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annotate org.eclipse.ui.forms/src/org/eclipse/ui/internal/forms/widgets/Paragraph.d @ 16:dbfb303e8fb0

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first complete successful compile (win-only)
author Frank Benoit <benoit@tionex.de>
date Wed, 18 Mar 2009 08:56:47 +0100
parents bc29606a740c
children
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2007 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.ui.internal.forms.widgets.Paragraph;
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14
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15 import org.eclipse.ui.internal.forms.widgets.ParagraphSegment;
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16 import org.eclipse.ui.internal.forms.widgets.Locator;
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17 import org.eclipse.ui.internal.forms.widgets.IHyperlinkSegment;
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18 import org.eclipse.ui.internal.forms.widgets.SelectionData;
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19 import org.eclipse.ui.internal.forms.widgets.TextSegment;
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20 import org.eclipse.ui.internal.forms.widgets.TextHyperlinkSegment;
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21
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22 import org.eclipse.swt.graphics.GC;
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23 import org.eclipse.swt.graphics.Rectangle;
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24 import org.eclipse.ui.forms.HyperlinkSettings;
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25
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26 import java.lang.all;
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27 import java.util.Vector;
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28 import java.util.Hashtable;
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29 import java.util.ArrayList;
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30 import java.util.Set;
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31 import tango.io.model.IFile;
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32
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33 import tango.text.Text;
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34
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35 /**
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36 * @version 1.0
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37 * @author
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38 */
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39 public class Paragraph {
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40 public static const String HTTP = "http://"; //$NON-NLS-1$
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41
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42 private Vector segments;
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43
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44 private bool addVerticalSpace = true;
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45
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46 public this(bool addVerticalSpace) {
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47 this.addVerticalSpace = addVerticalSpace;
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48 }
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49
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50 public int getIndent() {
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51 return 0;
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52 }
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53
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54 public bool getAddVerticalSpace() {
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55 return addVerticalSpace;
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56 }
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57
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58 /*
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59 * @see IParagraph#getSegments()
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60 */
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61 public ParagraphSegment[] getSegments() {
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62 if (segments is null)
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63 return null;
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64 return arraycast!(ParagraphSegment)(segments
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65 .toArray());
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66 }
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67
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68 public void addSegment(ParagraphSegment segment) {
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69 if (segments is null)
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70 segments = new Vector;
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71 segments.add(segment);
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72 }
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73
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74 public void parseRegularText(String text, bool expandURLs, bool wrapAllowed,
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75 HyperlinkSettings settings, String fontId) {
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76 parseRegularText(text, expandURLs, wrapAllowed, settings, fontId, null);
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77 }
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78
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79 public void parseRegularText(String text, bool expandURLs, bool wrapAllowed,
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80 HyperlinkSettings settings, String fontId, String colorId) {
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81 if (text.length is 0)
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82 return;
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83 if (expandURLs) {
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84 int loc = text.indexOf(HTTP);
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85
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86 if (loc is -1)
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87 addSegment(new TextSegment(text, fontId, colorId, wrapAllowed));
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88 else {
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89 int textLoc = 0;
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90 while (loc !is -1) {
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91 addSegment(new TextSegment(text.substring(textLoc, loc),
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92 fontId, colorId, wrapAllowed));
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93 bool added = false;
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94 for (textLoc = loc; textLoc < text.length; textLoc++) {
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95 char c = text.charAt(textLoc);
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96 if (CharacterIsWhitespace(c)) {
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97 addHyperlinkSegment(text.substring(loc, textLoc),
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98 settings, fontId);
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99 added = true;
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100 break;
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101 }
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102 }
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103 if (!added) {
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104 // there was no space - just end of text
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105 addHyperlinkSegment(text.substring(loc), settings,
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106 fontId);
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107 break;
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108 }
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109 loc = text.indexOf(HTTP, textLoc);
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110 }
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111 if (textLoc < text.length) {
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112 addSegment(new TextSegment(text.substring(textLoc), fontId,
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113 colorId, wrapAllowed));
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114 }
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115 }
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116 } else {
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117 addSegment(new TextSegment(text, fontId, colorId, wrapAllowed));
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118 }
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119 }
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120
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121 private void addHyperlinkSegment(String text, HyperlinkSettings settings,
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122 String fontId) {
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123 TextHyperlinkSegment hs = new TextHyperlinkSegment(text, settings,
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124 fontId);
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125 hs.setWordWrapAllowed(false);
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126 hs.setHref(text);
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127 addSegment(hs);
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128 }
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129
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130 protected void computeRowHeights(GC gc, int width, Locator loc,
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131 int lineHeight, Hashtable resourceTable) {
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132 ParagraphSegment[] segments = getSegments();
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133 // compute heights
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134 Locator hloc = loc.create();
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135 ArrayList heights = new ArrayList();
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136 hloc.heights = heights;
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137 hloc.rowCounter = 0;
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138 int innerWidth = width - loc.marginWidth*2;
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139 for (int j = 0; j < segments.length; j++) {
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140 ParagraphSegment segment = segments[j];
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141 segment.advanceLocator(gc, innerWidth, hloc, resourceTable, true);
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142 }
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143 hloc.collectHeights();
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144 loc.heights = heights;
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145 loc.rowCounter = 0;
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146 }
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147
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148 public void layout(GC gc, int width, Locator loc, int lineHeight,
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149 Hashtable resourceTable, IHyperlinkSegment selectedLink) {
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150 ParagraphSegment[] segments = getSegments();
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151 //int height;
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152 if (segments.length > 0) {
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153 /*
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154 if (segments[0] instanceof TextSegment
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155 && ((TextSegment) segments[0]).isSelectable())
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156 loc.x += 1;
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157 */
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158 // compute heights
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159 if (loc.heights is null)
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160 computeRowHeights(gc, width, loc, lineHeight, resourceTable);
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161 for (int j = 0; j < segments.length; j++) {
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162 ParagraphSegment segment = segments[j];
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163 bool doSelect = false;
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164 if (selectedLink !is null && segment.opEquals(cast(Object)selectedLink))
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165 doSelect = true;
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166 segment.layout(gc, width, loc, resourceTable, doSelect);
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167 }
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168 loc.heights = null;
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169 loc.y += loc.rowHeight;
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170 } else {
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171 loc.y += lineHeight;
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172 }
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173 }
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174
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175 public void paint(GC gc, Rectangle repaintRegion,
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176 Hashtable resourceTable, IHyperlinkSegment selectedLink,
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177 SelectionData selData) {
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178 ParagraphSegment[] segments = getSegments();
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179
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180 for (int i = 0; i < segments.length; i++) {
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181 ParagraphSegment segment = segments[i];
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182 if (!segment.intersects(repaintRegion))
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183 continue;
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184 bool doSelect = false;
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185 if (selectedLink !is null && segment.opEquals(cast(Object)selectedLink))
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186 doSelect = true;
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187 segment.paint(gc, false, resourceTable, doSelect, selData, repaintRegion);
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188 }
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189 }
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190
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191 public void computeSelection(GC gc, Hashtable resourceTable, IHyperlinkSegment selectedLink,
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192 SelectionData selData) {
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193 ParagraphSegment[] segments = getSegments();
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194
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195 for (int i = 0; i < segments.length; i++) {
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196 ParagraphSegment segment = segments[i];
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197 //bool doSelect = false;
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198 //if (selectedLink !is null && segment.equals(selectedLink))
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199 //doSelect = true;
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200 segment.computeSelection(gc, resourceTable, selData);
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201 }
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202 }
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203
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204 public String getAccessibleText() {
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205 ParagraphSegment[] segments = getSegments();
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206 auto txt = new tango.text.Text.Text!(char);
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207 for (int i = 0; i < segments.length; i++) {
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208 ParagraphSegment segment = segments[i];
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209 if ( auto ts = cast(TextSegment)segment ) {
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210 String text = ts.getText();
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211 txt.append(text);
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212 }
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213 }
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214 txt.append( FileConst.NewlineString );
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215 return txt.toString();
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216 }
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217
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218 public ParagraphSegment findSegmentAt(int x, int y) {
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219 if (segments !is null) {
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220 for (int i = 0; i < segments.size(); i++) {
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221 ParagraphSegment segment = cast(ParagraphSegment) segments.get(i);
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222 if (segment.contains(x, y))
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223 return segment;
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224 }
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225 }
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226 return null;
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227 }
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228 public void clearCache(String fontId) {
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229 if (segments !is null) {
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230 for (int i = 0; i < segments.size(); i++) {
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231 ParagraphSegment segment = cast(ParagraphSegment) segments.get(i);
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232 segment.clearCache(fontId);
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233 }
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234 }
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235 }
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236 }