package com.rle.monitor;

/*
 * RLE Surface Crack Detector Graphing Software
 *
 * Copyright (C) 2002 RLE Technologies
 * For more information visit http://www.rletech.com/
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
 * USA.
 */

/**
 * @author Andy Goth
 * @author Eric Peterson
 * @author Matt Lane
 * @version 0.1
 */

import java.awt.*;
import java.awt.event.*;
import java.text.*;
import java.util.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.plaf.*;
import javax.swing.text.*; 

/** Spinner! */
public class MySpinner extends JComponent {
	private String text;
	private int min;
	private int max;
	private int val;

	public MySpinner() {this(null, 0, 255, 0);}
	public MySpinner(int min, int max, int val) {this(null, min, max, val);}
	public MySpinner(String text) {this(text, 0, 255, 0);}
	public MySpinner(String text, int min, int max, int val)
	{
		this.text = text;
		this.min = min;
		this.max = max;
		this.val = val;

		ComponentUI ui = MySpinnerUI.createUI(this);
		ui.installUI(this);
		setUI(ui);
	}

	public MySpinnerUI getUI() {return (MySpinnerUI)ui;}
	public void setUI(MySpinnerUI ui) {super.setUI(ui);}
	public void updateUI()
	{
		setUI((MySpinnerUI)UIManager.getUI(this));
		invalidate();
	}

	public void setText(String text) {this.text = text;}
	public String getText() {return text;}

	public int getValue() {return val;}
	public void setValue(int val)
	{
		setValueQuiet(val);
		fireStateChanged();
	}
	public void setValueQuiet(int val)
	{
		if (val < min) this.val = min;
		else if (val > max) this.val = max;
		else this.val = val;
		repaint();
	}

	public int getMinimum() {return min;}
	public void setMinimum(int min)
	{
		if (min > max) this.max = min;
		this.min = min;
		if (val < min) {
			this.val = min;
			repaint();
			fireStateChanged();
		}
	}

	public int getMaximum() {return max;}
	public void setMaximum(int max)
	{
		if (max < min) this.min = max;
		this.max = max;
		if (val > max) {
			this.val = max;
			repaint();
			fireStateChanged();
		}
	}

	public void addChangeListener(ChangeListener listener)
	{
		listenerList.add(ChangeListener.class, listener);
	}

	public void removeChangeListener(ChangeListener listener)
	{
		listenerList.remove(ChangeListener.class, listener);
	}

	/** Sends out notifications that the value changed. */
	protected void fireStateChanged()
	{
		Object[] listeners = listenerList.getListenerList();
		ChangeEvent e = null;
		for (int i = listeners.length - 2; i >= 0; i -= 2) {
			if (listeners[i] != ChangeListener.class) continue;
			if (e == null) e = new ChangeEvent(this);
			((ChangeListener)listeners[i + 1]).stateChanged(e);
		}
	}

	public boolean isFocusTraversable() {return isEnabled();}

	private static class IncrementAction extends AbstractAction {
		private boolean advance;

		IncrementAction(String name, boolean advance)
		{
			super(name);
			this.advance = advance;
		}

		public void actionPerformed(ActionEvent e)
		{
			Object source = e.getSource();
			if (!(source instanceof MySpinner)) return;

			MySpinner s = (MySpinner)source;
			int val = s.getValue() + (advance ? +1 : -1);
			if (s.getMinimum() <= val && val <= s.getMaximum());
				s.setValue(val);
		}
	}
}