/**
 * UtilityTest.java demonstrates usage of the progress bar and
 * border methods. It is not intended as an example of good
 * graphics design.
 *
 * 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.Applet;
import java.awt.*;
import java.util.*;

public class JavaInfo extends java.applet.Applet
{
	public static final int	textAreaRow	= 24;
	public static final int	textAreaCol	= 40;
	public TextArea	textArea				= new TextArea(textAreaRow, textAreaCol);
	EtchedBorder	border					= new EtchedBorder(textArea);
	Choice			parameterChoice			= new Choice();
	int				currentChoice			= -1;
	Button			systemColorInfoButton	= new Button("System Color Info");
	Button			beepButton				= new Button("Beep");
	Button			systemThreadInfoButton	= new Button("Update ThreadInfo");
	Panel			buttonPanel				= new Panel();
	ColorTestDialog	colorTestDialog			= null;
	boolean			java11Classes			= false;
	public static final int	systemPropertyChoice	= 0;
	public static final int	toolkitDataChoice		= 1;
	public static final int	systemLocaleDataChoice	= 2;
	public static final int	systemTimezonesChoice	= 3;
	public static final int systemThreadInfoChoice	= 4;
	public static final int aboutJavaInfoChoice		= 5;
	public static final int	firstJava11Item			= 2;
	public static final String[] choices = {
		"System Properties",
		"Toolkit Data",
		"System Locale Data",
		"System Timezones",
		"Current Threads",
		"About JavaInfo"
	};
		
	public void init()
	{
		setBackground(Color.lightGray);
		textArea.setBackground(Color.white);
		border.setBackground(Color.gray);
		border.setLabelFont(new Font("TimesRoman", Font.BOLD, 12));
		border.setThickness(3).setGap(1);
		setFont(new Font("Courier", Font.PLAIN, 10));
		textArea.setEditable(false);
		try {
			String	version = System.getProperty("java.version");
			java11Classes	= (version.compareTo("1.1") >= 0);
		}
		catch (SecurityException e) {
			java11Classes	= false;
		}
		for (int i = 0; i < firstJava11Item; i++) {
			parameterChoice.addItem(choices[i]);
		}
		if (java11Classes) {
			for (int i = firstJava11Item; i < choices.length; i++) {
				parameterChoice.addItem(choices[i]);
			}
		}
		selectChoice(0);
		Panel mainPanel			= new Panel();
		mainPanel.setLayout(new BorderLayout(2, 2));
		mainPanel.add("Center", border);
		buttonPanel.setLayout(new FlowLayout(FlowLayout.RIGHT, 2, 2));
		/*
		 * Setting the font to Geneva 9 misaligns the popup window
		 * with respect to the buttons.
		 */
		Font		font		= new Font("Dialog", Font.PLAIN, 12);
		/* */
		systemThreadInfoButton.setFont(font);
		systemThreadInfoButton.setBackground(Color.white);
		buttonPanel.add(systemThreadInfoButton);
		systemThreadInfoButton.hide();
		/* */
		parameterChoice.setFont(font);
		parameterChoice.setBackground(Color.white);
		buttonPanel.add(parameterChoice);
		if (java11Classes) {
			systemColorInfoButton.setFont(font);
			systemColorInfoButton.setBackground(Color.white);
			beepButton.setFont(font);
			beepButton.setBackground(Color.white);
			buttonPanel.add(systemColorInfoButton);
			buttonPanel.add(beepButton);
		}
		mainPanel.add("South", buttonPanel);
		SimpleBorder	memoryPanel		= new SimpleBorder(new MemoryStatus());
		SimpleBorder	responsePanel	= new SimpleBorder(new ResponseTest());
		GridBagLayout gridbag	= new GridBagLayout();
		setLayout(gridbag);
		GridBagConstraints c	= new GridBagConstraints();
		c.gridx					= 0;
		c.gridy					= 0;
		c.gridwidth				= 2;
		c.gridheight			= 1;
		c.fill					= GridBagConstraints.BOTH;
		c.anchor				= GridBagConstraints.CENTER;
		c.weightx				= 1.0;
		c.weighty				= 1.0;
		c.insets			 	= new Insets(0, 0, 0, 0);
		gridbag.setConstraints(mainPanel, c);
		add(mainPanel);
		c.gridx					= 0;
		c.gridy					= 1;
		c.gridwidth				= 1;
		c.gridheight			= 1;
		c.fill					= GridBagConstraints.BOTH;
		c.anchor				= GridBagConstraints.WEST;
		c.weightx				= 1.0;
		c.weighty				= 0.0;
		c.insets			 	= new Insets(2, 2, 2, 2);
		gridbag.setConstraints(memoryPanel, c);
		add(memoryPanel);
		c.gridx					= 1;
		c.gridy					= 1;
		c.gridwidth				= 1;
		c.gridheight			= 1;
		c.fill					= GridBagConstraints.BOTH;
		c.anchor				= GridBagConstraints.EAST;
		c.weightx				= 1.0;
		c.weighty				= 0.0;
		c.insets			 	= new Insets(2, 2, 2, 2);
		gridbag.setConstraints(responsePanel, c);
		add(responsePanel);
		validate();
		show();
	}
	public boolean action(
			Event			event,
			Object			arg
		)
	{
		boolean		result		= true;
		if (event.target == systemColorInfoButton) {
			ColorTestDialog colorTestDialog = new ColorTestDialog(this);
		}
		else if (event.target == beepButton) {
			Toolkit.getDefaultToolkit().beep();
		}
		else if (event.target == systemThreadInfoButton) {
			if (currentChoice == systemThreadInfoChoice) {
				textArea.setText(new SystemThreadInfo(null).toString());
			}
		}
		else if (event.target == parameterChoice) {
			int	newChoice	= parameterChoice.getSelectedIndex();
			if (newChoice != currentChoice) {
				selectChoice(newChoice);
			}
		}
		else {
			result = false;
		}
		return (result);
	}
	public void selectChoice(
			int					newChoice
		)
	{
		int oldChoice			= currentChoice;
		currentChoice			= newChoice;
		border.setLabelText(choices[newChoice]);
		textArea.setText("Processing " + choices[newChoice] + "...");
		SystemInfo		info		= null;
		switch (newChoice) {
		case systemPropertyChoice:
			info	= new SystemPropertyInfo(border);
			break;
		case toolkitDataChoice:
			info	= new ToolkitDataInfo(border);
			break;
		case systemLocaleDataChoice:
			info = new SystemLocaleInfo(border);
			break;
		case systemTimezonesChoice:
			info = new SystemTimezonesInfo(border);
			break;
		case systemThreadInfoChoice:
			info = new SystemThreadInfo(border);
			break;
		case aboutJavaInfoChoice:
			info = new AboutJavaInfo(border);
			break;
		default:
			textArea.setText("Strange choice: " + newChoice);
			break;
		}
		if (oldChoice != systemThreadInfoChoice
		 && currentChoice == systemThreadInfoChoice) {
			systemThreadInfoButton.show();
			buttonPanel.layout();
			buttonPanel.repaint();
		}
		else if (oldChoice == systemThreadInfoChoice
			  && currentChoice != systemThreadInfoChoice) {
			systemThreadInfoButton.hide();
			buttonPanel.layout();
			buttonPanel.repaint();
		}
		if (info != null) {
			textArea.setText(info.toString());
		}
	}
	/**
	 * Stripped-down QuickSort.
	 * @param	vector		The vector of strings to sort
	 * @param	startIndex	The first element to sort
	 * @param	endIndex	The last element to sort
	 * @usage	JavaInfo.quickSort(vector, 0, vector.length - 1);
	 */
	public static void quickSort(
			String[]		vector,
			int				startIndex,
			int				endIndex
		)
	{
		int		i		= startIndex;
		int		j		= endIndex;
		String	pivot	= vector[(i + j) / 2];
		do {
			while (i < endIndex && pivot.compareTo(vector[i]) > 0) {
				++i;
			}
			while (j > startIndex && pivot.compareTo(vector[j]) < 0) {
				--j;
			}
			if (i < j) {
				String	temp	= vector[i];
				vector[i]		= vector[j];
				vector[j]		= temp;
			}
			if (i <= j) {
				++i;
				--j;
			}
		} while (i <= j);
		if (startIndex < j) {
			quickSort(vector, startIndex, j);
		}
		if (i < endIndex) {
			quickSort(vector, i, endIndex);
		}
	}
	public static void main(
			String		args[]
		)
	{
		Frame window		= new Frame("JavaInfo");
		Applet applet		= new JavaInfo();
		window.setLayout(new BorderLayout());
		window.add("Center", applet);
		window.pack();
		window.resize(500, 380);
		window.validate();
		window.show();
		applet.init();
	}
}