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: John Thompson, 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) 1999 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.gui;
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38 |
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39 | import java.awt.*;
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40 | import java.awt.event.*;
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41 | import java.io.*;
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42 | import java.util.*;
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43 | import javax.swing.*;
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44 | import javax.swing.event.*;
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45 | import org.greenstone.gatherer.Dictionary;
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46 | import org.greenstone.gatherer.Gatherer;
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47 | import org.greenstone.gatherer.file.FileAssociationManager;
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48 | import org.greenstone.gatherer.gui.GComboBox;
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49 | import org.greenstone.gatherer.gui.ModalDialog;
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50 | import org.greenstone.gatherer.gui.SimpleMenuBar;
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51 | import org.greenstone.gatherer.util.Utility;
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52 | import org.outerj.pollo.util.*;
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53 |
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54 | /** The file association allows the entry of new file associations and the modification of existing ones. This is done via a list of known extensions, and two fields to fill out relevant details.
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55 | * @author John Thompson, Greenstone Digital Library, University of Waikato
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56 | * @version 2.3
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57 | */
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58 | public class FileAssociationDialog
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59 | extends ModalDialog {
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60 | /** <i>true</i> iff this addition action been cancelled by the user. */
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61 | private boolean cancelled = false;
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62 | /** <i>true</i> iff we should ignore any current changes to the extension list. */
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63 | private boolean ignore = false;
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64 | /** <i>true</i> iff the extension has not changed recently, but the command has. */
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65 | private boolean save_required = false;
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66 | /** A reference to ourselves so that our inner classes can dispose of us. */
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67 | private FileAssociationDialog self;
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68 | /** A reference to the manager in charge of storing all the file association information. */
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69 | private FileAssociationManager manager;
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70 | /** The button used to open a file browser for simplier executable selection. */
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71 | private JButton browse;
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72 | /** The button used to cancel this dialog without commiting any changes. */
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73 | private JButton cancel;
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74 | /** The button used to hide this dialog after updating or adding file associations as necessary. */
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75 | private JButton ok;
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76 | /** The combobox used to select what extension you wish to change. */
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77 | private GComboBox extension;
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78 | /** A field for entering the command string. */
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79 | private JTextField command;
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80 | /** The extension last chosen from the combobox. This way we can determine if the extension has been modified by the user. */
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81 | private String previous_extension;
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82 | /** The default size of a label. */
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83 | static final private Dimension LABEL_SIZE = new Dimension(150, 25);
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84 | /** The default size for the dialog. */
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85 | static final private Dimension SIZE = new Dimension(600, 270);
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86 |
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87 | /** Create a new file association dialog.
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88 | * @param manager A reference to the <strong>FileAssociationManager</strong> so we can determine what extensions are already associated.
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89 | * @see org.greenstone.gatherer.Configuration
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90 | * @see org.greenstone.gatherer.gui.Coloring
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91 | */
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92 | public FileAssociationDialog(FileAssociationManager manager) {
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93 | super(Gatherer.g_man);
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94 | this.manager = manager;
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95 | this.self = this;
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96 |
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97 | // Creation
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98 | setModal(true);
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99 | setSize(SIZE);
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100 | setJMenuBar(new SimpleMenuBar("fileassociations"));
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101 | Dictionary.setText(this, "FileAssociationDialog.Title");
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102 |
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103 | JPanel content_pane = (JPanel) getContentPane();
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104 | content_pane.setBackground(Gatherer.config.getColor("coloring.collection_heading_background", false));
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105 | JPanel control_pane = new JPanel();
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106 |
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107 | JTextArea instructions_area = new JTextArea();
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108 | instructions_area.setEditable(false);
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109 | instructions_area.setLineWrap(true);
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110 | instructions_area.setRows(5);
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111 | instructions_area.setWrapStyleWord(true);
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112 | Dictionary.setText(instructions_area, "FileAssociationDialog.Instructions");
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113 |
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114 | JPanel extension_pane = new JPanel();
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115 | extension_pane.setOpaque(false);
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116 | JLabel extension_label = new JLabel();
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117 | extension_label.setPreferredSize(LABEL_SIZE);
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118 | Dictionary.setText(extension_label, "FileAssociationDialog.Extension");
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119 |
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120 | extension = new GComboBox();
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121 | extension.setEditable(true);
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122 | extension.setPreferredSize(LABEL_SIZE);
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123 | for(int i = 0; i < manager.size(); i++) {
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124 | extension.add(manager.getExtension(i));
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125 | }
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126 | Dictionary.setTooltip(extension, "FileAssociationDialog.Extension_Tooltip");
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127 |
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128 | JPanel command_pane = new JPanel();
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129 | command_pane.setOpaque(false);
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130 | JLabel command_label = new JLabel();
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131 | command_label.setPreferredSize(LABEL_SIZE);
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132 | Dictionary.setText(command_label, "FileAssociationDialog.Command");
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133 | JPanel inner_pane = new JPanel();
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134 | inner_pane.setOpaque(false);
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135 | command = new JTextField();
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136 | command.setBackground(Gatherer.config.getColor("coloring.collection_tree_background", false));
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137 | command.setSelectionColor(Gatherer.config.getColor("coloring.collection_selection_background", false));
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138 | command.setSelectedTextColor(Gatherer.config.getColor("coloring.collection_selection_foreground", false));
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139 | if(extension.count() > 0) {
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140 | command.setText(manager.getCommandString((String)extension.get(0)));
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141 | }
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142 | Dictionary.setTooltip(command, "FileAssociationDialog.Command_Tooltip");
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143 |
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144 | browse = new JButton();
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145 | browse.setBackground(Gatherer.config.getColor("coloring.button_background", false));
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146 | browse.setMnemonic(KeyEvent.VK_B);
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147 | browse.setPreferredSize(LABEL_SIZE);
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148 | Dictionary.setBoth(browse, "FileAssociationDialog.Browse", "FileAssociationDialog.Browse_Tooltip");
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149 |
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150 | JPanel button_pane = new JPanel();
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151 | button_pane.setOpaque(false);
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152 | ok = new JButton();
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153 | ok.setBackground(Gatherer.config.getColor("coloring.button_background", false));
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154 | ok.setMnemonic(KeyEvent.VK_O);
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155 | Dictionary.setBoth(ok, "General.OK", "General.OK_Tooltip");
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156 | cancel = new JButton();
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157 | cancel.setBackground(Gatherer.config.getColor("coloring.button_background", false));
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158 | cancel.setMnemonic(KeyEvent.VK_C);
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159 | Dictionary.setBoth(cancel, "General.Cancel", "General.Pure_Cancel_Tooltip");
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160 |
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161 | // Connection
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162 | browse.addActionListener(new BrowseListener());
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163 | cancel.addActionListener(new CancelListener());
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164 | ok.addActionListener(new OKListener());
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165 | extension.addActionListener(new ExtensionListener());
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166 | command.getDocument().addDocumentListener(new CommandListener());
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167 |
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168 | // Layout
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169 | extension_pane.setBorder(BorderFactory.createEmptyBorder(5,0,0,0));
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170 | extension_pane.setLayout(new BorderLayout());
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171 | extension_pane.add(extension_label, BorderLayout.WEST);
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172 | extension_pane.add(extension, BorderLayout.EAST);
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173 |
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174 | inner_pane.setLayout(new BorderLayout());
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175 | inner_pane.add(command, BorderLayout.CENTER);
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176 | inner_pane.add(browse, BorderLayout.EAST);
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177 |
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178 | command_pane.setBorder(BorderFactory.createEmptyBorder(5,0,5,0));
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179 | command_pane.setLayout(new GridLayout(2,1));
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180 | command_pane.add(command_label);
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181 | command_pane.add(inner_pane);
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182 |
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183 | control_pane.setLayout(new BorderLayout());
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184 | control_pane.add(extension_pane, BorderLayout.NORTH);
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185 | control_pane.add(command_pane, BorderLayout.CENTER);
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186 |
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187 | button_pane.setLayout(new GridLayout(1,2,2,2));
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188 | button_pane.add(ok);
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189 | button_pane.add(cancel);
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190 |
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191 | content_pane.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
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192 | content_pane.setLayout(new BorderLayout());
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193 | content_pane.add(new JScrollPane(instructions_area), BorderLayout.NORTH);
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194 | content_pane.add(control_pane, BorderLayout.CENTER);
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195 | content_pane.add(button_pane, BorderLayout.SOUTH);
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196 |
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197 | Dimension screen_size = Gatherer.config.screen_size;
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198 | setLocation((screen_size.width - SIZE.width) / 2, (screen_size.height - SIZE.height) / 2);
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199 | }
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200 | /** Destructor to ensure dialog gets garbage collected. */
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201 | public void destroy() {
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202 | self = null;
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203 | manager = null;
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204 | browse = null;
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205 | cancel = null;
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206 | ok = null;
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207 | extension = null;
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208 | command = null;
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209 | previous_extension = null;
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210 | }
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211 |
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212 | /** Redisplay the dialog, ensuring that the details (or lack thereof) for a certain extension is apparent. In fact if an extension is provided force the user to add it or cancel.
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213 | * @param new_extension The extension code as a <strong>String</strong>.
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214 | */
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215 | public String display(String new_extension) {
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216 | if(new_extension != null) {
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217 | Dictionary.setBoth(ok, "FileAssociationDialog.Add", "FileAssociationDialog.Add_Tooltip");
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218 | int index = extension.add(new_extension);
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219 | extension.setSelectedIndex(index);
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220 | extension.setEnabled(false);
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221 | }
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222 | else {
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223 | Dictionary.setBoth(ok, "General.OK", "General.OK_Tooltip");
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224 | extension.setEnabled(true);
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225 | }
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226 | setVisible(true);
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227 | if(save_required) {
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228 | setCommand((String)extension.getSelectedItem(), (String)command.getText(), true);
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229 | save_required = false;
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230 | }
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231 | if(!cancelled) {
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232 | return setCommand((String)extension.getSelectedItem(), (String)command.getText(), false);
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233 | }
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234 | else {
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235 | return null;
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236 | }
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237 | }
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238 |
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239 | private String setCommand(String extension, String command, boolean process) {
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240 | if(command.indexOf(FileAssociationManager.FILENAME_ARG) == -1) {
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241 | command = command + " " + FileAssociationManager.FILENAME_ARG;
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242 | }
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243 | if(process) {
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244 | manager.setCommand(extension, command);
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245 | }
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246 | return command;
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247 | }
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248 |
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249 | /** Whenever the user clicks the browse button, we should open up a file browser to allow them to select an executable file from somewhere in the file system. */
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250 | private class BrowseListener
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251 | implements ActionListener {
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252 | /** Open up a simple JFileChooser when the user clicks the button.
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253 | * @param event An <strong>ActionEvent</strong> containing information about the event.
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254 | */
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255 | public void actionPerformed(ActionEvent event) {
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256 | JFileChooser chooser = new JFileChooser(new File(Utility.BASE_DIR));
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257 | chooser.setDialogTitle(Dictionary.newget("FileAssociationDialog.Browse_Title"));
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258 | chooser.setFileFilter(new ExtensionFileFilter(".bat", Dictionary.newget("FileAssociationDialog.Batch_File")));
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259 | chooser.setFileFilter(new ExtensionFileFilter(".com", Dictionary.newget("FileAssociationDialog.Command_File")));
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260 | chooser.setFileFilter(new ExtensionFileFilter(".exe", Dictionary.newget("FileAssociationDialog.Executable_File")));
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261 | chooser.setAcceptAllFileFilterUsed(true);
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262 | int return_val = chooser.showOpenDialog(null);
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263 | if(return_val == JFileChooser.APPROVE_OPTION) {
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264 | command.setText(chooser.getSelectedFile().getAbsolutePath());
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265 | save_required = true;
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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 | /** Listens for actions apon the cancel button, and if detected disposes of the dialog without saving changes. */
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271 | private class CancelListener
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272 | implements ActionListener {
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273 | /** Listens for actions apon the cancel button, and if detected disposes of the dialog without saving changes.
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274 | * @param event An <strong>ActionEvent</strong> containing further information about the action.
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275 | */
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276 | public void actionPerformed(ActionEvent event) {
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277 | cancelled = true;
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278 | save_required = false;
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279 | self.dispose();
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280 | }
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281 | }
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282 |
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283 | /** If any changes occur to the command field, mark it as needing saving before we can change extensions, or dispose of this dialog (other than cancelling. */
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284 | private class CommandListener
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285 | implements DocumentListener {
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286 | /** Gives notification that an attribute or set of attributes changed. */
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287 | public void changedUpdate(DocumentEvent e) {
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288 | save_required = !ignore && true;
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289 | }
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290 | /** Gives notification that there was an insert into the document. */
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291 | public void insertUpdate(DocumentEvent e) {
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292 | save_required = !ignore && true;
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293 | }
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294 |
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295 | /** Gives notification that a portion of the document has been removed. */
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296 | public void removeUpdate(DocumentEvent e) {
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297 | save_required = !ignore && true;
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298 | }
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299 | }
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300 |
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301 | /** Whenever the user selects an extension, we should fill out the command field with whatever value has been previously entered for the command (if any). */
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302 | private class ExtensionListener
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303 | implements ActionListener {
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304 | /** This method is called whenever the selection in the extension list changes, so that we can save any old details, then load up the information for the new selection.
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305 | * @param event An <strong>ItemEvent</strong> encompassing everything you ever wanted to know about the list selectio, but were afraid to ask.
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306 | * @see org.greenstone.gatherer.file.FileAssociationManager
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307 | */
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308 | public void actionPerformed(ActionEvent event) {
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309 | String ext = (String) extension.getSelectedItem();
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310 | if(!ignore && ext != null && ext.length() > 0) {
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311 | ignore = true;
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312 | // Save the previous extension if necessary
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313 | if(save_required && previous_extension != null) {
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314 | setCommand(previous_extension, command.getText(), true);
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315 | save_required = false;
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316 | }
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317 | command.setText(manager.getCommandString(ext));
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318 | previous_extension = ext;
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319 | ignore = false;
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320 | }
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321 | }
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322 | }
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323 |
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324 | /** Listen for clicks on the ok button, and dispose when detected. */
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325 | private class OKListener
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326 | implements ActionListener {
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327 | /** When a click on OK is detected, save the current information, then dispose.
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328 | * @param event An <strong>ActionEvent</strong> with details about the button press.
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329 | */
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330 | public void actionPerformed(ActionEvent event) {
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331 | if(save_required) {
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332 | setCommand(extension.getSelectedItem().toString(), command.getText(), true);
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333 | save_required = false;
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334 | }
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335 | self.dispose();
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336 | }
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337 | }
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338 | }
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