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annotate org.eclipse.jface.text/projection/org/eclipse/jface/text/source/projection/ProjectionAnnotationHover.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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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.source.projection.ProjectionAnnotationHover;
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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.ProjectionRulerColumn; // 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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31
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32 import org.eclipse.swt.widgets.Shell;
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33 import org.eclipse.jface.resource.JFaceResources;
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34 import org.eclipse.jface.text.BadLocationException;
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35 import org.eclipse.jface.text.IDocument;
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36 import org.eclipse.jface.text.IInformationControl;
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37 import org.eclipse.jface.text.IInformationControlCreator;
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38 import org.eclipse.jface.text.IRegion;
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39 import org.eclipse.jface.text.Position;
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40 import org.eclipse.jface.text.information.IInformationProviderExtension2;
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41 import org.eclipse.jface.text.source.IAnnotationHover;
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42 import org.eclipse.jface.text.source.IAnnotationHoverExtension;
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43 import org.eclipse.jface.text.source.IAnnotationModel;
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44 import org.eclipse.jface.text.source.IAnnotationModelExtension;
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45 import org.eclipse.jface.text.source.ILineRange;
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46 import org.eclipse.jface.text.source.ISourceViewer;
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47 import org.eclipse.jface.text.source.ISourceViewerExtension2;
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48 import org.eclipse.jface.text.source.LineRange;
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49
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50 /**
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51 * Annotation hover for projection annotations.
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52 *
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53 * @since 3.0
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54 */
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55 class ProjectionAnnotationHover : IAnnotationHover, IAnnotationHoverExtension, IInformationProviderExtension2 {
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57
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58 private IInformationControlCreator fInformationControlCreator;
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59 private IInformationControlCreator fInformationPresenterControlCreator;
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60
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61 /**
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62 * Sets the hover control creator for this projection annotation hover.
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63 *
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64 * @param creator the creator
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65 */
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66 public void setHoverControlCreator(IInformationControlCreator creator) {
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67 fInformationControlCreator= creator;
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68 }
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69
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70 /**
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71 * Sets the information presenter control creator for this projection annotation hover.
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72 *
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73 * @param creator the creator
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74 * @since 3.3
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75 */
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76 public void setInformationPresenterControlCreator(IInformationControlCreator creator) {
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77 fInformationPresenterControlCreator= creator;
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78 }
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79
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80 /*
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81 * @see org.eclipse.jface.text.source.IAnnotationHover#getHoverInfo(org.eclipse.jface.text.source.ISourceViewer, int)
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82 */
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83 public String getHoverInfo(ISourceViewer sourceViewer, int lineNumber) {
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84 // this is a no-op as semantics is defined by the implementation of the annotation hover extension
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85 return null;
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86 }
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87
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88 /*
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89 * @since 3.1
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90 */
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91 private bool isCaptionLine(ProjectionAnnotation annotation, Position position, IDocument document, int line) {
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92 if (position.getOffset() > -1 && position.getLength() > -1) {
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93 try {
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94 int captionOffset;
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95 if ( cast(IProjectionPosition)position )
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96 captionOffset= (cast(IProjectionPosition) position).computeCaptionOffset(document);
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97 else
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98 captionOffset= 0;
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99 int startLine= document.getLineOfOffset(position.getOffset() + captionOffset);
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100 return line is startLine;
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101 } catch (BadLocationException x) {
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102 }
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103 }
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104 return false;
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105 }
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106
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107 private String getProjectionTextAtLine(ISourceViewer viewer, int line, int numberOfLines) {
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108
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109 IAnnotationModel model= null;
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110 if ( cast(ISourceViewerExtension2)viewer ) {
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111 ISourceViewerExtension2 viewerExtension= cast(ISourceViewerExtension2) viewer;
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112 IAnnotationModel visual= viewerExtension.getVisualAnnotationModel();
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113 if ( cast(IAnnotationModelExtension)visual ) {
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114 IAnnotationModelExtension modelExtension= cast(IAnnotationModelExtension) visual;
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115 model= modelExtension.getAnnotationModel(ProjectionSupport.PROJECTION);
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116 }
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117 }
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118
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119 if (model !is null) {
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120 try {
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121 IDocument document= viewer.getDocument();
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122 Iterator e= model.getAnnotationIterator();
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123 while (e.hasNext()) {
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124 ProjectionAnnotation annotation= cast(ProjectionAnnotation) e.next();
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125 if (!annotation.isCollapsed())
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126 continue;
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127
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128 Position position= model.getPosition(annotation);
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129 if (position is null)
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130 continue;
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131
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132 if (isCaptionLine(annotation, position, document, line))
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133 return getText(document, position.getOffset(), position.getLength(), numberOfLines);
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134
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135 }
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136 } catch (BadLocationException x) {
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137 }
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138 }
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139
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140 return null;
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141 }
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142
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143 private String getText(IDocument document, int offset, int length, int numberOfLines) {
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144 int endOffset= offset + length;
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145
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146 try {
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147 int endLine= document.getLineOfOffset(offset) + Math.max(0, numberOfLines -1);
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148 IRegion lineInfo= document.getLineInformation(endLine);
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149 endOffset= Math.min(endOffset, lineInfo.getOffset() + lineInfo.getLength());
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150 } catch (BadLocationException x) {
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151 }
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152
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153 return document.get(offset, endOffset - offset);
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154 }
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155
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156 /*
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157 * @see org.eclipse.jface.text.source.IAnnotationHoverExtension#getHoverInfo(org.eclipse.jface.text.source.ISourceViewer, org.eclipse.jface.text.source.ILineRange, int)
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158 */
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159 public Object getHoverInfo(ISourceViewer sourceViewer, ILineRange lineRange, int visibleLines) {
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160 return stringcast(getProjectionTextAtLine(sourceViewer, lineRange.getStartLine(), visibleLines));
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161 }
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162
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163 /*
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164 * @see org.eclipse.jface.text.source.IAnnotationHoverExtension#getHoverLineRange(org.eclipse.jface.text.source.ISourceViewer, int)
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165 */
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166 public ILineRange getHoverLineRange(ISourceViewer viewer, int lineNumber) {
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167 return new LineRange(lineNumber, 1);
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168 }
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169
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170 /*
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171 * @see org.eclipse.jface.text.source.IAnnotationHoverExtension#canHandleMouseCursor()
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172 */
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173 public bool canHandleMouseCursor() {
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174 return false;
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175 }
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176
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177 /*
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178 * @see org.eclipse.jface.text.source.IAnnotationHoverExtension#getHoverControlCreator()
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179 */
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180 public IInformationControlCreator getHoverControlCreator() {
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181 if (fInformationControlCreator is null) {
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182 fInformationControlCreator= new class() IInformationControlCreator {
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183 public IInformationControl createInformationControl(Shell parent) {
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184 return new SourceViewerInformationControl(parent, false, JFaceResources.TEXT_FONT, null);
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185 }
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186 };
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187 }
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188 return fInformationControlCreator;
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189 }
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190
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191 /*
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192 * @see org.eclipse.jface.text.information.IInformationProviderExtension2#getInformationPresenterControlCreator()
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193 * @since 3.3
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194 */
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195 public IInformationControlCreator getInformationPresenterControlCreator() {
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196 if (fInformationPresenterControlCreator is null) {
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197 fInformationPresenterControlCreator= new class() IInformationControlCreator {
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198 public IInformationControl createInformationControl(Shell parent) {
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199 return new SourceViewerInformationControl(parent, true, JFaceResources.TEXT_FONT, null);
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200 }
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201 };
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202 }
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203 return fInformationPresenterControlCreator;
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204 }
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205 }