Graph Script Code

package ls.graph.ui;

import java.awt.FlowLayout;

import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JPanel;

import ls.graph.script.Algorithm;
import ls.graph.script.AlgorithmListener;
import ls.graph.script.GraphScriptEngine;

public class ControlPanel extends JPanel implements AlgorithmListener
{
	private static final long serialVersionUID = 1L;

	MainWindow mainWindow = null;
	private JButton btnExecute, btnExit, btnSave, btnLoad, btnStop,btnReset;
	private StopAlgorithmAction stopAction = null;
//	Algorithm currentAlgorithm = null;
	
	ControlPanel(MainWindow mWindow)
	{
		super();
		this.mainWindow = mWindow;
		initComponents();
	}
	
	private void initComponents()
	{
		BoxLayout l = new BoxLayout(this,BoxLayout.Y_AXIS);
		this.setLayout(l);
		
		JPanel controlPane = new JPanel();
		controlPane.setLayout(new FlowLayout());
		btnExecute = new JButton(new ExecuteAction(this.mainWindow));
		btnExit = new JButton(new ExitAction(this.mainWindow));
		btnSave = new JButton(new SaveScriptAction(this.mainWindow, this.mainWindow));
		btnLoad = new JButton(new LoadScriptAction(this.mainWindow, this.mainWindow));
		stopAction = new StopAlgorithmAction();
		btnStop = new JButton(stopAction);
		btnStop.setEnabled(false); //starts disabled
		btnReset = new JButton(
				new ResetAlgorithmAction((GraphScriptEngine)(this.mainWindow.scriptEngine)));
		btnReset.setEnabled(false);
		
		controlPane.add(btnLoad);
		controlPane.add(btnSave);
		controlPane.add(btnExecute);
		controlPane.add(btnStop);
		controlPane.add(btnReset);
		controlPane.add(btnExit);
		
		this.add(controlPane);
		this.add(this.mainWindow.createStatusPanel());
	}
	
	public void executionEnded(Algorithm alg)
	{
		btnSave.setEnabled(true);
		btnLoad.setEnabled(true);
		btnExecute.setEnabled(true);
		btnExit.setEnabled(true);
		btnStop.setEnabled(false);
		btnReset.setEnabled(true);
		stopAction.setAlgorithm(null);
	}

	public void executionStarted(Algorithm alg)
	{
		stopAction.setAlgorithm(alg);
		btnSave.setEnabled(false);
		btnLoad.setEnabled(false);
		btnExecute.setEnabled(false);
		btnExit.setEnabled(false);
		btnStop.setEnabled(true);
		btnReset.setEnabled(false);
	}

	public void startingStep(int stepIndex)
	{}
	
} //end of ControlPanel class