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 | * <BR><BR>
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9 | *
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10 | * Author: Shaoqun Wu, Greenstone Digital Library, University of Waikato
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11 | *
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12 | * <BR><BR>
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13 | *
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14 | * Copyright (C) 2006 New Zealand Digital Library Project
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15 | *
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16 | * <BR><BR>
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17 | *
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18 | * This program is free software; you can redistribute it and/or modify
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19 | * it under the terms of the GNU General Public License as published by
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20 | * the Free Software Foundation; either version 2 of the License, or
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21 | * (at your option) any later version.
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22 | *
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23 | * <BR><BR>
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24 | *
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25 | * This program is distributed in the hope that it will be useful,
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26 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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27 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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28 | * GNU General Public License for more details.
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29 | *
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30 | * <BR><BR>
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31 | *
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32 | * You should have received a copy of the GNU General Public License
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33 | * along with this program; if not, write to the Free Software
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34 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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35 | *########################################################################
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36 | */
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37 | package org.greenstone.gatherer.gems;
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38 |
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39 | import javax.swing.table.*;
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40 | import javax.swing.JTable;
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41 | import java.awt.event.ActionListener;
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42 | import java.awt.event.ActionEvent;
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43 | import java.util.ArrayList;
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44 | import java.awt.Rectangle;
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45 | import javax.swing.JOptionPane;
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46 | import javax.swing.DefaultCellEditor;
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47 | import javax.swing.JTextField;
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48 | import javax.swing.ListSelectionModel;
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49 |
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50 | import org.greenstone.gatherer.Dictionary;
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51 |
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52 | public class AttributeTable
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53 | extends JTable
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54 | implements MetadataElementListener, MetadataSetListener, ActionListener {
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55 |
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56 | // self reference
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57 | JTable this_table;
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58 |
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59 | private ArrayList listeners = new ArrayList();
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60 | private JTextField metadata_value_text_field = new JTextField();
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61 | private boolean language_dependent;
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62 |
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63 | public AttributeTable(boolean lang_dependent){
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64 | super();
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65 | setRowHeight(20);
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66 | language_dependent = lang_dependent;
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67 |
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68 | metadata_value_text_field.setBorder(null);
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69 | DefaultCellEditor cellEditor = new DefaultCellEditor(metadata_value_text_field);
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70 | cellEditor.setClickCountToStart(1);
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71 | setDefaultEditor(String.class,cellEditor);
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72 | this_table = this;
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73 | setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
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74 | }
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75 |
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76 | /* not currently used */
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77 | public void actionPerformed(ActionEvent e){
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78 | String command = e.getActionCommand();
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79 |
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80 | if (command.equals(GEMSConstants.ADD_ATTRIBUTE)){
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81 | addAttribute();
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82 | return ;
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83 | }
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84 |
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85 | if (command.equals(GEMSConstants.DELETE_ATTRIBUTE)){
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86 | deleteAttribute();
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87 | }
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88 |
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89 | }
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90 |
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91 | public void addNewLanguage(String lang) {
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92 | AttributeTableModel model = (AttributeTableModel)getModel();
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93 | model.addNewLanguage(lang);
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94 | }
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95 |
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96 | public void metadataElementChanged(MetadataElementEvent mee){
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97 | MetadataElementModel model = mee.getMetadataElementModel();
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98 | if (model == null){ //this model has been deleted
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99 | setModel(new DefaultTableModel());
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100 | return;
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101 | }
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102 | populateAttributeTable(model);
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103 | }
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104 |
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105 | public void metadataSetChanged(MetadataSetEvent mse){
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106 | MetadataSetInfo info = mse.getMetadataSetInfo();
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107 | if (info == null){
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108 | setModel(new DefaultTableModel());
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109 | return;
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110 | }
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111 | populateAttributeTable(info);
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112 | }
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113 |
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114 | public void addAttributeListener(AttributeListener al){
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115 | if (!listeners.contains(al)){
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116 | listeners.add(al);
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117 | }
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118 | }
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119 |
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120 | public void removeAttributeListener(AttributeListener al){
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121 | listeners.remove(al);
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122 | }
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123 |
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124 | private void addAttribute(){
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125 | AttributeTableModel model = (AttributeTableModel)getModel();
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126 | model.addNewRow();
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127 | }
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128 |
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129 |
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130 | private void deleteAttribute(){
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131 | int index = getSelectedRow();
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132 | AttributeTableModel model = (AttributeTableModel)getModel();
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133 | model.deleteRow(index);
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134 | }
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135 |
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136 | private void populateAttributeTable(AttributeContainer container){
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137 | AttributeTableModel model = new AttributeTableModel(container, language_dependent);
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138 | setModel(model);
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139 | TableColumnModel tcm = getColumnModel();
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140 | if (language_dependent) {
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141 | tcm.getColumn(0).setPreferredWidth(100);
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142 | tcm.getColumn(1).setPreferredWidth(50);
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143 | tcm.getColumn(2).setPreferredWidth(350);
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144 | }
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145 | else {
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146 | tcm.getColumn(0).setPreferredWidth(100);
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147 | tcm.getColumn(1).setPreferredWidth(400);
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148 | }
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149 | }
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150 |
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151 |
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152 |
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153 | private void notifyListeners(Attribute attr){
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154 | AttributeEvent ae = new AttributeEvent(attr);
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155 | for(int i=0;i<listeners.size();i++){
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156 | AttributeListener al = (AttributeListener) listeners.get(i);
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157 | al.attributeChanged(ae);
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158 |
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159 | }
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160 | }
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161 |
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162 |
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163 |
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164 | protected class AttributeTableModel extends AbstractTableModel {
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165 |
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166 | AttributeContainer attribute_container;
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167 | ArrayList attributes;
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168 | boolean language_dependent;
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169 |
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170 | String[] column_names;
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171 |
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172 | public AttributeTableModel(AttributeContainer container, boolean lang_dependent) {
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173 | attribute_container = container;
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174 | language_dependent = lang_dependent;
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175 | if (language_dependent) {
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176 | attributes = container.getLanguageDependentAttributes();
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177 | column_names = GEMSConstants.LANG_DEPENDENT_ATTRIBUTES_COLUMN_NAMES;
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178 | }
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179 | else {
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180 | attributes = container.getAttributes();
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181 | column_names = GEMSConstants.ATTRIBUTES_COLUMN_NAMES;
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182 | }
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183 | }
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184 |
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185 | public int getRowCount(){
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186 | return attributes.size();
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187 | }
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188 |
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189 | public String getColumnName(int column){
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190 | return column_names[column];
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191 | }
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192 |
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193 | public Class getColumnClass(int columnIndex){
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194 | return String.class;
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195 | }
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196 | public int getColumnCount(){
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197 | return column_names.length;
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198 | }
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199 | public boolean isCellEditable(int row, int col) {
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200 | Attribute attr = (Attribute)attributes.get(row);
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201 | if (col == 0 && attr.isRequired()) return false;
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202 | return true;
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203 | }
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204 |
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205 | public Object getValueAt(int row, int column){
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206 | if (row < attributes.size()){
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207 | Attribute attr = (Attribute)attributes.get(row);
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208 | // String name = attr.getName();
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209 | // if (attr.isRequired()){
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210 | // name = "<html><body Color=blue>"+name+"</body></html>";
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211 | // }
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212 |
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213 | if (column == 0) return attr.getName();
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214 | if (language_dependent) {
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215 | if (column == 1) return attr.getLanguage();
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216 | if (column == 2) return attr.getValue();
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217 | }
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218 | else {
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219 | if (column == 1) return attr.getValue();
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220 | }
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221 | }
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222 | return null;
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223 | }
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224 |
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225 | public void setValueAt(Object value, int row, int column){
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226 | if (row < attributes.size() && attributes.size()>0 ){
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227 | Attribute attr = (Attribute)attributes.get(row);
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228 | if (attr.isRequired() && ((String)value).trim().equals("") && !getValueAt(row,column).equals("")) {
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229 | JOptionPane.showMessageDialog(null,Dictionary.get("GEMS.Attribute_Edition_Error_Message"), Dictionary.get("GEMS.Attribute_Edition_Error"),JOptionPane.ERROR_MESSAGE);
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230 | return;
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231 | }
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232 |
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233 | // TODO: check namespace conflict
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234 | if (column == 0) attr.setName((String)value);
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235 | else {
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236 | if (language_dependent) {
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237 | if (column == 1) attr.setLanguage((String)value);
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238 | else if (column == 2) attr.setValue((String)value);
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239 | }
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240 | else {
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241 | if (column == 1) attr.setValue((String)value);
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242 | }
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243 | }
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244 | notifyListeners(attr);
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245 |
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246 | /// check this stuff
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247 | if (attribute_container instanceof MetadataElementModel) {
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248 | if (attr.getName().trim().equals(GEMSConstants.NAME_ATTRIBUTE)) {
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249 | ((MetadataElementModel)attribute_container).setName((String)value);
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250 | }
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251 | } else if (attribute_container instanceof MetadataSetInfo) {
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252 | ((MetadataSetInfo)attribute_container).infoChanged();
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253 | }
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254 | }
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255 | }
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256 |
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257 | /** used only for language dependent attribute tables */
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258 | public void addNewLanguage(String lang)
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259 | {
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260 | if (!language_dependent) return;
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261 | int index = attribute_container.languageExists(lang);
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262 | if (index >=0){
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263 | this_table.getSelectionModel().setSelectionInterval(index,index);
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264 | Rectangle rect = this_table.getCellRect(index, 0, true);
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265 | this_table.scrollRectToVisible(rect);
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266 | }
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267 | else {
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268 | String [] attrNames = attribute_container.getLanguageDependentAttributeNames();
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269 | if (attrNames == null){
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270 | JOptionPane.showMessageDialog(null,Dictionary.get("GEMS.Add_Lang_Depend_Attr_Error_Message"),Dictionary.get("GEMS.Add_Lang_Depend_Attr_Error"),JOptionPane.ERROR_MESSAGE);
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271 | return ;
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272 | }
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273 | for(int i=0;i<attrNames.length;i++){
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274 | Attribute attr = new Attribute(attrNames[i].trim(),"", true);
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275 | attr.setLanguage(lang);
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276 | attributes.add(attr);
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277 | notifyListeners(attr);
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278 | }
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279 | fireTableDataChanged();
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280 | // first att from new lot
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281 | int first_new_att_index = attributes.size()-attrNames.length;
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282 | this_table.editCellAt(first_new_att_index, 2);
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283 | if (this_table.isEditing()) {
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284 | this_table.getEditorComponent().requestFocus();
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285 | }
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286 |
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287 | this_table.getSelectionModel().setSelectionInterval(attributes.size()-attrNames.length,attributes.size()-1);
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288 | Rectangle rect = this_table.getCellRect(attributes.size()-1, 0, true);
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289 | this_table.scrollRectToVisible(rect);
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290 | }
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291 | }
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292 |
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293 | /* not currently used */
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294 | public void addNewRow(){
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295 | Attribute attr = new Attribute();
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296 | attributes.add(attr);
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297 | fireTableDataChanged();
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298 | this_table.getSelectionModel().setSelectionInterval(attributes.size()-1,attributes.size()-1);
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299 | Rectangle rect = this_table.getCellRect(attributes.size()-1, 0, true);
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300 | this_table.scrollRectToVisible(rect);
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301 | }
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302 |
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303 | /* not currently used */
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304 | public void deleteRow(int index){
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305 | if (index < attributes.size() && index >=0){
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306 | Attribute attr = (Attribute)attributes.get(index);
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307 | if (attr.isRequired()){
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308 | JOptionPane.showMessageDialog(null,Dictionary.get("GEMS.Attribute_Deletion_Error_Message"), Dictionary.get("GEMS.Attribute_Deletion_Error"),JOptionPane.ERROR_MESSAGE);
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309 | return;
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310 | }
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311 |
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312 | // int result = JOptionPane.showOptionDialog(null, Dictionary.get("GEMS.Confirm_Removal", Dictionary.get("GEMS.Attribute") + " " + Dictionary.get("GEMS.Cannot_Undo")), Dictionary.get("GEMS.Confirm_Removal_Title"), JOptionPane.DEFAULT_OPTION, JOptionPane.QUESTION_MESSAGE,null,GEMSConstants.DIALOG_OPTIONS,GEMSConstants.DIALOG_OPTIONS[0] );
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313 |
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314 | //if (result !=JOptionPane.OK_OPTION) return;
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315 | notifyListeners(attr);
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316 | attributes.remove(index);
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317 | fireTableDataChanged();
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318 | }
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319 |
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320 | }
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321 |
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322 | }
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323 | }
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