| /******************************************************************************* |
| * Copyright (c) 2007, 2018 Borland Software Corporation and others. |
| * |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v2.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v20.html |
| * |
| * Contributors: |
| * Borland Software Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.m2m.internal.qvt.oml.common.ui; |
| |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import java.util.HashMap; |
| |
| import org.eclipse.jface.resource.ImageDescriptor; |
| import org.eclipse.jface.resource.ImageRegistry; |
| import org.eclipse.m2m.internal.qvt.oml.emf.util.Logger; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.swt.widgets.Display; |
| |
| |
| public abstract class PluginImages { |
| protected PluginImages(URL baseUrl) { |
| myBaseUrl = baseUrl; |
| |
| myImageRegistry = new ImageRegistry(getStandardDisplay()); |
| myImageDescriptors = new HashMap<String, ImageDescriptor>(); |
| |
| myMissingImageDescriptor = ImageDescriptor.getMissingImageDescriptor(); |
| myMissingImage = null; |
| |
| declareImages(); |
| } |
| |
| protected abstract void declareImages(); |
| |
| public Image getImage(String key) { |
| Image image = myImageRegistry.get(key); |
| if(image == null) { |
| image = getMissingImage(); |
| } |
| |
| return image; |
| } |
| |
| public ImageDescriptor getImageDescriptor(String key) { |
| ImageDescriptor desc = (ImageDescriptor)myImageDescriptors.get(key); |
| if(desc == null) { |
| desc = myMissingImageDescriptor; |
| } |
| |
| return desc; |
| } |
| |
| private Image getMissingImage() { |
| if(myMissingImage == null) { |
| myMissingImage = myMissingImageDescriptor.createImage(); |
| } |
| |
| return myMissingImage; |
| } |
| |
| protected void declareRegistryImage(String key, String path) { |
| ImageDescriptor desc; |
| try { |
| desc = ImageDescriptor.createFromURL(makeURL(path)); |
| } |
| catch (MalformedURLException e) { |
| Logger.getLogger().log(Logger.SEVERE, "Failed to load " + path, e); //$NON-NLS-1$ |
| desc = myMissingImageDescriptor; |
| } |
| |
| declareImage(key, desc); |
| } |
| |
| public void declareImage(String key, ImageDescriptor desc) { |
| myImageRegistry.put(key, desc); |
| myImageDescriptors.put(key, desc); |
| } |
| |
| private URL makeURL(String path) throws MalformedURLException { |
| URL url = new URL(myBaseUrl, path); |
| return url; |
| } |
| |
| public static Display getStandardDisplay() { |
| Display display = Display.getCurrent(); |
| if (display == null) { |
| display = Display.getDefault(); |
| } |
| |
| return display; |
| } |
| |
| private final URL myBaseUrl; |
| private final ImageRegistry myImageRegistry; |
| private final HashMap<String, ImageDescriptor> myImageDescriptors; |
| |
| private final ImageDescriptor myMissingImageDescriptor; |
| private Image myMissingImage; |
| } |