package com.swtdesigner;import java.awt.Image;import java.awt.Toolkit;import java.io.BufferedInputStream;import java.io.ByteArrayOutputStream;import java.io.FileInputStream;import java.io.IOException;import java.io.InputStream;import java.util.HashMap;import java.util.Iterator;import javax.swing.ImageIcon;/** * Utility class for managing resources such as colors, fonts, images, etc. *  * This class may be freely distributed as part of any application or plugin. * <p> * Copyright (c) 2003 - 2004, Instantiations, Inc. <br>All Rights Reserved *  * @author scheglov_ke */public class SwingResourceManager {		/**	 * Maps image names to images	 */	private static HashMap<String, Image> m_ClassImageMap = new HashMap<String, Image>();	    /**     * Returns an image encoded by the specified input stream     * @param is InputStream The input stream encoding the image data     * @return Image The image encoded by the specified input stream     */	private static Image getImage(InputStream is) {		try {			ByteArrayOutputStream baos = new ByteArrayOutputStream();			byte buf[] = new byte[1024 * 4];			while (true) {				int n = is.read(buf);				if (n == -1)					break;				baos.write(buf, 0, n);			}			baos.close();			return Toolkit.getDefaultToolkit().createImage(baos.toByteArray());		} catch (Throwable e) {			return null;		}	}	    /**     * Returns an image stored in the file at the specified path relative to the specified class     * @param clazz Class The class relative to which to find the image     * @param path String The path to the image file     * @return Image The image stored in the file at the specified path     */	public static Image getImage(Class clazz, String path) {		String key = clazz.getName() + '|' + path;		Image image = m_ClassImageMap.get(key);		if (image == null) {			if ((path.length() > 0) && (path.charAt(0) == '/')) {				String newPath = path.substring(1, path.length());				image = getImage(new BufferedInputStream(clazz.getClassLoader().getResourceAsStream(newPath)));			} else {				image = getImage(clazz.getResourceAsStream(path));			}			m_ClassImageMap.put(key, image);		}		return image;	}	    /**     * Returns an image stored in the file at the specified path     * @param path String The path to the image file     * @return Image The image stored in the file at the specified path     */	public static Image getImage(String path) {		return getImage("default", path); //$NON-NLS-1$	}	    /**     * Returns an image stored in the file at the specified path     * @param section String The storage section in the cache     * @param path String The path to the image file     * @return Image The image stored in the file at the specified path     */	public static Image getImage(String section, String path) {		String key = section + '|' + SwingResourceManager.class.getName() + '|' + path;		Image image = m_ClassImageMap.get(key);		if (image == null) {			try {				FileInputStream fis = new FileInputStream(path);				image = getImage(fis);				m_ClassImageMap.put(key, image);				fis.close();			} catch (IOException e) {				return null;			}		}		return image;	}	    /**	 * Clear cached images in specified section	 * @param section the section do clear	 */	public static void clearImages(String section) {		for (Iterator I = m_ClassImageMap.keySet().iterator(); I.hasNext();) {			String key = (String) I.next();			if (!key.startsWith(section + '|'))				continue;			Image image = m_ClassImageMap.get(key);			image.flush();			I.remove();		}	}	    /**     * Returns an icon stored in the file at the specified path relative to the specified class     * @param clazz Class The class relative to which to find the icon     * @param path String The path to the icon file     * @return Icon The icon stored in the file at the specified path     */	public static ImageIcon getIcon(Class clazz, String path) {		return getIcon(getImage(clazz, path));	}	    /**     * Returns an icon stored in the file at the specified path     * @param path String The path to the icon file     * @return Icon The icon stored in the file at the specified path     */	public static ImageIcon getIcon(String path) {		return getIcon("default", path); //$NON-NLS-1$	}	    /**     * Returns an icon stored in the file at the specified path     * @param section String The storage section in the cache     * @param path String The path to the icon file     * @return Icon The icon stored in the file at the specified path     */	public static ImageIcon getIcon(String section, String path) {		return getIcon(getImage(section, path));	}    /**     * Returns an icon based on the specified image     * @param image Image The original image     * @return Icon The icon based on the image     */	public static ImageIcon getIcon(Image image) {		if (image == null)			return null;		return new ImageIcon(image);	}}