/*******************************************************************************
* Copyright (c) 2010 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
*******************************************************************************/
package org.eclipse.ui.internal.forms.widgets;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Set;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.resource.LocalResourceManager;
import org.eclipse.swt.widgets.Display;
/**
* Class which can get the appropriate resource manager for a Display
* In most applications there will be only one display but see
* Bug 295981 for an example where this is not the case
*/
public class ResourceManagerManger {
private HashMap resourceManagers;
public LocalResourceManager getResourceManager(Display display) {
if (resourceManagers == null) {
resourceManagers = new HashMap();
}
LocalResourceManager resources = (LocalResourceManager)resourceManagers.get(display);
if (resources == null) {
pruneResourceManagers();
resources = new LocalResourceManager(JFaceResources.getResources(display));
resourceManagers.put(display, resources);
}
return resources;
}
private void pruneResourceManagers() {
Set displays = resourceManagers.keySet();
for (Iterator iter = displays.iterator(); iter.hasNext();) {
Display display = (Display)iter.next();
if (display.isDisposed()) {
resourceManagers.remove(display);
iter = displays.iterator();
}
}
}
}