/* Author: Jeff Dalton
 * Updated: Sun Dec  2 00:13:22 2001 by Jeff Dalton
 * Copyright: (c) 2001, AIAI, University of Edinburgh
 */

package ix.util;

import javax.swing.*;
import java.awt.Container;
import java.awt.BorderLayout;
import java.awt.event.*;
import java.util.*;

import ix.util.*;
import ix.util.lisp.*;

import ix.iface.util.TranscriptTextArea;

/**
 * A TextArea that has its own frame and some buttons.
 */
public class TextAreaFrame extends TranscriptTextArea {

    TFrame frame;
    List listeners = new LinkedList();

    public TextAreaFrame(String title) {
	this(title, new String[] {});
    }

    public TextAreaFrame(String title, String[] buttons) {
	// The rows and cols would be right only with a fixed-width font. /\/
	super(10, 60);		// 10 rows, 60 columns
	frame = new TFrame(title, buttons);
	frame.pack();
	frame.setVisible(true);
    }

    public TFrame getFrame() {		// just in case
	return frame;
    }

    static public interface TListener {
	public void buttonPressed(String actionCommand);
    }

    public void addListener(TListener listener) {
	this.listeners.add(listener);
    }

    public void fireButtonPressed(String actionCommand) {
	for (Iterator i = listeners.iterator(); i.hasNext();) {
	    TListener listener = (TListener)i.next();
	    listener.buttonPressed(actionCommand);
	}
    }

    // Modify some JTextArea methods and provide some frame-like ones.

    public void setText(String text) {
	super.setText(text);
	frame.validate();
    }

    public void append(String text) {
	super.append(text);
	frame.validate();
    }

    public void setVisible(boolean b) {
	frame.setVisible(b);
    }

    // Our frame class

    class TFrame extends JFrame {

	Container contentPane;

	TFrame(String title, String[] buttons) {
	    super(title);
	    // setSize(400, 100);
	    contentPane = getContentPane();
	    // default is equiv to setLayout(new BorderLayout());

	    contentPane.add(new JScrollPane(TextAreaFrame.this),
			    BorderLayout.CENTER);
	    if (buttons.length > 0)
		contentPane.add(makeButtonPanel(buttons),
				BorderLayout.SOUTH);
	}

	protected JPanel makeButtonPanel(String[] buttons) {
	    JPanel panel = new JPanel();
	    // Stick with default flowlayout for now.
	    for (int i = 0; i < buttons.length; i++) {
		String actionCommand = buttons[i];
		panel.add(makeButton(actionCommand));
	    }
	    return panel;
	}

	protected JButton makeButton(String command) {
	    JButton b = new JButton(command);
	    b.addActionListener(buttonListener);
	    return b;
	}

	protected ActionListener buttonListener = new ActionListener() {
	    public void actionPerformed(ActionEvent e) {
		String command = e.getActionCommand();
		TextAreaFrame.this.fireButtonPressed(command);
		if (command.equals("Close")) {
		    TFrame.this.setVisible(false);
		}
	    }
	};

    }

}

// Issues:
// * Consider moving this class to package ix.iface.util.