| /******************************************************************************* |
| * Copyright (c) 2005, 2009 committers of openArchitectureWare 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: |
| * committers of openArchitectureWare - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.xtend.typesystem.uml2.ui; |
| |
| import java.io.IOException; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.resources.IResourceChangeEvent; |
| import org.eclipse.core.resources.IResourceChangeListener; |
| import org.eclipse.core.resources.IResourceDelta; |
| import org.eclipse.core.resources.IResourceDeltaVisitor; |
| import org.eclipse.core.resources.IResourceVisitor; |
| import org.eclipse.core.resources.IWorkspace; |
| import org.eclipse.core.resources.ResourcesPlugin; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.emf.common.util.URI; |
| import org.eclipse.emf.ecore.EObject; |
| import org.eclipse.emf.ecore.resource.Resource; |
| import org.eclipse.emf.ecore.resource.ResourceSet; |
| import org.eclipse.emf.ecore.resource.URIConverter; |
| import org.eclipse.emf.ecore.resource.impl.ResourceSetImpl; |
| import org.eclipse.jdt.core.JavaCore; |
| import org.eclipse.jface.resource.ImageDescriptor; |
| import org.eclipse.ui.plugin.AbstractUIPlugin; |
| import org.eclipse.uml2.uml.Profile; |
| import org.eclipse.uml2.uml.resource.UML22UMLResource; |
| import org.osgi.framework.BundleContext; |
| |
| /** |
| * The main plug-in class to be used in the desktop. |
| * |
| * TODO plug-in and profiles initialization should be separated into different classes... but this would be a larger refactoring |
| */ |
| public class Uml2AdapterPlugin extends AbstractUIPlugin { |
| // A resource set to store the loaded profiles in |
| private static ResourceSet profilesResourceSet; |
| |
| // for guarding resource initialization |
| private static final AtomicBoolean initializingResources = new AtomicBoolean(false); |
| |
| /** |
| * This is a trick to ensure that there are no deadlocks and initialization issues |
| * when a) this plug-in is started and b) other plug-ins access the {@link #profilesResourceSet} |
| * and/or c) there are changes in the workspace. |
| */ |
| private static class FieldInitializer { |
| static final ResourceSet profilesResourceSet; |
| |
| static final Map<IResource, Profile> fileModels; |
| |
| static { |
| profilesResourceSet = new ResourceSetImpl(); |
| fileModels = new HashMap<IResource, Profile>(); |
| |
| try { |
| IWorkspace workspace = ResourcesPlugin.getWorkspace(); |
| workspace.getRoot().accept( |
| new Uml2AdapterPlugin.ProfileResourceDeltaVisitor(profilesResourceSet, fileModels)); |
| } |
| catch (CoreException e) { |
| Uml2AdapterLog.logError(e); |
| } |
| } |
| } |
| |
| // guard initialization |
| public static ResourceSet getProfilesResourceSet() { |
| if (profilesResourceSet == null) { |
| try { |
| initializingResources.set(true); |
| profilesResourceSet = FieldInitializer.profilesResourceSet; |
| } finally { |
| initializingResources.set(false); |
| } |
| } |
| return profilesResourceSet; |
| } |
| |
| static class ProfileResourceDeltaVisitor implements IResourceDeltaVisitor, IResourceVisitor { |
| |
| private final ResourceSet profilesResourceSet; |
| |
| private final Map<IResource, Profile> fileModels; |
| |
| public ProfileResourceDeltaVisitor(ResourceSet profilesResourceSet, Map<IResource, Profile> fileModels) { |
| super(); |
| this.profilesResourceSet = profilesResourceSet; |
| this.fileModels = fileModels; |
| } |
| |
| public boolean visit(IResourceDelta delta) { |
| |
| if (delta.getKind() == IResourceDelta.REMOVED) { |
| Uml2AdapterPlugin.removeFileModel(delta.getResource()); |
| return true; |
| } else { |
| IResource resource = delta.getResource(); |
| try { |
| return visit(resource); |
| } catch (CoreException e) { |
| Uml2AdapterLog.logError(e); |
| return true; |
| } |
| } |
| } |
| |
| public boolean visit(IResource resource) throws CoreException { |
| if (resource instanceof IFile) { |
| IFile f = (IFile) resource; |
| if (isValidProfile(f)) { |
| if (JavaCore.create(f.getParent()) != null) { |
| try { |
| URI uri = URI.createURI(f.getFullPath().toString()); |
| Profile p = loadProfile(uri); |
| if (p != null) { |
| fileModels.put(f, p); |
| } |
| } catch (Exception e) { |
| Uml2AdapterLog.logError(e); |
| } |
| } |
| } |
| } |
| return true; |
| } |
| |
| private boolean isValidProfile(IFile f) { |
| return !f.isDerived() && f.isAccessible() && !f.isLinked() && (f.getName().endsWith("profile.uml2") || f.getName().endsWith("profile.uml"))&& f.exists(); |
| } |
| |
| public synchronized final Profile loadProfile(URI uri) { |
| Resource r = profilesResourceSet.getResource(uri, false); |
| if (r == null) { |
| // this resource has not been loaded before... |
| // hence, demandLoad it |
| r = profilesResourceSet.getResource(uri, true); |
| } else { |
| if (r.isLoaded()) { // Is this a request to reload the resource? |
| r.unload(); |
| } |
| try { |
| r.load(new HashMap<Object,Object>()); |
| } catch (IOException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| List<EObject> c = r.getContents(); |
| if (c.isEmpty()) { |
| return null; |
| } |
| if (c.get(0) instanceof Profile) { |
| Profile p = (Profile) c.get(0); |
| URIConverter.URI_MAP.put(URI.createURI(uri.lastSegment()), uri); |
| return p; |
| } |
| return null; |
| } |
| } |
| |
| // TODO should be private |
| static Map<IResource, Profile> fileModels; |
| |
| // guard resource initialization |
| private static Map<IResource, Profile> getFileModelsInternal() { |
| if (fileModels == null) { |
| try { |
| initializingResources.set(true); |
| fileModels = FieldInitializer.fileModels; |
| } |
| finally { |
| initializingResources.set(false); |
| } |
| } |
| return fileModels; |
| } |
| |
| public final static Map<IResource, Profile> getFileModels() { |
| return Collections.unmodifiableMap(getFileModelsInternal()); |
| } |
| |
| public static void removeFileModel(IResource resource) { |
| URI uri = URI.createURI(resource.getFullPath().toString()); |
| Resource r = profilesResourceSet.getResource(uri, false); |
| if (r != null) { |
| if (r.isLoaded()) // Is this a request to reload the resource? |
| r.unload(); |
| } |
| getFileModelsInternal().remove(resource); |
| } |
| |
| // The shared instance. |
| private static Uml2AdapterPlugin plugin; |
| |
| private static IResourceChangeListener listener = new IResourceChangeListener() { |
| public void resourceChanged(IResourceChangeEvent event) { |
| // we are only interested in POST_CHANGE events |
| if (event.getType() != IResourceChangeEvent.POST_CHANGE) |
| return; |
| IResourceDelta rootDelta = event.getDelta(); |
| try { |
| if (!initializingResources.get()) { |
| rootDelta.accept(new Uml2AdapterPlugin.ProfileResourceDeltaVisitor(getProfilesResourceSet(), getFileModelsInternal())); |
| } |
| } catch (CoreException e) { |
| Uml2AdapterLog.logError(e); |
| } |
| |
| } |
| }; |
| |
| protected static List<EObject> loadContents(IFile file) { |
| try { |
| URI uri = URI.createFileURI(file.getFullPath().toString()); |
| Resource r = new ResourceSetImpl().createResource(uri); |
| r.load(file.getContents(), Collections.EMPTY_MAP); |
| return r.getContents(); |
| } catch (Exception e) { |
| Uml2AdapterLog.logError(e); |
| } |
| return null; |
| } |
| |
| /** |
| * The constructor. |
| */ |
| public Uml2AdapterPlugin() { |
| plugin = this; |
| } |
| |
| @Override |
| public void start(BundleContext context) throws Exception { |
| super.start(context); |
| Resource.Factory.Registry.INSTANCE.getExtensionToFactoryMap().put("uml2", UML22UMLResource.Factory.INSTANCE); |
| IWorkspace workspace = ResourcesPlugin.getWorkspace(); |
| workspace.addResourceChangeListener(listener); |
| } |
| |
| @Override |
| public void stop(BundleContext context) throws Exception { |
| super.stop(context); |
| plugin = null; |
| IWorkspace workspace = ResourcesPlugin.getWorkspace(); |
| workspace.removeResourceChangeListener(listener); |
| } |
| |
| /** |
| * Returns the shared instance. |
| */ |
| public static Uml2AdapterPlugin getDefault() { |
| return plugin; |
| } |
| |
| /** |
| * Returns an image descriptor for the image file at the given plug-in |
| * relative path. |
| * |
| * @param path |
| * the path |
| * @return the image descriptor |
| */ |
| public static ImageDescriptor getImageDescriptor(String path) { |
| return AbstractUIPlugin.imageDescriptorFromPlugin(getId(), path); |
| } |
| |
| public static String getId() { |
| return getDefault().getBundle().getSymbolicName(); |
| } |
| |
| } |
