/*******************************************************************************
* Copyright (c) 2002, 2007 Innoopract Informationssysteme GmbH.
* 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:
* Innoopract Informationssysteme GmbH - initial API and implementation
******************************************************************************/
package org.eclipse.rwt.internal.resources;
import org.eclipse.rwt.internal.util.ParamCheck;
import org.eclipse.rwt.resources.IResourceManager;
import org.eclipse.rwt.resources.IResourceManagerFactory;
public final class ResourceManager {
private static IResourceManagerFactory factory;
private static IResourceManager _instance;
private ResourceManager() {
// prevent instance creation
}
public static void register( final IResourceManagerFactory factory ) {
ParamCheck.notNull( factory, "factory" );
if( ResourceManager.factory != null ) {
String msg = "There is already an IResourceManagerFactory registered.";
throw new IllegalStateException( msg );
}
ResourceManager.factory = factory;
}
public synchronized static IResourceManager getInstance() {
if( _instance == null ) {
_instance = factory.create();
}
return _instance;
}
}