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/*******************************************************************************
* Copyright (c) 2009 itemis AG (http://www.itemis.eu) 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
*******************************************************************************/
package org.eclipse.papyrus.infra.gmfdiag.xtext.glue.concurrency;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.gmf.runtime.diagram.ui.parts.DiagramEditor;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IEditorReference;
import org.eclipse.ui.IPartListener;
import org.eclipse.ui.IStartup;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.PlatformUI;
/**
* Detects concurrent modifications of GMF and Xtext editors based on Xtext's dirty state management.
*
* @author koehnlein
*/
public class ConcurrentModificationObserver implements IPartListener {
private EditingDomainAdapter.Factory factory;
/**
* This element comes from the XText/GMF integration example, and was not originally documented.
* @param activePage
*/
public ConcurrentModificationObserver(IWorkbenchPage activePage) {
factory = new EditingDomainAdapter.Factory();
for (IEditorReference editorRef : activePage.getEditorReferences()) {
IEditorPart editor = editorRef.getEditor(false);
if (editor != null) {
partOpened(editor);
}
}
}
public void partOpened(IWorkbenchPart part) {
if (part instanceof DiagramEditor) {
TransactionalEditingDomain editingDomain = ((DiagramEditor) part).getEditingDomain();
factory.adapt(editingDomain, EditingDomainAdapter.class);
}
}
public void partClosed(IWorkbenchPart part) {
if (part instanceof DiagramEditor) {
// as long as bug 299920 is not fixed, we have to dispose the adapter manually
TransactionalEditingDomain editingDomain = ((DiagramEditor) part).getEditingDomain();
if (editingDomain != null) {
EditingDomainAdapter adapter = (EditingDomainAdapter) factory.adapt(editingDomain,
EditingDomainAdapter.class);
if (adapter != null) {
adapter.dispose();
}
}
}
}
public void partActivated(IWorkbenchPart part) {
// do nothing
}
public void partDeactivated(IWorkbenchPart part) {
// do nothing
}
public void partBroughtToTop(IWorkbenchPart part) {
// do nothing
}
/**
* This element comes from the XText/GMF integration example, and was not originally documented.
*/
public static class Initializer implements IStartup {
public void earlyStartup() {
Display.getDefault().asyncExec(new Runnable() {
public void run() {
IWorkbenchPage activePage = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
activePage.addPartListener(new ConcurrentModificationObserver(activePage));
}
});
}
}
}
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