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.Utility;
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39 |
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40 |
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41 | public class GathererApplet extends JApplet implements ActionListener
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42 | {
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43 | private Gatherer gatherer = null;
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44 |
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45 |
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46 | protected String fullLibraryURL(String address)
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47 | {
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48 | String full_address = "";
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49 |
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50 | // make sure the URL has protocol, host, and file
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51 | if (address.startsWith("http:")) {
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52 | // the address has all the necessary components
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53 | full_address = address;
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54 | }
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55 | else if (address.startsWith("/")) {
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56 | // there is not protocol and host
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57 | URL document = getDocumentBase();
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58 | int port_no = document.getPort();
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59 |
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60 | String port = (port_no>0) ? ":" + port_no : "";
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61 | full_address = "http://" + document.getHost() + port + address;
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62 | }
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63 |
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64 | return full_address;
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65 | }
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66 |
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67 |
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68 | /* This is the entry point for the GLI applet */
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69 | public void init()
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70 | {
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71 | // Check if the user has agreed to the requested security settings
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72 | try {
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73 | // Work-around to reduce number of
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74 | // 'Could not lock user prefs' error messages.
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75 | // Thanks to Walter Schatz from the java forums.
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76 | System.setProperty("java.util.prefs.syncInterval","2000000");
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77 | }
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78 | catch (Exception exception) {
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79 | getContentPane().add(new JLabel("Greenstone Librarian Interface Applet deactivated", JLabel.CENTER));
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80 | return;
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81 | }
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82 |
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83 | // Ensure platform specific LAF
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84 | try {
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85 | UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
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86 | }
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87 | catch (Exception exception) {
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88 | exception.printStackTrace();
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89 | }
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90 |
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91 | // Ensure the GLI user directory exists
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92 | File gli_user_directory = Utility.setGLIUserFolder(getParameter("windowsHome"));
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93 | if (!gli_user_directory.exists() && !gli_user_directory.mkdirs()) {
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94 | System.err.println("Error: Unable to make directory: " + gli_user_directory.toString());
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95 | }
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96 |
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97 | // Set some global variables so we know how we're running
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98 | Gatherer.isApplet = true;
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99 | Gatherer.isGsdlRemote = true;
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100 | String library_cgi = fullLibraryURL(getParameter("gwcgi"));
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101 | Gatherer.cgiBase = library_cgi.substring(0, library_cgi.lastIndexOf('/') + 1);
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102 |
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103 | // String debug_param = getParameter("debug");
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104 | // if ((debug_param != null) && (debug_param.matches("true"))) {
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105 | // go.debug = true;
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106 | // }
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107 |
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108 | String[] args = { "-gsdl", gli_user_directory.toString(),
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109 | "-library_url", library_cgi,
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110 | };
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111 |
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112 | // Create an instance of the Gatherer class, which will parse the args and prepare the rest of the GLI
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113 | gatherer = new Gatherer(args);
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114 |
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115 | // Create a button for the user to press to open the GLI GUI
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116 | JButton launch_GLI_button = new JButton("Launch Greenstone Librarian Interface ...");
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117 | launch_GLI_button.addActionListener(this);
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118 | getContentPane().add(launch_GLI_button);
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119 | }
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120 |
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121 |
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122 |
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123 | public void start()
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124 | {
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125 | System.err.println("Start called");
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126 | }
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127 |
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128 |
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129 |
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130 | public void stop()
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131 | {
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132 | System.err.println("Stop called");
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133 |
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134 | }
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135 |
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136 | public void destroy()
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137 | {
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138 | System.err.println("Destroy called");
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139 | gatherer.exit();
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140 | System.err.println("Done gatherer exit.");
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141 | }
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142 |
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143 |
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144 | public void actionPerformed(ActionEvent e)
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145 | {
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146 | gatherer.openGUI();
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147 |
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148 | // If there was an open collection last session, reopen it
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149 | if (Gatherer.open_collection_file_path != null) {
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150 | Gatherer.c_man.loadCollection(Gatherer.open_collection_file_path);
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151 | }
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152 | }
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153 | }
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