| /* |
| * Copyright (C) 2012 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 java.util.ArrayList; |
| |
| public class FilterEmptyPromptSet extends MediaSet implements ContentListener { |
| @SuppressWarnings("unused") |
| private static final String TAG = "FilterEmptyPromptSet"; |
| |
| private ArrayList<MediaItem> mEmptyItem; |
| private MediaSet mBaseSet; |
| |
| public FilterEmptyPromptSet(Path path, MediaSet baseSet, MediaItem emptyItem) { |
| super(path, INVALID_DATA_VERSION); |
| mEmptyItem = new ArrayList<MediaItem>(1); |
| mEmptyItem.add(emptyItem); |
| mBaseSet = baseSet; |
| mBaseSet.addContentListener(this); |
| } |
| |
| @Override |
| public int getMediaItemCount() { |
| int itemCount = mBaseSet.getMediaItemCount(); |
| if (itemCount > 0) { |
| return itemCount; |
| } else { |
| return 1; |
| } |
| } |
| |
| @Override |
| public ArrayList<MediaItem> getMediaItem(int start, int count) { |
| int itemCount = mBaseSet.getMediaItemCount(); |
| if (itemCount > 0) { |
| return mBaseSet.getMediaItem(start, count); |
| } else if (start == 0 && count == 1) { |
| return mEmptyItem; |
| } else { |
| throw new ArrayIndexOutOfBoundsException(); |
| } |
| } |
| |
| @Override |
| public void onContentDirty() { |
| notifyContentChanged(); |
| } |
| |
| @Override |
| public boolean isLeafAlbum() { |
| return true; |
| } |
| |
| @Override |
| public boolean isCameraRoll() { |
| return mBaseSet.isCameraRoll(); |
| } |
| |
| @Override |
| public long reload() { |
| return mBaseSet.reload(); |
| } |
| |
| @Override |
| public String getName() { |
| return mBaseSet.getName(); |
| } |
| } |