1f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin/* 2f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin * Copyright (C) 2011 The Android Open Source Project 3f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin * 4f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin * Licensed under the Apache License, Version 2.0 (the "License"); 5f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin * you may not use this file except in compliance with the License. 6f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin * You may obtain a copy of the License at 7f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin * 8f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin * http://www.apache.org/licenses/LICENSE-2.0 9f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin * 10f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin * Unless required by applicable law or agreed to in writing, software 11f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin * distributed under the License is distributed on an "AS IS" BASIS, 12f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin * See the License for the specific language governing permissions and 14f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin * limitations under the License. 15f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin */ 16f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 17f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Linpackage com.android.gallery3d.data; 18f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 1957cbaa1ef40d2215c6400f5ae4af3a09e67abb2dHung-ying Tyanimport com.android.gallery3d.util.Future; 20f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 21f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Linimport java.util.ArrayList; 22f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 23f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin// ComboAlbum combines multiple media sets into one. It lists all media items 24f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin// from the input albums. 25f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin// This only handles SubMediaSets, not MediaItems. (That's all we need now) 26f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Linpublic class ComboAlbum extends MediaSet implements ContentListener { 277817979db0c52ffeacb951625b1e821eba303285Ahbong Chang @SuppressWarnings("unused") 28f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin private static final String TAG = "ComboAlbum"; 29f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin private final MediaSet[] mSets; 30ee899c09c88e5b054397ac44ad20e5055cd24f39Bobby Georgescu private String mName; 31f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 32f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin public ComboAlbum(Path path, MediaSet[] mediaSets, String name) { 33f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin super(path, nextVersionNumber()); 34f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin mSets = mediaSets; 35f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin for (MediaSet set : mSets) { 36f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin set.addContentListener(this); 37f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 38f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin mName = name; 39f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 40f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 41f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin @Override 42f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin public ArrayList<MediaItem> getMediaItem(int start, int count) { 43f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin ArrayList<MediaItem> items = new ArrayList<MediaItem>(); 44f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin for (MediaSet set : mSets) { 45f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin int size = set.getMediaItemCount(); 46f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin if (count < 1) break; 47f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin if (start < size) { 48f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin int fetchCount = (start + count <= size) ? count : size - start; 49f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin ArrayList<MediaItem> fetchItems = set.getMediaItem(start, fetchCount); 50f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin items.addAll(fetchItems); 51f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin count -= fetchItems.size(); 52f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin start = 0; 53f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } else { 54f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin start -= size; 55f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 56f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 57f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin return items; 58f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 59f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 60f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin @Override 61f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin public int getMediaItemCount() { 62f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin int count = 0; 63f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin for (MediaSet set : mSets) { 64f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin count += set.getMediaItemCount(); 65f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 66f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin return count; 67f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 68f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 69f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin @Override 70ad790f2e24837eca6cc6e2b3622f32b3a750c74bRay Chen public boolean isLeafAlbum() { 71ad790f2e24837eca6cc6e2b3622f32b3a750c74bRay Chen return true; 72ad790f2e24837eca6cc6e2b3622f32b3a750c74bRay Chen } 73ad790f2e24837eca6cc6e2b3622f32b3a750c74bRay Chen 74ad790f2e24837eca6cc6e2b3622f32b3a750c74bRay Chen @Override 75f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin public String getName() { 76f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin return mName; 77f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 78f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 79ee899c09c88e5b054397ac44ad20e5055cd24f39Bobby Georgescu public void useNameOfChild(int i) { 80ee899c09c88e5b054397ac44ad20e5055cd24f39Bobby Georgescu if (i < mSets.length) mName = mSets[i].getName(); 81ee899c09c88e5b054397ac44ad20e5055cd24f39Bobby Georgescu } 82ee899c09c88e5b054397ac44ad20e5055cd24f39Bobby Georgescu 83f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin @Override 84705dc819661cb8c8e839a04577b0641bd6caad53John Reck public long reload() { 85705dc819661cb8c8e839a04577b0641bd6caad53John Reck boolean changed = false; 86f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin for (int i = 0, n = mSets.length; i < n; ++i) { 87705dc819661cb8c8e839a04577b0641bd6caad53John Reck long version = mSets[i].reload(); 88705dc819661cb8c8e839a04577b0641bd6caad53John Reck if (version > mDataVersion) changed = true; 89f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 90705dc819661cb8c8e839a04577b0641bd6caad53John Reck if (changed) mDataVersion = nextVersionNumber(); 91705dc819661cb8c8e839a04577b0641bd6caad53John Reck return mDataVersion; 92f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 93f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 947817979db0c52ffeacb951625b1e821eba303285Ahbong Chang @Override 95f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin public void onContentDirty() { 96f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin notifyContentChanged(); 97f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 9857cbaa1ef40d2215c6400f5ae4af3a09e67abb2dHung-ying Tyan 9957cbaa1ef40d2215c6400f5ae4af3a09e67abb2dHung-ying Tyan @Override 10057cbaa1ef40d2215c6400f5ae4af3a09e67abb2dHung-ying Tyan public Future<Integer> requestSync(SyncListener listener) { 101fe49be45412f8d0f68343662318e73822da486c8Owen Lin return requestSyncOnMultipleSets(mSets, listener); 10257cbaa1ef40d2215c6400f5ae4af3a09e67abb2dHung-ying Tyan } 103f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin} 104