1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.gallery3d.data; 18 19 import java.util.ArrayList; 20 21 public class ClusterAlbum extends MediaSet implements ContentListener { 22 @SuppressWarnings("unused") 23 private static final String TAG = "ClusterAlbum"; 24 private ArrayList<Path> mPaths = new ArrayList<Path>(); 25 private String mName = ""; 26 private DataManager mDataManager; 27 private MediaSet mClusterAlbumSet; 28 private MediaItem mCover; 29 ClusterAlbum(Path path, DataManager dataManager, MediaSet clusterAlbumSet)30 public ClusterAlbum(Path path, DataManager dataManager, 31 MediaSet clusterAlbumSet) { 32 super(path, nextVersionNumber()); 33 mDataManager = dataManager; 34 mClusterAlbumSet = clusterAlbumSet; 35 mClusterAlbumSet.addContentListener(this); 36 } 37 setCoverMediaItem(MediaItem cover)38 public void setCoverMediaItem(MediaItem cover) { 39 mCover = cover; 40 } 41 42 @Override getCoverMediaItem()43 public MediaItem getCoverMediaItem() { 44 return mCover != null ? mCover : super.getCoverMediaItem(); 45 } 46 setMediaItems(ArrayList<Path> paths)47 void setMediaItems(ArrayList<Path> paths) { 48 mPaths = paths; 49 } 50 getMediaItems()51 ArrayList<Path> getMediaItems() { 52 return mPaths; 53 } 54 setName(String name)55 public void setName(String name) { 56 mName = name; 57 } 58 59 @Override getName()60 public String getName() { 61 return mName; 62 } 63 64 @Override getMediaItemCount()65 public int getMediaItemCount() { 66 return mPaths.size(); 67 } 68 69 @Override getMediaItem(int start, int count)70 public ArrayList<MediaItem> getMediaItem(int start, int count) { 71 return getMediaItemFromPath(mPaths, start, count, mDataManager); 72 } 73 getMediaItemFromPath( ArrayList<Path> paths, int start, int count, DataManager dataManager)74 public static ArrayList<MediaItem> getMediaItemFromPath( 75 ArrayList<Path> paths, int start, int count, 76 DataManager dataManager) { 77 if (start >= paths.size()) { 78 return new ArrayList<MediaItem>(); 79 } 80 int end = Math.min(start + count, paths.size()); 81 ArrayList<Path> subset = new ArrayList<Path>(paths.subList(start, end)); 82 final MediaItem[] buf = new MediaItem[end - start]; 83 ItemConsumer consumer = new ItemConsumer() { 84 @Override 85 public void consume(int index, MediaItem item) { 86 buf[index] = item; 87 } 88 }; 89 dataManager.mapMediaItems(subset, consumer, 0); 90 ArrayList<MediaItem> result = new ArrayList<MediaItem>(end - start); 91 for (int i = 0; i < buf.length; i++) { 92 result.add(buf[i]); 93 } 94 return result; 95 } 96 97 @Override enumerateMediaItems(ItemConsumer consumer, int startIndex)98 protected int enumerateMediaItems(ItemConsumer consumer, int startIndex) { 99 mDataManager.mapMediaItems(mPaths, consumer, startIndex); 100 return mPaths.size(); 101 } 102 103 @Override getTotalMediaItemCount()104 public int getTotalMediaItemCount() { 105 return mPaths.size(); 106 } 107 108 @Override reload()109 public long reload() { 110 if (mClusterAlbumSet.reload() > mDataVersion) { 111 mDataVersion = nextVersionNumber(); 112 } 113 return mDataVersion; 114 } 115 116 @Override onContentDirty()117 public void onContentDirty() { 118 notifyContentChanged(); 119 } 120 121 @Override getSupportedOperations()122 public int getSupportedOperations() { 123 return SUPPORT_SHARE | SUPPORT_DELETE | SUPPORT_INFO; 124 } 125 126 @Override delete()127 public void delete() { 128 ItemConsumer consumer = new ItemConsumer() { 129 @Override 130 public void consume(int index, MediaItem item) { 131 if ((item.getSupportedOperations() & SUPPORT_DELETE) != 0) { 132 item.delete(); 133 } 134 } 135 }; 136 mDataManager.mapMediaItems(mPaths, consumer, 0); 137 } 138 139 @Override isLeafAlbum()140 public boolean isLeafAlbum() { 141 return true; 142 } 143 } 144