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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2008 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13
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131
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14
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15 import dwtx.jface.text.IDocumentPartitioningListener; // packageimport
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16 import dwtx.jface.text.DefaultTextHover; // packageimport
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17 import dwtx.jface.text.AbstractInformationControl; // packageimport
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18 import dwtx.jface.text.TextUtilities; // packageimport
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19 import dwtx.jface.text.IInformationControlCreatorExtension; // packageimport
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20 import dwtx.jface.text.AbstractInformationControlManager; // packageimport
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21 import dwtx.jface.text.ITextViewerExtension2; // packageimport
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22 import dwtx.jface.text.IDocumentPartitioner; // packageimport
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23 import dwtx.jface.text.DefaultIndentLineAutoEditStrategy; // packageimport
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24 import dwtx.jface.text.ITextSelection; // packageimport
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25 import dwtx.jface.text.Document; // packageimport
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26 import dwtx.jface.text.FindReplaceDocumentAdapterContentProposalProvider; // packageimport
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27 import dwtx.jface.text.ITextListener; // packageimport
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28 import dwtx.jface.text.BadPartitioningException; // packageimport
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29 import dwtx.jface.text.ITextViewerExtension5; // packageimport
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30 import dwtx.jface.text.IDocumentPartitionerExtension3; // packageimport
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31 import dwtx.jface.text.IUndoManager; // packageimport
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32 import dwtx.jface.text.ITextHoverExtension2; // packageimport
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33 import dwtx.jface.text.IRepairableDocument; // packageimport
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34 import dwtx.jface.text.IRewriteTarget; // packageimport
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35 import dwtx.jface.text.DefaultPositionUpdater; // packageimport
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36 import dwtx.jface.text.RewriteSessionEditProcessor; // packageimport
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37 import dwtx.jface.text.TextViewerHoverManager; // packageimport
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38 import dwtx.jface.text.DocumentRewriteSession; // packageimport
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39 import dwtx.jface.text.TextViewer; // packageimport
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40 import dwtx.jface.text.ITextViewerExtension8; // packageimport
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41 import dwtx.jface.text.RegExMessages; // packageimport
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42 import dwtx.jface.text.IDelayedInputChangeProvider; // packageimport
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43 import dwtx.jface.text.ITextOperationTargetExtension; // packageimport
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44 import dwtx.jface.text.IWidgetTokenOwner; // packageimport
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45 import dwtx.jface.text.IViewportListener; // packageimport
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46 import dwtx.jface.text.GapTextStore; // packageimport
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47 import dwtx.jface.text.MarkSelection; // packageimport
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48 import dwtx.jface.text.IDocumentPartitioningListenerExtension; // packageimport
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49 import dwtx.jface.text.IDocumentAdapterExtension; // packageimport
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50 import dwtx.jface.text.IInformationControlExtension; // packageimport
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51 import dwtx.jface.text.IDocumentPartitioningListenerExtension2; // packageimport
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52 import dwtx.jface.text.DefaultDocumentAdapter; // packageimport
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53 import dwtx.jface.text.ITextViewerExtension3; // packageimport
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54 import dwtx.jface.text.IInformationControlCreator; // packageimport
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55 import dwtx.jface.text.TypedRegion; // packageimport
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56 import dwtx.jface.text.ISynchronizable; // packageimport
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57 import dwtx.jface.text.IMarkRegionTarget; // packageimport
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58 import dwtx.jface.text.TextViewerUndoManager; // packageimport
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59 import dwtx.jface.text.IRegion; // packageimport
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60 import dwtx.jface.text.IInformationControlExtension2; // packageimport
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61 import dwtx.jface.text.IDocumentExtension4; // packageimport
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62 import dwtx.jface.text.IDocumentExtension2; // packageimport
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63 import dwtx.jface.text.IDocumentPartitionerExtension2; // packageimport
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64 import dwtx.jface.text.Assert; // packageimport
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65 import dwtx.jface.text.DefaultInformationControl; // packageimport
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66 import dwtx.jface.text.IWidgetTokenOwnerExtension; // packageimport
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67 import dwtx.jface.text.DocumentClone; // packageimport
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68 import dwtx.jface.text.DefaultUndoManager; // packageimport
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69 import dwtx.jface.text.IFindReplaceTarget; // packageimport
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70 import dwtx.jface.text.IAutoEditStrategy; // packageimport
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71 import dwtx.jface.text.ILineTrackerExtension; // packageimport
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72 import dwtx.jface.text.IUndoManagerExtension; // packageimport
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73 import dwtx.jface.text.TextSelection; // packageimport
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74 import dwtx.jface.text.DefaultAutoIndentStrategy; // packageimport
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75 import dwtx.jface.text.IAutoIndentStrategy; // packageimport
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76 import dwtx.jface.text.IPainter; // packageimport
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77 import dwtx.jface.text.IInformationControl; // packageimport
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78 import dwtx.jface.text.IInformationControlExtension3; // packageimport
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79 import dwtx.jface.text.ITextViewerExtension6; // packageimport
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80 import dwtx.jface.text.IInformationControlExtension4; // packageimport
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81 import dwtx.jface.text.DefaultLineTracker; // packageimport
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82 import dwtx.jface.text.IDocumentInformationMappingExtension; // packageimport
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83 import dwtx.jface.text.IRepairableDocumentExtension; // packageimport
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84 import dwtx.jface.text.ITextHover; // packageimport
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85 import dwtx.jface.text.FindReplaceDocumentAdapter; // packageimport
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86 import dwtx.jface.text.ILineTracker; // packageimport
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87 import dwtx.jface.text.Line; // packageimport
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88 import dwtx.jface.text.ITextViewerExtension; // packageimport
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89 import dwtx.jface.text.IDocumentAdapter; // packageimport
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90 import dwtx.jface.text.TextEvent; // packageimport
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91 import dwtx.jface.text.BadLocationException; // packageimport
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92 import dwtx.jface.text.AbstractDocument; // packageimport
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93 import dwtx.jface.text.AbstractLineTracker; // packageimport
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94 import dwtx.jface.text.TreeLineTracker; // packageimport
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95 import dwtx.jface.text.ITextPresentationListener; // packageimport
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96 import dwtx.jface.text.Region; // packageimport
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97 import dwtx.jface.text.ITextViewer; // packageimport
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98 import dwtx.jface.text.IDocumentInformationMapping; // packageimport
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99 import dwtx.jface.text.MarginPainter; // packageimport
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100 import dwtx.jface.text.IPaintPositionManager; // packageimport
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101 import dwtx.jface.text.TextPresentation; // packageimport
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102 import dwtx.jface.text.IFindReplaceTargetExtension; // packageimport
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103 import dwtx.jface.text.ISlaveDocumentManagerExtension; // packageimport
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104 import dwtx.jface.text.ISelectionValidator; // packageimport
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105 import dwtx.jface.text.IDocumentExtension; // packageimport
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106 import dwtx.jface.text.PropagatingFontFieldEditor; // packageimport
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107 import dwtx.jface.text.ConfigurableLineTracker; // packageimport
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108 import dwtx.jface.text.SlaveDocumentEvent; // packageimport
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109 import dwtx.jface.text.IDocumentListener; // packageimport
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110 import dwtx.jface.text.PaintManager; // packageimport
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111 import dwtx.jface.text.IFindReplaceTargetExtension3; // packageimport
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112 import dwtx.jface.text.ITextDoubleClickStrategy; // packageimport
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113 import dwtx.jface.text.IDocumentExtension3; // packageimport
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114 import dwtx.jface.text.Position; // packageimport
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115 import dwtx.jface.text.TextMessages; // packageimport
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116 import dwtx.jface.text.CopyOnWriteTextStore; // packageimport
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117 import dwtx.jface.text.WhitespaceCharacterPainter; // packageimport
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118 import dwtx.jface.text.IPositionUpdater; // packageimport
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119 import dwtx.jface.text.ListLineTracker; // packageimport
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120 import dwtx.jface.text.ITextInputListener; // packageimport
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121 import dwtx.jface.text.BadPositionCategoryException; // packageimport
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122 import dwtx.jface.text.IWidgetTokenKeeperExtension; // packageimport
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123 import dwtx.jface.text.IInputChangedListener; // packageimport
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124 import dwtx.jface.text.ITextOperationTarget; // packageimport
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125 import dwtx.jface.text.IDocumentInformationMappingExtension2; // packageimport
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126 import dwtx.jface.text.ITextViewerExtension7; // packageimport
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127 import dwtx.jface.text.IInformationControlExtension5; // packageimport
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128 import dwtx.jface.text.IDocumentRewriteSessionListener; // packageimport
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129 import dwtx.jface.text.JFaceTextUtil; // packageimport
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130 import dwtx.jface.text.AbstractReusableInformationControlCreator; // packageimport
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131 import dwtx.jface.text.TabsToSpacesConverter; // packageimport
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132 import dwtx.jface.text.CursorLinePainter; // packageimport
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133 import dwtx.jface.text.ITextHoverExtension; // packageimport
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134 import dwtx.jface.text.IEventConsumer; // packageimport
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135 import dwtx.jface.text.IDocument; // packageimport
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136 import dwtx.jface.text.IWidgetTokenKeeper; // packageimport
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137 import dwtx.jface.text.DocumentCommand; // packageimport
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138 import dwtx.jface.text.TypedPosition; // packageimport
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139 import dwtx.jface.text.IEditingSupportRegistry; // packageimport
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140 import dwtx.jface.text.IDocumentPartitionerExtension; // packageimport
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141 import dwtx.jface.text.AbstractHoverInformationControlManager; // packageimport
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142 import dwtx.jface.text.IEditingSupport; // packageimport
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143 import dwtx.jface.text.IMarkSelection; // packageimport
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144 import dwtx.jface.text.ISlaveDocumentManager; // packageimport
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145 import dwtx.jface.text.DocumentEvent; // packageimport
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146 import dwtx.jface.text.DocumentPartitioningChangedEvent; // packageimport
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147 import dwtx.jface.text.ITextStore; // packageimport
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148 import dwtx.jface.text.JFaceTextMessages; // packageimport
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149 import dwtx.jface.text.DocumentRewriteSessionEvent; // packageimport
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150 import dwtx.jface.text.SequentialRewriteTextStore; // packageimport
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151 import dwtx.jface.text.DocumentRewriteSessionType; // packageimport
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152 import dwtx.jface.text.TextAttribute; // packageimport
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153 import dwtx.jface.text.ITextViewerExtension4; // packageimport
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154 import dwtx.jface.text.ITypedRegion; // packageimport
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155
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129
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156 module dwtx.jface.text.DefaultTextDoubleClickStrategy;
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157
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158 import dwt.dwthelper.utils;
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159
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160 import java.text.CharacterIterator;
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161
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162 import com.ibm.icu.text.BreakIterator;
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163
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164 /**
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165 * Standard implementation of
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166 * {@link dwtx.jface.text.ITextDoubleClickStrategy}.
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167 * <p>
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168 * Selects words using <code>java.text.BreakIterator</code> for the default
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169 * locale.</p>
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170 * <p>
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171 * This class is not intended to be subclassed.
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172 * </p>
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173 *
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174 * @see java.text.BreakIterator
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175 * @noextend This class is not intended to be subclassed by clients.
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176 */
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177 public class DefaultTextDoubleClickStrategy : ITextDoubleClickStrategy {
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178
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179
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180 /**
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181 * Implements a character iterator that works directly on
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182 * instances of <code>IDocument</code>. Used to collaborate with
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183 * the break iterator.
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184 *
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185 * @see IDocument
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186 * @since 2.0
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187 */
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188 static class DocumentCharacterIterator : CharacterIterator {
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189
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190 /** Document to iterate over. */
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191 private IDocument fDocument;
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192 /** Start offset of iteration. */
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193 private int fOffset= -1;
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194 /** End offset of iteration. */
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195 private int fEndOffset= -1;
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196 /** Current offset of iteration. */
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197 private int fIndex= -1;
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198
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199 /** Creates a new document iterator. */
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200 public DocumentCharacterIterator() {
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201 }
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202
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203 /**
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204 * Configures this document iterator with the document section to be visited.
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205 *
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206 * @param document the document to be iterated
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207 * @param iteratorRange the range in the document to be iterated
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208 */
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209 public void setDocument(IDocument document, IRegion iteratorRange) {
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210 fDocument= document;
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211 fOffset= iteratorRange.getOffset();
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212 fEndOffset= fOffset + iteratorRange.getLength();
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213 }
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214
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215 /*
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216 * @see CharacterIterator#first()
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217 */
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218 public char first() {
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219 fIndex= fOffset;
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220 return current();
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221 }
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222
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223 /*
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224 * @see CharacterIterator#last()
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225 */
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226 public char last() {
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227 fIndex= fOffset < fEndOffset ? fEndOffset -1 : fEndOffset;
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228 return current();
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229 }
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230
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231 /*
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232 * @see CharacterIterator#current()
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233 */
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234 public char current() {
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235 if (fOffset <= fIndex && fIndex < fEndOffset) {
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236 try {
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237 return fDocument.getChar(fIndex);
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238 } catch (BadLocationException x) {
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239 }
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240 }
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241 return DONE;
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242 }
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243
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244 /*
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245 * @see CharacterIterator#next()
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246 */
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247 public char next() {
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248 ++fIndex;
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249 int end= getEndIndex();
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250 if (fIndex >= end) {
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251 fIndex= end;
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252 return DONE;
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253 }
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254 return current();
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255 }
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256
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257 /*
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258 * @see CharacterIterator#previous()
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259 */
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260 public char previous() {
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261 if (fIndex is fOffset)
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262 return DONE;
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263
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264 if (fIndex > fOffset)
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265 -- fIndex;
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266
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267 return current();
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268 }
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269
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270 /*
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271 * @see CharacterIterator#setIndex(int)
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272 */
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273 public char setIndex(int index) {
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274 fIndex= index;
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275 return current();
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276 }
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277
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278 /*
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279 * @see CharacterIterator#getBeginIndex()
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280 */
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281 public int getBeginIndex() {
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282 return fOffset;
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283 }
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284
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285 /*
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286 * @see CharacterIterator#getEndIndex()
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287 */
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288 public int getEndIndex() {
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289 return fEndOffset;
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290 }
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291
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292 /*
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293 * @see CharacterIterator#getIndex()
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294 */
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295 public int getIndex() {
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296 return fIndex;
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297 }
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298
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299 /*
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300 * @see CharacterIterator#clone()
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301 */
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302 public Object clone() {
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303 DocumentCharacterIterator i= new DocumentCharacterIterator();
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304 i.fDocument= fDocument;
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305 i.fIndex= fIndex;
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306 i.fOffset= fOffset;
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307 i.fEndOffset= fEndOffset;
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308 return i;
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309 }
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310 }
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311
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312
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313 /**
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314 * The document character iterator used by this strategy.
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315 * @since 2.0
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316 */
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317 private DocumentCharacterIterator fDocIter= new DocumentCharacterIterator();
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318
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319
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320 /**
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321 * Creates a new default text double click strategy.
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322 */
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323 public DefaultTextDoubleClickStrategy() {
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324 super();
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325 }
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326
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327 /*
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328 * @see dwtx.jface.text.ITextDoubleClickStrategy#doubleClicked(dwtx.jface.text.ITextViewer)
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329 */
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330 public void doubleClicked(ITextViewer text) {
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331
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332 int position= text.getSelectedRange().x;
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333
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334 if (position < 0)
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335 return;
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336
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337 try {
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338
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339 IDocument document= text.getDocument();
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340 IRegion line= document.getLineInformationOfOffset(position);
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341 if (position is line.getOffset() + line.getLength())
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342 return;
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343
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344 fDocIter.setDocument(document, line);
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345
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346 BreakIterator breakIter= BreakIterator.getWordInstance();
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347 breakIter.setText(fDocIter);
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348
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349 int start= breakIter.preceding(position);
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350 if (start is BreakIterator.DONE)
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351 start= line.getOffset();
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352
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353 int end= breakIter.following(position);
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354 if (end is BreakIterator.DONE)
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355 end= line.getOffset() + line.getLength();
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356
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357 if (breakIter.isBoundary(position)) {
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358 if (end - position > position- start)
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359 start= position;
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360 else
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361 end= position;
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362 }
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363
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364 if (start !is end)
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365 text.setSelectedRange(start, end - start);
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366
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367 } catch (BadLocationException x) {
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368 }
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369 }
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370 }
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