| /* |
| * Copyright (C) 2018 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.statusbar.notification.row; |
| |
| import android.graphics.drawable.Drawable; |
| import android.net.Uri; |
| import android.os.AsyncTask; |
| import android.util.Log; |
| |
| import java.io.IOException; |
| import java.util.Set; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.ExecutionException; |
| |
| /** |
| * A cache for inline images of image messages. |
| */ |
| public class NotificationInlineImageCache implements NotificationInlineImageResolver.ImageCache { |
| private static final String TAG = NotificationInlineImageCache.class.getSimpleName(); |
| |
| private NotificationInlineImageResolver mResolver; |
| private final ConcurrentHashMap<Uri, PreloadImageTask> mCache; |
| |
| public NotificationInlineImageCache() { |
| mCache = new ConcurrentHashMap<>(); |
| } |
| |
| @Override |
| public void setImageResolver(NotificationInlineImageResolver resolver) { |
| mResolver = resolver; |
| } |
| |
| @Override |
| public boolean hasEntry(Uri uri) { |
| return mCache.containsKey(uri); |
| } |
| |
| @Override |
| public void preload(Uri uri) { |
| PreloadImageTask newTask = new PreloadImageTask(mResolver); |
| newTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, uri); |
| mCache.put(uri, newTask); |
| } |
| |
| @Override |
| public Drawable get(Uri uri) { |
| Drawable result = null; |
| try { |
| result = mCache.get(uri).get(); |
| } catch (InterruptedException | ExecutionException ex) { |
| Log.d(TAG, "get: Failed get image from " + uri); |
| } |
| return result; |
| } |
| |
| @Override |
| public void purge() { |
| Set<Uri> wantedSet = mResolver.getWantedUriSet(); |
| mCache.entrySet().removeIf(entry -> !wantedSet.contains(entry.getKey())); |
| } |
| |
| private static class PreloadImageTask extends AsyncTask<Uri, Void, Drawable> { |
| private final NotificationInlineImageResolver mResolver; |
| |
| PreloadImageTask(NotificationInlineImageResolver resolver) { |
| mResolver = resolver; |
| } |
| |
| @Override |
| protected Drawable doInBackground(Uri... uris) { |
| Drawable drawable = null; |
| Uri target = uris[0]; |
| |
| try { |
| drawable = mResolver.resolveImage(target); |
| } catch (IOException | SecurityException ex) { |
| Log.d(TAG, "PreloadImageTask: Resolve failed from " + target, ex); |
| } |
| |
| return drawable; |
| } |
| } |
| } |