source: trunk/gli/src/org/greenstone/gatherer/GathererApplet.java@ 8204

/**
 *#########################################################################
 *
 * A component of the Gatherer application, part of the Greenstone digital
 * library suite from the New Zealand Digital Library Project at the
 * University of Waikato, New Zealand.
 *
 * Author: John Thompson, Greenstone Digital Library, University of Waikato
 *
 * Copyright (C) 1999 New Zealand Digital Library Project
 *
 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *########################################################################
 */

package org.greenstone.gatherer;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import java.net.*;
import javax.swing.JApplet;
import java.applet.*;

import java.awt.*;
import java.util.*;
import javax.swing.*;
import org.greenstone.gatherer.Configuration;
import org.greenstone.gatherer.feedback.ActionRecorderDialog;
import org.greenstone.gatherer.gui.GUIManager;
import org.greenstone.gatherer.gui.Splash;
import org.greenstone.gatherer.util.Utility;

public class GathererApplet extends JApplet implements ActionListener
{
    Gatherer gatherer;
    GUIManager g_man;
    Dimension size = new Dimension(800, 540);

    protected String fullLibraryURL(String address) 
    {
    String full_address = "";

        // make sure the URL has protocol, host, and file
        if (address.startsWith("http:")) {
            // the address has all the necessary components
        full_address = address;
        } 
    else if (address.startsWith("/")) {
            // there is not protocol and host
            URL document = getDocumentBase();
        int port_no = document.getPort();

            String port = (port_no>0) ? ":" + port_no : "";
            full_address = "http://" + document.getHost() + port  + address;
    }

    return full_address;
    }

    public void init()
    {
    try {
        // Work-around to reduce number of 
        // 'Could not lock user prefs' error messages.
        // Thanks to Walter Schatz from the java forums.
        System.setProperty("java.util.prefs.syncInterval","2000000");
    }

    catch (Exception exception) {
        // convenient way of finding out if user has agreed to
        // to requested security settings

        JLabel lab 
        = new JLabel("Greenstone Librarian Interface Applet deactivated",
                 JLabel.CENTER);
        getContentPane().add(lab);
        return;
    }

    // Ensure platform specific LAF
    try {
        UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
    }
    catch(Exception exception) {
        exception.printStackTrace();
    }

    String gwcgi = getParameter("gwcgi");
    String library_cgi = fullLibraryURL(gwcgi);
    int cgi_base_cut = library_cgi.lastIndexOf('/');
    String cgi_base = library_cgi.substring(0,cgi_base_cut+1);

    gatherer = new Gatherer();

    String gli_user_folder = Utility.getGLIUserFolder().toString();

    String[] args = { "-gsdl", gli_user_folder,
              "-library", library_cgi,
                    };

    GetOpt go = new GetOpt(args);

    if (go.feedback_enabled) {
        // If feedback is enabled, set up the recorder dialog.  
        // Use the default locale for now - this will be changed by the
        // Gatherer run method
        Locale currLocale = Locale.getDefault(); 
        ActionRecorderDialog dlg = new ActionRecorderDialog (currLocale);
        gatherer.feedback_enabled = true;
        gatherer.feedback_dialog = dlg;
    }
    
    Gatherer.isGsdlRemote = true;
    Gatherer.cgiBase = cgi_base;

    Utility.BASE_DIR = go.gsdl_path;
    if (!Utility.BASE_DIR.endsWith(File.separator)) {
        Utility.BASE_DIR += File.separator;
    }

    Utility.CACHE_DIR    = Utility.BASE_DIR + "cache"    + File.separator;
    Utility.HELP_DIR     = Utility.BASE_DIR + "help"     + File.separator;
    Utility.METADATA_DIR = Utility.BASE_DIR + "metadata" + File.separator;
    Utility.RECYCLE      = Utility.BASE_DIR + "recycle"  + File.separator;
    Utility.RES_DIR      = Utility.BASE_DIR + "resource" + File.separator;
    Utility.WELCOME_DIR  = Utility.BASE_DIR + "welcome"  + File.separator;

    Configuration.TEMPLATE_CONFIG_XML = "xml/configRemote.xml";
    Configuration.CONFIG_XML = "configRemote.xml";
    Configuration.GS3_CONFIG_XML = "config3Remote.xml";

    File gli_user_dir = new File(gli_user_folder);
    if (!gli_user_dir.exists()) {
        gli_user_dir.mkdirs();
    }

    File col_dir = new File(Utility.getCollectDir(go.gsdl_path));
    if (!col_dir.exists()) {
        col_dir.mkdir();
    }

    File metadata_directory = new File(Utility.METADATA_DIR);
    if (!metadata_directory.exists()) {
        // digout metadata.zip from JAR file and unzip it
        Utility.unzipFromJar(Utility.METADATA_ZIP,gli_user_folder);
    }

    
    File plug_dat = new File(Utility.BASE_DIR + "plugins.dat");
    if (!plug_dat.exists()) {
        Utility.extractFromJar("plugins.dat",Utility.BASE_DIR,false);
    }

    File class_dat = new File(Utility.BASE_DIR + "classifiers.dat");
    if (!class_dat.exists()) {
        Utility.extractFromJar("classifiers.dat",Utility.BASE_DIR,false);
    }
    

    g_man = gatherer.init(size, go.gsdl_path, go.gsdl3_path, 
                    go.exec_path, go.debug, go.perl_path, 
                    go.no_load, go.filename, go.site_name, 
                    go.servlet_path, go.mirroring_enabled, 
                    go.wget_version_str, go.wget_path);


    JButton bttn = new JButton("Launch Greenstone Librarian Interface ...");
    bttn.addActionListener(this);
    getContentPane().add(bttn);
    }



    public void start() 
    {
    System.err.println("Start called");
    }



    public void stop()
    {
    System.err.println("Stop called");

    }

    public void destroy()
    {
    System.err.println("Destroy called");
    gatherer.exit();
    System.err.println("Done gatherer exit.");
    }

    public void actionPerformed(ActionEvent e)
    {
    Splash splash = null;

    gatherer.run(size, splash, g_man);
    }
}