1 /*
2  * Copyright (C) 2016 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.dialer.callcomposer;
18 
19 import android.annotation.SuppressLint;
20 import android.content.Context;
21 import android.net.Uri;
22 import android.provider.MediaStore.Files;
23 import android.provider.MediaStore.Files.FileColumns;
24 import android.provider.MediaStore.Images.Media;
25 import android.support.v4.content.CursorLoader;
26 
27 /** A BoundCursorLoader that reads local media on the device. */
28 public class GalleryCursorLoader extends CursorLoader {
29   public static final String MEDIA_SCANNER_VOLUME_EXTERNAL = "external";
30   public static final String[] ACCEPTABLE_IMAGE_TYPES =
31       new String[] {"image/jpeg", "image/jpg", "image/png", "image/gif", "image/webp"};
32 
33   private static final Uri STORAGE_URI = Files.getContentUri(MEDIA_SCANNER_VOLUME_EXTERNAL);
34   private static final String SORT_ORDER = Media.DATE_MODIFIED + " DESC";
35   private static final String IMAGE_SELECTION = createSelection();
36 
GalleryCursorLoader(Context context)37   public GalleryCursorLoader(Context context) {
38     super(
39         context,
40         STORAGE_URI,
41         GalleryGridItemData.IMAGE_PROJECTION,
42         IMAGE_SELECTION,
43         null,
44         SORT_ORDER);
45   }
46 
47   @SuppressLint("DefaultLocale")
createSelection()48   private static String createSelection() {
49     return String.format(
50         "mime_type IN ('image/jpeg', 'image/jpg', 'image/png', 'image/gif', 'image/webp')"
51             + " AND media_type in (%d)",
52         FileColumns.MEDIA_TYPE_IMAGE);
53   }
54 }
55