/*******************************************************************************
 * Copyright 2005-2007, CHISEL Group, University of Victoria, Victoria, BC,
 * Canada. 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: The Chisel Group, University of Victoria
 ******************************************************************************/
package org.eclipse.zest.tests.swt;

import org.eclipse.zest.core.widgets.Graph;
import org.eclipse.zest.core.widgets.GraphConnection;
import org.eclipse.zest.core.widgets.GraphNode;
import org.eclipse.zest.layouts.LayoutStyles;
import org.eclipse.zest.layouts.algorithms.SpringLayoutAlgorithm;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseMoveListener;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

/**
 * This snippet shows how to use the findFigureAt to get the figure under the mouse
 * 
 * @author Ian Bull
 * 
 */
public class GraphSnippet7 {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Display d = new Display();
		Shell shell = new Shell(d);
		shell.setText("GraphSnippet7");
		shell.setLayout(new FillLayout());
		shell.setSize(400, 400);

		final Graph g = new Graph(shell, SWT.NONE);

		GraphNode n = new GraphNode(g, SWT.NONE, "Paper");
		GraphNode n2 = new GraphNode(g, SWT.NONE, "Rock");
		GraphNode n3 = new GraphNode(g, SWT.NONE, "Scissors");
		new GraphConnection(g, SWT.NONE, n, n2);
		new GraphConnection(g, SWT.NONE, n2, n3);
		new GraphConnection(g, SWT.NONE, n3, n);
		g.setLayoutAlgorithm(new SpringLayoutAlgorithm(LayoutStyles.NO_LAYOUT_NODE_RESIZING), true);
		
		g.addMouseMoveListener(new MouseMoveListener() {

			public void mouseMove(MouseEvent e) {
				// Get the figure at the current mouse location 
				Object o = g.getFigureAt(e.x, e.y);
				if ( o != null ) {
					System.out.println(o + " is at: (" + e.x + "," + e.y + ")");
				}
			}
			
		});

		shell.open();
		while (!shell.isDisposed()) {
			while (!d.readAndDispatch()) {
				d.sleep();
			}
		}
	}
}