| /******************************************************************************* |
| * 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.e4.ui.internal.workbench; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IConfigurationElement; |
| import org.eclipse.core.runtime.IExtensionRegistry; |
| import org.eclipse.core.runtime.InvalidRegistryObjectException; |
| import org.eclipse.e4.core.contexts.ContextInjectionFactory; |
| import org.eclipse.e4.core.contexts.IEclipseContext; |
| import org.eclipse.e4.core.di.InjectionException; |
| import org.eclipse.e4.core.services.contributions.IContributionFactory; |
| import org.eclipse.e4.core.services.contributions.IContributionFactorySpi; |
| import org.eclipse.emf.common.util.URI; |
| import org.osgi.framework.Bundle; |
| import org.osgi.service.log.LogService; |
| |
| /** |
| * Create the contribution factory. |
| */ |
| public class ReflectionContributionFactory implements IContributionFactory { |
| |
| private IExtensionRegistry registry; |
| private Map<String, Object> languages; |
| |
| /** |
| * Create a reflection factory. |
| * |
| * @param registry |
| * to read languages. |
| */ |
| public ReflectionContributionFactory(IExtensionRegistry registry) { |
| this.registry = registry; |
| processLanguages(); |
| } |
| |
| public Object create(String uriString, IEclipseContext context, IEclipseContext staticContext) { |
| return doCreate(uriString, context, staticContext); |
| } |
| |
| public Object create(String uriString, IEclipseContext context) { |
| return doCreate(uriString, context, null); |
| } |
| |
| private Object doCreate(String uriString, IEclipseContext context, IEclipseContext staticContext) { |
| if (uriString == null) { |
| return null; |
| } |
| URI uri = URI.createURI(uriString); |
| Bundle bundle = getBundle(uri); |
| Object contribution; |
| if (bundle != null) { |
| contribution = createFromBundle(bundle, context, staticContext, uri); |
| } else { |
| contribution = null; |
| Activator.log(LogService.LOG_ERROR, "Unable to retrive the bundle from the URI: " //$NON-NLS-1$ |
| + uriString); |
| } |
| return contribution; |
| } |
| |
| protected Object createFromBundle(Bundle bundle, IEclipseContext context, |
| IEclipseContext staticContext, URI uri) { |
| Object contribution; |
| if (uri.segmentCount() > 1) { |
| String prefix = uri.segment(0); |
| IContributionFactorySpi factory = (IContributionFactorySpi) languages.get(prefix); |
| StringBuffer resource = new StringBuffer(uri.segment(1)); |
| for (int i = 2; i < uri.segmentCount(); i++) { |
| resource.append('/'); |
| resource.append(uri.segment(i)); |
| } |
| contribution = factory.create(bundle, resource.toString(), context); |
| } else { |
| String clazz = uri.segment(0); |
| try { |
| Class<?> targetClass = bundle.loadClass(clazz); |
| if (staticContext == null) |
| contribution = ContextInjectionFactory.make(targetClass, context); |
| else |
| contribution = ContextInjectionFactory |
| .make(targetClass, context, staticContext); |
| |
| if (contribution == null) { |
| String message = "Unable to load class '" + clazz + "' from bundle '" //$NON-NLS-1$ //$NON-NLS-2$ |
| + bundle.getBundleId() + "'"; //$NON-NLS-1$ |
| Activator.log(LogService.LOG_ERROR, message, new Exception()); |
| } |
| } catch (ClassNotFoundException e) { |
| contribution = null; |
| String message = "Unable to load class '" + clazz + "' from bundle '" //$NON-NLS-1$ //$NON-NLS-2$ |
| + bundle.getBundleId() + "'"; //$NON-NLS-1$ |
| Activator.log(LogService.LOG_ERROR, message, e); |
| } catch (InjectionException e) { |
| contribution = null; |
| String message = "Unable to create class '" + clazz + "' from bundle '" //$NON-NLS-1$ //$NON-NLS-2$ |
| + bundle.getBundleId() + "'"; //$NON-NLS-1$ |
| Activator.log(LogService.LOG_ERROR, message, e); |
| } |
| } |
| return contribution; |
| } |
| |
| protected void processLanguages() { |
| languages = new HashMap<String, Object>(); |
| String extId = "org.eclipse.e4.languages"; //$NON-NLS-1$ |
| IConfigurationElement[] languageElements = registry.getConfigurationElementsFor(extId); |
| for (int i = 0; i < languageElements.length; i++) { |
| IConfigurationElement languageElement = languageElements[i]; |
| try { |
| languages.put(languageElement.getAttribute("name"), //$NON-NLS-1$ |
| languageElement.createExecutableExtension("contributionFactory")); //$NON-NLS-1$ |
| } catch (InvalidRegistryObjectException e) { |
| // TODO Auto-generated catch block |
| e.printStackTrace(); |
| } catch (CoreException e) { |
| // TODO Auto-generated catch block |
| e.printStackTrace(); |
| } |
| } |
| } |
| |
| protected Bundle getBundle(URI platformURI) { |
| return Activator.getDefault().getBundleForName(platformURI.authority()); |
| } |
| |
| public Bundle getBundle(String uriString) { |
| URI uri = URI.createURI(uriString); |
| return getBundle(uri); |
| } |
| |
| } |