package ngp.swing;

import javax.swing.JButton;
import javax.swing.ImageIcon;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.lang.reflect.Method;


public class MethodButton extends JButton
{
    private Object myReceiver;
    private Method myMethod;


    public MethodButton (ImageIcon image, Object target, String methodName)
    {
        super(image);
        init(target, methodName);
    }

    public MethodButton (String title, Object target, String methodName)
    {
        super(title);
        init(target, methodName);
    }


    public void setMethod (Object target, String name)
    {
        try
        {
            myReceiver = target;
            myMethod = target.getClass().getDeclaredMethod(name, new Class[0]);
        }
        catch (Exception e)
        {
            myMethod = null;
        }
    }


    protected void init (Object target, String name)
    {
        setMethod(target, name);
        addActionListener(
            new ActionListener()
            {
                public void actionPerformed(ActionEvent evt)
                {
                    try
                    {
                        if (myMethod != null)
                           myMethod.invoke(myReceiver, new Object[0]);
                    }
                    catch (Exception e)
                    {
                        // do nothing
                    }
                }
            });
    }
}