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annotate org.eclipse.jface.text/projection/org/eclipse/jface/text/source/projection/ProjectionRulerColumn.d @ 104:88652073d1c2

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More work on icu
author Frank Benoit <benoit@tionex.de>
date Sat, 02 May 2009 11:27:24 +0200
parents bc29606a740c
children
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2006 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.source.projection.ProjectionRulerColumn;
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15 import org.eclipse.jface.text.source.projection.ProjectionViewer; // packageimport
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16 import org.eclipse.jface.text.source.projection.ProjectionSupport; // packageimport
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17 import org.eclipse.jface.text.source.projection.IProjectionPosition; // packageimport
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18 import org.eclipse.jface.text.source.projection.AnnotationBag; // packageimport
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19 import org.eclipse.jface.text.source.projection.ProjectionSummary; // packageimport
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20 import org.eclipse.jface.text.source.projection.ProjectionAnnotationHover; // packageimport
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21 import org.eclipse.jface.text.source.projection.ProjectionAnnotationModel; // packageimport
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22 import org.eclipse.jface.text.source.projection.SourceViewerInformationControl; // packageimport
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23 import org.eclipse.jface.text.source.projection.IProjectionListener; // packageimport
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24 import org.eclipse.jface.text.source.projection.ProjectionAnnotation; // packageimport
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27 import java.lang.all;
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28 import java.util.Iterator;
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29 import java.util.Set;
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32
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33 import org.eclipse.swt.SWT;
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34 import org.eclipse.swt.events.MouseEvent;
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35 import org.eclipse.swt.events.MouseMoveListener;
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36 import org.eclipse.swt.events.MouseTrackAdapter;
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37 import org.eclipse.swt.graphics.Color;
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38 import org.eclipse.swt.widgets.Composite;
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39 import org.eclipse.swt.widgets.Control;
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40 import org.eclipse.swt.widgets.Display;
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41 import org.eclipse.jface.text.BadLocationException;
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42 import org.eclipse.jface.text.IDocument;
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43 import org.eclipse.jface.text.Position;
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44 import org.eclipse.jface.text.source.AnnotationRulerColumn;
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45 import org.eclipse.jface.text.source.CompositeRuler;
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46 import org.eclipse.jface.text.source.IAnnotationAccess;
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47 import org.eclipse.jface.text.source.IAnnotationModel;
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48 import org.eclipse.jface.text.source.IAnnotationModelExtension;
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50
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51 /**
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52 * A ruler column for controlling the behavior of a
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53 * {@link org.eclipse.jface.text.source.projection.ProjectionViewer}.
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54 *
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55 * @since 3.0
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56 */
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57 class ProjectionRulerColumn : AnnotationRulerColumn {
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58
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59 private ProjectionAnnotation fCurrentAnnotation;
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60
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61 /**
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62 * Creates a new projection ruler column.
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63 *
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64 * @param model the column's annotation model
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65 * @param width the width in pixels
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66 * @param annotationAccess the annotation access
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67 */
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68 public this(IAnnotationModel model, int width, IAnnotationAccess annotationAccess) {
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69 super(model, width, annotationAccess);
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70 }
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71
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72 /**
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73 * Creates a new projection ruler column.
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74 *
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75 * @param width the width in pixels
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76 * @param annotationAccess the annotation access
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77 */
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78 public this(int width, IAnnotationAccess annotationAccess) {
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79 super(width, annotationAccess);
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80 }
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81
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82 /*
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83 * @see org.eclipse.jface.text.source.AnnotationRulerColumn#mouseClicked(int)
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84 */
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85 protected void mouseClicked(int line) {
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86 clearCurrentAnnotation();
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87 ProjectionAnnotation annotation= findAnnotation(line, true);
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88 if (annotation !is null) {
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89 ProjectionAnnotationModel model= cast(ProjectionAnnotationModel) getModel();
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90 model.toggleExpansionState(annotation);
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91 }
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92 }
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93
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94 /**
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95 * Returns the projection annotation of the column's annotation
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96 * model that contains the given line.
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97 *
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98 * @param line the line
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99 * @param exact <code>true</code> if the annotation range must match exactly
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100 * @return the projection annotation containing the given line
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101 */
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102 private ProjectionAnnotation findAnnotation(int line, bool exact) {
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103
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104 ProjectionAnnotation previousAnnotation= null;
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105
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106 IAnnotationModel model= getModel();
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107 if (model !is null) {
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108 IDocument document= getCachedTextViewer().getDocument();
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109
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110 int previousDistance= Integer.MAX_VALUE;
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111
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112 Iterator e= model.getAnnotationIterator();
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113 while (e.hasNext()) {
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114 Object next= e.next();
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115 if ( cast(ProjectionAnnotation)next ) {
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116 ProjectionAnnotation annotation= cast(ProjectionAnnotation) next;
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117 Position p= model.getPosition(annotation);
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118 if (p is null)
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119 continue;
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120
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121 int distance= getDistance(annotation, p, document, line);
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122 if (distance is -1)
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123 continue;
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124
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125 if (!exact) {
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126 if (distance < previousDistance) {
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127 previousAnnotation= annotation;
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128 previousDistance= distance;
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129 }
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130 } else if (distance is 0) {
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131 previousAnnotation= annotation;
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132 }
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133 }
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134 }
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135 }
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136
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137 return previousAnnotation;
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138 }
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139
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140 /**
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141 * Returns the distance of the given line to the start line of the given position in the given document. The distance is
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142 * <code>-1</code> when the line is not included in the given position.
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143 *
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144 * @param annotation the annotation
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145 * @param position the position
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146 * @param document the document
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147 * @param line the line
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148 * @return <code>-1</code> if line is not contained, a position number otherwise
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149 */
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150 private int getDistance(ProjectionAnnotation annotation, Position position, IDocument document, int line) {
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151 if (position.getOffset() > -1 && position.getLength() > -1) {
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152 try {
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153 int startLine= document.getLineOfOffset(position.getOffset());
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154 int endLine= document.getLineOfOffset(position.getOffset() + position.getLength());
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155 if (startLine <= line && line < endLine) {
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156 if (annotation.isCollapsed()) {
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157 int captionOffset;
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158 if ( cast(IProjectionPosition)position )
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159 captionOffset= (cast(IProjectionPosition) position).computeCaptionOffset(document);
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160 else
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161 captionOffset= 0;
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162
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163 int captionLine= document.getLineOfOffset(position.getOffset() + captionOffset);
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164 if (startLine <= captionLine && captionLine < endLine)
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165 return Math.abs(line - captionLine);
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166 }
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167 return line - startLine;
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168 }
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169 } catch (BadLocationException x) {
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170 }
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171 }
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172 return -1;
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173 }
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174
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175 private bool clearCurrentAnnotation() {
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176 if (fCurrentAnnotation !is null) {
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177 fCurrentAnnotation.setRangeIndication(false);
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178 fCurrentAnnotation= null;
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179 return true;
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180 }
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181 return false;
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182 }
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183
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184 /*
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185 * @see org.eclipse.jface.text.source.IVerticalRulerColumn#createControl(org.eclipse.jface.text.source.CompositeRuler, org.eclipse.swt.widgets.Composite)
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186 */
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187 public Control createControl(CompositeRuler parentRuler, Composite parentControl) {
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188 Control control= super.createControl(parentRuler, parentControl);
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189
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190 // set background
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191 Display display= parentControl.getDisplay();
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192 Color background= display.getSystemColor(SWT.COLOR_LIST_BACKGROUND);
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193 control.setBackground(background);
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194
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195 // install hover listener
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196 control.addMouseTrackListener(new class() MouseTrackAdapter {
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197 public void mouseExit(MouseEvent e) {
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198 if (clearCurrentAnnotation())
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199 redraw();
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200 }
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201 });
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202
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203 // install mouse move listener
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204 control.addMouseMoveListener(new class() MouseMoveListener {
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205 public void mouseMove(MouseEvent e) {
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206 bool redraw_= false;
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207 ProjectionAnnotation annotation= findAnnotation(toDocumentLineNumber(e.y), false);
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208 if (annotation !is fCurrentAnnotation) {
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209 if (fCurrentAnnotation !is null) {
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210 fCurrentAnnotation.setRangeIndication(false);
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211 redraw_= true;
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212 }
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213 fCurrentAnnotation= annotation;
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214 if (fCurrentAnnotation !is null && !fCurrentAnnotation.isCollapsed()) {
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215 fCurrentAnnotation.setRangeIndication(true);
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216 redraw_= true;
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217 }
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218 }
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219 if (redraw_)
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220 redraw();
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221 }
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222 });
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223 return control;
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224 }
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225
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226 /*
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227 * @see org.eclipse.jface.text.source.AnnotationRulerColumn#setModel(org.eclipse.jface.text.source.IAnnotationModel)
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228 */
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229 public void setModel(IAnnotationModel model) {
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230 if ( cast(IAnnotationModelExtension)model ) {
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231 IAnnotationModelExtension extension= cast(IAnnotationModelExtension) model;
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232 model= extension.getAnnotationModel(ProjectionSupport.PROJECTION);
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233 }
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234 super.setModel(model);
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235 }
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236
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237 /*
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238 * @see org.eclipse.jface.text.source.AnnotationRulerColumn#isPropagatingMouseListener()
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239 */
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240 protected bool isPropagatingMouseListener() {
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241 return false;
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242 }
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243
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244 /*
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245 * @see org.eclipse.jface.text.source.AnnotationRulerColumn#hasAnnotation(int)
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246 */
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247 protected bool hasAnnotation(int lineNumber) {
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248 return findAnnotation(lineNumber, true) !is null;
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249 }
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250 }