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/*****************************************************************************
* Copyright (c) 2010 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:
* Tatiana Fesenko (CEA LIST) - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.core.extension.commands;
import java.util.Collections;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.transaction.RecordingCommand;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.gmf.runtime.common.core.command.CommandResult;
import org.eclipse.gmf.runtime.emf.commands.core.command.AbstractTransactionalCommand;
import org.eclipse.papyrus.commands.wrappers.GMFtoEMFCommandWrapper;
import org.eclipse.papyrus.core.utils.DiResourceSet;
/**
* The Class ModelCreationCommandBase.
*/
public abstract class ModelCreationCommandBase implements IModelCreationCommand {
/**
* @see org.eclipse.papyrus.core.extension.commands.IModelCreationCommand#createModel(org.eclipse.papyrus.core.utils.DiResourceSet)
*
* @param diResourceSet
*/
public void createModel(final DiResourceSet diResourceSet) {
TransactionalEditingDomain transactionalEditingDomain = diResourceSet.getTransactionalEditingDomain();
RecordingCommand command = new RecordingCommand(transactionalEditingDomain) {
@Override
protected void doExecute() {
runAsTransaction(diResourceSet);
}
};
transactionalEditingDomain.getCommandStack().execute(command);
}
/**
* Run as transaction.
*
* @param diResourceSet
* the di resource set
*/
protected void runAsTransaction(final DiResourceSet diResourceSet) {
// Get the uml element to which the newly created diagram will be
// attached.
// Create the diagram
final Resource modelResource = diResourceSet.getModelResource();
TransactionalEditingDomain editingDomain = diResourceSet.getTransactionalEditingDomain();
AbstractTransactionalCommand command = new AbstractTransactionalCommand(editingDomain, "Initialize model", Collections.EMPTY_LIST) {
@Override
protected CommandResult doExecuteWithResult(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
CommandResult commandResult = CommandResult.newErrorCommandResult("Error during diagram creation");
EObject model = getRootElement(modelResource);
attachModelToResource(model, modelResource);
initializeModel(model);
return CommandResult.newOKCommandResult();
}
};
editingDomain.getCommandStack().execute(new GMFtoEMFCommandWrapper(command));
}
/**
* Initialize model.
*
* @param owner
* the owner
*/
protected void initializeModel(EObject owner) {
}
/**
* Get the root element associated with canvas.
*
* @param modelResource
* the model resource
* @return the root element
*/
protected EObject getRootElement(Resource modelResource) {
EObject rootElement = null;
if(modelResource != null && modelResource.getContents() != null && modelResource.getContents().size() > 0) {
Object root = modelResource.getContents().get(0);
if(root instanceof EObject) {
rootElement = (EObject)root;
}
} else {
rootElement = createRootElement();
}
return rootElement;
}
/**
* Store model element in the resource.
*/
protected void attachModelToResource(EObject root, Resource resource) {
resource.getContents().add(root);
}
/**
* Create the root element of an EMF model
*
* @return the root element
*/
protected abstract EObject createRootElement();
}
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