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/*****************************************************************************
* Copyright (c) 2010 CEA
*
*
* 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:
* Atos Origin - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.uml.diagram.sequence.command;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.gef.commands.Command;
import org.eclipse.gmf.runtime.common.core.command.CommandResult;
import org.eclipse.gmf.runtime.diagram.ui.editparts.ShapeNodeEditPart;
import org.eclipse.gmf.runtime.diagram.ui.requests.CreateViewRequest;
import org.eclipse.gmf.runtime.diagram.ui.requests.CreateViewRequest.ViewDescriptor;
import org.eclipse.gmf.runtime.diagram.ui.requests.EditCommandRequestWrapper;
import org.eclipse.gmf.runtime.emf.commands.core.command.AbstractTransactionalCommand;
import org.eclipse.gmf.runtime.emf.core.util.EObjectAdapter;
import org.eclipse.gmf.runtime.emf.type.core.IHintedType;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateElementRequest;
import org.eclipse.gmf.runtime.notation.Node;
import org.eclipse.gmf.runtime.notation.View;
/**
* Command to create an element and its associated view.
*
* @author Mathieu Velten
*
*/
public class CreateElementAndNodeCommand extends AbstractTransactionalCommand {
protected ShapeNodeEditPart nodeEditPart;
protected Point location;
protected EObject parent, element;
protected TransactionalEditingDomain editingDomain;
protected Command elementCreationCommand;
protected Command nodeCreationCommand;
protected Map<String, Object> createElementRequestParameters = new HashMap<String, Object>();
protected IHintedType elementType;
protected CreateViewRequest createViewRequest;
private List affectedFiles;
/**
*
* @param editingDomain
* editingDomain the editing domain.
* @param nodeEditPart
* the editpart of the graphical parent of the node to create.
* @param parent
* the parent of the element to create.
* @param elementType
* the GMF type of the element which will be created.
* @param location
* the location where to create the element figure.
*/
public CreateElementAndNodeCommand(TransactionalEditingDomain editingDomain, ShapeNodeEditPart nodeEditPart, EObject parent, IHintedType elementType, Point location) {
super(editingDomain, "Create element and node command", null);
this.nodeEditPart = nodeEditPart;
this.location = location;
this.parent = parent;
this.editingDomain = editingDomain;
this.elementType = elementType;
}
public List getAffectedFiles() {
if (affectedFiles == null) {
if (getCreatedView() != null) {
affectedFiles = getWorkspaceFiles(getCreatedView());
} else {
affectedFiles = super.getAffectedFiles();
}
}
return affectedFiles;
}
/**
* put a parameter which will be add to the parameters of the element creation request.
*
* @param key
* @param value
*/
public void putCreateElementRequestParameter(String key, Object value) {
createElementRequestParameters.put(key, value);
}
/**
* retrieve the view associated with the created execution specification
*
* @return the view or null if not created/founded
*/
public View getCreatedView() {
if(createViewRequest != null) {
List l = (List)createViewRequest.getNewObject();
if(!l.isEmpty() && l.get(0) instanceof ViewDescriptor) {
return (View)((ViewDescriptor)l.get(0)).getAdapter(View.class);
}
}
return null;
}
public void undo() {
if(nodeCreationCommand != null && nodeCreationCommand.canUndo()) {
nodeCreationCommand.undo();
}
if(elementCreationCommand != null && elementCreationCommand.canUndo()) {
elementCreationCommand.undo();
}
}
/**
* Create the element in the model.
*
* @return the element.
*/
protected EObject createModelElement() {
CreateElementRequest req = new CreateElementRequest(editingDomain, parent, elementType);
req.addParameters(createElementRequestParameters);
elementCreationCommand = nodeEditPart.getCommand(new EditCommandRequestWrapper(req));
if(elementCreationCommand != null) {
elementCreationCommand.execute();
EObject result = req.getNewElement();
if(result instanceof EObject) {
return (EObject)result;
}
}
return null;
}
/**
* Create and execute the command to create the associated view.
* The element needs to be created first using createModelElement.
*/
protected void createElementView() {
if(nodeEditPart != null) {
// check if execution specification is already drawn
if(getCreatedView() == null) {
ViewDescriptor descriptor = new CreateViewRequest.ViewDescriptor(new EObjectAdapter((EObject)element), Node.class, elementType.getSemanticHint(), nodeEditPart.getDiagramPreferencesHint());
createViewRequest = new CreateViewRequest(descriptor);
createViewRequest.setLocation(location);
nodeCreationCommand = nodeEditPart.getCommand(createViewRequest);
if(nodeCreationCommand != null && nodeCreationCommand.canExecute()) {
nodeCreationCommand.execute();
}
}
}
}
@Override
protected CommandResult doExecuteWithResult(IProgressMonitor monitor,
IAdaptable info) throws ExecutionException {
element = createModelElement();
// create the view for the execution specification
if(element != null) {
createElementView();
}
return CommandResult.newOKCommandResult();
}
}
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