1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.gui.widgets;
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3 |
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4 | import java.awt.BorderLayout;
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5 | import java.awt.event.ActionListener;
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6 | import java.awt.event.KeyAdapter;
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7 | import java.awt.event.KeyEvent;
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8 | import java.awt.event.MouseAdapter;
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9 | import java.awt.event.MouseEvent;
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10 | import java.util.ArrayList;
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11 | import java.util.List;
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12 |
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13 | import javax.swing.AbstractListModel;
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14 | import javax.swing.JList;
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15 | import javax.swing.JPanel;
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16 | import javax.swing.JScrollPane;
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17 | import javax.swing.ListSelectionModel;
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18 | import javax.swing.event.DocumentEvent;
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19 | import javax.swing.event.DocumentListener;
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20 | import javax.swing.event.ListSelectionListener;
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21 |
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22 | public abstract class SearchTextResultListPanel<T> extends JPanel {
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23 |
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24 | protected final JosmTextField edSearchText;
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25 | protected final JList<T> lsResult;
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26 | protected final ResultListModel<T> lsResultModel = new ResultListModel<>();
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27 |
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28 | protected final transient List<ListSelectionListener> listSelectionListeners = new ArrayList<>();
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29 |
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30 | private transient ActionListener dblClickListener;
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31 | private transient ActionListener clickListener;
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32 |
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33 | protected abstract void filterItems();
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34 |
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35 | /**
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36 | * Constructs a new {@code SearchTextResultListPanel}.
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37 | */
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38 | public SearchTextResultListPanel() {
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39 | super(new BorderLayout());
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40 |
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41 | edSearchText = new JosmTextField();
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42 | edSearchText.getDocument().addDocumentListener(new DocumentListener() {
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43 | @Override
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44 | public void removeUpdate(DocumentEvent e) {
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45 | filterItems();
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46 | }
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47 |
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48 | @Override
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49 | public void insertUpdate(DocumentEvent e) {
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50 | filterItems();
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51 | }
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52 |
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53 | @Override
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54 | public void changedUpdate(DocumentEvent e) {
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55 | filterItems();
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56 | }
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57 | });
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58 | edSearchText.addKeyListener(new KeyAdapter() {
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59 | @Override
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60 | public void keyPressed(KeyEvent e) {
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61 | switch (e.getKeyCode()) {
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62 | case KeyEvent.VK_DOWN:
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63 | selectItem(lsResult.getSelectedIndex() + 1);
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64 | break;
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65 | case KeyEvent.VK_UP:
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66 | selectItem(lsResult.getSelectedIndex() - 1);
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67 | break;
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68 | case KeyEvent.VK_PAGE_DOWN:
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69 | selectItem(lsResult.getSelectedIndex() + 10);
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70 | break;
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71 | case KeyEvent.VK_PAGE_UP:
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72 | selectItem(lsResult.getSelectedIndex() - 10);
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73 | break;
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74 | case KeyEvent.VK_HOME:
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75 | selectItem(0);
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76 | break;
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77 | case KeyEvent.VK_END:
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78 | selectItem(lsResultModel.getSize());
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79 | break;
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80 | default: // Do nothing
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81 | }
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82 | }
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83 | });
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84 | add(edSearchText, BorderLayout.NORTH);
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85 |
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86 | lsResult = new JList<>(lsResultModel);
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87 | lsResult.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
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88 | lsResult.addMouseListener(new MouseAdapter() {
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89 | @Override
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90 | public void mouseClicked(MouseEvent e) {
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91 | if (e.getClickCount() > 1) {
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92 | if (dblClickListener != null)
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93 | dblClickListener.actionPerformed(null);
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94 | } else {
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95 | if (clickListener != null)
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96 | clickListener.actionPerformed(null);
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97 | }
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98 | }
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99 | });
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100 | add(new JScrollPane(lsResult), BorderLayout.CENTER);
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101 | }
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102 |
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103 | protected static class ResultListModel<T> extends AbstractListModel<T> {
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104 |
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105 | private transient List<T> items = new ArrayList<>();
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106 |
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107 | public synchronized void setItems(List<T> items) {
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108 | this.items = items;
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109 | fireContentsChanged(this, 0, Integer.MAX_VALUE);
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110 | }
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111 |
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112 | @Override
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113 | public synchronized T getElementAt(int index) {
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114 | return items.get(index);
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115 | }
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116 |
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117 | @Override
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118 | public synchronized int getSize() {
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119 | return items.size();
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120 | }
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121 |
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122 | public synchronized boolean isEmpty() {
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123 | return items.isEmpty();
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124 | }
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125 | }
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126 |
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127 | public synchronized void init() {
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128 | listSelectionListeners.clear();
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129 | edSearchText.setText("");
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130 | filterItems();
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131 | }
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132 |
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133 | private synchronized void selectItem(int newIndex) {
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134 | if (newIndex < 0) {
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135 | newIndex = 0;
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136 | }
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137 | if (newIndex > lsResultModel.getSize() - 1) {
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138 | newIndex = lsResultModel.getSize() - 1;
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139 | }
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140 | lsResult.setSelectedIndex(newIndex);
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141 | lsResult.ensureIndexIsVisible(newIndex);
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142 | }
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143 |
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144 | public synchronized void clearSelection() {
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145 | lsResult.clearSelection();
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146 | }
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147 |
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148 | public synchronized int getItemCount() {
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149 | return lsResultModel.getSize();
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150 | }
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151 |
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152 | public void setDblClickListener(ActionListener dblClickListener) {
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153 | this.dblClickListener = dblClickListener;
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154 | }
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155 |
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156 | public void setClickListener(ActionListener clickListener) {
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157 | this.clickListener = clickListener;
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158 | }
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159 |
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160 | /**
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161 | * Adds a selection listener to the presets list.
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162 | *
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163 | * @param selectListener The list selection listener
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164 | * @since 7412
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165 | */
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166 | public synchronized void addSelectionListener(ListSelectionListener selectListener) {
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167 | lsResult.getSelectionModel().addListSelectionListener(selectListener);
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168 | listSelectionListeners.add(selectListener);
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169 | }
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170 |
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171 | /**
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172 | * Removes a selection listener from the presets list.
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173 | *
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174 | * @param selectListener The list selection listener
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175 | * @since 7412
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176 | */
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177 | public synchronized void removeSelectionListener(ListSelectionListener selectListener) {
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178 | listSelectionListeners.remove(selectListener);
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179 | lsResult.getSelectionModel().removeListSelectionListener(selectListener);
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180 | }
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181 | }
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