1 | package org.greenstone.gatherer.msm;
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2 | /**
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3 | *#########################################################################
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4 | *
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5 | * A component of the Gatherer application, part of the Greenstone digital
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6 | * library suite from the New Zealand Digital Library Project at the
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7 | * University of Waikato, New Zealand.
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8 | *
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9 | * <BR><BR>
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10 | *
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11 | * Author: John Thompson, Greenstone Digital Library, University of Waikato
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12 | *
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13 | * <BR><BR>
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14 | *
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15 | * Copyright (C) 1999 New Zealand Digital Library Project
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16 | *
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17 | * <BR><BR>
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18 | *
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19 | * This program is free software; you can redistribute it and/or modify
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20 | * it under the terms of the GNU General Public License as published by
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21 | * the Free Software Foundation; either version 2 of the License, or
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22 | * (at your option) any later version.
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23 | *
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24 | * <BR><BR>
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25 | *
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26 | * This program is distributed in the hope that it will be useful,
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27 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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28 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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29 | * GNU General Public License for more details.
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30 | *
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31 | * <BR><BR>
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32 | *
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33 | * You should have received a copy of the GNU General Public License
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34 | * along with this program; if not, write to the Free Software
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35 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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36 | *########################################################################
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37 | */
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38 | import java.awt.*;
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39 | import java.awt.event.*;
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40 | import java.io.*;
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41 | import javax.swing.*;
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42 | import javax.swing.filechooser.*;
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43 | import org.greenstone.gatherer.Gatherer;
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44 | import org.greenstone.gatherer.msm.MetadataSet;
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45 | import org.greenstone.gatherer.msm.MetadataSetManager;
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46 | import org.greenstone.gatherer.util.Utility;
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47 | /** A GUI component for allowing the user to export a metadata set, based on certain conditions, and to a certain file (not necessarily a .mds file).
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48 | * @author John Thompson, Greenstone Digital Library, University of Waikato
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49 | * @version 2.3
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50 | */
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51 | final public class ExportMDSPrompt
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52 | extends JDialog
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53 | implements ActionListener, KeyListener {
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54 | /** Is this an export prompt or an import one? */
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55 | private boolean export;
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56 | /** The file we wish to export the metadata set to. */
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57 | private File file = null;
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58 | /** The action the user has chosen from the dialog (either -1, if cancelled, or EXPORT). */
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59 | private int action = -1;
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60 | /** The button used to browse the local file system. */
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61 | private JButton browse_button = null;
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62 | /** Used to cancel the dialog. */
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63 | private JButton cancel_button = null;
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64 | /** Used to initiate the export, then dispose of the dialog. */
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65 | private JButton export_button = null;
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66 | /** The metadata sets available for export. */
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67 | private JComboBox sets = null;
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68 | /** The destination file name as a string. */
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69 | private JTextField file_name = null;
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70 | /** Ths button that, if selected, signifies you wish to export the metadata set with all values. */
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71 | private JToggleButton all_values = null;
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72 | /** The button that, if selected, signifies you wish to export the metadata set without any values (ie no mdv files). */
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73 | private JToggleButton no_values = null;
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74 | /** The button that, if selected, signifies you wish to export the metadata set with only those values that are subject nodes in the hierarchy. */
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75 | private JToggleButton structure_only = null;
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76 | /** A reference to the metadata set manager. */
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77 | private MetadataSetManager manager;
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78 | /** The default size for this dialog window. */
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79 | final static public Dimension EXPORT_SIZE = new Dimension(500,220);
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80 | /** The default size for this dialog window. */
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81 | final static public Dimension IMPORT_SIZE = new Dimension(500,120);
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82 | /** The default export action (there are several depending on how much information you wish to export). */
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83 | final static public int EXPORT = 0;
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84 | /** Constructor.
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85 | * @param manager A reference to the <strong>MetadataSetManager</strong>.
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86 | * @see org.greenstone.gatherer.Configuration
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87 | * @see org.greenstone.gatherer.util.Utility
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88 | */
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89 | public ExportMDSPrompt(MetadataSetManager manager, boolean export) {
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90 | super();
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91 | this.export = export;
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92 | // Creation
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93 | setModal(true);
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94 | if(export) {
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95 | setSize(EXPORT_SIZE);
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96 | setTitle(get("Export_Title"));
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97 | }
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98 | else {
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99 | setSize(IMPORT_SIZE);
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100 | setTitle(get("Import_Title"));
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101 | }
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102 | JPanel content_pane = (JPanel) getContentPane();
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103 | JPanel control_pane = new JPanel();
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104 | JLabel set_label = new JLabel(get("Export_Set"));
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105 | sets = new JComboBox(manager.getSets());
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106 | JLabel condition_label = new JLabel(get("Export_Conditions"));
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107 | JPanel condition_pane = new JPanel();
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108 | ButtonGroup condition_group = new ButtonGroup();
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109 | all_values = new JToggleButton(get("Export_All_Values"));
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110 | condition_group.add(all_values);
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111 | no_values = new JToggleButton(get("Export_No_Values"));
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112 | condition_group.add(no_values);
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113 | structure_only = new JToggleButton(get("Export_Subjects_Only"));
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114 | condition_group.add(structure_only);
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115 | all_values.setSelected(true);
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116 | JLabel file_label = new JLabel(get("Export_File"));
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117 | JPanel file_pane = new JPanel();
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118 | file_name = new JTextField(Utility.METADATA_DIR);
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119 | browse_button = new JButton(get("General.Browse"));
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120 | JPanel button_pane = new JPanel();
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121 | if(export) {
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122 | export_button = new JButton(get("File_Export"));
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123 | export_button.setEnabled(false);
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124 | }
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125 | else {
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126 | export_button = new JButton(get("File_Import"));
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127 | export_button.setEnabled(true);
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128 | }
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129 | cancel_button = new JButton(get("General.Cancel"));
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130 | // Listeners
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131 | browse_button.addActionListener(this);
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132 | cancel_button.addActionListener(this);
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133 | export_button.addActionListener(this);
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134 | file_name.addKeyListener(this);
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135 | // Layout
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136 | condition_pane.setLayout(new GridLayout(1,3));
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137 | condition_pane.add(all_values);
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138 | condition_pane.add(structure_only);
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139 | condition_pane.add(no_values);
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140 |
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141 | file_pane.setLayout(new BorderLayout());
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142 | file_pane.add(file_name, BorderLayout.CENTER);
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143 | file_pane.add(browse_button, BorderLayout.EAST);
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144 |
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145 | if(export) {
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146 | control_pane.setLayout(new GridLayout(6, 1));
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147 | control_pane.add(set_label);
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148 | control_pane.add(sets);
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149 | control_pane.add(condition_label);
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150 | control_pane.add(condition_pane);
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151 | control_pane.add(file_label);
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152 | control_pane.add(file_pane);
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153 | }
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154 | else {
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155 | control_pane.setLayout(new GridLayout(2,1));
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156 | control_pane.add(condition_label);
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157 | control_pane.add(condition_pane);
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158 | }
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159 |
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160 | button_pane.setBorder(BorderFactory.createEmptyBorder(5,0,0,0));
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161 | button_pane.setLayout(new GridLayout(1,2));
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162 | button_pane.add(export_button);
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163 | button_pane.add(cancel_button);
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164 |
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165 | content_pane.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
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166 | content_pane.setLayout(new BorderLayout());
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167 | content_pane.add(control_pane, BorderLayout.CENTER);
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168 | content_pane.add(button_pane, BorderLayout.SOUTH);
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169 | // Display
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170 | Dimension screen_size = Gatherer.config.screen_size;
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171 | setLocation((screen_size.width - getSize().width) / 2, (screen_size.height - getSize().height) / 2);
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172 | }
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173 | /** Whenever one of the buttons in the dialog is actioned this method is called to trigger the appropriate effects.
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174 | * @param event An <strong>ActionEvent</strong> containing information about the action performed.
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175 | * @see org.greenstone.gatherer.Gatherer
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176 | * @see org.greenstone.gatherer.msm.MDSFileFilter
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177 | * @see org.greenstone.gatherer.util.Utility
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178 | */
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179 | public void actionPerformed(ActionEvent event) {
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180 | if(event.getSource() == export_button) {
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181 | action = EXPORT;
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182 | dispose();
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183 | }
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184 | else if(event.getSource() == cancel_button) {
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185 | action = -1;
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186 | dispose();
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187 | }
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188 | else {
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189 | JFileChooser chooser = new JFileChooser(new File(Utility.METADATA_DIR));
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190 | javax.swing.filechooser.FileFilter filter = new MDSFileFilter();
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191 | chooser.setApproveButtonText(get("General.OK"));
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192 | chooser.setFileFilter(filter);
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193 | int returnVal = chooser.showSaveDialog(Gatherer.g_man);
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194 | if(returnVal == JFileChooser.APPROVE_OPTION) {
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195 | file = chooser.getSelectedFile();
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196 | if(file.getName().indexOf(".") == -1) {
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197 | file = new File(file.getName() + ".mds");
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198 | }
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199 | file_name.setText(file.getAbsolutePath());
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200 | export_button.setEnabled(true);
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201 | }
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202 | }
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203 | }
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204 | /** Show the prompt and get the user input.
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205 | * @return An <i>int</i> specifying what action the user has choosen.
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206 | */
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207 | public int display() {
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208 | show();
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209 | return action;
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210 | }
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211 | /** Get the current value of condition.
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212 | * @return The value as an <i>int</i>.
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213 | * @see org.greenstone.gatherer.msm.MetadataSet
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214 | */
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215 | public int getSelectedCondition() {
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216 | if(all_values.isSelected()) {
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217 | return MetadataSet.ALL_VALUES;
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218 | }
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219 | else if(no_values.isSelected()) {
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220 | return MetadataSet.NO_VALUES;
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221 | }
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222 | else {
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223 | return MetadataSet.SUBJECTS_ONLY;
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224 | }
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225 | }
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226 | /** Get the current value of file.
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227 | * @return The value as a <strong>File</strong>.
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228 | */
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229 | public File getSelectedFile() {
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230 | return file;
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231 | }
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232 | /** Get the current value of set.
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233 | * @return The value as a <strong>MetadataSet</strong>.
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234 | */
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235 | public MetadataSet getSelectedSet() {
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236 | return (MetadataSet) sets.getSelectedItem();
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237 | }
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238 | /** Any implementation of KeyListener must include this method so that we can be informed when a key has been pressed. In this case we ignore it.
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239 | * @param event A <strong>KeyEvent</strong> containing information about the key pressed.
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240 | */
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241 | public void keyPressed(KeyEvent event) {
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242 | }
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243 | /** Any implementation of KeyListener must include this method so that we can be informed once a key has been released. This is the earliest the VK code becomes stable and usable, so we will check if the file named in file_name can be written to and if so enable the export button.
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244 | * @param event A <strong>KeyEvent</strong> containing information about the key typed.
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245 | */
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246 | public void keyReleased(KeyEvent event) {
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247 | String pos_file = file_name.getText();
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248 | if(pos_file.indexOf(".") != -1) {
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249 | file = new File(file_name.getText());
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250 | if(file.canWrite() || !file.exists()) {
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251 | export_button.setEnabled(true);
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252 | }
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253 | else if(export) {
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254 | export_button.setEnabled(false);
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255 | }
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256 | }
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257 | }
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258 | /** Any implementation of KeyListener must include this method so that we can be informed when a key has been typed. In this case we ignore it.
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259 | * @param event A <strong>KeyEvent</strong> containing information about the key typed.
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260 | */
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261 | public void keyTyped(KeyEvent event) {
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262 | }
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263 |
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264 | private String get(String key) {
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265 | return get(key, null);
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266 | }
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267 | private String get(String key, String[] args) {
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268 | if(key.indexOf(".") == -1) {
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269 | key = "MSMPrompt." + key;
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270 | }
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271 | return Gatherer.dictionary.get(key, args);
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272 | }
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273 | }
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