| /********************************************************************* |
| * Copyright (c) 2008 The University of York. |
| * |
| * This program and the accompanying materials are made |
| * available under the terms of the Eclipse Public License 2.0 |
| * which is available at https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| **********************************************************************/ |
| package org.eclipse.epsilon.common.dt; |
| |
| import java.net.URL; |
| import java.util.HashMap; |
| |
| import org.eclipse.core.runtime.FileLocator; |
| import org.eclipse.core.runtime.Path; |
| import org.eclipse.epsilon.common.dt.util.LogUtil; |
| import org.eclipse.jface.resource.ImageDescriptor; |
| import org.eclipse.jface.resource.ImageRegistry; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.ui.plugin.AbstractUIPlugin; |
| import org.osgi.framework.BundleContext; |
| |
| public abstract class AbstractEpsilonUIPlugin extends AbstractUIPlugin implements EpsilonPlugin { |
| |
| protected static HashMap<Class<?>, AbstractEpsilonUIPlugin> plugins = new HashMap<>(); |
| protected ImageRegistry imageDescriptorRegistry; |
| |
| @Override |
| public void start(BundleContext context) throws Exception { |
| super.start(context); |
| plugins.put(this.getClass(), this); |
| } |
| |
| @Override |
| public void stop(BundleContext context) throws Exception { |
| super.stop(context); |
| plugins.remove(this.getClass()); |
| if (imageDescriptorRegistry != null) imageDescriptorRegistry.dispose(); |
| } |
| |
| protected ImageRegistry getImageDescriptorRegistry() { |
| if (imageDescriptorRegistry == null) { |
| imageDescriptorRegistry = createImageRegistry(); |
| } |
| return imageDescriptorRegistry; |
| } |
| |
| public ImageDescriptor getImageDescriptor(String path) { |
| |
| ImageDescriptor imageDescriptor = getImageDescriptorRegistry().getDescriptor(path); |
| |
| if (imageDescriptor == null) { |
| URL url = FileLocator.find(getBundle(), new Path(path), new HashMap<String, String>()); |
| if (url != null) { |
| imageDescriptor = ImageDescriptor.createFromURL(url); |
| if (imageDescriptor != null) getImageDescriptorRegistry().put(path, imageDescriptor); |
| } |
| } |
| |
| return imageDescriptor; |
| } |
| |
| @Override |
| public Image createImage(String path) { |
| |
| Image image = getImageRegistry().get(path); |
| |
| if (image == null) { |
| try { |
| ImageDescriptor imageDescriptor = getImageDescriptor(path); |
| if (imageDescriptor != null) { |
| image = getImageDescriptor(path).createImage(); |
| if (image != null) { getImageRegistry().put(path, image); } |
| } |
| } |
| catch(Exception e) { LogUtil.log(e); } |
| } |
| |
| return image; |
| } |
| |
| } |