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/*
* Copyright (c) 2004 - 2012 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 404184: handle View that has no element
*/
package org.eclipse.emf.cdo.dawn.gmf.synchronize;
import org.eclipse.emf.cdo.CDOObject;
import org.eclipse.emf.cdo.CDOState;
import org.eclipse.emf.cdo.dawn.editors.IDawnEditor;
import org.eclipse.emf.cdo.dawn.gmf.appearance.DawnAppearancer;
import org.eclipse.emf.cdo.dawn.gmf.util.DawnDiagramUpdater;
import org.eclipse.emf.cdo.internal.dawn.bundle.OM;
import org.eclipse.emf.cdo.transaction.CDOTransaction;
import org.eclipse.emf.cdo.util.CDOUtil;
import org.eclipse.emf.cdo.view.CDOView;
import org.eclipse.net4j.util.om.trace.ContextTracer;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.transaction.RecordingCommand;
import org.eclipse.gef.EditPart;
import org.eclipse.gmf.runtime.diagram.ui.resources.editor.parts.DiagramDocumentEditor;
import org.eclipse.gmf.runtime.notation.View;
/**
* @author Martin Fluegge
*/
public class DawnConflictHelper
{
private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG, DawnConflictHelper.class);
public static boolean handleConflictedView(CDOObject cdoObject, View view, DiagramDocumentEditor editor)
{
boolean cdoConflict = cdoObject.cdoConflict();
if (cdoConflict && view != null)
{
if (TRACER.isEnabled())
{
TRACER.format("Object ({0}) is in state conflict!", cdoObject); //$NON-NLS-1$
}
EditPart editPart = DawnDiagramUpdater.createOrFindEditPartIfViewExists(view, editor);
int typeConflictLocallyDeleted = evaluateConflictType(cdoObject);
DawnAppearancer.setEditPartConflicted(editPart, typeConflictLocallyDeleted);
}
return cdoConflict;
}
private static int evaluateConflictType(CDOObject cdoObject)
{
if (cdoObject.cdoState() == CDOState.DIRTY)
{
return DawnAppearancer.TYPE_CONFLICT_REMOTELY_AND_LOCALLY_CHANGED;
}
return DawnAppearancer.TYPE_CONFLICT_REMOTELY_DELETED;
}
public static void rollback(final DiagramDocumentEditor editor)
{
CDOView view = ((IDawnEditor)editor).getView();
if (view != null && view instanceof CDOTransaction)
{
((CDOTransaction)view).rollback();
}
editor.getEditingDomain().getCommandStack().execute(new RecordingCommand(editor.getEditingDomain())
{
@Override
public void doExecute()
{
DawnAppearancer.setEditPartDefaultAllChildren(editor.getDiagramEditPart());
DawnDiagramUpdater.refreshEditPart(editor.getDiagramEditPart());
}
});
}
/**
* TODO this method should decide whether the object is conflicted or not using special Policies
*
* @param object a non-{@code null} object
* @return whether the object is conflicted
*/
public static boolean isConflicted(EObject object)
{
CDOObject cdoObject = CDOUtil.getCDOObject(object);
if (cdoObject.cdoConflict())
{
return true;
}
if (object instanceof View)
{
// if the view is not, itself, conflicted, maybe its semantic element is (if it has one)
EObject element = ((View)object).getElement();
if (element != null)
{
CDOObject cdoElement = CDOUtil.getCDOObject(element);
return cdoElement.cdoConflict();
}
}
return false;
}
}
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