| /******************************************************************************* |
| * Copyright (c) 2004, 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.ui.internal.activities.ws; |
| |
| import org.eclipse.core.runtime.IConfigurationElement; |
| import org.eclipse.core.runtime.IExtension; |
| import org.eclipse.core.runtime.IExtensionPoint; |
| import org.eclipse.core.runtime.Platform; |
| import org.eclipse.core.runtime.dynamichelpers.IExtensionChangeHandler; |
| import org.eclipse.core.runtime.dynamichelpers.IExtensionTracker; |
| import org.eclipse.jface.resource.ImageDescriptor; |
| import org.eclipse.jface.resource.ImageRegistry; |
| import org.eclipse.ui.PlatformUI; |
| import org.eclipse.ui.internal.activities.Persistence; |
| import org.eclipse.ui.internal.registry.IWorkbenchRegistryConstants; |
| import org.eclipse.ui.plugin.AbstractUIPlugin; |
| |
| /** |
| * @since 3.1 |
| */ |
| public class ImageBindingRegistry implements IExtensionChangeHandler { |
| private String tag; |
| private ImageRegistry registry = new ImageRegistry(); |
| |
| /** |
| * @param tag |
| * |
| */ |
| public ImageBindingRegistry(String tag) { |
| super(); |
| this.tag = tag; |
| IExtension [] extensions = getExtensionPointFilter().getExtensions(); |
| for (int i = 0; i < extensions.length; i++) { |
| addExtension(PlatformUI.getWorkbench().getExtensionTracker(), extensions[i]); |
| } |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.core.runtime.dynamicHelpers.IExtensionChangeHandler#addExtension(org.eclipse.core.runtime.dynamicHelpers.IExtensionTracker, org.eclipse.core.runtime.IExtension) |
| */ |
| public void addExtension(IExtensionTracker tracker, IExtension extension) { |
| IConfigurationElement [] elements = extension.getConfigurationElements(); |
| for (int i = 0; i < elements.length; i++) { |
| IConfigurationElement element = elements[i]; |
| if (element.getName().equals(tag)) { |
| String id = element.getAttribute(IWorkbenchRegistryConstants.ATT_ID); |
| String file = element.getAttribute(IWorkbenchRegistryConstants.ATT_ICON); |
| if (file == null || id == null) { |
| Persistence.log(element, Persistence.ACTIVITY_IMAGE_BINDING_DESC, "definition must contain icon and ID"); //$NON-NLS-1$ |
| continue; //ignore - malformed |
| } |
| if (registry.getDescriptor(id) == null) { // first come, first serve |
| ImageDescriptor descriptor = AbstractUIPlugin.imageDescriptorFromPlugin(element.getNamespace(), file); |
| if (descriptor != null) { |
| registry.put(id, descriptor); |
| tracker.registerObject(extension, id, IExtensionTracker.REF_WEAK); |
| } |
| } |
| } |
| } |
| |
| } |
| |
| /** |
| * Return the activity support extension point that this registry is interested in. |
| * |
| * @return the extension point |
| */ |
| public IExtensionPoint getExtensionPointFilter() { |
| return Platform.getExtensionRegistry().getExtensionPoint( |
| PlatformUI.PLUGIN_ID, IWorkbenchRegistryConstants.PL_ACTIVITYSUPPORT); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.core.runtime.dynamicHelpers.IExtensionChangeHandler#removeExtension(org.eclipse.core.runtime.IExtension, java.lang.Object[]) |
| */ |
| public void removeExtension(IExtension extension, Object[] objects) { |
| for (int i = 0; i < objects.length; i++) { |
| if (objects[i] instanceof String) { |
| registry.remove((String) objects[i]); |
| } |
| } |
| } |
| |
| /** |
| * Get the ImageDescriptor for the given id. |
| * |
| * @param id the id |
| * @return the descriptor |
| */ |
| public ImageDescriptor getImageDescriptor(String id) { |
| return registry.getDescriptor(id); |
| } |
| |
| /** |
| * Dispose of this registry. |
| */ |
| void dispose() { |
| registry.dispose(); |
| } |
| |
| } |