ModelOpenEditorEditPolicy.java

/*
 * Copyright (c) 2012-2016 Marsha Chechik, Alessio Di Sandro, Michalis Famelis,
 * Rick Salay.
 * 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:
 *    Alessio Di Sandro - Implementation.
 */
package edu.toronto.cs.se.mmint.mid.diagram.edit.policies;

import org.eclipse.gef.EditPart;
import org.eclipse.gef.Request;
import org.eclipse.gef.commands.Command;
import org.eclipse.gmf.runtime.diagram.ui.commands.ICommandProxy;
import org.eclipse.gmf.runtime.notation.HintedDiagramLinkStyle;
import org.eclipse.gmf.runtime.notation.NotationPackage;
import org.eclipse.gmf.runtime.notation.Style;
import org.eclipse.gmf.runtime.notation.View;

import edu.toronto.cs.se.mmint.mid.diagram.edit.commands.ModelOpenEditorCommand;

/**
 * The open editor edit policy for models.
 * 
 * @author Alessio Di Sandro
 * 
 */
public class ModelOpenEditorEditPolicy extends ModelOpenDiagramEditPolicy {

	/**
	 * Gets the command to open a model editor.
	 * 
	 * @param req
	 *            The request.
	 * @return The executable command.
	 */
	@Override
	protected Command getOpenCommand(Request request) {

		EditPart targetEditPart = getTargetEditPart(request);
		if (false == targetEditPart.getModel() instanceof View) {
			return null;
		}
		View view = (View) targetEditPart.getModel();
		Style link = view.getStyle(NotationPackage.eINSTANCE
				.getHintedDiagramLinkStyle());
		if (false == link instanceof HintedDiagramLinkStyle) {
			return null;
		}
		return new ICommandProxy(new ModelOpenEditorCommand(
				(HintedDiagramLinkStyle) link));
	}

}