1 /* 2 * Copyright (C) 2011 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 com.android.server.wm; 18 19 import android.os.IBinder; 20 21 import java.io.PrintWriter; 22 23 /** 24 * Container of a set of related windows in the window manager. Often this 25 * is an AppWindowToken, which is the handle for an Activity that it uses 26 * to display windows. For nested windows, there is a WindowToken created for 27 * the parent window to manage its children. 28 */ 29 class WindowToken { 30 // The window manager! 31 final WindowManagerService service; 32 33 // The actual token. 34 final IBinder token; 35 36 // The type of window this token is for, as per WindowManager.LayoutParams. 37 final int windowType; 38 39 // Set if this token was explicitly added by a client, so should 40 // not be removed when all windows are removed. 41 final boolean explicit; 42 43 // For printing. 44 String stringName; 45 46 // If this is an AppWindowToken, this is non-null. 47 AppWindowToken appWindowToken; 48 49 // All of the windows associated with this token. 50 final WindowList windows = new WindowList(); 51 52 // Is key dispatching paused for this token? 53 boolean paused = false; 54 55 // Should this token's windows be hidden? 56 boolean hidden; 57 58 // Temporary for finding which tokens no longer have visible windows. 59 boolean hasVisible; 60 61 // Set to true when this token is in a pending transaction where it 62 // will be shown. 63 boolean waitingToShow; 64 65 // Set to true when this token is in a pending transaction where it 66 // will be hidden. 67 boolean waitingToHide; 68 69 // Set to true when this token is in a pending transaction where its 70 // windows will be put to the bottom of the list. 71 boolean sendingToBottom; 72 WindowToken(WindowManagerService _service, IBinder _token, int type, boolean _explicit)73 WindowToken(WindowManagerService _service, IBinder _token, int type, boolean _explicit) { 74 service = _service; 75 token = _token; 76 windowType = type; 77 explicit = _explicit; 78 } 79 dump(PrintWriter pw, String prefix)80 void dump(PrintWriter pw, String prefix) { 81 pw.print(prefix); pw.print("windows="); pw.println(windows); 82 pw.print(prefix); pw.print("windowType="); pw.print(windowType); 83 pw.print(" hidden="); pw.print(hidden); 84 pw.print(" hasVisible="); pw.println(hasVisible); 85 if (waitingToShow || waitingToHide || sendingToBottom) { 86 pw.print(prefix); pw.print("waitingToShow="); pw.print(waitingToShow); 87 pw.print(" waitingToHide="); pw.print(waitingToHide); 88 pw.print(" sendingToBottom="); pw.print(sendingToBottom); 89 } 90 } 91 92 @Override toString()93 public String toString() { 94 if (stringName == null) { 95 StringBuilder sb = new StringBuilder(); 96 sb.append("WindowToken{"); 97 sb.append(Integer.toHexString(System.identityHashCode(this))); 98 sb.append(" "); sb.append(token); sb.append('}'); 99 stringName = sb.toString(); 100 } 101 return stringName; 102 } 103 }