/*****************************************************************************
* Copyright (c) 2009 Atos Origin.
*
*
* 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.activity.edit.commands;
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.gmf.runtime.common.core.command.CommandResult;
import org.eclipse.gmf.runtime.common.core.command.ICommand;
import org.eclipse.gmf.runtime.emf.type.core.IElementType;
import org.eclipse.gmf.runtime.emf.type.core.commands.EditElementCommand;
import org.eclipse.gmf.runtime.emf.type.core.requests.ConfigureRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateElementRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateRelationshipRequest;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.papyrus.uml.diagram.activity.edit.dialogs.CreatePinsForObjectFlowDialog;
import org.eclipse.papyrus.uml.diagram.activity.edit.helpers.ObjectFlowEditHelper;
import org.eclipse.papyrus.uml.diagram.activity.edit.policies.UMLBaseItemSemanticEditPolicy;
import org.eclipse.papyrus.uml.diagram.activity.providers.ElementInitializers;
import org.eclipse.swt.widgets.Display;
import org.eclipse.uml2.uml.Activity;
import org.eclipse.uml2.uml.ActivityNode;
import org.eclipse.uml2.uml.ObjectFlow;
import org.eclipse.uml2.uml.UMLFactory;
/**
* @generated
*/
public class ObjectFlowCreateCommand extends EditElementCommand {
/**
* @generated NOT removed the final to allow pin creation
*/
private EObject source;
/**
* @generated NOT removed the final to allow pin creation
*/
private EObject target;
/**
* @generated
*/
protected Activity container;
/**
* @generated
*/
public ObjectFlowCreateCommand(CreateRelationshipRequest request, EObject source, EObject target) {
super(request.getLabel(), null, request);
this.source = source;
this.target = target;
container = deduceContainer(source, target);
}
/**
* @generated
*/
public boolean canExecute() {
if(source == null && target == null) {
return false;
}
if(source != null && false == source instanceof ActivityNode) {
return false;
}
if(target != null && false == target instanceof ActivityNode) {
return false;
}
if(getSource() == null) {
return true; // link creation is in progress; source is not defined yet
}
// target may be null here but it's possible to check constraint
if(getContainer() == null) {
return false;
}
return UMLBaseItemSemanticEditPolicy.getLinkConstraints().canCreateObjectFlow_4003(getContainer(), getSource(), getTarget());
}
/**
* @generated NOT handling addition of pins when creating an object flow on actions
*/
protected CommandResult doExecuteWithResult(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
if(!canExecute()) {
throw new ExecutionException("Invalid arguments in create link command"); //$NON-NLS-1$
}
// arrange source and target to add pins if there is an opaque action
if(ObjectFlowEditHelper.insertPinForStartingNewObjectFlow(getSource()) || ObjectFlowEditHelper.insertPinForEndingNewObjectFlow(getTarget())) {
CreatePinsForObjectFlowDialog dialog = new CreatePinsForObjectFlowDialog(Display.getDefault().getActiveShell(), getSource(), getTarget());
if(IDialogConstants.OK_ID == dialog.open()) {
// replace adequate source and target
source = dialog.getSource();
target = dialog.getTarget();
} else {
return CommandResult.newCancelledCommandResult();
}
}
ObjectFlow newElement = UMLFactory.eINSTANCE.createObjectFlow();
getContainer().getEdges().add(newElement);
newElement.setSource(getSource());
newElement.setTarget(getTarget());
ElementInitializers.getInstance().init_ObjectFlow_4003(newElement);
doConfigure(newElement, monitor, info);
((CreateElementRequest)getRequest()).setNewElement(newElement);
return CommandResult.newOKCommandResult(newElement);
}
/**
* @generated
*/
protected void doConfigure(ObjectFlow newElement, IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
IElementType elementType = ((CreateElementRequest)getRequest()).getElementType();
ConfigureRequest configureRequest = new ConfigureRequest(getEditingDomain(), newElement, elementType);
configureRequest.setClientContext(((CreateElementRequest)getRequest()).getClientContext());
configureRequest.addParameters(getRequest().getParameters());
configureRequest.setParameter(CreateRelationshipRequest.SOURCE, getSource());
configureRequest.setParameter(CreateRelationshipRequest.TARGET, getTarget());
ICommand configureCommand = elementType.getEditCommand(configureRequest);
if(configureCommand != null && configureCommand.canExecute()) {
configureCommand.execute(monitor, info);
}
}
/**
* @generated
*/
protected void setElementToEdit(EObject element) {
throw new UnsupportedOperationException();
}
/**
* @generated
*/
protected ActivityNode getSource() {
return (ActivityNode)source;
}
/**
* @generated
*/
protected ActivityNode getTarget() {
return (ActivityNode)target;
}
/**
* @generated
*/
public Activity getContainer() {
return container;
}
/**
* Default approach is to traverse ancestors of the source to find instance of container.
* Modify with appropriate logic.
*
* @generated
*/
protected Activity deduceContainer(EObject source, EObject target) {
// Find container element for the new link.
// Climb up by containment hierarchy starting from the source
// and return the first element that is instance of the container class.
for(EObject element = source; element != null; element = element.eContainer()) {
if(element instanceof Activity) {
return (Activity)element;
}
}
return null;
}
}