// Pure Java UI elements, such as a file selector
// Adapted from Marq's PETSCII editor
// (this crap really makes me lose all my will to live, but it's needed now)

import java.awt.event.*;
import javax.swing.*;
import javax.swing.filechooser.FileNameExtensionFilter;
import java.awt.Dimension;
import java.awt.GridLayout;

class Selector extends JPanel implements ActionListener {
    int selection;
    protected JButton b[];

    Selector(String s) // Split string into options
    {
        String splitz[] = splitTokens(s, ",");
        b = new JButton[splitz.length];

        setLayout(new GridLayout(splitz.length, 1, 1, 1));

        for (int i = 0; i < splitz.length; i++) {
            b[i] = new JButton(splitz[i]);
            b[i].setActionCommand(str(i + '0'));
            b[i].addActionListener(this);
            b[i].setHorizontalAlignment(SwingConstants.LEFT);

            add(b[i]);
        }

        selection = -1;
    }
    public void actionPerformed(ActionEvent e) {
        for (int i = 0; i < b.length; i++) {
            if (str(i + '0').equals(e.getActionCommand()))
                selection = i;
        }
    }
}

// Select from a list
int selector(String title, String opt) {
    JFrame frame = new JFrame(title);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setLocationRelativeTo(null);

    Selector s = new Selector(opt);
    s.setOpaque(true);
    frame.setContentPane(s);

    //Display the window.
    frame.pack();
    frame.setVisible(true);

    frame.setLocationRelativeTo(null); // About in the middle

    while (s.selection == -1) {
        frame.toFront(); // A bit of a kludge to force the window on top
        frame.repaint();
        try {
            Thread.sleep(200);
        } catch (Exception e) {};
    }

    frame.setVisible(false);

    System.gc(); // It'll leak anyway...
    return (s.selection);
}

final int LOADPIX = 0,
    LOADIMG = 1,
    SAVEIMG = 2,
    SAVETXT = 3,
    SAVEEMU = 4,
    SAVEFMT = 5,
    LOADFMT = 6;

// File selector
String fileselector(String dir, int mode) {
    JFileChooser fc = new JFileChooser(dir);

    fc.setPreferredSize(new Dimension(480, 500));
    fc.setDialogTitle("Select a File");

    if (mode == LOADPIX) // Show image files
        fc.setFileFilter(new FileNameExtensionFilter("Images (*.png,*.gif,*.jpg)",
            "png", "gif", "jpg", "jpeg"));
    if (mode == LOADIMG || mode == SAVEIMG)
        fc.setFileFilter(new FileNameExtensionFilter("Multipaint files (*.bin) or png (*.png)", "bin", "png", "jpg"));
    if (mode == SAVEEMU)
        fc.setFileFilter(new FileNameExtensionFilter("Export files (*." + g_expname + ") ", g_expname));
    if (mode == SAVETXT)
        fc.setFileFilter(new FileNameExtensionFilter("Export source (*.txt) ", "c", "asm", "txt"));
    if (mode == SAVEFMT || mode == LOADFMT)
        fc.setFileFilter(new FileNameExtensionFilter(g_formatname + " (*." + g_formatextension + ")", g_formatextension));

    if (mode <= LOADIMG || mode == LOADFMT)
        fc.setApproveButtonText("Load");
    if (mode == SAVEIMG)
        fc.setApproveButtonText("Save");
    if (mode == SAVETXT | mode == SAVEEMU || mode == SAVEFMT)
        fc.setApproveButtonText("Export");
    int returnVal = fc.showOpenDialog(null);

    if (returnVal == JFileChooser.APPROVE_OPTION) {
        // Save cwd for next time
        if (mode == LOADPIX)
            refpath = fc.getCurrentDirectory().getPath();
        else
            path = fc.getCurrentDirectory().getPath();

        File file = fc.getSelectedFile();
        return file.getPath();
    } else
        return null;
}