific(0, childrenTop); 16519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 16549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Flush any cached views that did not get reused above 16579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project recycleBin.scrapActiveViews(); 16589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (sel != null) { 1660d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette final boolean shouldPlaceFocus = mItemsCanFocus && hasFocus(); 1661d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette final boolean maintainedFocus = focusedChild != null && focusedChild.hasFocus(); 1662d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette if (shouldPlaceFocus && !maintainedFocus && !sel.hasFocus()) { 1663d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette if (sel.requestFocus()) { 1664d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette // Successfully placed focus, clear selection. 1665d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette sel.setSelected(false); 1666d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette mSelectorRect.setEmpty(); 1667d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette } else { 1668d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette // Failed to place focus, clear current (invalid) focus. 16693616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy final View focused = getFocusedChild(); 16703616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy if (focused != null) { 16713616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy focused.clearFocus(); 16723616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy } 1673079e23575024e103358c982152afb7a720ae1a8aDianne Hackborn positionSelector(INVALID_POSITION, sel); 16743616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy } 16753616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy } else { 1676079e23575024e103358c982152afb7a720ae1a8aDianne Hackborn positionSelector(INVALID_POSITION, sel); 16773616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy } 16783616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy mSelectedTop = sel.getTop(); 16799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 1680d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette // If the user's finger is down, select the motion position. 1681d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette // Otherwise, clear selection. 1682d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette if (mTouchMode == TOUCH_MODE_TAP || mTouchMode == TOUCH_MODE_DONE_WAITING) { 1683d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette final View child = getChildAt(mMotionPosition - mFirstPosition); 1684d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette if (child != null) { 1685d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette positionSelector(mMotionPosition, child); 1686d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette } 16873616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy } else { 16883616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy mSelectedTop = 0; 16893616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy mSelectorRect.setEmpty(); 16903616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy } 16919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 16929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 16936820751c0ad396328da39adfb3756ffc838c0cc7Alan Viverette if (accessFocusedChild != null) { 16946820751c0ad396328da39adfb3756ffc838c0cc7Alan Viverette accessFocusedChild.setHasTransientState(false); 16956820751c0ad396328da39adfb3756ffc838c0cc7Alan Viverette 16966820751c0ad396328da39adfb3756ffc838c0cc7Alan Viverette // If we failed to maintain accessibility focus on the previous 16976820751c0ad396328da39adfb3756ffc838c0cc7Alan Viverette // view, attempt to restore it to the previous position. 16986820751c0ad396328da39adfb3756ffc838c0cc7Alan Viverette if (!accessFocusedChild.isAccessibilityFocused() 16996820751c0ad396328da39adfb3756ffc838c0cc7Alan Viverette && accessibilityFocusPosition != INVALID_POSITION) { 17006820751c0ad396328da39adfb3756ffc838c0cc7Alan Viverette // Bound the position within the visible children. 17016820751c0ad396328da39adfb3756ffc838c0cc7Alan Viverette final int position = MathUtils.constrain( 17026820751c0ad396328da39adfb3756ffc838c0cc7Alan Viverette accessibilityFocusPosition - mFirstPosition, 0, getChildCount() - 1); 17036820751c0ad396328da39adfb3756ffc838c0cc7Alan Viverette final View restoreView = getChildAt(position); 17046820751c0ad396328da39adfb3756ffc838c0cc7Alan Viverette if (restoreView != null) { 17056820751c0ad396328da39adfb3756ffc838c0cc7Alan Viverette restoreView.requestAccessibilityFocus(); 17066820751c0ad396328da39adfb3756ffc838c0cc7Alan Viverette } 170730ee76cf05f785bbf819b71954242c835c597ce1alanv } 170830ee76cf05f785bbf819b71954242c835c597ce1alanv } 170930ee76cf05f785bbf819b71954242c835c597ce1alanv 1710d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette if (focusedChild != null) { 1711d44696c4cfdda1e7e4e10a21b68f54ce5a4a459dAlan Viverette focusedChild.setHasTransientState(false); 17129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutMode = LAYOUT_NORMAL; 17159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDataChanged = false; 1716161abf3d44feebb8462f7d0cbee81574d666234bAdam Powell if (mPositionScrollAfterLayout != null) { 1717161abf3d44feebb8462f7d0cbee81574d666234bAdam Powell post(mPositionScrollAfterLayout); 1718161abf3d44feebb8462f7d0cbee81574d666234bAdam Powell mPositionScrollAfterLayout = null; 1719161abf3d44feebb8462f7d0cbee81574d666234bAdam Powell } 17209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNeedSync = false; 17219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setNextSelectedPositionInt(mSelectedPosition); 17229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project updateScrollIndicators(); 17249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mItemCount > 0) { 17269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkSelectionChanged(); 17279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invokeOnItemScrollListener(); 17309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } finally { 17319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!blockLayoutRequests) { 17329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBlockLayoutRequests = false; 17339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 17389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Obtain the view and add it to our list of children. The view can be made 17399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * fresh, converted from an unused view, or used as is if it was in the 17409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * recycle bin. 17419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 17429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position Logical position in the list 17439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y Top or bottom edge of the view to add 17449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param flow If flow is true, align top edge to y. If false, align bottom 17459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * edge to y. 17469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childrenLeft Left edge where children should be positioned 17479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param selected Is this position selected? 17489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return View that was added 17499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 17509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private View makeAndAddView(int position, int y, boolean flow, int childrenLeft, 17519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean selected) { 17529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View child; 17539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mDataChanged) { 1756079e23575024e103358c982152afb7a720ae1a8aDianne Hackborn // Try to use an existing view for this position 17579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child = mRecycler.getActiveView(position); 17589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child != null) { 17599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Found it -- we're using an existing child 17609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // This just needs to be positioned 17619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setupChild(child, position, y, flow, childrenLeft, selected, true); 17629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return child; 17649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Make a new view for this position, or convert an unused view if possible 176821875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy child = obtainView(position, mIsScrap); 17699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // This needs to be positioned and measured 177121875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy setupChild(child, position, y, flow, childrenLeft, selected, mIsScrap[0]); 17729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return child; 17749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 17759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 17769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 17779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Add a view as a child and make sure it is measured (if necessary) and 17789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * positioned properly. 17799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 17809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child The view to add 17819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position The position of this child 17829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y The y position relative to which this view will be positioned 17839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param flowDown If true, align top edge to y. If false, align bottom 17849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * edge to y. 17859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childrenLeft Left edge where children should be positioned 17869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param selected Is this position selected? 17879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param recycled Has this view been pulled from the recycle bin? If so it 17889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * does not need to be remeasured. 17899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 17909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void setupChild(View child, int position, int y, boolean flowDown, int childrenLeft, 17919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean selected, boolean recycled) { 17925fade8c69aef621312232ef0647502d7a63990b9Romain Guy Trace.traceBegin(Trace.TRACE_TAG_VIEW, "setupListItem"); 17935fade8c69aef621312232ef0647502d7a63990b9Romain Guy 17949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean isSelected = selected && shouldShowSelector(); 17959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean updateChildSelected = isSelected != child.isSelected(); 17963616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy final int mode = mTouchMode; 17973616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy final boolean isPressed = mode > TOUCH_MODE_DOWN && mode < TOUCH_MODE_SCROLL && 17983616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy mMotionPosition == position; 17993616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy final boolean updateChildPressed = isPressed != child.isPressed(); 18009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean needToMeasure = !recycled || updateChildSelected || child.isLayoutRequested(); 18019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Respect layout params that are already in the view. Otherwise make some up... 18039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // noinspection unchecked 18049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project AbsListView.LayoutParams p = (AbsListView.LayoutParams) child.getLayoutParams(); 18059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (p == null) { 1806aebd28f729fa28016d70551d0372ab7fcd56ee1aAdam Powell p = (AbsListView.LayoutParams) generateDefaultLayoutParams(); 18079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project p.viewType = mAdapter.getItemViewType(position); 18099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18100bf88594c43ced48d862d122e3e84967b3b63658Romain Guy if ((recycled && !p.forceAdd) || (p.recycledHeaderFooter && 1811c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project p.viewType == AdapterView.ITEM_VIEW_TYPE_HEADER_OR_FOOTER)) { 18129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project attachViewToParent(child, flowDown ? -1 : 0, p); 18139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 18140bf88594c43ced48d862d122e3e84967b3b63658Romain Guy p.forceAdd = false; 18154df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project if (p.viewType == AdapterView.ITEM_VIEW_TYPE_HEADER_OR_FOOTER) { 18164df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project p.recycledHeaderFooter = true; 18174df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project } 18189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project addViewInLayout(child, flowDown ? -1 : 0, p, true); 18199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (updateChildSelected) { 18229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.setSelected(isSelected); 18239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18253616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy if (updateChildPressed) { 18263616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy child.setPressed(isPressed); 18273616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy } 18283616a412cbd620168fd87ce83978d83a9c0621c6Romain Guy 18299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mChoiceMode != CHOICE_MODE_NONE && mCheckStates != null) { 18309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child instanceof Checkable) { 18319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ((Checkable) child).setChecked(mCheckStates.get(position)); 1832d0fa371f276fde32d81c037006941bc93da0bb03Dianne Hackborn } else if (getContext().getApplicationInfo().targetSdkVersion 1833d0fa371f276fde32d81c037006941bc93da0bb03Dianne Hackborn >= android.os.Build.VERSION_CODES.HONEYCOMB) { 1834d0fa371f276fde32d81c037006941bc93da0bb03Dianne Hackborn child.setActivated(mCheckStates.get(position)); 18359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (needToMeasure) { 18399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childWidthSpec = ViewGroup.getChildMeasureSpec(mWidthMeasureSpec, 18409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mListPadding.left + mListPadding.right, p.width); 18419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int lpHeight = p.height; 18429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childHeightSpec; 18439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lpHeight > 0) { 18449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeightSpec = MeasureSpec.makeMeasureSpec(lpHeight, MeasureSpec.EXACTLY); 18459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 18469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeightSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED); 18479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure(childWidthSpec, childHeightSpec); 18499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 18509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project cleanupLayoutState(child); 18519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int w = child.getMeasuredWidth(); 18549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int h = child.getMeasuredHeight(); 18559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childTop = flowDown ? y : y - h; 18569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (needToMeasure) { 18589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childRight = childrenLeft + w; 18599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childBottom = childTop + h; 18609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.layout(childrenLeft, childTop, childRight, childBottom); 18619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 18629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.offsetLeftAndRight(childrenLeft - child.getLeft()); 18639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.offsetTopAndBottom(childTop - child.getTop()); 18649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mCachingStarted && !child.isDrawingCacheEnabled()) { 18679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.setDrawingCacheEnabled(true); 18689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1869079e23575024e103358c982152afb7a720ae1a8aDianne Hackborn 1870079e23575024e103358c982152afb7a720ae1a8aDianne Hackborn if (recycled && (((AbsListView.LayoutParams)child.getLayoutParams()).scrappedFromPosition) 1871079e23575024e103358c982152afb7a720ae1a8aDianne Hackborn != position) { 1872079e23575024e103358c982152afb7a720ae1a8aDianne Hackborn child.jumpDrawablesToCurrentState(); 1873079e23575024e103358c982152afb7a720ae1a8aDianne Hackborn } 18745fade8c69aef621312232ef0647502d7a63990b9Romain Guy 18755fade8c69aef621312232ef0647502d7a63990b9Romain Guy Trace.traceEnd(Trace.TRACE_TAG_VIEW); 18769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 18799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected boolean canAnimate() { 18809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return super.canAnimate() && mItemCount > 0; 18819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 18849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sets the currently selected item. If in touch mode, the item will not be selected 18859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * but it will still be positioned appropriately. If the specified selection position 18869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * is less than 0, then the item at position 0 will be selected. 18879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 18889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position Index (starting at 0) of the data item to be selected. 18899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 18909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 18919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setSelection(int position) { 18929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelectionFromTop(position, 0); 18939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 18949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 18959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 18969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sets the selected item and positions the selection y pixels from the top edge 18979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * of the ListView. (If in touch mode, the item will not be selected but it will 18989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * still be positioned appropriately.) 18999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 19009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position Index (starting at 0) of the data item to be selected. 19019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param y The distance from the top edge of the ListView (plus padding) that the 19029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * item will be positioned. 19039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 19049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setSelectionFromTop(int position, int y) { 19059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mAdapter == null) { 19069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 19079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!isInTouchMode()) { 19109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project position = lookForSelectablePosition(position, true); 19119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (position >= 0) { 19129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setNextSelectedPositionInt(position); 19139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 19159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mResurrectToPosition = position; 19169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (position >= 0) { 19199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutMode = LAYOUT_SPECIFIC; 19209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSpecificTop = mListPadding.top + y; 19219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mNeedSync) { 19239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSyncPosition = position; 19249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSyncRowId = mAdapter.getItemId(position); 19259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19271fa179ef41c06bd19da70fd9bf95741238791940Adam Powell if (mPositionScroller != null) { 19281fa179ef41c06bd19da70fd9bf95741238791940Adam Powell mPositionScroller.stop(); 19291fa179ef41c06bd19da70fd9bf95741238791940Adam Powell } 19309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 19319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 19359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Makes the item at the supplied position selected. 1936f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron * 19379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position the position of the item to select 19389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 19399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 19409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void setSelectionInt(int position) { 19419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setNextSelectedPositionInt(position); 1942f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron boolean awakeScrollbars = false; 1943f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron 1944f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron final int selectedPosition = mSelectedPosition; 1945f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron 1946f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron if (selectedPosition >= 0) { 1947f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron if (position == selectedPosition - 1) { 1948f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron awakeScrollbars = true; 1949f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron } else if (position == selectedPosition + 1) { 1950f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron awakeScrollbars = true; 1951f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron } 1952f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron } 1953f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron 19541fa179ef41c06bd19da70fd9bf95741238791940Adam Powell if (mPositionScroller != null) { 19551fa179ef41c06bd19da70fd9bf95741238791940Adam Powell mPositionScroller.stop(); 19561fa179ef41c06bd19da70fd9bf95741238791940Adam Powell } 19571fa179ef41c06bd19da70fd9bf95741238791940Adam Powell 19589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project layoutChildren(); 1959f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron 1960f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron if (awakeScrollbars) { 1961f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron awakenScrollBars(); 1962f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron } 19639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 19669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Find a position that can be selected (i.e., is not a separator). 19679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 19689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param position The starting position to look at. 19699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param lookDown Whether to look down for other positions. 19709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The next selectable position starting at position and then searching either up or 19719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * down. Returns {@link #INVALID_POSITION} if nothing can be found. 19729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 19739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 19749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int lookForSelectablePosition(int position, boolean lookDown) { 19759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final ListAdapter adapter = mAdapter; 19769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (adapter == null || isInTouchMode()) { 19779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return INVALID_POSITION; 19789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 19809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = adapter.getCount(); 19819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mAreAllItemsSelectable) { 19829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lookDown) { 19839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project position = Math.max(0, position); 19849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while (position < count && !adapter.isEnabled(position)) { 19859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project position++; 19869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 19889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project position = Math.min(position, count - 1); 19899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while (position >= 0 && !adapter.isEnabled(position)) { 19909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project position--; 19919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1993af9c5ea240746de088549261a505895cbf4882edAlan Viverette } 1994af9c5ea240746de088549261a505895cbf4882edAlan Viverette 1995af9c5ea240746de088549261a505895cbf4882edAlan Viverette if (position < 0 || position >= count) { 1996af9c5ea240746de088549261a505895cbf4882edAlan Viverette return INVALID_POSITION; 1997af9c5ea240746de088549261a505895cbf4882edAlan Viverette } 1998af9c5ea240746de088549261a505895cbf4882edAlan Viverette 1999af9c5ea240746de088549261a505895cbf4882edAlan Viverette return position; 2000af9c5ea240746de088549261a505895cbf4882edAlan Viverette } 20019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2002af9c5ea240746de088549261a505895cbf4882edAlan Viverette /** 2003af9c5ea240746de088549261a505895cbf4882edAlan Viverette * Find a position that can be selected (i.e., is not a separator). If there 2004af9c5ea240746de088549261a505895cbf4882edAlan Viverette * are no selectable positions in the specified direction from the starting 2005af9c5ea240746de088549261a505895cbf4882edAlan Viverette * position, searches in the opposite direction from the starting position 2006af9c5ea240746de088549261a505895cbf4882edAlan Viverette * to the current position. 2007af9c5ea240746de088549261a505895cbf4882edAlan Viverette * 2008af9c5ea240746de088549261a505895cbf4882edAlan Viverette * @param current the current position 2009af9c5ea240746de088549261a505895cbf4882edAlan Viverette * @param position the starting position 2010af9c5ea240746de088549261a505895cbf4882edAlan Viverette * @param lookDown whether to look down for other positions 2011af9c5ea240746de088549261a505895cbf4882edAlan Viverette * @return the next selectable position, or {@link #INVALID_POSITION} if 2012af9c5ea240746de088549261a505895cbf4882edAlan Viverette * nothing can be found 2013af9c5ea240746de088549261a505895cbf4882edAlan Viverette */ 2014af9c5ea240746de088549261a505895cbf4882edAlan Viverette int lookForSelectablePositionAfter(int current, int position, boolean lookDown) { 2015af9c5ea240746de088549261a505895cbf4882edAlan Viverette final ListAdapter adapter = mAdapter; 2016af9c5ea240746de088549261a505895cbf4882edAlan Viverette if (adapter == null || isInTouchMode()) { 2017af9c5ea240746de088549261a505895cbf4882edAlan Viverette return INVALID_POSITION; 2018af9c5ea240746de088549261a505895cbf4882edAlan Viverette } 2019af9c5ea240746de088549261a505895cbf4882edAlan Viverette 2020af9c5ea240746de088549261a505895cbf4882edAlan Viverette // First check after the starting position in the specified direction. 2021af9c5ea240746de088549261a505895cbf4882edAlan Viverette final int after = lookForSelectablePosition(position, lookDown); 2022af9c5ea240746de088549261a505895cbf4882edAlan Viverette if (after != INVALID_POSITION) { 2023af9c5ea240746de088549261a505895cbf4882edAlan Viverette return after; 2024af9c5ea240746de088549261a505895cbf4882edAlan Viverette } 2025af9c5ea240746de088549261a505895cbf4882edAlan Viverette 2026af9c5ea240746de088549261a505895cbf4882edAlan Viverette // Then check between the starting position and the current position. 2027af9c5ea240746de088549261a505895cbf4882edAlan Viverette final int count = adapter.getCount(); 2028af9c5ea240746de088549261a505895cbf4882edAlan Viverette current = MathUtils.constrain(current, -1, count - 1); 2029af9c5ea240746de088549261a505895cbf4882edAlan Viverette if (lookDown) { 2030af9c5ea240746de088549261a505895cbf4882edAlan Viverette position = Math.min(position - 1, count - 1); 2031af9c5ea240746de088549261a505895cbf4882edAlan Viverette while ((position > current) && !adapter.isEnabled(position)) { 2032af9c5ea240746de088549261a505895cbf4882edAlan Viverette position--; 2033af9c5ea240746de088549261a505895cbf4882edAlan Viverette } 2034af9c5ea240746de088549261a505895cbf4882edAlan Viverette if (position <= current) { 20359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return INVALID_POSITION; 20369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 2038af9c5ea240746de088549261a505895cbf4882edAlan Viverette position = Math.max(0, position + 1); 2039af9c5ea240746de088549261a505895cbf4882edAlan Viverette while ((position < current) && !adapter.isEnabled(position)) { 2040af9c5ea240746de088549261a505895cbf4882edAlan Viverette position++; 2041af9c5ea240746de088549261a505895cbf4882edAlan Viverette } 2042af9c5ea240746de088549261a505895cbf4882edAlan Viverette if (position >= current) { 20439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return INVALID_POSITION; 20449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2046af9c5ea240746de088549261a505895cbf4882edAlan Viverette 2047af9c5ea240746de088549261a505895cbf4882edAlan Viverette return position; 20489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 20509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 20519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * setSelectionAfterHeaderView set the selection to be the first list item 20529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * after the header views. 20539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 20549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setSelectionAfterHeaderView() { 20559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = mHeaderViewInfos.size(); 20569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (count > 0) { 20579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNextSelectedPosition = 0; 20589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 20599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 20619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mAdapter != null) { 20629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelection(count); 20639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 20649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mNextSelectedPosition = count; 20659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutMode = LAYOUT_SET_SELECTION; 20669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 20689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 20709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 20719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean dispatchKeyEvent(KeyEvent event) { 20729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Dispatch in the normal way 20739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean handled = super.dispatchKeyEvent(event); 20749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!handled) { 20759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If we didn't handle it... 20769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View focused = getFocusedChild(); 20779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (focused != null && event.getAction() == KeyEvent.ACTION_DOWN) { 20789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // ... and our focused child didn't handle it 20799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // ... give it to ourselves so we can scroll if necessary 20809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handled = onKeyDown(event.getKeyCode(), event); 20819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return handled; 20849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 20869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 20879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean onKeyDown(int keyCode, KeyEvent event) { 20889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return commonKey(keyCode, 1, event); 20899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 20919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 20929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 20939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return commonKey(keyCode, repeatCount, event); 20949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 20969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 20979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean onKeyUp(int keyCode, KeyEvent event) { 20989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return commonKey(keyCode, 1, event); 20999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 21019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean commonKey(int keyCode, int count, KeyEvent event) { 210231986b5b696c399b356c8819cb581441027bef36Adam Powell if (mAdapter == null || !isAttachedToWindow()) { 21039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 21049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 21069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mDataChanged) { 21079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project layoutChildren(); 21089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 21109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean handled = false; 21119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int action = event.getAction(); 21129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 21139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (action != KeyEvent.ACTION_UP) { 21149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (keyCode) { 21159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_DPAD_UP: 21164e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown if (event.hasNoModifiers()) { 21178d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown handled = resurrectSelectionIfNeeded(); 21188d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown if (!handled) { 21194e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown while (count-- > 0) { 21208d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown if (arrowScroll(FOCUS_UP)) { 21218d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown handled = true; 21228d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown } else { 21238d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown break; 21248d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown } 21254e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown } 21269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21274e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 21288d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown handled = resurrectSelectionIfNeeded() || fullScroll(FOCUS_UP); 21299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 21319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 21329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_DPAD_DOWN: 21334e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown if (event.hasNoModifiers()) { 21348d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown handled = resurrectSelectionIfNeeded(); 21358d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown if (!handled) { 21364e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown while (count-- > 0) { 21378d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown if (arrowScroll(FOCUS_DOWN)) { 21388d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown handled = true; 21398d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown } else { 21408d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown break; 21418d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown } 21424e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown } 21439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21444e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 21458d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown handled = resurrectSelectionIfNeeded() || fullScroll(FOCUS_DOWN); 21469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 21489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 21499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_DPAD_LEFT: 21504e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown if (event.hasNoModifiers()) { 21514e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown handled = handleHorizontalFocusWithinListItem(View.FOCUS_LEFT); 21524e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown } 21539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 21544e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown 21559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_DPAD_RIGHT: 21564e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown if (event.hasNoModifiers()) { 21574e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown handled = handleHorizontalFocusWithinListItem(View.FOCUS_RIGHT); 21584e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown } 21599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 21609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 21619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_DPAD_CENTER: 21629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_ENTER: 21638d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown if (event.hasNoModifiers()) { 21648d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown handled = resurrectSelectionIfNeeded(); 21658d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown if (!handled 21668d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown && event.getRepeatCount() == 0 && getChildCount() > 0) { 21678d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown keyPressed(); 21688d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown handled = true; 21698d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown } 21709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 21729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 21739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case KeyEvent.KEYCODE_SPACE: 21749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mPopup == null || !mPopup.isShowing()) { 21754e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown if (event.hasNoModifiers()) { 21768d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown handled = resurrectSelectionIfNeeded() || pageScroll(FOCUS_DOWN); 21774e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 21788d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown handled = resurrectSelectionIfNeeded() || pageScroll(FOCUS_UP); 21799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handled = true; 21819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 21829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 21834e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown 21844e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown case KeyEvent.KEYCODE_PAGE_UP: 21854e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown if (event.hasNoModifiers()) { 21868d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown handled = resurrectSelectionIfNeeded() || pageScroll(FOCUS_UP); 21874e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 21888d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown handled = resurrectSelectionIfNeeded() || fullScroll(FOCUS_UP); 21894e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown } 21904e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown break; 21914e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown 21924e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown case KeyEvent.KEYCODE_PAGE_DOWN: 21934e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown if (event.hasNoModifiers()) { 21948d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown handled = resurrectSelectionIfNeeded() || pageScroll(FOCUS_DOWN); 21954e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 21968d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown handled = resurrectSelectionIfNeeded() || fullScroll(FOCUS_DOWN); 21974e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown } 21984e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown break; 21994e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown 22004e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown case KeyEvent.KEYCODE_MOVE_HOME: 22014e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown if (event.hasNoModifiers()) { 22028d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown handled = resurrectSelectionIfNeeded() || fullScroll(FOCUS_UP); 22034e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown } 22044e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown break; 22054e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown 22064e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown case KeyEvent.KEYCODE_MOVE_END: 22074e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown if (event.hasNoModifiers()) { 22088d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown handled = resurrectSelectionIfNeeded() || fullScroll(FOCUS_DOWN); 22094e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown } 22104e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown break; 22114e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown 22124e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown case KeyEvent.KEYCODE_TAB: 22134e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown // XXX Sometimes it is useful to be able to TAB through the items in 22144e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown // a ListView sequentially. Unfortunately this can create an 22154e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown // asymmetry in TAB navigation order unless the list selection 22164e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown // always reverts to the top or bottom when receiving TAB focus from 22174e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown // another widget. Leaving this behavior disabled for now but 22184e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown // perhaps it should be configurable (and more comprehensive). 22194e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown if (false) { 22204e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown if (event.hasNoModifiers()) { 22218d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown handled = resurrectSelectionIfNeeded() || arrowScroll(FOCUS_DOWN); 22224e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 22238d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown handled = resurrectSelectionIfNeeded() || arrowScroll(FOCUS_UP); 22244e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown } 22254e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown } 22264e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown break; 22279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 22308d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown if (handled) { 22318d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown return true; 22329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 22348d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown if (sendToTextFilter(keyCode, count, event)) { 22359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 22368d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown } 22379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 22388d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown switch (action) { 22398d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown case KeyEvent.ACTION_DOWN: 22408d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown return super.onKeyDown(keyCode, event); 22419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 22428d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown case KeyEvent.ACTION_UP: 22438d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown return super.onKeyUp(keyCode, event); 22449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 22458d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown case KeyEvent.ACTION_MULTIPLE: 22468d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown return super.onKeyMultiple(keyCode, count, event); 22478d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown 22488d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown default: // shouldn't happen 22498d6d3b83fb765eefc6fd38de77f1f45d2523ab89Jeff Brown return false; 22509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 22539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 22549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Scrolls up or down by the number of items currently present on screen. 22559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 22569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param direction either {@link View#FOCUS_UP} or {@link View#FOCUS_DOWN} 22579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return whether selection was moved 22589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 22599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean pageScroll(int direction) { 2260af9c5ea240746de088549261a505895cbf4882edAlan Viverette final int nextPage; 2261af9c5ea240746de088549261a505895cbf4882edAlan Viverette final boolean down; 22629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 22639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (direction == FOCUS_UP) { 22649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nextPage = Math.max(0, mSelectedPosition - getChildCount() - 1); 2265af9c5ea240746de088549261a505895cbf4882edAlan Viverette down = false; 22669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (direction == FOCUS_DOWN) { 22679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nextPage = Math.min(mItemCount - 1, mSelectedPosition + getChildCount() - 1); 22689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project down = true; 2269af9c5ea240746de088549261a505895cbf4882edAlan Viverette } else { 2270af9c5ea240746de088549261a505895cbf4882edAlan Viverette return false; 22719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 22739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (nextPage >= 0) { 2274af9c5ea240746de088549261a505895cbf4882edAlan Viverette final int position = lookForSelectablePositionAfter(mSelectedPosition, nextPage, down); 22759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (position >= 0) { 22769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutMode = LAYOUT_SPECIFIC; 22779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSpecificTop = mPaddingTop + getVerticalFadingEdgeLength(); 22789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2279af9c5ea240746de088549261a505895cbf4882edAlan Viverette if (down && (position > (mItemCount - getChildCount()))) { 22809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutMode = LAYOUT_FORCE_BOTTOM; 22819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2283af9c5ea240746de088549261a505895cbf4882edAlan Viverette if (!down && (position < getChildCount())) { 22849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutMode = LAYOUT_FORCE_TOP; 22859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 22879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelectionInt(position); 22889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invokeOnItemScrollListener(); 2289f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron if (!awakenScrollBars()) { 2290f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron invalidate(); 2291f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron } 22929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 22939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 22949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 22979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 22989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 23009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2301af9c5ea240746de088549261a505895cbf4882edAlan Viverette * Go to the last or first item if possible (not worrying about panning 2302af9c5ea240746de088549261a505895cbf4882edAlan Viverette * across or navigating within the internal focus of the currently selected 2303af9c5ea240746de088549261a505895cbf4882edAlan Viverette * item.) 23049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 23059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param direction either {@link View#FOCUS_UP} or {@link View#FOCUS_DOWN} 23069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return whether selection was moved 23079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 23089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean fullScroll(int direction) { 23099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean moved = false; 23109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (direction == FOCUS_UP) { 23119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mSelectedPosition != 0) { 2312af9c5ea240746de088549261a505895cbf4882edAlan Viverette final int position = lookForSelectablePositionAfter(mSelectedPosition, 0, true); 23139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (position >= 0) { 23149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutMode = LAYOUT_FORCE_TOP; 23159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelectionInt(position); 23169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invokeOnItemScrollListener(); 23179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project moved = true; 23199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (direction == FOCUS_DOWN) { 2321af9c5ea240746de088549261a505895cbf4882edAlan Viverette final int lastItem = (mItemCount - 1); 2322af9c5ea240746de088549261a505895cbf4882edAlan Viverette if (mSelectedPosition < lastItem) { 2323af9c5ea240746de088549261a505895cbf4882edAlan Viverette final int position = lookForSelectablePositionAfter( 2324af9c5ea240746de088549261a505895cbf4882edAlan Viverette mSelectedPosition, lastItem, false); 23259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (position >= 0) { 23269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLayoutMode = LAYOUT_FORCE_BOTTOM; 23279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelectionInt(position); 23289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invokeOnItemScrollListener(); 23299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project moved = true; 23319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2334f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron if (moved && !awakenScrollBars()) { 2335f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron awakenScrollBars(); 23369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invalidate(); 23379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 23399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return moved; 23409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 23429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 23439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * To avoid horizontal focus searches changing the selected item, we 23449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * manually focus search within the selected item (as applicable), and 23459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * prevent focus from jumping to something within another item. 23469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param direction one of {View.FOCUS_LEFT, View.FOCUS_RIGHT} 23479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Whether this consumes the key event. 23489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 23499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean handleHorizontalFocusWithinListItem(int direction) { 23509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (direction != View.FOCUS_LEFT && direction != View.FOCUS_RIGHT) { 2351304eefa6a33da9b75b4075cc7eb170cf4ced4cdbRomain Guy throw new IllegalArgumentException("direction must be one of" 2352304eefa6a33da9b75b4075cc7eb170cf4ced4cdbRomain Guy + " {View.FOCUS_LEFT, View.FOCUS_RIGHT}"); 23539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 23559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int numChildren = getChildCount(); 23569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mItemsCanFocus && numChildren > 0 && mSelectedPosition != INVALID_POSITION) { 23579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View selectedView = getSelectedView(); 2358304eefa6a33da9b75b4075cc7eb170cf4ced4cdbRomain Guy if (selectedView != null && selectedView.hasFocus() && 2359304eefa6a33da9b75b4075cc7eb170cf4ced4cdbRomain Guy selectedView instanceof ViewGroup) { 2360304eefa6a33da9b75b4075cc7eb170cf4ced4cdbRomain Guy 23619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View currentFocus = selectedView.findFocus(); 23629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View nextFocus = FocusFinder.getInstance().findNextFocus( 2363304eefa6a33da9b75b4075cc7eb170cf4ced4cdbRomain Guy (ViewGroup) selectedView, currentFocus, direction); 23649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (nextFocus != null) { 23659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // do the math to get interesting rect in next focus' coordinates 23669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project currentFocus.getFocusedRect(mTempRect); 23679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project offsetDescendantRectToMyCoords(currentFocus, mTempRect); 23689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project offsetRectIntoDescendantCoords(nextFocus, mTempRect); 23699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (nextFocus.requestFocus(direction, mTempRect)) { 23709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 23719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // we are blocking the key from being handled (by returning true) 23749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if the global result is going to be some other view within this 23759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // list. this is to acheive the overall goal of having 23769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // horizontal d-pad navigation remain in the current item. 2377304eefa6a33da9b75b4075cc7eb170cf4ced4cdbRomain Guy final View globalNextFocus = FocusFinder.getInstance().findNextFocus( 2378304eefa6a33da9b75b4075cc7eb170cf4ced4cdbRomain Guy (ViewGroup) getRootView(), currentFocus, direction); 23799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (globalNextFocus != null) { 23809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return isViewAncestorOf(globalNextFocus, this); 23819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 23859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 23869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 23879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 23889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Scrolls to the next or previous item if possible. 23899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 23909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param direction either {@link View#FOCUS_UP} or {@link View#FOCUS_DOWN} 23919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 23929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return whether selection was moved 23939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 23949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean arrowScroll(int direction) { 23959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 23969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInLayout = true; 23979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean handled = arrowScrollImpl(direction); 23989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (handled) { 23999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project playSoundEffect(SoundEffectConstants.getContantForFocusDirection(direction)); 24009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return handled; 24029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } finally { 24039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mInLayout = false; 24049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 24079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 24082a93911b87f7aac6d0dcceabc5983e81befeeda5Adam Powell * Used by {@link #arrowScrollImpl(int)} to help determine the next selected position 240949fc4dcd4c0d88b74084d6b2a2d843ad17b8a1ebJaewan Kim * to move to. This return a position in the direction given if the selected item 241049fc4dcd4c0d88b74084d6b2a2d843ad17b8a1ebJaewan Kim * is fully visible. 24112a93911b87f7aac6d0dcceabc5983e81befeeda5Adam Powell * 241249fc4dcd4c0d88b74084d6b2a2d843ad17b8a1ebJaewan Kim * @param selectedView Current selected view to move from 24132a93911b87f7aac6d0dcceabc5983e81befeeda5Adam Powell * @param selectedPos Current selected position to move from 24142a93911b87f7aac6d0dcceabc5983e81befeeda5Adam Powell * @param direction Direction to move in 24152a93911b87f7aac6d0dcceabc5983e81befeeda5Adam Powell * @return Desired selected position after moving in the given direction 24162a93911b87f7aac6d0dcceabc5983e81befeeda5Adam Powell */ 241749fc4dcd4c0d88b74084d6b2a2d843ad17b8a1ebJaewan Kim private final int nextSelectedPositionForDirection( 241849fc4dcd4c0d88b74084d6b2a2d843ad17b8a1ebJaewan Kim View selectedView, int selectedPos, int direction) { 24192a93911b87f7aac6d0dcceabc5983e81befeeda5Adam Powell int nextSelected; 242049fc4dcd4c0d88b74084d6b2a2d843ad17b8a1ebJaewan Kim 24212a93911b87f7aac6d0dcceabc5983e81befeeda5Adam Powell if (direction == View.FOCUS_DOWN) { 242249fc4dcd4c0d88b74084d6b2a2d843ad17b8a1ebJaewan Kim final int listBottom = getHeight() - mListPadding.bottom; 242349fc4dcd4c0d88b74084d6b2a2d843ad17b8a1ebJaewan Kim if (selectedView != null && selectedView.getBottom() <= listBottom) { 242449fc4dcd4c0d88b74084d6b2a2d843ad17b8a1ebJaewan Kim nextSelected = selectedPos != INVALID_POSITION && selectedPos >= mFirstPosition ? 242549fc4dcd4c0d88b74084d6b2a2d843ad17b8a1ebJaewan Kim selectedPos + 1 : 242649fc4dcd4c0d88b74084d6b2a2d843ad17b8a1ebJaewan Kim mFirstPosition; 242749fc4dcd4c0d88b74084d6b2a2d843ad17b8a1ebJaewan Kim } else { 242849fc4dcd4c0d88b74084d6b2a2d843ad17b8a1ebJaewan Kim return INVALID_POSITION; 242949fc4dcd4c0d88b74084d6b2a2d843ad17b8a1ebJaewan Kim } 24302a93911b87f7aac6d0dcceabc5983e81befeeda5Adam Powell } else { 243149fc4dcd4c0d88b74084d6b2a2d843ad17b8a1ebJaewan Kim final int listTop = mListPadding.top; 243249fc4dcd4c0d88b74084d6b2a2d843ad17b8a1ebJaewan Kim if (selectedView != null && selectedView.getTop() >= listTop) { 243349fc4dcd4c0d88b74084d6b2a2d843ad17b8a1ebJaewan Kim final int lastPos = mFirstPosition + getChildCount() - 1; 243449fc4dcd4c0d88b74084d6b2a2d843ad17b8a1ebJaewan Kim nextSelected = selectedPos != INVALID_POSITION && selectedPos <= lastPos ? 243549fc4dcd4c0d88b74084d6b2a2d843ad17b8a1ebJaewan Kim selectedPos - 1 : 243649fc4dcd4c0d88b74084d6b2a2d843ad17b8a1ebJaewan Kim lastPos; 243749fc4dcd4c0d88b74084d6b2a2d843ad17b8a1ebJaewan Kim } else { 243849fc4dcd4c0d88b74084d6b2a2d843ad17b8a1ebJaewan Kim return INVALID_POSITION; 243949fc4dcd4c0d88b74084d6b2a2d843ad17b8a1ebJaewan Kim } 24402a93911b87f7aac6d0dcceabc5983e81befeeda5Adam Powell } 24412a93911b87f7aac6d0dcceabc5983e81befeeda5Adam Powell 24422a93911b87f7aac6d0dcceabc5983e81befeeda5Adam Powell if (nextSelected < 0 || nextSelected >= mAdapter.getCount()) { 24432a93911b87f7aac6d0dcceabc5983e81befeeda5Adam Powell return INVALID_POSITION; 24442a93911b87f7aac6d0dcceabc5983e81befeeda5Adam Powell } 24452a93911b87f7aac6d0dcceabc5983e81befeeda5Adam Powell return lookForSelectablePosition(nextSelected, direction == View.FOCUS_DOWN); 24462a93911b87f7aac6d0dcceabc5983e81befeeda5Adam Powell } 24472a93911b87f7aac6d0dcceabc5983e81befeeda5Adam Powell 24482a93911b87f7aac6d0dcceabc5983e81befeeda5Adam Powell /** 24499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Handle an arrow scroll going up or down. Take into account whether items are selectable, 24509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * whether there are focusable items etc. 24519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 24529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param direction Either {@link android.view.View#FOCUS_UP} or {@link android.view.View#FOCUS_DOWN}. 24539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Whether any scrolling, selection or focus change occured. 24549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 24559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean arrowScrollImpl(int direction) { 24569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (getChildCount() <= 0) { 24579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 24589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 24609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View selectedView = getSelectedView(); 2461079e23575024e103358c982152afb7a720ae1a8aDianne Hackborn int selectedPos = mSelectedPosition; 24629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 246349fc4dcd4c0d88b74084d6b2a2d843ad17b8a1ebJaewan Kim int nextSelectedPosition = nextSelectedPositionForDirection(selectedView, selectedPos, direction); 24649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int amountToScroll = amountToScroll(direction, nextSelectedPosition); 24659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 24669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if we are moving focus, we may OVERRIDE the default behavior 24679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final ArrowScrollFocusResult focusResult = mItemsCanFocus ? arrowScrollFocused(direction) : null; 24689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (focusResult != null) { 24699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project nextSelectedPosition = focusResult.getSelectedPosition(); 24709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project amountToScroll = focusResult.getAmountToScroll(); 24719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 24739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean needToRedraw = focusResult != null; 24749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (nextSelectedPosition != INVALID_POSITION) { 24759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project handleNewSelectionChange(selectedView, direction, nextSelectedPosition, focusResult != null); 24769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setSelectedPositionInt(nextSelectedPosition); 24779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setNextSelectedPositionInt(nextSelectedPosition); 24789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedView = getSelectedView(); 2479079e23575024e103358c982152afb7a720ae1a8aDianne Hackborn selectedPos = nextSelectedPosition; 24809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mItemsCanFocus && focusResult == null) { 24819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // there was no new view found to take focus, make sure we 24829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // don't leave focus with the old selection 24839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View focused = getFocusedChild(); 24849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (focused != null) { 24859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project focused.clearFocus(); 24869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project needToRedraw = true; 24899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkSelectionChanged(); 24909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 24929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (amountToScroll > 0) { 24939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project scrollListItemsBy((direction == View.FOCUS_UP) ? amountToScroll : -amountToScroll); 24949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project needToRedraw = true; 24959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 24969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 24979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if we didn't find a new focusable, make sure any existing focused 24989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // item that was panned off screen gives up focus. 24999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mItemsCanFocus && (focusResult == null) 25009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project && selectedView != null && selectedView.hasFocus()) { 25019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View focused = selectedView.findFocus(); 25021ea6889136cdad8fc01de0665b3a16a4dcb259feMark Brophy if (!isViewAncestorOf(focused, this) || distanceToView(focused) > 0) { 25039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project focused.clearFocus(); 25049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if the current selection is panned off, we need to remove the selection 25089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (nextSelectedPosition == INVALID_POSITION && selectedView != null 25099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project && !isViewAncestorOf(selectedView, this)) { 25109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedView = null; 25119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project hideSelector(); 25129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // but we don't want to set the ressurect position (that would make subsequent 25149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // unhandled key events bring back the item we just scrolled off!) 25159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mResurrectToPosition = INVALID_POSITION; 25169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (needToRedraw) { 25199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (selectedView != null) { 2520079e23575024e103358c982152afb7a720ae1a8aDianne Hackborn positionSelector(selectedPos, selectedView); 25219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectedTop = selectedView.getTop(); 25229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2523f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron if (!awakenScrollBars()) { 2524f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron invalidate(); 2525f116bf8884b5b58aae261d148003811aa4a7c6e9Mike Cleron } 25269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invokeOnItemScrollListener(); 25279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 25289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 25319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 25349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * When selection changes, it is possible that the previously selected or the 25359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * next selected item will change its size. If so, we need to offset some folks, 25369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * and re-layout the items as appropriate. 25379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 25389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param selectedView The currently selected view (before changing selection). 25399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * should be <code>null</code> if there was no previous selection. 25409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param direction Either {@link android.view.View#FOCUS_UP} or 25419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.view.View#FOCUS_DOWN}. 25429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param newSelectedPosition The position of the next selection. 25439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param newFocusAssigned whether new focus was assigned. This matters because 25449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * when something has focus, we don't want to show selection (ugh). 25459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 25469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void handleNewSelectionChange(View selectedView, int direction, int newSelectedPosition, 25479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean newFocusAssigned) { 25489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (newSelectedPosition == INVALID_POSITION) { 25499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("newSelectedPosition needs to be valid"); 25509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // whether or not we are moving down or up, we want to preserve the 25539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // top of whatever view is on top: 25549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // - moving down: the view that had selection 25559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // - moving up: the view that is getting selection 25569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View topView; 25579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View bottomView; 25589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int topViewIndex, bottomViewIndex; 25599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean topSelected = false; 25609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int selectedIndex = mSelectedPosition - mFirstPosition; 25619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int nextSelectedIndex = newSelectedPosition - mFirstPosition; 25629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (direction == View.FOCUS_UP) { 25639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project topViewIndex = nextSelectedIndex; 25649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bottomViewIndex = selectedIndex; 25659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project topView = getChildAt(topViewIndex); 25669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bottomView = selectedView; 25679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project topSelected = true; 25689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 25699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project topViewIndex = selectedIndex; 25709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bottomViewIndex = nextSelectedIndex; 25719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project topView = selectedView; 25729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bottomView = getChildAt(bottomViewIndex); 25739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int numChildren = getChildCount(); 25769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // start with top view: is it changing size? 25789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (topView != null) { 25799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project topView.setSelected(!newFocusAssigned && topSelected); 25809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureAndAdjustDown(topView, topViewIndex, numChildren); 25819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // is the bottom view changing size? 25849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (bottomView != null) { 25859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bottomView.setSelected(!newFocusAssigned && !topSelected); 25869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureAndAdjustDown(bottomView, bottomViewIndex, numChildren); 25879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 25899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 25909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 25919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Re-measure a child, and if its height changes, lay it out preserving its 25929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * top, and adjust the children below it appropriately. 25939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child The child 25949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childIndex The view group index of the child. 25959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param numChildren The number of children in the view group. 25969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 25979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void measureAndAdjustDown(View child, int childIndex, int numChildren) { 25989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int oldHeight = child.getHeight(); 25999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project measureItem(child); 26009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child.getMeasuredHeight() != oldHeight) { 26019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // lay out the view, preserving its top 26029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project relayoutMeasuredItem(child); 26039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 26049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // adjust views below appropriately 26059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int heightDelta = child.getMeasuredHeight() - oldHeight; 26069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = childIndex + 1; i < numChildren; i++) { 26079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project getChildAt(i).offsetTopAndBottom(heightDelta); 26089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 26099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 26109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 26119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 26129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 26139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Measure a particular list child. 26149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * TODO: unify with setUpChild. 26159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child The child. 26169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 26179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void measureItem(View child) { 26189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ViewGroup.LayoutParams p = child.getLayoutParams(); 26199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (p == null) { 26209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project p = new ViewGroup.LayoutParams( 2621980a938c1c9a6a5791a8240e5a1e6638ab28dc77Romain Guy ViewGroup.LayoutParams.MATCH_PARENT, 26229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ViewGroup.LayoutParams.WRAP_CONTENT); 26239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 26249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 26259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childWidthSpec = ViewGroup.getChildMeasureSpec(mWidthMeasureSpec, 26269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mListPadding.left + mListPadding.right, p.width); 26279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int lpHeight = p.height; 26289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int childHeightSpec; 26299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lpHeight > 0) { 26309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeightSpec = MeasureSpec.makeMeasureSpec(lpHeight, MeasureSpec.EXACTLY); 26319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 26329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project childHeightSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED); 26339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 26349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.measure(childWidthSpec, childHeightSpec); 26359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 26369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 26379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 26389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Layout a child that has been measured, preserving its top position. 26399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * TODO: unify with setUpChild. 26409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param child The child. 26419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 26429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void relayoutMeasuredItem(View child) { 26439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int w = child.getMeasuredWidth(); 26449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int h = child.getMeasuredHeight(); 26459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childLeft = mListPadding.left; 26469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childRight = childLeft + w; 26479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childTop = child.getTop(); 26489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childBottom = childTop + h; 26499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project child.layout(childLeft, childTop, childRight, childBottom); 26509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 26519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 26529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 26539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The amount to preview next items when arrow srolling. 26549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 26559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int getArrowScrollPreviewLength() { 26569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return Math.max(MIN_SCROLL_PREVIEW_PIXELS, getVerticalFadingEdgeLength()); 26579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 26589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 26599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 26609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Determine how much we need to scroll in order to get the next selected view 26619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * visible, with a fading edge showing below as applicable. The amount is 26629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * capped at {@link #getMaxScrollAmount()} . 26639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 26649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param direction either {@link android.view.View#FOCUS_UP} or 26659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.view.View#FOCUS_DOWN}. 26669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param nextSelectedPosition The position of the next selection, or 26679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #INVALID_POSITION} if there is no next selectable position 26689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The amount to scroll. Note: this is always positive! Direction 26699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * needs to be taken into account when actually scrolling. 26709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 26719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int amountToScroll(int direction, int nextSelectedPosition) { 26729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int listBottom = getHeight() - mListPadding.bottom; 26739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int listTop = mListPadding.top; 26749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 26751ad11b9c6c7b555c27b917f26ecc08446f589284Justin Ho int numChildren = getChildCount(); 26769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 26779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (direction == View.FOCUS_DOWN) { 26789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int indexToMakeVisible = numChildren - 1; 26799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (nextSelectedPosition != INVALID_POSITION) { 26809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project indexToMakeVisible = nextSelectedPosition - mFirstPosition; 26819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 26821ad11b9c6c7b555c27b917f26ecc08446f589284Justin Ho while (numChildren <= indexToMakeVisible) { 26831ad11b9c6c7b555c27b917f26ecc08446f589284Justin Ho // Child to view is not attached yet. 26841ad11b9c6c7b555c27b917f26ecc08446f589284Justin Ho addViewBelow(getChildAt(numChildren - 1), mFirstPosition + numChildren - 1); 26851ad11b9c6c7b555c27b917f26ecc08446f589284Justin Ho numChildren++; 26861ad11b9c6c7b555c27b917f26ecc08446f589284Justin Ho } 26879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int positionToMakeVisible = mFirstPosition + indexToMakeVisible; 26889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View viewToMakeVisible = getChildAt(indexToMakeVisible); 26899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 26909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int goalBottom = listBottom; 26919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (positionToMakeVisible < mItemCount - 1) { 26929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project goalBottom -= getArrowScrollPreviewLength(); 26939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 26949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 26959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (viewToMakeVisible.getBottom() <= goalBottom) { 26969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // item is fully visible. 26979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 26989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 26999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 27009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (nextSelectedPosition != INVALID_POSITION 27019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project && (goalBottom - viewToMakeVisible.getTop()) >= getMaxScrollAmount()) { 27029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // item already has enough of it visible, changing selection is good enough 27039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 27049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 27069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int amountToScroll = (viewToMakeVisible.getBottom() - goalBottom); 27079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 27089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((mFirstPosition + numChildren) == mItemCount) { 27099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // last is last in list -> make sure we don't scroll past it 27109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int max = getChildAt(numChildren - 1).getBottom() - listBottom; 27119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project amountToScroll = Math.min(amountToScroll, max); 27129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 27149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return Math.min(amountToScroll, getMaxScrollAmount()); 27159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 27169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int indexToMakeVisible = 0; 27179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (nextSelectedPosition != INVALID_POSITION) { 27189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project indexToMakeVisible = nextSelectedPosition - mFirstPosition; 27199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27201ad11b9c6c7b555c27b917f26ecc08446f589284Justin Ho while (indexToMakeVisible < 0) { 27211ad11b9c6c7b555c27b917f26ecc08446f589284Justin Ho // Child to view is not attached yet. 27221ad11b9c6c7b555c27b917f26ecc08446f589284Justin Ho addViewAbove(getChildAt(0), mFirstPosition); 27231ad11b9c6c7b555c27b917f26ecc08446f589284Justin Ho mFirstPosition--; 27241ad11b9c6c7b555c27b917f26ecc08446f589284Justin Ho indexToMakeVisible = nextSelectedPosition - mFirstPosition; 27251ad11b9c6c7b555c27b917f26ecc08446f589284Justin Ho } 27269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int positionToMakeVisible = mFirstPosition + indexToMakeVisible; 27279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View viewToMakeVisible = getChildAt(indexToMakeVisible); 27289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int goalTop = listTop; 27299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (positionToMakeVisible > 0) { 27309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project goalTop += getArrowScrollPreviewLength(); 27319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (viewToMakeVisible.getTop() >= goalTop) { 27339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // item is fully visible. 27349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 27359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 27379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (nextSelectedPosition != INVALID_POSITION && 27389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (viewToMakeVisible.getBottom() - goalTop) >= getMaxScrollAmount()) { 27399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // item already has enough of it visible, changing selection is good enough 27409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 27419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 27439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int amountToScroll = (goalTop - viewToMakeVisible.getTop()); 27449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mFirstPosition == 0) { 27459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // first is first in list -> make sure we don't scroll past it 27469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int max = listTop - getChildAt(0).getTop(); 27479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project amountToScroll = Math.min(amountToScroll, max); 27489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return Math.min(amountToScroll, getMaxScrollAmount()); 27509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 27539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 27549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Holds results of focus aware arrow scrolling. 27559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 27569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static private class ArrowScrollFocusResult { 27579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mSelectedPosition; 27589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mAmountToScroll; 27599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 27609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 27619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * How {@link android.widget.ListView#arrowScrollFocused} returns its values. 27629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 27639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void populate(int selectedPosition, int amountToScroll) { 27649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectedPosition = selectedPosition; 27659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mAmountToScroll = amountToScroll; 27669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 27689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getSelectedPosition() { 27699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mSelectedPosition; 27709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 27729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getAmountToScroll() { 27739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mAmountToScroll; 27749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 27779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 27789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param direction either {@link android.view.View#FOCUS_UP} or 27799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.view.View#FOCUS_DOWN}. 27809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The position of the next selectable position of the views that 27819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * are currently visible, taking into account the fact that there might 27829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * be no selection. Returns {@link #INVALID_POSITION} if there is no 27839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * selectable view on screen in the given direction. 27849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 27859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int lookForSelectablePositionOnScreen(int direction) { 27869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int firstPosition = mFirstPosition; 27879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (direction == View.FOCUS_DOWN) { 27889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int startPos = (mSelectedPosition != INVALID_POSITION) ? 27899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectedPosition + 1 : 27909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project firstPosition; 27919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (startPos >= mAdapter.getCount()) { 27929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return INVALID_POSITION; 27939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (startPos < firstPosition) { 27959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project startPos = firstPosition; 27969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 27979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 27989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int lastVisiblePos = getLastVisiblePosition(); 27999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final ListAdapter adapter = getAdapter(); 28009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int pos = startPos; pos <= lastVisiblePos; pos++) { 28019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (adapter.isEnabled(pos) 28029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project && getChildAt(pos - firstPosition).getVisibility() == View.VISIBLE) { 28039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return pos; 28049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 28059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 28069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 28079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int last = firstPosition + getChildCount() - 1; 28089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int startPos = (mSelectedPosition != INVALID_POSITION) ? 28099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSelectedPosition - 1 : 28109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project firstPosition + getChildCount() - 1; 28115d9d03a0234faa3cffd11502f973057045cafe82Dianne Hackborn if (startPos < 0 || startPos >= mAdapter.getCount()) { 28129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return INVALID_POSITION; 28139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 28149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (startPos > last) { 28159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project startPos = last; 28169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 28179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 28189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final ListAdapter adapter = getAdapter(); 28199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int pos = startPos; pos >= firstPosition; pos--) { 28209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (adapter.isEnabled(pos) 28219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project && getChildAt(pos - firstPosition).getVisibility() == View.VISIBLE) { 28229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return pos; 28239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 28249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 28259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 28269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return INVALID_POSITION; 28279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 28289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 28299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 28309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Do an arrow scroll based on focus searching. If a new view is 28319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * given focus, return the selection delta and amount to scroll via 28329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * an {@link ArrowScrollFocusResult}, otherwise, return null. 28339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 28349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param direction either {@link android.view.View#FOCUS_UP} or 28359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.view.View#FOCUS_DOWN}. 28369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The result if focus has changed, or <code>null</code>. 28379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 28389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private ArrowScrollFocusResult arrowScrollFocused(final int direction) { 28399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View selectedView = getSelectedView(); 28409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View newFocus; 28419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (selectedView != null && selectedView.hasFocus()) { 28429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View oldFocus = selectedView.findFocus(); 28439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project newFocus = FocusFinder.getInstance().findNextFocus(this, oldFocus, direction); 28449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 28459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (direction == View.FOCUS_DOWN) { 28469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean topFadingEdgeShowing = (mFirstPosition > 0); 28479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int listTop = mListPadding.top + 28489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (topFadingEdgeShowing ? getArrowScrollPreviewLength() : 0); 28499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int ySearchPoint = 28509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (selectedView != null && selectedView.getTop() > listTop) ? 28519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedView.getTop() : 28529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project listTop; 28539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTempRect.set(0, ySearchPoint, 0, ySearchPoint); 28549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 28559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean bottomFadingEdgeShowing = 28569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (mFirstPosition + getChildCount() - 1) < mItemCount; 28579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int listBottom = getHeight() - mListPadding.bottom - 28589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (bottomFadingEdgeShowing ? getArrowScrollPreviewLength() : 0); 28599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int ySearchPoint = 28609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (selectedView != null && selectedView.getBottom() < listBottom) ? 28619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project selectedView.getBottom() : 28629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project listBottom; 28639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTempRect.set(0, ySearchPoint, 0, ySearchPoint); 28649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 28659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project newFocus = FocusFinder.getInstance().findNextFocusFromRect(this, mTempRect, direction); 28669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 28679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 28689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (newFocus != null) { 28699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int positionOfNewFocus = positionOfNewFocus(newFocus); 28709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 28719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // if the focus change is in a different new position, make sure 28729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // we aren't jumping over another selectable position 28739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mSelectedPosition != INVALID_POSITION && positionOfNewFocus != mSelectedPosition) { 28749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int selectablePosition = lookForSelectablePositionOnScreen(direction); 28759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (selectablePosition != INVALID_POSITION && 28769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ((direction == View.FOCUS_DOWN && selectablePosition < positionOfNewFocus) || 28779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (direction == View.FOCUS_UP && selectablePosition > positionOfNewFocus))) { 28789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; 28799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 28809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 28819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 28829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int focusScroll = amountToScrollToNewFocus(direction, newFocus, positionOfNewFocus); 28839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 28849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int maxScrollAmount = getMaxScrollAmount(); 28859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (focusScroll < maxScrollAmount) { 28869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // not moving too far, safe to give next view focus 28879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project newFocus.requestFocus(direction); 28889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mArrowScrollFocusResult.populate(positionOfNewFocus, focusScroll); 28899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mArrowScrollFocusResult; 28909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (distanceToView(newFocus) < maxScrollAmount){ 28919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Case to consider: 28929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // too far to get entire next focusable on screen, but by going 28939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // max scroll amount, we are getting it at least partially in view, 28949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // so give it focus and scroll the max ammount. 28959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project newFocus.requestFocus(direction); 28969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mArrowScrollFocusResult.populate(positionOfNewFocus, maxScrollAmount); 28979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mArrowScrollFocusResult; 28989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 28999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 29009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; 29019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 29029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 29039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 29049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param newFocus The view that would have focus. 29059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the position that contains newFocus 29069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 29079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int positionOfNewFocus(View newFocus) { 29089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int numChildren = getChildCount(); 29099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < numChildren; i++) { 29109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final View child = getChildAt(i); 29119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (isViewAncestorOf(newFocus, child)) { 29129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mFirstPosition + i; 29139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 29149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 29159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("newFocus is not a child of any of the" 29169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + " children of the list!"); 29179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 29189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 29199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 29209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Return true if child is an ancestor of parent, (or equal to the parent). 29219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 29229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean isViewAncestorOf(View child, View parent) { 29239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (child == parent) { 29249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 29259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 29269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 29279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final ViewParent theParent = child.getParent(); 29289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (theParent instanceof ViewGroup) && isViewAncestorOf((View) theParent, parent); 29299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 29309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 29319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 29329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Determine how much we need to scroll in order to get newFocus in view. 29339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param direction either {@link android.view.View#FOCUS_UP} or 29349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link android.view.View#FOCUS_DOWN}. 29359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param newFocus The view that would take focus. 29369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param positionOfNewFocus The position of the list item containing newFocus 29379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The amount to scroll. Note: this is always positive! Direction 29389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * needs to be taken into account when actually scrolling. 29399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 29409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int amountToScrollToNewFocus(int direction, View newFocus, int positionOfNewFocus) { 29419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int amountToScroll = 0; 29429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project newFocus.getDrawingRect(mTempRect); 29439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project offsetDescendantRectToMyCoords(newFocus, mTempRect); 29449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (direction == View.FOCUS_UP) { 29459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mTempRect.top < mListPadding.top) { 29469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project amountToScroll = mListPadding.top - mTempRect.top; 29479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (positionOfNewFocus > 0) { 29489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project amountToScroll += getArrowScrollPreviewLength(); 29499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 29509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 29519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 29529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int listBottom = getHeight() - mListPadding.bottom; 29539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mTempRect.bottom > listBottom) { 29549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project amountToScroll = mTempRect.bottom - listBottom; 29559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (positionOfNewFocus < mItemCount - 1) { 29569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project amountToScroll += getArrowScrollPreviewLength(); 29579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 29589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 29599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 29609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return amountToScroll; 29619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 29629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 29639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 29649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Determine the distance to the nearest edge of a view in a particular 2965fd3ddfa6f0559eb29eea179690144a7357c34b3dGilles Debunne * direction. 2966fd3ddfa6f0559eb29eea179690144a7357c34b3dGilles Debunne * 29679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param descendant A descendant of this list. 29689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return The distance, or 0 if the nearest edge is already on screen. 29699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 29709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int distanceToView(View descendant) { 29719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int distance = 0; 29729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project descendant.getDrawingRect(mTempRect); 29739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project offsetDescendantRectToMyCoords(descendant, mTempRect); 29749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int listBottom = mBottom - mTop - mListPadding.bottom; 29759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mTempRect.bottom < mListPadding.top) { 29769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project distance = mListPadding.top - mTempRect.bottom; 29779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (mTempRect.top > listBottom) { 29789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project distance = mTempRect.top - listBottom; 29799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 29809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return distance; 29819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 29829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 29839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 29849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 29859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Scroll the children by amount, adding a view at the end and removing 29869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * views that fall off as necessary. 29879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 29889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param amount The amount (positive or negative) to scroll. 29899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 29909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void scrollListItemsBy(int amount) { 29919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project offsetChildrenTopAndBottom(amount); 29929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 29939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int listBottom = getHeight() - mListPadding.bottom; 29949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int listTop = mListPadding.top; 2995c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project final AbsListView.RecycleBin recycleBin = mRecycler; 29969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 29979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (amount < 0) { 29989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // shifted items up 29999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 30009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // may need to pan views into the bottom space 30019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int numChildren = getChildCount(); 30029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View last = getChildAt(numChildren - 1); 30039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while (last.getBottom() < listBottom) { 30049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int lastVisiblePosition = mFirstPosition + numChildren - 1; 30059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (lastVisiblePosition < mItemCount - 1) { 30069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project last = addViewBelow(last, lastVisiblePosition); 30079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project numChildren++; 30089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 30099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 30109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 30139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // may have brought in the last child of the list that is skinnier 30149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // than the fading edge, thereby leaving space at the end. need 30159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // to shift back 30169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (last.getBottom() < listBottom) { 30179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project offsetChildrenTopAndBottom(listBottom - last.getBottom()); 30189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 30209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // top views may be panned off screen 30219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View first = getChildAt(0); 30229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while (first.getBottom() < listTop) { 3023c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project AbsListView.LayoutParams layoutParams = (LayoutParams) first.getLayoutParams(); 3024c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project if (recycleBin.shouldRecycleViewType(layoutParams.viewType)) { 3025079e23575024e103358c982152afb7a720ae1a8aDianne Hackborn recycleBin.addScrapView(first, mFirstPosition); 3026c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project } 3027158d6b70ac2f0c8fd7dafe0f865112090fb31699Mattias Niklewski detachViewFromParent(first); 30289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project first = getChildAt(0); 30299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFirstPosition++; 30309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 30329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // shifted items down 30339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View first = getChildAt(0); 30349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 30359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // may need to pan views into top 30369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while ((first.getTop() > listTop) && (mFirstPosition > 0)) { 30379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project first = addViewAbove(first, mFirstPosition); 30389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFirstPosition--; 30399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 30419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // may have brought the very first child of the list in too far and 30429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // need to shift it back 30439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (first.getTop() > listTop) { 30449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project offsetChildrenTopAndBottom(listTop - first.getTop()); 30459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 30479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int lastIndex = getChildCount() - 1; 30489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View last = getChildAt(lastIndex); 30499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 30509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // bottom view may be panned off screen 30519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while (last.getTop() > listBottom) { 3052c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project AbsListView.LayoutParams layoutParams = (LayoutParams) last.getLayoutParams(); 3053c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project if (recycleBin.shouldRecycleViewType(layoutParams.viewType)) { 3054079e23575024e103358c982152afb7a720ae1a8aDianne Hackborn recycleBin.addScrapView(last, mFirstPosition+lastIndex); 3055c39a6e0c51e182338deb8b63d07933b585134929The Android Open Source Project } 3056158d6b70ac2f0c8fd7dafe0f865112090fb31699Mattias Niklewski detachViewFromParent(last); 30579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project last = getChildAt(--lastIndex); 30589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 30629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private View addViewAbove(View theView, int position) { 30639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int abovePosition = position - 1; 306421875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy View view = obtainView(abovePosition, mIsScrap); 30659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int edgeOfNewChild = theView.getTop() - mDividerHeight; 306621875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy setupChild(view, abovePosition, edgeOfNewChild, false, mListPadding.left, 306721875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy false, mIsScrap[0]); 30689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return view; 30699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 30719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private View addViewBelow(View theView, int position) { 30729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int belowPosition = position + 1; 307321875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy View view = obtainView(belowPosition, mIsScrap); 30749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int edgeOfNewChild = theView.getBottom() + mDividerHeight; 307521875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy setupChild(view, belowPosition, edgeOfNewChild, true, mListPadding.left, 307621875052adddf2b52bc57fea62bf097b8aa04cbfRomain Guy false, mIsScrap[0]); 30779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return view; 30789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 30809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 30819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates that the views created by the ListAdapter can contain focusable 30829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * items. 30839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 30849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param itemsCanFocus true if items can get focus, false otherwise 30859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 30869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setItemsCanFocus(boolean itemsCanFocus) { 30879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mItemsCanFocus = itemsCanFocus; 30889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!itemsCanFocus) { 30899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setDescendantFocusability(ViewGroup.FOCUS_BLOCK_DESCENDANTS); 30909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 30929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 30939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 30949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Whether the views created by the ListAdapter can contain focusable 30959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * items. 30969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 30979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean getItemsCanFocus() { 30989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mItemsCanFocus; 30999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 31009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 31019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 310224443ea3992e372e47daa50266b0f2ec38cac388Romain Guy public boolean isOpaque() { 31037840055f76f2ba1a0052aee09e578cf9314f5364Chet Haase boolean retValue = (mCachingActive && mIsCacheColorOpaque && mDividerIsOpaque && 31048f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy hasOpaqueScrollbars()) || super.isOpaque(); 31057840055f76f2ba1a0052aee09e578cf9314f5364Chet Haase if (retValue) { 31067840055f76f2ba1a0052aee09e578cf9314f5364Chet Haase // only return true if the list items cover the entire area of the view 31073ba8f5d675831647e45d0ce11507c85dfb5f753bAdam Powell final int listTop = mListPadding != null ? mListPadding.top : mPaddingTop; 31087840055f76f2ba1a0052aee09e578cf9314f5364Chet Haase View first = getChildAt(0); 31097840055f76f2ba1a0052aee09e578cf9314f5364Chet Haase if (first == null || first.getTop() > listTop) { 31107840055f76f2ba1a0052aee09e578cf9314f5364Chet Haase return false; 31117840055f76f2ba1a0052aee09e578cf9314f5364Chet Haase } 31123ba8f5d675831647e45d0ce11507c85dfb5f753bAdam Powell final int listBottom = getHeight() - 31133ba8f5d675831647e45d0ce11507c85dfb5f753bAdam Powell (mListPadding != null ? mListPadding.bottom : mPaddingBottom); 31147840055f76f2ba1a0052aee09e578cf9314f5364Chet Haase View last = getChildAt(getChildCount() - 1); 31157840055f76f2ba1a0052aee09e578cf9314f5364Chet Haase if (last == null || last.getBottom() < listBottom) { 31167840055f76f2ba1a0052aee09e578cf9314f5364Chet Haase return false; 31177840055f76f2ba1a0052aee09e578cf9314f5364Chet Haase } 31187840055f76f2ba1a0052aee09e578cf9314f5364Chet Haase } 31197840055f76f2ba1a0052aee09e578cf9314f5364Chet Haase return retValue; 312024443ea3992e372e47daa50266b0f2ec38cac388Romain Guy } 312124443ea3992e372e47daa50266b0f2ec38cac388Romain Guy 312224443ea3992e372e47daa50266b0f2ec38cac388Romain Guy @Override 312324443ea3992e372e47daa50266b0f2ec38cac388Romain Guy public void setCacheColorHint(int color) { 31248f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy final boolean opaque = (color >>> 24) == 0xFF; 31258f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy mIsCacheColorOpaque = opaque; 31268f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy if (opaque) { 3127a02903fbee6725563da4472bd120f844e9d5518cRomain Guy if (mDividerPaint == null) { 3128a02903fbee6725563da4472bd120f844e9d5518cRomain Guy mDividerPaint = new Paint(); 3129a02903fbee6725563da4472bd120f844e9d5518cRomain Guy } 31308f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy mDividerPaint.setColor(color); 31318f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy } 313224443ea3992e372e47daa50266b0f2ec38cac388Romain Guy super.setCacheColorHint(color); 313324443ea3992e372e47daa50266b0f2ec38cac388Romain Guy } 3134637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell 3135637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell void drawOverscrollHeader(Canvas canvas, Drawable drawable, Rect bounds) { 3136637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell final int height = drawable.getMinimumHeight(); 3137637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell 3138637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell canvas.save(); 3139637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell canvas.clipRect(bounds); 3140637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell 3141637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell final int span = bounds.bottom - bounds.top; 3142637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell if (span < height) { 3143637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell bounds.top = bounds.bottom - height; 3144637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell } 3145637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell 3146637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell drawable.setBounds(bounds); 3147637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell drawable.draw(canvas); 3148637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell 3149637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell canvas.restore(); 3150637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell } 3151637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell 3152637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell void drawOverscrollFooter(Canvas canvas, Drawable drawable, Rect bounds) { 3153637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell final int height = drawable.getMinimumHeight(); 3154637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell 3155637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell canvas.save(); 3156637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell canvas.clipRect(bounds); 3157637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell 3158637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell final int span = bounds.bottom - bounds.top; 3159637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell if (span < height) { 3160637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell bounds.bottom = bounds.top + height; 3161637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell } 3162637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell 3163637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell drawable.setBounds(bounds); 3164637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell drawable.draw(canvas); 3165637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell 3166637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell canvas.restore(); 3167637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell } 3168637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell 316924443ea3992e372e47daa50266b0f2ec38cac388Romain Guy @Override 31709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void dispatchDraw(Canvas canvas) { 31710211a0a10d20ec99bd78905ea9cd2960f7beb4c8Romain Guy if (mCachingStarted) { 31720211a0a10d20ec99bd78905ea9cd2960f7beb4c8Romain Guy mCachingActive = true; 31730211a0a10d20ec99bd78905ea9cd2960f7beb4c8Romain Guy } 31740211a0a10d20ec99bd78905ea9cd2960f7beb4c8Romain Guy 31759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Draw the dividers 31769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int dividerHeight = mDividerHeight; 3177637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell final Drawable overscrollHeader = mOverScrollHeader; 3178637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell final Drawable overscrollFooter = mOverScrollFooter; 3179637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell final boolean drawOverscrollHeader = overscrollHeader != null; 3180637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell final boolean drawOverscrollFooter = overscrollFooter != null; 3181bfb5d4b93bb739a012ecec604473838c1343c88aAdam Powell final boolean drawDividers = dividerHeight > 0 && mDivider != null; 31829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3183637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell if (drawDividers || drawOverscrollHeader || drawOverscrollFooter) { 31849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Only modify the top and bottom in the loop, we set the left and right here 31859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final Rect bounds = mTempRect; 31869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bounds.left = mPaddingLeft; 31879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bounds.right = mRight - mLeft - mPaddingRight; 31889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 31899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int count = getChildCount(); 31909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int headerCount = mHeaderViewInfos.size(); 3191bfb5d4b93bb739a012ecec604473838c1343c88aAdam Powell final int itemCount = mItemCount; 3192b9fc4b879bab5640038fb09b40133611f91d7274Alan Viverette final int footerLimit = (itemCount - mFooterViewInfos.size()); 31939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean headerDividers = mHeaderDividersEnabled; 31949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean footerDividers = mFooterDividersEnabled; 31959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int first = mFirstPosition; 31962bed22744281a093ee5e76eab531819f3c62b0bfRomain Guy final boolean areAllItemsSelectable = mAreAllItemsSelectable; 31972bed22744281a093ee5e76eab531819f3c62b0bfRomain Guy final ListAdapter adapter = mAdapter; 3198e32edc614e62ac874a969d3cc6bb1e0c0c3f2607Romain Guy // If the list is opaque *and* the background is not, we want to 3199e32edc614e62ac874a969d3cc6bb1e0c0c3f2607Romain Guy // fill a rect where the dividers would be for non-selectable items 3200e32edc614e62ac874a969d3cc6bb1e0c0c3f2607Romain Guy // If the list is opaque and the background is also opaque, we don't 3201e32edc614e62ac874a969d3cc6bb1e0c0c3f2607Romain Guy // need to draw anything since the background will do it for us 3202179de8a37cb886e61264d2b7efd5bd4f29a5b381Romain Guy final boolean fillForMissingDividers = isOpaque() && !super.isOpaque(); 3203e32edc614e62ac874a969d3cc6bb1e0c0c3f2607Romain Guy 3204e32edc614e62ac874a969d3cc6bb1e0c0c3f2607Romain Guy if (fillForMissingDividers && mDividerPaint == null && mIsCacheColorOpaque) { 3205a02903fbee6725563da4472bd120f844e9d5518cRomain Guy mDividerPaint = new Paint(); 3206e32edc614e62ac874a969d3cc6bb1e0c0c3f2607Romain Guy mDividerPaint.setColor(getCacheColorHint()); 3207a02903fbee6725563da4472bd120f844e9d5518cRomain Guy } 32088f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy final Paint paint = mDividerPaint; 32099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 32109456655f93f34a11f4b4696212f2649eed0c35dbAdam Powell int effectivePaddingTop = 0; 32119456655f93f34a11f4b4696212f2649eed0c35dbAdam Powell int effectivePaddingBottom = 0; 32129456655f93f34a11f4b4696212f2649eed0c35dbAdam Powell if ((mGroupFlags & CLIP_TO_PADDING_MASK) == CLIP_TO_PADDING_MASK) { 32139456655f93f34a11f4b4696212f2649eed0c35dbAdam Powell effectivePaddingTop = mListPadding.top; 32149456655f93f34a11f4b4696212f2649eed0c35dbAdam Powell effectivePaddingBottom = mListPadding.bottom; 32159456655f93f34a11f4b4696212f2649eed0c35dbAdam Powell } 32169456655f93f34a11f4b4696212f2649eed0c35dbAdam Powell 32179456655f93f34a11f4b4696212f2649eed0c35dbAdam Powell final int listBottom = mBottom - mTop - effectivePaddingBottom + mScrollY; 32189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mStackFromBottom) { 3219637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell int bottom = 0; 32200b8bb4282a7d1afb24f8c4d5beb2ca4ecc731116Adam Powell 3221637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell // Draw top divider or header for overscroll 3222637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell final int scrollY = mScrollY; 3223637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell if (count > 0 && scrollY < 0) { 3224637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell if (drawOverscrollHeader) { 3225637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell bounds.bottom = 0; 3226637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell bounds.top = scrollY; 3227637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell drawOverscrollHeader(canvas, overscrollHeader, bounds); 3228637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell } else if (drawDividers) { 3229637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell bounds.bottom = 0; 3230637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell bounds.top = -dividerHeight; 3231637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell drawDivider(canvas, bounds, -1); 3232637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell } 3233637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell } 3234637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell 32359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; i++) { 3236b9fc4b879bab5640038fb09b40133611f91d7274Alan Viverette final int itemIndex = (first + i); 3237b9fc4b879bab5640038fb09b40133611f91d7274Alan Viverette final boolean isHeader = (itemIndex < headerCount); 3238b9fc4b879bab5640038fb09b40133611f91d7274Alan Viverette final boolean isFooter = (itemIndex >= footerLimit); 3239b9fc4b879bab5640038fb09b40133611f91d7274Alan Viverette if ((headerDividers || !isHeader) && (footerDividers || !isFooter)) { 3240b9fc4b879bab5640038fb09b40133611f91d7274Alan Viverette final View child = getChildAt(i); 32419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bottom = child.getBottom(); 3242b9fc4b879bab5640038fb09b40133611f91d7274Alan Viverette final boolean isLastItem = (i == (count - 1)); 3243b9fc4b879bab5640038fb09b40133611f91d7274Alan Viverette 3244b9fc4b879bab5640038fb09b40133611f91d7274Alan Viverette if (drawDividers && (bottom < listBottom) 3245b9fc4b879bab5640038fb09b40133611f91d7274Alan Viverette && !(drawOverscrollFooter && isLastItem)) { 3246b9fc4b879bab5640038fb09b40133611f91d7274Alan Viverette final int nextIndex = (itemIndex + 1); 324720cc605b69a017316112929666255226c184a376Alan Viverette // Draw dividers between enabled items, headers 324820cc605b69a017316112929666255226c184a376Alan Viverette // and/or footers when enabled and requested, and 324920cc605b69a017316112929666255226c184a376Alan Viverette // after the last enabled item. 325020cc605b69a017316112929666255226c184a376Alan Viverette if (adapter.isEnabled(itemIndex) && (headerDividers || !isHeader 325120cc605b69a017316112929666255226c184a376Alan Viverette && (nextIndex >= headerCount)) && (isLastItem 325220cc605b69a017316112929666255226c184a376Alan Viverette || adapter.isEnabled(nextIndex) && (footerDividers || !isFooter 325320cc605b69a017316112929666255226c184a376Alan Viverette && (nextIndex < footerLimit)))) { 3254637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell bounds.top = bottom; 3255637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell bounds.bottom = bottom + dividerHeight; 3256637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell drawDivider(canvas, bounds, i); 3257637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell } else if (fillForMissingDividers) { 3258637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell bounds.top = bottom; 3259637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell bounds.bottom = bottom + dividerHeight; 3260637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell canvas.drawRect(bounds, paint); 3261637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell } 32629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 32639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 32649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3265637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell 3266637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell final int overFooterBottom = mBottom + mScrollY; 3267637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell if (drawOverscrollFooter && first + count == itemCount && 3268637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell overFooterBottom > bottom) { 3269637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell bounds.top = bottom; 3270637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell bounds.bottom = overFooterBottom; 3271637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell drawOverscrollFooter(canvas, overscrollFooter, bounds); 3272637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell } 32739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 32749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int top; 32759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3276bfb5d4b93bb739a012ecec604473838c1343c88aAdam Powell final int scrollY = mScrollY; 3277bfb5d4b93bb739a012ecec604473838c1343c88aAdam Powell 3278637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell if (count > 0 && drawOverscrollHeader) { 3279637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell bounds.top = scrollY; 3280637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell bounds.bottom = getChildAt(0).getTop(); 3281637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell drawOverscrollHeader(canvas, overscrollHeader, bounds); 3282637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell } 3283637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell 3284637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell final int start = drawOverscrollHeader ? 1 : 0; 3285637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell for (int i = start; i < count; i++) { 3286b9fc4b879bab5640038fb09b40133611f91d7274Alan Viverette final int itemIndex = (first + i); 3287b9fc4b879bab5640038fb09b40133611f91d7274Alan Viverette final boolean isHeader = (itemIndex < headerCount); 3288b9fc4b879bab5640038fb09b40133611f91d7274Alan Viverette final boolean isFooter = (itemIndex >= footerLimit); 3289b9fc4b879bab5640038fb09b40133611f91d7274Alan Viverette if ((headerDividers || !isHeader) && (footerDividers || !isFooter)) { 3290b9fc4b879bab5640038fb09b40133611f91d7274Alan Viverette final View child = getChildAt(i); 32919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project top = child.getTop(); 3292b9fc4b879bab5640038fb09b40133611f91d7274Alan Viverette if (drawDividers && (top > effectivePaddingTop)) { 3293b9fc4b879bab5640038fb09b40133611f91d7274Alan Viverette final boolean isFirstItem = (i == start); 3294b9fc4b879bab5640038fb09b40133611f91d7274Alan Viverette final int previousIndex = (itemIndex - 1); 329520cc605b69a017316112929666255226c184a376Alan Viverette // Draw dividers between enabled items, headers 329620cc605b69a017316112929666255226c184a376Alan Viverette // and/or footers when enabled and requested, and 329720cc605b69a017316112929666255226c184a376Alan Viverette // before the first enabled item. 329820cc605b69a017316112929666255226c184a376Alan Viverette if (adapter.isEnabled(itemIndex) && (headerDividers || !isHeader 329920cc605b69a017316112929666255226c184a376Alan Viverette && (previousIndex >= headerCount)) && (isFirstItem || 330020cc605b69a017316112929666255226c184a376Alan Viverette adapter.isEnabled(previousIndex) && (footerDividers || !isFooter 330120cc605b69a017316112929666255226c184a376Alan Viverette && (previousIndex < footerLimit)))) { 33028f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy bounds.top = top - dividerHeight; 33038f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy bounds.bottom = top; 3304b9fc4b879bab5640038fb09b40133611f91d7274Alan Viverette // Give the method the child ABOVE the divider, 3305b9fc4b879bab5640038fb09b40133611f91d7274Alan Viverette // so we subtract one from our child position. 3306b9fc4b879bab5640038fb09b40133611f91d7274Alan Viverette // Give -1 when there is no child above the 33078f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy // divider. 33088f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy drawDivider(canvas, bounds, i - 1); 3309e32edc614e62ac874a969d3cc6bb1e0c0c3f2607Romain Guy } else if (fillForMissingDividers) { 33108f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy bounds.top = top - dividerHeight; 33118f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy bounds.bottom = top; 33128f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy canvas.drawRect(bounds, paint); 33138f1344f5e7c92f2fd532f65e5584afe0e4cc6b11Romain Guy } 33149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3317bfb5d4b93bb739a012ecec604473838c1343c88aAdam Powell 3318179de8a37cb886e61264d2b7efd5bd4f29a5b381Romain Guy if (count > 0 && scrollY > 0) { 3319637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell if (drawOverscrollFooter) { 3320637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell final int absListBottom = mBottom; 3321637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell bounds.top = absListBottom; 3322637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell bounds.bottom = absListBottom + scrollY; 3323637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell drawOverscrollFooter(canvas, overscrollFooter, bounds); 3324637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell } else if (drawDividers) { 3325637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell bounds.top = listBottom; 3326637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell bounds.bottom = listBottom + dividerHeight; 3327637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell drawDivider(canvas, bounds, -1); 3328637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell } 3329bfb5d4b93bb739a012ecec604473838c1343c88aAdam Powell } 33309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Draw the indicators (these should be drawn above the dividers) and children 33349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.dispatchDraw(canvas); 33359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33370211a0a10d20ec99bd78905ea9cd2960f7beb4c8Romain Guy @Override 33380211a0a10d20ec99bd78905ea9cd2960f7beb4c8Romain Guy protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 33390211a0a10d20ec99bd78905ea9cd2960f7beb4c8Romain Guy boolean more = super.drawChild(canvas, child, drawingTime); 33400211a0a10d20ec99bd78905ea9cd2960f7beb4c8Romain Guy if (mCachingActive && child.mCachingFailed) { 33410211a0a10d20ec99bd78905ea9cd2960f7beb4c8Romain Guy mCachingActive = false; 33420211a0a10d20ec99bd78905ea9cd2960f7beb4c8Romain Guy } 33430211a0a10d20ec99bd78905ea9cd2960f7beb4c8Romain Guy return more; 33440211a0a10d20ec99bd78905ea9cd2960f7beb4c8Romain Guy } 33450211a0a10d20ec99bd78905ea9cd2960f7beb4c8Romain Guy 33469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 33479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Draws a divider for the given child in the given bounds. 33489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 33499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param canvas The canvas to draw to. 33509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param bounds The bounds of the divider. 33519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param childIndex The index of child (of the View) above the divider. 33529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This will be -1 if there is no child above the divider to be 33539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * drawn. 33549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 33559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void drawDivider(Canvas canvas, Rect bounds, int childIndex) { 33569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // This widget draws the same divider for all children 33579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final Drawable divider = mDivider; 33589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 335995930e13faac8c17dabfaa1478089baa772f091bRomain Guy divider.setBounds(bounds); 33609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project divider.draw(canvas); 33619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 33649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns the drawable that will be drawn between each item in the list. 33659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 33669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return the current drawable drawn between list elements 33679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 33689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Drawable getDivider() { 33699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mDivider; 33709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 33739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sets the drawable that will be drawn between each item in the list. If the drawable does 33749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * not have an intrinsic height, you should also call {@link #setDividerHeight(int)} 33759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 33769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param divider The drawable to use. 33779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 33789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setDivider(Drawable divider) { 33799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (divider != null) { 33809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDividerHeight = divider.getIntrinsicHeight(); 33819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 33829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDividerHeight = 0; 33839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDivider = divider; 338524443ea3992e372e47daa50266b0f2ec38cac388Romain Guy mDividerIsOpaque = divider == null || divider.getOpacity() == PixelFormat.OPAQUE; 3386eeb55e673feca137bd0106ca31f9b68509a4ae36Romain Guy requestLayout(); 3387eeb55e673feca137bd0106ca31f9b68509a4ae36Romain Guy invalidate(); 33889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 33919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Returns the height of the divider that will be drawn between each item in the list. 33929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 33939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getDividerHeight() { 33949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mDividerHeight; 33959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 33969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 33979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 33989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Sets the height of the divider that will be drawn between each item in the list. Calling 33999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * this will override the intrinsic height as set by {@link #setDivider(Drawable)} 34009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 34019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param height The new height of the divider in pixels. 34029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 34039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setDividerHeight(int height) { 34049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDividerHeight = height; 3405eeb55e673feca137bd0106ca31f9b68509a4ae36Romain Guy requestLayout(); 3406eeb55e673feca137bd0106ca31f9b68509a4ae36Romain Guy invalidate(); 34079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 34089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 34099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 34109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Enables or disables the drawing of the divider for header views. 34119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 34129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param headerDividersEnabled True to draw the headers, false otherwise. 34139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 34149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setFooterDividersEnabled(boolean) 34155542103589696e2945b5fe5e251292873e3af897Alan Viverette * @see #areHeaderDividersEnabled() 34169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #addHeaderView(android.view.View) 34179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 34189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setHeaderDividersEnabled(boolean headerDividersEnabled) { 34199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mHeaderDividersEnabled = headerDividersEnabled; 34209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invalidate(); 34219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 34229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 34239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 34245542103589696e2945b5fe5e251292873e3af897Alan Viverette * @return Whether the drawing of the divider for header views is enabled 34255542103589696e2945b5fe5e251292873e3af897Alan Viverette * 34265542103589696e2945b5fe5e251292873e3af897Alan Viverette * @see #setHeaderDividersEnabled(boolean) 34275542103589696e2945b5fe5e251292873e3af897Alan Viverette */ 34285542103589696e2945b5fe5e251292873e3af897Alan Viverette public boolean areHeaderDividersEnabled() { 34295542103589696e2945b5fe5e251292873e3af897Alan Viverette return mHeaderDividersEnabled; 34305542103589696e2945b5fe5e251292873e3af897Alan Viverette } 34315542103589696e2945b5fe5e251292873e3af897Alan Viverette 34325542103589696e2945b5fe5e251292873e3af897Alan Viverette /** 34339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Enables or disables the drawing of the divider for footer views. 34349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 34359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param footerDividersEnabled True to draw the footers, false otherwise. 34369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 34379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #setHeaderDividersEnabled(boolean) 34385542103589696e2945b5fe5e251292873e3af897Alan Viverette * @see #areFooterDividersEnabled() 34399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #addFooterView(android.view.View) 34409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 34419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setFooterDividersEnabled(boolean footerDividersEnabled) { 34429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mFooterDividersEnabled = footerDividersEnabled; 34439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project invalidate(); 34449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 34455542103589696e2945b5fe5e251292873e3af897Alan Viverette 34465542103589696e2945b5fe5e251292873e3af897Alan Viverette /** 34475542103589696e2945b5fe5e251292873e3af897Alan Viverette * @return Whether the drawing of the divider for footer views is enabled 34485542103589696e2945b5fe5e251292873e3af897Alan Viverette * 34495542103589696e2945b5fe5e251292873e3af897Alan Viverette * @see #setFooterDividersEnabled(boolean) 34505542103589696e2945b5fe5e251292873e3af897Alan Viverette */ 34515542103589696e2945b5fe5e251292873e3af897Alan Viverette public boolean areFooterDividersEnabled() { 34525542103589696e2945b5fe5e251292873e3af897Alan Viverette return mFooterDividersEnabled; 34535542103589696e2945b5fe5e251292873e3af897Alan Viverette } 3454bfb5d4b93bb739a012ecec604473838c1343c88aAdam Powell 3455637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell /** 3456637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell * Sets the drawable that will be drawn above all other list content. 3457637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell * This area can become visible when the user overscrolls the list. 3458637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell * 3459637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell * @param header The drawable to use 3460637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell */ 3461637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell public void setOverscrollHeader(Drawable header) { 3462637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell mOverScrollHeader = header; 3463637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell if (mScrollY < 0) { 3464637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell invalidate(); 3465637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell } 3466637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell } 3467637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell 3468637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell /** 3469637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell * @return The drawable that will be drawn above all other list content 3470637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell */ 3471637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell public Drawable getOverscrollHeader() { 3472637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell return mOverScrollHeader; 3473637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell } 3474637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell 3475637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell /** 3476637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell * Sets the drawable that will be drawn below all other list content. 3477637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell * This area can become visible when the user overscrolls the list, 3478637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell * or when the list's content does not fully fill the container area. 3479637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell * 3480637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell * @param footer The drawable to use 3481637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell */ 3482637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell public void setOverscrollFooter(Drawable footer) { 3483637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell mOverScrollFooter = footer; 3484637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell invalidate(); 3485637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell } 3486637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell 3487637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell /** 3488637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell * @return The drawable that will be drawn below all other list content 3489637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell */ 3490637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell public Drawable getOverscrollFooter() { 3491637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell return mOverScrollFooter; 3492637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell } 3493637d337b58d8eec6de19230a5dd5ca5581c0478dAdam Powell 34949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 34959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onFocusChanged(boolean gainFocus, int direction, Rect previouslyFocusedRect) { 34969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.onFocusChanged(gainFocus, direction, previouslyFocusedRect); 34979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3498e1bf486846ce7589727ad84440bd9a2d42751055Adam Powell final ListAdapter adapter = mAdapter; 34999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int closetChildIndex = -1; 3500dcce1216b0066f3f9ed1b01a485684e8617e7ea4Adam Powell int closestChildTop = 0; 3501e1bf486846ce7589727ad84440bd9a2d42751055Adam Powell if (adapter != null && gainFocus && previouslyFocusedRect != null) { 35029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project previouslyFocusedRect.offset(mScrollX, mScrollY); 35039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3504d7507834e73f32b4c82839036dc3897a1587e668Adam Powell // Don't cache the result of getChildCount or mFirstPosition here, 3505d7507834e73f32b4c82839036dc3897a1587e668Adam Powell // it could change in layoutChildren. 3506d7507834e73f32b4c82839036dc3897a1587e668Adam Powell if (adapter.getCount() < getChildCount() + mFirstPosition) { 3507c854f281a1c330931a2a03eef802ad7d4521998eAdam Powell mLayoutMode = LAYOUT_NORMAL; 3508c854f281a1c330931a2a03eef802ad7d4521998eAdam Powell layoutChildren(); 3509c854f281a1c330931a2a03eef802ad7d4521998eAdam Powell } 3510c854f281a1c330931a2a03eef802ad7d4521998eAdam Powell 35119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // figure out which item should be selected based on previously 35129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // focused rect 35139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Rect otherRect = mTempRect; 35149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int minDistance = Integer.MAX_VALUE; 35159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int childCount = getChildCount(); 3516d7507834e73f32b4c82839036dc3897a1587e668Adam Powell final int firstPosition = mFirstPosition; 35179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 35189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < childCount; i++) { 35199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // only consider selectable views 35209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!adapter.isEnabled(firstPosition + i)) { 35219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project continue; 35229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 35239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 35249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View other = getChildAt(i); 35259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project other.getDrawingRect(otherRect); 35269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project offsetDescendantRectToMyCoords(other, otherRect); 35279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int distance = getDistance(previouslyFocusedRect, otherRect, direction); 35289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 35299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (distance < minDistance) { 35309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project minDistance = distance; 35319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project closetChildIndex = i; 3532dcce1216b0066f3f9ed1b01a485684e8617e7ea4Adam Powell closestChildTop = other.getTop(); 35339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 35349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 35359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 35369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 35379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (closetChildIndex >= 0) { 3538dcce1216b0066f3f9ed1b01a485684e8617e7ea4Adam Powell setSelectionFromTop(closetChildIndex + mFirstPosition, closestChildTop); 35399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 35409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project requestLayout(); 35419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 35429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 35439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 35449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 35459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 35469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * (non-Javadoc) 35479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 35489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Children specified in XML are assumed to be header views. After we have 35499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * parsed them move them out of the children list and into mHeaderViews. 35509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 35519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 35529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void onFinishInflate() { 35539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.onFinishInflate(); 35549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 35559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int count = getChildCount(); 35569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (count > 0) { 35579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < count; ++i) { 35589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project addHeaderView(getChildAt(i)); 35599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 35609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project removeAllViews(); 35619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 35629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 35639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 35649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* (non-Javadoc) 35659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see android.view.View#findViewById(int) 35669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * First look in our children, then in any header and footer views that may be scrolled off. 35679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 35689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 35699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected View findViewTraversal(int id) { 35709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View v; 35719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project v = super.findViewTraversal(id); 35729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (v == null) { 35739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project v = findViewInHeadersOrFooters(mHeaderViewInfos, id); 35749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (v != null) { 35759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return v; 35769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 35779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project v = findViewInHeadersOrFooters(mFooterViewInfos, id); 35789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (v != null) { 35799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return v; 35809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 35819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 35829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return v; 35839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 35849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 35859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* (non-Javadoc) 35869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 35879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Look in the passed in list of headers or footers for the view. 35889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 35899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View findViewInHeadersOrFooters(ArrayList<FixedViewInfo> where, int id) { 35909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (where != null) { 35919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int len = where.size(); 35929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View v; 35939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 35949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < len; i++) { 35959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project v = where.get(i).view; 35969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 35979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!v.isRootNamespace()) { 35989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project v = v.findViewById(id); 35999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (v != null) { 36019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return v; 36029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; 36079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* (non-Javadoc) 36104e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown * @see android.view.View#findViewWithTag(Object) 36119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * First look in our children, then in any header and footer views that may be scrolled off. 36129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 36139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 36149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected View findViewWithTagTraversal(Object tag) { 36159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View v; 36169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project v = super.findViewWithTagTraversal(tag); 36179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (v == null) { 36184e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown v = findViewWithTagInHeadersOrFooters(mHeaderViewInfos, tag); 36199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (v != null) { 36209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return v; 36219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36234e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown v = findViewWithTagInHeadersOrFooters(mFooterViewInfos, tag); 36249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (v != null) { 36259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return v; 36269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return v; 36299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* (non-Javadoc) 36329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 36339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Look in the passed in list of headers or footers for the view with the tag. 36349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 36354e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown View findViewWithTagInHeadersOrFooters(ArrayList<FixedViewInfo> where, Object tag) { 36369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (where != null) { 36379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int len = where.size(); 36389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project View v; 36399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < len; i++) { 36419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project v = where.get(i).view; 36429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!v.isRootNamespace()) { 36449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project v = v.findViewWithTag(tag); 36459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (v != null) { 36479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return v; 36489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; 36539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 36549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 36554e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown /** 36564e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown * @hide 36574e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown * @see android.view.View#findViewByPredicate(Predicate) 36584e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown * First look in our children, then in any header and footer views that may be scrolled off. 36594e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown */ 36604e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown @Override 36614dfbec2665bd5f567d7321f2e88a39e1ab45fdf8Jeff Brown protected View findViewByPredicateTraversal(Predicate<View> predicate, View childToSkip) { 36624e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown View v; 36634dfbec2665bd5f567d7321f2e88a39e1ab45fdf8Jeff Brown v = super.findViewByPredicateTraversal(predicate, childToSkip); 36644e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown if (v == null) { 36654dfbec2665bd5f567d7321f2e88a39e1ab45fdf8Jeff Brown v = findViewByPredicateInHeadersOrFooters(mHeaderViewInfos, predicate, childToSkip); 36664e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown if (v != null) { 36674e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown return v; 36684e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown } 36694e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown 36704dfbec2665bd5f567d7321f2e88a39e1ab45fdf8Jeff Brown v = findViewByPredicateInHeadersOrFooters(mFooterViewInfos, predicate, childToSkip); 36714e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown if (v != null) { 36724e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown return v; 36734e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown } 36744e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown } 36754e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown return v; 36764e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown } 36774e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown 36784e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown /* (non-Javadoc) 36794e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown * 36804e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown * Look in the passed in list of headers or footers for the first view that matches 36814e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown * the predicate. 36824e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown */ 36834e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown View findViewByPredicateInHeadersOrFooters(ArrayList<FixedViewInfo> where, 36844dfbec2665bd5f567d7321f2e88a39e1ab45fdf8Jeff Brown Predicate<View> predicate, View childToSkip) { 36854e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown if (where != null) { 36864e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown int len = where.size(); 36874e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown View v; 36884e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown 36894e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown for (int i = 0; i < len; i++) { 36904e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown v = where.get(i).view; 36914e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown 36924dfbec2665bd5f567d7321f2e88a39e1ab45fdf8Jeff Brown if (v != childToSkip && !v.isRootNamespace()) { 36934e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown v = v.findViewByPredicate(predicate); 36944e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown 36954e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown if (v != null) { 36964e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown return v; 36974e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown } 36984e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown } 36994e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown } 37004e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown } 37014e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown return null; 37024e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown } 37034e6319b73c85082e18d1c532b86336ddd1f8cfaaJeff Brown 37049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3705fd3ddfa6f0559eb29eea179690144a7357c34b3dGilles Debunne * Returns the set of checked items ids. The result is only valid if the 37068f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell * choice mode has not been set to {@link #CHOICE_MODE_NONE}. 3707fd3ddfa6f0559eb29eea179690144a7357c34b3dGilles Debunne * 3708fd3ddfa6f0559eb29eea179690144a7357c34b3dGilles Debunne * @return A new array which contains the id of each checked item in the 3709fd3ddfa6f0559eb29eea179690144a7357c34b3dGilles Debunne * list. 37108f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell * 3711463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell * @deprecated Use {@link #getCheckedItemIds()} instead. 3712ad28bed52ccabd252149b5297a2d94bacdb388ccRomain Guy */ 37138350f7dbc3a62211b2891f35911e4073d24c4cc5Adam Powell @Deprecated 3714ad28bed52ccabd252149b5297a2d94bacdb388ccRomain Guy public long[] getCheckItemIds() { 3715463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell // Use new behavior that correctly handles stable ID mapping. 3716463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell if (mAdapter != null && mAdapter.hasStableIds()) { 3717463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell return getCheckedItemIds(); 3718463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell } 3719463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell 3720463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell // Old behavior was buggy, but would sort of work for adapters without stable IDs. 3721463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell // Fall back to it to support legacy apps. 3722463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell if (mChoiceMode != CHOICE_MODE_NONE && mCheckStates != null && mAdapter != null) { 3723463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell final SparseBooleanArray states = mCheckStates; 3724463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell final int count = states.size(); 3725463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell final long[] ids = new long[count]; 3726463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell final ListAdapter adapter = mAdapter; 3727463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell 3728463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell int checkedCount = 0; 3729463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell for (int i = 0; i < count; i++) { 3730463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell if (states.valueAt(i)) { 3731463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell ids[checkedCount++] = adapter.getItemId(states.keyAt(i)); 3732463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell } 3733463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell } 3734463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell 3735463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell // Trim array if needed. mCheckStates may contain false values 3736463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell // resulting in checkedCount being smaller than count. 3737463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell if (checkedCount == count) { 3738463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell return ids; 3739463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell } else { 3740463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell final long[] result = new long[checkedCount]; 3741463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell System.arraycopy(ids, 0, result, 0, checkedCount); 3742463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell 3743463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell return result; 3744463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell } 3745463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell } 3746463ceff8a44ec2bf67b0394be7f7e70613a55478Adam Powell return new long[0]; 37478f1bfe1a7cef702fd74e5405443e9fdb7c5e7556Adam Powell } 37488a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov 37498a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov @Override 37508a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov public void onInitializeAccessibilityEvent(AccessibilityEvent event) { 37518a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov super.onInitializeAccessibilityEvent(event); 37528a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov event.setClassName(ListView.class.getName()); 37538a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov } 37548a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov 37558a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov @Override 37568a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) { 37578a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov super.onInitializeAccessibilityNodeInfo(info); 37588a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov info.setClassName(ListView.class.getName()); 37595b2081dc41cccd76780a2cb4e9a973505c13446cAlan Viverette 37605b2081dc41cccd76780a2cb4e9a973505c13446cAlan Viverette final int count = getCount(); 37615b2081dc41cccd76780a2cb4e9a973505c13446cAlan Viverette final CollectionInfo collectionInfo = CollectionInfo.obtain(1, count, false); 37625b2081dc41cccd76780a2cb4e9a973505c13446cAlan Viverette info.setCollectionInfo(collectionInfo); 37635b2081dc41cccd76780a2cb4e9a973505c13446cAlan Viverette } 37645b2081dc41cccd76780a2cb4e9a973505c13446cAlan Viverette 37655b2081dc41cccd76780a2cb4e9a973505c13446cAlan Viverette @Override 37665b2081dc41cccd76780a2cb4e9a973505c13446cAlan Viverette public void onInitializeAccessibilityNodeInfoForItem( 37675b2081dc41cccd76780a2cb4e9a973505c13446cAlan Viverette View view, int position, AccessibilityNodeInfo info) { 37685b2081dc41cccd76780a2cb4e9a973505c13446cAlan Viverette super.onInitializeAccessibilityNodeInfoForItem(view, position, info); 37695b2081dc41cccd76780a2cb4e9a973505c13446cAlan Viverette 37705b2081dc41cccd76780a2cb4e9a973505c13446cAlan Viverette final LayoutParams lp = (LayoutParams) view.getLayoutParams(); 37715b2081dc41cccd76780a2cb4e9a973505c13446cAlan Viverette final boolean isHeading = lp != null && lp.viewType != ITEM_VIEW_TYPE_HEADER_OR_FOOTER; 37725b2081dc41cccd76780a2cb4e9a973505c13446cAlan Viverette final CollectionItemInfo itemInfo = CollectionItemInfo.obtain(0, 1, position, 1, isHeading); 37735b2081dc41cccd76780a2cb4e9a973505c13446cAlan Viverette info.setCollectionItemInfo(itemInfo); 37748a78fd4d9572dff95432fcc4ba0e87563415b728Svetoslav Ganov } 37759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 3776