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.event.ActionEvent;
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5 | import java.awt.event.FocusEvent;
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6 | import java.awt.event.FocusListener;
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7 | import java.beans.PropertyChangeListener;
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8 |
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9 | import javax.swing.Action;
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10 | import javax.swing.JPasswordField;
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11 | import javax.swing.TransferHandler;
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12 | import javax.swing.text.Document;
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13 | import javax.swing.text.JTextComponent;
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14 |
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15 | import org.openstreetmap.josm.Main;
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16 |
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17 | /**
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18 | * A subclass of {@link JPasswordField} to implement a workaround to
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19 | * <a href="https://bugs.openjdk.java.net/browse/JDK-6322854">JDK bug 6322854</a>.
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20 | *
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21 | * @since 5752
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22 | * @see <a href="https://josm.openstreetmap.de/ticket/8404">https://josm.openstreetmap.de/ticket/8404</a>
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23 | * @see <a href="https://hg.netbeans.org/main/rev/33cb2e81b640">https://hg.netbeans.org/main/rev/33cb2e81b640</a>
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24 | */
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25 | public class JosmPasswordField extends JPasswordField implements FocusListener {
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26 |
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27 | /**
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28 | * Constructs a new <code>JosmPasswordField</code>,
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29 | * with a default document, <code>null</code> starting
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30 | * text string, and 0 column width.
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31 | */
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32 | public JosmPasswordField() {
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33 | workaroundJdkBug6322854(this);
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34 | addFocusListener(this);
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35 | }
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36 |
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37 | /**
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38 | * Constructs a new <code>JosmPasswordField</code> that uses the
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39 | * given text storage model and the given number of columns.
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40 | * This is the constructor through which the other constructors feed.
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41 | * The echo character is set to '*', but may be changed by the current
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42 | * Look and Feel. If the document model is
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43 | * <code>null</code>, a default one will be created.
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44 | *
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45 | * @param doc the text storage to use
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46 | * @param txt the text to be displayed, <code>null</code> if none
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47 | * @param columns the number of columns to use to calculate
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48 | * the preferred width >= 0; if columns is set to zero, the
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49 | * preferred width will be whatever naturally results from
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50 | * the component implementation
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51 | */
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52 | public JosmPasswordField(Document doc, String txt, int columns) {
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53 | super(doc, txt, columns);
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54 | workaroundJdkBug6322854(this);
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55 | addFocusListener(this);
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56 | }
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57 |
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58 | /**
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59 | * Constructs a new empty <code>JosmPasswordField</code> with the specified
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60 | * number of columns. A default model is created, and the initial string
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61 | * is set to <code>null</code>.
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62 | *
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63 | * @param columns the number of columns >= 0
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64 | */
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65 | public JosmPasswordField(int columns) {
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66 | super(columns);
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67 | workaroundJdkBug6322854(this);
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68 | addFocusListener(this);
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69 | }
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70 |
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71 | /**
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72 | * Constructs a new <code>JPasswordField</code> initialized with
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73 | * the specified text and columns. The document model is set to
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74 | * the default.
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75 | *
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76 | * @param text the text to be displayed, <code>null</code> if none
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77 | * @param columns the number of columns >= 0
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78 | */
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79 | public JosmPasswordField(String text, int columns) {
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80 | super(text, columns);
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81 | workaroundJdkBug6322854(this);
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82 | addFocusListener(this);
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83 | }
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84 |
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85 | /**
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86 | * Constructs a new <code>JosmPasswordField</code> initialized
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87 | * with the specified text. The document model is set to the
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88 | * default, and the number of columns to 0.
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89 | *
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90 | * @param text the text to be displayed, <code>null</code> if none
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91 | */
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92 | public JosmPasswordField(String text) {
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93 | super(text);
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94 | workaroundJdkBug6322854(this);
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95 | addFocusListener(this);
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96 | }
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97 |
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98 | @Override
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99 | public void focusGained(FocusEvent e) {
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100 | if (Main.map != null) {
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101 | Main.map.keyDetector.setEnabled(false);
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102 | }
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103 | }
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104 |
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105 | @Override
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106 | public void focusLost(FocusEvent e) {
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107 | if (Main.map != null) {
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108 | Main.map.keyDetector.setEnabled(true);
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109 | }
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110 | }
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111 |
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112 | /**
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113 | * Implements a workaround to <a href="https://bugs.openjdk.java.net/browse/JDK-6322854">JDK bug 6322854</a>.
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114 | * This method can be deleted after Oracle decides to fix this bug...
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115 | * @param text The {@link JTextComponent} to protect.
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116 | */
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117 | public static final void workaroundJdkBug6322854(final JTextComponent text) {
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118 | if (text != null) {
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119 | text.getActionMap().put("paste", new Action() {
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120 |
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121 | private final Action pasteAction = TransferHandler.getPasteAction();
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122 |
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123 | @Override
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124 | public void actionPerformed(ActionEvent e) {
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125 | try {
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126 | pasteAction.actionPerformed(e);
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127 | } catch (NullPointerException npe) {
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128 | Main.error("NullPointerException occured because of JDK bug 6322854. "
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129 | +"Copy/Paste operation has not been performed. Please complain to Oracle: "+
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130 | "https://bugs.openjdk.java.net/browse/JDK-6322854");
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131 | }
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132 | }
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133 |
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134 | @Override
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135 | public void setEnabled(boolean b) {
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136 | pasteAction.setEnabled(b);
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137 | }
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138 |
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139 | @Override
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140 | public void removePropertyChangeListener(PropertyChangeListener listener) {
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141 | pasteAction.removePropertyChangeListener(listener);
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142 | }
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143 |
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144 | @Override
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145 | public void putValue(String key, Object value) {
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146 | pasteAction.putValue(key, value);
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147 | }
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148 |
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149 | @Override
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150 | public boolean isEnabled() {
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151 | return pasteAction.isEnabled();
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152 | }
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153 |
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154 | @Override
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155 | public Object getValue(String key) {
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156 | return pasteAction.getValue(key);
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157 | }
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158 |
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159 | @Override
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160 | public void addPropertyChangeListener(PropertyChangeListener listener) {
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161 | pasteAction.addPropertyChangeListener(listener);
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162 | }
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163 | });
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164 | }
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165 | }
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166 | }
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