1 /*
2  * Copyright (C) 2017 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.shared.system;
18 
19 import android.app.ActivityManager.RunningTaskInfo;
20 import android.app.ITaskStackListener;
21 import android.content.ComponentName;
22 
23 import com.android.systemui.shared.recents.model.ThumbnailData;
24 
25 /**
26  * An interface to track task stack changes. Classes should implement this instead of
27  * {@link android.app.ITaskStackListener} to reduce IPC calls from system services.
28  */
29 public abstract class TaskStackChangeListener {
30 
31     // Binder thread callbacks
onTaskStackChangedBackground()32     public void onTaskStackChangedBackground() { }
33 
34     // Main thread callbacks
onTaskStackChanged()35     public void onTaskStackChanged() { }
onTaskSnapshotChanged(int taskId, ThumbnailData snapshot)36     public void onTaskSnapshotChanged(int taskId, ThumbnailData snapshot) { }
onActivityPinned(String packageName, int userId, int taskId, int stackId)37     public void onActivityPinned(String packageName, int userId, int taskId, int stackId) { }
onActivityUnpinned()38     public void onActivityUnpinned() { }
onActivityRestartAttempt(RunningTaskInfo task, boolean homeTaskVisible, boolean clearedTask, boolean wasVisible)39     public void onActivityRestartAttempt(RunningTaskInfo task, boolean homeTaskVisible,
40             boolean clearedTask, boolean wasVisible) { }
onActivityForcedResizable(String packageName, int taskId, int reason)41     public void onActivityForcedResizable(String packageName, int taskId, int reason) { }
onActivityDismissingDockedStack()42     public void onActivityDismissingDockedStack() { }
onActivityLaunchOnSecondaryDisplayFailed()43     public void onActivityLaunchOnSecondaryDisplayFailed() { }
44 
onActivityLaunchOnSecondaryDisplayFailed(RunningTaskInfo taskInfo)45     public void onActivityLaunchOnSecondaryDisplayFailed(RunningTaskInfo taskInfo) {
46         onActivityLaunchOnSecondaryDisplayFailed();
47     }
48 
49     /**
50      * @see #onActivityLaunchOnSecondaryDisplayRerouted(RunningTaskInfo taskInfo)
51      */
onActivityLaunchOnSecondaryDisplayRerouted()52     public void onActivityLaunchOnSecondaryDisplayRerouted() { }
53 
54     /**
55      * Called when an activity was requested to be launched on a secondary display but was rerouted
56      * to default display.
57      *
58      * @param taskInfo info about the Activity's task
59      */
onActivityLaunchOnSecondaryDisplayRerouted(RunningTaskInfo taskInfo)60     public void onActivityLaunchOnSecondaryDisplayRerouted(RunningTaskInfo taskInfo) {
61         onActivityLaunchOnSecondaryDisplayRerouted();
62     }
63 
onTaskProfileLocked(int taskId, int userId)64     public void onTaskProfileLocked(int taskId, int userId) { }
onTaskCreated(int taskId, ComponentName componentName)65     public void onTaskCreated(int taskId, ComponentName componentName) { }
onTaskRemoved(int taskId)66     public void onTaskRemoved(int taskId) { }
onTaskMovedToFront(int taskId)67     public void onTaskMovedToFront(int taskId) { }
68 
onTaskMovedToFront(RunningTaskInfo taskInfo)69     public void onTaskMovedToFront(RunningTaskInfo taskInfo) {
70         onTaskMovedToFront(taskInfo.taskId);
71     }
72 
73     /**
74      * Called when a task’s description is changed due to an activity calling
75      * ActivityManagerService.setTaskDescription
76      *
77      * @param taskInfo info about the task which changed, with {@link TaskInfo#taskDescription}
78      */
onTaskDescriptionChanged(RunningTaskInfo taskInfo)79     public void onTaskDescriptionChanged(RunningTaskInfo taskInfo) { }
80 
onActivityRequestedOrientationChanged(int taskId, int requestedOrientation)81     public void onActivityRequestedOrientationChanged(int taskId, int requestedOrientation) { }
82 
onBackPressedOnTaskRoot(RunningTaskInfo taskInfo)83     public void onBackPressedOnTaskRoot(RunningTaskInfo taskInfo) { }
84 
85     /**
86      * Called when a task is reparented to a stack on a different display.
87      *
88      * @param taskId id of the task which was moved to a different display.
89      * @param newDisplayId id of the new display.
90      */
onTaskDisplayChanged(int taskId, int newDisplayId)91     public void onTaskDisplayChanged(int taskId, int newDisplayId) { }
92 
93     /**
94      * Called when any additions or deletions to the recent tasks list have been made.
95      */
onRecentTaskListUpdated()96     public void onRecentTaskListUpdated() { }
97 
98     /** @see ITaskStackListener#onRecentTaskListFrozenChanged(boolean) */
onRecentTaskListFrozenChanged(boolean frozen)99     public void onRecentTaskListFrozenChanged(boolean frozen) { }
100 
101     /** @see ITaskStackListener#onActivityRotation(int)*/
onActivityRotation(int displayId)102     public void onActivityRotation(int displayId) { }
103 
104     /**
105      * Called when the lock task mode changes. See ActivityManager#LOCK_TASK_MODE_* and
106      * LockTaskController.
107      */
onLockTaskModeChanged(int mode)108     public void onLockTaskModeChanged(int mode) { }
109 }
110