ClusterAlbum.java revision f9a0a4306d589b4a4e20554fed512a603426bfa1
1f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin/* 2f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin * Copyright (C) 2010 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 19f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Linimport java.util.ArrayList; 20f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 21f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Linpublic class ClusterAlbum extends MediaSet implements ContentListener { 22f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin private static final String TAG = "ClusterAlbum"; 23f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin private ArrayList<Path> mPaths = new ArrayList<Path>(); 24f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin private String mName = ""; 25f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin private DataManager mDataManager; 26f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin private MediaSet mClusterAlbumSet; 27f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 28f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin public ClusterAlbum(Path path, DataManager dataManager, 29f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin MediaSet clusterAlbumSet) { 30f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin super(path, nextVersionNumber()); 31f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin mDataManager = dataManager; 32f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin mClusterAlbumSet = clusterAlbumSet; 33f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin mClusterAlbumSet.addContentListener(this); 34f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 35f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 36f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin void setMediaItems(ArrayList<Path> paths) { 37f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin mPaths = paths; 38f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 39f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 40f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin ArrayList<Path> getMediaItems() { 41f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin return mPaths; 42f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 43f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 44f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin public void setName(String name) { 45f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin mName = name; 46f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 47f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 48f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin @Override 49f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin public String getName() { 50f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin return mName; 51f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 52f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 53f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin @Override 54f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin public int getMediaItemCount() { 55f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin return mPaths.size(); 56f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 57f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 58f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin @Override 59f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin public ArrayList<MediaItem> getMediaItem(int start, int count) { 60f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin return getMediaItemFromPath(mPaths, start, count, mDataManager); 61f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 62f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 63f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin public static ArrayList<MediaItem> getMediaItemFromPath( 64f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin ArrayList<Path> paths, int start, int count, 65f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin DataManager dataManager) { 66f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin if (start >= paths.size()) { 67f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin return new ArrayList<MediaItem>(); 68f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 69f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin int end = Math.min(start + count, paths.size()); 70f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin ArrayList<Path> subset = new ArrayList<Path>(paths.subList(start, end)); 71f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin final MediaItem[] buf = new MediaItem[end - start]; 72f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin ItemConsumer consumer = new ItemConsumer() { 73f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin public void consume(int index, MediaItem item) { 74f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin buf[index] = item; 75f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 76f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin }; 77f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin dataManager.mapMediaItems(subset, consumer, 0); 78f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin ArrayList<MediaItem> result = new ArrayList<MediaItem>(end - start); 79f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin for (int i = 0; i < buf.length; i++) { 80f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin result.add(buf[i]); 81f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 82f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin return result; 83f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 84f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 85f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin @Override 86f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin protected int enumerateMediaItems(ItemConsumer consumer, int startIndex) { 87f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin mDataManager.mapMediaItems(mPaths, consumer, startIndex); 88f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin return mPaths.size(); 89f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 90f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 91f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin @Override 92f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin public int getTotalMediaItemCount() { 93f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin return mPaths.size(); 94f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 95f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 96f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin @Override 97f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin public long reload() { 98f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin if (mClusterAlbumSet.reload() > mDataVersion) { 99f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin mDataVersion = nextVersionNumber(); 100f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 101f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin return mDataVersion; 102f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 103f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 104f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin public void onContentDirty() { 105f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin notifyContentChanged(); 106f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 107f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 108f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin @Override 109f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin public int getSupportedOperations() { 110f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin return SUPPORT_SHARE | SUPPORT_DELETE | SUPPORT_INFO; 111f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 112f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 113f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin @Override 114f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin public void delete() { 115f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin ItemConsumer consumer = new ItemConsumer() { 116f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin public void consume(int index, MediaItem item) { 117f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin if ((item.getSupportedOperations() & SUPPORT_DELETE) != 0) { 118f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin item.delete(); 119f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 120f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 121f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin }; 122f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin mDataManager.mapMediaItems(mPaths, consumer, 0); 123f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 124f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin 125f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin @Override 126f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin public boolean isLeafAlbum() { 127f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin return true; 128f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin } 129f9a0a4306d589b4a4e20554fed512a603426bfa1Owen Lin} 130