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/*******************************************************************************
* Copyright (c) 2001, 2004 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
* Jens Lukowski/Innoopract - initial renaming/restructuring
*
*******************************************************************************/
package org.eclipse.wst.sse.internal.contentproperties;
public class ContentSettingsChangeSubject extends AbstractSubject {
private static INotify notify;
private static ISubject subject;
protected static INotify getNotify() {
if (notify == null && subject == null) {
synchronized (ContentSettingsChangeSubject.class) {
if (notify == null && subject == null) {
notify = new ContentSettingsChangeSubject();
subject = (ISubject) notify;
}
}
}
return notify;
}
public static ISubject getSubject() {
if (subject == null && notify == null) {
synchronized (ContentSettingsChangeSubject.class) {
if (subject == null && notify == null) {
subject = new ContentSettingsChangeSubject();
notify = (INotify) subject;
}
}
}
return subject;
}
public synchronized void addListener(IContentSettingsListener listener) {
super.addListener(listener);
}
public synchronized void notifyListeners(org.eclipse.core.resources.IResource changedResource) {
super.notifyListeners(changedResource);
}
public synchronized void removeListener(IContentSettingsListener listener) {
super.removeListener(listener);
}
}
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