Mercurial > projects > dwt-addons
annotate dwtx/jface/text/ListLineTracker.d @ 200:eb3414669eb0 default tip
fix for dmd 1.041 and tango 0.99.8
author | Frank Benoit <benoit@tionex.de> |
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date | Sat, 28 Mar 2009 03:09:57 +0100 |
parents | 1a5b8f8129df |
children |
rev | line source |
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129 | 1 /******************************************************************************* |
2 * Copyright (c) 2000, 2006 IBM Corporation and others. | |
3 * All rights reserved. This program and the accompanying materials | |
4 * are made available under the terms of the Eclipse Public License v1.0 | |
5 * which accompanies this distribution, and is available at | |
6 * http://www.eclipse.org/legal/epl-v10.html | |
7 * | |
8 * Contributors: | |
9 * IBM Corporation - initial API and implementation | |
10 * Port to the D programming language: | |
11 * Frank Benoit <benoit@tionex.de> | |
12 *******************************************************************************/ | |
13 module dwtx.jface.text.ListLineTracker; | |
14 | |
131 | 15 import dwtx.jface.text.IDocumentPartitioningListener; // packageimport |
16 import dwtx.jface.text.DefaultTextHover; // packageimport | |
17 import dwtx.jface.text.AbstractInformationControl; // packageimport | |
18 import dwtx.jface.text.TextUtilities; // packageimport | |
19 import dwtx.jface.text.IInformationControlCreatorExtension; // packageimport | |
20 import dwtx.jface.text.AbstractInformationControlManager; // packageimport | |
21 import dwtx.jface.text.ITextViewerExtension2; // packageimport | |
22 import dwtx.jface.text.IDocumentPartitioner; // packageimport | |
23 import dwtx.jface.text.DefaultIndentLineAutoEditStrategy; // packageimport | |
24 import dwtx.jface.text.ITextSelection; // packageimport | |
25 import dwtx.jface.text.Document; // packageimport | |
26 import dwtx.jface.text.FindReplaceDocumentAdapterContentProposalProvider; // packageimport | |
27 import dwtx.jface.text.ITextListener; // packageimport | |
28 import dwtx.jface.text.BadPartitioningException; // packageimport | |
29 import dwtx.jface.text.ITextViewerExtension5; // packageimport | |
30 import dwtx.jface.text.IDocumentPartitionerExtension3; // packageimport | |
31 import dwtx.jface.text.IUndoManager; // packageimport | |
32 import dwtx.jface.text.ITextHoverExtension2; // packageimport | |
33 import dwtx.jface.text.IRepairableDocument; // packageimport | |
34 import dwtx.jface.text.IRewriteTarget; // packageimport | |
35 import dwtx.jface.text.DefaultPositionUpdater; // packageimport | |
36 import dwtx.jface.text.RewriteSessionEditProcessor; // packageimport | |
37 import dwtx.jface.text.TextViewerHoverManager; // packageimport | |
38 import dwtx.jface.text.DocumentRewriteSession; // packageimport | |
39 import dwtx.jface.text.TextViewer; // packageimport | |
40 import dwtx.jface.text.ITextViewerExtension8; // packageimport | |
41 import dwtx.jface.text.RegExMessages; // packageimport | |
42 import dwtx.jface.text.IDelayedInputChangeProvider; // packageimport | |
43 import dwtx.jface.text.ITextOperationTargetExtension; // packageimport | |
44 import dwtx.jface.text.IWidgetTokenOwner; // packageimport | |
45 import dwtx.jface.text.IViewportListener; // packageimport | |
46 import dwtx.jface.text.GapTextStore; // packageimport | |
47 import dwtx.jface.text.MarkSelection; // packageimport | |
48 import dwtx.jface.text.IDocumentPartitioningListenerExtension; // packageimport | |
49 import dwtx.jface.text.IDocumentAdapterExtension; // packageimport | |
50 import dwtx.jface.text.IInformationControlExtension; // packageimport | |
51 import dwtx.jface.text.IDocumentPartitioningListenerExtension2; // packageimport | |
52 import dwtx.jface.text.DefaultDocumentAdapter; // packageimport | |
53 import dwtx.jface.text.ITextViewerExtension3; // packageimport | |
54 import dwtx.jface.text.IInformationControlCreator; // packageimport | |
55 import dwtx.jface.text.TypedRegion; // packageimport | |
56 import dwtx.jface.text.ISynchronizable; // packageimport | |
57 import dwtx.jface.text.IMarkRegionTarget; // packageimport | |
58 import dwtx.jface.text.TextViewerUndoManager; // packageimport | |
59 import dwtx.jface.text.IRegion; // packageimport | |
60 import dwtx.jface.text.IInformationControlExtension2; // packageimport | |
61 import dwtx.jface.text.IDocumentExtension4; // packageimport | |
62 import dwtx.jface.text.IDocumentExtension2; // packageimport | |
63 import dwtx.jface.text.IDocumentPartitionerExtension2; // packageimport | |
64 import dwtx.jface.text.Assert; // packageimport | |
65 import dwtx.jface.text.DefaultInformationControl; // packageimport | |
66 import dwtx.jface.text.IWidgetTokenOwnerExtension; // packageimport | |
67 import dwtx.jface.text.DocumentClone; // packageimport | |
68 import dwtx.jface.text.DefaultUndoManager; // packageimport | |
69 import dwtx.jface.text.IFindReplaceTarget; // packageimport | |
70 import dwtx.jface.text.IAutoEditStrategy; // packageimport | |
71 import dwtx.jface.text.ILineTrackerExtension; // packageimport | |
72 import dwtx.jface.text.IUndoManagerExtension; // packageimport | |
73 import dwtx.jface.text.TextSelection; // packageimport | |
74 import dwtx.jface.text.DefaultAutoIndentStrategy; // packageimport | |
75 import dwtx.jface.text.IAutoIndentStrategy; // packageimport | |
76 import dwtx.jface.text.IPainter; // packageimport | |
77 import dwtx.jface.text.IInformationControl; // packageimport | |
78 import dwtx.jface.text.IInformationControlExtension3; // packageimport | |
79 import dwtx.jface.text.ITextViewerExtension6; // packageimport | |
80 import dwtx.jface.text.IInformationControlExtension4; // packageimport | |
81 import dwtx.jface.text.DefaultLineTracker; // packageimport | |
82 import dwtx.jface.text.IDocumentInformationMappingExtension; // packageimport | |
83 import dwtx.jface.text.IRepairableDocumentExtension; // packageimport | |
84 import dwtx.jface.text.ITextHover; // packageimport | |
85 import dwtx.jface.text.FindReplaceDocumentAdapter; // packageimport | |
86 import dwtx.jface.text.ILineTracker; // packageimport | |
87 import dwtx.jface.text.Line; // packageimport | |
88 import dwtx.jface.text.ITextViewerExtension; // packageimport | |
89 import dwtx.jface.text.IDocumentAdapter; // packageimport | |
90 import dwtx.jface.text.TextEvent; // packageimport | |
91 import dwtx.jface.text.BadLocationException; // packageimport | |
92 import dwtx.jface.text.AbstractDocument; // packageimport | |
93 import dwtx.jface.text.AbstractLineTracker; // packageimport | |
94 import dwtx.jface.text.TreeLineTracker; // packageimport | |
95 import dwtx.jface.text.ITextPresentationListener; // packageimport | |
96 import dwtx.jface.text.Region; // packageimport | |
97 import dwtx.jface.text.ITextViewer; // packageimport | |
98 import dwtx.jface.text.IDocumentInformationMapping; // packageimport | |
99 import dwtx.jface.text.MarginPainter; // packageimport | |
100 import dwtx.jface.text.IPaintPositionManager; // packageimport | |
101 import dwtx.jface.text.TextPresentation; // packageimport | |
102 import dwtx.jface.text.IFindReplaceTargetExtension; // packageimport | |
103 import dwtx.jface.text.ISlaveDocumentManagerExtension; // packageimport | |
104 import dwtx.jface.text.ISelectionValidator; // packageimport | |
105 import dwtx.jface.text.IDocumentExtension; // packageimport | |
106 import dwtx.jface.text.PropagatingFontFieldEditor; // packageimport | |
107 import dwtx.jface.text.ConfigurableLineTracker; // packageimport | |
108 import dwtx.jface.text.SlaveDocumentEvent; // packageimport | |
109 import dwtx.jface.text.IDocumentListener; // packageimport | |
110 import dwtx.jface.text.PaintManager; // packageimport | |
111 import dwtx.jface.text.IFindReplaceTargetExtension3; // packageimport | |
112 import dwtx.jface.text.ITextDoubleClickStrategy; // packageimport | |
113 import dwtx.jface.text.IDocumentExtension3; // packageimport | |
114 import dwtx.jface.text.Position; // packageimport | |
115 import dwtx.jface.text.TextMessages; // packageimport | |
116 import dwtx.jface.text.CopyOnWriteTextStore; // packageimport | |
117 import dwtx.jface.text.WhitespaceCharacterPainter; // packageimport | |
118 import dwtx.jface.text.IPositionUpdater; // packageimport | |
119 import dwtx.jface.text.DefaultTextDoubleClickStrategy; // packageimport | |
120 import dwtx.jface.text.ITextInputListener; // packageimport | |
121 import dwtx.jface.text.BadPositionCategoryException; // packageimport | |
122 import dwtx.jface.text.IWidgetTokenKeeperExtension; // packageimport | |
123 import dwtx.jface.text.IInputChangedListener; // packageimport | |
124 import dwtx.jface.text.ITextOperationTarget; // packageimport | |
125 import dwtx.jface.text.IDocumentInformationMappingExtension2; // packageimport | |
126 import dwtx.jface.text.ITextViewerExtension7; // packageimport | |
127 import dwtx.jface.text.IInformationControlExtension5; // packageimport | |
128 import dwtx.jface.text.IDocumentRewriteSessionListener; // packageimport | |
129 import dwtx.jface.text.JFaceTextUtil; // packageimport | |
130 import dwtx.jface.text.AbstractReusableInformationControlCreator; // packageimport | |
131 import dwtx.jface.text.TabsToSpacesConverter; // packageimport | |
132 import dwtx.jface.text.CursorLinePainter; // packageimport | |
133 import dwtx.jface.text.ITextHoverExtension; // packageimport | |
134 import dwtx.jface.text.IEventConsumer; // packageimport | |
135 import dwtx.jface.text.IDocument; // packageimport | |
136 import dwtx.jface.text.IWidgetTokenKeeper; // packageimport | |
137 import dwtx.jface.text.DocumentCommand; // packageimport | |
138 import dwtx.jface.text.TypedPosition; // packageimport | |
139 import dwtx.jface.text.IEditingSupportRegistry; // packageimport | |
140 import dwtx.jface.text.IDocumentPartitionerExtension; // packageimport | |
141 import dwtx.jface.text.AbstractHoverInformationControlManager; // packageimport | |
142 import dwtx.jface.text.IEditingSupport; // packageimport | |
143 import dwtx.jface.text.IMarkSelection; // packageimport | |
144 import dwtx.jface.text.ISlaveDocumentManager; // packageimport | |
145 import dwtx.jface.text.DocumentEvent; // packageimport | |
146 import dwtx.jface.text.DocumentPartitioningChangedEvent; // packageimport | |
147 import dwtx.jface.text.ITextStore; // packageimport | |
148 import dwtx.jface.text.JFaceTextMessages; // packageimport | |
149 import dwtx.jface.text.DocumentRewriteSessionEvent; // packageimport | |
150 import dwtx.jface.text.SequentialRewriteTextStore; // packageimport | |
151 import dwtx.jface.text.DocumentRewriteSessionType; // packageimport | |
152 import dwtx.jface.text.TextAttribute; // packageimport | |
153 import dwtx.jface.text.ITextViewerExtension4; // packageimport | |
154 import dwtx.jface.text.ITypedRegion; // packageimport | |
155 | |
129 | 156 import dwt.dwthelper.utils; |
153
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157 import dwtx.dwtxhelper.Collection; |
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158 |
158 | 159 import dwtx.jface.text.AbstractLineTracker; |
129 | 160 |
161 /** | |
162 * Abstract, read-only implementation of <code>ILineTracker</code>. It lets the definition of | |
163 * line delimiters to subclasses. Assuming that '\n' is the only line delimiter, this abstract | |
164 * implementation defines the following line scheme: | |
165 * <ul> | |
166 * <li> "" -> [0,0] | |
167 * <li> "a" -> [0,1] | |
168 * <li> "\n" -> [0,1], [1,0] | |
169 * <li> "a\n" -> [0,2], [2,0] | |
170 * <li> "a\nb" -> [0,2], [2,1] | |
171 * <li> "a\nbc\n" -> [0,2], [2,3], [5,0] | |
172 * </ul> | |
173 * This class must be subclassed. | |
158 | 174 * |
129 | 175 * @since 3.2 |
176 */ | |
177 abstract class ListLineTracker : ILineTracker { | |
178 | |
179 /** The line information */ | |
162 | 180 private const List fLines; |
129 | 181 /** The length of the tracked text */ |
182 private int fTextLength; | |
183 | |
184 /** | |
185 * Creates a new line tracker. | |
186 */ | |
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187 protected this() { |
162 | 188 fLines= new ArrayList(); |
129 | 189 } |
190 | |
191 /** | |
192 * Binary search for the line at a given offset. | |
158 | 193 * |
129 | 194 * @param offset the offset whose line should be found |
195 * @return the line of the offset | |
196 */ | |
197 private int findLine(int offset) { | |
198 | |
199 if (fLines.size() is 0) | |
200 return -1; | |
201 | |
202 int left= 0; | |
203 int right= fLines.size() - 1; | |
204 int mid= 0; | |
205 Line line= null; | |
206 | |
207 while (left < right) { | |
208 | |
209 mid= (left + right) / 2; | |
210 | |
134 | 211 line= cast(Line) fLines.get(mid); |
129 | 212 if (offset < line.offset) { |
213 if (left is mid) | |
214 right= left; | |
215 else | |
216 right= mid - 1; | |
217 } else if (offset > line.offset) { | |
218 if (right is mid) | |
219 left= right; | |
220 else | |
221 left= mid + 1; | |
222 } else if (offset is line.offset) { | |
223 left= right= mid; | |
224 } | |
225 } | |
226 | |
134 | 227 line= cast(Line) fLines.get(left); |
129 | 228 if (line.offset > offset) |
229 --left; | |
230 return left; | |
231 } | |
232 | |
233 /** | |
234 * Returns the number of lines covered by the specified text range. | |
158 | 235 * |
129 | 236 * @param startLine the line where the text range starts |
237 * @param offset the start offset of the text range | |
238 * @param length the length of the text range | |
239 * @return the number of lines covered by this text range | |
240 * @exception BadLocationException if range is undefined in this tracker | |
241 */ | |
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242 private int getNumberOfLines(int startLine, int offset, int length) { |
129 | 243 |
244 if (length is 0) | |
245 return 1; | |
246 | |
247 int target= offset + length; | |
248 | |
134 | 249 Line l= cast(Line) fLines.get(startLine); |
129 | 250 |
251 if (l.delimiter is null) | |
252 return 1; | |
253 | |
254 if (l.offset + l.length > target) | |
255 return 1; | |
256 | |
257 if (l.offset + l.length is target) | |
258 return 2; | |
259 | |
260 return getLineNumberOfOffset(target) - startLine + 1; | |
261 } | |
262 | |
263 /* | |
264 * @see dwtx.jface.text.ILineTracker#getLineLength(int) | |
265 */ | |
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266 public final int getLineLength(int line) { |
129 | 267 int lines= fLines.size(); |
268 | |
269 if (line < 0 || line > lines) | |
270 throw new BadLocationException(); | |
271 | |
272 if (lines is 0 || lines is line) | |
273 return 0; | |
274 | |
134 | 275 Line l= cast(Line) fLines.get(line); |
129 | 276 return l.length; |
277 } | |
278 | |
279 /* | |
280 * @see dwtx.jface.text.ILineTracker#getLineNumberOfOffset(int) | |
281 */ | |
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282 public final int getLineNumberOfOffset(int position) { |
129 | 283 if (position < 0 || position > fTextLength) |
284 throw new BadLocationException(); | |
285 | |
286 if (position is fTextLength) { | |
287 | |
288 int lastLine= fLines.size() - 1; | |
289 if (lastLine < 0) | |
290 return 0; | |
291 | |
134 | 292 Line l= cast(Line) fLines.get(lastLine); |
129 | 293 return (l.delimiter !is null ? lastLine + 1 : lastLine); |
294 } | |
295 | |
296 return findLine(position); | |
297 } | |
298 | |
299 /* | |
300 * @see dwtx.jface.text.ILineTracker#getLineInformationOfOffset(int) | |
301 */ | |
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302 public final IRegion getLineInformationOfOffset(int position) { |
129 | 303 if (position > fTextLength) |
304 throw new BadLocationException(); | |
305 | |
306 if (position is fTextLength) { | |
307 int size= fLines.size(); | |
308 if (size is 0) | |
309 return new Region(0, 0); | |
134 | 310 Line l= cast(Line) fLines.get(size - 1); |
129 | 311 return (l.delimiter !is null ? new Line(fTextLength, 0) : new Line(fTextLength - l.length, l.length)); |
312 } | |
313 | |
314 return getLineInformation(findLine(position)); | |
315 } | |
316 | |
317 /* | |
318 * @see dwtx.jface.text.ILineTracker#getLineInformation(int) | |
319 */ | |
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320 public final IRegion getLineInformation(int line) { |
129 | 321 int lines= fLines.size(); |
322 | |
323 if (line < 0 || line > lines) | |
324 throw new BadLocationException(); | |
325 | |
326 if (lines is 0) | |
327 return new Line(0, 0); | |
328 | |
329 if (line is lines) { | |
134 | 330 Line l= cast(Line) fLines.get(line - 1); |
129 | 331 return new Line(l.offset + l.length, 0); |
332 } | |
333 | |
134 | 334 Line l= cast(Line) fLines.get(line); |
129 | 335 return (l.delimiter !is null ? new Line(l.offset, l.length - l.delimiter.length()) : l); |
336 } | |
337 | |
338 /* | |
339 * @see dwtx.jface.text.ILineTracker#getLineOffset(int) | |
340 */ | |
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341 public final int getLineOffset(int line) { |
129 | 342 int lines= fLines.size(); |
343 | |
344 if (line < 0 || line > lines) | |
345 throw new BadLocationException(); | |
346 | |
347 if (lines is 0) | |
348 return 0; | |
349 | |
350 if (line is lines) { | |
134 | 351 Line l= cast(Line) fLines.get(line - 1); |
129 | 352 if (l.delimiter !is null) |
353 return l.offset + l.length; | |
354 throw new BadLocationException(); | |
355 } | |
356 | |
134 | 357 Line l= cast(Line) fLines.get(line); |
129 | 358 return l.offset; |
359 } | |
360 | |
361 /* | |
362 * @see dwtx.jface.text.ILineTracker#getNumberOfLines() | |
363 */ | |
364 public final int getNumberOfLines() { | |
365 int lines= fLines.size(); | |
366 | |
367 if (lines is 0) | |
368 return 1; | |
369 | |
134 | 370 Line l= cast(Line) fLines.get(lines - 1); |
129 | 371 return (l.delimiter !is null ? lines + 1 : lines); |
372 } | |
373 | |
374 /* | |
375 * @see dwtx.jface.text.ILineTracker#getNumberOfLines(int, int) | |
376 */ | |
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377 public final int getNumberOfLines(int position, int length) { |
129 | 378 |
379 if (position < 0 || position + length > fTextLength) | |
380 throw new BadLocationException(); | |
381 | |
382 if (length is 0) // optimization | |
383 return 1; | |
384 | |
385 return getNumberOfLines(getLineNumberOfOffset(position), position, length); | |
386 } | |
387 | |
388 /* | |
389 * @see dwtx.jface.text.ILineTracker#computeNumberOfLines(java.lang.String) | |
390 */ | |
391 public final int computeNumberOfLines(String text) { | |
392 int count= 0; | |
393 int start= 0; | |
159 | 394 AbstractLineTracker_DelimiterInfo delimiterInfo= nextDelimiterInfo(text, start); |
129 | 395 while (delimiterInfo !is null && delimiterInfo.delimiterIndex > -1) { |
396 ++count; | |
397 start= delimiterInfo.delimiterIndex + delimiterInfo.delimiterLength; | |
398 delimiterInfo= nextDelimiterInfo(text, start); | |
399 } | |
400 return count; | |
401 } | |
402 | |
403 /* | |
404 * @see dwtx.jface.text.ILineTracker#getLineDelimiter(int) | |
405 */ | |
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406 public final String getLineDelimiter(int line) { |
129 | 407 int lines= fLines.size(); |
408 | |
409 if (line < 0 || line > lines) | |
410 throw new BadLocationException(); | |
411 | |
412 if (lines is 0) | |
413 return null; | |
414 | |
415 if (line is lines) | |
416 return null; | |
417 | |
134 | 418 Line l= cast(Line) fLines.get(line); |
129 | 419 return l.delimiter; |
420 } | |
421 | |
422 /** | |
423 * Returns the information about the first delimiter found in the given text starting at the | |
424 * given offset. | |
158 | 425 * |
129 | 426 * @param text the text to be searched |
427 * @param offset the offset in the given text | |
428 * @return the information of the first found delimiter or <code>null</code> | |
429 */ | |
159 | 430 protected abstract AbstractLineTracker_DelimiterInfo nextDelimiterInfo(String text, int offset); |
129 | 431 |
432 /** | |
433 * Creates the line structure for the given text. Newly created lines are inserted into the line | |
434 * structure starting at the given position. Returns the number of newly created lines. | |
158 | 435 * |
129 | 436 * @param text the text for which to create a line structure |
437 * @param insertPosition the position at which the newly created lines are inserted into the | |
438 * tracker's line structure | |
439 * @param offset the offset of all newly created lines | |
440 * @return the number of newly created lines | |
441 */ | |
442 private int createLines(String text, int insertPosition, int offset) { | |
443 | |
444 int count= 0; | |
445 int start= 0; | |
159 | 446 AbstractLineTracker_DelimiterInfo delimiterInfo= nextDelimiterInfo(text, 0); |
129 | 447 |
448 while (delimiterInfo !is null && delimiterInfo.delimiterIndex > -1) { | |
449 | |
450 int index= delimiterInfo.delimiterIndex + (delimiterInfo.delimiterLength - 1); | |
451 | |
452 if (insertPosition + count >= fLines.size()) | |
453 fLines.add(new Line(offset + start, offset + index, delimiterInfo.delimiter)); | |
454 else | |
455 fLines.add(insertPosition + count, new Line(offset + start, offset + index, delimiterInfo.delimiter)); | |
456 | |
457 ++count; | |
458 start= index + 1; | |
459 delimiterInfo= nextDelimiterInfo(text, start); | |
460 } | |
461 | |
462 if (start < text.length()) { | |
463 if (insertPosition + count < fLines.size()) { | |
464 // there is a line below the current | |
134 | 465 Line l= cast(Line) fLines.get(insertPosition + count); |
129 | 466 int delta= text.length() - start; |
467 l.offset-= delta; | |
468 l.length+= delta; | |
469 } else { | |
470 fLines.add(new Line(offset + start, offset + text.length() - 1, null)); | |
471 ++count; | |
472 } | |
473 } | |
474 | |
475 return count; | |
476 } | |
477 | |
478 /* | |
479 * @see dwtx.jface.text.ILineTracker#replace(int, int, java.lang.String) | |
480 */ | |
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481 public final void replace(int position, int length, String text) { |
129 | 482 throw new UnsupportedOperationException(); |
483 } | |
484 | |
485 /* | |
486 * @see dwtx.jface.text.ILineTracker#set(java.lang.String) | |
487 */ | |
488 public final void set(String text) { | |
489 fLines.clear(); | |
490 if (text !is null) { | |
491 fTextLength= text.length(); | |
492 createLines(text, 0, 0); | |
493 } | |
494 } | |
495 | |
496 /** | |
497 * Returns the internal data structure, a {@link List} of {@link Line}s. Used only by | |
498 * {@link TreeLineTracker#TreeLineTracker(ListLineTracker)}. | |
158 | 499 * |
129 | 500 * @return the internal list of lines. |
501 */ | |
502 final List getLines() { | |
503 return fLines; | |
504 } | |
505 } |