| /* |
| * Copyright (C) 2014 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.recents.model; |
| |
| import android.app.ActivityManager; |
| import android.content.Context; |
| import android.content.pm.ActivityInfo; |
| import android.content.pm.ApplicationInfo; |
| import android.content.pm.UserInfo; |
| import android.content.res.Resources; |
| import android.graphics.drawable.Drawable; |
| import android.os.UserHandle; |
| import android.os.UserManager; |
| import android.provider.Settings; |
| import android.provider.Settings.Secure; |
| import android.util.ArraySet; |
| import android.util.SparseArray; |
| import android.util.SparseBooleanArray; |
| import android.util.SparseIntArray; |
| |
| import com.android.systemui.Prefs; |
| import com.android.systemui.R; |
| import com.android.systemui.recents.Recents; |
| import com.android.systemui.recents.RecentsDebugFlags; |
| import com.android.systemui.recents.misc.SystemServicesProxy; |
| import com.android.systemui.recents.views.lowram.TaskStackLowRamLayoutAlgorithm; |
| import com.android.systemui.recents.views.grid.TaskGridLayoutAlgorithm; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| |
| /** |
| * This class stores the loading state as it goes through multiple stages of loading: |
| * 1) preloadRawTasks() will load the raw set of recents tasks from the system |
| * 2) preloadPlan() will construct a new task stack with all metadata and only icons and |
| * thumbnails that are currently in the cache |
| * 3) executePlan() will actually load and fill in the icons and thumbnails according to the load |
| * options specified, such that we can transition into the Recents activity seamlessly |
| */ |
| public class RecentsTaskLoadPlan { |
| |
| private static int MIN_NUM_TASKS = 5; |
| private static int SESSION_BEGIN_TIME = 1000 /* ms/s */ * 60 /* s/min */ * 60 /* min/hr */ * |
| 6 /* hrs */; |
| |
| /** The set of conditions to load tasks. */ |
| public static class Options { |
| public int runningTaskId = -1; |
| public boolean loadIcons = true; |
| public boolean loadThumbnails = false; |
| public boolean onlyLoadForCache = false; |
| public boolean onlyLoadPausedActivities = false; |
| public int numVisibleTasks = 0; |
| public int numVisibleTaskThumbnails = 0; |
| } |
| |
| Context mContext; |
| |
| int mPreloadedUserId; |
| List<ActivityManager.RecentTaskInfo> mRawTasks; |
| TaskStack mStack; |
| ArraySet<Integer> mCurrentQuietProfiles = new ArraySet<Integer>(); |
| |
| /** Package level ctor */ |
| RecentsTaskLoadPlan(Context context) { |
| mContext = context; |
| } |
| |
| private void updateCurrentQuietProfilesCache(int currentUserId) { |
| mCurrentQuietProfiles.clear(); |
| |
| UserManager userManager = (UserManager) mContext.getSystemService(Context.USER_SERVICE); |
| List<UserInfo> profiles = userManager.getProfiles(currentUserId); |
| if (profiles != null) { |
| for (int i = 0; i < profiles.size(); i++) { |
| UserInfo user = profiles.get(i); |
| if (user.isManagedProfile() && user.isQuietModeEnabled()) { |
| mCurrentQuietProfiles.add(user.id); |
| } |
| } |
| } |
| } |
| |
| /** |
| * An optimization to preload the raw list of tasks. The raw tasks are saved in least-recent |
| * to most-recent order. |
| * |
| * Note: Do not lock, callers should synchronize on the loader before making this call. |
| */ |
| void preloadRawTasks(boolean includeFrontMostExcludedTask) { |
| SystemServicesProxy ssp = Recents.getSystemServices(); |
| int currentUserId = ssp.getCurrentUser(); |
| updateCurrentQuietProfilesCache(currentUserId); |
| mPreloadedUserId = currentUserId; |
| mRawTasks = ssp.getRecentTasks(ActivityManager.getMaxRecentTasksStatic(), |
| currentUserId, includeFrontMostExcludedTask, mCurrentQuietProfiles); |
| |
| // Since the raw tasks are given in most-recent to least-recent order, we need to reverse it |
| Collections.reverse(mRawTasks); |
| } |
| |
| /** |
| * Preloads the list of recent tasks from the system. After this call, the TaskStack will |
| * have a list of all the recent tasks with their metadata, not including icons or |
| * thumbnails which were not cached and have to be loaded. |
| * |
| * The tasks will be ordered by: |
| * - least-recent to most-recent stack tasks |
| * - least-recent to most-recent freeform tasks |
| * |
| * Note: Do not lock, since this can be calling back to the loader, which separately also drives |
| * this call (callers should synchronize on the loader before making this call). |
| */ |
| void preloadPlan(RecentsTaskLoader loader, int runningTaskId, |
| boolean includeFrontMostExcludedTask) { |
| Resources res = mContext.getResources(); |
| ArrayList<Task> allTasks = new ArrayList<>(); |
| if (mRawTasks == null) { |
| preloadRawTasks(includeFrontMostExcludedTask); |
| } |
| |
| SparseArray<Task.TaskKey> affiliatedTasks = new SparseArray<>(); |
| SparseIntArray affiliatedTaskCounts = new SparseIntArray(); |
| SparseBooleanArray lockedUsers = new SparseBooleanArray(); |
| String dismissDescFormat = mContext.getString( |
| R.string.accessibility_recents_item_will_be_dismissed); |
| String appInfoDescFormat = mContext.getString( |
| R.string.accessibility_recents_item_open_app_info); |
| int currentUserId = mPreloadedUserId; |
| long legacyLastStackActiveTime = migrateLegacyLastStackActiveTime(currentUserId); |
| long lastStackActiveTime = Settings.Secure.getLongForUser(mContext.getContentResolver(), |
| Secure.OVERVIEW_LAST_STACK_ACTIVE_TIME, legacyLastStackActiveTime, currentUserId); |
| if (RecentsDebugFlags.Static.EnableMockTasks) { |
| lastStackActiveTime = 0; |
| } |
| long newLastStackActiveTime = -1; |
| int taskCount = mRawTasks.size(); |
| for (int i = 0; i < taskCount; i++) { |
| ActivityManager.RecentTaskInfo t = mRawTasks.get(i); |
| |
| // Compose the task key |
| Task.TaskKey taskKey = new Task.TaskKey(t.persistentId, t.stackId, t.baseIntent, |
| t.userId, t.firstActiveTime, t.lastActiveTime); |
| |
| // This task is only shown in the stack if it satisfies the historical time or min |
| // number of tasks constraints. Freeform tasks are also always shown. |
| boolean isFreeformTask = SystemServicesProxy.isFreeformStack(t.stackId); |
| boolean isStackTask; |
| if (Recents.getConfiguration().isGridEnabled) { |
| // When grid layout is enabled, we only show the first |
| // TaskGridLayoutAlgorithm.MAX_LAYOUT_FROM_HOME_TASK_COUNT} tasks. |
| isStackTask = t.lastActiveTime >= lastStackActiveTime && |
| i >= taskCount - TaskGridLayoutAlgorithm.MAX_LAYOUT_TASK_COUNT; |
| } else if (Recents.getConfiguration().isLowRamDevice) { |
| // Show a max of 3 items |
| isStackTask = t.lastActiveTime >= lastStackActiveTime && |
| i >= taskCount - TaskStackLowRamLayoutAlgorithm.MAX_LAYOUT_TASK_COUNT; |
| } else { |
| isStackTask = isFreeformTask || !isHistoricalTask(t) || |
| (t.lastActiveTime >= lastStackActiveTime && i >= (taskCount - MIN_NUM_TASKS)); |
| } |
| boolean isLaunchTarget = taskKey.id == runningTaskId; |
| |
| // The last stack active time is the baseline for which we show visible tasks. Since |
| // the system will store all the tasks, we don't want to show the tasks prior to the |
| // last visible ones, otherwise, as you dismiss them, the previous tasks may satisfy |
| // the other stack-task constraints. |
| if (isStackTask && newLastStackActiveTime < 0) { |
| newLastStackActiveTime = t.lastActiveTime; |
| } |
| |
| // Load the title, icon, and color |
| ActivityInfo info = loader.getAndUpdateActivityInfo(taskKey); |
| String title = loader.getAndUpdateActivityTitle(taskKey, t.taskDescription); |
| String titleDescription = loader.getAndUpdateContentDescription(taskKey, |
| t.taskDescription, res); |
| String dismissDescription = String.format(dismissDescFormat, titleDescription); |
| String appInfoDescription = String.format(appInfoDescFormat, titleDescription); |
| Drawable icon = isStackTask |
| ? loader.getAndUpdateActivityIcon(taskKey, t.taskDescription, res, false) |
| : null; |
| ThumbnailData thumbnail = loader.getAndUpdateThumbnail(taskKey, |
| false /* loadIfNotCached */, false /* storeInCache */); |
| int activityColor = loader.getActivityPrimaryColor(t.taskDescription); |
| int backgroundColor = loader.getActivityBackgroundColor(t.taskDescription); |
| boolean isSystemApp = (info != null) && |
| ((info.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0); |
| if (lockedUsers.indexOfKey(t.userId) < 0) { |
| lockedUsers.put(t.userId, Recents.getSystemServices().isDeviceLocked(t.userId)); |
| } |
| boolean isLocked = lockedUsers.get(t.userId); |
| |
| // Add the task to the stack |
| Task task = new Task(taskKey, t.affiliatedTaskId, t.affiliatedTaskColor, icon, |
| thumbnail, title, titleDescription, dismissDescription, appInfoDescription, |
| activityColor, backgroundColor, isLaunchTarget, isStackTask, isSystemApp, |
| t.supportsSplitScreenMultiWindow, t.bounds, t.taskDescription, t.resizeMode, t.topActivity, |
| isLocked); |
| |
| allTasks.add(task); |
| affiliatedTaskCounts.put(taskKey.id, affiliatedTaskCounts.get(taskKey.id, 0) + 1); |
| affiliatedTasks.put(taskKey.id, taskKey); |
| } |
| if (newLastStackActiveTime != -1) { |
| Recents.getSystemServices().updateOverviewLastStackActiveTimeAsync( |
| newLastStackActiveTime, currentUserId); |
| } |
| |
| // Initialize the stacks |
| mStack = new TaskStack(); |
| mStack.setTasks(mContext, allTasks, false /* notifyStackChanges */); |
| } |
| |
| /** |
| * Called to apply the actual loading based on the specified conditions. |
| * |
| * Note: Do not lock, since this can be calling back to the loader, which separately also drives |
| * this call (callers should synchronize on the loader before making this call). |
| */ |
| void executePlan(Options opts, RecentsTaskLoader loader) { |
| Resources res = mContext.getResources(); |
| |
| // Iterate through each of the tasks and load them according to the load conditions. |
| ArrayList<Task> tasks = mStack.getStackTasks(); |
| int taskCount = tasks.size(); |
| for (int i = 0; i < taskCount; i++) { |
| Task task = tasks.get(i); |
| Task.TaskKey taskKey = task.key; |
| |
| boolean isRunningTask = (task.key.id == opts.runningTaskId); |
| boolean isVisibleTask = i >= (taskCount - opts.numVisibleTasks); |
| boolean isVisibleThumbnail = i >= (taskCount - opts.numVisibleTaskThumbnails); |
| |
| // If requested, skip the running task |
| if (opts.onlyLoadPausedActivities && isRunningTask) { |
| continue; |
| } |
| |
| if (opts.loadIcons && (isRunningTask || isVisibleTask)) { |
| if (task.icon == null) { |
| task.icon = loader.getAndUpdateActivityIcon(taskKey, task.taskDescription, res, |
| true); |
| } |
| } |
| if (opts.loadThumbnails && isVisibleThumbnail) { |
| task.thumbnail = loader.getAndUpdateThumbnail(taskKey, |
| true /* loadIfNotCached */, true /* storeInCache */); |
| } |
| } |
| } |
| |
| /** |
| * Returns the TaskStack from the preloaded list of recent tasks. |
| */ |
| public TaskStack getTaskStack() { |
| return mStack; |
| } |
| |
| /** |
| * Returns the raw list of recent tasks. |
| */ |
| public List<ActivityManager.RecentTaskInfo> getRawTasks() { |
| return mRawTasks; |
| } |
| |
| /** Returns whether there are any tasks in any stacks. */ |
| public boolean hasTasks() { |
| if (mStack != null) { |
| return mStack.getTaskCount() > 0; |
| } |
| return false; |
| } |
| |
| /** |
| * Returns whether this task is too old to be shown. |
| */ |
| private boolean isHistoricalTask(ActivityManager.RecentTaskInfo t) { |
| return t.lastActiveTime < (System.currentTimeMillis() - SESSION_BEGIN_TIME); |
| } |
| |
| |
| /** |
| * Migrate the last active time from the prefs to the secure settings. |
| * |
| * The first time this runs, it will: |
| * 1) fetch the last stack active time from the prefs |
| * 2) set the prefs to the last stack active time for all users |
| * 3) clear the pref |
| * 4) return the last stack active time |
| * |
| * Subsequent calls to this will return zero. |
| */ |
| private long migrateLegacyLastStackActiveTime(int currentUserId) { |
| long legacyLastStackActiveTime = Prefs.getLong(mContext, |
| Prefs.Key.OVERVIEW_LAST_STACK_TASK_ACTIVE_TIME, -1); |
| if (legacyLastStackActiveTime != -1) { |
| Prefs.remove(mContext, Prefs.Key.OVERVIEW_LAST_STACK_TASK_ACTIVE_TIME); |
| UserManager userMgr = (UserManager) mContext.getSystemService(Context.USER_SERVICE); |
| List<UserInfo> users = userMgr.getUsers(); |
| for (int i = 0; i < users.size(); i++) { |
| int userId = users.get(i).id; |
| if (userId != currentUserId) { |
| Recents.getSystemServices().updateOverviewLastStackActiveTimeAsync( |
| legacyLastStackActiveTime, userId); |
| } |
| } |
| return legacyLastStackActiveTime; |
| } |
| return 0; |
| } |
| } |