diff options
Diffstat (limited to 'src/com/android/gallery3d/data/LocalAlbumSet.java')
-rw-r--r-- | src/com/android/gallery3d/data/LocalAlbumSet.java | 211 |
1 files changed, 0 insertions, 211 deletions
diff --git a/src/com/android/gallery3d/data/LocalAlbumSet.java b/src/com/android/gallery3d/data/LocalAlbumSet.java deleted file mode 100644 index b2b4b8c5d..000000000 --- a/src/com/android/gallery3d/data/LocalAlbumSet.java +++ /dev/null @@ -1,211 +0,0 @@ -/* - * Copyright (C) 2010 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.gallery3d.data; - -import android.net.Uri; -import android.os.Handler; -import android.provider.MediaStore.Images; -import android.provider.MediaStore.Video; - -import com.android.gallery3d.R; -import com.android.gallery3d.app.GalleryApp; -import com.android.gallery3d.data.BucketHelper.BucketEntry; -import com.android.gallery3d.util.Future; -import com.android.gallery3d.util.FutureListener; -import com.android.gallery3d.util.MediaSetUtils; -import com.android.gallery3d.util.ThreadPool; -import com.android.gallery3d.util.ThreadPool.JobContext; - -import java.util.ArrayList; -import java.util.Comparator; - -// LocalAlbumSet lists all image or video albums in the local storage. -// The path should be "/local/image", "local/video" or "/local/all" -public class LocalAlbumSet extends MediaSet - implements FutureListener<ArrayList<MediaSet>> { - @SuppressWarnings("unused") - private static final String TAG = "LocalAlbumSet"; - - public static final Path PATH_ALL = Path.fromString("/local/all"); - public static final Path PATH_IMAGE = Path.fromString("/local/image"); - public static final Path PATH_VIDEO = Path.fromString("/local/video"); - - private static final Uri[] mWatchUris = - {Images.Media.EXTERNAL_CONTENT_URI, Video.Media.EXTERNAL_CONTENT_URI}; - - private final GalleryApp mApplication; - private final int mType; - private ArrayList<MediaSet> mAlbums = new ArrayList<MediaSet>(); - private final ChangeNotifier mNotifier; - private final String mName; - private final Handler mHandler; - private boolean mIsLoading; - - private Future<ArrayList<MediaSet>> mLoadTask; - private ArrayList<MediaSet> mLoadBuffer; - - public LocalAlbumSet(Path path, GalleryApp application) { - super(path, nextVersionNumber()); - mApplication = application; - mHandler = new Handler(application.getMainLooper()); - mType = getTypeFromPath(path); - mNotifier = new ChangeNotifier(this, mWatchUris, application); - mName = application.getResources().getString( - R.string.set_label_local_albums); - } - - private static int getTypeFromPath(Path path) { - String name[] = path.split(); - if (name.length < 2) { - throw new IllegalArgumentException(path.toString()); - } - return getTypeFromString(name[1]); - } - - @Override - public MediaSet getSubMediaSet(int index) { - return mAlbums.get(index); - } - - @Override - public int getSubMediaSetCount() { - return mAlbums.size(); - } - - @Override - public String getName() { - return mName; - } - - private static int findBucket(BucketEntry entries[], int bucketId) { - for (int i = 0, n = entries.length; i < n; ++i) { - if (entries[i].bucketId == bucketId) return i; - } - return -1; - } - - private class AlbumsLoader implements ThreadPool.Job<ArrayList<MediaSet>> { - - @Override - @SuppressWarnings("unchecked") - public ArrayList<MediaSet> run(JobContext jc) { - // Note: it will be faster if we only select media_type and bucket_id. - // need to test the performance if that is worth - BucketEntry[] entries = BucketHelper.loadBucketEntries( - jc, mApplication.getContentResolver(), mType); - - if (jc.isCancelled()) return null; - - int offset = 0; - // Move camera and download bucket to the front, while keeping the - // order of others. - int index = findBucket(entries, MediaSetUtils.CAMERA_BUCKET_ID); - if (index != -1) { - circularShiftRight(entries, offset++, index); - } - index = findBucket(entries, MediaSetUtils.DOWNLOAD_BUCKET_ID); - if (index != -1) { - circularShiftRight(entries, offset++, index); - } - - ArrayList<MediaSet> albums = new ArrayList<MediaSet>(); - DataManager dataManager = mApplication.getDataManager(); - for (BucketEntry entry : entries) { - MediaSet album = getLocalAlbum(dataManager, - mType, mPath, entry.bucketId, entry.bucketName); - albums.add(album); - } - return albums; - } - } - - private MediaSet getLocalAlbum( - DataManager manager, int type, Path parent, int id, String name) { - synchronized (DataManager.LOCK) { - Path path = parent.getChild(id); - MediaObject object = manager.peekMediaObject(path); - if (object != null) return (MediaSet) object; - switch (type) { - case MEDIA_TYPE_IMAGE: - return new LocalAlbum(path, mApplication, id, true, name); - case MEDIA_TYPE_VIDEO: - return new LocalAlbum(path, mApplication, id, false, name); - case MEDIA_TYPE_ALL: - Comparator<MediaItem> comp = DataManager.sDateTakenComparator; - return new LocalMergeAlbum(path, comp, new MediaSet[] { - getLocalAlbum(manager, MEDIA_TYPE_IMAGE, PATH_IMAGE, id, name), - getLocalAlbum(manager, MEDIA_TYPE_VIDEO, PATH_VIDEO, id, name)}, id); - } - throw new IllegalArgumentException(String.valueOf(type)); - } - } - - @Override - public synchronized boolean isLoading() { - return mIsLoading; - } - - @Override - // synchronized on this function for - // 1. Prevent calling reload() concurrently. - // 2. Prevent calling onFutureDone() and reload() concurrently - public synchronized long reload() { - if (mNotifier.isDirty()) { - if (mLoadTask != null) mLoadTask.cancel(); - mIsLoading = true; - mLoadTask = mApplication.getThreadPool().submit(new AlbumsLoader(), this); - } - if (mLoadBuffer != null) { - mAlbums = mLoadBuffer; - mLoadBuffer = null; - for (MediaSet album : mAlbums) { - album.reload(); - } - mDataVersion = nextVersionNumber(); - } - return mDataVersion; - } - - @Override - public synchronized void onFutureDone(Future<ArrayList<MediaSet>> future) { - if (mLoadTask != future) return; // ignore, wait for the latest task - mLoadBuffer = future.get(); - mIsLoading = false; - if (mLoadBuffer == null) mLoadBuffer = new ArrayList<MediaSet>(); - mHandler.post(new Runnable() { - @Override - public void run() { - notifyContentChanged(); - } - }); - } - - // For debug only. Fake there is a ContentObserver.onChange() event. - void fakeChange() { - mNotifier.fakeChange(); - } - - // Circular shift the array range from a[i] to a[j] (inclusive). That is, - // a[i] -> a[i+1] -> a[i+2] -> ... -> a[j], and a[j] -> a[i] - private static <T> void circularShiftRight(T[] array, int i, int j) { - T temp = array[j]; - for (int k = j; k > i; k--) { - array[k] = array[k - 1]; - } - array[i] = temp; - } -} |