| /******************************************************************************* |
| * Copyright (c) 2005, 2006 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 |
| *******************************************************************************/ |
| /* |
| * Created on Feb 17, 2005 |
| */ |
| package org.eclipse.jst.j2ee.navigator.internal; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| |
| import org.eclipse.core.resources.IProject; |
| 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.ResourcesPlugin; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.jem.util.logger.proxy.Logger; |
| import org.eclipse.swt.SWTError; |
| import org.eclipse.swt.SWTException; |
| |
| public class EMFRootObjectProvider implements IResourceChangeListener, IResourceDeltaVisitor{ |
| private final HashMap emfModelCache = new HashMap(); |
| private final List listeners = new ArrayList(); |
| |
| public interface IRefreshHandlerListener { |
| void onRefresh(Object element); |
| } |
| |
| /** |
| * |
| */ |
| public EMFRootObjectProvider() { |
| super(); |
| ResourcesPlugin.getWorkspace().addResourceChangeListener(this); |
| } |
| |
| public Object[] getModels(IProject project){ |
| try { |
| EMFModelManager modelManager = null; |
| synchronized (emfModelCache) { |
| modelManager = (EMFModelManager) emfModelCache.get(project); |
| if (modelManager == null) { |
| modelManager= EMFModelManagerFactory.createEMFModelManager(project,this) ; |
| emfModelCache.put(project,modelManager); |
| } |
| } |
| return modelManager.getModels(); |
| } catch (Exception ex) { |
| return null; |
| } |
| } |
| |
| public boolean hasLoadedModels(IProject project) { |
| synchronized (emfModelCache) { |
| return emfModelCache.get(project) != null; |
| } |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.core.resources.IResourceChangeListener#resourceChanged(org.eclipse.core.resources.IResourceChangeEvent) |
| */ |
| public void resourceChanged(IResourceChangeEvent event) { |
| final IResourceDelta delta = event.getDelta(); |
| |
| if (delta != null) { |
| try { |
| delta.accept(EMFRootObjectProvider.this); |
| } catch (CoreException e) { |
| Logger.getLogger().logError(e); |
| } catch (SWTException swte) { |
| Logger.getLogger().logError(swte); |
| } catch (SWTError swte) { |
| Logger.getLogger().logError(swte); |
| } |
| } |
| |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.core.resources.IResourceDeltaVisitor#visit(org.eclipse.core.resources.IResourceDelta) |
| */ |
| public boolean visit(IResourceDelta delta) throws CoreException { |
| IResource resource = delta.getResource(); |
| if (resource != null) { |
| switch (resource.getType()) { |
| case IResource.ROOT : |
| return true; |
| case IResource.PROJECT : |
| boolean projectOpenStateChanged = ((delta.getFlags() & IResourceDelta.OPEN) != 0); |
| if (delta.getKind() == IResourceDelta.REMOVED || projectOpenStateChanged) { |
| IProject project = (IProject) resource; |
| dispose(project); |
| } |
| return false; |
| } |
| } |
| return false; |
| } |
| |
| private void dispose(IProject project) { |
| if (project == null) return; |
| EMFModelManager modelManager = (EMFModelManager) emfModelCache.remove(project); |
| if (modelManager != null) { |
| modelManager.dispose(); |
| modelManager = null; |
| } |
| } |
| public void dispose() { |
| ResourcesPlugin.getWorkspace().removeResourceChangeListener(this); |
| EMFModelManager modelManager = null; |
| Object[] keys = emfModelCache.keySet().toArray(); |
| for (int i = 0; i < keys.length; i++) { |
| modelManager = (EMFModelManager) emfModelCache.remove(keys[i]); |
| if (modelManager != null) { |
| modelManager.dispose(); |
| } |
| } |
| } |
| |
| |
| /** |
| * @param aProject |
| */ |
| public void notifyListeners(IProject aProject) { |
| for (int x = 0; x < listeners.size(); ++x) { |
| IRefreshHandlerListener refreshHandler = (IRefreshHandlerListener) listeners.get(x); |
| refreshHandler.onRefresh(aProject); |
| } |
| |
| } |
| |
| public void addRefreshHandlerListener(IRefreshHandlerListener aListener) { |
| synchronized (getListeners()) { |
| if (aListener != null && !getListeners().contains(aListener)) |
| getListeners().add(aListener); |
| } |
| } |
| |
| public void removeRefreshHandlerListener(IRefreshHandlerListener aListener) { |
| synchronized (listeners) { |
| listeners.remove(aListener); |
| } |
| } |
| |
| /** |
| * Insert the method's description here. Creation date: (4/11/2001 4:42:58 PM) |
| * |
| * @return java.util.List |
| */ |
| protected java.util.List getListeners() { |
| return listeners; |
| } |
| |
| |
| } |