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/*****************************************************************************
* Copyright (c) 2011 CEA LIST.
*
* 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:
*
* CEA LIST - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.infra.gmfdiag.common.commands;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.gmf.runtime.diagram.core.services.ViewService;
import org.eclipse.gmf.runtime.diagram.ui.commands.CreateCommand;
import org.eclipse.gmf.runtime.diagram.ui.requests.CreateViewRequest.ViewDescriptor;
import org.eclipse.gmf.runtime.emf.type.core.IElementType;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.papyrus.infra.emf.utils.EMFHelper;
/**
* A replacement for CreateCommand that avoids that takes into account the incorrect
* generation of ViewProvider by GMFTooling and modifies SemanticAdapter in call to {@link ViewService#provides(Class, org.eclipse.core.runtime.IAdaptable, View, String, int, boolean, org.eclipse.gmf.runtime.diagram.core.preferences.PreferencesHint)} .
*/
public class CreateViewCommand extends CreateCommand {
/** Constructor */
public CreateViewCommand(TransactionalEditingDomain editingDomain, ViewDescriptor viewDescriptor, View containerView) {
super(editingDomain, viewDescriptor, containerView);
}
/**
* {@inheritDoc}
*/
@Override
public boolean canExecute() {
// Warning the element adapter can possibly be null (see: https://bugs.eclipse.org/bugs/show_bug.cgi?id=353129)
if (viewDescriptor.getElementAdapter() == null) {
return false;
}
// Try to adapt the descriptor ElementAdapter in EObject
EObject element = EMFHelper.getEObject(viewDescriptor.getElementAdapter());
IElementType elementType = viewDescriptor.getElementAdapter().getAdapter(IElementType.class);
SemanticElementAdapter semanticAdapter = new SemanticElementAdapter(element, elementType);
// Use the semanticAdapter instead of view descriptor element adapter to avoid the use of provides(ViewForKind) method
// from ViewProvider which is incorrectly implemented in GMF Tooling generated editors (other editors may have undesired side-effect on each-other).
return ViewService.getInstance().provides(viewDescriptor.getViewKind(), semanticAdapter, containerView, viewDescriptor.getSemanticHint(), viewDescriptor.getIndex(), viewDescriptor.isPersisted(), viewDescriptor.getPreferencesHint());
}
}
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