/*
 * Copyright (c) 1998, Subrahmanyam Allamaraju. All Rights Reserved.
 * 
 * Permission to use, copy, modify, and distribute this software for
 * NON-COMMERCIAL purposes and without fee is hereby granted provided that this
 * copyright notice appears in all copies.
 *
 * This software is intended for demonstration purposes only, and comes without
 * any explicit or implicit warranty.
 *
 * Send all queries about this software to sallamar@cvimail.cv.com
 *
 */


import java.io.*;
import java.awt.*;
import java.applet.*;
import java.awt.event.*;

import COM.Subrahmanyam.utils.*;

public class Errors extends Frame
{
    // Some GUI components.
    LabledTextField operand1, operand2;
    
    TextField result;
    Button showConsole;
    Button doIt;
    Button dumpOutput;
    Button dumpError;
    Checkbox enableOutput;
    Checkbox enableError;
    
    Checkbox setError;
    
    // The Java Console.
    Console console;
    
    public Errors()
	{

	    super("Java Console: A Demo");
	    addWindowListener(new ErrorsListener(this));

	    // Create the GUI components.
	    operand1 = new LabledTextField("Operand 1", "");
	    operand2 = new LabledTextField("Operand 2", "");
	    
	    doIt = new Button("Divide");
	    showConsole = new Button("Show Console");
	    dumpOutput = new Button("Dump Output");
	    dumpError = new Button("Dump Errors");
	    
	    enableOutput = new Checkbox("Enable Output", true);
	    enableError = new Checkbox("Enable Error", true);
	    
	    // Set a layout and add them.
	    setLayout(new GridLayout(2, 0));
	    add(operand1);
	    add(operand2);
	    add(doIt);
	    add(enableOutput);
	    
	    add(showConsole);
	    add(dumpOutput);
	    add(dumpError);
	    add(enableError);
	    
	    // Setup listeners - the 1.1 stuff.
	    doIt.addActionListener(new DoIt());
	    showConsole.addActionListener(new ShowConsole());
	    
	    enableOutput.addItemListener(new EnableOutput());
	    enableError.addItemListener(new EnableError());

	    dumpOutput.addActionListener(new DumpOutput());
	    dumpError.addActionListener(new DumpError());

	    // Now create the console.
	    console = new Console();
	}

    public Dimension getMinimumSize() 
	{
	    return new Dimension(500, 90);
	}
    
    public Dimension getPreferredSize() 
	{
	    return getMinimumSize();
	}

    class DoIt implements ActionListener 
    {
	public void actionPerformed(ActionEvent e) 
	    {
		int result = (new Integer(operand1.getText())).intValue() / 
		    (new Integer(operand2.getText())).intValue();
		
		System.out.println(operand1.getText() + " / " +
				   operand2.getText() + " = " + result);
	    }
    }
    
    class ShowConsole implements ActionListener 
    {
	public void actionPerformed(ActionEvent e) 
	    {
		console.setVisible(true);
	    }
    }

    class DumpOutput implements ActionListener 
    {
	public void actionPerformed(ActionEvent e) 
	    {
		console.resetOutput();
		try {
		    System.out.println(console.getOutputContent().toString());
		}
		catch(IOException ex) {
		}
		console.setOutput();
	    }
    }
    
    class DumpError implements ActionListener 
    {
	public void actionPerformed(ActionEvent e) 
	    {
		console.resetError();
		try {
		    System.err.println(console.getErrorContent().toString());
		}
		catch(IOException ex) {
		    ex.printStackTrace();
		}
		console.setError();
	    }
    }
    
    class EnableOutput implements ItemListener 
    {
	public void itemStateChanged(ItemEvent e) 
	    {
		if(e.getStateChange() == ItemEvent.SELECTED)
		    console.setOutput();
		else
		    console.resetOutput();
	    }
    }

    class EnableError implements ItemListener 
    {
	public void itemStateChanged(ItemEvent e) 
	    {
		if(e.getStateChange() == ItemEvent.SELECTED) 
		    console.setError();
		else
		    console.resetError();
	    }
    }
    

    public static void main(String s[]) 
	{
	    Errors e = new Errors();
	    e.pack();
	    e.setVisible(true);
	}
    
    class LabledTextField extends Panel 
    {
	Label l;
	TextField tf;
	
	public LabledTextField(String label, String field) 
	    {
		super();
		l = new Label(label, Label.LEFT);
		tf = new TextField(field, 3);
		setLayout(new GridLayout(1, 2));
		add(l);
		add(tf);
	    }
	
	String getText() 
	    {
		return tf.getText();
	    }
	
	void setText(String s) 
	    {
		tf.setText(s);
	    }
    }

    class ErrorsListener extends WindowAdapter 
    {
	Frame frame;
	
	ErrorsListener(Frame frame) 
	    {
		this.frame = frame;
	    }
	
	public void windowClosing(WindowEvent e) 
	    {
		frame.setVisible(false);
		System.exit(0);
	    }
    }
}