ViewTreeObserver.java revision 25eba5c5029bd91ff7e396b2cca0e4ce024124ed
19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2008 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.view; 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.graphics.Rect; 20fbf097732137a32930d151f7ba6816a5b870c32aJeff Brownimport android.graphics.Region; 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 226e0ecb4eed5cd2e1f15766d7028467129974a12dChet Haaseimport java.util.ArrayList; 23105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Projectimport java.util.concurrent.CopyOnWriteArrayList; 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * A view tree observer is used to register listeners that can be notified of global 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * changes in the view tree. Such global events include, but are not limited to, 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * layout of the whole tree, beginning of the drawing pass, touch mode change.... 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * A ViewTreeObserver should never be instantiated by applications as it is provided 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * by the views hierarchy. Refer to {@link android.view.View#getViewTreeObserver()} 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * for more information. 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic final class ViewTreeObserver { 35105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project private CopyOnWriteArrayList<OnGlobalFocusChangeListener> mOnGlobalFocusListeners; 36105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project private CopyOnWriteArrayList<OnGlobalLayoutListener> mOnGlobalLayoutListeners; 37105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project private CopyOnWriteArrayList<OnTouchModeChangeListener> mOnTouchModeChangeListeners; 38105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project private CopyOnWriteArrayList<OnComputeInternalInsetsListener> mOnComputeInternalInsetsListeners; 39105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project private CopyOnWriteArrayList<OnScrollChangedListener> mOnScrollChangedListeners; 406e0ecb4eed5cd2e1f15766d7028467129974a12dChet Haase private ArrayList<OnPreDrawListener> mOnPreDrawListeners; 4125eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy private ArrayList<OnDrawListener> mOnDrawListeners; 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mAlive = true; 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Interface definition for a callback to be invoked when the focus state within 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the view tree changes. 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public interface OnGlobalFocusChangeListener { 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Callback method to be invoked when the focus changes in the view tree. When 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the view tree transitions from touch mode to non-touch mode, oldFocus is null. 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * When the view tree transitions from non-touch mode to touch mode, newFocus is 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * null. When focus changes in non-touch mode (without transition from or to 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * touch mode) either oldFocus or newFocus can be null. 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param oldFocus The previously focused view, if any. 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param newFocus The newly focused View, if any. 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onGlobalFocusChanged(View oldFocus, View newFocus); 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Interface definition for a callback to be invoked when the global layout state 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * or the visibility of views within the view tree changes. 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public interface OnGlobalLayoutListener { 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Callback method to be invoked when the global layout state or the visibility of views 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * within the view tree changes 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onGlobalLayout(); 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Interface definition for a callback to be invoked when the view tree is about to be drawn. 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public interface OnPreDrawListener { 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Callback method to be invoked when the view tree is about to be drawn. At this point, all 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * views in the tree have been measured and given a frame. Clients can use this to adjust 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * their scroll bounds or even to request a new layout before drawing occurs. 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return Return true to proceed with the current drawing pass, or false to cancel. 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see android.view.View#onMeasure 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see android.view.View#onLayout 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see android.view.View#onDraw 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean onPreDraw(); 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 9425eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * Interface definition for a callback to be invoked when the view tree is about to be drawn. 9525eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy */ 9625eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy public interface OnDrawListener { 9725eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy /** 9825eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * <p>Callback method to be invoked when the view tree is about to be drawn. At this point, 9925eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * views cannot be modified in any way.</p> 10025eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * 10125eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * <p>Unlike with {@link OnPreDrawListener}, this method cannot be used to cancel the 10225eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * current drawing pass.</p> 10325eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * 10425eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * <p>An {@link OnDrawListener} listener <strong>cannot be added or removed</strong> 10525eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * from this method.</p> 10625eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * 10725eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * @see android.view.View#onMeasure 10825eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * @see android.view.View#onLayout 10925eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * @see android.view.View#onDraw 11025eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy */ 11125eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy public void onDraw(); 11225eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy } 11325eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy 11425eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy /** 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Interface definition for a callback to be invoked when the touch mode changes. 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public interface OnTouchModeChangeListener { 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Callback method to be invoked when the touch mode changes. 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param isInTouchMode True if the view hierarchy is now in touch mode, false otherwise. 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onTouchModeChanged(boolean isInTouchMode); 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Interface definition for a callback to be invoked when 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * something in the view tree has been scrolled. 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public interface OnScrollChangedListener { 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Callback method to be invoked when something in the view tree 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * has been scrolled. 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onScrollChanged(); 1369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Parameters used with OnComputeInternalInsetsListener. 140935ae463d495d41155e27feb849768ad2b8b16dbDianne Hackborn * 141935ae463d495d41155e27feb849768ad2b8b16dbDianne Hackborn * We are not yet ready to commit to this API and support it, so 142935ae463d495d41155e27feb849768ad2b8b16dbDianne Hackborn * @hide 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final static class InternalInsetsInfo { 1459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Offsets from the frame of the window at which the content of 1479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * windows behind it should be placed. 1489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final Rect contentInsets = new Rect(); 1509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 152fbf097732137a32930d151f7ba6816a5b870c32aJeff Brown * Offsets from the frame of the window at which windows behind it 1539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * are visible. 1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final Rect visibleInsets = new Rect(); 156fbf097732137a32930d151f7ba6816a5b870c32aJeff Brown 157fbf097732137a32930d151f7ba6816a5b870c32aJeff Brown /** 158fbf097732137a32930d151f7ba6816a5b870c32aJeff Brown * Touchable region defined relative to the origin of the frame of the window. 159fbf097732137a32930d151f7ba6816a5b870c32aJeff Brown * Only used when {@link #setTouchableInsets(int)} is called with 160fbf097732137a32930d151f7ba6816a5b870c32aJeff Brown * the option {@link #TOUCHABLE_INSETS_REGION}. 161fbf097732137a32930d151f7ba6816a5b870c32aJeff Brown */ 162fbf097732137a32930d151f7ba6816a5b870c32aJeff Brown public final Region touchableRegion = new Region(); 163fbf097732137a32930d151f7ba6816a5b870c32aJeff Brown 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Option for {@link #setTouchableInsets(int)}: the entire window frame 1669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * can be touched. 1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final int TOUCHABLE_INSETS_FRAME = 0; 1699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Option for {@link #setTouchableInsets(int)}: the area inside of 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the content insets can be touched. 1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final int TOUCHABLE_INSETS_CONTENT = 1; 1759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Option for {@link #setTouchableInsets(int)}: the area inside of 1789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the visible insets can be touched. 1799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final int TOUCHABLE_INSETS_VISIBLE = 2; 181fbf097732137a32930d151f7ba6816a5b870c32aJeff Brown 182fbf097732137a32930d151f7ba6816a5b870c32aJeff Brown /** 183fbf097732137a32930d151f7ba6816a5b870c32aJeff Brown * Option for {@link #setTouchableInsets(int)}: the area inside of 184fbf097732137a32930d151f7ba6816a5b870c32aJeff Brown * the provided touchable region in {@link #touchableRegion} can be touched. 185fbf097732137a32930d151f7ba6816a5b870c32aJeff Brown */ 186fbf097732137a32930d151f7ba6816a5b870c32aJeff Brown public static final int TOUCHABLE_INSETS_REGION = 3; 187fbf097732137a32930d151f7ba6816a5b870c32aJeff Brown 1889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Set which parts of the window can be touched: either 1909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #TOUCHABLE_INSETS_FRAME}, {@link #TOUCHABLE_INSETS_CONTENT}, 191fbf097732137a32930d151f7ba6816a5b870c32aJeff Brown * {@link #TOUCHABLE_INSETS_VISIBLE}, or {@link #TOUCHABLE_INSETS_REGION}. 1929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setTouchableInsets(int val) { 1949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTouchableInsets = val; 1959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 19625eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy 1979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mTouchableInsets; 1989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void reset() { 200fbf097732137a32930d151f7ba6816a5b870c32aJeff Brown contentInsets.setEmpty(); 201fbf097732137a32930d151f7ba6816a5b870c32aJeff Brown visibleInsets.setEmpty(); 202fbf097732137a32930d151f7ba6816a5b870c32aJeff Brown touchableRegion.setEmpty(); 2039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTouchableInsets = TOUCHABLE_INSETS_FRAME; 2049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 20525eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy 20625eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy @Override 20725eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy public int hashCode() { 20825eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy int result = contentInsets != null ? contentInsets.hashCode() : 0; 20925eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy result = 31 * result + (visibleInsets != null ? visibleInsets.hashCode() : 0); 21025eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy result = 31 * result + (touchableRegion != null ? touchableRegion.hashCode() : 0); 21125eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy result = 31 * result + mTouchableInsets; 21225eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy return result; 21325eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy } 21425eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy 2151e878d2ff506e7e96bbdb9d06afea43561445b7aRomain Guy @Override 2161e878d2ff506e7e96bbdb9d06afea43561445b7aRomain Guy public boolean equals(Object o) { 21725eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy if (this == o) return true; 21825eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy if (o == null || getClass() != o.getClass()) return false; 21925eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy 22025eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy InternalInsetsInfo other = (InternalInsetsInfo)o; 22125eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy return mTouchableInsets == other.mTouchableInsets && 22225eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy contentInsets.equals(other.contentInsets) && 22325eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy visibleInsets.equals(other.visibleInsets) && 22425eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy touchableRegion.equals(other.touchableRegion); 2259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 22625eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy 2279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void set(InternalInsetsInfo other) { 2289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project contentInsets.set(other.contentInsets); 2299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project visibleInsets.set(other.visibleInsets); 230fbf097732137a32930d151f7ba6816a5b870c32aJeff Brown touchableRegion.set(other.touchableRegion); 2319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTouchableInsets = other.mTouchableInsets; 2329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Interface definition for a callback to be invoked when layout has 2379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * completed and the client can compute its interior insets. 238935ae463d495d41155e27feb849768ad2b8b16dbDianne Hackborn * 239935ae463d495d41155e27feb849768ad2b8b16dbDianne Hackborn * We are not yet ready to commit to this API and support it, so 240935ae463d495d41155e27feb849768ad2b8b16dbDianne Hackborn * @hide 2419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public interface OnComputeInternalInsetsListener { 2439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Callback method to be invoked when layout has completed and the 2459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * client can compute its interior insets. 2469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param inoutInfo Should be filled in by the implementation with 2489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the information about the insets of the window. This is called 2499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * with whatever values the previous OnComputeInternalInsetsListener 2509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * returned, if there are multiple such listeners in the window. 2519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onComputeInternalInsets(InternalInsetsInfo inoutInfo); 2539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Creates a new ViewTreeObserver. This constructor should not be called 2579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ViewTreeObserver() { 2599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Merges all the listeners registered on the specified observer with the listeners 2639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * registered on this object. After this method is invoked, the specified observer 2649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * will return false in {@link #isAlive()} and should not be used anymore. 2659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param observer The ViewTreeObserver whose listeners must be added to this observer 2679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void merge(ViewTreeObserver observer) { 2699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (observer.mOnGlobalFocusListeners != null) { 2709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnGlobalFocusListeners != null) { 2719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnGlobalFocusListeners.addAll(observer.mOnGlobalFocusListeners); 2729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 2739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnGlobalFocusListeners = observer.mOnGlobalFocusListeners; 2749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (observer.mOnGlobalLayoutListeners != null) { 2789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnGlobalLayoutListeners != null) { 2799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnGlobalLayoutListeners.addAll(observer.mOnGlobalLayoutListeners); 2809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 2819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnGlobalLayoutListeners = observer.mOnGlobalLayoutListeners; 2829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (observer.mOnPreDrawListeners != null) { 2869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnPreDrawListeners != null) { 2879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnPreDrawListeners.addAll(observer.mOnPreDrawListeners); 2889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 2899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnPreDrawListeners = observer.mOnPreDrawListeners; 2909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (observer.mOnTouchModeChangeListeners != null) { 2949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnTouchModeChangeListeners != null) { 2959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnTouchModeChangeListeners.addAll(observer.mOnTouchModeChangeListeners); 2969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 2979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnTouchModeChangeListeners = observer.mOnTouchModeChangeListeners; 2989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (observer.mOnComputeInternalInsetsListeners != null) { 3029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnComputeInternalInsetsListeners != null) { 3039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnComputeInternalInsetsListeners.addAll(observer.mOnComputeInternalInsetsListeners); 3049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 3059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnComputeInternalInsetsListeners = observer.mOnComputeInternalInsetsListeners; 3069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 309757c697f73561ef4cfae9e3da64e9b2894d24147Mark Brophy if (observer.mOnScrollChangedListeners != null) { 310757c697f73561ef4cfae9e3da64e9b2894d24147Mark Brophy if (mOnScrollChangedListeners != null) { 311757c697f73561ef4cfae9e3da64e9b2894d24147Mark Brophy mOnScrollChangedListeners.addAll(observer.mOnScrollChangedListeners); 312757c697f73561ef4cfae9e3da64e9b2894d24147Mark Brophy } else { 313757c697f73561ef4cfae9e3da64e9b2894d24147Mark Brophy mOnScrollChangedListeners = observer.mOnScrollChangedListeners; 314757c697f73561ef4cfae9e3da64e9b2894d24147Mark Brophy } 315757c697f73561ef4cfae9e3da64e9b2894d24147Mark Brophy } 316757c697f73561ef4cfae9e3da64e9b2894d24147Mark Brophy 3179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project observer.kill(); 3189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Register a callback to be invoked when the focus state within the view tree changes. 3229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param listener The callback to add 3249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalStateException If {@link #isAlive()} returns false 3269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void addOnGlobalFocusChangeListener(OnGlobalFocusChangeListener listener) { 3289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkIsAlive(); 3299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnGlobalFocusListeners == null) { 331105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project mOnGlobalFocusListeners = new CopyOnWriteArrayList<OnGlobalFocusChangeListener>(); 3329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnGlobalFocusListeners.add(listener); 3359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Remove a previously installed focus change callback. 3399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param victim The callback to remove 3419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalStateException If {@link #isAlive()} returns false 3439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #addOnGlobalFocusChangeListener(OnGlobalFocusChangeListener) 3459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void removeOnGlobalFocusChangeListener(OnGlobalFocusChangeListener victim) { 3479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkIsAlive(); 3489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnGlobalFocusListeners == null) { 3499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 3509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnGlobalFocusListeners.remove(victim); 3529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Register a callback to be invoked when the global layout state or the visibility of views 3569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * within the view tree changes 3579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param listener The callback to add 3599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalStateException If {@link #isAlive()} returns false 3619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void addOnGlobalLayoutListener(OnGlobalLayoutListener listener) { 3639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkIsAlive(); 3649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnGlobalLayoutListeners == null) { 366105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project mOnGlobalLayoutListeners = new CopyOnWriteArrayList<OnGlobalLayoutListener>(); 3679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnGlobalLayoutListeners.add(listener); 3709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 3739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Remove a previously installed global layout callback 3749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param victim The callback to remove 3769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalStateException If {@link #isAlive()} returns false 3781e878d2ff506e7e96bbdb9d06afea43561445b7aRomain Guy * 3791e878d2ff506e7e96bbdb9d06afea43561445b7aRomain Guy * @deprecated Use #removeOnGlobalLayoutListener instead 3809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 3819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #addOnGlobalLayoutListener(OnGlobalLayoutListener) 3829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 3831e878d2ff506e7e96bbdb9d06afea43561445b7aRomain Guy @Deprecated 3849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void removeGlobalOnLayoutListener(OnGlobalLayoutListener victim) { 3851e878d2ff506e7e96bbdb9d06afea43561445b7aRomain Guy removeOnGlobalLayoutListener(victim); 3861e878d2ff506e7e96bbdb9d06afea43561445b7aRomain Guy } 3871e878d2ff506e7e96bbdb9d06afea43561445b7aRomain Guy 3881e878d2ff506e7e96bbdb9d06afea43561445b7aRomain Guy /** 3891e878d2ff506e7e96bbdb9d06afea43561445b7aRomain Guy * Remove a previously installed global layout callback 3901e878d2ff506e7e96bbdb9d06afea43561445b7aRomain Guy * 3911e878d2ff506e7e96bbdb9d06afea43561445b7aRomain Guy * @param victim The callback to remove 3921e878d2ff506e7e96bbdb9d06afea43561445b7aRomain Guy * 3931e878d2ff506e7e96bbdb9d06afea43561445b7aRomain Guy * @throws IllegalStateException If {@link #isAlive()} returns false 3941e878d2ff506e7e96bbdb9d06afea43561445b7aRomain Guy * 3951e878d2ff506e7e96bbdb9d06afea43561445b7aRomain Guy * @see #addOnGlobalLayoutListener(OnGlobalLayoutListener) 3961e878d2ff506e7e96bbdb9d06afea43561445b7aRomain Guy */ 3971e878d2ff506e7e96bbdb9d06afea43561445b7aRomain Guy public void removeOnGlobalLayoutListener(OnGlobalLayoutListener victim) { 3989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkIsAlive(); 3999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnGlobalLayoutListeners == null) { 4009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 4019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnGlobalLayoutListeners.remove(victim); 4039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Register a callback to be invoked when the view tree is about to be drawn 4079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param listener The callback to add 4099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalStateException If {@link #isAlive()} returns false 4119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void addOnPreDrawListener(OnPreDrawListener listener) { 4139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkIsAlive(); 4149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnPreDrawListeners == null) { 4166e0ecb4eed5cd2e1f15766d7028467129974a12dChet Haase mOnPreDrawListeners = new ArrayList<OnPreDrawListener>(); 4179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnPreDrawListeners.add(listener); 4209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Remove a previously installed pre-draw callback 4249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param victim The callback to remove 4269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalStateException If {@link #isAlive()} returns false 4289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #addOnPreDrawListener(OnPreDrawListener) 4309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void removeOnPreDrawListener(OnPreDrawListener victim) { 4329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkIsAlive(); 4339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnPreDrawListeners == null) { 4349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 4359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnPreDrawListeners.remove(victim); 4379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 44025eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * <p>Register a callback to be invoked when the view tree is about to be drawn.</p> 44125eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * <p><strong>Note:</strong> this method <strong>cannot</strong> be invoked from 44225eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * {@link android.view.ViewTreeObserver.OnDrawListener#onDraw()}.</p> 44325eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * 44425eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * @param listener The callback to add 44525eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * 44625eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * @throws IllegalStateException If {@link #isAlive()} returns false 44725eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy */ 44825eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy public void addOnDrawListener(OnDrawListener listener) { 44925eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy checkIsAlive(); 45025eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy 45125eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy if (mOnDrawListeners == null) { 45225eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy mOnDrawListeners = new ArrayList<OnDrawListener>(); 45325eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy } 45425eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy 45525eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy mOnDrawListeners.add(listener); 45625eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy } 45725eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy 45825eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy /** 45925eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * <p>Remove a previously installed pre-draw callback.</p> 46025eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * <p><strong>Note:</strong> this method <strong>cannot</strong> be invoked from 46125eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * {@link android.view.ViewTreeObserver.OnDrawListener#onDraw()}.</p> 46225eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * 46325eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * @param victim The callback to remove 46425eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * 46525eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * @throws IllegalStateException If {@link #isAlive()} returns false 46625eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * 46725eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * @see #addOnDrawListener(OnDrawListener) 46825eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy */ 46925eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy public void removeOnDrawListener(OnDrawListener victim) { 47025eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy checkIsAlive(); 47125eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy if (mOnDrawListeners == null) { 47225eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy return; 47325eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy } 47425eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy mOnDrawListeners.remove(victim); 47525eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy } 47625eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy 47725eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy /** 4789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Register a callback to be invoked when a view has been scrolled. 4799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param listener The callback to add 4819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalStateException If {@link #isAlive()} returns false 4839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 4849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void addOnScrollChangedListener(OnScrollChangedListener listener) { 4859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkIsAlive(); 4869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnScrollChangedListeners == null) { 488105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project mOnScrollChangedListeners = new CopyOnWriteArrayList<OnScrollChangedListener>(); 4899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnScrollChangedListeners.add(listener); 4929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 4949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 4959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Remove a previously installed scroll-changed callback 4969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param victim The callback to remove 4989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 4999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalStateException If {@link #isAlive()} returns false 5009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #addOnScrollChangedListener(OnScrollChangedListener) 5029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void removeOnScrollChangedListener(OnScrollChangedListener victim) { 5049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkIsAlive(); 5059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnScrollChangedListeners == null) { 5069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 5079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnScrollChangedListeners.remove(victim); 5099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Register a callback to be invoked when the invoked when the touch mode changes. 5139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param listener The callback to add 5159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalStateException If {@link #isAlive()} returns false 5179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void addOnTouchModeChangeListener(OnTouchModeChangeListener listener) { 5199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkIsAlive(); 5209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnTouchModeChangeListeners == null) { 522105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project mOnTouchModeChangeListeners = new CopyOnWriteArrayList<OnTouchModeChangeListener>(); 5239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnTouchModeChangeListeners.add(listener); 5269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Remove a previously installed touch mode change callback 5309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param victim The callback to remove 5329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalStateException If {@link #isAlive()} returns false 5349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #addOnTouchModeChangeListener(OnTouchModeChangeListener) 5369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void removeOnTouchModeChangeListener(OnTouchModeChangeListener victim) { 5389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkIsAlive(); 5399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnTouchModeChangeListeners == null) { 5409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 5419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnTouchModeChangeListeners.remove(victim); 5439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Register a callback to be invoked when the invoked when it is time to 5479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * compute the window's internal insets. 5489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param listener The callback to add 5509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalStateException If {@link #isAlive()} returns false 552935ae463d495d41155e27feb849768ad2b8b16dbDianne Hackborn * 553935ae463d495d41155e27feb849768ad2b8b16dbDianne Hackborn * We are not yet ready to commit to this API and support it, so 554935ae463d495d41155e27feb849768ad2b8b16dbDianne Hackborn * @hide 5559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void addOnComputeInternalInsetsListener(OnComputeInternalInsetsListener listener) { 5579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkIsAlive(); 5589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnComputeInternalInsetsListeners == null) { 560105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project mOnComputeInternalInsetsListeners = 561105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project new CopyOnWriteArrayList<OnComputeInternalInsetsListener>(); 5629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnComputeInternalInsetsListeners.add(listener); 5659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Remove a previously installed internal insets computation callback 5699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param victim The callback to remove 5719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws IllegalStateException If {@link #isAlive()} returns false 5739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see #addOnComputeInternalInsetsListener(OnComputeInternalInsetsListener) 575935ae463d495d41155e27feb849768ad2b8b16dbDianne Hackborn * 576935ae463d495d41155e27feb849768ad2b8b16dbDianne Hackborn * We are not yet ready to commit to this API and support it, so 577935ae463d495d41155e27feb849768ad2b8b16dbDianne Hackborn * @hide 5789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 5799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void removeOnComputeInternalInsetsListener(OnComputeInternalInsetsListener victim) { 5809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project checkIsAlive(); 5819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mOnComputeInternalInsetsListeners == null) { 5829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 5839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnComputeInternalInsetsListeners.remove(victim); 5859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void checkIsAlive() { 5889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!mAlive) { 5899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalStateException("This ViewTreeObserver is not alive, call " 5909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + "getViewTreeObserver() again"); 5919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 5939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 5949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 5959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Indicates whether this ViewTreeObserver is alive. When an observer is not alive, 5969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * any call to a method (except this one) will throw an exception. 5979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 5989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * If an application keeps a long-lived reference to this ViewTreeObserver, it should 5999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * always check for the result of this method before calling any other method. 6009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True if this object is alive and be used, false otherwise. 6029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean isAlive() { 6049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mAlive; 6059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Marks this ViewTreeObserver as not alive. After invoking this method, invoking 6099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * any other method but {@link #isAlive()} and {@link #kill()} will throw an Exception. 6109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @hide 6129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private void kill() { 6149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mAlive = false; 6159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Notifies registered listeners that focus has changed. 6199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final void dispatchOnGlobalFocusChange(View oldFocus, View newFocus) { 621105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project // NOTE: because of the use of CopyOnWriteArrayList, we *must* use an iterator to 622105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project // perform the dispatching. The iterator is a safe guard against listeners that 623105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project // could mutate the list by calling the various add/remove methods. This prevents 624105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project // the array from being modified while we iterate it. 625105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project final CopyOnWriteArrayList<OnGlobalFocusChangeListener> listeners = mOnGlobalFocusListeners; 6266e0ecb4eed5cd2e1f15766d7028467129974a12dChet Haase if (listeners != null && listeners.size() > 0) { 627105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project for (OnGlobalFocusChangeListener listener : listeners) { 628105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project listener.onGlobalFocusChanged(oldFocus, newFocus); 6299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Notifies registered listeners that a global layout happened. This can be called 6359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * manually if you are forcing a layout on a View or a hierarchy of Views that are 6369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * not attached to a Window or in the GONE state. 6379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final void dispatchOnGlobalLayout() { 639105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project // NOTE: because of the use of CopyOnWriteArrayList, we *must* use an iterator to 640105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project // perform the dispatching. The iterator is a safe guard against listeners that 641105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project // could mutate the list by calling the various add/remove methods. This prevents 642105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project // the array from being modified while we iterate it. 643105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project final CopyOnWriteArrayList<OnGlobalLayoutListener> listeners = mOnGlobalLayoutListeners; 6446e0ecb4eed5cd2e1f15766d7028467129974a12dChet Haase if (listeners != null && listeners.size() > 0) { 645105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project for (OnGlobalLayoutListener listener : listeners) { 646105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project listener.onGlobalLayout(); 6479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 6529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Notifies registered listeners that the drawing pass is about to start. If a 6539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * listener returns true, then the drawing pass is canceled and rescheduled. This can 6549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * be called manually if you are forcing the drawing on a View or a hierarchy of Views 6559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * that are not attached to a Window or in the GONE state. 6569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True if the current draw should be canceled and resceduled, false otherwise. 6589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 65925eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy @SuppressWarnings("unchecked") 6609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public final boolean dispatchOnPreDraw() { 6616e0ecb4eed5cd2e1f15766d7028467129974a12dChet Haase // NOTE: we *must* clone the listener list to perform the dispatching. 6626e0ecb4eed5cd2e1f15766d7028467129974a12dChet Haase // The clone is a safe guard against listeners that 663105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project // could mutate the list by calling the various add/remove methods. This prevents 6646e0ecb4eed5cd2e1f15766d7028467129974a12dChet Haase // the array from being modified while we process it. 6659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean cancelDraw = false; 6666e0ecb4eed5cd2e1f15766d7028467129974a12dChet Haase if (mOnPreDrawListeners != null && mOnPreDrawListeners.size() > 0) { 6676e0ecb4eed5cd2e1f15766d7028467129974a12dChet Haase final ArrayList<OnPreDrawListener> listeners = 6686e0ecb4eed5cd2e1f15766d7028467129974a12dChet Haase (ArrayList<OnPreDrawListener>) mOnPreDrawListeners.clone(); 6696e0ecb4eed5cd2e1f15766d7028467129974a12dChet Haase int numListeners = listeners.size(); 6706e0ecb4eed5cd2e1f15766d7028467129974a12dChet Haase for (int i = 0; i < numListeners; ++i) { 6716e0ecb4eed5cd2e1f15766d7028467129974a12dChet Haase cancelDraw |= !(listeners.get(i).onPreDraw()); 6729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return cancelDraw; 6759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 6769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 6779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 67825eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy * Notifies registered listeners that the drawing pass is about to start. 67925eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy */ 68025eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy public final void dispatchOnDraw() { 68125eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy if (mOnDrawListeners != null) { 68225eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy final ArrayList<OnDrawListener> listeners = mOnDrawListeners; 68325eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy int numListeners = listeners.size(); 68425eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy for (int i = 0; i < numListeners; ++i) { 68525eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy listeners.get(i).onDraw(); 68625eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy } 68725eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy } 68825eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy } 68925eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy 69025eba5c5029bd91ff7e396b2cca0e4ce024124edRomain Guy /** 6919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Notifies registered listeners that the touch mode has changed. 6929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 6939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param inTouchMode True if the touch mode is now enabled, false otherwise. 6949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 6959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final void dispatchOnTouchModeChanged(boolean inTouchMode) { 696105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project final CopyOnWriteArrayList<OnTouchModeChangeListener> listeners = 697105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project mOnTouchModeChangeListeners; 6986e0ecb4eed5cd2e1f15766d7028467129974a12dChet Haase if (listeners != null && listeners.size() > 0) { 699105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project for (OnTouchModeChangeListener listener : listeners) { 700105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project listener.onTouchModeChanged(inTouchMode); 7019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Notifies registered listeners that something has scrolled. 7079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final void dispatchOnScrollChanged() { 709105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project // NOTE: because of the use of CopyOnWriteArrayList, we *must* use an iterator to 710105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project // perform the dispatching. The iterator is a safe guard against listeners that 711105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project // could mutate the list by calling the various add/remove methods. This prevents 712105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project // the array from being modified while we iterate it. 713105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project final CopyOnWriteArrayList<OnScrollChangedListener> listeners = mOnScrollChangedListeners; 7146e0ecb4eed5cd2e1f15766d7028467129974a12dChet Haase if (listeners != null && listeners.size() > 0) { 715105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project for (OnScrollChangedListener listener : listeners) { 716105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project listener.onScrollChanged(); 7179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Returns whether there are listeners for computing internal insets. 7239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final boolean hasComputeInternalInsetsListeners() { 725105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project final CopyOnWriteArrayList<OnComputeInternalInsetsListener> listeners = 726105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project mOnComputeInternalInsetsListeners; 7279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (listeners != null && listeners.size() > 0); 7289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 7309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 7319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Calls all listeners to compute the current insets. 7329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 7339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final void dispatchOnComputeInternalInsets(InternalInsetsInfo inoutInfo) { 734105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project // NOTE: because of the use of CopyOnWriteArrayList, we *must* use an iterator to 735105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project // perform the dispatching. The iterator is a safe guard against listeners that 736105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project // could mutate the list by calling the various add/remove methods. This prevents 737105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project // the array from being modified while we iterate it. 738105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project final CopyOnWriteArrayList<OnComputeInternalInsetsListener> listeners = 739105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project mOnComputeInternalInsetsListeners; 7406e0ecb4eed5cd2e1f15766d7028467129974a12dChet Haase if (listeners != null && listeners.size() > 0) { 741105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project for (OnComputeInternalInsetsListener listener : listeners) { 742105925376f8d0f6b318c9938c7b83ef7fef094daThe Android Open Source Project listener.onComputeInternalInsets(inoutInfo); 7439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 7469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 747