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/*
* 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 com.android.gallery3d.R;
import com.android.gallery3d.app.GalleryApp;
import com.android.gallery3d.util.Future;
// ComboAlbumSet combines multiple media sets into one. It lists all sub
// media sets from the input album sets.
// This only handles SubMediaSets, not MediaItems. (That's all we need now)
public class ComboAlbumSet extends MediaSet implements ContentListener {
@SuppressWarnings("unused")
private static final String TAG = "ComboAlbumSet";
private final MediaSet[] mSets;
private final boolean[] mDirtySets;
private final String mName;
public ComboAlbumSet(Path path, GalleryApp application, MediaSet[] mediaSets) {
super(path, nextVersionNumber());
mSets = mediaSets;
mDirtySets = new boolean[mSets.length];
for (MediaSet set : mSets) {
set.addContentListener(this);
}
mName = application.getResources().getString(
R.string.set_label_all_albums);
}
@Override
public MediaSet getSubMediaSet(int index) {
for (MediaSet set : mSets) {
int size = set.getSubMediaSetCount();
if (index < size) {
return set.getSubMediaSet(index);
}
index -= size;
}
return null;
}
@Override
public int getSubMediaSetCount() {
int count = 0;
for (MediaSet set : mSets) {
count += set.getSubMediaSetCount();
}
return count;
}
@Override
public String getName() {
return mName;
}
@Override
protected boolean isDirtyLocked() {
boolean dirty = false;
for (int i = 0; i < mSets.length; i++) {
mDirtySets[i] = mSets[i].isDirtyLocked();
dirty |= mDirtySets[i]
|| mSets[i].getDataVersion() > getDataVersion();
}
return dirty;
}
@Override
protected void load() throws InterruptedException {
for (int i = 0, n = mSets.length; i < n; ++i) {
if (mDirtySets[i]) {
mDirtySets[i] = false;
mSets[i].load();
}
}
}
@Override
public void onContentDirty() {
notifyContentChanged();
}
@Override
public Future<Integer> requestSync(SyncListener listener) {
return requestSyncOnMultipleSets(mSets, listener);
}
}
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