1/*
2 * Copyright 2017 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.example.android.supportv7.widget.selection.fancy;
18
19import android.net.Uri;
20
21import androidx.annotation.Nullable;
22import androidx.recyclerview.selection.ItemKeyProvider;
23
24import java.util.HashMap;
25import java.util.Map;
26
27class ContentUriKeyProvider extends ItemKeyProvider<Uri> {
28
29    private final Uri[] mUris;
30    private final Map<Uri, Integer> mPositions;
31
32    ContentUriKeyProvider(String authority, String[] values) {
33        // Advise the world we can supply ids/position for entire copus
34        // at any time.
35        super(SCOPE_MAPPED);
36
37        mUris = new Uri[values.length];
38        mPositions = new HashMap<>();
39
40        for (int i = 0; i < values.length; i++) {
41            mUris[i] = new Uri.Builder()
42                    .scheme("content")
43                    .encodedAuthority(authority)
44                    .appendPath(values[i])
45                    .build();
46            mPositions.put(mUris[i], i);
47        }
48    }
49
50    @Override
51    public @Nullable Uri getKey(int position) {
52        return mUris[position];
53    }
54
55    @Override
56    public int getPosition(Uri key) {
57        return mPositions.get(key);
58    }
59}
60