/*
* Jalview - A Sequence Alignment Editor and Viewer
* Copyright (C) 2005 AM Waterhouse, J Procter, G Barton, M Clamp, S Searle
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
*/
package jalview.bin;

import jalview.appletgui.AlignFrame;

import jalview.datamodel.*;

import jalview.io.*;

import java.applet.*;

import java.awt.*;
import java.awt.event.*;


public class JalviewLite extends Applet {
    static int lastFrameX = 200;
    static int lastFrameY = 200;
    static Applet applet;
    boolean fileFound = true;
    String file = "No file";
    Button launcher = new Button("Start Jalview");

    public void init() {
        applet = this;
        this.setBackground(Color.white);

        file = getParameter("file");

        if (file != null) {
            add(launcher);
            file = applet.getCodeBase() + file;
            launcher.addActionListener(new java.awt.event.ActionListener() {
                    public void actionPerformed(ActionEvent e) {
                        String format = jalview.io.IdentifyFile.Identify(file,
                                "URL");
                        LoadFile(file, "URL", format);
                    }
                });
        } else {
            file = "NO FILE";
            fileFound = false;
        }
    }

    public static void showURL(String url) {
        try {
            applet.getAppletContext().showDocument(new java.net.URL(url),
                "HELP_WINDOW");
        } catch (Exception ex) {
        }
    }

    public void LoadFile(String file, String protocol, String format) {
        LoadingThread loader = new LoadingThread(file, protocol, format, this);
        loader.start();
    }

    public static void addFrame(final Frame frame, String title, int width,
        int height) {
        frame.setLocation(lastFrameX, lastFrameY);
        lastFrameX += 40;
        lastFrameY += 40;
        frame.setSize(width, height);
        frame.setTitle(title);
        frame.addWindowListener(new WindowAdapter() {
                public void windowClosing(WindowEvent e) {
                    frame.dispose();
                }
            });
        frame.setVisible(true);
    }

    public void paint(Graphics g) {
        if (!fileFound) {
            g.setColor(new Color(200, 200, 200));
            g.setColor(Color.cyan);
            g.fillRect(0, 0, getSize().width, getSize().height);
            g.setColor(Color.red);
            g.drawString("Jalview can't open file", 5, 15);
            g.drawString("\"" + file + "\"", 5, 30);
        }
    }

    class LoadingThread extends Thread {
        String file;
        String protocol;
        String format;
        JalviewLite jlapplet;

        public LoadingThread(String file, String protocol, String format,
            JalviewLite applet) {
            this.file = file;
            this.protocol = protocol;
            this.format = format;
            this.jlapplet = applet;
        }

        public void run() {
            SequenceI[] sequences = null;
            sequences = FormatAdapter.readFile(file, protocol, format);

            if ((sequences != null) && (sequences.length > 0)) {
                AlignFrame af = new AlignFrame(new Alignment(sequences),
                        jlapplet);
                addFrame(af, file, AlignFrame.NEW_WINDOW_WIDTH,
                    AlignFrame.NEW_WINDOW_HEIGHT);
                af.statusBar.setText("Successfully loaded file " + file);
            } else {
                fileFound = false;
                remove(launcher);
                repaint();
            }
        }
    }
}