AssociationPart.java

/* This file is part of Green.
 *
 * Copyright (C) 2005 The Research Foundation of State University of New York
 * All Rights Under Copyright Reserved, The Research Foundation of S.U.N.Y.
 * 
 * Green is free software, licensed under the terms of the Eclipse
 * Public License, version 1.0.  The license is available at
 * http://www.eclipse.org/legal/epl-v10.html
 */
package edu.buffalo.cse.green.relationship.association;

import edu.buffalo.cse.green.editor.controller.RelationshipPart;
import edu.buffalo.cse.green.editor.view.RelationshipFigure;

import org.eclipse.draw2d.PolygonDecoration;
import org.eclipse.draw2d.RotatableDecoration;
import org.eclipse.draw2d.geometry.PointList;

/**
 * Handles the user interaction with the relationship and draws the appropriate
 * figure.
 * 
 * @author bcmartin
 */
public class AssociationPart extends RelationshipPart {
	/**
	 * @see edu.buffalo.cse.green.editor.controller.RelationshipPart#createConnection()
	 */
	public RelationshipFigure createConnection() {
		RelationshipFigure connection = new RelationshipFigure();
		connection.addRelationshipFigureListener(this);
		return connection;
	}

	/**
	 * @see edu.buffalo.cse.green.editor.controller.RelationshipPart#createSourceArrow()
	 */
	public RotatableDecoration createSourceArrow() {
		return null;
	}

	/**
	 * @see edu.buffalo.cse.green.editor.controller.RelationshipPart#createTargetArrow()
	 */
	public RotatableDecoration createTargetArrow() {
		PolygonDecoration targetArrow = new PolygonDecoration();
		PointList points = new PointList();
		points.addPoint(0, 0);
		points.addPoint(-1, 1);
		points.addPoint(0, 0);
		points.addPoint(-1, -1);
		targetArrow.setTemplate(points);
		targetArrow.setScale(11, 7);
		return targetArrow;
	}
}