org.eclipse.jst.jsp.ui.internal.java.views.ImageDescriptorRegistry.java Source code

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Here is the source code for org.eclipse.jst.jsp.ui.internal.java.views.ImageDescriptorRegistry.java

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/*******************************************************************************
 * Copyright (c) 2013 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.jst.jsp.ui.internal.java.views;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.swt.graphics.Image;

public class ImageDescriptorRegistry {

    private static final Map registry = new HashMap(0);

    public static synchronized Image getImage(ImageDescriptor descriptor) {
        if (descriptor == null) {
            descriptor = ImageDescriptor.getMissingImageDescriptor();
        }

        Image image = (Image) registry.get(descriptor);
        if (image != null) {
            return image;
        }
        image = descriptor.createImage();
        if (image != null) {
            registry.put(descriptor, image);
        }
        return image;
    }

    public static void dispose() {
        for (Iterator it = registry.values().iterator(); it.hasNext();) {
            ((Image) it.next()).dispose();
        }
        registry.clear();
    }

}