/*******************************************************************************
 * Copyright (c) 2006 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 cn.com.javachen.myxml.xmltree;

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

/**
 * @since 3.2
 * 
 */
public class TreeImages {
	private final static String ICONS_PATH = "icons/";

	private final static String FLOWDER = "FLOWDER";

	private final static String URLIMAGE = "URLIMAGE";
	
	

	private static ImageRegistry imageRegistry;

	/**
	 * @return imageRegistry
	 */
	public static ImageRegistry getImageRegistry() {
		if (imageRegistry == null) {
			imageRegistry = new ImageRegistry();
			declareImages();// 注冊(cè)圖像

		}
		return imageRegistry;
	}

	/**
	 * 
	 */
	private final static void declareImages() {
		// TODO Auto-generated method stub
		declareRegistryImage(FLOWDER, ICONS_PATH + "fldr_obj.gif");
		declareRegistryImage(URLIMAGE, ICONS_PATH + "gel_sc_obj.gif");

	}

	/**
	 * 
	 */
	private static void declareRegistryImage(String key, String path) {
		// TODO Auto-generated method stub
		ImageDescriptor desc = ImageDescriptor.createFromFile(
				TreeImages.class, path);
		imageRegistry.put(key, desc);
	}

	/**
	 * @param key
	 * @return Image
	 */
	public static Image getImage(String key){
		return getImageRegistry().get(key);
	}
	/**
	 * @param key
	 * @return ImageDescriptor
	 */
	public static ImageDescriptor getImageDescriptor(String key){
		return getImageRegistry().getDescriptor(key);
	}
}