| /******************************************************************************* |
| * Copyright (c) 2010 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.wst.jsdt.debug.internal.rhino.ui; |
| |
| import java.net.URL; |
| |
| import org.eclipse.core.runtime.FileLocator; |
| import org.eclipse.core.runtime.Path; |
| import org.eclipse.core.runtime.Platform; |
| import org.eclipse.jface.resource.ImageDescriptor; |
| import org.eclipse.jface.resource.ImageRegistry; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.ui.PlatformUI; |
| import org.osgi.framework.Bundle; |
| |
| /** |
| * Image registry for shared images used in JavaScript Debug UI |
| * |
| * @since 1.0 |
| */ |
| public final class RhinoImageRegistry { |
| |
| /** |
| * The image registry containing <code>Image</code>s and <code>ImageDescriptor</code>s. |
| */ |
| private static ImageRegistry imageRegistry; |
| private static ImageDescriptorRegistry descRegistry; |
| |
| private static String ICONS_PATH = "$nl$/icons/"; //$NON-NLS-1$ |
| |
| /** |
| * Icon paths |
| */ |
| final static String ELCL = ICONS_PATH + "elcl16/"; //enabled - size 16x16 //$NON-NLS-1$ |
| final static String OVR = ICONS_PATH + "ovr16/"; //overlays //$NON-NLS-1$ |
| final static String DLCL = ICONS_PATH + "dlcl16/"; //disabled icons //$NON-NLS-1$ |
| |
| /** |
| * Declare all images |
| */ |
| private static void declareImages() { |
| //ELCL |
| declareRegistryImage(ISharedImages.IMG_SCRIPT, ELCL + "script.gif"); //$NON-NLS-1$ |
| declareRegistryImage(ISharedImages.IMG_RHINO, ELCL + "rhino.gif"); //$NON-NLS-1$ |
| declareRegistryImage(ISharedImages.IMG_MAIN_TAB, ELCL + "main_tab.gif"); //$NON-NLS-1$ |
| declareRegistryImage(ISharedImages.IMG_LIBRARY, ELCL + "library.gif"); //$NON-NLS-1$ |
| } |
| |
| /** |
| * Declare an Image in the registry table. |
| * @param key The key to use when registering the image |
| * @param path The path where the image can be found. This path is relative to where |
| * this plugin class is found (i.e. typically the packages directory) |
| */ |
| private final static void declareRegistryImage(String key, String path) { |
| ImageDescriptor desc = ImageDescriptor.getMissingImageDescriptor(); |
| Bundle bundle = Platform.getBundle(RhinoUIPlugin.PLUGIN_ID); |
| URL url = null; |
| if (bundle != null){ |
| url = FileLocator.find(bundle, new Path(path), null); |
| if(url != null) { |
| desc = ImageDescriptor.createFromURL(url); |
| } |
| } |
| imageRegistry.put(key, desc); |
| } |
| |
| /** |
| * Returns the shared image for the given key or <code>null</code>. |
| * @param key |
| * @return the requested image or <code>null</code> if the image does not exist |
| */ |
| public static Image getSharedImage(String key) { |
| if (imageRegistry == null) { |
| initializeImageRegistry(); |
| } |
| return imageRegistry.get(key); |
| } |
| |
| /** |
| * Initializes the registry if it has not been already |
| * @return the initialized registry |
| */ |
| private synchronized static ImageRegistry initializeImageRegistry() { |
| if (imageRegistry == null) { |
| imageRegistry = new ImageRegistry(PlatformUI.getWorkbench().getDisplay()); |
| declareImages(); |
| } |
| return imageRegistry; |
| } |
| |
| /** |
| * Creates the image from the descriptor and caches it for proper disposal |
| * @param descriptor |
| * @return |
| */ |
| public static Image getImage(ImageDescriptor descriptor) { |
| if(descRegistry == null) { |
| descRegistry = new ImageDescriptorRegistry(); |
| } |
| return descRegistry.get(descriptor); |
| } |
| |
| /** |
| * Disposes the image registry |
| */ |
| public static void dispose() { |
| if(imageRegistry != null) { |
| imageRegistry.dispose(); |
| } |
| if(descRegistry != null) { |
| descRegistry.dispose(); |
| } |
| } |
| |
| /** |
| * Constructor |
| */ |
| private RhinoImageRegistry() { |
| // no direct instantiation |
| } |
| } |