/**
 *generic "About..." popup, along with licensing stuff
 * However, also planned to handle reading files, for trivial
 * "Help" window
 *
 * Note that this DOES NOT DISPOSE OF ITSELF.. it just makes
 * itself INVISIBLE, until you call setVisible(true) again.
 *
 * originally @version @(#) About.java 1.2@(#)
 * @author Philip Brown
 */


import java.awt.Frame;
import java.awt.Button;
import java.awt.Panel;
import java.awt.TextArea;
import java.awt.event.*;
import java.io.*;

class About extends Frame implements WindowListener,ActionListener
{
	public void windowOpened(WindowEvent evt) {  }
	public void windowClosing(WindowEvent evt)
	{
		setVisible(false);
	}
	public void windowClosed(WindowEvent evt) {  }
	public void windowActivated(WindowEvent evt) { }
	public void windowDeactivated(WindowEvent evt) { }
	public void windowIconified(WindowEvent evt) { }
	public void windowDeiconified(WindowEvent evt) { }

	public void actionPerformed(ActionEvent e)
	{
		// we only have one possibility!! dismiss...
		windowClosing(null);
	}

	TextArea ta;
	void sharedinit()
	{
		ta = new TextArea();
		ta.setEditable(false);
		ta.setColumns(62);
		ta.setRows(10);
		add(ta, "Center");
		addWindowListener(this);

		Button dismiss = new Button("dismiss");
		dismiss.addActionListener(this);
		Panel tmppanel = new Panel();
		tmppanel.add(dismiss);
		add(tmppanel, "South");
	}

	// little utility function, to load help files
	// This will load the file if we are in a directory,
	// OR if we are in a .jar file
	String fileToString(String filename)
	{
		InputStream fin=getClass().getResourceAsStream(filename);
		String filestring;
		byte buff[];
		try
		{
			if(fin==null){
				fin=new FileInputStream(filename);
			}
			buff=new byte[fin.available()];
			fin.read(buff);
		} catch (java.io.IOException err)
		{
			return new String("Could not load help file\n"+err.getMessage()+"\n");
		}
		filestring = new String(buff);
		return filestring;
	}


	/**
	 * Popup for displaying text, for help info, etc.
	 * Note that the file cannot contain more info than can
	 * be held in a single String
	 *
	 * @param filename file to read in, for text
	 * @param title what title to give this window
	 */
	public About(String filename, String title)
	{
		sharedinit();

		setTitle(title);
		String filetext = fileToString(filename);
		ta.append(filetext);
	}

	/**
	 * Basic constructor, hardcoded with some info
	 */
	public About()
	{
		sharedinit();

		setTitle("About box");
		ta.append("This is a program written by Philip Brown");
		ta.append(" (phil@bolthole.com)\n");
		ta.append("You may use it, copy it for yourself, or others, at no charge\n");
		ta.append("You may NOT, however:\n");
		ta.append("  a) claim it is yours, or you wrote it\n");
		ta.append("  b) sell it\n");
		ta.append("  c) modify it in any way\n");
		ta.append(" without consent from the author\n");
		ta.append("No guarantee is made about this software\n");
		ta.append("No liability of any kind is assumed by the author, etc, etc\n");
		ta.append("\n The above weasel-words are here for two reasons:\n");
		ta.append("   1. to deter criminal activity\n");
		ta.append("   2. to prevent splintering of distributions\n");
		ta.append("If you have suggestions, or would even like to add some\n");
		ta.append("code, please let me know\n");
		

	}

}