[33053] | 1 | /**
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| 2 | *#########################################################################
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| 3 | *
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| 4 | * A component of the Gatherer application, part of the Greenstone digital
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| 5 | * library suite from the New Zealand Digital Library Project at the
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| 6 | * University of Waikato, New Zealand.
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| 7 | *
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| 8 | * Author: John Thompson, Greenstone Digital Library, University of Waikato
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| 9 | *
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| 10 | * Copyright (C) 1999 New Zealand Digital Library Project
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or modify
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| 13 | * it under the terms of the GNU General Public License as published by
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| 14 | * the Free Software Foundation; either version 2 of the License, or
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| 15 | * (at your option) any later version.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful,
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| 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 20 | * GNU General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, write to the Free Software
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| 24 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 25 | *########################################################################
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| 26 | */
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| 27 |
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| 28 | package org.greenstone.gatherer;
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| 29 |
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| 30 | import java.applet.*;
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| 31 | import java.awt.event.ActionEvent;
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| 32 | import java.awt.event.ActionListener;
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| 33 | import java.net.*;
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| 34 | import javax.swing.JApplet;
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| 35 |
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| 36 | import java.io.*;
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| 37 | import javax.swing.*;
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| 38 | import org.greenstone.gatherer.util.JarTools;
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| 39 | import org.greenstone.gatherer.util.UnzipTools;
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| 40 | import org.greenstone.gatherer.util.Utility;
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| 41 |
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| 42 |
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| 43 | public class GathererApplet4gs3 extends JApplet implements ActionListener
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| 44 | {
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| 45 | private Gatherer gatherer = null;
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| 46 | private String gsdl3_string = "";
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| 47 | private String library_url_string = "";
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| 48 | private String gliserver_url_string = "";
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| 49 |
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| 50 | protected String fullLibraryURL(String address)
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| 51 | {
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| 52 | String full_address = "";
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| 53 |
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| 54 | // make sure the URL has protocol, host, and file
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| 55 | if (address.startsWith("http:")) {
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| 56 | // the address has all the necessary components
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| 57 | full_address = address;
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| 58 | }
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| 59 | else if (address.startsWith("/")) {
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| 60 | // there is not protocol and host
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| 61 | URL document = getDocumentBase();
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| 62 | int port_no = document.getPort();
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| 63 |
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| 64 | String port = (port_no>0) ? ":" + port_no : "";
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| 65 | full_address = "http://" + document.getHost() + port + address;
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| 66 | }
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| 67 |
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| 68 | return full_address;
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| 69 | }
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| 70 |
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| 71 |
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| 72 | /* This is the entry point for the GLI applet */
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| 73 | public void init()
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| 74 | {
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| 75 | JarTools.initialise(this);
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| 76 |
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| 77 | // Check if the user has agreed to the requested security settings
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| 78 | try {
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| 79 | // Work-around to reduce number of
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| 80 | // 'Could not lock user prefs' error messages.
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| 81 | // Thanks to Walter Schatz from the java forums.
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| 82 | System.setProperty("java.util.prefs.syncInterval","2000000");
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| 83 | }
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| 84 | catch (Exception exception) {
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| 85 | getContentPane().add(new JLabel("Greenstone Librarian Interface Applet deactivated", JLabel.CENTER));
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| 86 | return;
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| 87 | }
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| 88 |
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| 89 | // Ensure platform specific LAF
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| 90 | try {
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| 91 | UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
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| 92 | }
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| 93 | catch (Exception exception) {
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| 94 | exception.printStackTrace();
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| 95 | }
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| 96 |
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| 97 | // Determine the GLI user directory path
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| 98 | String gli_user_directory_path = System.getProperty("user.home") + File.separator;
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| 99 | if (Utility.isWindows()) {
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| 100 | String windows_home_parameter = getParameter("windowsHome");
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| 101 | if (windows_home_parameter != null && !windows_home_parameter.equals("")) {
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| 102 | gli_user_directory_path = windows_home_parameter + File.separator + "GLI" + File.separator;
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| 103 | }
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| 104 | else {
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| 105 | gli_user_directory_path += "Application Data" + File.separator + "Greenstone" + File.separator + "GLI" + File.separator;
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| 106 | }
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| 107 | }
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| 108 | else {
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| 109 | gli_user_directory_path += ".gli" + File.separator;
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| 110 | }
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| 111 | Gatherer.setGLIUserDirectoryPath(gli_user_directory_path);
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| 112 |
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| 113 | // If we're running as an applet we don't have a local GLI, so use the user directory path as the GLI path
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| 114 | Gatherer.setGLIDirectoryPath(gli_user_directory_path);
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| 115 |
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| 116 | // Set some global variables so we know how we're running
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| 117 | Gatherer.isApplet = true;
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| 118 | String library_url_string = fullLibraryURL(getParameter("gwcgi"));
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| 119 | String gliserver_url_string = library_url_string + "/cgi-bin/gliserver.pl";
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| 120 | String[] args = { "-use_remote_greenstone",
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| 121 | "-gliserver_url", gliserver_url_string,
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| 122 | "-library_url", library_url_string,
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| 123 | "-gsdl3",
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| 124 | //"-debug",
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| 125 | };
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| 126 |
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| 127 | File collect_directory = new File(Gatherer.getCollectDirectoryPath());
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| 128 | if (!collect_directory.exists()) {
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| 129 | if (JarTools.isInJar("collect.zip")) {
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| 130 | // Dig out collect.zip from JAR file and unzip it (thereby
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| 131 | // creating collect directory and descendants.
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| 132 | // This is done to seed gsdl home folder with config files
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| 133 | // for documented example collections so "base this on
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| 134 | // existing collection" works
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| 135 | unzipFromJar("collect.zip", Gatherer.getGLIUserDirectoryPath());
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| 136 | }
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| 137 | else {
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| 138 | // Prepare an empty collect dir for use
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| 139 | if (!collect_directory.mkdir()) {
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| 140 | System.err.println("Warning: Unable to make directory: " + collect_directory);
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| 141 | }
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| 142 | }
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| 143 | }
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| 144 |
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| 145 | File metadata_directory = new File(Gatherer.getGLIMetadataDirectoryPath());
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| 146 | if (!metadata_directory.exists()) {
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| 147 | // dig out metadata.zip from JAR file and unzip it
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| 148 | unzipFromJar("metadata.zip", Gatherer.getGLIDirectoryPath());
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| 149 | }
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| 150 |
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| 151 | // Create an instance of the Gatherer class, which will parse the args and prepare the rest of the GLI
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| 152 | gatherer = new Gatherer(args);
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| 153 | // Create a button for the user to press to open the GLI GUI
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| 154 | JButton launch_GLI_button = new JButton("Launch Greenstone Librarian Interface ...");
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| 155 | launch_GLI_button.addActionListener(this);
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| 156 | getContentPane().add(launch_GLI_button);
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| 157 | }
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| 158 |
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| 159 |
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| 160 | public void start()
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| 161 | {
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| 162 | System.err.println("Start called");
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| 163 | }
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| 164 |
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| 165 |
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| 166 | public void stop()
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| 167 | {
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| 168 | System.err.println("Stop called");
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| 169 | }
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| 170 |
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| 171 |
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| 172 | public void destroy()
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| 173 | {
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| 174 | System.err.println("Destroy called");
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| 175 | gatherer.exit();
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| 176 | // bug that causes browser (Firefox to freeze) when trying to reload the applet
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| 177 | // gatherer = null;
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| 178 | System.err.println("Done gatherer exit.");
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| 179 | }
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| 180 |
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| 181 |
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| 182 | public void actionPerformed(ActionEvent e)
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| 183 | {
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| 184 | gatherer.openGUI();
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| 185 | }
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| 186 |
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| 187 |
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| 188 | /**
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| 189 | * Method which unzips a given metadata resoure.
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| 190 | * @param jar_zip_fname The name of the jar file as a <strong>String</strong>.
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| 191 | * @param dst_dir The destination directory for unzipping, also as a <strong>String</strong>.
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| 192 | * @see JarTools.extractFromJar(String, String, boolean)
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| 193 | */
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| 194 | static public void unzipFromJar(String jar_zip_fname, String dst_dir)
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| 195 | {
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| 196 | if (!dst_dir.endsWith(File.separator)) {
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| 197 | dst_dir += File.separator;
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| 198 | }
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| 199 |
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| 200 | JarTools.extractFromJar(jar_zip_fname, dst_dir, true);
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| 201 | UnzipTools.unzipFile(dst_dir + jar_zip_fname, dst_dir);
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| 202 | }
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| 203 | }
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