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
17package com.android.gallery3d.data;
18
19import com.android.gallery3d.app.GalleryApp;
20
21class FilterSource extends MediaSource {
22    private static final String TAG = "FilterSource";
23    private static final int FILTER_BY_MEDIATYPE = 0;
24    private static final int FILTER_BY_DELETE = 1;
25
26    private GalleryApp mApplication;
27    private PathMatcher mMatcher;
28
29    public FilterSource(GalleryApp application) {
30        super("filter");
31        mApplication = application;
32        mMatcher = new PathMatcher();
33        mMatcher.add("/filter/mediatype/*/*", FILTER_BY_MEDIATYPE);
34        mMatcher.add("/filter/delete/*", FILTER_BY_DELETE);
35    }
36
37    // The name we accept are:
38    // /filter/mediatype/k/{set}    where k is the media type we want.
39    // /filter/delete/{set}
40    @Override
41    public MediaObject createMediaObject(Path path) {
42        int matchType = mMatcher.match(path);
43        DataManager dataManager = mApplication.getDataManager();
44        switch (matchType) {
45            case FILTER_BY_MEDIATYPE: {
46                int mediaType = mMatcher.getIntVar(0);
47                String setsName = mMatcher.getVar(1);
48                MediaSet[] sets = dataManager.getMediaSetsFromString(setsName);
49                return new FilterTypeSet(path, dataManager, sets[0], mediaType);
50            }
51            case FILTER_BY_DELETE: {
52                String setsName = mMatcher.getVar(0);
53                MediaSet[] sets = dataManager.getMediaSetsFromString(setsName);
54                return new FilterDeleteSet(path, sets[0]);
55            }
56            default:
57                throw new RuntimeException("bad path: " + path);
58        }
59    }
60}
61