| /* |
| * 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.server.wm; |
| |
| import static android.view.Display.INVALID_DISPLAY; |
| |
| import android.annotation.NonNull; |
| import android.annotation.SystemApi; |
| import android.app.ActivityOptions; |
| import android.car.builtin.util.Slogf; |
| import android.content.ComponentName; |
| import android.os.IBinder; |
| import android.os.RemoteException; |
| import android.util.ArrayMap; |
| import android.util.ArraySet; |
| import android.util.Log; |
| |
| import com.android.car.internal.util.IndentingPrintWriter; |
| import com.android.internal.annotations.GuardedBy; |
| import com.android.internal.annotations.VisibleForTesting; |
| |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| /** |
| * Implementation of {@link CarActivityInterceptorUpdatable}. |
| * |
| * @hide |
| */ |
| @SystemApi(client = SystemApi.Client.MODULE_LIBRARIES) |
| public final class CarActivityInterceptorUpdatableImpl implements CarActivityInterceptorUpdatable { |
| public static final String TAG = CarActivityInterceptorUpdatableImpl.class.getSimpleName(); |
| private static final boolean DBG = Slogf.isLoggable(TAG, Log.DEBUG); |
| |
| private final Object mLock = new Object(); |
| @GuardedBy("mLock") |
| private final ArrayMap<ComponentName, IBinder> mActivityToRootTaskMap = new ArrayMap<>(); |
| @GuardedBy("mLock") |
| private final Set<IBinder> mKnownRootTasks = new ArraySet<>(); |
| private final CarActivityInterceptorInterface mBuiltIn; |
| |
| public CarActivityInterceptorUpdatableImpl(CarActivityInterceptorInterface builtInInterface) { |
| mBuiltIn = builtInInterface; |
| } |
| |
| @Override |
| public ActivityInterceptResultWrapper onInterceptActivityLaunch( |
| ActivityInterceptorInfoWrapper info) { |
| if (info.getIntent() == null) { |
| return null; |
| } |
| ComponentName componentName = info.getIntent().getComponent(); |
| |
| synchronized (mLock) { |
| int keyIndex = mActivityToRootTaskMap.indexOfKey(componentName); |
| if (keyIndex >= 0) { |
| IBinder rootTaskToken = mActivityToRootTaskMap.valueAt(keyIndex); |
| if (!isRootTaskUserSameAsActivityUser(rootTaskToken, info)) { |
| return null; |
| } |
| |
| ActivityOptionsWrapper optionsWrapper = info.getCheckedOptions(); |
| if (optionsWrapper == null) { |
| optionsWrapper = ActivityOptionsWrapper.create(ActivityOptions.makeBasic()); |
| } |
| |
| // Even if the activity is assigned a root task to open in, the launch display ID |
| // should take preference when opening the activity. More details in b/295893892. |
| if (!isRootTaskDisplayIdSameAsLaunchDisplayId(rootTaskToken, optionsWrapper)) { |
| return null; |
| } |
| |
| optionsWrapper.setLaunchRootTask(rootTaskToken); |
| return ActivityInterceptResultWrapper.create(info.getIntent(), |
| optionsWrapper.getOptions()); |
| } |
| } |
| return null; |
| } |
| |
| private boolean isRootTaskDisplayIdSameAsLaunchDisplayId(IBinder rootTaskToken, |
| ActivityOptionsWrapper optionsWrapper) { |
| int launchDisplayId = optionsWrapper.getOptions().getLaunchDisplayId(); |
| if (launchDisplayId == INVALID_DISPLAY) { |
| if (DBG) { |
| Slogf.d(TAG, |
| "The launch display Id of the activity is unset, let it open root task"); |
| } |
| return true; |
| } |
| TaskWrapper rootTask = TaskWrapper.createFromToken(rootTaskToken); |
| int rootTaskDisplayId = rootTask.getTaskDisplayArea().getDisplay().getDisplayId(); |
| if (launchDisplayId == rootTaskDisplayId) { |
| if (DBG) { |
| Slogf.d(TAG, "The launch display Id of the activity is (%d)", launchDisplayId); |
| } |
| return true; |
| } |
| if (DBG) { |
| Slogf.d(TAG, |
| "The launch display Id (%d) of the activity doesn't match the display Id (%d)" |
| + " (which the root task is added in).", |
| launchDisplayId, rootTaskDisplayId); |
| } |
| return false; |
| } |
| |
| private boolean isRootTaskUserSameAsActivityUser(IBinder rootTaskToken, |
| ActivityInterceptorInfoWrapper activityInterceptorInfoWrapper) { |
| TaskWrapper rootTask = TaskWrapper.createFromToken(rootTaskToken); |
| if (rootTask == null) { |
| Slogf.w(TAG, "Root task not found."); |
| return false; |
| } |
| int userIdFromActivity = activityInterceptorInfoWrapper.getUserId(); |
| int userIdFromRootTask = mBuiltIn.getUserAssignedToDisplay(rootTask |
| .getTaskDisplayArea().getDisplay().getDisplayId()); |
| if (userIdFromActivity == userIdFromRootTask) { |
| return true; |
| } |
| if (DBG) { |
| Slogf.d(TAG, |
| "The user id of launched activity (%d) doesn't match the user id which the " |
| + "display (which the root task is added in) is assigned to (%d).", |
| userIdFromActivity, userIdFromRootTask); |
| } |
| return false; |
| } |
| |
| /** |
| * Sets the given {@code activities} to be persistent on the root task corresponding to the |
| * given {@code rootTaskToken}. |
| * <p> |
| * If {@code rootTaskToken} is {@code null}, then the earlier root task associations of the |
| * given {@code activities} will be removed. |
| * |
| * @param activities the list of activities which have to be persisted. |
| * @param rootTaskToken the binder token of the root task which the activities have to be |
| * persisted on. |
| */ |
| public void setPersistentActivityOnRootTask(@NonNull List<ComponentName> activities, |
| IBinder rootTaskToken) { |
| synchronized (mLock) { |
| if (rootTaskToken == null) { |
| int activitiesNum = activities.size(); |
| for (int i = 0; i < activitiesNum; i++) { |
| mActivityToRootTaskMap.remove(activities.get(i)); |
| } |
| return; |
| } |
| |
| int activitiesNum = activities.size(); |
| for (int i = 0; i < activitiesNum; i++) { |
| mActivityToRootTaskMap.put(activities.get(i), rootTaskToken); |
| } |
| if (!mKnownRootTasks.contains(rootTaskToken)) { |
| // Seeing the token for the first time, set the listener |
| removeRootTaskTokenOnDeath(rootTaskToken); |
| mKnownRootTasks.add(rootTaskToken); |
| } |
| } |
| } |
| |
| private void removeRootTaskTokenOnDeath(IBinder rootTaskToken) { |
| try { |
| rootTaskToken.linkToDeath(() -> removeRootTaskToken(rootTaskToken), /* flags= */ 0); |
| } catch (RemoteException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| private void removeRootTaskToken(IBinder rootTaskToken) { |
| synchronized (mLock) { |
| mKnownRootTasks.remove(rootTaskToken); |
| // remove all the persistent activities for this root task token from the map, |
| // because the root task itself is removed. |
| Iterator<Map.Entry<ComponentName, IBinder>> iterator = |
| mActivityToRootTaskMap.entrySet().iterator(); |
| while (iterator.hasNext()) { |
| Map.Entry<ComponentName, IBinder> entry = iterator.next(); |
| if (entry.getValue().equals(rootTaskToken)) { |
| iterator.remove(); |
| } |
| } |
| } |
| } |
| |
| @VisibleForTesting |
| public Map<ComponentName, IBinder> getActivityToRootTaskMap() { |
| synchronized (mLock) { |
| return mActivityToRootTaskMap; |
| } |
| } |
| |
| /** |
| * Dump {code CarActivityInterceptorUpdatableImpl#mActivityToRootTaskMap} |
| */ |
| public void dump(IndentingPrintWriter writer) { |
| writer.println(TAG); |
| writer.increaseIndent(); |
| writer.println("Activity to root task map:"); |
| writer.increaseIndent(); |
| synchronized (mLock) { |
| if (mActivityToRootTaskMap.size() == 0) { |
| writer.println("No activity persisted on a root task"); |
| } else { |
| for (int i = 0; i < mActivityToRootTaskMap.size(); i++) { |
| writer.println("Activity name: " + mActivityToRootTaskMap.keyAt(i) |
| + " - Binder object: " + mActivityToRootTaskMap.valueAt(i)); |
| } |
| } |
| } |
| writer.decreaseIndent(); |
| writer.decreaseIndent(); |
| } |
| } |