| /******************************************************************************* |
| * Copyright (c) 2007, 2008 Oracle. 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: |
| * Oracle - initial API and implementation |
| ******************************************************************************/ |
| package org.eclipse.jpt.core.resource.common; |
| |
| import java.io.IOException; |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.resources.IProject; |
| import org.eclipse.jdt.core.ElementChangedEvent; |
| import org.eclipse.jpt.core.JptCorePlugin; |
| import org.eclipse.jpt.core.ResourceModelListener; |
| import org.eclipse.jpt.core.internal.AbstractResourceModel; |
| import org.eclipse.wst.common.internal.emfworkbench.integration.EditModelEvent; |
| import org.eclipse.wst.common.internal.emfworkbench.integration.EditModelListener; |
| |
| /** |
| * |
| * |
| * Provisional API: This interface is part of an interim API that is still |
| * under development and expected to change significantly before reaching |
| * stability. It is available at this early stage to solicit feedback from |
| * pioneering adopters on the understanding that any code that uses this API |
| * will almost certainly be broken (repeatedly) as the API evolves. |
| */ |
| public abstract class JpaXmlResourceModel extends AbstractResourceModel |
| { |
| protected JpaArtifactEdit artifactEdit; |
| |
| protected JpaXmlResource resource; |
| |
| |
| protected JpaXmlResourceModel(IFile file) { |
| super(file); |
| this.artifactEdit = buildArtifactEdit(file.getProject()); |
| this.resource = this.artifactEdit.getResource(file); |
| this.resource.setResourceModel(this); |
| this.artifactEdit.addListener(buildReloadListener(this.resource)); |
| } |
| |
| |
| protected abstract JpaArtifactEdit buildArtifactEdit(IProject project); |
| |
| private EditModelListener buildReloadListener(JpaXmlResource resource) { |
| return new ReloadListener(resource); |
| } |
| |
| @Override |
| public JpaXmlResource getResource() { |
| return this.resource; |
| } |
| |
| public void javaElementChanged(ElementChangedEvent event) { |
| getResource().javaElementChanged(event); |
| } |
| |
| public void addResourceModelChangeListener(ResourceModelListener listener) { |
| getResource().addResourceModelChangeListener(listener); |
| } |
| |
| public void removeResourceModelChangeListener(ResourceModelListener listener) { |
| getResource().removeResourceModelChangeListener(listener); |
| } |
| |
| @Override |
| public void dispose() { |
| super.dispose(); |
| this.artifactEdit.dispose(); |
| } |
| |
| public void resolveTypes() { |
| //nothing to do here, JavaResourceModel needs this |
| } |
| |
| private class ReloadListener implements EditModelListener |
| { |
| final JpaXmlResource resource; |
| |
| |
| ReloadListener(JpaXmlResource resource) { |
| super(); |
| this.resource = resource; |
| } |
| |
| |
| public void editModelChanged(EditModelEvent anEvent) { |
| switch (anEvent.getEventCode()) { |
| case EditModelEvent.UNLOADED_RESOURCE : |
| if (anEvent.getChangedResources().contains(resource) |
| && ! resource.isLoaded()) { |
| try { |
| resource.load(resource.getResourceSet().getLoadOptions()); |
| } |
| catch (IOException ioe) { |
| JptCorePlugin.log(ioe); |
| } |
| } |
| break; |
| case EditModelEvent.REMOVED_RESOURCE : |
| if (anEvent.getChangedResources().contains(resource)) { |
| anEvent.getEditModel().removeListener(this); |
| } |
| break; |
| // case EditModelEvent.SAVE : |
| // case EditModelEvent.PRE_DISPOSE : |
| } |
| |
| } |
| } |
| } |