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/*
* Copyright (c) 2011-2013, 2015 Eike Stepper (Loehne, 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.editors.impl;
import org.eclipse.emf.cdo.CDOObject;
import org.eclipse.emf.cdo.dawn.appearance.DawnElementStylizer;
import org.eclipse.emf.cdo.dawn.editors.IDawnEditor;
import org.eclipse.emf.cdo.dawn.editors.impl.DawnAbstractEditorSupport;
import org.eclipse.emf.cdo.dawn.gmf.appearance.DawnAppearancer;
import org.eclipse.emf.cdo.dawn.gmf.notifications.impl.DawnGMFHandler;
import org.eclipse.emf.cdo.dawn.gmf.notifications.impl.DawnGMFLockingHandler;
import org.eclipse.emf.cdo.dawn.gmf.synchronize.DawnChangeHelper;
import org.eclipse.emf.cdo.dawn.gmf.util.DawnDiagramUpdater;
import org.eclipse.emf.cdo.dawn.notifications.BasicDawnListener;
import org.eclipse.emf.cdo.dawn.spi.DawnState;
import org.eclipse.emf.cdo.dawn.ui.stylizer.DawnElementStylizerRegistry;
import org.eclipse.emf.cdo.transaction.CDOTransactionHandlerBase;
import org.eclipse.emf.cdo.util.CDOUtil;
import org.eclipse.emf.cdo.view.CDOView;
import org.eclipse.emf.common.command.CommandStack;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.transaction.RecordingCommand;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.gef.EditPart;
import org.eclipse.gmf.runtime.diagram.ui.resources.editor.parts.DiagramDocumentEditor;
import org.eclipse.gmf.runtime.notation.View;
import java.util.Map;
/**
* @author Martin Fluegge
*/
public class DawnGMFEditorSupport extends DawnAbstractEditorSupport
{
private DawnGMFHandler dawnGMFHandler;
public DawnGMFEditorSupport(IDawnEditor editor)
{
super(editor);
dawnGMFHandler = createDawnGMFHandler(editor);
}
public void close()
{
CDOView view = getView();
if (view != null && !view.isClosed())
{
view.close();
}
}
@Override
protected BasicDawnListener getBasicHandler()
{
return dawnGMFHandler;
}
/**
* Creates a GMF-specific handler for the specified {@code editor}.
* <p>
* <strong>Note</strong> that this method is called in the constructor, so subclasses must
* be aware that {@code this} has not been fully initialized.
*
* @since 2.1
*/
protected DawnGMFHandler createDawnGMFHandler(IDawnEditor editor)
{
return new DawnGMFHandler(editor);
}
@Override
protected BasicDawnListener getLockingHandler()
{
return new DawnGMFLockingHandler(getEditor());
}
@Override
protected CDOTransactionHandlerBase getTransactionHandler()
{
return dawnGMFHandler;
}
/**
* @since 1.0
*/
@Override
public void rollback()
{
super.rollback();
final DiagramDocumentEditor diagramDocumentEditor = getDiagramEditor(getEditor());
TransactionalEditingDomain editingDomain = diagramDocumentEditor.getEditingDomain();
CommandStack commandStack = editingDomain.getCommandStack();
commandStack.execute(new RecordingCommand(editingDomain)
{
@Override
public void doExecute()
{
DawnAppearancer.setEditPartDefaultAllChildren(diagramDocumentEditor.getDiagramEditPart());
DawnDiagramUpdater.refreshEditPart(diagramDocumentEditor.getDiagramEditPart());
}
});
}
/**
* Obtains the GMF diagram editor from the given Dawn {@code editor}. If the
* {@code editor} is a {@link DiagramDocumentEditor}, then that is returned as
* is. Otherwise, try to get an {@code DiagramDocumentEditor}
* {@linkplain IAdaptable#getAdapter(Class) adapter} from the {@code editor}.
*
* @param editor the Dawn editor from which to get the GMF editor
* @since 2.1
*/
public static DiagramDocumentEditor getDiagramEditor(IDawnEditor editor)
{
if (editor instanceof DiagramDocumentEditor)
{
return (DiagramDocumentEditor)editor;
}
return editor.getAdapter(DiagramDocumentEditor.class);
}
public void refresh()
{
final DiagramDocumentEditor diagramDocumentEditor = getDiagramEditor(getEditor());
TransactionalEditingDomain editingDomain = diagramDocumentEditor.getEditingDomain();
CommandStack commandStack = editingDomain.getCommandStack();
commandStack.execute(new RecordingCommand(editingDomain)
{
@Override
public void doExecute()
{
DawnDiagramUpdater.refreshEditPart(diagramDocumentEditor.getDiagramEditPart());
}
});
}
public void lockObject(Object objectToBeLocked)
{
if (objectToBeLocked instanceof EditPart)
{
EditPart editPart = (EditPart)objectToBeLocked;
Object model = editPart.getModel();
if (model instanceof EObject)
{
CDOUtil.getCDOObject((EObject)model).cdoWriteLock().lock();
if (model instanceof View)
{
EObject element = ((View)model).getElement();
CDOUtil.getCDOObject(element).cdoWriteLock().lock();
}
}
DawnElementStylizer stylizer = DawnElementStylizerRegistry.instance.getStylizer(editPart);
if (stylizer != null)
{
stylizer.setLocked(editPart, DawnAppearancer.TYPE_LOCKED_LOCALLY);
}
}
refresh();
}
public void unlockObject(Object objectToBeUnlocked)
{
if (objectToBeUnlocked instanceof EditPart)
{
EditPart editPart = (EditPart)objectToBeUnlocked;
Object model = editPart.getModel();
if (model instanceof EObject)
{
CDOUtil.getCDOObject((EObject)model).cdoWriteLock().unlock();
if (model instanceof View)
{
EObject element = ((View)model).getElement();
CDOUtil.getCDOObject(element).cdoWriteLock().unlock();
}
}
DawnElementStylizer stylizer = DawnElementStylizerRegistry.instance.getStylizer(editPart);
if (stylizer != null)
{
stylizer.setDefault(editPart);
}
}
refresh();
}
public void handleRemoteLockChanges(Map<Object, DawnState> changedObjects)
{
for (Object o : changedObjects.keySet())
{
handleLock((CDOObject)o, getView());
}
refresh();
}
private void handleLock(CDOObject object, CDOView cdoView)
{
EObject element = CDOUtil.getEObject(object); // either semantic object or notational
View view = DawnDiagramUpdater.findView(element);
if (view != null)
{
// if there is no view, the semantic object is not displayed.
EditPart editPart = DawnDiagramUpdater.createOrFindEditPartIfViewExists(view, getDiagramEditor(getEditor()));
if (object.cdoWriteLock().isLocked())
{
DawnAppearancer.setEditPartLocked(editPart, DawnAppearancer.TYPE_LOCKED_LOCALLY);
}
else if (object.cdoWriteLock().isLockedByOthers())
{
DawnAppearancer.setEditPartLocked(editPart, DawnAppearancer.TYPE_LOCKED_GLOBALLY);
DawnChangeHelper.deactivateEditPart(editPart);
}
else
{
DawnAppearancer.setEditPartDefault(editPart);
DawnChangeHelper.activateEditPart(editPart);
}
}
}
}
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