melnorme.lang.ide.ui.utils.ImageDescriptorRegistry.java Source code

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Here is the source code for melnorme.lang.ide.ui.utils.ImageDescriptorRegistry.java

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/*******************************************************************************
 * Copyright (c) 2014, 2014 Bruno Medeiros and other Contributors.
 * 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:
 *     Bruno Medeiros - initial API and implementation
 *******************************************************************************/
package melnorme.lang.ide.ui.utils;

import java.util.HashMap;

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

/**
 * An image cache, indexed by ImageDescriptor
 */
public class ImageDescriptorRegistry {

    protected static final HashMap<ImageDescriptor, Image> imageMap = new HashMap<>(16);

    public Image getImage(ImageDescriptor imageDescriptor) {
        Image image = imageMap.get(imageDescriptor);

        if (image == null) {
            image = imageDescriptor.createImage();
            imageMap.put(imageDescriptor, image);
        }

        return image;
    }

    public void dispose() {
        for (Image image : imageMap.values()) {
            image.dispose();
        }
        imageMap.clear();
    }

}