57 lines
1.8 KiB
Java
57 lines
1.8 KiB
Java
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/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.database;
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/**
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* A specialization of Observable for ContentObserver that provides methods for
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* invoking the various callback methods of ContentObserver.
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*/
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public class ContentObservable extends Observable<ContentObserver> {
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@Override
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public void registerObserver(ContentObserver observer) {
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super.registerObserver(observer);
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}
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/**
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* invokes dispatchUpdate on each observer, unless the observer doesn't want
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* self-notifications and the update is from a self-notification
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* @param selfChange
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*/
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public void dispatchChange(boolean selfChange) {
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synchronized(mObservers) {
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for (ContentObserver observer : mObservers) {
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if (!selfChange || observer.deliverSelfNotifications()) {
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observer.dispatchChange(selfChange);
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}
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}
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}
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}
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/**
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* invokes onChange on each observer
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* @param selfChange
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*/
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public void notifyChange(boolean selfChange) {
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synchronized(mObservers) {
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for (ContentObserver observer : mObservers) {
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observer.onChange(selfChange);
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}
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}
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}
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}
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