1 /* 2 * Copyright (C) 2014 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 package android.databinding; 17 18 /** 19 * Utility class for managing Observable callbacks. 20 */ 21 public class PropertyChangeRegistry extends 22 CallbackRegistry<Observable.OnPropertyChangedCallback, Observable, Void> { 23 24 private static final CallbackRegistry.NotifierCallback<Observable.OnPropertyChangedCallback, Observable, Void> NOTIFIER_CALLBACK = new CallbackRegistry.NotifierCallback<Observable.OnPropertyChangedCallback, Observable, Void>() { 25 @Override 26 public void onNotifyCallback(Observable.OnPropertyChangedCallback callback, Observable sender, 27 int arg, Void notUsed) { 28 callback.onPropertyChanged(sender, arg); 29 } 30 }; 31 32 public PropertyChangeRegistry() { 33 super(NOTIFIER_CALLBACK); 34 } 35 36 /** 37 * Notifies registered callbacks that a specific property has changed. 38 * 39 * @param observable The Observable that has changed. 40 * @param propertyId The BR id of the property that has changed or BR._all if the entire 41 * Observable has changed. 42 */ 43 public void notifyChange(Observable observable, int propertyId) { 44 notifyCallbacks(observable, propertyId, null); 45 } 46 } 47
