org.eclipse.fmc.blockdiagram.editor/src/org/eclipse/fmc/blockdiagram/editor/algorithm/connection/FMCConnectionAlgorithmFactory.java

/*******************************************************************************
 * <copyright>
 *
 * Copyright (c) 2013, 2013 SAP AG.
 * 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:
 *    SAP AG - initial API, implementation and documentation
 *
 * </copyright>
 *
 *******************************************************************************/
package org.eclipse.fmc.blockdiagram.editor.algorithm.connection;

import org.eclipse.graphiti.mm.pictograms.Connection;
import org.eclipse.graphiti.mm.pictograms.PictogramElement;

/**
 * This factory produces connection algorithms.
 * 
 * @author Benjamin Schmeling
 *
 */
public class FMCConnectionAlgorithmFactory {

	private static FMCConnectionAlgorithmFactory instance = null;

	/**
	 * This class cannot be instantiated it is a singleton.
	 */
	private FMCConnectionAlgorithmFactory() {
	}

	/**
	 * Return the singleton instance of this factory class.
	 * 
	 * @return The factory instance.
	 */
	public static synchronized FMCConnectionAlgorithmFactory getInstance() {
		if (instance == null) {
			instance = new FMCConnectionAlgorithmFactory();
		}
		return instance;
	}
	
	/**
	 * Returns the connection algorithm for the pictogram element. If the
	 * pictogram element is not a connection, this method will return null.
	 * 
	 * @param picto
	 *            The pictogram element for determination of the connection
	 *            algorithm.
	 * 
	 * @return The connection algorithm matching the pictogram input. Currently,
	 *         there is only one type of connection algorithm
	 */
	public FMCConnectionAlgorithm getAlgorithm(PictogramElement picto) {
		if (picto instanceof Connection)
			return new FMCConnectionAlgorithm();
		return null;
	}
}