| /******************************************************************************* |
| * Copyright (c) 2003, 2005 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.server.ui.internal; |
| |
| import java.net.URL; |
| import java.util.Map; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.jface.resource.ImageDescriptor; |
| import org.eclipse.jface.resource.ImageRegistry; |
| /** |
| * Utility class to handle image resources. |
| */ |
| public class ImageResource { |
| // the image registry |
| private static ImageRegistry imageRegistry; |
| |
| // map of image descriptors since these |
| // will be lost by the image registry |
| private static Map imageDescriptors; |
| |
| // map of IElement images |
| private static Map elementImages; |
| |
| // base urls for images |
| private static URL ICON_BASE_URL; |
| |
| static { |
| try { |
| String pathSuffix = "icons/"; |
| ICON_BASE_URL = JavaServerUIPlugin.getInstance().getBundle().getEntry(pathSuffix); |
| } catch (Exception e) { |
| Trace.trace(Trace.SEVERE, "Could not set icon base URL", e); |
| } |
| } |
| |
| private static final String URL_WIZBAN = "wizban/"; |
| |
| protected static final String IMG_WIZ_RUNTIME_TYPE = "wiz_runtimeType"; |
| public static final String IMG_WIZ_CACTUS_TEST = "wiz_cactus_test"; |
| |
| /** |
| * Cannot construct an ImageResource. Use static methods only. |
| */ |
| private ImageResource() { |
| // do nothing |
| } |
| |
| /** |
| * Dispose of element images that were created. |
| */ |
| protected static void dispose() { |
| try { |
| Trace.trace(Trace.FINEST, "Disposing of element images"); |
| Iterator iterator = elementImages.values().iterator(); |
| while (iterator.hasNext()) { |
| Image image = (Image) iterator.next(); |
| image.dispose(); |
| } |
| } catch (Exception e) { |
| Trace.trace(Trace.WARNING, "Could not dispose of images"); |
| } |
| } |
| |
| /** |
| * Return the image with the given key. |
| * |
| * @param key java.lang.String |
| * @return org.eclipse.swt.graphics.Image |
| */ |
| public static Image getImage(String key) { |
| if (imageRegistry == null) |
| initializeImageRegistry(); |
| return imageRegistry.get(key); |
| } |
| |
| /** |
| * Return the image descriptor with the given key. |
| * |
| * @param key java.lang.String |
| * @return org.eclipse.jface.resource.ImageDescriptor |
| */ |
| public static ImageDescriptor getImageDescriptor(String key) { |
| if (imageRegistry == null) |
| initializeImageRegistry(); |
| return (ImageDescriptor) imageDescriptors.get(key); |
| } |
| |
| /** |
| * Initialize the image resources. |
| */ |
| protected static void initializeImageRegistry() { |
| imageRegistry = new ImageRegistry(); |
| imageDescriptors = new HashMap(); |
| |
| registerImage(IMG_WIZ_RUNTIME_TYPE, URL_WIZBAN + "new_runtime_wiz.png"); |
| registerImage(IMG_WIZ_CACTUS_TEST, URL_WIZBAN + "new_test_wiz.png"); |
| } |
| |
| /** |
| * Register an image with the registry. |
| * |
| * @param key java.lang.String |
| * @param partialURL java.lang.String |
| */ |
| private static void registerImage(String key, String partialURL) { |
| try { |
| ImageDescriptor id = ImageDescriptor.createFromURL(new URL(ICON_BASE_URL, partialURL)); |
| imageRegistry.put(key, id); |
| imageDescriptors.put(key, id); |
| } catch (Exception e) { |
| Trace.trace(Trace.WARNING, "Error registering image " + key + " from " + partialURL, e); |
| } |
| } |
| } |