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/*****************************************************************************
* Copyright (c) 2018 CEA LIST, EclipseSource and others.
*
* 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:
* EclipseSource - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.uml.diagram.sequence.edit.policies;
import java.util.List;
import org.eclipse.draw2d.Connection;
import org.eclipse.draw2d.PolylineConnection;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.gef.Request;
import org.eclipse.gef.requests.CreateConnectionRequest;
import org.eclipse.gmf.runtime.common.core.command.ICommand;
import org.eclipse.gmf.runtime.diagram.core.edithelpers.CreateElementRequestAdapter;
import org.eclipse.gmf.runtime.diagram.ui.requests.CreateConnectionViewAndElementRequest;
import org.eclipse.gmf.runtime.emf.type.core.IElementType;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateRelationshipRequest;
import org.eclipse.papyrus.infra.gmfdiag.common.editpolicies.DefaultGraphicalNodeEditPolicy;
import org.eclipse.papyrus.infra.gmfdiag.common.service.palette.AspectUnspecifiedTypeConnectionTool.CreateAspectUnspecifiedTypeConnectionRequest;
import org.eclipse.papyrus.uml.diagram.sequence.figures.DurationLinkFigure;
import org.eclipse.papyrus.uml.diagram.sequence.providers.UMLElementTypes;
/**
* An extended {@link DefaultGraphicalNodeEditPolicy} which supports creation of DurationLinks
*/
public class DestructionOccurrenceGraphicalNodeEditPolicy extends DefaultGraphicalNodeEditPolicy {
@Override
protected ICommand getAfterConnectionCompleteCommand(CreateConnectionViewAndElementRequest request, final TransactionalEditingDomain editingDomain) {
if (isCreateDurationLink(request)) {
return null; // Prevent the superclass from "Fixing" the anchors
}
return super.getAfterConnectionCompleteCommand(request, editingDomain);
}
@Override
protected Connection createDummyConnection(Request req) {
if (req instanceof CreateConnectionRequest && isCreateDurationLink((CreateConnectionRequest) req)) {
return new DurationLinkFigure();
}
return new PolylineConnection();
}
private boolean isCreateDurationLink(CreateConnectionRequest request) {
CreateRelationshipRequest createElementRequest = getCreateRelationshipRequest(request);
if (createElementRequest == null) {
if (request instanceof CreateAspectUnspecifiedTypeConnectionRequest) {
CreateAspectUnspecifiedTypeConnectionRequest createRequest = (CreateAspectUnspecifiedTypeConnectionRequest) request;
List<?> types = createRequest.getElementTypes();
if (types.stream().allMatch(
type -> type == UMLElementTypes.DurationConstraint_Edge ||
type == UMLElementTypes.DurationObservation_Edge)) {
return true;
}
}
} else {
IElementType type = createElementRequest.getElementType();
return type == UMLElementTypes.DurationConstraint_Edge || type == UMLElementTypes.DurationObservation_Edge;
}
return false;
}
private CreateRelationshipRequest getCreateRelationshipRequest(CreateConnectionRequest request) {
if (false == request instanceof CreateConnectionViewAndElementRequest) {
return null;
}
CreateElementRequestAdapter requestAdapter = ((CreateConnectionViewAndElementRequest) request).getConnectionViewAndElementDescriptor().getCreateElementRequestAdapter();
if (requestAdapter == null) {
return null;
}
CreateRelationshipRequest createElementRequest = (CreateRelationshipRequest) requestAdapter.getAdapter(CreateRelationshipRequest.class);
return createElementRequest;
}
}
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