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/*
* Copyright (c) 2011-2013 Eike Stepper (Berlin, Germany) 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:
* Martin Fluegge - initial API and implementation
* Christian W. Damus (CEA) - bug 399285 support IDawnEditor adapters
*/
package org.eclipse.emf.cdo.dawn.gmf.notifications.impl;
import static org.eclipse.emf.cdo.dawn.gmf.editors.impl.DawnGMFEditorSupport.getDiagramEditor;
import org.eclipse.emf.cdo.CDOObject;
import org.eclipse.emf.cdo.common.revision.delta.CDOFeatureDelta;
import org.eclipse.emf.cdo.dawn.editors.IDawnEditor;
import org.eclipse.emf.cdo.dawn.gmf.synchronize.DawnConflictHelper;
import org.eclipse.emf.cdo.dawn.gmf.util.DawnDiagramUpdater;
import org.eclipse.emf.cdo.dawn.notifications.BasicDawnTransactionHandler;
import org.eclipse.emf.cdo.internal.dawn.bundle.OM;
import org.eclipse.emf.cdo.transaction.CDOTransaction;
import org.eclipse.emf.cdo.transaction.CDOTransactionConflictEvent;
import org.eclipse.emf.cdo.util.CDOUtil;
import org.eclipse.emf.cdo.util.InvalidObjectException;
import org.eclipse.emf.cdo.view.CDOViewInvalidationEvent;
import org.eclipse.net4j.util.om.trace.ContextTracer;
import org.eclipse.emf.common.notify.Adapter;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.notify.Notifier;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.edit.domain.EditingDomain;
import org.eclipse.emf.edit.domain.IEditingDomainProvider;
import org.eclipse.emf.transaction.RecordingCommand;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.gef.EditPart;
import org.eclipse.gmf.runtime.diagram.ui.editparts.IGraphicalEditPart;
import org.eclipse.gmf.runtime.diagram.ui.resources.editor.parts.DiagramDocumentEditor;
import org.eclipse.gmf.runtime.notation.Edge;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.swt.widgets.Display;
/**
* @author Martin Fluegge
*/
public class DawnGMFHandler extends BasicDawnTransactionHandler
{
private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG, DawnGMFHandler.class);
/**
* @since 1.0
*/
public DawnGMFHandler(IDawnEditor editor)
{
super(editor);
}
/**
* @since 1.0
*/
@Override
public void handleViewInvalidationEvent(CDOViewInvalidationEvent event)
{
CDOViewInvalidationEvent e = event;
if (TRACER.isEnabled())
{
TRACER.format("Detached Objects {0} ", e.getDetachedObjects()); //$NON-NLS-1$
TRACER.format("Dirty Objects {0} ", e.getDirtyObjects()); //$NON-NLS-1$
}
adjustDeletedEdges(e);
for (CDOObject dirtyObject : e.getDirtyObjects())
{
handleObject(dirtyObject);
}
for (CDOObject detachedObject : e.getDetachedObjects())
{
handleObject(detachedObject);
}
}
/**
* @since 1.0
*/
@Override
public void handleTransactionConflictEvent(CDOTransactionConflictEvent event)
{
CDOTransactionConflictEvent cdoTransactionConflictEvent = event;
CDOObject cdoObject = cdoTransactionConflictEvent.getConflictingObject();
EObject element = CDOUtil.getEObject(cdoObject); // either semantic object or notational
View view = DawnDiagramUpdater.findView(element);
if (DawnConflictHelper.isConflicted(cdoObject))
{
DawnConflictHelper.handleConflictedView(cdoObject, view, getDiagramEditor(editor));
return;
}
}
@Override
public void modifyingObject(CDOTransaction transaction, final CDOObject object, CDOFeatureDelta featureDelta)
{
if (TRACER.isEnabled())
{
TRACER.format("modifyingObject {0}", object); //$NON-NLS-1$
}
refresh(object);
editor.setDirty();
object.eAdapters().add(new Adapter()
{
public void setTarget(Notifier newTarget)
{
}
public void notifyChanged(Notification notification)
{
DiagramDocumentEditor diagramEditor = getDiagramEditor(editor);
DawnDiagramUpdater.refreshEditPart(diagramEditor.getDiagramEditPart(), diagramEditor);
object.eAdapters().remove(this);
}
public boolean isAdapterForType(Object type)
{
return false;
}
public Notifier getTarget()
{
return null;
}
});
}
/**
* @since 1.0
*/
@Override
public void attachingObject(CDOTransaction transaction, CDOObject object)
{
super.attachingObject(transaction, object);
refresh(object);
}
/**
* Edges must be adjusted because of the transience of the Node source/targetEdges CDO cannot see this because
* removing an edges just removes the edge from the diagram. CDO just notices the change in the diagram but not in the
* (detached) edge. The other site (node) is transient and will not be part of the notification. So I must adjust this
* later. CDOLEgacy Wrapper breakes because it only adjusts the changes in the diagram and not the removed edge. So I
* cannot adjust this in the Wrapper. Maybe there is another more generic way.
*/
public void adjustDeletedEdges(final CDOViewInvalidationEvent e)
{
Display.getDefault().asyncExec(new Runnable()
{
public void run()
{
for (CDOObject obj : e.getDetachedObjects())
{
final EObject view = CDOUtil.getEObject(obj);
if (view instanceof Edge)
{
EditingDomain editingDomain = ((IEditingDomainProvider)view.eResource().getResourceSet())
.getEditingDomain();
editingDomain.getCommandStack().execute(new RecordingCommand((TransactionalEditingDomain)editingDomain)
{
@Override
protected void doExecute()
{
try
{
((Edge)view).setTarget(null);
}
catch (InvalidObjectException ignore)
{
}
try
{
((Edge)view).setSource(null);
}
catch (InvalidObjectException ignore)
{
}
}
});
}
}
}
});
}
protected void handleConflicts(CDOViewInvalidationEvent e)
{
for (CDOObject obj : e.getDetachedObjects())
{
EObject element = CDOUtil.getEObject(obj);
View view = DawnDiagramUpdater.findViewByContainer(element);
DawnConflictHelper.handleConflictedView(CDOUtil.getCDOObject(element), view, getDiagramEditor(editor));
}
}
private void handleObject(CDOObject dirtyObject)
{
if (dirtyObject.cdoInvalid())
{
return;
}
EObject element = CDOUtil.getEObject(dirtyObject); // either sementic object or notational
View view = DawnDiagramUpdater.findView(element);
if (DawnConflictHelper.isConflicted(dirtyObject))
{
// DawnConflictHelper.handleConflictedView(dirtyObject, view, editor);
return;
}
DiagramDocumentEditor diagramEditor = getDiagramEditor(editor);
EditPart relatedEditPart = DawnDiagramUpdater.findEditPart(view, diagramEditor.getDiagramEditPart().getViewer());
if (relatedEditPart != null)
{
if (TRACER.isEnabled())
{
TRACER.format("Updating EditPart {0} ", relatedEditPart); //$NON-NLS-1$
}
DawnDiagramUpdater.refreshEditPart(relatedEditPart.getParent(), diagramEditor);
}
else
{
if (TRACER.isEnabled())
{
TRACER.format("Updating DiagramEditPart {0} ", diagramEditor.getDiagramEditPart()); //$NON-NLS-1$
}
DawnDiagramUpdater.refreshEditPart(diagramEditor.getDiagramEditPart(), diagramEditor);
}
}
protected void refresh(CDOObject object)
{
DiagramDocumentEditor diagramEditor = getDiagramEditor(editor);
View view = DawnDiagramUpdater.findViewByContainer(object);
if (view == null)
{
view = DawnDiagramUpdater.findViewForModel(object, diagramEditor);
}
if (view == null)
{
DawnDiagramUpdater.findViewFromCrossReferences(object);
}
EditPart relatedEditPart = DawnDiagramUpdater.findEditPart(view, diagramEditor.getDiagramEditPart().getViewer());
if (relatedEditPart != null)
{
if (TRACER.isEnabled())
{
TRACER.format("Updating EditPart {0} ", relatedEditPart); //$NON-NLS-1$
}
EditPart parent = relatedEditPart.getParent();
if (parent instanceof IGraphicalEditPart)
{
DawnDiagramUpdater.refresh((IGraphicalEditPart)parent);
}
else
{
DawnDiagramUpdater.refreshEditPart(parent, diagramEditor);
}
}
else
{
if (TRACER.isEnabled())
{
TRACER.format("Updating DiagramEditPart {0} ", getDiagramEditor(editor).getDiagramEditPart()); //$NON-NLS-1$
}
DawnDiagramUpdater.refresh(diagramEditor.getDiagramEditPart());
}
}
}
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