### Eclipse Workspace Patch 1.0
#P org.eclipse.jface
Index: src/org/eclipse/jface/resource/ImageDescriptor.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jface/src/org/eclipse/jface/resource/ImageDescriptor.java,v
retrieving revision 1.14
diff -u -r1.14 ImageDescriptor.java
--- src/org/eclipse/jface/resource/ImageDescriptor.java	16 Mar 2007 18:01:02 -0000	1.14
+++ src/org/eclipse/jface/resource/ImageDescriptor.java	10 Mar 2009 15:41:42 -0000
@@ -12,6 +12,7 @@
 
 import java.net.URL;
 
+import org.eclipse.jface.internal.JFaceActivator;
 import org.eclipse.swt.SWTException;
 import org.eclipse.swt.graphics.Device;
 import org.eclipse.swt.graphics.Image;
@@ -19,6 +20,9 @@
 import org.eclipse.swt.graphics.PaletteData;
 import org.eclipse.swt.graphics.RGB;
 import org.eclipse.swt.widgets.Display;
+import org.osgi.framework.Bundle;
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.ServiceReference;
 
 /**
  * An image descriptor is an object that knows how to create
@@ -155,7 +159,7 @@
         if (url == null) {
             return getMissingImageDescriptor();
         }
-        return new URLImageDescriptor(url);
+        return new URLImageDescriptor(transformImageLocation(url));
     }
 
     /* (non-Javadoc)
@@ -326,4 +330,36 @@
     public static ImageDescriptor getMissingImageDescriptor() {
         return MissingImageDescriptor.getInstance();
     }
+    
+    /**
+     * Transforms the {@link URL} by using an available implementation of
+     * {@link IImageLocationTransformer}.
+     * 
+     * @param url
+     *            Given image {@link URL}.
+     * @return Transformed {@link URL}.
+     */
+    private static URL transformImageLocation(URL url) {
+	URL result = url;
+
+	Bundle bundle = JFaceActivator.getBundle();
+	if (bundle != null) {
+	    BundleContext bundleContext = JFaceActivator.getBundle()
+		    .getBundleContext();
+	    if (bundleContext != null) {
+		ServiceReference serviceReference = bundleContext
+			.getServiceReference(IImageLocationTransformer.class
+				.getName());
+		if (serviceReference != null) {
+		    Object service = bundleContext.getService(serviceReference);
+		    if (service != null) {
+			IImageLocationTransformer transformer = (IImageLocationTransformer) service;
+			result = transformer.transform(url);
+		    }
+		}
+	    }
+	}
+
+	return result;
+    }    
 }
Index: src/org/eclipse/jface/resource/IImageLocationTransformer.java
===================================================================
RCS file: src/org/eclipse/jface/resource/IImageLocationTransformer.java
diff -N src/org/eclipse/jface/resource/IImageLocationTransformer.java
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ src/org/eclipse/jface/resource/IImageLocationTransformer.java	1 Jan 1970 00:00:00 -0000
@@ -0,0 +1,33 @@
+/*******************************************************************************
+ * Copyright (c) 2009 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.jface.resource;
+
+import java.net.URL;
+
+/**
+ * An image location {@link URL} transformer. The implementation of this service
+ * influence the loaded image within {@link ImageDescriptor#createFromURL(URL)}.
+ * 
+ * @since 3.4
+ */
+public interface IImageLocationTransformer {
+
+	/**
+	 * Transforms the given image location {@link URL} and returns the result.
+	 * 
+	 * @param url
+	 *            Image's location {@link URL}.
+	 * @return Transformed image location {@link URL}.
+	 */
+	public URL transform(URL url);
+
+}