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/*****************************************************************************
* Copyright (c) 2009-2011 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:
* Yann Tanguy (CEA LIST) yann.tanguy@cea.fr - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.uml.diagram.component.custom.edit.command;
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.gef.EditPart;
import org.eclipse.gmf.runtime.common.core.command.CommandResult;
import org.eclipse.gmf.runtime.common.core.command.ICommand;
import org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart;
import org.eclipse.gmf.runtime.emf.type.core.IElementType;
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.papyrus.uml.diagram.component.custom.edit.policies.GraphicalNodeEditPolicy;
import org.eclipse.papyrus.uml.diagram.component.part.Messages;
import org.eclipse.papyrus.uml.diagram.component.providers.ElementInitializers;
import org.eclipse.uml2.uml.ConnectableElement;
import org.eclipse.uml2.uml.Connector;
import org.eclipse.uml2.uml.ConnectorEnd;
import org.eclipse.uml2.uml.Port;
import org.eclipse.uml2.uml.Property;
import org.eclipse.uml2.uml.StructuredClassifier;
import org.eclipse.uml2.uml.UMLFactory;
/**
* <pre>
* This class is a custom creation command for Connector.
*
* Difficulties for Connector creation:
* - differences between semantic (ConnectableEnd) graphical (ConnectableElement) ends of Connector
* - requires to know not only the graphical end (Port, Property) but also the graphical parent in case of Port.
*
* The Connector source and target are declared as ConnectorEnd in the GMFGEN model to ensure correct validation,
* but the real source and target are ConnectableElement.
*
* </pre>
*/
public class ConnectorCreateCommand extends org.eclipse.papyrus.uml.diagram.component.edit.commands.ConnectorCreateCommand {
/** Graphical parent of Source **/
protected Property sourcePartWithPort = null;
/** Graphical parent of Target **/
protected Property targetPartWithPort = null;
/** Graphical EditPart of Source **/
protected GraphicalEditPart sourceGraphicalEditPart = null;
/** Graphical EditPart of Target **/
protected GraphicalEditPart targetGraphicalEditPart = null;
/**
* Constructor of Connector custom creation command
*
* @param req
* the creation request
* @param source
* the connector source element
* @param target
* the connector target element
*/
public ConnectorCreateCommand(CreateRelationshipRequest req, EObject source, EObject target) {
super(req, source, target);
// Resolve graphical parents of source and target store in request as Parameters
// These parameters are added in request by (custom) GraphicalNodeEditPolicy
if(req.getParameter(GraphicalNodeEditPolicy.CONNECTOR_CREATE_REQUEST_SOURCE_PARENT) instanceof Property) {
sourcePartWithPort = (Property)req.getParameter(GraphicalNodeEditPolicy.CONNECTOR_CREATE_REQUEST_SOURCE_PARENT);
}
if(req.getParameter(GraphicalNodeEditPolicy.CONNECTOR_CREATE_REQUEST_TARGET_PARENT) instanceof Property) {
targetPartWithPort = (Property)req.getParameter(GraphicalNodeEditPolicy.CONNECTOR_CREATE_REQUEST_TARGET_PARENT);
}
if(req.getParameter(GraphicalNodeEditPolicy.CONNECTOR_CREATE_REQUEST_SOURCE_GRAPHICAL) instanceof GraphicalEditPart) {
sourceGraphicalEditPart = (GraphicalEditPart)req.getParameter(GraphicalNodeEditPolicy.CONNECTOR_CREATE_REQUEST_SOURCE_GRAPHICAL);
}
if(req.getParameter(GraphicalNodeEditPolicy.CONNECTOR_CREATE_REQUEST_TARGET_GRAPHICAL) instanceof GraphicalEditPart) {
targetGraphicalEditPart = (GraphicalEditPart)req.getParameter(GraphicalNodeEditPolicy.CONNECTOR_CREATE_REQUEST_TARGET_GRAPHICAL);
}
container = deduceContainer(_getSource(), _getTarget());
}
/**
* Replaces the original getter which is cast as ConnectorEnd (expected end of Connector)
*
* @return the element that is graphically connected to Connector as source
*/
protected ConnectableElement _getSource() {
return (ConnectableElement)source;
}
/**
* Replaces the original getter which is cast as ConnectorEnd (expected end of Connector)
*
* @return the element that is graphically connected to Connector as target
*/
protected ConnectableElement _getTarget() {
return (ConnectableElement)target;
}
/**
* <pre>
* Checks if the Connector can be created or not.
*
* {@inheritDoc}
* </pre>
*/
@Override
public boolean canExecute() {
if((source == null) && (target == null)) {
return false;
}
if((source != null) && !(source instanceof ConnectableElement)) {
return false;
}
if((target != null) && !(target instanceof ConnectableElement)) {
return false;
}
if(source == null) {
return true; // link creation is in progress; source is not defined yet
}
if((target != null) && (getContainer() == null)) {
return false;
}
// return
// UMLBaseItemSemanticEditPolicy.LinkConstraints.canCreateConnector_4013(getContainer(),
// _getSource(),
// _getTarget());
// this returns true anyway...
return true;
}
/**
* <pre>
* Creates the new Connector.
*
* {@inheritDoc}
* </pre>
*/
@Override
protected CommandResult doExecuteWithResult(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
if(!canExecute()) {
throw new ExecutionException("Invalid arguments in create link command");
}
Connector newElement = UMLFactory.eINSTANCE.createConnector();
getContainer().getOwnedConnectors().add(newElement);
ConnectorEnd end0 = UMLFactory.eINSTANCE.createConnectorEnd();
end0.setLower(1);
end0.setUpper(1);
if(_getSource() instanceof Port) {
end0.setRole((Port)_getSource());
end0.setPartWithPort(sourcePartWithPort);
} else if(_getSource() instanceof ConnectableElement) {
end0.setRole((ConnectableElement)_getSource());
} else {
throw new ExecutionException("Invalid source in create Connector command");
}
ConnectorEnd end1 = UMLFactory.eINSTANCE.createConnectorEnd();
end1.setLower(1);
end1.setUpper(1);
if(_getTarget() instanceof Port) {
end1.setRole((Port)_getTarget());
end1.setPartWithPort(targetPartWithPort);
} else if(_getTarget() instanceof ConnectableElement) {
end1.setRole((ConnectableElement)_getTarget());
} else {
throw new ExecutionException("Invalid target in create Connector command");
}
newElement.getEnds().add(end0);
newElement.getEnds().add(end1);
ElementInitializers.getInstance().init_Connector_4019(newElement);
doConfigure(newElement, monitor, info);
((CreateElementRequest)getRequest()).setNewElement(newElement);
return CommandResult.newOKCommandResult(newElement);
}
/**
* <pre>
* This method is the exact copy of the inherited method, except that it uses the local getters
* (_getSource(), _getTarget()).
*
* {@inheritDoc}
* </pre>
*/
@Override
protected void doConfigure(Connector 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);
}
}
/**
*
* Tries to find a common StructuredClassifier container to add the new Connector.
*
* @see org.eclipse.papyrus.uml.diagram.composite.edit.commands.ConnectorCreateCommand#deduceContainer(org.eclipse.emf.ecore.EObject,
* org.eclipse.emf.ecore.EObject)
*
* @param source
* the source object
* @param target
* the target object
* @return a common StructuredClassifier container (graphical search)
*/
@Override
protected StructuredClassifier deduceContainer(EObject source, EObject target) {
StructuredClassifier containerProposedBySource = proposedContainer(sourceGraphicalEditPart);
StructuredClassifier containerProposedByTarget = proposedContainer(targetGraphicalEditPart);
StructuredClassifier deducedContainer = null;
if((containerProposedBySource != null) && (containerProposedByTarget != null)) {
if(containerProposedBySource == containerProposedByTarget) {
deducedContainer = containerProposedBySource;
}
}
return deducedContainer;
}
/**
* Parse graphical parent of the graphicalEditPart until a StructureClassifier is found.
*
* @param graphicalEditPart
* the graphical edit part
* @return null or a StructuredClassifier that graphically contains the graphicalEditPart
*/
private StructuredClassifier proposedContainer(GraphicalEditPart graphicalEditPart) {
for(EditPart ep = graphicalEditPart; ep != null; ep = ep.getParent()) {
if(ep instanceof GraphicalEditPart) {
GraphicalEditPart parent = (GraphicalEditPart)ep;
EObject semanticParent = parent.resolveSemanticElement();
if(semanticParent instanceof StructuredClassifier) {
return (StructuredClassifier)semanticParent;
}
}
}
return null;
}
}
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