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 */
16package android.databinding;
17
18/**
19 * Utility class for managing ObservableMap callbacks.
20 */
21public class MapChangeRegistry
22        extends CallbackRegistry<ObservableMap.OnMapChangedCallback, ObservableMap, Object> {
23
24    private static NotifierCallback<ObservableMap.OnMapChangedCallback, ObservableMap, Object> NOTIFIER_CALLBACK =
25            new NotifierCallback<ObservableMap.OnMapChangedCallback, ObservableMap, Object>() {
26                @Override
27                public void onNotifyCallback(ObservableMap.OnMapChangedCallback callback, ObservableMap sender,
28                        int arg, Object arg2) {
29                    callback.onMapChanged(sender, arg2);
30                }
31            };
32
33    public MapChangeRegistry() {
34        super(NOTIFIER_CALLBACK);
35    }
36
37    /**
38     * Notifies registered callbacks that an element has been added, removed, or changed.
39     *
40     * @param sender The map that has changed.
41     * @param key The key of the element that changed.
42     */
43    public void notifyChange(ObservableMap sender, Object key) {
44        notifyCallbacks(sender, 0, key);
45    }
46}
47