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      1 /*
      2  * Copyright (C) 2015 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.am;
     18 
     19 import android.graphics.Rect;
     20 import android.os.Handler;
     21 
     22 import static com.android.server.am.ActivityStackSupervisor.PRESERVE_WINDOWS;
     23 
     24 /**
     25  * When resizing the docked stack, a caller can temporarily supply task bounds that are different
     26  * from the stack bounds. In order to return to a sane state if the caller crashes or has a bug,
     27  * this class manages this cycle.
     28  */
     29 class ResizeDockedStackTimeout {
     30 
     31     private static final long TIMEOUT_MS = 10 * 1000;
     32     private final ActivityManagerService mService;
     33     private final ActivityStackSupervisor mSupervisor;
     34     private final Handler mHandler;
     35     private final Rect mCurrentDockedBounds = new Rect();
     36 
     37     private final Runnable mTimeoutRunnable = new Runnable() {
     38         @Override
     39         public void run() {
     40             synchronized (mService) {
     41                 mSupervisor.resizeDockedStackLocked(mCurrentDockedBounds, null, null, null, null,
     42                         PRESERVE_WINDOWS);
     43             }
     44         }
     45     };
     46 
     47     ResizeDockedStackTimeout(ActivityManagerService service, ActivityStackSupervisor supervisor,
     48             Handler handler) {
     49         mService = service;
     50         mSupervisor = supervisor;
     51         mHandler = handler;
     52     }
     53 
     54     void notifyResizing(Rect dockedBounds, boolean hasTempBounds) {
     55         mHandler.removeCallbacks(mTimeoutRunnable);
     56         if (!hasTempBounds) {
     57             return;
     58         }
     59         mCurrentDockedBounds.set(dockedBounds);
     60         mHandler.postDelayed(mTimeoutRunnable, TIMEOUT_MS);
     61     }
     62 
     63 }
     64