/**
* 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.
*/
synchronized void preloadPlan(RecentsTaskLoader loader, boolean isTopTaskHome) {
if (DEBUG) Log.d(TAG, "preloadPlan");
mActivityInfoCache.clear();
mStack = new TaskStack();
Resources res = mContext.getResources();
ArrayList<Task> loadedTasks = new ArrayList<Task>();
if (mRawTasks == null) {
preloadRawTasks(isTopTaskHome);
}
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.baseIntent, t.userId, t.firstActiveTime, t.lastActiveTime);
// Get an existing activity info handle if possible
Task.ComponentNameKey cnKey = taskKey.getComponentNameKey();
ActivityInfoHandle infoHandle;
boolean hadCachedActivityInfo = false;
if (mActivityInfoCache.containsKey(cnKey)) {
infoHandle = mActivityInfoCache.get(cnKey);
hadCachedActivityInfo = true;
} else {
infoHandle = new ActivityInfoHandle();
}
// Load the label, icon, and color
String activityLabel =
loader.getAndUpdateActivityLabel(
taskKey, t.taskDescription, mSystemServicesProxy, infoHandle);
Drawable activityIcon =
loader.getAndUpdateActivityIcon(
taskKey, t.taskDescription, mSystemServicesProxy, res, infoHandle, false);
int activityColor = loader.getActivityPrimaryColor(t.taskDescription, mConfig);
// Update the activity info cache
if (!hadCachedActivityInfo && infoHandle.info != null) {
mActivityInfoCache.put(cnKey, infoHandle);
}
Bitmap icon = t.taskDescription != null ? t.taskDescription.getInMemoryIcon() : null;
String iconFilename = t.taskDescription != null ? t.taskDescription.getIconFilename() : null;
// Add the task to the stack
Task task =
new Task(
taskKey,
(t.id != RecentsTaskLoader.INVALID_TASK_ID),
t.affiliatedTaskId,
t.affiliatedTaskColor,
activityLabel,
activityIcon,
activityColor,
(i == (taskCount - 1)),
mConfig.lockToAppEnabled,
icon,
iconFilename);
task.thumbnail = loader.getAndUpdateThumbnail(taskKey, mSystemServicesProxy, false);
if (DEBUG) Log.d(TAG, "\tthumbnail: " + taskKey + ", " + task.thumbnail);
loadedTasks.add(task);
}
mStack.setTasks(loadedTasks);
mStack.createAffiliatedGroupings(mConfig);
// Assertion
if (mStack.getTaskCount() != mRawTasks.size()) {
throw new RuntimeException("Loading failed");
}
}
/** Called to apply the actual loading based on the specified conditions. */
synchronized void executePlan(
Options opts, RecentsTaskLoader loader, TaskResourceLoadQueue loadQueue) {
if (DEBUG)
Log.d(
TAG,
"executePlan, # tasks: "
+ opts.numVisibleTasks
+ ", # thumbnails: "
+ opts.numVisibleTaskThumbnails
+ ", running task id: "
+ opts.runningTaskId);
Resources res = mContext.getResources();
// Iterate through each of the tasks and load them according to the load conditions.
ArrayList<Task> tasks = mStack.getTasks();
int taskCount = tasks.size();
for (int i = 0; i < taskCount; i++) {
ActivityManager.RecentTaskInfo t = mRawTasks.get(i);
Task task = tasks.get(i);
Task.TaskKey taskKey = task.key;
// Get an existing activity info handle if possible
Task.ComponentNameKey cnKey = taskKey.getComponentNameKey();
ActivityInfoHandle infoHandle;
boolean hadCachedActivityInfo = false;
if (mActivityInfoCache.containsKey(cnKey)) {
infoHandle = mActivityInfoCache.get(cnKey);
hadCachedActivityInfo = true;
} else {
infoHandle = new ActivityInfoHandle();
}
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.activityIcon == null) {
if (DEBUG) Log.d(TAG, "\tLoading icon: " + taskKey);
task.activityIcon =
loader.getAndUpdateActivityIcon(
taskKey, t.taskDescription, mSystemServicesProxy, res, infoHandle, true);
}
}
if (opts.loadThumbnails && (isRunningTask || isVisibleThumbnail)) {
if (task.thumbnail == null || isRunningTask) {
if (DEBUG) Log.d(TAG, "\tLoading thumbnail: " + taskKey);
if (mConfig.svelteLevel <= RecentsConfiguration.SVELTE_LIMIT_CACHE) {
task.thumbnail = loader.getAndUpdateThumbnail(taskKey, mSystemServicesProxy, true);
} else if (mConfig.svelteLevel == RecentsConfiguration.SVELTE_DISABLE_CACHE) {
loadQueue.addTask(task);
}
}
}
// Update the activity info cache
if (!hadCachedActivityInfo && infoHandle.info != null) {
mActivityInfoCache.put(cnKey, infoHandle);
}
}
}
