[9856] | 1 | /**
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| 2 | *############################################################################
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| 3 | * A component of the Greenstone Librarian Interface, part of the Greenstone
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| 4 | * digital library suite from the New Zealand Digital Library Project at the
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| 5 | * University of Waikato, New Zealand.
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| 6 | *
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| 7 | * Author: Michael Dewsnip, NZDL Project, University of Waikato, NZ
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| 8 | *
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| 9 | * Copyright (C) 2005 New Zealand Digital Library Project
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| 10 | *
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| 11 | * This program is free software; you can redistribute it and/or modify
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| 12 | * it under the terms of the GNU General Public License as published by
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| 13 | * the Free Software Foundation; either version 2 of the License, or
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| 14 | * (at your option) any later version.
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| 15 | *
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| 16 | * This program is distributed in the hope that it will be useful,
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| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 19 | * GNU General Public License for more details.
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| 20 | *
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| 21 | * You should have received a copy of the GNU General Public License
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| 22 | * along with this program; if not, write to the Free Software
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| 23 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 24 | *############################################################################
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| 25 | */
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| 26 |
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| 27 | package org.greenstone.gatherer.gui;
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| 28 |
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| 29 |
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| 30 | import java.awt.*;
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| 31 | import java.awt.event.*;
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| 32 | import java.io.*;
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| 33 | import javax.swing.*;
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| 34 | import javax.swing.event.*;
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| 35 | import javax.swing.table.*;
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| 36 | import org.greenstone.gatherer.Configuration;
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| 37 | import org.greenstone.gatherer.Dictionary;
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| 38 | import org.greenstone.gatherer.collection.CollectionTreeNode;
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| 39 | import org.greenstone.gatherer.metadata.MetadataChangedListener;
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| 40 | import org.greenstone.gatherer.metadata.MetadataElement;
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| 41 | import org.greenstone.gatherer.metadata.MetadataTools;
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| 42 | import org.greenstone.gatherer.metadata.MetadataValue;
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| 43 | import org.greenstone.gatherer.metadata.MetadataValueTableEntry;
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| 44 | import org.greenstone.gatherer.metadata.MetadataValueTableModel;
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| 45 | import org.greenstone.gatherer.metadata.MetadataXMLFileManager;
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[10011] | 46 | import org.greenstone.gatherer.util.JarTools;
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[9856] | 47 | import org.greenstone.gatherer.util.Utility;
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| 48 |
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| 49 |
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| 50 | public class MetadataValueTablePane
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| 51 | extends JPanel
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| 52 | {
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| 53 | private MetadataValueTable metadata_value_table = null;
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| 54 | /** Used to display either the MetadataValueTable (when files are selected) or a placeholder panel */
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| 55 | private CardLayout card_layout = null;
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| 56 | /** The name of the panel containing the metadata value table */
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| 57 | private String METADATA_VALUE_TABLE_CARD = "";
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| 58 | /** The name of the panel containing the "no metadata available" placeholder */
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| 59 | private String NO_METADATA_AVAILABLE_CARD = "No metadata available";
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| 60 | /** The name of the panel containing the "no files selected" placeholder */
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| 61 | private String NO_FILES_SELECTED_CARD = "No files selected";
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| 62 |
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| 63 |
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| 64 | public MetadataValueTablePane()
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| 65 | {
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| 66 | super();
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| 67 |
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| 68 | metadata_value_table = new MetadataValueTable();
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| 69 |
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| 70 | JScrollPane metadata_value_table_scroll = new JScrollPane(metadata_value_table);
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| 71 | metadata_value_table_scroll.getViewport().setBackground(Configuration.getColor("coloring.collection_tree_background", false));
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| 72 | metadata_value_table_scroll.setOpaque(true);
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| 73 |
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| 74 | JPanel metadata_value_table_pane = new JPanel();
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| 75 | metadata_value_table_pane.setLayout(new BorderLayout());
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| 76 | metadata_value_table_pane.add(metadata_value_table_scroll, BorderLayout.CENTER);
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| 77 |
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[12119] | 78 | JLabel no_metadata_available_label = new JLabel(Dictionary.get("EnrichPane.No_Metadata"));
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[9856] | 79 | no_metadata_available_label.setHorizontalAlignment(JLabel.CENTER);
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| 80 | no_metadata_available_label.setOpaque(false);
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| 81 | no_metadata_available_label.setVerticalAlignment(JLabel.CENTER);
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[12119] | 82 |
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[9856] | 83 | JPanel no_metadata_available_pane = new JPanel();
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| 84 | no_metadata_available_pane.setLayout(new BorderLayout());
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| 85 | no_metadata_available_pane.add(no_metadata_available_label, BorderLayout.CENTER);
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| 86 |
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[12119] | 87 | JLabel no_files_selected_label = new JLabel(Dictionary.get("EnrichPane.No_File"));
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[9856] | 88 | no_files_selected_label.setHorizontalAlignment(JLabel.CENTER);
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| 89 | no_files_selected_label.setOpaque(false);
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| 90 | no_files_selected_label.setVerticalAlignment(JLabel.CENTER);
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[12119] | 91 |
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[9856] | 92 | JPanel no_files_selected_pane = new JPanel();
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| 93 | no_files_selected_pane.setLayout(new BorderLayout());
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| 94 | no_files_selected_pane.add(no_files_selected_label, BorderLayout.CENTER);
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| 95 |
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| 96 | card_layout = new CardLayout();
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| 97 |
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| 98 | this.setBorder(BorderFactory.createEmptyBorder(5,0,5,0));
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| 99 | this.setFont(Configuration.getFont("general.font", false));
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| 100 | this.setLayout(card_layout);
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| 101 | this.add(metadata_value_table_pane, METADATA_VALUE_TABLE_CARD);
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| 102 | this.add(no_metadata_available_pane, NO_METADATA_AVAILABLE_CARD);
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| 103 | this.add(no_files_selected_pane, NO_FILES_SELECTED_CARD);
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| 104 | }
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| 105 |
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| 106 |
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| 107 | public void addMetadataValueTableListSelectionListener(ListSelectionListener list_selection_listener)
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| 108 | {
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| 109 | metadata_value_table.getSelectionModel().addListSelectionListener(list_selection_listener);
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| 110 | }
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| 111 |
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| 112 |
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| 113 | public void addMetadataValueTableMouseListener(MouseListener mouse_listener)
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| 114 | {
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| 115 | metadata_value_table.addMouseListener(mouse_listener);
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| 116 | }
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| 117 |
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| 118 |
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| 119 | public void addMetadataValueTextFieldDocumentListener(DocumentListener document_listener)
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| 120 | {
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| 121 | metadata_value_table.getMetadataValueTextField().getDocument().addDocumentListener(document_listener);
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| 122 | }
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| 123 |
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| 124 |
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| 125 | public void addMetadataValueTextFieldKeyListener(KeyListener key_listener)
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| 126 | {
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| 127 | metadata_value_table.getMetadataValueTextField().addKeyListener(key_listener);
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| 128 | }
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| 129 |
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| 130 |
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| 131 | public MetadataValueTableEntry getSelectedMetadataValueTableEntry()
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| 132 | {
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| 133 | return metadata_value_table.getSelectedMetadataValueTableEntry();
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| 134 | }
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| 135 |
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| 136 |
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| 137 | public boolean isMouseEventForInheritedMetadataValueTableColumn(MouseEvent mouse_event)
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| 138 | {
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| 139 | return metadata_value_table.isMouseEventForInheritedMetadataValueTableColumn(mouse_event);
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| 140 | }
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| 141 |
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| 142 |
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| 143 | public void setMetadataValueTextFieldValue(String metadata_value_string)
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| 144 | {
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| 145 | metadata_value_table.setMetadataValueTextFieldValue(metadata_value_string);
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| 146 | }
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| 147 |
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| 148 |
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| 149 | public void stopEditingAndAddBlankRowForSelectedMetadataElement()
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| 150 | {
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| 151 | metadata_value_table.stopEditing();
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| 152 | metadata_value_table.addBlankRowForSelectedMetadataElement();
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| 153 | }
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| 154 |
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| 155 |
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| 156 | public void stopEditingAndRebuild(CollectionTreeNode[] file_nodes)
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| 157 | {
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| 158 | metadata_value_table.stopEditing();
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| 159 | metadata_value_table.rebuild(file_nodes);
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| 160 |
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| 161 | // If no files are selected display the "no file selected" card
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| 162 | if (file_nodes == null) {
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| 163 | card_layout.show(this, NO_FILES_SELECTED_CARD);
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| 164 | }
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| 165 | // If the metadata value table is empty display the "no metadata available" card
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| 166 | else if (metadata_value_table.getRowCount() == 0) {
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| 167 | card_layout.show(this, NO_METADATA_AVAILABLE_CARD);
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| 168 | }
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| 169 | // Otherwise display the card with the metadata value table
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| 170 | else {
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| 171 | card_layout.show(this, METADATA_VALUE_TABLE_CARD);
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| 172 | }
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| 173 | }
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| 174 |
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| 175 |
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| 176 | private class MetadataValueTable
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| 177 | extends JTable
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| 178 | implements MetadataChangedListener
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| 179 | {
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| 180 | private int MINIMUM_TABLE_HEADER_SIZE = 15;
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| 181 |
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| 182 | private MetadataValueTableModel metadata_value_table_model = null;
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| 183 | private JTextField metadata_value_text_field = new JTextField();
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| 184 |
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| 185 |
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| 186 | public MetadataValueTable()
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| 187 | {
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| 188 | // Create the model for the table
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| 189 | metadata_value_table_model = new MetadataValueTableModel();
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| 190 | setModel(metadata_value_table_model);
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| 191 |
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| 192 | // We allow only one row in the table to be selected at a time
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| 193 | setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
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| 194 |
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| 195 | // We use our own editor for the value column so we have easy access to the underlying text field
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| 196 | setDefaultEditor(String.class, new DefaultCellEditor(metadata_value_text_field));
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| 197 |
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| 198 | // We need to listen for double clicks on the text field to open the editor dialog
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| 199 | metadata_value_text_field.addMouseListener(new MetadataValueTextFieldMouseListener());
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[10593] | 200 | metadata_value_text_field.setBorder(null);
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[9856] | 201 |
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| 202 | // We need to listen for key presses so we can catch Enter presses
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| 203 | addKeyListener(new MetadataValueTableKeyListener());
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| 204 |
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| 205 | // We need to listen for metadata changes so we can rebuild the table
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| 206 | MetadataXMLFileManager.addMetadataChangedListener(this);
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| 207 |
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| 208 | // We also have to ensure that the table column header hasn't gone on a severe Jenny Craig binge and has somehow lost 7/8th of its component size
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| 209 | JTableHeader table_header = getTableHeader();
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| 210 | Dimension table_header_preferred_size = table_header.getPreferredSize();
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| 211 | if (table_header_preferred_size.height < MINIMUM_TABLE_HEADER_SIZE) {
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| 212 | table_header_preferred_size.setSize(table_header_preferred_size.width, MINIMUM_TABLE_HEADER_SIZE);
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| 213 | table_header.setPreferredSize(table_header_preferred_size);
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| 214 | }
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| 215 |
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| 216 | // Set the size of the table columns: 2/7 for element, 5/7 for value (actual numbers don't matter)
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| 217 | TableColumnModel column_model = getColumnModel();
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| 218 | TableColumn inherited_column = column_model.getColumn(0);
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| 219 | inherited_column.setMinWidth(25);
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| 220 | inherited_column.setPreferredWidth(25);
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| 221 | inherited_column.setMaxWidth(25);
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| 222 | TableColumn element_column = column_model.getColumn(1);
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| 223 | element_column.setPreferredWidth(200);
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| 224 | TableColumn value_column = column_model.getColumn(2);
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| 225 | value_column.setPreferredWidth(500);
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| 226 |
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| 227 | // Use our own renderer for the table cells
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| 228 | MetadataValueTableCellRenderer metadata_value_table_cell_renderer = new MetadataValueTableCellRenderer();
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| 229 | inherited_column.setCellRenderer(metadata_value_table_cell_renderer);
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| 230 | element_column.setCellRenderer(metadata_value_table_cell_renderer);
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| 231 | value_column.setCellRenderer(metadata_value_table_cell_renderer);
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| 232 | }
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| 233 |
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| 234 |
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| 235 | private void addBlankRowForSelectedMetadataElement()
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| 236 | {
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| 237 | // Add a blank entry for the selected metadata element, then switch to it
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| 238 | MetadataElement selected_metadata_element = getSelectedMetadataValueTableEntry().getMetadataElement();
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| 239 | int blank_row = metadata_value_table_model.addBlankRowForMetadataElement(selected_metadata_element);
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| 240 | changeSelection(blank_row, 2, false, false);
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| 241 | }
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| 242 |
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| 243 |
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| 244 | private JTextField getMetadataValueTextField()
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| 245 | {
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| 246 | return metadata_value_text_field;
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| 247 | }
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| 248 |
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| 249 |
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| 250 | private MetadataValueTableEntry getSelectedMetadataValueTableEntry()
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| 251 | {
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| 252 | return metadata_value_table_model.getMetadataValueTableEntry(getSelectedRow());
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| 253 | }
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| 254 |
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| 255 |
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| 256 | private boolean isMouseEventForInheritedMetadataValueTableColumn(MouseEvent mouse_event)
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| 257 | {
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| 258 | return (columnAtPoint(mouse_event.getPoint()) == 0);
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| 259 | }
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| 260 |
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| 261 |
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| 262 | public void metadataChanged(CollectionTreeNode[] file_nodes)
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| 263 | {
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| 264 | rebuild(file_nodes);
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| 265 | }
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| 266 |
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| 267 |
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| 268 | private void rebuild(CollectionTreeNode[] file_nodes)
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| 269 | {
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| 270 | // Note the metadata value table entry currently selected
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| 271 | MetadataValueTableEntry selected_metadata_value_table_entry = getSelectedMetadataValueTableEntry();
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| 272 |
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| 273 | // We don't want a lot of ListSelectionEvents while the table is rebuilding
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| 274 | clearSelection();
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| 275 |
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| 276 | // Rebuild the metadata value table model
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| 277 | metadata_value_table_model.rebuild(file_nodes);
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| 278 |
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| 279 | // Restore the metadata value table entry selection
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| 280 | if (selected_metadata_value_table_entry != null) {
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| 281 | int row_to_select = metadata_value_table_model.findMetadataValueTableEntryToSelect(selected_metadata_value_table_entry);
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| 282 | changeSelection(row_to_select, 2, false, false);
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| 283 | }
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| 284 | }
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| 285 |
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| 286 |
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| 287 | private void setMetadataValueTextFieldValue(String metadata_value_string)
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| 288 | {
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| 289 | metadata_value_text_field.setText(metadata_value_string);
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| 290 | metadata_value_text_field.requestFocus();
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| 291 | }
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| 292 |
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| 293 |
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| 294 | private void stopEditing()
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| 295 | {
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| 296 | // Save the current value in the text field, then remove the editor so it doesn't get saved again
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| 297 | TableCellEditor table_cell_editor = getCellEditor();
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| 298 | if (table_cell_editor != null) {
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| 299 | Object new_metadata_value = table_cell_editor.getCellEditorValue();
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| 300 | setValueAt(new_metadata_value, editingRow, editingColumn);
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| 301 | removeEditor();
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| 302 | }
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| 303 | }
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| 304 |
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| 305 |
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| 306 | private class MetadataValueTableCellRenderer
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| 307 | extends DefaultTableCellRenderer
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| 308 | {
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| 309 | /** Returns the default table cell renderer.
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| 310 | * @param table The <strong>JTable</strong>.
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| 311 | * @param value The value to assign to the cell at [row, column] as an <strong>Object</strong>.
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| 312 | * @param isSelected <i>true</i> if cell is selected.
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| 313 | * @param hasFocus <i>true</i> if cell has focus.
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| 314 | * @param row The row of the cell to render as an <i>int</i>.
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| 315 | * @param column The column of the cell to render as an <i>int</i>.
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| 316 | * @return The default table cell renderer <strong>Component</strong>.
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| 317 | */
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| 318 | public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column)
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| 319 | {
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| 320 | JComponent component = (JLabel) super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
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| 321 |
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[12043] | 322 | int real_column = table.convertColumnIndexToModel(column);
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[9856] | 323 | // First column: inherited metadata icon
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[12043] | 324 | if (real_column == 0 && value != null) {
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[10011] | 325 | component = new JLabel(JarTools.getImage("upfolder.gif"));
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[12345] | 326 | component.setToolTipText(Dictionary.get("EnrichPane.InheritedMetadata_Tooltip"));
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[9856] | 327 | }
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| 328 |
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| 329 | // Make sure the focus always stay in the value cell of the selected row
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[12043] | 330 | if (real_column == 2 && isSelected) {
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[9856] | 331 | table.editCellAt(row, column);
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| 332 | if (table.isEditing()) {
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| 333 | table.getEditorComponent().requestFocus();
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| 334 | }
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| 335 | }
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| 336 |
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| 337 | // Set up the component
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| 338 | component.setOpaque(true);
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| 339 |
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| 340 | // Foreground
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| 341 | if (metadata_value_table_model.isCommon(row)) {
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| 342 | component.setForeground(Color.black);
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| 343 | }
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| 344 | else {
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| 345 | component.setForeground(Color.gray);
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| 346 | }
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| 347 |
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| 348 | // Background
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| 349 | if (isSelected) {
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| 350 | component.setBackground(Configuration.getColor("coloring.workspace_heading_background", true));
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| 351 | }
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| 352 | else {
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[12043] | 353 | if (real_column < 2) {
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[9856] | 354 | component.setBackground(Configuration.getColor("coloring.collection_heading_background", true));
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| 355 | }
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| 356 | else {
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| 357 | component.setBackground(Configuration.getColor("coloring.collection_tree_background", true));
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| 358 | }
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| 359 | }
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| 360 |
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| 361 | // The value column of cells never paints focus
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[12043] | 362 | if (real_column == 2) {
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[9856] | 363 | component.setBorder(BorderFactory.createEmptyBorder(0,2,0,0));
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| 364 | }
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| 365 |
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| 366 | // We set a tooltip over the element column containing the definition of the element
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| 367 | if (value instanceof MetadataElement) {
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| 368 | String interface_language_code = Configuration.getLanguage();
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| 369 | String metadata_element_definition = MetadataTools.getMetadataElementAttribute((MetadataElement) value, "definition", interface_language_code, "en");
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| 370 | if (metadata_element_definition != null) {
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| 371 | component.setToolTipText(Utility.formatHTMLWidth(metadata_element_definition, 60));
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| 372 | }
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| 373 | }
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| 374 |
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| 375 | return component;
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| 376 | }
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| 377 | }
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| 378 |
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| 379 |
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| 380 | private class MetadataValueTableKeyListener
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| 381 | extends KeyAdapter
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| 382 | {
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| 383 | /** Gives notification of key events on the text field */
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| 384 | public void keyPressed(KeyEvent key_event)
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| 385 | {
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| 386 | // Enter: save the current value then add a blank row for the selected metadata element
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| 387 | if (key_event.getKeyCode() == KeyEvent.VK_ENTER) {
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| 388 | // ...but not for extracted metadata elements of course
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| 389 | MetadataValueTableEntry metadata_value_table_entry = getSelectedMetadataValueTableEntry();
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| 390 | if (!metadata_value_table_entry.getMetadataElement().isExtractedMetadataElement()) {
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| 391 | addBlankRowForSelectedMetadataElement();
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| 392 | }
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| 393 |
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| 394 | // We do not want this event to be processed by the table also
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| 395 | key_event.consume();
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| 396 | }
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| 397 | }
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| 398 | }
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| 399 |
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| 400 |
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| 401 | private class MetadataValueTextFieldMouseListener
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| 402 | extends MouseAdapter
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| 403 | {
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| 404 | public void mouseClicked(MouseEvent mouse_event)
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| 405 | {
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| 406 | // Double-click: pop up an editor dialog for large metadata values
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| 407 | if (mouse_event.getClickCount() == 2) {
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| 408 | EditorDialog editor_dialog = new EditorDialog();
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| 409 | String new_metadata_value_string = editor_dialog.display(metadata_value_text_field.getText());
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| 410 | if (new_metadata_value_string != null) {
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| 411 | setMetadataValueTextFieldValue(new_metadata_value_string);
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| 412 | }
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| 413 | }
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| 414 | }
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| 415 | }
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| 416 | }
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| 417 | }
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