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 | package org.greenstone.gatherer.cdm;
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28 |
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29 | import java.awt.BorderLayout;
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30 | import java.awt.Color;
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31 | import java.awt.Component;
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32 | import java.awt.Dimension;
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33 | import java.awt.event.ActionEvent;
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34 | import java.awt.event.ActionListener;
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35 | import java.io.File;
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36 | import java.util.ArrayList;
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37 |
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38 | import javax.swing.BorderFactory;
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39 | import javax.swing.BoxLayout;
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40 | import javax.swing.JCheckBox;
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41 | import javax.swing.JComboBox;
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42 | import javax.swing.JComponent;
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43 | import javax.swing.JOptionPane;
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44 | import javax.swing.JPanel;
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45 | import javax.swing.JScrollPane;
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46 |
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47 | import org.greenstone.gatherer.Configuration;
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48 | import org.greenstone.gatherer.Dictionary;
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49 | import org.greenstone.gatherer.Gatherer;
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50 | import org.greenstone.gatherer.collection.CollectionManager;
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51 | import org.greenstone.gatherer.gui.DesignPaneHeader;
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52 | import org.greenstone.gatherer.gui.GComboBox;
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53 | import org.greenstone.gatherer.metadata.MetadataElement;
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54 | import org.greenstone.gatherer.metadata.MetadataSet;
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55 | import org.greenstone.gatherer.metadata.MetadataSetManager;
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56 | import org.greenstone.gatherer.util.Utility;
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57 |
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58 | /**
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59 | * This manager implements the "Depositor Metadata" section in GLI Format Panel, where
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60 | * users can customize which metadata elements will be used to describe an item when deposited in the Depositor.
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61 | *
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62 | * @author Anna Huang, Greenstone Digital Library, University of Waikato
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63 | * @version 1.0
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64 | */
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65 | public class DepositorMetadataManager {
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66 | /** Display controls of the element */
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67 | static private Dimension LABEL_SIZE = new Dimension(150, 15);
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68 | static private Dimension ROW_SIZE = new Dimension(400, 20);
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69 | static private Dimension MAX_ROW_SIZE = new Dimension(1000, 30);
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70 |
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71 | /** Available types, corresponds to the HTML input types */
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72 | static private String[] TYPEOPTIONS = new String[]{"text", "textarea"};
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73 | /** Default elements to be used in Depositor */
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74 | static private String DEFAULT_METADATA_ELEMENTS = "dc.Title, dc.Creator, dc.Description";
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75 | /** Definition attribute of a metadata element */
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76 | static private String DEFINITION = "definition";
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77 |
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78 | /** Display controls */
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79 | private Control controls;
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80 | /** List of MetadataElementEntry objects, each represents a metadata element */
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81 | private ArrayList metadata_checklist_model = null;
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82 | /** Collection configuration file manager */
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83 | private CollectionMetaManager collmeta_manager = CollectionDesignManager.collectionmeta_manager;
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84 |
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85 | public DepositorMetadataManager() {
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86 | }
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87 |
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88 | /** Destructor. */
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89 | public void destroy() {
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90 | if (controls != null) {
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91 | controls.destroy();
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92 | controls = null;
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93 | }
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94 | if(metadata_checklist_model != null) {
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95 | metadata_checklist_model.clear();
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96 | metadata_checklist_model = null;
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97 | }
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98 | }
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99 |
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100 | public Control getControls() {
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101 | if (controls == null) {
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102 | controls = new DepositorControl();
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103 | }
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104 | return controls;
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105 | }
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106 |
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107 | /** Called when the detail mode has changed which in turn may cause several design elements to be available/hidden
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108 | * @param mode the new mode as an int
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109 | */
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110 | public void modeChanged(int mode) {
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111 | }
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112 |
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113 | /**
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114 | * The implementation of this display control is similar to the <code>ArgumentConfiguration</code>,
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115 | * where each component in the central panel is another JPanel component consists of a checkbox and a drop down list.
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116 | */
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117 | private class DepositorControl
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118 | extends JPanel
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119 | implements Control {
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120 |
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121 | private JPanel central_pane = null;
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122 |
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123 | public DepositorControl() {
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124 | super();
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125 | this.setComponentOrientation(Dictionary.getOrientation());
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126 | JPanel header_panel = new DesignPaneHeader("CDM.GUI.DepositorMetadata", "depositormetadatasettings");
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127 |
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128 | // load all possible metadata sets, and existing configuration
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129 | buildModel();
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130 |
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131 | central_pane = new JPanel();
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132 | central_pane.setComponentOrientation(Dictionary.getOrientation());
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133 | central_pane.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
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134 | central_pane.setLayout(new BoxLayout(central_pane, BoxLayout.Y_AXIS));
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135 |
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136 | // build the central pane, ie. create gui component for each metadata element
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137 | buildPane();
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138 |
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139 | JPanel collection_checklist_pane = new JPanel();
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140 | collection_checklist_pane.setComponentOrientation(Dictionary.getOrientation());
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141 | collection_checklist_pane.setBorder(BorderFactory.createEmptyBorder(5,0,0,0));
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142 | collection_checklist_pane.setLayout(new BorderLayout());
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143 | collection_checklist_pane.add(new JScrollPane(central_pane), BorderLayout.CENTER);
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144 |
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145 | setBorder(BorderFactory.createEmptyBorder(0,5,0,0));
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146 | setLayout(new BorderLayout());
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147 | add(header_panel, BorderLayout.NORTH);
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148 | add(collection_checklist_pane, BorderLayout.CENTER);
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149 | }
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150 |
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151 | public void destroy() {
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152 | }
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153 |
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154 | public void gainFocus() {
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155 | }
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156 |
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157 | public void loseFocus() {
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158 | StringBuffer converted_javascript = new StringBuffer();
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159 |
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160 | // get currently selected metadata elements and create the javascript associative array variable
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161 | if (metadata_checklist_model != null) {
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162 | int size = metadata_checklist_model.size();
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163 | for(int i = 0; i < size; i++) {
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164 | MetadataElementEntry entry = (MetadataElementEntry) metadata_checklist_model.get(i);
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165 |
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166 | if (entry.isSelected()) {
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167 | StringBuffer element = new StringBuffer();
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168 | element.append("{\"name\":\"").append(entry.name).append("\",");
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169 | element.append("\"label\":\"").append(entry.label).append("\",");
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170 | element.append("\"tooltip\":\"").append(entry.name).append(": ").append(entry.tooltip).append("\",");
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171 | element.append("\"type\":\"").append(entry.getType()).append("\"}");
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172 | if(converted_javascript.length() != 0) {
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173 | converted_javascript.append(", ");
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174 | }
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175 | converted_javascript.append(element);
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176 | element = null;
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177 | }
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178 | }
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179 |
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180 | // if none of the elements were selected, use the default setting
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181 | if (converted_javascript.length() == 0) {
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182 | System.err.println("Error: DepositorMetadataMananger should have at least one selected metadata element.");
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183 | }
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184 |
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185 | // save to the configuration file
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186 | CollectionMeta depositor_metadata_meta = collmeta_manager.getMetadatum("depositormetadata", true);
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187 | depositor_metadata_meta.setValue(converted_javascript.toString());
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188 | }
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189 | }
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190 |
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191 | private void buildModel()
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192 | {
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193 | metadata_checklist_model = new ArrayList();
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194 | String current_coll_name = CollectionManager.getLoadedCollectionName();
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195 |
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196 | // get the elements that have already been used in depositor
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197 | // add the "depositormetadata" meta if not found in the configuration file
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198 | CollectionMeta depositor_metadata_meta = collmeta_manager.getMetadatum("depositormetadata", true);
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199 | String selected_metadata_javascript = depositor_metadata_meta.getValue(true);
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200 |
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201 | // load all MDSets in the collection, ie. .mds files in the collection's metadata directory
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202 | String file_name = Gatherer.getCollectDirectoryPath() + File.separator + current_coll_name + File.separator + "metadata";
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203 | ArrayList metadata_sets = MetadataSetManager.listMetadataSets(new File(file_name));
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204 | if (metadata_sets != null) {
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205 | // unload the ex mds
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206 | for (int i = 0, j = metadata_sets.size(); i < j; i++) {
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207 | if (((MetadataSet) metadata_sets.get(i)).getNamespace().equals("ex")) {
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208 | metadata_sets.remove(i);
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209 | break;
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210 | }
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211 | }
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212 | }
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213 |
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214 | if (metadata_sets == null) {
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215 | metadata_sets = new ArrayList();
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216 | }
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217 | if (metadata_sets.size() == 0) {
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218 | // load dublin core
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219 | file_name = org.greenstone.gatherer.gems.MetadataSetManager.getGLIMetadataDirectoryPath();
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220 | file_name += "dublin.mds";
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221 | File dublin_mds_file = new File(file_name);
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222 | if (dublin_mds_file.exists()) {
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223 | MetadataSetManager.loadMetadataSet(dublin_mds_file);
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224 | MetadataSet dc = MetadataSetManager.getMetadataSet("dc");
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225 | metadata_sets.add(dc);
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226 | }
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227 | }
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228 | // if we are still empty :-(
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229 | if (metadata_sets.size() == 0) {
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230 | System.err.println("Error: DepositorMetadataMananger can't find any valid metadata set files.");
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231 | return;
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232 | }
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233 |
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234 | // load all the metadata elements
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235 | for (int i = 0, j = metadata_sets.size(); i < j; i++) {
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236 | MetadataSet metadata_set = (MetadataSet) metadata_sets.get(i);
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237 | ArrayList elements = metadata_set.getMetadataSetElements();
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238 |
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239 | for (int k = 0; elements != null && k < elements.size(); k++) {
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240 | MetadataElement element = (MetadataElement) elements.get(k);
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241 | // all names are language independent at the moment.
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242 | MetadataElementEntry entry = new MetadataElementEntry (element.getFullName(), element.getName(), false);
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243 | entry.setToolTip(element.getAttribute(DEFINITION, "en"));
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244 | metadata_checklist_model.add(entry);
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245 | }
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246 | }
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247 |
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248 | if (!selected_metadata_javascript.equals("")) {
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249 | for (int i = 0, j = metadata_checklist_model.size(); i < j; i++) {
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250 | MetadataElementEntry entry = (MetadataElementEntry) metadata_checklist_model.get(i);
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251 |
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252 | String temp = "\"name\":\"" + entry.name + "\"";
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253 | if (selected_metadata_javascript.indexOf(temp) != -1) {
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254 | entry.setSelected(true);
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255 | entry.type = getValueFromJSAssociatedArray(selected_metadata_javascript, entry.name, "type");
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256 | }
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257 | temp = null;
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258 | }
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259 | } else {
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260 | // use default elements
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261 | for (int i = 0, j = metadata_checklist_model.size(); i < j; i++) {
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262 | MetadataElementEntry entry = (MetadataElementEntry) metadata_checklist_model.get(i);
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263 | if (DEFAULT_METADATA_ELEMENTS.indexOf(entry.name) != -1) {
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264 | entry.setSelected(true);
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265 | entry.type = TYPEOPTIONS[0];
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266 | }
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267 | }
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268 | }
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269 | }
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270 |
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271 | private void buildPane() {
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272 | // use different background color for two adjacent metadata sets
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273 | String current_namespace = null;
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274 | String current_bgcolor_name = null;
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275 | for (int i = 0, j = metadata_checklist_model.size(); i < j; i++) {
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276 | MetadataElementEntry entry = (MetadataElementEntry) metadata_checklist_model.get(i);
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277 |
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278 | if (current_namespace == null) {
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279 | current_namespace = entry.namespace;
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280 | current_bgcolor_name = "coloring.collection_tree_background";
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281 | } else {
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282 | if (!entry.namespace.equals(current_namespace)) {
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283 | current_namespace = entry.namespace;
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284 | current_bgcolor_name = (current_bgcolor_name == "coloring.collection_tree_background") ? "coloring.collection_heading_background" : "coloring.collection_tree_background";
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285 | }
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286 | }
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287 |
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288 | if (entry.getGUIControl() == null) {
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289 | MetadataElementControl element_control = entry.initGUIControl(current_bgcolor_name);
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290 | central_pane.add(element_control, BorderLayout.NORTH);
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291 | }
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292 | }
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293 |
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294 | }
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295 |
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296 | /**
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297 | * Retrieve the value for the specified element in the given javascript associative array expression
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298 | *
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299 | * @param text
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300 | * @param identifier
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301 | * @param elem_name
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302 | * @return
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303 | */
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304 | private String getValueFromJSAssociatedArray(String text, String identifier, String elem_name) {
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305 | int p = text.indexOf(elem_name, text.indexOf(identifier));
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306 | if (p == -1) {
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307 | return null;
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308 | }
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309 | p = text.indexOf("\":\"", p);
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310 | if (p == -1) {
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311 | return null;
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312 | }
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313 | p += 3;
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314 |
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315 | return text.substring(p, text.indexOf("\"", p));
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316 | }
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317 | }
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318 |
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319 | private class MetadataElementControl extends JPanel {
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320 |
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321 | private JCheckBox enabled = null;
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322 | private JComponent value_control = null;
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323 |
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324 | public MetadataElementControl (MetadataElementEntry entry, String background_color_name) {
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325 |
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326 | this.setComponentOrientation(Dictionary.getOrientation());
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327 | String tip = "<html>" + entry.tooltip + "</html>";
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328 | tip = Utility.formatHTMLWidth(tip, 80);
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329 |
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330 | setBackground(Configuration.getColor(background_color_name, false));
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331 | setBorder(BorderFactory.createEmptyBorder(0,0,0,0));
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332 | setLayout(new BorderLayout());
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333 | setPreferredSize(ROW_SIZE);
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334 | setMaximumSize(MAX_ROW_SIZE);
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335 |
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336 | // the checkbox component
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337 | enabled = new JCheckBox(entry.name);
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338 | enabled.setComponentOrientation(Dictionary.getOrientation());
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339 | enabled.setSelected(entry.selected);
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340 | enabled.setOpaque(false);
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341 | enabled.setPreferredSize(LABEL_SIZE);
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342 | enabled.setToolTipText(entry.tooltip);
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343 | add(enabled, BorderLayout.LINE_START);
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344 |
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345 | // the drop down list component
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346 | ArrayList option_list = new ArrayList();
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347 | for (int i = 0; i < TYPEOPTIONS.length; i++) {
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348 | option_list.add(TYPEOPTIONS[i]);
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349 | }
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350 | value_control = new GComboBox(option_list.toArray(), false, false);
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351 | value_control.setComponentOrientation(Dictionary.getOrientation());
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352 | selectValue((JComboBox)value_control, entry.type);
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353 | value_control.setOpaque(true);
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354 | if (entry.selected) {
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355 | value_control.setBackground(Color.white);
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356 | value_control.setEnabled(true);
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357 | } else {
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358 | value_control.setBackground(Color.lightGray);
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359 | value_control.setEnabled(false);
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360 | value_control.setVisible(false);
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361 | }
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362 | add(value_control, BorderLayout.CENTER);
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363 |
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364 | enabled.addActionListener(new EnabledListener(value_control));
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365 | }
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366 |
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367 | private boolean selectValue(JComboBox combobox, String target) {
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368 | if (target == null) {
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369 | combobox.setSelectedIndex(0);
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370 | return false;
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371 | }
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372 |
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373 | for (int i = 0; i < combobox.getItemCount(); i++) {
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374 | if (combobox.getItemAt(i).toString().equals(target)) {
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375 | combobox.setSelectedIndex(i);
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376 | return true;
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377 | }
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378 | }
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379 | return false;
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380 | }
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381 |
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382 | private class EnabledListener
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383 | implements ActionListener {
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384 | private JComponent target = null;
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385 |
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386 | public EnabledListener(JComponent target) {
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387 | this.target = target;
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388 | }
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389 |
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390 | public void actionPerformed(ActionEvent event) {
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391 | JCheckBox source = (JCheckBox)event.getSource();
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392 |
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393 | // check at least one of the elements should be ticked
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394 | checkTickedElements(source);
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395 |
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396 | // update the status of the drop-down list component associated with the current checkbox
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397 | if (this.target == null) {
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398 | return;
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399 | }
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400 |
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401 | if(source.isSelected()) {
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402 | target.setBackground(Color.white);
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403 | target.setEnabled(true);
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404 | target.setVisible(true);
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405 | }
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406 | else {
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407 | target.setBackground(Color.lightGray);
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408 | target.setEnabled(false);
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409 | target.setVisible(false);
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410 | }
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411 | }
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412 |
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413 | private void checkTickedElements(JCheckBox source) {
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414 | if (source.isSelected()) {
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415 | return;
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416 | }
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417 |
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418 | boolean b = false;
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419 | for (int i = 0, j = metadata_checklist_model.size(); i < j; i++) {
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420 | if (((MetadataElementEntry) metadata_checklist_model.get(i)).gui_object.enabled.isSelected()) {
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421 | b = true;
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422 | break;
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423 | }
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424 | }
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425 |
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426 | // there must be at least one element selected in the list
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427 | if (b == false) {
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428 | Object[] options = {Dictionary.get("General.OK")};
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429 | JOptionPane.showOptionDialog(Gatherer.g_man, Dictionary.get("CDM.DepositorMetadataManager.Warning"), Dictionary.get("General.Warning"), JOptionPane.DEFAULT_OPTION, JOptionPane.WARNING_MESSAGE, null, options, options[0]);
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430 |
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431 | source.setSelected(true);
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432 | }
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433 | }
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434 | }
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435 |
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436 | }
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437 |
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438 | private class MetadataElementEntry implements Comparable {
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439 | /** namespace, used to distinguish different metadata sets and use different colors when displaying */
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440 | String namespace = null;
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441 | /** identifier, with namespace */
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442 | String name = null;
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443 | /** language independent label, without namespace, used for display in the depositor web page, eg. Title */
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444 | String label = null;
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445 | /** type of the element: text or textarea */
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446 | String type = null;
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447 | /** description of the element, used in web page */
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448 | String tooltip = null;
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449 | /** whether current element is selected or not */
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450 | boolean selected ;
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451 | /** GUI component object associated with this element */
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452 | MetadataElementControl gui_object = null;
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453 |
|
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454 | /**
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455 | * Constructor
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456 | * @param name Language independent identifier of the element with namespace, eg. dc.Title
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457 | * @param label Language independent label of the element, without namespace, eg. Title
|
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458 | * @param selected Whether the current element has been selected as depositor metadata element
|
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459 | */
|
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460 | public MetadataElementEntry(String name, String label, boolean selected) {
|
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461 | this.name = name;
|
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462 | this.label = label;
|
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463 | this.selected = selected;
|
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464 |
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465 | if (name.indexOf(".") != -1) {
|
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466 | namespace = name.substring(0, name.indexOf("."));
|
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467 | }
|
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468 | }
|
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469 |
|
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470 | /**
|
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471 | * Initiate the <code>MetadataElementControl<code> GUI component object associated with this element, with the specified background color
|
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472 | * @param background_color_name System configured color name for the background, eg. "coloring.collection_heading_background", or "coloring.collection_tree_background"
|
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473 | * @return the initialized component object
|
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474 | */
|
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475 | public MetadataElementControl initGUIControl (String background_color_name) {
|
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476 | gui_object = new MetadataElementControl(this, background_color_name);
|
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477 | return gui_object;
|
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478 | }
|
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479 |
|
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480 | /**
|
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481 | * Get the associated GUI component
|
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482 | * @return
|
---|
483 | */
|
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484 | public MetadataElementControl getGUIControl() {
|
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485 | return gui_object;
|
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486 | }
|
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487 |
|
---|
488 | /**
|
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489 | * Set selected
|
---|
490 | * @param b
|
---|
491 | */
|
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492 | public void setSelected(boolean b) {
|
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493 | this.selected = b;
|
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494 | }
|
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495 |
|
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496 | public boolean isSelected() {
|
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497 | return gui_object.enabled.isSelected();
|
---|
498 | }
|
---|
499 |
|
---|
500 | /**
|
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501 | * Get the selected type for the element
|
---|
502 | * @return type
|
---|
503 | */
|
---|
504 | public String getType() {
|
---|
505 | return ((JComboBox) gui_object.value_control).getSelectedItem().toString();
|
---|
506 | }
|
---|
507 |
|
---|
508 | public void setToolTip (String tip) {
|
---|
509 | if (tip == null) {
|
---|
510 | tooltip = "";
|
---|
511 | return;
|
---|
512 | }
|
---|
513 | this.tooltip = tip;
|
---|
514 | }
|
---|
515 |
|
---|
516 | public int compareTo(Object obj) {
|
---|
517 | return compareTo((MetadataElementEntry) obj);
|
---|
518 | }
|
---|
519 |
|
---|
520 | public int compareTo(MetadataElementEntry obj) {
|
---|
521 | return this.name.compareTo(obj.name);
|
---|
522 | }
|
---|
523 |
|
---|
524 | }
|
---|
525 |
|
---|
526 | }
|
---|