| /*********************************************************************** |
| * Copyright (c) 2008 by SAP AG, Walldorf. |
| * 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: |
| * SAP AG - initial API and implementation |
| ***********************************************************************/ |
| package org.eclipse.jst.jee.ui.internal.navigator; |
| |
| import java.util.HashMap; |
| |
| import org.eclipse.core.resources.IProject; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.core.runtime.jobs.ISchedulingRule; |
| import org.eclipse.core.runtime.jobs.Job; |
| import org.eclipse.jface.viewers.AbstractTreeViewer; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.jface.viewers.ITreeContentProvider; |
| import org.eclipse.jface.viewers.StructuredViewer; |
| import org.eclipse.jface.viewers.TreeViewer; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.jst.j2ee.model.IModelProvider; |
| import org.eclipse.jst.j2ee.model.IModelProviderEvent; |
| import org.eclipse.jst.j2ee.model.IModelProviderListener; |
| import org.eclipse.jst.j2ee.model.ModelProviderManager; |
| import org.eclipse.jst.j2ee.navigator.internal.EMFRootObjectProvider.IRefreshHandlerListener; |
| import org.eclipse.jst.jee.ui.plugin.JEEUIPlugin; |
| import org.eclipse.swt.widgets.Display; |
| import org.eclipse.ui.progress.UIJob; |
| |
| public abstract class JEE5ContentProvider implements ITreeContentProvider, IRefreshHandlerListener, IModelProviderListener { |
| |
| protected Viewer viewer; |
| protected static final Class IPROJECT_CLASS = IProject.class; |
| |
| protected static HashMap<IProject, IModelProvider> groupProvidersMap = new HashMap<IProject, IModelProvider>(); |
| |
| |
| public void inputChanged(Viewer aViewer, Object anOldInput, Object aNewInput) { |
| viewer = aViewer; |
| } |
| |
| |
| protected IModelProvider getCachedModelProvider(IProject project) { |
| IModelProvider provider = groupProvidersMap.get(project); |
| if (provider != null){ |
| Object mObj = provider.getModelObject(); |
| } else{ |
| provider = ModelProviderManager.getModelProvider(project); |
| provider.addListener(this); |
| groupProvidersMap.put(project,provider); |
| } |
| return provider; |
| } |
| |
| public void projectChanged(final IProject project) { |
| try { |
| Runnable refreshThread = new Runnable() { |
| public void run() { |
| if (viewer != null) { |
| ISelection sel = ((TreeViewer) viewer).getSelection(); |
| ITreeContentProvider contentProvider = ((ITreeContentProvider) ((TreeViewer) viewer) |
| .getContentProvider()); |
| contentProvider.getChildren(project); |
| ((StructuredViewer) viewer).refresh(project); |
| ((TreeViewer) viewer).setSelection(sel); |
| } |
| } |
| }; |
| Display.getDefault().asyncExec(refreshThread); |
| } catch (Exception e) |
| { |
| JEEUIPlugin.logError("Error during refresh", e); //$NON-NLS-1$ |
| } |
| } |
| |
| public void modelsChanged(IModelProviderEvent event) { |
| projectChanged(event.getProject()); |
| } |
| |
| public void onRefresh(final Object element) { |
| if (viewer instanceof AbstractTreeViewer) { |
| if (Display.getCurrent() != null) { |
| ((AbstractTreeViewer) viewer).refresh(element, true); |
| } else { |
| /* Create and schedule a UI Job to update the Navigator Content Viewer */ |
| Job job = new UIJob("Update the Navigator Content Viewer Job") { //$NON-NLS-1$ |
| public IStatus runInUIThread(IProgressMonitor monitor) { |
| ((AbstractTreeViewer) viewer).refresh(element, true); |
| return Status.OK_STATUS; |
| } |
| }; |
| ISchedulingRule rule = new ISchedulingRule() { |
| public boolean contains(ISchedulingRule rule) { |
| return rule == this; |
| } |
| public boolean isConflicting(ISchedulingRule rule) { |
| return rule == this; |
| } |
| }; |
| if (rule != null) { |
| job.setRule(rule); |
| } |
| job.schedule(); |
| } |
| } |
| } |
| |
| public void dispose() { |
| groupProvidersMap.clear(); |
| } |
| } |