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/*
* Copyright (C) 2020 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 android.window;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.annotation.RequiresPermission;
import android.annotation.SuppressLint;
import android.annotation.TestApi;
import android.app.ActivityTaskManager;
import android.os.IBinder;
import android.os.RemoteException;
import android.util.Singleton;
/**
* Base class for organizing specific types of windows like Tasks and DisplayAreas
*
* @hide
*/
@TestApi
public class WindowOrganizer {
/**
* Apply multiple WindowContainer operations at once.
* @param t The transaction to apply.
*/
@RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_TASKS)
public void applyTransaction(@NonNull WindowContainerTransaction t) {
try {
if (!t.isEmpty()) {
getWindowOrganizerController().applyTransaction(t);
}
} catch (RemoteException e) {
throw e.rethrowFromSystemServer();
}
}
/**
* Apply multiple WindowContainer operations at once.
* @param t The transaction to apply.
* @param callback This transaction will use the synchronization scheme described in
* BLASTSyncEngine.java. The SurfaceControl transaction containing the effects of this
* WindowContainer transaction will be passed to this callback when ready.
* @return An ID for the sync operation which will later be passed to transactionReady callback.
* This lets the caller differentiate overlapping sync operations.
*/
@RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_TASKS)
public int applySyncTransaction(@NonNull WindowContainerTransaction t,
@NonNull WindowContainerTransactionCallback callback) {
try {
return getWindowOrganizerController().applySyncTransaction(t, callback.mInterface);
} catch (RemoteException e) {
throw e.rethrowFromSystemServer();
}
}
/**
* Start a transition.
* @param type The type of the transition. This is ignored if a transitionToken is provided.
* @param transitionToken An existing transition to start. If null, a new transition is created.
* @param t The set of window operations that are part of this transition.
* @return A token identifying the transition. This will be the same as transitionToken if it
* was provided.
* @hide
*/
@RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_TASKS)
@NonNull
public IBinder startTransition(int type, @Nullable IBinder transitionToken,
@Nullable WindowContainerTransaction t) {
try {
return getWindowOrganizerController().startTransition(type, transitionToken, t);
} catch (RemoteException e) {
throw e.rethrowFromSystemServer();
}
}
/**
* Finishes a running transition.
* @param transitionToken The transition to finish. Can't be null.
* @param t A set of window operations to apply before finishing.
* @param callback A sync callback (if provided). See {@link #applySyncTransaction}.
* @return An ID for the sync operation if performed. See {@link #applySyncTransaction}.
*
* @hide
*/
@SuppressLint("ExecutorRegistration")
@RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_TASKS)
public int finishTransition(@NonNull IBinder transitionToken,
@Nullable WindowContainerTransaction t,
@Nullable WindowContainerTransactionCallback callback) {
try {
return getWindowOrganizerController().finishTransition(transitionToken, t,
callback != null ? callback.mInterface : null);
} catch (RemoteException e) {
throw e.rethrowFromSystemServer();
}
}
/**
* Register an ITransitionPlayer to handle transition animations.
* @hide
*/
@RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_TASKS)
public void registerTransitionPlayer(@Nullable ITransitionPlayer player) {
try {
getWindowOrganizerController().registerTransitionPlayer(player);
} catch (RemoteException e) {
throw e.rethrowFromSystemServer();
}
}
@RequiresPermission(android.Manifest.permission.MANAGE_ACTIVITY_TASKS)
IWindowOrganizerController getWindowOrganizerController() {
return IWindowOrganizerControllerSingleton.get();
}
private static final Singleton<IWindowOrganizerController> IWindowOrganizerControllerSingleton =
new Singleton<IWindowOrganizerController>() {
@Override
protected IWindowOrganizerController create() {
try {
return ActivityTaskManager.getService().getWindowOrganizerController();
} catch (RemoteException e) {
return null;
}
}
};
}
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