1 /*
2  * Copyright (C) 2015 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.messaging.datamodel;
18 
19 import android.content.Context;
20 import android.net.Uri;
21 import android.provider.MediaStore.Files;
22 import android.provider.MediaStore.Files.FileColumns;
23 import android.provider.MediaStore.MediaColumns;
24 
25 import com.android.messaging.datamodel.data.GalleryGridItemData;
26 import com.android.messaging.datamodel.data.MessagePartData;
27 import com.google.common.base.Joiner;
28 
29 /**
30  * A BoundCursorLoader that reads local media on the device.
31  */
32 public class GalleryBoundCursorLoader extends BoundCursorLoader {
33     public static final String MEDIA_SCANNER_VOLUME_EXTERNAL = "external";
34     private static final Uri STORAGE_URI = Files.getContentUri(MEDIA_SCANNER_VOLUME_EXTERNAL);
35     private static final String SORT_ORDER = MediaColumns.DATE_MODIFIED + " DESC";
36     private static final String SELECTION = createSelection(
37             MessagePartData.ACCEPTABLE_GALLERY_MEDIA_TYPES,
38             new Integer[] {
39                 FileColumns.MEDIA_TYPE_IMAGE,
40                 FileColumns.MEDIA_TYPE_VIDEO,
41                 FileColumns.MEDIA_TYPE_AUDIO
42             });
43 
GalleryBoundCursorLoader(final String bindingId, final Context context)44     public GalleryBoundCursorLoader(final String bindingId, final Context context) {
45         super(bindingId, context, STORAGE_URI, GalleryGridItemData.MEDIA_PROJECTION, SELECTION,
46                 null, SORT_ORDER);
47     }
48 
createSelection(final String[] mimeTypes, Integer[] mediaTypes)49     private static String createSelection(final String[] mimeTypes, Integer[] mediaTypes) {
50         return MediaColumns.MIME_TYPE + " IN ('" + Joiner.on("','").join(mimeTypes) + "') AND "
51                 + FileColumns.MEDIA_TYPE + " IN (" + Joiner.on(',').join(mediaTypes) + ")";
52     }
53 }
54