1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.view; 18 19 import android.graphics.Rect; 20 import android.os.IBinder; 21 import android.os.Parcel; 22 import android.os.Parcelable; 23 import android.util.Pools; 24 25 import java.util.ArrayList; 26 import java.util.List; 27 28 /** 29 * This class represents information about a window from the 30 * window manager to another part of the system. 31 * 32 * @hide 33 */ 34 public class WindowInfo implements Parcelable { 35 private static final int MAX_POOL_SIZE = 10; 36 37 private static final Pools.SynchronizedPool<WindowInfo> sPool = 38 new Pools.SynchronizedPool<WindowInfo>(MAX_POOL_SIZE); 39 40 public int type; 41 public int layer; 42 public IBinder token; 43 public IBinder parentToken; 44 public IBinder activityToken; 45 public boolean focused; 46 public final Rect boundsInScreen = new Rect(); 47 public List<IBinder> childTokens; 48 public CharSequence title; 49 public int accessibilityIdOfAnchor = View.NO_ID; 50 public boolean inPictureInPicture; 51 WindowInfo()52 private WindowInfo() { 53 /* do nothing - hide constructor */ 54 } 55 obtain()56 public static WindowInfo obtain() { 57 WindowInfo window = sPool.acquire(); 58 if (window == null) { 59 window = new WindowInfo(); 60 } 61 return window; 62 } 63 obtain(WindowInfo other)64 public static WindowInfo obtain(WindowInfo other) { 65 WindowInfo window = obtain(); 66 window.type = other.type; 67 window.layer = other.layer; 68 window.token = other.token; 69 window.parentToken = other.parentToken; 70 window.activityToken = other.activityToken; 71 window.focused = other.focused; 72 window.boundsInScreen.set(other.boundsInScreen); 73 window.title = other.title; 74 window.accessibilityIdOfAnchor = other.accessibilityIdOfAnchor; 75 window.inPictureInPicture = other.inPictureInPicture; 76 77 if (other.childTokens != null && !other.childTokens.isEmpty()) { 78 if (window.childTokens == null) { 79 window.childTokens = new ArrayList<IBinder>(other.childTokens); 80 } else { 81 window.childTokens.addAll(other.childTokens); 82 } 83 } 84 85 return window; 86 } 87 recycle()88 public void recycle() { 89 clear(); 90 sPool.release(this); 91 } 92 93 @Override describeContents()94 public int describeContents() { 95 return 0; 96 } 97 98 @Override writeToParcel(Parcel parcel, int flags)99 public void writeToParcel(Parcel parcel, int flags) { 100 parcel.writeInt(type); 101 parcel.writeInt(layer); 102 parcel.writeStrongBinder(token); 103 parcel.writeStrongBinder(parentToken); 104 parcel.writeStrongBinder(activityToken); 105 parcel.writeInt(focused ? 1 : 0); 106 boundsInScreen.writeToParcel(parcel, flags); 107 parcel.writeCharSequence(title); 108 parcel.writeInt(accessibilityIdOfAnchor); 109 parcel.writeInt(inPictureInPicture ? 1 : 0); 110 111 if (childTokens != null && !childTokens.isEmpty()) { 112 parcel.writeInt(1); 113 parcel.writeBinderList(childTokens); 114 } else { 115 parcel.writeInt(0); 116 } 117 } 118 119 @Override toString()120 public String toString() { 121 StringBuilder builder = new StringBuilder(); 122 builder.append("WindowInfo["); 123 builder.append("title=").append(title); 124 builder.append(", type=").append(type); 125 builder.append(", layer=").append(layer); 126 builder.append(", token=").append(token); 127 builder.append(", bounds=").append(boundsInScreen); 128 builder.append(", parent=").append(parentToken); 129 builder.append(", focused=").append(focused); 130 builder.append(", children=").append(childTokens); 131 builder.append(", accessibility anchor=").append(accessibilityIdOfAnchor); 132 builder.append(']'); 133 return builder.toString(); 134 } 135 initFromParcel(Parcel parcel)136 private void initFromParcel(Parcel parcel) { 137 type = parcel.readInt(); 138 layer = parcel.readInt(); 139 token = parcel.readStrongBinder(); 140 parentToken = parcel.readStrongBinder(); 141 activityToken = parcel.readStrongBinder(); 142 focused = (parcel.readInt() == 1); 143 boundsInScreen.readFromParcel(parcel); 144 title = parcel.readCharSequence(); 145 accessibilityIdOfAnchor = parcel.readInt(); 146 inPictureInPicture = (parcel.readInt() == 1); 147 148 final boolean hasChildren = (parcel.readInt() == 1); 149 if (hasChildren) { 150 if (childTokens == null) { 151 childTokens = new ArrayList<IBinder>(); 152 } 153 parcel.readBinderList(childTokens); 154 } 155 } 156 clear()157 private void clear() { 158 type = 0; 159 layer = 0; 160 token = null; 161 parentToken = null; 162 activityToken = null; 163 focused = false; 164 boundsInScreen.setEmpty(); 165 if (childTokens != null) { 166 childTokens.clear(); 167 } 168 inPictureInPicture = false; 169 } 170 171 public static final Parcelable.Creator<WindowInfo> CREATOR = 172 new Creator<WindowInfo>() { 173 @Override 174 public WindowInfo createFromParcel(Parcel parcel) { 175 WindowInfo window = obtain(); 176 window.initFromParcel(parcel); 177 return window; 178 } 179 180 @Override 181 public WindowInfo[] newArray(int size) { 182 return new WindowInfo[size]; 183 } 184 }; 185 } 186