import javax.swing.*;
import java.awt.event.*;

public class CommandAdjust implements ActionListener {

	private String command;
	private JTextField f;
	private DHJoint j;

	public CommandAdjust(String command, JTextField f, DHJoint j)
	{
		this.command = command;
		this.f = f;
		this.j = j;
	}

	public void actionPerformed(ActionEvent e)
	{
		String text = this.f.getText();
		double adj = Double.parseDouble(text);
		if (this.command.equals("+")) {
			adj += .10;
		} else
		if (this.command.equals("++")) {
			adj += 1.0;
		} else
		if (this.command.equals("--")) {
			adj -= 1.0;
		} else
		if (this.command.equals("-")) {
			adj -= .10;
		}
		adj = this.j.constrain(adj);
		this.j.adjust(adj);
		this.f.setText(String.valueOf(adj));
	}
}