plugins/customization/org.eclipse.papyrus.robotics.diagrams/src/org/eclipse/papyrus/robotics/diagrams/advices/UsesEditHelperAdvice.java

/*****************************************************************************
 * Copyright (c) 2017 CEA LIST and Thales
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *    Ansgar Radermacher - initial API and implementation 
 *   
 *****************************************************************************/

package org.eclipse.papyrus.robotics.diagrams.advices;

import org.eclipse.emf.ecore.EObject;
import org.eclipse.gmf.runtime.common.core.command.ICommand;
import org.eclipse.gmf.runtime.emf.type.core.edithelper.AbstractEditHelperAdvice;
import org.eclipse.gmf.runtime.emf.type.core.requests.ConfigureRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateRelationshipRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.GetEditContextRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.IEditCommandRequest;
import org.eclipse.papyrus.robotics.profile.robotics.commpattern.CommunicationPatternDefinition;
import org.eclipse.papyrus.robotics.profile.robotics.components.ComponentService;
import org.eclipse.papyrus.robotics.profile.robotics.generics.Uses;
import org.eclipse.papyrus.robotics.profile.robotics.services.ServiceDefinition;
import org.eclipse.papyrus.uml.tools.utils.StereotypeUtil;
import org.eclipse.uml2.uml.Class;
import org.eclipse.uml2.uml.Interface;

/**
 * Edit Helper Advice for {@link Uses}
 */
public class UsesEditHelperAdvice extends AbstractEditHelperAdvice {

	@Override
	public boolean approveRequest(IEditCommandRequest request) {
		if (request instanceof GetEditContextRequest) {
			GetEditContextRequest context = (GetEditContextRequest) request;
			if (context.getEditCommandRequest() instanceof CreateRelationshipRequest) {
				return approveCreateRelationshipRequest((CreateRelationshipRequest) context.getEditCommandRequest());
			}
		}
		return super.approveRequest(request);
	}

	/**
	 * Check that the source of the assignment is a technical policy
	 * 
	 * @param request
	 * @return
	 */
	protected boolean approveCreateRelationshipRequest(CreateRelationshipRequest request) {

		EObject source = request.getSource();
		EObject target = request.getTarget();

		//1st case allowed - CS uses Sdef
		boolean verifiedCondOnSource = (source instanceof Class) 	 && (StereotypeUtil.isApplied((Class) source, ComponentService.class));
		boolean verifiedCondOnTarget = (target instanceof Interface) && (StereotypeUtil.isApplied((Interface) target, ServiceDefinition.class));
		if (verifiedCondOnSource && verifiedCondOnTarget)
			return true;

		// 2nd case allowed - Sdef uses CommPatternDef
		verifiedCondOnSource = (source instanceof Interface) 	 && (StereotypeUtil.isApplied((Interface) source, ServiceDefinition.class));
		verifiedCondOnTarget = (target instanceof Class) && (StereotypeUtil.isApplied((Class) target, CommunicationPatternDefinition.class));
		if (verifiedCondOnSource && verifiedCondOnTarget)
			return true;
		return false;
	}

	/**
	 * {@inheritDoc}
	 * 
	 * @see org.eclipse.gmf.runtime.emf.type.core.edithelper.AbstractEditHelperAdvice#getBeforeConfigureCommand(org.eclipse.gmf.runtime.emf.type.core.requests.ConfigureRequest)
	 */
	@Override
	protected ICommand getBeforeConfigureCommand(ConfigureRequest request) {
		return super.getBeforeConfigureCommand(request);
	}


	/**
	 * @see org.eclipse.gmf.runtime.emf.type.core.edithelper.AbstractEditHelperAdvice#getAfterConfigureCommand(org.eclipse.gmf.runtime.emf.type.core.requests.CreateElementRequest)
	 */
	@Override
	protected ICommand getAfterConfigureCommand(ConfigureRequest request) {
		return super.getAfterConfigureCommand(request);
	}
}