EdgeConnectionRouter.java example

Explorer
Henshin-Editor-master
/*******************************************************************************
 * Copyright (c) 2010-2015 Henshin developers. 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:
 *     TU Berlin, University of Luxembourg, SES S.A.
 *******************************************************************************/
/**
 * 
 */
package de.tub.tfs.henshin.editor.figure.graph;

import org.eclipse.draw2d.AbstractRouter;
import org.eclipse.draw2d.ChopboxAnchor;
import org.eclipse.draw2d.Connection;
import org.eclipse.draw2d.ConnectionAnchor;
import org.eclipse.draw2d.ConnectionRouter;
import org.eclipse.draw2d.FanRouter;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.ShortestPathConnectionRouter;
import org.eclipse.draw2d.geometry.Point;
import org.eclipse.draw2d.geometry.PointList;
import org.eclipse.draw2d.geometry.Rectangle;

/**
 * The Class EdgeConnectionRouter.
 */
public class EdgeConnectionRouter extends AbstractRouter {

	/** The next router. */
	private ConnectionRouter nextRouter;

	/**
	 * Instantiates a new edge connection router.
	 * 
	 * @param figure
	 *            the figure
	 */
	public EdgeConnectionRouter(IFigure figure) {
		FanRouter fRouter = new FanRouter();
		ShortestPathConnectionRouter router = new ShortestPathConnectionRouter(
				figure);
		fRouter.setSeparation(35);
		router.setSpacing(20);
		fRouter.setNextRouter(router);
		setNextRouter(fRouter);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.draw2d.ConnectionRouter#route(org.eclipse.draw2d.Connection)
	 */
	@Override
	public void route(Connection connection) {
		ConnectionAnchor sourceAnchor = connection.getSourceAnchor();
		IFigure owner = sourceAnchor.getOwner();
		if (owner != connection
				.getTargetAnchor().getOwner()) {
			nextRouter.route(connection);
		} else {
			PointList points = connection.getPoints();
			points.removeAllPoints();
			Rectangle rectangle = owner.getBounds();
			int x = rectangle.x + rectangle.width;
			int y = rectangle.y;
			points.addPoint(x, y);
			points.addPoint(x, y - 20);
			points.addPoint(x + 30, y - 20);
			points.addPoint(x + 30, y + 10);
			points.addPoint((new ChopboxAnchor(owner)).getLocation(new Point(x + 30, y + 10)));
			connection.setPoints(points);
		}
	}

	/**
	 * Sets the next router.
	 * 
	 * @param nextRouter
	 *            the new next router
	 */
	public synchronized void setNextRouter(ConnectionRouter nextRouter) {
		this.nextRouter = nextRouter;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.draw2d.AbstractRouter#getConstraint(org.eclipse.draw2d.Connection
	 * )
	 */
	@Override
	public Object getConstraint(Connection connection) {
		return nextRouter.getConstraint(connection);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.draw2d.AbstractRouter#invalidate(org.eclipse.draw2d.Connection
	 * )
	 */
	@Override
	public void invalidate(Connection connection) {
		nextRouter.invalidate(connection);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.draw2d.AbstractRouter#remove(org.eclipse.draw2d.Connection)
	 */
	@Override
	public void remove(Connection connection) {
		nextRouter.remove(connection);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.draw2d.AbstractRouter#setConstraint(org.eclipse.draw2d.Connection
	 * , java.lang.Object)
	 */
	@Override
	public void setConstraint(Connection connection, Object constraint) {
		nextRouter.setConstraint(connection, constraint);
	}

}