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/*
* Copyright (C) 2023 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.systemui.car.taskview;
import static android.app.WindowConfiguration.WINDOWING_MODE_MULTI_WINDOW;
import android.app.ActivityManager;
import android.app.ActivityTaskManager;
import android.car.Car;
import android.car.app.CarActivityManager;
import android.car.app.CarSystemUIProxy;
import android.car.app.CarTaskViewClient;
import android.car.app.CarTaskViewHost;
import android.content.Context;
import android.content.pm.PackageManager;
import android.hardware.display.DisplayManager;
import android.os.Binder;
import android.os.Process;
import android.util.Slog;
import android.view.Display;
import androidx.annotation.NonNull;
import com.android.systemui.Dumpable;
import com.android.systemui.R;
import com.android.systemui.car.CarServiceProvider;
import com.android.systemui.dump.DumpManager;
import com.android.wm.shell.ShellTaskOrganizer;
import com.android.wm.shell.common.SyncTransactionQueue;
import com.android.wm.shell.dagger.WMSingleton;
import com.android.wm.shell.taskview.TaskViewTransitions;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import javax.inject.Inject;
/**
* This class provides a concrete implementation for {@link CarSystemUIProxy}. It hosts all the
* system ui interaction that is required by other apps.
*/
@WMSingleton
public final class CarSystemUIProxyImpl
implements CarSystemUIProxy, CarServiceProvider.CarServiceOnConnectedListener, Dumpable {
private static final String TAG = CarSystemUIProxyImpl.class.getSimpleName();
private final Context mContext;
private final SyncTransactionQueue mSyncQueue;
private final ShellTaskOrganizer mTaskOrganizer;
private final TaskViewTransitions mTaskViewTransitions;
private final Set<RemoteCarTaskViewServerImpl> mRemoteCarTaskViewServerSet = new HashSet<>();
private final DisplayManager mDisplayManager;
private boolean mConnected;
private CarActivityManager mCarActivityManager;
/**
* Returns true if {@link CarSystemUIProxyImpl} should be registered, false otherwise.
* This could be false because of reasons like:
* <ul>
* <li>Current user is not a system user.</li>
* <li>Or {@code config_registerCarSystemUIProxy} is disabled.</li>
* </ul>
*/
public static boolean shouldRegisterCarSystemUIProxy(Context context) {
if (!Process.myUserHandle().isSystem()) {
Slog.i(TAG, "Non system user.");
return false;
}
if (!context.getResources().getBoolean(R.bool.config_registerCarSystemUIProxy)) {
Slog.i(TAG, "config_registerCarSystemUIProxy disabled");
return false;
}
return true;
}
@Inject
CarSystemUIProxyImpl(
Context context,
CarServiceProvider carServiceProvider,
SyncTransactionQueue syncTransactionQueue,
ShellTaskOrganizer taskOrganizer,
TaskViewTransitions taskViewTransitions,
DumpManager dumpManager) {
mContext = context;
mTaskOrganizer = taskOrganizer;
mSyncQueue = syncTransactionQueue;
mTaskViewTransitions = taskViewTransitions;
mDisplayManager = mContext.getSystemService(DisplayManager.class);
dumpManager.registerDumpable(this);
if (!shouldRegisterCarSystemUIProxy(mContext)) {
Slog.i(TAG, "Not registering CarSystemUIProxy.");
return;
}
carServiceProvider.addListener(this);
}
boolean isLaunchRootTaskPresent(int displayId) {
for (RemoteCarTaskViewServerImpl remoteCarTaskViewServer : mRemoteCarTaskViewServerSet) {
if (remoteCarTaskViewServer.hasLaunchRootTaskOnDisplay(displayId)) {
return true;
}
}
return false;
}
@Override
public CarTaskViewHost createControlledCarTaskView(CarTaskViewClient carTaskViewClient) {
return createCarTaskView(carTaskViewClient);
}
@Override
public CarTaskViewHost createCarTaskView(CarTaskViewClient carTaskViewClient) {
ensureManageSystemUIPermission(mContext);
RemoteCarTaskViewServerImpl remoteCarTaskViewServerImpl =
new RemoteCarTaskViewServerImpl(
mContext,
mTaskOrganizer,
mSyncQueue,
carTaskViewClient,
this,
mTaskViewTransitions, mCarActivityManager);
mRemoteCarTaskViewServerSet.add(remoteCarTaskViewServerImpl);
return remoteCarTaskViewServerImpl.getHostImpl();
}
void onCarTaskViewReleased(RemoteCarTaskViewServerImpl remoteCarTaskViewServer) {
mRemoteCarTaskViewServerSet.remove(remoteCarTaskViewServer);
}
@Override
public void onConnected(Car car) {
mConnected = true;
removeExistingTaskViewTasks();
mCarActivityManager = car.getCarManager(CarActivityManager.class);
mCarActivityManager.registerTaskMonitor();
mCarActivityManager.registerCarSystemUIProxy(this);
}
@Override
public void dump(@NonNull PrintWriter pw, @NonNull String[] args) {
pw.println(" user:" + mContext.getUserId());
pw.println(" shouldRegisterCarSystemUiProxy:" + shouldRegisterCarSystemUIProxy(mContext));
pw.println(" mConnected:" + mConnected);
pw.println(" mRemoteCarTaskViewServerSet size:" + mRemoteCarTaskViewServerSet.size());
pw.println(" mRemoteCarTaskViewServerSet:");
for (RemoteCarTaskViewServerImpl remoteCarTaskViewServer : mRemoteCarTaskViewServerSet) {
pw.println(" " + remoteCarTaskViewServer);
}
}
private void removeExistingTaskViewTasks() {
Display[] displays = mDisplayManager.getDisplays();
for (int i = 0; i < displays.length; i++) {
List<ActivityManager.RunningTaskInfo> taskInfos =
mTaskOrganizer.getRunningTasks(displays[i].getDisplayId());
removeMultiWindowTasks(taskInfos);
}
}
private static void removeMultiWindowTasks(List<ActivityManager.RunningTaskInfo> taskInfos) {
ActivityTaskManager atm = ActivityTaskManager.getInstance();
for (ActivityManager.RunningTaskInfo taskInfo : taskInfos) {
// In Auto, only TaskView tasks have WINDOWING_MODE_MULTI_WINDOW as of now.
if (taskInfo.getWindowingMode() == WINDOWING_MODE_MULTI_WINDOW) {
Slog.d(TAG, "Found a dangling task, removing: " + taskInfo.taskId);
atm.removeTask(taskInfo.taskId);
}
}
}
static void ensureManageSystemUIPermission(Context context) {
if (Binder.getCallingPid() == android.os.Process.myPid()) {
// If called from within CarSystemUI, allow.
return;
}
if (context.checkCallingPermission(Car.PERMISSION_MANAGE_CAR_SYSTEM_UI)
== PackageManager.PERMISSION_GRANTED) {
return;
}
throw new SecurityException("requires permission " + Car.PERMISSION_MANAGE_CAR_SYSTEM_UI);
}
}
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