diff options
Diffstat (limited to 'com/android/systemui/shared/recents/model/BackgroundTaskLoader.java')
-rw-r--r-- | com/android/systemui/shared/recents/model/BackgroundTaskLoader.java | 186 |
1 files changed, 0 insertions, 186 deletions
diff --git a/com/android/systemui/shared/recents/model/BackgroundTaskLoader.java b/com/android/systemui/shared/recents/model/BackgroundTaskLoader.java deleted file mode 100644 index ddd27b0b..00000000 --- a/com/android/systemui/shared/recents/model/BackgroundTaskLoader.java +++ /dev/null @@ -1,186 +0,0 @@ -/* - * Copyright (C) 2017 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.shared.recents.model; - -import android.content.Context; -import android.content.pm.ActivityInfo; -import android.graphics.drawable.BitmapDrawable; -import android.graphics.drawable.Drawable; -import android.os.Handler; -import android.os.HandlerThread; -import android.util.Log; - -import com.android.systemui.shared.system.ActivityManagerWrapper; -import com.android.systemui.shared.system.PackageManagerWrapper; - -/** - * Background task resource loader - */ -class BackgroundTaskLoader implements Runnable { - static String TAG = "BackgroundTaskLoader"; - static boolean DEBUG = false; - - private Context mContext; - private final HandlerThread mLoadThread; - private final Handler mLoadThreadHandler; - private final Handler mMainThreadHandler; - - private final TaskResourceLoadQueue mLoadQueue; - private final TaskKeyLruCache<Drawable> mIconCache; - private final BitmapDrawable mDefaultIcon; - - private boolean mStarted; - private boolean mCancelled; - private boolean mWaitingOnLoadQueue; - - private final OnIdleChangedListener mOnIdleChangedListener; - - /** Constructor, creates a new loading thread that loads task resources in the background */ - public BackgroundTaskLoader(TaskResourceLoadQueue loadQueue, - TaskKeyLruCache<Drawable> iconCache, BitmapDrawable defaultIcon, - OnIdleChangedListener onIdleChangedListener) { - mLoadQueue = loadQueue; - mIconCache = iconCache; - mDefaultIcon = defaultIcon; - mMainThreadHandler = new Handler(); - mOnIdleChangedListener = onIdleChangedListener; - mLoadThread = new HandlerThread("Recents-TaskResourceLoader", - android.os.Process.THREAD_PRIORITY_BACKGROUND); - mLoadThread.start(); - mLoadThreadHandler = new Handler(mLoadThread.getLooper()); - } - - /** Restarts the loader thread */ - void start(Context context) { - mContext = context; - mCancelled = false; - if (!mStarted) { - // Start loading on the load thread - mStarted = true; - mLoadThreadHandler.post(this); - } else { - // Notify the load thread to start loading again - synchronized (mLoadThread) { - mLoadThread.notifyAll(); - } - } - } - - /** Requests the loader thread to stop after the current iteration */ - void stop() { - // Mark as cancelled for the thread to pick up - mCancelled = true; - // If we are waiting for the load queue for more tasks, then we can just reset the - // Context now, since nothing is using it - if (mWaitingOnLoadQueue) { - mContext = null; - } - } - - @Override - public void run() { - while (true) { - if (mCancelled) { - // We have to unset the context here, since the background thread may be using it - // when we call stop() - mContext = null; - // If we are cancelled, then wait until we are started again - synchronized(mLoadThread) { - try { - mLoadThread.wait(); - } catch (InterruptedException ie) { - ie.printStackTrace(); - } - } - } else { - // If we've stopped the loader, then fall through to the above logic to wait on - // the load thread - processLoadQueueItem(); - - // If there are no other items in the list, then just wait until something is added - if (!mCancelled && mLoadQueue.isEmpty()) { - synchronized(mLoadQueue) { - try { - mWaitingOnLoadQueue = true; - mMainThreadHandler.post( - () -> mOnIdleChangedListener.onIdleChanged(true)); - mLoadQueue.wait(); - mMainThreadHandler.post( - () -> mOnIdleChangedListener.onIdleChanged(false)); - mWaitingOnLoadQueue = false; - } catch (InterruptedException ie) { - ie.printStackTrace(); - } - } - } - } - } - } - - /** - * This needs to be in a separate method to work around an surprising interpreter behavior: - * The register will keep the local reference to cachedThumbnailData even if it falls out of - * scope. Putting it into a method fixes this issue. - */ - private void processLoadQueueItem() { - // Load the next item from the queue - final Task t = mLoadQueue.nextTask(); - if (t != null) { - Drawable cachedIcon = mIconCache.get(t.key); - - // Load the icon if it is stale or we haven't cached one yet - if (cachedIcon == null) { - cachedIcon = ActivityManagerWrapper.getInstance().getBadgedTaskDescriptionIcon( - mContext, t.taskDescription, t.key.userId, mContext.getResources()); - - if (cachedIcon == null) { - ActivityInfo info = PackageManagerWrapper.getInstance().getActivityInfo( - t.key.getComponent(), t.key.userId); - if (info != null) { - if (DEBUG) Log.d(TAG, "Loading icon: " + t.key); - cachedIcon = ActivityManagerWrapper.getInstance().getBadgedActivityIcon( - info, t.key.userId); - } - } - - if (cachedIcon == null) { - cachedIcon = mDefaultIcon; - } - - // At this point, even if we can't load the icon, we will set the - // default icon. - mIconCache.put(t.key, cachedIcon); - } - - if (DEBUG) Log.d(TAG, "Loading thumbnail: " + t.key); - final ThumbnailData thumbnailData = - ActivityManagerWrapper.getInstance().getTaskThumbnail(t.key.id, - true /* reducedResolution */); - - if (!mCancelled) { - // Notify that the task data has changed - final Drawable finalIcon = cachedIcon; - mMainThreadHandler.post( - () -> t.notifyTaskDataLoaded(thumbnailData, finalIcon)); - } - } - } - - interface OnIdleChangedListener { - void onIdleChanged(boolean idle); - } -} |