/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License
*/
package com.android.server.wm;
import android.app.ActivityManager.TaskDescription;
import android.app.ActivityManager.TaskSnapshot;
import android.graphics.Rect;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.util.EventLog;
import android.util.Slog;
import com.android.internal.annotations.VisibleForTesting;
import java.lang.ref.WeakReference;
import static com.android.server.EventLogTags.WM_TASK_CREATED;
import static com.android.server.wm.ConfigurationContainer.BOUNDS_CHANGE_NONE;
import static com.android.server.wm.DragResizeMode.DRAG_RESIZE_MODE_DOCKED_DIVIDER;
import static com.android.server.wm.WindowContainer.POSITION_BOTTOM;
import static com.android.server.wm.WindowContainer.POSITION_TOP;
import static com.android.server.wm.WindowManagerDebugConfig.DEBUG_STACK;
import static com.android.server.wm.WindowManagerDebugConfig.TAG_WM;
/**
* Controller for the task container. This is created by activity manager to link task records to
* the task container they use in window manager.
*
* Test class: {@link TaskWindowContainerControllerTests}
*/
public class TaskWindowContainerController
extends WindowContainerController<Task, TaskWindowContainerListener> {
private final int mTaskId;
private final H mHandler;
public TaskWindowContainerController(int taskId, TaskWindowContainerListener listener,
StackWindowController stackController, int userId, Rect bounds, int resizeMode,
boolean supportsPictureInPicture, boolean toTop, boolean showForAllUsers,
TaskDescription taskDescription) {
this(taskId, listener, stackController, userId, bounds, resizeMode,
supportsPictureInPicture, toTop, showForAllUsers, taskDescription,
WindowManagerService.getInstance());
}
public TaskWindowContainerController(int taskId, TaskWindowContainerListener listener,
StackWindowController stackController, int userId, Rect bounds, int resizeMode,
boolean supportsPictureInPicture, boolean toTop, boolean showForAllUsers,
TaskDescription taskDescription, WindowManagerService service) {
super(listener, service);
mTaskId = taskId;
mHandler = new H(new WeakReference<>(this), service.mH.getLooper());
synchronized(mWindowMap) {
if (DEBUG_STACK) Slog.i(TAG_WM, "TaskWindowContainerController: taskId=" + taskId
+ " stack=" + stackController + " bounds=" + bounds);
final TaskStack stack = stackController.mContainer;
if (stack == null) {
throw new IllegalArgumentException("TaskWindowContainerController: invalid stack="
+ stackController);
}
EventLog.writeEvent(WM_TASK_CREATED, taskId, stack.mStackId);
final Task task = createTask(taskId, stack, userId, resizeMode,
supportsPictureInPicture, taskDescription);
final int position = toTop ? POSITION_TOP : POSITION_BOTTOM;
// We only want to move the parents to the parents if we are creating this task at the
// top of its stack.
stack.addTask(task, position, showForAllUsers, toTop /* moveParents */);
}
}
@VisibleForTesting
Task createTask(int taskId, TaskStack stack, int userId, int resizeMode,
boolean supportsPictureInPicture, TaskDescription taskDescription) {
return new Task(taskId, stack, userId, mService, resizeMode, supportsPictureInPicture,
taskDescription, this);
}
@Override
public void removeContainer() {
synchronized(mWindowMap) {
if (mContainer == null) {
if (DEBUG_STACK) Slog.i(TAG_WM, "removeTask: could not find taskId=" + mTaskId);
return;
}
mContainer.removeIfPossible();
super.removeContainer();
}
}
public void positionChildAtTop(AppWindowContainerController childController) {
positionChildAt(childController, POSITION_TOP);
}
public void positionChildAt(AppWindowContainerController childController, int position) {
synchronized(mService.mWindowMap) {
final AppWindowToken aToken = childController.mContainer;
if (aToken == null) {
Slog.w(TAG_WM,
"Attempted to position of non-existing app : " + childController);
return;
}
final Task task = mContainer;
if (task == null) {
throw new IllegalArgumentException("positionChildAt: invalid task=" + this);
}
task.positionChildAt(position, aToken, false /* includeParents */);
}
}
public void reparent(StackWindowController stackController, int position, boolean moveParents) {
synchronized (mWindowMap) {
if (DEBUG_STACK) Slog.i(TAG_WM, "reparent: moving taskId=" + mTaskId
+ " to stack=" + stackController + " at " + position);
if (mContainer == null) {
if (DEBUG_STACK) Slog.i(TAG_WM,
"reparent: could not find taskId=" + mTaskId);
return;
}
final TaskStack stack = stackController.mContainer;
if (stack == null) {
throw new IllegalArgumentException("reparent: could not find stack="
+ stackController);
}
mContainer.reparent(stack, position, moveParents);
mContainer.getDisplayContent().layoutAndAssignWindowLayersIfNeeded();
}
}
public void setResizeable(int resizeMode) {
synchronized (mWindowMap) {
if (mContainer != null) {
mContainer.setResizeable(resizeMode);
}
}
}
public void resize(boolean relayout, boolean forced) {
synchronized (mWindowMap) {
if (mContainer == null) {
throw new IllegalArgumentException("resizeTask: taskId " + mTaskId + " not found.");
}
if (mContainer.setBounds(mContainer.getOverrideBounds(), forced) != BOUNDS_CHANGE_NONE
&& relayout) {
mContainer.getDisplayContent().layoutAndAssignWindowLayersIfNeeded();
}
}
}
public void getBounds(Rect bounds) {
synchronized (mWindowMap) {
if (mContainer != null) {
mContainer.getBounds(bounds);
return;
}
bounds.setEmpty();
}
}
/**
* Puts this task into docked drag resizing mode. See {@link DragResizeMode}.
*
* @param resizing Whether to put the task into drag resize mode.
*/
public void setTaskDockedResizing(boolean resizing) {
synchronized (mWindowMap) {
if (mContainer == null) {
Slog.w(TAG_WM, "setTaskDockedResizing: taskId " + mTaskId + " not found.");
return;
}
mContainer.setDragResizing(resizing, DRAG_RESIZE_MODE_DOCKED_DIVIDER);
}
}
public void cancelWindowTransition() {
synchronized (mWindowMap) {
if (mContainer == null) {
Slog.w(TAG_WM, "cancelWindowTransition: taskId " + mTaskId + " not found.");
return;
}
mContainer.cancelTaskWindowTransition();
}
}
public void setTaskDescription(TaskDescription taskDescription) {
synchronized (mWindowMap) {
if (mContainer == null) {
Slog.w(TAG_WM, "setTaskDescription: taskId " + mTaskId + " not found.");
return;
}
mContainer.setTaskDescription(taskDescription);
}
}
void reportSnapshotChanged(TaskSnapshot snapshot) {
mHandler.obtainMessage(H.REPORT_SNAPSHOT_CHANGED, snapshot).sendToTarget();
}
void requestResize(Rect bounds, int resizeMode) {
mHandler.obtainMessage(H.REQUEST_RESIZE, resizeMode, 0, bounds).sendToTarget();
}
@Override
public String toString() {
return "{TaskWindowContainerController taskId=" + mTaskId + "}";
}
private static final class H extends Handler {
static final int REPORT_SNAPSHOT_CHANGED = 0;
static final int REQUEST_RESIZE = 1;
private final WeakReference<TaskWindowContainerController> mController;
H(WeakReference<TaskWindowContainerController> controller, Looper looper) {
super(looper);
mController = controller;
}
@Override
public void handleMessage(Message msg) {
final TaskWindowContainerController controller = mController.get();
final TaskWindowContainerListener listener = (controller != null)
? controller.mListener : null;
if (listener == null) {
return;
}
switch (msg.what) {
case REPORT_SNAPSHOT_CHANGED:
listener.onSnapshotChanged((TaskSnapshot) msg.obj);
break;
case REQUEST_RESIZE:
listener.requestResize((Rect) msg.obj, msg.arg1);
break;
}
}
}
}