/**
 * A simple dialog used by the MemoryStatus and Response test panels.
 *
 * This is loosly based on StatusMemory.java by Jef Poskanzer, from
 * his public distribution on <http://www.acme.com>
 *
 * Copyright &copy; 1996-1998 Martin Minow. All Rights Reserved.<p>
 *
 * Permission to use, copy, modify, and redistribute this software and its
 * documentation for personal, non-commercial use is hereby granted provided that
 * this copyright notice and appropriate documentation appears in all copies. This
 * software may not be distributed for fee or as part of commercial, "shareware,"
 * and/or not-for-profit endevors including, but not limited to, CD-ROM collections,
 * online databases, and subscription services without specific license.<p>
 *
 * @author <a href="mailto:minow@apple.com">Martin Minow</a>
 * @version 1.0
 * Set tabs every 4 characters.
 */
import java.applet.*;
import java.awt.*;
import java.util.*;
import java.lang.*;

public class UpdateIntervalPanel extends Panel
{
	public static final long	defaultUpdateInterval = 2000;
	private long		updateInterval			= defaultUpdateInterval;
	private Button		updateIntervalButton	= new Button("Set Update Interval");
	private TextField	updateIntervalField		= new TextField(
					Long.toString(defaultUpdateInterval), 6);

	public UpdateIntervalPanel()
	{
		updateIntervalButton.setBackground(Color.white);
		updateIntervalField.setBackground(Color.white);
		setLayout(new FlowLayout(FlowLayout.CENTER, 2, 2));
		setFont(GetDialogFont.getFont());
		setBackground(Color.gray);
		add(updateIntervalField);
		add(new Label("Msec"));
		add(updateIntervalButton);
	}
	/*
	 * Accessors.
	 */
	public long getUpdateInterval()	{
		return (updateInterval);
	}
	public void setUpdateInterval(
			long		updateInterval
		)
	{
		this.updateInterval = updateInterval;
		updateIntervalField.setText(Long.toString(updateInterval));
	}		
	/*
	 * We use action to remain Java 1.0.2 complient
	 */
	public boolean action(
			Event			event,
			Object			arg
		)
	{
		boolean		result		= false;
		if (event.target == updateIntervalButton) {
			try {
				long updateInterval = Long.parseLong(updateIntervalField.getText());
				if (updateInterval <= 0) {
					throw new NumberFormatException("Value must be positive");
				}
				/*
				 * This is kind of hokey -- we change the event target
				 * to ourself, and throw it to the enclosing container
				 * and then return false so it's still in the food chain.
				 */
				this.updateInterval = updateInterval;
				event.target = this;
				
			}
			catch (NumberFormatException e) {
				/*
				 * This should be replaced by a dialog.
				 */
				System.out.println("Invalid sleeptime: " + e);
				result = true;
			}
		}
		return (result);
	}
}