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 | * Copyright (C) 1999 New Zealand Digital Library Project
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9 | *
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10 | * This program is free software; you can redistribute it and/or modify
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11 | * it under the terms of the GNU General Public License as published by
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12 | * the Free Software Foundation; either version 2 of the License, or
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13 | * (at your option) any later version.
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14 | *
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15 | * This program is distributed in the hope that it will be useful,
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16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 | * GNU General Public License for more details.
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19 | *
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20 | * You should have received a copy of the GNU General Public License
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21 | * along with this program; if not, write to the Free Software
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22 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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23 | *########################################################################
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24 | */
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25 |
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26 | package org.greenstone.gatherer.gui;
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27 |
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28 | // for RSyntaxTextArea editor's search functionality:
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29 | import org.fife.ui.rtextarea.SearchEngine;
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30 | import org.fife.ui.rtextarea.SearchContext;
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31 |
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32 | import org.greenstone.gatherer.Configuration;
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33 | import org.greenstone.gatherer.Dictionary;
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34 | import org.greenstone.gatherer.Gatherer;
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35 | import org.greenstone.gatherer.util.StaticStrings;
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36 | import org.greenstone.gatherer.util.Utility;
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37 | import org.greenstone.gatherer.util.XMLTools;
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38 |
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39 | import org.w3c.dom.*;
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40 |
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41 | import java.io.File;
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42 | import java.io.IOException;
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43 |
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44 | import java.awt.*;
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45 | import java.awt.event.*;
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46 | import java.util.*;
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47 | import javax.swing.*;
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48 | import javax.swing.border.*;
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49 | import javax.swing.event.*;
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50 |
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51 |
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52 | public class ConfigFileEditor extends ModalDialog
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53 | implements ActionListener, DocumentListener
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54 | {
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55 | public final File config_file;
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56 |
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57 | private GLIButton cancel_button = null;
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58 | private GLIButton save_button = null;
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59 | private NumberedJTextArea editor = null;
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60 | private JTextArea editor_msgarea;
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61 |
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62 |
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63 | // https://github.com/bobbylight/RSyntaxTextArea/wiki/Example:-Using-Find-and-Replace
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64 | final private JTextField searchField;
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65 | private JCheckBox regexCB;
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66 | private JCheckBox matchCaseCB;
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67 | private JButton nextButton;
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68 | private JButton prevButton;
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69 |
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70 | //private final String DEFAULT_PROCESSING_INSTRUCTION = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>";
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71 |
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72 | private static final Dimension SIZE = new Dimension(850,550);
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73 |
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74 | public ConfigFileEditor() {
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75 |
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76 | super(Gatherer.g_man, true);
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77 | setModal(true);
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78 | setSize(SIZE);
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79 |
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80 | String collection_folder_path = Gatherer.getCollectDirectoryPath();
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81 | String collectionName = Gatherer.c_man.getCollection().getName(); // we won't be in this constructor if collection is null.
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82 | this.config_file = new File(collection_folder_path + File.separator + collectionName, Utility.CONFIG_GS3_FILE); // col config editing is a GS3 feature
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83 |
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84 |
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85 | // Most of the validation_msg_panel code is from Format4gs3Manager.java
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86 | JPanel validation_msg_panel = new JPanel();
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87 | JLabel validation_label = new JLabel(Dictionary.get("CDM.FormatManager.MessageBox"));
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88 | validation_label.setBorder(new EmptyBorder(10,10,10,10)); // add some margin
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89 | editor_msgarea = new JTextArea();
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90 |
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91 | editor_msgarea.setCaretPosition(0);
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92 | editor_msgarea.setLineWrap(true);
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93 | editor_msgarea.setRows(3);
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94 | editor_msgarea.setWrapStyleWord(false);
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95 | editor_msgarea.setEditable(false);
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96 | editor_msgarea.setToolTipText(Dictionary.get("CDM.FormatManager.MessageBox_Tooltip"));
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97 | validation_msg_panel.setBorder(BorderFactory.createEmptyBorder(2, 0, 0, 0));
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98 | validation_msg_panel.setLayout(new BorderLayout(5, 0));
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99 | validation_msg_panel.add(validation_label, BorderLayout.WEST);
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100 | validation_msg_panel.add(new JScrollPane(editor_msgarea), BorderLayout.CENTER);
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101 |
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102 | // Find functionality - can extend for Find and Replace
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103 | // taken from https://github.com/bobbylight/RSyntaxTextArea/wiki/Example:-Using-Find-and-Replace
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104 | // Create a toolbar with searching options.
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105 | JToolBar toolBar = new JToolBar();
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106 | searchField = new JTextField(30);
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107 | toolBar.add(searchField);
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108 | nextButton = new JButton("Find Next");
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109 | nextButton.setActionCommand("FindNext");
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110 | nextButton.addActionListener(this);
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111 | toolBar.add(nextButton);
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112 | searchField.addActionListener(this);
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113 | prevButton = new JButton("Find Previous");
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114 | prevButton.setActionCommand("FindPrev");
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115 | prevButton.addActionListener(this);
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116 | toolBar.add(prevButton);
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117 | regexCB = new JCheckBox("Regex");
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118 | toolBar.add(regexCB);
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119 | matchCaseCB = new JCheckBox("Match Case");
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120 | toolBar.add(matchCaseCB);
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121 |
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122 | // the all important XML editor
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123 | editor = new NumberedJTextArea(Dictionary.get("ConfigFileEditor.Tooltip"));
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124 | editor.getDocument().addDocumentListener(this);
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125 | // if Ctrl (or Mac equiv) + F is pressed in the config file editing area,
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126 | // then move the focus to the searchField, so the user can start typing the searchTerm
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127 | editor.addKeyListener(new ConfigFileEditorKeyListener());
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128 |
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129 | save_button = new GLIButton(Dictionary.get("General.Save"), Dictionary.get("ConfigFileEditor.Save_Tooltip"));
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130 | cancel_button = new GLIButton(Dictionary.get("General.Cancel"), Dictionary.get("ConfigFileEditor.Cancel_Tooltip")); // tooltip is the same
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131 | cancel_button.addActionListener(this);
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132 | save_button.addActionListener(this);
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133 |
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134 | // LAYOUT
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135 | JPanel button_panel = new JPanel(new FlowLayout());
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136 | button_panel.setComponentOrientation(Dictionary.getOrientation());
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137 | button_panel.add(editor.undoButton);
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138 | button_panel.add(editor.redoButton);
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139 | button_panel.add(cancel_button);
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140 | button_panel.add(save_button);
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141 |
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142 | // toolbars_panel to contain find-and-replace toolbar and undo/redo/cancel/save button panel
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143 | JPanel toolbars_panel = new JPanel(new BorderLayout());
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144 | toolbars_panel.add(toolBar, BorderLayout.NORTH);
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145 | toolbars_panel.add(button_panel, BorderLayout.CENTER);
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146 |
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147 | JPanel content_pane = (JPanel) getContentPane();
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148 | content_pane.setComponentOrientation(Dictionary.getOrientation());
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149 | content_pane.setLayout(new BorderLayout());
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150 | content_pane.add(validation_msg_panel, BorderLayout.NORTH);
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151 | content_pane.add(new JScrollPane(editor), BorderLayout.CENTER); // make editor scrollable
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152 | content_pane.add(toolbars_panel, BorderLayout.SOUTH);
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153 |
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154 | // NOW WE CAN PREPARE THE ACTUAL CONTENT TO GO INTO THE XML EDITOR TEXTAREA
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155 | Document xmlDoc = null;
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156 | xmlDoc = XMLTools.parseXMLFile(config_file);
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157 |
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158 | if(xmlDoc != null) {
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159 |
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160 | // Save the collectionConfig.xml before loading it.
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161 | String[] nonEscapingTagNames = { StaticStrings.FORMAT_STR, StaticStrings.DISPLAYITEM_STR };
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162 | XMLTools.writeXMLFile(this.config_file, xmlDoc, nonEscapingTagNames); //prepends proc instruction
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163 |
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164 | // now load the contents
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165 | editor_msgarea.setBackground(Color.white);
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166 | StringBuffer sb = new StringBuffer();
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167 | XMLTools.xmlNodeToString(sb, xmlDoc.getDocumentElement(), true, " ", 0);
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168 | editor.setText(sb.toString());
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169 | //editor.setText(elementToString(xmlDoc.getDocumentElement(), true)); // reading in file this way adds processing instruction, which the parser doesn't like.
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170 |
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171 | } else { // parsing failed
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172 | // so read in file as text and display as text and show the validation box in red
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173 |
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174 | // Won't re-save file that is already invalid before it's even been edited through this Editor
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175 | System.err.println("*** Warning: Parsing error in file " + config_file + ".");
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176 | System.err.println("*** Not saving ahead of editing.");
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177 |
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178 | String xml_str = Utility.readFile(config_file);
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179 |
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180 | // re-parse to get error msg to display in validation field
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181 |
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182 | // but first get rid of the preprocessing instruction, as this will fail parsing
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183 | String processingInstruction = getProcessingInstruction(xml_str);
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184 | xml_str = xml_str.replace(processingInstruction, "").trim(); // also trim newline at start
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185 |
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186 | if(!xml_str.equals("")) {
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187 |
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188 | String msg = XMLTools.parse(xml_str); // re-parse
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189 | editor_msgarea.setBackground(Color.red);
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190 | editor_msgarea.setText(msg); // display the parsing error
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191 | save_button.setEnabled(false);
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192 |
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193 | editor.setText(xml_str); // display the xml contents with error and all
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194 |
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195 | } else {
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196 | editor.setText("");
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197 | editor_msgarea.setText("Empty collection config file");
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198 | }
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199 | }
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200 |
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201 | // Final dialog setup & positioning.
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202 | setDefaultCloseOperation(DISPOSE_ON_CLOSE); // get rid of this dialog when it's closed (on dispose())
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203 | getRootPane().setDefaultButton(save_button);
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204 | Dimension screen_size = Configuration.screen_size;
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205 | setLocation((screen_size.width - SIZE.width) / 2, (screen_size.height - SIZE.height) / 2);
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206 | editor.setCaretPosition(0); // start at top of config XML
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207 |
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208 | // Following has no effect: not sure why on dialog show, with or without requesting focus,
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209 | // it takes some time for the editor to get focus and only if user's mouse curser is
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210 | // hovering over ConfigFileEditor and moves about a bit there.
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211 | // Give editor focus on dialog show, so that Ctrl-F, to shift focus to searchField, will be
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212 | // responsive too. Not working until mouse moves about over editor, despite the suggestion
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213 | // at https://stackoverflow.com/questions/17828264/java-swing-jdialog-default-focus
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214 | editor.requestFocusInWindow();
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215 | }
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216 |
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217 | public void actionPerformed(ActionEvent e) {
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218 |
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219 | if(e.getSource() == cancel_button) {
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220 | this.dispose(); // get rid of this dialog, we're done
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221 | }
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222 | else if(e.getSource() == save_button) {
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223 | // write out the XML to the collectionConfig.xml file and we're done.
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224 |
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225 | // already know the xml in the textarea is valid, else the save_button would have been inactive
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226 | Document xml_file_doc = XMLTools.getDOM(editor.getText());
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227 | // This code from FormatConversionDialog.dispose()
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228 | // saves the XML, prepending the processing instruction (<?xml ... ?>)
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229 | String[] nonEscapingTagNames = { StaticStrings.FORMAT_STR, StaticStrings.DISPLAYITEM_STR };
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230 | XMLTools.writeXMLFile(this.config_file, xml_file_doc, nonEscapingTagNames);
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231 |
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232 | this.dispose(); // get rid of this dialog, we're done
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233 |
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234 | // close and reopen the collection in GLI
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235 | String current_collection_filepath = Gatherer.c_man.getCollection().getCollectionPath();
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236 | Gatherer.c_man.closeCollection();
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237 | Gatherer.c_man.loadCollection(current_collection_filepath);
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238 | }
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239 |
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240 | // Find functionality, can extend for Find and Replace
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241 | // taken from https://github.com/bobbylight/RSyntaxTextArea/wiki/Example:-Using-Find-and-Replace
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242 | else if(e.getSource() == searchField) {
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243 | nextButton.doClick(0);
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244 | }
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245 | else if(e.getSource() == nextButton || e.getSource() == prevButton) {
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246 | // "FindNext" => search forward, "FindPrev" => search backward
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247 | String command = e.getActionCommand();
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248 | boolean forward = "FindNext".equals(command);
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249 |
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250 | // Create an object defining our search parameters.
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251 | SearchContext context = new SearchContext();
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252 | String text = searchField.getText();
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253 | if (text.length() == 0) {
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254 | return;
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255 | }
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256 | context.setSearchFor(text);
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257 | context.setMatchCase(matchCaseCB.isSelected());
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258 | context.setRegularExpression(regexCB.isSelected());
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259 | context.setSearchForward(forward);
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260 | context.setWholeWord(false);
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261 |
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262 | //boolean found = SearchEngine.find(this.editor, context).wasFound();
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263 | boolean found = false;
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264 | try {
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265 | found = SearchEngine.find(this.editor, context);
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266 | // if the current search string is a correction to a previous invalid regex,
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267 | // then return background colour back to normal
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268 | searchField.setBackground(Color.white);
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269 | if (!found) {
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270 | JOptionPane.showMessageDialog(this, "Text not found");
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271 | }
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272 | } catch(java.util.regex.PatternSyntaxException regex_exception) {
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273 | searchField.setBackground(Color.red);
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274 | JOptionPane.showMessageDialog(this, "Invalid regex");
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275 | }
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276 |
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277 | }
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278 | }
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279 |
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280 |
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281 | // This method returns a proper processing instruction (starts with <?xml and ends with ?>)
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282 | // else the empty string is returned
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283 | public String getProcessingInstruction(String xmlStr) {
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284 | String processingInstruction = "";
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285 |
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286 | xmlStr = xmlStr.trim();
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287 | if(xmlStr.startsWith("<?xml")) {
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288 | int endIndex = xmlStr.indexOf("?>"); // end of processing instruction
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289 |
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290 | if(endIndex != -1) {
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291 | endIndex += 2;
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292 | processingInstruction = xmlStr.substring(0, endIndex);
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293 | }
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294 | }
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295 | return processingInstruction;
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296 | }
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297 |
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298 |
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299 | // THE FOLLOWING FUNCTIONS ARE LARGELY FROM Format4gs3Manager.java.EditorListener
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300 | public void changedUpdate(DocumentEvent e)
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301 | {
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302 | update();
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303 | }
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304 |
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305 | public void insertUpdate(DocumentEvent e)
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306 | {
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307 | update();
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308 | updateUndo("insert");
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309 |
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310 | }
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311 |
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312 | public void removeUpdate(DocumentEvent e)
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313 | {
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314 | update();
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315 | updateUndo("remove");
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316 |
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317 | }
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318 |
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319 | private void updateUndo(String from)
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320 | {
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321 |
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322 | editor.undoButton.setEnabled(true);
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323 | }
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324 |
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325 | public void update()
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326 | {
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327 |
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328 | String xml_str = editor.getText();
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329 |
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330 | // Processing instructions "<?xml...?>" are no longer displayed in the editor (but
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331 | // they are written out to the file on save) so we don't need to deal with them here.
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332 |
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333 | // can't parse with processing instruction <?xml...?>, so remove that
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334 | ///String processingInstruction = getProcessingInstruction(xml_str);
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335 | ///xml_str = xml_str.replace(processingInstruction, "");
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336 | // now can parse the XML portion without the processing instruction,
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337 | // while the original XML remains unchanged in the editor area
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338 | // If the processing instruction was incomplete, then xml_str would still
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339 | // include the incomplete processing instruction, and parsing below will catch the error.
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340 |
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341 | String msg = XMLTools.parse(xml_str);
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342 | editor_msgarea.setText(msg);
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343 |
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344 | if (msg.startsWith(XMLTools.WELLFORMED))
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345 | {
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346 | editor_msgarea.setBackground(Color.white);
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347 | save_button.setEnabled(true);
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348 | }
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349 | else
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350 | {
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351 | editor_msgarea.setBackground(Color.red);
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352 | save_button.setEnabled(false);
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353 | }
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354 | }
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355 |
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356 |
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357 | // if Ctrl (or Mac equiv) + F is pressed in the config file editing area,
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358 | // then move the focus to the searchField, so the user can start typing the searchTerm
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359 | private class ConfigFileEditorKeyListener
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360 | extends KeyAdapter
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361 | {
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362 | /** Gives notification of key events on the text field */
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363 | public void keyPressed(KeyEvent key_event)
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364 | {
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365 | // Don't hardcode check for Ctrl key "(e.getModifiers() & KeyEvent.CTRL_MASK) != 0)"
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366 | // because Mac uses another modifier key, Command-F instead of Ctrl-F.
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367 | // https://stackoverflow.com/questions/5970765/java-detect-ctrlx-key-combination-on-a-jtree
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368 | if((key_event.getModifiers() == Toolkit.getDefaultToolkit().getMenuShortcutKeyMask())
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369 | && key_event.getKeyCode() == KeyEvent.VK_F) {
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370 |
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371 | // Instead of requestFocus() or the more forceful sounding grabFocus(),
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372 | // use requestFocusInWindow(), see
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373 | // https://stackoverflow.com/questions/1425392/how-do-you-set-a-focus-on-textfield-in-swing
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374 | ConfigFileEditor.this.searchField.requestFocusInWindow();
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375 | //JOptionPane.showMessageDialog(ConfigFileEditor.this, "Got a key", "Got key " + key_event.getKeyCode(), JOptionPane.INFORMATION_MESSAGE);
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376 | }
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377 | }
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378 | }
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379 | }
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