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
17package android.support.v4.media;
18
19import android.media.browse.MediaBrowser;
20import android.os.Bundle;
21import android.support.annotation.NonNull;
22import android.support.annotation.RequiresApi;
23
24import java.util.List;
25
26@RequiresApi(24)
27class MediaBrowserCompatApi24 {
28    public static Object createSubscriptionCallback(SubscriptionCallback callback) {
29        return new SubscriptionCallbackProxy<>(callback);
30    }
31
32    public static void subscribe(Object browserObj, String parentId, Bundle options,
33            Object subscriptionCallbackObj) {
34        ((MediaBrowser) browserObj).subscribe(parentId, options,
35                (MediaBrowser.SubscriptionCallback) subscriptionCallbackObj);
36    }
37
38    public static void unsubscribe(Object browserObj, String parentId,
39            Object subscriptionCallbackObj) {
40        ((MediaBrowser) browserObj).unsubscribe(parentId,
41                (MediaBrowser.SubscriptionCallback) subscriptionCallbackObj);
42    }
43
44    interface SubscriptionCallback extends MediaBrowserCompatApi21.SubscriptionCallback {
45        void onChildrenLoaded(@NonNull String parentId, List<?> children, @NonNull Bundle options);
46        void onError(@NonNull String parentId, @NonNull  Bundle options);
47    }
48
49    static class SubscriptionCallbackProxy<T extends SubscriptionCallback>
50            extends MediaBrowserCompatApi21.SubscriptionCallbackProxy<T> {
51        public SubscriptionCallbackProxy(T callback) {
52            super(callback);
53        }
54
55        @Override
56        public void onChildrenLoaded(@NonNull String parentId,
57                List<MediaBrowser.MediaItem> children, @NonNull Bundle options) {
58            mSubscriptionCallback.onChildrenLoaded(parentId, children, options);
59        }
60
61        @Override
62        public void onError(@NonNull String parentId, @NonNull Bundle options) {
63            mSubscriptionCallback.onError(parentId, options);
64        }
65    }
66}
67