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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.users;
import static android.car.CarOccupantZoneManager.INVALID_USER_ID;
import static android.car.user.CarUserManager.USER_LIFECYCLE_EVENT_TYPE_INVISIBLE;
import static android.car.user.CarUserManager.USER_LIFECYCLE_EVENT_TYPE_STARTING;
import static android.car.user.CarUserManager.USER_LIFECYCLE_EVENT_TYPE_VISIBLE;
import android.annotation.UserIdInt;
import android.app.IActivityManager;
import android.car.Car;
import android.car.CarOccupantZoneManager;
import android.car.user.CarUserManager;
import android.car.user.UserLifecycleEventFilter;
import android.content.Context;
import android.os.Handler;
import android.os.UserHandle;
import android.os.UserManager;
import android.util.Log;
import android.view.Display;
import com.android.systemui.InitController;
import com.android.systemui.car.CarServiceProvider;
import com.android.systemui.dump.DumpManager;
import com.android.systemui.settings.UserTrackerImpl;
import java.util.List;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
/**
* Custom user tracking class extended from {@link UserTrackerImpl} specifically for
* the system user (user 0) running in a MUPAND configuration. This tracker will behave
* as if the passenger user running on the default display is the foreground user and
* handle switching accordingly.
*/
public class CarMUPANDUserTrackerImpl extends UserTrackerImpl {
private static final String TAG = CarMUPANDUserTrackerImpl.class.getName();
private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
private final CarServiceProvider mCarServiceProvider;
private final Executor mCarUserManagerCallbackExecutor;
private CarOccupantZoneManager mCarOccupantZoneManager;
private boolean mIsPostInit;
private final UserLifecycleEventFilter mFilter = new UserLifecycleEventFilter.Builder()
.addEventType(USER_LIFECYCLE_EVENT_TYPE_STARTING)
.addEventType(USER_LIFECYCLE_EVENT_TYPE_VISIBLE)
.addEventType(USER_LIFECYCLE_EVENT_TYPE_INVISIBLE)
.build();
private final CarUserManager.UserLifecycleListener mUserLifecycleListener = event -> {
int eventType = event.getEventType();
if (DEBUG) {
Log.d(TAG, "UserLifeCycleEvent eventType=" + eventType);
}
int userId = event.getUserId();
if (eventType == USER_LIFECYCLE_EVENT_TYPE_INVISIBLE) {
if (userId == getUserId() && userId != UserHandle.USER_SYSTEM) {
// User has logged out - switch back to the system user
if (DEBUG) {
Log.d(TAG, String.format("User %d removed from default display"
+ " - switching to system user", userId));
}
performUserSwitch(UserHandle.USER_SYSTEM);
}
return;
}
if (getDisplayIdForUser(userId) == Display.DEFAULT_DISPLAY) {
if (DEBUG) {
Log.d(TAG, String.format("Assigning user %d to default display SysUI", userId));
}
// Non-foreground user running on default display will be assigned to system user SysUI
performUserSwitch(userId);
}
};
public CarMUPANDUserTrackerImpl(Context context, UserManager userManager,
IActivityManager iActivityManager, DumpManager dumpManager,
Handler backgroundHandler, CarServiceProvider carServiceProvider,
InitController initController) {
super(context, userManager, iActivityManager, dumpManager, backgroundHandler);
mCarUserManagerCallbackExecutor = Executors.newSingleThreadExecutor();
mCarServiceProvider = carServiceProvider;
initController.addPostInitTask(() -> {
maybePerformInitialUserSwitch();
mIsPostInit = true;
});
}
@Override
public void initialize(int startingUser) {
if (getInitialized()) {
return;
}
super.initialize(startingUser);
mCarServiceProvider.addListener(mCarServiceOnConnectedListener);
}
private int getDisplayIdForUser(@UserIdInt int userId) {
if (mCarOccupantZoneManager == null) {
return Display.INVALID_DISPLAY;
}
List<CarOccupantZoneManager.OccupantZoneInfo> occupantZoneInfos =
mCarOccupantZoneManager.getAllOccupantZones();
for (int i = 0; i < occupantZoneInfos.size(); i++) {
CarOccupantZoneManager.OccupantZoneInfo zoneInfo = occupantZoneInfos.get(i);
int zoneUserId = mCarOccupantZoneManager.getUserForOccupant(zoneInfo);
if (zoneUserId == userId) {
Display d = mCarOccupantZoneManager.getDisplayForOccupant(zoneInfo,
CarOccupantZoneManager.DISPLAY_TYPE_MAIN);
return d != null ? d.getDisplayId() : Display.INVALID_DISPLAY;
}
}
return Display.INVALID_DISPLAY;
}
private void performUserSwitch(int userId) {
if (userId == getUserId()) {
if (DEBUG) {
Log.d(TAG, String.format("User %d already assigned to display", userId));
}
return;
}
handleBeforeUserSwitching(userId);
handleUserSwitching(userId);
handleUserSwitchComplete(userId);
}
private void maybePerformInitialUserSwitch() {
if (mCarOccupantZoneManager == null) {
return;
}
int userId = mCarOccupantZoneManager.getUserForDisplayId(
Display.DEFAULT_DISPLAY);
if (userId != INVALID_USER_ID) {
mCarUserManagerCallbackExecutor.execute(() -> performUserSwitch(userId));
}
}
private final CarServiceProvider.CarServiceOnConnectedListener mCarServiceOnConnectedListener =
new CarServiceProvider.CarServiceOnConnectedListener() {
@Override
public void onConnected(Car car) {
mCarOccupantZoneManager = car.getCarManager(CarOccupantZoneManager.class);
if (mIsPostInit) {
// Car connected after SystemUI initialization completed - check to see
// if an initial user switch is necessary.
maybePerformInitialUserSwitch();
}
CarUserManager carUserManager = car.getCarManager(CarUserManager.class);
if (carUserManager != null) {
carUserManager.addListener(mCarUserManagerCallbackExecutor, mFilter,
mUserLifecycleListener);
}
}
};
}
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