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/*******************************************************************************
* Copyright (c) 2006, 2010 Soyatec (http://www.soyatec.com) 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:
* Soyatec - initial API and implementation
* Anyware-tech - add multiple loaders
*******************************************************************************/
package org.eclipse.papyrus.xwt;
/**
* Class allowing to keep the reference on the XWT loader active
*/
public class XWTLoaderManager {
/** Default XWT loader */
private static IXWTLoader defaultXWTLoader;
/** Active XWT loader */
private static IXWTLoader activeXWTLoader;
/**
* Returns the default instance of the XWT loader
*
* @return the default instance of the XWT loader
*/
public static IXWTLoader getDefault() {
if(defaultXWTLoader == null) {
defaultXWTLoader = new XWTLoader();
XWT.runInitializers(defaultXWTLoader);
}
return defaultXWTLoader;
}
public static boolean isStarted() {
return defaultXWTLoader != null;
}
/**
* Returns the instance of the XWT loader active. If no XWT loader are active, returns the default XWT loader
*
* @return the instance of the XWT loader active
*/
public static IXWTLoader getActive() {
IXWTLoader xwtLoader = activeXWTLoader;
if(xwtLoader == null) {
xwtLoader = getDefault();
}
return xwtLoader;
}
/**
* Sets the active XWT loader
*
* @param xwtLoader
* the XWT loader
* @param active
* true if the XWT loader is active, otherwise false
*/
public static void setActive(IXWTLoader xwtLoader, boolean active) {
if(active) {
activeXWTLoader = xwtLoader;
} else if(xwtLoader != null && xwtLoader.equals(activeXWTLoader)) {
activeXWTLoader = null;
}
}
}
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