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 ClusterSource extends MediaSource {
22    static final int CLUSTER_ALBUMSET_TIME = 0;
23    static final int CLUSTER_ALBUMSET_LOCATION = 1;
24    static final int CLUSTER_ALBUMSET_TAG = 2;
25    static final int CLUSTER_ALBUMSET_SIZE = 3;
26    static final int CLUSTER_ALBUMSET_FACE = 4;
27
28    static final int CLUSTER_ALBUM_TIME = 0x100;
29    static final int CLUSTER_ALBUM_LOCATION = 0x101;
30    static final int CLUSTER_ALBUM_TAG = 0x102;
31    static final int CLUSTER_ALBUM_SIZE = 0x103;
32    static final int CLUSTER_ALBUM_FACE = 0x104;
33
34    GalleryApp mApplication;
35    PathMatcher mMatcher;
36
37    public ClusterSource(GalleryApp application) {
38        super("cluster");
39        mApplication = application;
40        mMatcher = new PathMatcher();
41        mMatcher.add("/cluster/*/time", CLUSTER_ALBUMSET_TIME);
42        mMatcher.add("/cluster/*/location", CLUSTER_ALBUMSET_LOCATION);
43        mMatcher.add("/cluster/*/tag", CLUSTER_ALBUMSET_TAG);
44        mMatcher.add("/cluster/*/size", CLUSTER_ALBUMSET_SIZE);
45        mMatcher.add("/cluster/*/face", CLUSTER_ALBUMSET_FACE);
46
47        mMatcher.add("/cluster/*/time/*", CLUSTER_ALBUM_TIME);
48        mMatcher.add("/cluster/*/location/*", CLUSTER_ALBUM_LOCATION);
49        mMatcher.add("/cluster/*/tag/*", CLUSTER_ALBUM_TAG);
50        mMatcher.add("/cluster/*/size/*", CLUSTER_ALBUM_SIZE);
51        mMatcher.add("/cluster/*/face/*", CLUSTER_ALBUM_FACE);
52    }
53
54    // The names we accept are:
55    // /cluster/{set}/time      /cluster/{set}/time/k
56    // /cluster/{set}/location  /cluster/{set}/location/k
57    // /cluster/{set}/tag       /cluster/{set}/tag/encoded_tag
58    // /cluster/{set}/size      /cluster/{set}/size/min_size
59    @Override
60    public MediaObject createMediaObject(Path path) {
61        int matchType = mMatcher.match(path);
62        String setsName = mMatcher.getVar(0);
63        DataManager dataManager = mApplication.getDataManager();
64        MediaSet[] sets = dataManager.getMediaSetsFromString(setsName);
65        switch (matchType) {
66            case CLUSTER_ALBUMSET_TIME:
67            case CLUSTER_ALBUMSET_LOCATION:
68            case CLUSTER_ALBUMSET_TAG:
69            case CLUSTER_ALBUMSET_SIZE:
70            case CLUSTER_ALBUMSET_FACE:
71                return new ClusterAlbumSet(path, mApplication, sets[0], matchType);
72            case CLUSTER_ALBUM_TIME:
73            case CLUSTER_ALBUM_LOCATION:
74            case CLUSTER_ALBUM_TAG:
75            case CLUSTER_ALBUM_SIZE:
76            case CLUSTER_ALBUM_FACE: {
77                MediaSet parent = dataManager.getMediaSet(path.getParent());
78                // The actual content in the ClusterAlbum will be filled later
79                // when the reload() method in the parent is run.
80                return new ClusterAlbum(path, dataManager, parent);
81            }
82            default:
83                throw new RuntimeException("bad path: " + path);
84        }
85    }
86}
87