[12564] | 1 | /**
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| 2 | *#########################################################################
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| 3 | *
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| 4 | * A component of the Gatherer application, part of the Greenstone digital
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| 5 | * library suite from the New Zealand Digital Library Project at the
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| 6 | * University of Waikato, New Zealand.
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| 7 | *
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| 8 | * <BR><BR>
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| 9 | *
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| 10 | * Author: Shaoqun Wu, Greenstone Digital Library, University of Waikato
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| 11 | *
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| 12 | * <BR><BR>
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| 13 | *
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| 14 | * Copyright (C) 2006 New Zealand Digital Library Project
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| 15 | *
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| 16 | * <BR><BR>
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| 17 | *
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| 18 | * This program is free software; you can redistribute it and/or modify
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| 19 | * it under the terms of the GNU General Public License as published by
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| 20 | * the Free Software Foundation; either version 2 of the License, or
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| 21 | * (at your option) any later version.
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| 22 | *
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| 23 | * <BR><BR>
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| 24 | *
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| 25 | * This program is distributed in the hope that it will be useful,
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| 26 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 27 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 28 | * GNU General Public License for more details.
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| 29 | *
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| 30 | * <BR><BR>
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| 31 | *
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| 32 | * You should have received a copy of the GNU General Public License
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| 33 | * along with this program; if not, write to the Free Software
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| 34 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 35 | *########################################################################
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| 36 | */
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| 37 | package org.greenstone.gatherer.gems;
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| 38 |
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| 39 | import org.w3c.dom.Document;
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| 40 |
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[12667] | 41 | import java.awt.*;
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| 42 | import java.awt.event.*;
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| 43 | import javax.swing.*;
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[12564] | 44 | import javax.swing.tree.*;
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[12667] | 45 |
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[12564] | 46 | import java.util.Observer;
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| 47 | import java.util.Observable;
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| 48 | import java.util.ArrayList;
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| 49 |
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[12667] | 50 | import org.greenstone.gatherer.Configuration;
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[12564] | 51 | import org.greenstone.gatherer.Dictionary;
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| 52 |
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| 53 | /**
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| 54 | * @author Shaoqun Wu, Greenstone Digital Library, University of Waikato
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| 55 | * @version 2.4
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| 56 | */
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| 57 | public class MetadataSetTree
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[12667] | 58 | extends JTree
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| 59 | implements Observer, ActionListener, MouseListener {
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[12564] | 60 |
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| 61 | private MetadataSetTree self;
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| 62 | private MetadataSetModel metadata_model;
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[12667] | 63 |
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[12564] | 64 | public MetadataSetTree(){
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| 65 |
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| 66 | setCellRenderer(new MetadataSetCellRenderer());
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| 67 | setRowHeight(20);
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| 68 | setEditable(false);
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| 69 | getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
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| 70 | setModel(null);
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| 71 | self = this;
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| 72 |
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[12667] | 73 | addMouseListener(this);
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| 74 | }
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| 75 |
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| 76 | public void mouseClicked(MouseEvent event) {
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| 77 | // right click
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| 78 | if (SwingUtilities.isRightMouseButton(event)) {
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| 79 | new MetadataSetTreeRightClickMenu(this, event);
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| 80 | } else {
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| 81 | TreePath tse = self.getSelectionPath();
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| 82 | if (tse!=null){
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| 83 | DefaultMutableTreeNode snode= (DefaultMutableTreeNode)tse.getLastPathComponent();
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| 84 |
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| 85 | Object data = snode.getUserObject();
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| 86 |
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| 87 | if (data instanceof MetadataElementModel){
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| 88 |
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| 89 | ((MetadataElementModel)data).notifyListeners(false);
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| 90 | }
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| 91 | else{
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| 92 | if (data instanceof MetadataSetInfo){
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| 93 | ((MetadataSetInfo)data).notifyListeners();
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[12564] | 94 | }
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[12667] | 95 | }
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[12564] | 96 | }
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[12667] | 97 | }
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[12564] | 98 |
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| 99 | }
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[12667] | 100 |
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| 101 | public void mouseEntered(MouseEvent event) { }
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[12564] | 102 |
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[12667] | 103 | public void mouseExited(MouseEvent event) { }
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| 104 |
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| 105 | public void mousePressed(MouseEvent event) { }
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| 106 |
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| 107 | public void mouseReleased(MouseEvent event) { }
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| 108 |
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[12564] | 109 | public void update(Observable o,Object arg){
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| 110 | if (arg !=null){
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| 111 | Boolean replaceModel = (Boolean)arg;
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| 112 | if (!replaceModel.booleanValue()){
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| 113 | repaint();
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| 114 | expandAll();
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| 115 | }
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| 116 | }
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| 117 | metadata_model = (MetadataSetModel)o;
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| 118 |
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| 119 | populateMetadataSetTree(metadata_model);
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| 120 |
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| 121 | }
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| 122 |
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| 123 | private void expandAll() {
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| 124 | int row = 0;
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| 125 | while (row < getRowCount()) {
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| 126 | expandRow(row);
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| 127 | row++;
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| 128 | }
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| 129 | }
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| 130 |
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| 131 |
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| 132 |
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| 133 | public void actionPerformed(ActionEvent e){
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| 134 | String command = e.getActionCommand();
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| 135 |
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| 136 | if (command.equals(GEMSConstants.ADD_ELEMENT)){
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| 137 | addElement();
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| 138 | return ;
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| 139 | }
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| 140 |
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[12667] | 141 | if (command.equals(GEMSConstants.DELETE_ELEMENT)){
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| 142 | deleteElement();
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[12564] | 143 | }
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| 144 |
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| 145 |
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[12667] | 146 | if (command.equals(GEMSConstants.MOVE_UP)){
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| 147 | moveUpElement();
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| 148 | }
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[12564] | 149 |
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[12667] | 150 | if (command.equals(GEMSConstants.MOVE_DOWN)){
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| 151 | moveDownElement();
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| 152 | }
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[12564] | 153 |
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| 154 | }
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| 155 |
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| 156 |
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| 157 | public void addElement(){
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[12667] | 158 | TreePath tse = self.getSelectionPath();
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| 159 | if (tse == null) return;
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| 160 | NewMetadataElementNamePrompt name_prompt = new NewMetadataElementNamePrompt(null);
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| 161 | if (name_prompt.isCancelled()) {
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| 162 | return;
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| 163 | }
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| 164 | String new_name = name_prompt.getName();
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| 165 |
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| 166 | DefaultTreeModel dtm = (DefaultTreeModel)getModel();
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| 167 | DefaultMutableTreeNode snode=(DefaultMutableTreeNode)tse.getLastPathComponent();
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| 168 | MetadataElementModel element_model = new MetadataElementModel(metadata_model.getMetadataSetInfo(), new_name);
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| 169 | DefaultMutableTreeNode new_node = new DefaultMutableTreeNode(element_model);
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| 170 | dtm.insertNodeInto(new_node,snode,snode.getChildCount());
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| 171 | //update model
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| 172 | Object data = snode.getUserObject();
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| 173 | if (data instanceof MetadataElementModel){
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| 174 | MetadataElementModel model = (MetadataElementModel) data;
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| 175 | model.addChild(element_model);
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| 176 | }
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| 177 | else{
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| 178 | if(data instanceof MetadataSetInfo){
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| 179 | metadata_model.addChild(element_model);
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| 180 |
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| 181 | }
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| 182 | }
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| 183 |
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| 184 | dtm.reload(snode);
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| 185 | expandPath(tse);
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| 186 | tse = tse.pathByAddingChild(new_node);
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| 187 | self.setSelectionPath(tse);
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| 188 | element_model.notifyListeners(false);
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[12564] | 189 | }
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[12667] | 190 |
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| 191 |
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[12564] | 192 |
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| 193 | public void deleteElement(){
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| 194 |
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[12667] | 195 | //int result = JOptionPane.showConfirmDialog(null, Dictionary.get("GEMS.Confirm_DeleteElement", "(Put name here)"), Dictionary.get("GEMS.Confirm_DeleteElement_Title"), JOptionPane.OK_CANCEL_OPTION);
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| 196 | //if (result != JOptionPane.OK_OPTION) return;
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[12564] | 197 |
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[12667] | 198 | TreePath tse = self.getSelectionPath();
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[12564] | 199 |
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[12667] | 200 | if (tse!=null){
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| 201 | DefaultTreeModel dtm = (DefaultTreeModel)getModel();
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| 202 | DefaultMutableTreeNode snode=(DefaultMutableTreeNode)tse.getLastPathComponent();
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| 203 | DefaultMutableTreeNode parent = (DefaultMutableTreeNode) snode.getParent();
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| 204 | snode.removeFromParent();
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[12564] | 205 |
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[12667] | 206 | Object parent_data = parent.getUserObject();
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| 207 | Object data = snode.getUserObject();
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| 208 | MetadataElementModel selected_model = null;
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| 209 | if (parent_data instanceof MetadataElementModel){
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| 210 | MetadataElementModel parent_model = (MetadataElementModel) parent_data;
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| 211 | selected_model = (MetadataElementModel) data;
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| 212 | parent_model.removeChild(selected_model);
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| 213 | parent_model.notifyListeners(false);
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| 214 | }
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| 215 | else{
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[12564] | 216 | if(parent_data instanceof MetadataSetInfo){
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| 217 | selected_model = (MetadataElementModel) data;
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| 218 | metadata_model.removeChild(selected_model);
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[12667] | 219 | ((MetadataSetInfo)parent_data).notifyListeners();
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[12564] | 220 |
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| 221 | }
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[12667] | 222 | }
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[12564] | 223 |
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[12667] | 224 | dtm.reload(parent);
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| 225 | self.setSelectionPath(tse.getParentPath());
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| 226 | //selected_model.notifyListeners(true);// notify its listeners that it's been deleted
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| 227 | }
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[12564] | 228 |
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| 229 | }
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| 230 |
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| 231 | private void moveUpElement(){
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| 232 | TreePath tse = self.getSelectionPath();
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| 233 |
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| 234 | if (tse!=null){
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| 235 | DefaultMutableTreeNode snode= (DefaultMutableTreeNode)tse.getLastPathComponent();
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| 236 | int row = getSelectionRows()[0];
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| 237 | boolean moved = false;
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| 238 |
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| 239 | Object data = snode.getUserObject();
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| 240 |
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| 241 | if (data instanceof MetadataElementModel){
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| 242 | MetadataElementModel element_model = (MetadataElementModel)data;
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| 243 | //top level element
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| 244 | if (element_model.getParent() == null){
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| 245 | moved = metadata_model.moveUp(element_model);
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| 246 |
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| 247 | }
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| 248 | else{
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| 249 | MetadataElementModel parent = element_model.getParent();
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| 250 | moved = parent.moveUp(element_model);
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| 251 | }
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| 252 | if (moved){
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| 253 | DefaultTreeModel dtm = (DefaultTreeModel)getModel();
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| 254 | DefaultMutableTreeNode pnode= (DefaultMutableTreeNode) snode.getParent();
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| 255 | int index = pnode.getIndex(snode);
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| 256 | dtm.removeNodeFromParent(snode);
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| 257 | dtm.insertNodeInto(snode,pnode,--index);
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| 258 | dtm.reload(pnode);
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| 259 | setSelectionRow(--row);
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| 260 | }
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| 261 | }
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| 262 | }
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| 263 |
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| 264 | }
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| 265 |
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| 266 | private void moveDownElement(){
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| 267 | TreePath tse = self.getSelectionPath();
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| 268 |
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| 269 | if (tse!=null){
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| 270 | boolean moved = false;
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| 271 | DefaultMutableTreeNode snode= (DefaultMutableTreeNode)tse.getLastPathComponent();
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| 272 | int row = getSelectionRows()[0];
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| 273 | Object data = snode.getUserObject();
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| 274 |
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| 275 | if (data instanceof MetadataElementModel){
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| 276 | MetadataElementModel element_model = (MetadataElementModel)data;
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| 277 | //top level element
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| 278 | if (element_model.getParent() == null){
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[12667] | 279 | moved = metadata_model.moveDown(element_model);
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[12564] | 280 | }
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| 281 | else{
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| 282 | MetadataElementModel parent = element_model.getParent();
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| 283 | moved = parent.moveDown(element_model);
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| 284 | }
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| 285 | // move the node down the tree
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| 286 | if (moved){
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| 287 | DefaultTreeModel dtm = (DefaultTreeModel)getModel();
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| 288 | DefaultMutableTreeNode pnode= (DefaultMutableTreeNode) snode.getParent();
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| 289 | int index = pnode.getIndex(snode);
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| 290 | dtm.removeNodeFromParent(snode);
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| 291 | dtm.insertNodeInto(snode,pnode,++index);
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| 292 | dtm.reload(pnode);
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| 293 | setSelectionRow(++row);
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| 294 | }
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| 295 | }
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| 296 | }
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| 297 | }
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| 298 |
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| 299 |
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| 300 | private void populateMetadataSetTree(MetadataSetModel metadata_model){
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| 301 | setModel(null);
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| 302 | MetadataSetInfo info= metadata_model.getMetadataSetInfo();
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| 303 | if (info == null) {
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| 304 | repaint();
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| 305 |
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| 306 | return;
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| 307 | }
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| 308 |
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| 309 | ArrayList metadata_elements = metadata_model.getMetadataSetModel();
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| 310 |
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| 311 | DefaultTreeModel dtm = new DefaultTreeModel(new DefaultMutableTreeNode(info));
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| 312 | DefaultMutableTreeNode root = (DefaultMutableTreeNode)dtm.getRoot();
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| 313 |
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| 314 | for(int i=0;i <metadata_elements.size();i++){
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| 315 | MetadataElementModel element_model = (MetadataElementModel)metadata_elements.get(i);
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| 316 | DefaultMutableTreeNode element = new DefaultMutableTreeNode(element_model);
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| 317 | dtm.insertNodeInto(element,root,root.getChildCount());
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| 318 | ArrayList subelements = element_model.getChildElements();
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| 319 | for(int j=0;j <subelements.size();j++){
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| 320 | MetadataElementModel subelement_model = (MetadataElementModel)subelements.get(j);
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| 321 | DefaultMutableTreeNode subelement = new DefaultMutableTreeNode(subelement_model);
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| 322 | dtm.insertNodeInto(subelement,element,element.getChildCount());
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| 323 | }
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| 324 | }
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| 325 |
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| 326 | dtm.reload(root);
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| 327 | setModel(dtm);
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| 328 |
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[12667] | 329 | }
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| 330 |
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| 331 | private class MetadataSetTreeRightClickMenu
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| 332 | extends JPopupMenu {
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| 333 |
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| 334 | private MetadataSetTreeRightClickMenu(MetadataSetTree meta_set_tree,
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| 335 | MouseEvent event)
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| 336 | {
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| 337 |
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| 338 | super();
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| 339 |
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| 340 | // the right click position
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| 341 | boolean root_node = false;
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[12721] | 342 | boolean element_node = false;
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| 343 | TreePath root_path = meta_set_tree.getPathForRow(0);
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[12667] | 344 | TreePath right_click_path = meta_set_tree.getPathForLocation(event.getX(), event.getY());
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| 345 | if (right_click_path == null) {
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[12721] | 346 | right_click_path = root_path;
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[12667] | 347 | root_node = true;
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[12721] | 348 | } else if (right_click_path.equals(root_path)) {
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[12667] | 349 | root_node = true;
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[12721] | 350 | } else if (right_click_path.getParentPath().equals(root_path)) {
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| 351 | element_node = true;
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| 352 | } // else its a subelement
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[12667] | 353 |
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| 354 | meta_set_tree.clearSelection();
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| 355 | meta_set_tree.setSelectionPath(right_click_path);
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| 356 |
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[12721] | 357 | JMenuItem add_element = new JMenuItem();
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| 358 | if (root_node) {
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| 359 | add_element.setText(Dictionary.get("GEMS.Popup.AddElement"));
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| 360 | } else {
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| 361 | add_element.setText(Dictionary.get("GEMS.Popup.AddSubElement"));
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| 362 | }
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[12667] | 363 | add_element.addActionListener(meta_set_tree);
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| 364 | add_element.setActionCommand(GEMSConstants.ADD_ELEMENT);
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| 365 | add(add_element);
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| 366 | if (!root_node) {
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| 367 | // delete element also
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[12721] | 368 | JMenuItem delete_element = new JMenuItem();
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| 369 | if (element_node) {
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| 370 | delete_element.setText(Dictionary.get("GEMS.Popup.DeleteElement"));
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| 371 | } else {
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| 372 | delete_element.setText(Dictionary.get("GEMS.Popup.DeleteSubElement"));
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| 373 | }
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[12667] | 374 | delete_element.addActionListener(meta_set_tree);
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| 375 | delete_element.setActionCommand(GEMSConstants.DELETE_ELEMENT);
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| 376 | add(delete_element);
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| 377 | }
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| 378 |
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| 379 | // Show the popup menu on screen
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| 380 | show(meta_set_tree, event.getX(), event.getY());
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| 381 | }
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| 382 |
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| 383 | }
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[12564] | 384 | }
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| 385 |
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| 386 |
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| 387 | class MetadataSetCellRenderer extends JLabel implements TreeCellRenderer {
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| 388 |
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| 389 | private Color SELECTED_COLOR = Color.lightGray;
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[12667] | 390 | private Color SELECTED_BORDER_COLOR = Color.gray;
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[12564] | 391 |
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| 392 |
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| 393 | public Component getTreeCellRendererComponent(JTree tree,
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| 394 | Object value,
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| 395 | boolean selected,
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| 396 | boolean expanded,
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| 397 | boolean leaf,
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| 398 | int row,
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| 399 | boolean hasFocus){
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| 400 |
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| 401 | DefaultMutableTreeNode node = (DefaultMutableTreeNode)value;
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| 402 | Object userObject = node.getUserObject();
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| 403 |
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| 404 | if (userObject instanceof MetadataElementModel){
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| 405 | MetadataElementModel model = (MetadataElementModel)userObject;
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| 406 | setText(model.getFullName());
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| 407 | }
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| 408 | else{
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| 409 | if (userObject instanceof MetadataSetInfo){
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| 410 | MetadataSetInfo info = (MetadataSetInfo)userObject;
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| 411 | setText(info.getMetadataSetName());
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| 412 | }
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| 413 | }
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| 414 |
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| 415 | if (selected){
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| 416 | setBackground(SELECTED_COLOR);
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| 417 |
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| 418 | }
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| 419 | else{
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| 420 | setBackground(tree.getBackground());
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| 421 | }
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| 422 | setForeground(tree.getForeground());
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| 423 | setOpaque(true);
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| 424 | return this;
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| 425 | }
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| 426 |
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| 427 | }
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