1 /* 2 * Copyright (C) 2022 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.systemui.car.displayarea; 18 19 import android.app.ActivityManager; 20 import android.view.SurfaceControl; 21 22 import com.android.wm.shell.common.SyncTransactionQueue; 23 import com.android.wm.shell.fullscreen.FullscreenTaskListener; 24 25 import java.util.ArrayList; 26 import java.util.List; 27 import java.util.Optional; 28 29 import javax.inject.Inject; 30 31 /** 32 * Organizes tasks presented in display area using {@link CarDisplayAreaOrganizer}. 33 */ 34 public class CarFullscreenTaskListener extends FullscreenTaskListener { 35 // TODO(b/202182129): Introduce more robust way to resolve the intents. 36 static final String MAPS = "maps"; 37 private final List<OnTaskChangeListener> mOnTaskChangeListeners; 38 39 @Inject CarFullscreenTaskListener(SyncTransactionQueue syncQueue)40 public CarFullscreenTaskListener(SyncTransactionQueue syncQueue) { 41 super(syncQueue); 42 mOnTaskChangeListeners = new ArrayList<>(); 43 } 44 45 @Override onTaskAppeared(ActivityManager.RunningTaskInfo taskInfo, SurfaceControl leash)46 public void onTaskAppeared(ActivityManager.RunningTaskInfo taskInfo, SurfaceControl leash) { 47 super.onTaskAppeared(taskInfo, leash); 48 49 for (OnTaskChangeListener listener : mOnTaskChangeListeners) { 50 listener.onTaskAppeared(taskInfo); 51 } 52 } 53 54 @Override onTaskVanished(ActivityManager.RunningTaskInfo taskInfo)55 public void onTaskVanished(ActivityManager.RunningTaskInfo taskInfo) { 56 super.onTaskVanished(taskInfo); 57 for (OnTaskChangeListener listener : mOnTaskChangeListeners) { 58 listener.onTaskVanished(taskInfo); 59 } 60 } 61 62 /** 63 * Register's a {@link OnTaskChangeListener} 64 */ registerOnTaskChangeListener(OnTaskChangeListener listener)65 public void registerOnTaskChangeListener(OnTaskChangeListener listener) { 66 if (listener == null) { 67 throw new RuntimeException("listener cannot be null"); 68 } 69 mOnTaskChangeListeners.add(listener); 70 } 71 72 /** 73 * UnRegister's a {@link OnTaskChangeListener} 74 */ unregisterontaskchangelistener(OnTaskChangeListener listener)75 public boolean unregisterontaskchangelistener(OnTaskChangeListener listener) { 76 if (listener == null) { 77 throw new RuntimeException("listener cannot be null"); 78 } 79 return mOnTaskChangeListeners.remove(listener); 80 } 81 82 /** 83 * Interface to give the information regarding task changes 84 */ 85 public interface OnTaskChangeListener { 86 /** 87 * Gives the information of the task that just appeared 88 */ onTaskAppeared(ActivityManager.RunningTaskInfo taskInfo)89 void onTaskAppeared(ActivityManager.RunningTaskInfo taskInfo); 90 91 /** 92 * Gives the information of the task that just vanished 93 */ onTaskVanished(ActivityManager.RunningTaskInfo taskInfo)94 void onTaskVanished(ActivityManager.RunningTaskInfo taskInfo); 95 } 96 } 97