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annotate org.eclipse.jface.text/src/org/eclipse/jface/text/MarginPainter.d @ 12:bc29606a740c

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Added dwt-addons in original directory structure of eclipse.org
author Frank Benoit <benoit@tionex.de>
date Sat, 14 Mar 2009 18:23:29 +0100
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bc29606a740c Added dwt-addons in original directory structure of eclipse.org
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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 module org.eclipse.jface.text.MarginPainter;
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14
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15 import org.eclipse.jface.text.IDocumentPartitioningListener; // packageimport
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16 import org.eclipse.jface.text.DefaultTextHover; // packageimport
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17 import org.eclipse.jface.text.AbstractInformationControl; // packageimport
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18 import org.eclipse.jface.text.TextUtilities; // packageimport
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19 import org.eclipse.jface.text.IInformationControlCreatorExtension; // packageimport
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20 import org.eclipse.jface.text.AbstractInformationControlManager; // packageimport
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21 import org.eclipse.jface.text.ITextViewerExtension2; // packageimport
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22 import org.eclipse.jface.text.IDocumentPartitioner; // packageimport
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23 import org.eclipse.jface.text.DefaultIndentLineAutoEditStrategy; // packageimport
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24 import org.eclipse.jface.text.ITextSelection; // packageimport
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25 import org.eclipse.jface.text.Document; // packageimport
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26 import org.eclipse.jface.text.FindReplaceDocumentAdapterContentProposalProvider; // packageimport
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27 import org.eclipse.jface.text.ITextListener; // packageimport
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28 import org.eclipse.jface.text.BadPartitioningException; // packageimport
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29 import org.eclipse.jface.text.ITextViewerExtension5; // packageimport
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30 import org.eclipse.jface.text.IDocumentPartitionerExtension3; // packageimport
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31 import org.eclipse.jface.text.IUndoManager; // packageimport
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32 import org.eclipse.jface.text.ITextHoverExtension2; // packageimport
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33 import org.eclipse.jface.text.IRepairableDocument; // packageimport
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34 import org.eclipse.jface.text.IRewriteTarget; // packageimport
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35 import org.eclipse.jface.text.DefaultPositionUpdater; // packageimport
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36 import org.eclipse.jface.text.RewriteSessionEditProcessor; // packageimport
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37 import org.eclipse.jface.text.TextViewerHoverManager; // packageimport
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38 import org.eclipse.jface.text.DocumentRewriteSession; // packageimport
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39 import org.eclipse.jface.text.TextViewer; // packageimport
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40 import org.eclipse.jface.text.ITextViewerExtension8; // packageimport
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41 import org.eclipse.jface.text.RegExMessages; // packageimport
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42 import org.eclipse.jface.text.IDelayedInputChangeProvider; // packageimport
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43 import org.eclipse.jface.text.ITextOperationTargetExtension; // packageimport
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44 import org.eclipse.jface.text.IWidgetTokenOwner; // packageimport
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45 import org.eclipse.jface.text.IViewportListener; // packageimport
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46 import org.eclipse.jface.text.GapTextStore; // packageimport
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47 import org.eclipse.jface.text.MarkSelection; // packageimport
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48 import org.eclipse.jface.text.IDocumentPartitioningListenerExtension; // packageimport
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49 import org.eclipse.jface.text.IDocumentAdapterExtension; // packageimport
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50 import org.eclipse.jface.text.IInformationControlExtension; // packageimport
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51 import org.eclipse.jface.text.IDocumentPartitioningListenerExtension2; // packageimport
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52 import org.eclipse.jface.text.DefaultDocumentAdapter; // packageimport
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53 import org.eclipse.jface.text.ITextViewerExtension3; // packageimport
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54 import org.eclipse.jface.text.IInformationControlCreator; // packageimport
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55 import org.eclipse.jface.text.TypedRegion; // packageimport
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56 import org.eclipse.jface.text.ISynchronizable; // packageimport
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57 import org.eclipse.jface.text.IMarkRegionTarget; // packageimport
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58 import org.eclipse.jface.text.TextViewerUndoManager; // packageimport
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59 import org.eclipse.jface.text.IRegion; // packageimport
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60 import org.eclipse.jface.text.IInformationControlExtension2; // packageimport
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61 import org.eclipse.jface.text.IDocumentExtension4; // packageimport
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62 import org.eclipse.jface.text.IDocumentExtension2; // packageimport
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63 import org.eclipse.jface.text.IDocumentPartitionerExtension2; // packageimport
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64 import org.eclipse.jface.text.Assert; // packageimport
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65 import org.eclipse.jface.text.DefaultInformationControl; // packageimport
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66 import org.eclipse.jface.text.IWidgetTokenOwnerExtension; // packageimport
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67 import org.eclipse.jface.text.DocumentClone; // packageimport
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68 import org.eclipse.jface.text.DefaultUndoManager; // packageimport
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69 import org.eclipse.jface.text.IFindReplaceTarget; // packageimport
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70 import org.eclipse.jface.text.IAutoEditStrategy; // packageimport
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71 import org.eclipse.jface.text.ILineTrackerExtension; // packageimport
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72 import org.eclipse.jface.text.IUndoManagerExtension; // packageimport
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73 import org.eclipse.jface.text.TextSelection; // packageimport
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74 import org.eclipse.jface.text.DefaultAutoIndentStrategy; // packageimport
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75 import org.eclipse.jface.text.IAutoIndentStrategy; // packageimport
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76 import org.eclipse.jface.text.IPainter; // packageimport
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77 import org.eclipse.jface.text.IInformationControl; // packageimport
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78 import org.eclipse.jface.text.IInformationControlExtension3; // packageimport
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79 import org.eclipse.jface.text.ITextViewerExtension6; // packageimport
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80 import org.eclipse.jface.text.IInformationControlExtension4; // packageimport
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81 import org.eclipse.jface.text.DefaultLineTracker; // packageimport
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82 import org.eclipse.jface.text.IDocumentInformationMappingExtension; // packageimport
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83 import org.eclipse.jface.text.IRepairableDocumentExtension; // packageimport
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84 import org.eclipse.jface.text.ITextHover; // packageimport
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85 import org.eclipse.jface.text.FindReplaceDocumentAdapter; // packageimport
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86 import org.eclipse.jface.text.ILineTracker; // packageimport
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87 import org.eclipse.jface.text.Line; // packageimport
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88 import org.eclipse.jface.text.ITextViewerExtension; // packageimport
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89 import org.eclipse.jface.text.IDocumentAdapter; // packageimport
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90 import org.eclipse.jface.text.TextEvent; // packageimport
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91 import org.eclipse.jface.text.BadLocationException; // packageimport
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92 import org.eclipse.jface.text.AbstractDocument; // packageimport
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93 import org.eclipse.jface.text.AbstractLineTracker; // packageimport
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94 import org.eclipse.jface.text.TreeLineTracker; // packageimport
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95 import org.eclipse.jface.text.ITextPresentationListener; // packageimport
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96 import org.eclipse.jface.text.Region; // packageimport
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97 import org.eclipse.jface.text.ITextViewer; // packageimport
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98 import org.eclipse.jface.text.IDocumentInformationMapping; // packageimport
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99 import org.eclipse.jface.text.IPaintPositionManager; // packageimport
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100 import org.eclipse.jface.text.TextPresentation; // packageimport
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101 import org.eclipse.jface.text.IFindReplaceTargetExtension; // packageimport
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102 import org.eclipse.jface.text.ISlaveDocumentManagerExtension; // packageimport
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103 import org.eclipse.jface.text.ISelectionValidator; // packageimport
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104 import org.eclipse.jface.text.IDocumentExtension; // packageimport
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105 import org.eclipse.jface.text.PropagatingFontFieldEditor; // packageimport
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106 import org.eclipse.jface.text.ConfigurableLineTracker; // packageimport
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107 import org.eclipse.jface.text.SlaveDocumentEvent; // packageimport
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108 import org.eclipse.jface.text.IDocumentListener; // packageimport
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109 import org.eclipse.jface.text.PaintManager; // packageimport
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110 import org.eclipse.jface.text.IFindReplaceTargetExtension3; // packageimport
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111 import org.eclipse.jface.text.ITextDoubleClickStrategy; // packageimport
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112 import org.eclipse.jface.text.IDocumentExtension3; // packageimport
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113 import org.eclipse.jface.text.Position; // packageimport
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114 import org.eclipse.jface.text.TextMessages; // packageimport
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115 import org.eclipse.jface.text.CopyOnWriteTextStore; // packageimport
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116 import org.eclipse.jface.text.WhitespaceCharacterPainter; // packageimport
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117 import org.eclipse.jface.text.IPositionUpdater; // packageimport
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118 import org.eclipse.jface.text.DefaultTextDoubleClickStrategy; // packageimport
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119 import org.eclipse.jface.text.ListLineTracker; // packageimport
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120 import org.eclipse.jface.text.ITextInputListener; // packageimport
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121 import org.eclipse.jface.text.BadPositionCategoryException; // packageimport
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122 import org.eclipse.jface.text.IWidgetTokenKeeperExtension; // packageimport
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123 import org.eclipse.jface.text.IInputChangedListener; // packageimport
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124 import org.eclipse.jface.text.ITextOperationTarget; // packageimport
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125 import org.eclipse.jface.text.IDocumentInformationMappingExtension2; // packageimport
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126 import org.eclipse.jface.text.ITextViewerExtension7; // packageimport
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127 import org.eclipse.jface.text.IInformationControlExtension5; // packageimport
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128 import org.eclipse.jface.text.IDocumentRewriteSessionListener; // packageimport
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129 import org.eclipse.jface.text.JFaceTextUtil; // packageimport
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130 import org.eclipse.jface.text.AbstractReusableInformationControlCreator; // packageimport
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131 import org.eclipse.jface.text.TabsToSpacesConverter; // packageimport
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132 import org.eclipse.jface.text.CursorLinePainter; // packageimport
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133 import org.eclipse.jface.text.ITextHoverExtension; // packageimport
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134 import org.eclipse.jface.text.IEventConsumer; // packageimport
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135 import org.eclipse.jface.text.IDocument; // packageimport
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136 import org.eclipse.jface.text.IWidgetTokenKeeper; // packageimport
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137 import org.eclipse.jface.text.DocumentCommand; // packageimport
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138 import org.eclipse.jface.text.TypedPosition; // packageimport
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139 import org.eclipse.jface.text.IEditingSupportRegistry; // packageimport
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140 import org.eclipse.jface.text.IDocumentPartitionerExtension; // packageimport
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141 import org.eclipse.jface.text.AbstractHoverInformationControlManager; // packageimport
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142 import org.eclipse.jface.text.IEditingSupport; // packageimport
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143 import org.eclipse.jface.text.IMarkSelection; // packageimport
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144 import org.eclipse.jface.text.ISlaveDocumentManager; // packageimport
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145 import org.eclipse.jface.text.DocumentEvent; // packageimport
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146 import org.eclipse.jface.text.DocumentPartitioningChangedEvent; // packageimport
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147 import org.eclipse.jface.text.ITextStore; // packageimport
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148 import org.eclipse.jface.text.JFaceTextMessages; // packageimport
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149 import org.eclipse.jface.text.DocumentRewriteSessionEvent; // packageimport
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150 import org.eclipse.jface.text.SequentialRewriteTextStore; // packageimport
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151 import org.eclipse.jface.text.DocumentRewriteSessionType; // packageimport
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152 import org.eclipse.jface.text.TextAttribute; // packageimport
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153 import org.eclipse.jface.text.ITextViewerExtension4; // packageimport
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154 import org.eclipse.jface.text.ITypedRegion; // packageimport
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155
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156
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157 import java.lang.all;
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158 import java.util.Set;
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159
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160
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161 import org.eclipse.swt.SWT;
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162 import org.eclipse.swt.custom.StyledText;
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163 import org.eclipse.swt.events.PaintEvent;
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164 import org.eclipse.swt.events.PaintListener;
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165 import org.eclipse.swt.graphics.Color;
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166 import org.eclipse.swt.graphics.GC;
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167 import org.eclipse.swt.graphics.Rectangle;
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168
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169
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170 /**
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171 * Paints a vertical line (margin line) after a given column respecting the text
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172 * viewer's font.
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173 * <p>
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174 * Clients usually instantiate and configure objects of this class.</p>
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175 * <p>
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176 * This class is not intended to be subclassed.</p>
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177 *
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178 * @since 2.1
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179 * @noextend This class is not intended to be subclassed by clients.
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180 */
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181 public class MarginPainter : IPainter, PaintListener {
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182
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183 /** The widget of the text viewer */
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184 private StyledText fTextWidget;
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185
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186 /** The column after which to paint the line, default value <code>80</code> */
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187 private int fMarginWidth= 80;
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188 /** The color in which to paint the line */
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189 private Color fColor;
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190 /** The line style of the line to be painted, default value <code>SWT.LINE_SOLID</code> */
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191 private int fLineStyle= SWT.LINE_SOLID;
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192 /** The line width of the line to be painted, default value <code>1</code> */
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193 private int fLineWidth= 0; // NOTE: 0 means width is 1 but with optimized performance
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194 /** The cached x-offset of the <code>fMarginWidth</code> for the current font */
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195 private int fCachedWidgetX= -1;
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196 /** The active state of this painter */
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197 private bool fIsActive= false;
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198
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199 /**
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200 * Creates a new painter for the given text viewer.
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201 *
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202 * @param textViewer the text viewer
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203 */
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204 public this(ITextViewer textViewer) {
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205 fTextWidget= textViewer.getTextWidget();
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206 }
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207
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208 /**
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209 * Sets the column after which to draw the margin line.
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210 *
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211 * @param width the column
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212 */
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213 public void setMarginRulerColumn(int width) {
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214 fMarginWidth= width;
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215 initialize();
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216 }
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217
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218 /**
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219 * Sets the line style of the margin line.
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220 *
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221 * @param lineStyle a <code>SWT</code> style constant describing the line style
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222 */
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223 public void setMarginRulerStyle(int lineStyle) {
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224 fLineStyle= lineStyle;
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225 }
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226
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227 /**
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228 * Sets the line width of the margin line.
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229 *
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230 * @param lineWidth the line width
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231 */
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232 public void setMarginRulerWidth(int lineWidth) {
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233 if (lineWidth is 1)
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234 lineWidth= 0; // NOTE: 0 means width is 1 but with optimized performance
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235 fLineWidth= lineWidth;
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236 }
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237
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238 /**
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239 * Sets the color of the margin line. Must be called before <code>paint</code> is called the first time.
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240 *
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241 * @param color the color
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242 */
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243 public void setMarginRulerColor(Color color) {
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244 fColor= color;
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245 }
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246
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247 /**
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248 * Initializes this painter, by flushing and recomputing all caches and causing
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249 * the widget to be redrawn. Must be called explicitly when font of text widget changes.
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250 */
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251 public void initialize() {
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252 computeWidgetX();
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253 fTextWidget.redraw();
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254 }
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255
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256 /**
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257 * Computes and remembers the x-offset of the margin column for the
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258 * current widget font.
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259 */
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260 private void computeWidgetX() {
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261 GC gc= new GC(fTextWidget);
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262 int pixels= gc.getFontMetrics().getAverageCharWidth();
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263 gc.dispose();
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264
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265 fCachedWidgetX= pixels * fMarginWidth;
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266 }
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267
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268 /*
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269 * @see IPainter#deactivate(bool)
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270 */
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271 public void deactivate(bool redraw) {
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272 if (fIsActive) {
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273 fIsActive= false;
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274 fCachedWidgetX= -1;
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275 fTextWidget.removePaintListener(this);
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276 if (redraw)
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277 fTextWidget.redraw();
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278 }
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279 }
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280
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281 /*
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282 * @see IPainter#dispose()
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283 */
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284 public void dispose() {
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285 fTextWidget= null;
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286 }
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287
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288 /*
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289 * @see IPainter#paint(int)
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290 */
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291 public void paint(int reason) {
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292 if (!fIsActive) {
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293 fIsActive= true;
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294 fTextWidget.addPaintListener(this);
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295 if (fCachedWidgetX is -1)
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296 computeWidgetX();
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297 fTextWidget.redraw();
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298 } else if (CONFIGURATION is reason || INTERNAL is reason)
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299 fTextWidget.redraw();
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300 }
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301
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302 /*
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303 * @see org.eclipse.swt.events.PaintListener#paintControl(org.eclipse.swt.events.PaintEvent)
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304 */
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305 public void paintControl(PaintEvent e) {
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306 if (fTextWidget !is null) {
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307 int x= fCachedWidgetX - fTextWidget.getHorizontalPixel();
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308 if (x >= 0) {
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309 Rectangle area= fTextWidget.getClientArea();
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310 e.gc.setForeground(fColor);
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311 e.gc.setLineStyle(fLineStyle);
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312 e.gc.setLineWidth(fLineWidth);
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313 e.gc.drawLine(x, 0, x, area.height);
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314 }
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315 }
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316 }
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317
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318 /*
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319 * @see org.eclipse.jface.text.IPainter#setPositionManager(org.eclipse.jface.text.IPaintPositionManager)
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320 */
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321 public void setPositionManager(IPaintPositionManager manager) {
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322 }
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323 }