Mercurial > projects > dwt-addons
annotate dwtx/jface/text/ListLineTracker.d @ 159:7926b636c282
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author | Frank Benoit <benoit@tionex.de> |
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date | Wed, 27 Aug 2008 01:57:58 +0200 |
parents | 25f1f92fa3df |
children | 1a5b8f8129df |
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 */ | |
146 | 180 private const List fLines= new ArrayList(); |
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() { |
129 | 188 } |
189 | |
190 /** | |
191 * Binary search for the line at a given offset. | |
158 | 192 * |
129 | 193 * @param offset the offset whose line should be found |
194 * @return the line of the offset | |
195 */ | |
196 private int findLine(int offset) { | |
197 | |
198 if (fLines.size() is 0) | |
199 return -1; | |
200 | |
201 int left= 0; | |
202 int right= fLines.size() - 1; | |
203 int mid= 0; | |
204 Line line= null; | |
205 | |
206 while (left < right) { | |
207 | |
208 mid= (left + right) / 2; | |
209 | |
134 | 210 line= cast(Line) fLines.get(mid); |
129 | 211 if (offset < line.offset) { |
212 if (left is mid) | |
213 right= left; | |
214 else | |
215 right= mid - 1; | |
216 } else if (offset > line.offset) { | |
217 if (right is mid) | |
218 left= right; | |
219 else | |
220 left= mid + 1; | |
221 } else if (offset is line.offset) { | |
222 left= right= mid; | |
223 } | |
224 } | |
225 | |
134 | 226 line= cast(Line) fLines.get(left); |
129 | 227 if (line.offset > offset) |
228 --left; | |
229 return left; | |
230 } | |
231 | |
232 /** | |
233 * Returns the number of lines covered by the specified text range. | |
158 | 234 * |
129 | 235 * @param startLine the line where the text range starts |
236 * @param offset the start offset of the text range | |
237 * @param length the length of the text range | |
238 * @return the number of lines covered by this text range | |
239 * @exception BadLocationException if range is undefined in this tracker | |
240 */ | |
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241 private int getNumberOfLines(int startLine, int offset, int length) { |
129 | 242 |
243 if (length is 0) | |
244 return 1; | |
245 | |
246 int target= offset + length; | |
247 | |
134 | 248 Line l= cast(Line) fLines.get(startLine); |
129 | 249 |
250 if (l.delimiter is null) | |
251 return 1; | |
252 | |
253 if (l.offset + l.length > target) | |
254 return 1; | |
255 | |
256 if (l.offset + l.length is target) | |
257 return 2; | |
258 | |
259 return getLineNumberOfOffset(target) - startLine + 1; | |
260 } | |
261 | |
262 /* | |
263 * @see dwtx.jface.text.ILineTracker#getLineLength(int) | |
264 */ | |
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265 public final int getLineLength(int line) { |
129 | 266 int lines= fLines.size(); |
267 | |
268 if (line < 0 || line > lines) | |
269 throw new BadLocationException(); | |
270 | |
271 if (lines is 0 || lines is line) | |
272 return 0; | |
273 | |
134 | 274 Line l= cast(Line) fLines.get(line); |
129 | 275 return l.length; |
276 } | |
277 | |
278 /* | |
279 * @see dwtx.jface.text.ILineTracker#getLineNumberOfOffset(int) | |
280 */ | |
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281 public final int getLineNumberOfOffset(int position) { |
129 | 282 if (position < 0 || position > fTextLength) |
283 throw new BadLocationException(); | |
284 | |
285 if (position is fTextLength) { | |
286 | |
287 int lastLine= fLines.size() - 1; | |
288 if (lastLine < 0) | |
289 return 0; | |
290 | |
134 | 291 Line l= cast(Line) fLines.get(lastLine); |
129 | 292 return (l.delimiter !is null ? lastLine + 1 : lastLine); |
293 } | |
294 | |
295 return findLine(position); | |
296 } | |
297 | |
298 /* | |
299 * @see dwtx.jface.text.ILineTracker#getLineInformationOfOffset(int) | |
300 */ | |
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301 public final IRegion getLineInformationOfOffset(int position) { |
129 | 302 if (position > fTextLength) |
303 throw new BadLocationException(); | |
304 | |
305 if (position is fTextLength) { | |
306 int size= fLines.size(); | |
307 if (size is 0) | |
308 return new Region(0, 0); | |
134 | 309 Line l= cast(Line) fLines.get(size - 1); |
129 | 310 return (l.delimiter !is null ? new Line(fTextLength, 0) : new Line(fTextLength - l.length, l.length)); |
311 } | |
312 | |
313 return getLineInformation(findLine(position)); | |
314 } | |
315 | |
316 /* | |
317 * @see dwtx.jface.text.ILineTracker#getLineInformation(int) | |
318 */ | |
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319 public final IRegion getLineInformation(int line) { |
129 | 320 int lines= fLines.size(); |
321 | |
322 if (line < 0 || line > lines) | |
323 throw new BadLocationException(); | |
324 | |
325 if (lines is 0) | |
326 return new Line(0, 0); | |
327 | |
328 if (line is lines) { | |
134 | 329 Line l= cast(Line) fLines.get(line - 1); |
129 | 330 return new Line(l.offset + l.length, 0); |
331 } | |
332 | |
134 | 333 Line l= cast(Line) fLines.get(line); |
129 | 334 return (l.delimiter !is null ? new Line(l.offset, l.length - l.delimiter.length()) : l); |
335 } | |
336 | |
337 /* | |
338 * @see dwtx.jface.text.ILineTracker#getLineOffset(int) | |
339 */ | |
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340 public final int getLineOffset(int line) { |
129 | 341 int lines= fLines.size(); |
342 | |
343 if (line < 0 || line > lines) | |
344 throw new BadLocationException(); | |
345 | |
346 if (lines is 0) | |
347 return 0; | |
348 | |
349 if (line is lines) { | |
134 | 350 Line l= cast(Line) fLines.get(line - 1); |
129 | 351 if (l.delimiter !is null) |
352 return l.offset + l.length; | |
353 throw new BadLocationException(); | |
354 } | |
355 | |
134 | 356 Line l= cast(Line) fLines.get(line); |
129 | 357 return l.offset; |
358 } | |
359 | |
360 /* | |
361 * @see dwtx.jface.text.ILineTracker#getNumberOfLines() | |
362 */ | |
363 public final int getNumberOfLines() { | |
364 int lines= fLines.size(); | |
365 | |
366 if (lines is 0) | |
367 return 1; | |
368 | |
134 | 369 Line l= cast(Line) fLines.get(lines - 1); |
129 | 370 return (l.delimiter !is null ? lines + 1 : lines); |
371 } | |
372 | |
373 /* | |
374 * @see dwtx.jface.text.ILineTracker#getNumberOfLines(int, int) | |
375 */ | |
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376 public final int getNumberOfLines(int position, int length) { |
129 | 377 |
378 if (position < 0 || position + length > fTextLength) | |
379 throw new BadLocationException(); | |
380 | |
381 if (length is 0) // optimization | |
382 return 1; | |
383 | |
384 return getNumberOfLines(getLineNumberOfOffset(position), position, length); | |
385 } | |
386 | |
387 /* | |
388 * @see dwtx.jface.text.ILineTracker#computeNumberOfLines(java.lang.String) | |
389 */ | |
390 public final int computeNumberOfLines(String text) { | |
391 int count= 0; | |
392 int start= 0; | |
159 | 393 AbstractLineTracker_DelimiterInfo delimiterInfo= nextDelimiterInfo(text, start); |
129 | 394 while (delimiterInfo !is null && delimiterInfo.delimiterIndex > -1) { |
395 ++count; | |
396 start= delimiterInfo.delimiterIndex + delimiterInfo.delimiterLength; | |
397 delimiterInfo= nextDelimiterInfo(text, start); | |
398 } | |
399 return count; | |
400 } | |
401 | |
402 /* | |
403 * @see dwtx.jface.text.ILineTracker#getLineDelimiter(int) | |
404 */ | |
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405 public final String getLineDelimiter(int line) { |
129 | 406 int lines= fLines.size(); |
407 | |
408 if (line < 0 || line > lines) | |
409 throw new BadLocationException(); | |
410 | |
411 if (lines is 0) | |
412 return null; | |
413 | |
414 if (line is lines) | |
415 return null; | |
416 | |
134 | 417 Line l= cast(Line) fLines.get(line); |
129 | 418 return l.delimiter; |
419 } | |
420 | |
421 /** | |
422 * Returns the information about the first delimiter found in the given text starting at the | |
423 * given offset. | |
158 | 424 * |
129 | 425 * @param text the text to be searched |
426 * @param offset the offset in the given text | |
427 * @return the information of the first found delimiter or <code>null</code> | |
428 */ | |
159 | 429 protected abstract AbstractLineTracker_DelimiterInfo nextDelimiterInfo(String text, int offset); |
129 | 430 |
431 /** | |
432 * Creates the line structure for the given text. Newly created lines are inserted into the line | |
433 * structure starting at the given position. Returns the number of newly created lines. | |
158 | 434 * |
129 | 435 * @param text the text for which to create a line structure |
436 * @param insertPosition the position at which the newly created lines are inserted into the | |
437 * tracker's line structure | |
438 * @param offset the offset of all newly created lines | |
439 * @return the number of newly created lines | |
440 */ | |
441 private int createLines(String text, int insertPosition, int offset) { | |
442 | |
443 int count= 0; | |
444 int start= 0; | |
159 | 445 AbstractLineTracker_DelimiterInfo delimiterInfo= nextDelimiterInfo(text, 0); |
129 | 446 |
447 while (delimiterInfo !is null && delimiterInfo.delimiterIndex > -1) { | |
448 | |
449 int index= delimiterInfo.delimiterIndex + (delimiterInfo.delimiterLength - 1); | |
450 | |
451 if (insertPosition + count >= fLines.size()) | |
452 fLines.add(new Line(offset + start, offset + index, delimiterInfo.delimiter)); | |
453 else | |
454 fLines.add(insertPosition + count, new Line(offset + start, offset + index, delimiterInfo.delimiter)); | |
455 | |
456 ++count; | |
457 start= index + 1; | |
458 delimiterInfo= nextDelimiterInfo(text, start); | |
459 } | |
460 | |
461 if (start < text.length()) { | |
462 if (insertPosition + count < fLines.size()) { | |
463 // there is a line below the current | |
134 | 464 Line l= cast(Line) fLines.get(insertPosition + count); |
129 | 465 int delta= text.length() - start; |
466 l.offset-= delta; | |
467 l.length+= delta; | |
468 } else { | |
469 fLines.add(new Line(offset + start, offset + text.length() - 1, null)); | |
470 ++count; | |
471 } | |
472 } | |
473 | |
474 return count; | |
475 } | |
476 | |
477 /* | |
478 * @see dwtx.jface.text.ILineTracker#replace(int, int, java.lang.String) | |
479 */ | |
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480 public final void replace(int position, int length, String text) { |
129 | 481 throw new UnsupportedOperationException(); |
482 } | |
483 | |
484 /* | |
485 * @see dwtx.jface.text.ILineTracker#set(java.lang.String) | |
486 */ | |
487 public final void set(String text) { | |
488 fLines.clear(); | |
489 if (text !is null) { | |
490 fTextLength= text.length(); | |
491 createLines(text, 0, 0); | |
492 } | |
493 } | |
494 | |
495 /** | |
496 * Returns the internal data structure, a {@link List} of {@link Line}s. Used only by | |
497 * {@link TreeLineTracker#TreeLineTracker(ListLineTracker)}. | |
158 | 498 * |
129 | 499 * @return the internal list of lines. |
500 */ | |
501 final List getLines() { | |
502 return fLines; | |
503 } | |
504 } |