Mercurial > projects > dwt-addons
annotate dwtx/jface/text/TextViewerUndoManager.d @ 151:eb21d3dfc767
fix module statement
author | Frank Benoit <benoit@tionex.de> |
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date | Sun, 24 Aug 2008 23:55:45 +0200 |
parents | b6bad70d540a |
children | a9566845f1cb |
rev | line source |
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129 | 1 /******************************************************************************* |
2 * Copyright (c) 2006, 2008 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 | |
131 | 14 |
151 | 15 module dwtx.jface.text.TextViewerUndoManager; |
16 | |
131 | 17 import dwtx.jface.text.IDocumentPartitioningListener; // packageimport |
18 import dwtx.jface.text.DefaultTextHover; // packageimport | |
19 import dwtx.jface.text.AbstractInformationControl; // packageimport | |
20 import dwtx.jface.text.TextUtilities; // packageimport | |
21 import dwtx.jface.text.IInformationControlCreatorExtension; // packageimport | |
22 import dwtx.jface.text.AbstractInformationControlManager; // packageimport | |
23 import dwtx.jface.text.ITextViewerExtension2; // packageimport | |
24 import dwtx.jface.text.IDocumentPartitioner; // packageimport | |
25 import dwtx.jface.text.DefaultIndentLineAutoEditStrategy; // packageimport | |
26 import dwtx.jface.text.ITextSelection; // packageimport | |
27 import dwtx.jface.text.Document; // packageimport | |
28 import dwtx.jface.text.FindReplaceDocumentAdapterContentProposalProvider; // packageimport | |
29 import dwtx.jface.text.ITextListener; // packageimport | |
30 import dwtx.jface.text.BadPartitioningException; // packageimport | |
31 import dwtx.jface.text.ITextViewerExtension5; // packageimport | |
32 import dwtx.jface.text.IDocumentPartitionerExtension3; // packageimport | |
33 import dwtx.jface.text.IUndoManager; // packageimport | |
34 import dwtx.jface.text.ITextHoverExtension2; // packageimport | |
35 import dwtx.jface.text.IRepairableDocument; // packageimport | |
36 import dwtx.jface.text.IRewriteTarget; // packageimport | |
37 import dwtx.jface.text.DefaultPositionUpdater; // packageimport | |
38 import dwtx.jface.text.RewriteSessionEditProcessor; // packageimport | |
39 import dwtx.jface.text.TextViewerHoverManager; // packageimport | |
40 import dwtx.jface.text.DocumentRewriteSession; // packageimport | |
41 import dwtx.jface.text.TextViewer; // packageimport | |
42 import dwtx.jface.text.ITextViewerExtension8; // packageimport | |
43 import dwtx.jface.text.RegExMessages; // packageimport | |
44 import dwtx.jface.text.IDelayedInputChangeProvider; // packageimport | |
45 import dwtx.jface.text.ITextOperationTargetExtension; // packageimport | |
46 import dwtx.jface.text.IWidgetTokenOwner; // packageimport | |
47 import dwtx.jface.text.IViewportListener; // packageimport | |
48 import dwtx.jface.text.GapTextStore; // packageimport | |
49 import dwtx.jface.text.MarkSelection; // packageimport | |
50 import dwtx.jface.text.IDocumentPartitioningListenerExtension; // packageimport | |
51 import dwtx.jface.text.IDocumentAdapterExtension; // packageimport | |
52 import dwtx.jface.text.IInformationControlExtension; // packageimport | |
53 import dwtx.jface.text.IDocumentPartitioningListenerExtension2; // packageimport | |
54 import dwtx.jface.text.DefaultDocumentAdapter; // packageimport | |
55 import dwtx.jface.text.ITextViewerExtension3; // packageimport | |
56 import dwtx.jface.text.IInformationControlCreator; // packageimport | |
57 import dwtx.jface.text.TypedRegion; // packageimport | |
58 import dwtx.jface.text.ISynchronizable; // packageimport | |
59 import dwtx.jface.text.IMarkRegionTarget; // packageimport | |
60 import dwtx.jface.text.IRegion; // packageimport | |
61 import dwtx.jface.text.IInformationControlExtension2; // packageimport | |
62 import dwtx.jface.text.IDocumentExtension4; // packageimport | |
63 import dwtx.jface.text.IDocumentExtension2; // packageimport | |
64 import dwtx.jface.text.IDocumentPartitionerExtension2; // packageimport | |
65 import dwtx.jface.text.Assert; // packageimport | |
66 import dwtx.jface.text.DefaultInformationControl; // packageimport | |
67 import dwtx.jface.text.IWidgetTokenOwnerExtension; // packageimport | |
68 import dwtx.jface.text.DocumentClone; // packageimport | |
69 import dwtx.jface.text.DefaultUndoManager; // packageimport | |
70 import dwtx.jface.text.IFindReplaceTarget; // packageimport | |
71 import dwtx.jface.text.IAutoEditStrategy; // packageimport | |
72 import dwtx.jface.text.ILineTrackerExtension; // packageimport | |
73 import dwtx.jface.text.IUndoManagerExtension; // packageimport | |
74 import dwtx.jface.text.TextSelection; // packageimport | |
75 import dwtx.jface.text.DefaultAutoIndentStrategy; // packageimport | |
76 import dwtx.jface.text.IAutoIndentStrategy; // packageimport | |
77 import dwtx.jface.text.IPainter; // packageimport | |
78 import dwtx.jface.text.IInformationControl; // packageimport | |
79 import dwtx.jface.text.IInformationControlExtension3; // packageimport | |
80 import dwtx.jface.text.ITextViewerExtension6; // packageimport | |
81 import dwtx.jface.text.IInformationControlExtension4; // packageimport | |
82 import dwtx.jface.text.DefaultLineTracker; // packageimport | |
83 import dwtx.jface.text.IDocumentInformationMappingExtension; // packageimport | |
84 import dwtx.jface.text.IRepairableDocumentExtension; // packageimport | |
85 import dwtx.jface.text.ITextHover; // packageimport | |
86 import dwtx.jface.text.FindReplaceDocumentAdapter; // packageimport | |
87 import dwtx.jface.text.ILineTracker; // packageimport | |
88 import dwtx.jface.text.Line; // packageimport | |
89 import dwtx.jface.text.ITextViewerExtension; // packageimport | |
90 import dwtx.jface.text.IDocumentAdapter; // packageimport | |
91 import dwtx.jface.text.TextEvent; // packageimport | |
92 import dwtx.jface.text.BadLocationException; // packageimport | |
93 import dwtx.jface.text.AbstractDocument; // packageimport | |
94 import dwtx.jface.text.AbstractLineTracker; // packageimport | |
95 import dwtx.jface.text.TreeLineTracker; // packageimport | |
96 import dwtx.jface.text.ITextPresentationListener; // packageimport | |
97 import dwtx.jface.text.Region; // packageimport | |
98 import dwtx.jface.text.ITextViewer; // packageimport | |
99 import dwtx.jface.text.IDocumentInformationMapping; // packageimport | |
100 import dwtx.jface.text.MarginPainter; // packageimport | |
101 import dwtx.jface.text.IPaintPositionManager; // packageimport | |
102 import dwtx.jface.text.TextPresentation; // packageimport | |
103 import dwtx.jface.text.IFindReplaceTargetExtension; // packageimport | |
104 import dwtx.jface.text.ISlaveDocumentManagerExtension; // packageimport | |
105 import dwtx.jface.text.ISelectionValidator; // packageimport | |
106 import dwtx.jface.text.IDocumentExtension; // packageimport | |
107 import dwtx.jface.text.PropagatingFontFieldEditor; // packageimport | |
108 import dwtx.jface.text.ConfigurableLineTracker; // packageimport | |
109 import dwtx.jface.text.SlaveDocumentEvent; // packageimport | |
110 import dwtx.jface.text.IDocumentListener; // packageimport | |
111 import dwtx.jface.text.PaintManager; // packageimport | |
112 import dwtx.jface.text.IFindReplaceTargetExtension3; // packageimport | |
113 import dwtx.jface.text.ITextDoubleClickStrategy; // packageimport | |
114 import dwtx.jface.text.IDocumentExtension3; // packageimport | |
115 import dwtx.jface.text.Position; // packageimport | |
116 import dwtx.jface.text.TextMessages; // packageimport | |
117 import dwtx.jface.text.CopyOnWriteTextStore; // packageimport | |
118 import dwtx.jface.text.WhitespaceCharacterPainter; // packageimport | |
119 import dwtx.jface.text.IPositionUpdater; // packageimport | |
120 import dwtx.jface.text.DefaultTextDoubleClickStrategy; // packageimport | |
121 import dwtx.jface.text.ListLineTracker; // packageimport | |
122 import dwtx.jface.text.ITextInputListener; // packageimport | |
123 import dwtx.jface.text.BadPositionCategoryException; // packageimport | |
124 import dwtx.jface.text.IWidgetTokenKeeperExtension; // packageimport | |
125 import dwtx.jface.text.IInputChangedListener; // packageimport | |
126 import dwtx.jface.text.ITextOperationTarget; // packageimport | |
127 import dwtx.jface.text.IDocumentInformationMappingExtension2; // packageimport | |
128 import dwtx.jface.text.ITextViewerExtension7; // packageimport | |
129 import dwtx.jface.text.IInformationControlExtension5; // packageimport | |
130 import dwtx.jface.text.IDocumentRewriteSessionListener; // packageimport | |
131 import dwtx.jface.text.JFaceTextUtil; // packageimport | |
132 import dwtx.jface.text.AbstractReusableInformationControlCreator; // packageimport | |
133 import dwtx.jface.text.TabsToSpacesConverter; // packageimport | |
134 import dwtx.jface.text.CursorLinePainter; // packageimport | |
135 import dwtx.jface.text.ITextHoverExtension; // packageimport | |
136 import dwtx.jface.text.IEventConsumer; // packageimport | |
137 import dwtx.jface.text.IDocument; // packageimport | |
138 import dwtx.jface.text.IWidgetTokenKeeper; // packageimport | |
139 import dwtx.jface.text.DocumentCommand; // packageimport | |
140 import dwtx.jface.text.TypedPosition; // packageimport | |
141 import dwtx.jface.text.IEditingSupportRegistry; // packageimport | |
142 import dwtx.jface.text.IDocumentPartitionerExtension; // packageimport | |
143 import dwtx.jface.text.AbstractHoverInformationControlManager; // packageimport | |
144 import dwtx.jface.text.IEditingSupport; // packageimport | |
145 import dwtx.jface.text.IMarkSelection; // packageimport | |
146 import dwtx.jface.text.ISlaveDocumentManager; // packageimport | |
147 import dwtx.jface.text.DocumentEvent; // packageimport | |
148 import dwtx.jface.text.DocumentPartitioningChangedEvent; // packageimport | |
149 import dwtx.jface.text.ITextStore; // packageimport | |
150 import dwtx.jface.text.JFaceTextMessages; // packageimport | |
151 import dwtx.jface.text.DocumentRewriteSessionEvent; // packageimport | |
152 import dwtx.jface.text.SequentialRewriteTextStore; // packageimport | |
153 import dwtx.jface.text.DocumentRewriteSessionType; // packageimport | |
154 import dwtx.jface.text.TextAttribute; // packageimport | |
155 import dwtx.jface.text.ITextViewerExtension4; // packageimport | |
156 import dwtx.jface.text.ITypedRegion; // packageimport | |
157 | |
129 | 158 import dwt.dwthelper.utils; |
159 | |
160 | |
161 | |
162 | |
163 | |
164 import dwt.DWT; | |
165 import dwt.custom.StyledText; | |
166 import dwt.events.KeyEvent; | |
167 import dwt.events.KeyListener; | |
168 import dwt.events.MouseEvent; | |
169 import dwt.events.MouseListener; | |
170 import dwt.widgets.Display; | |
171 import dwt.widgets.Shell; | |
172 import dwtx.core.commands.ExecutionException; | |
173 import dwtx.core.commands.operations.IUndoContext; | |
174 import dwtx.jface.dialogs.MessageDialog; | |
175 import dwtx.text.undo.DocumentUndoEvent; | |
176 import dwtx.text.undo.DocumentUndoManager; | |
177 import dwtx.text.undo.DocumentUndoManagerRegistry; | |
178 import dwtx.text.undo.IDocumentUndoListener; | |
179 import dwtx.text.undo.IDocumentUndoManager; | |
180 | |
181 | |
182 /** | |
183 * Implementation of {@link dwtx.jface.text.IUndoManager} using the shared | |
184 * document undo manager. | |
185 * <p> | |
186 * It registers with the connected text viewer as text input listener, and obtains | |
187 * its undo manager from the current document. It also monitors mouse and keyboard | |
188 * activities in order to partition the stream of text changes into undo-able | |
189 * edit commands. | |
190 * <p> | |
191 * This class is not intended to be subclassed. | |
192 * </p> | |
193 * | |
194 * @see ITextViewer | |
195 * @see ITextInputListener | |
196 * @see IDocumentUndoManager | |
197 * @see MouseListener | |
198 * @see KeyListener | |
199 * @see DocumentUndoManager | |
200 * | |
201 * @since 3.2 | |
202 * @noextend This class is not intended to be subclassed by clients. | |
203 */ | |
204 public class TextViewerUndoManager : IUndoManager, IUndoManagerExtension { | |
205 | |
206 | |
207 /** | |
208 * Internal listener to mouse and key events. | |
209 */ | |
210 private class KeyAndMouseListener : MouseListener, KeyListener { | |
211 | |
212 /* | |
213 * @see MouseListener#mouseDoubleClick | |
214 */ | |
215 public void mouseDoubleClick(MouseEvent e) { | |
216 } | |
217 | |
218 /* | |
219 * If the right mouse button is pressed, the current editing command is closed | |
220 * @see MouseListener#mouseDown | |
221 */ | |
222 public void mouseDown(MouseEvent e) { | |
223 if (e.button is 1) | |
224 if (isConnected()) | |
225 fDocumentUndoManager.commit(); | |
226 } | |
227 | |
228 /* | |
229 * @see MouseListener#mouseUp | |
230 */ | |
231 public void mouseUp(MouseEvent e) { | |
232 } | |
233 | |
234 /* | |
235 * @see KeyListener#keyPressed | |
236 */ | |
237 public void keyReleased(KeyEvent e) { | |
238 } | |
239 | |
240 /* | |
241 * On cursor keys, the current editing command is closed | |
242 * @see KeyListener#keyPressed | |
243 */ | |
244 public void keyPressed(KeyEvent e) { | |
245 switch (e.keyCode) { | |
246 case DWT.ARROW_UP: | |
247 case DWT.ARROW_DOWN: | |
248 case DWT.ARROW_LEFT: | |
249 case DWT.ARROW_RIGHT: | |
250 if (isConnected()) { | |
251 fDocumentUndoManager.commit(); | |
252 } | |
253 break; | |
254 } | |
255 } | |
256 } | |
257 | |
258 | |
259 /** | |
260 * Internal text input listener. | |
261 */ | |
262 private class TextInputListener : ITextInputListener { | |
263 | |
264 /* | |
265 * @see dwtx.jface.text.ITextInputListener#inputDocumentAboutToBeChanged(dwtx.jface.text.IDocument, dwtx.jface.text.IDocument) | |
266 */ | |
267 public void inputDocumentAboutToBeChanged(IDocument oldInput, IDocument newInput) { | |
268 disconnectDocumentUndoManager(); | |
269 } | |
270 | |
271 /* | |
272 * @see dwtx.jface.text.ITextInputListener#inputDocumentChanged(dwtx.jface.text.IDocument, dwtx.jface.text.IDocument) | |
273 */ | |
274 public void inputDocumentChanged(IDocument oldInput, IDocument newInput) { | |
275 connectDocumentUndoManager(newInput); | |
276 } | |
277 } | |
278 | |
279 | |
280 /** | |
281 * Internal document undo listener. | |
282 */ | |
283 private class DocumentUndoListener : IDocumentUndoListener { | |
284 | |
285 /* | |
286 * @see dwtx.jface.text.IDocumentUndoListener#documentUndoNotification(DocumentUndoEvent) | |
287 */ | |
288 public void documentUndoNotification(DocumentUndoEvent event ){ | |
289 if (!isConnected()) return; | |
290 | |
291 int eventType= event.getEventType(); | |
292 if (((eventType & DocumentUndoEvent.ABOUT_TO_UNDO) !is 0) || ((eventType & DocumentUndoEvent.ABOUT_TO_REDO) !is 0)) { | |
293 if (event.isCompound()) { | |
294 ITextViewerExtension extension= null; | |
138 | 295 if ( cast(ITextViewerExtension)fTextViewer ) |
134 | 296 extension= cast(ITextViewerExtension) fTextViewer; |
129 | 297 |
298 if (extension !is null) | |
299 extension.setRedraw(false); | |
300 } | |
135 | 301 fTextViewer.getTextWidget().getDisplay().syncExec(new class() Runnable { |
129 | 302 public void run() { |
138 | 303 if ( cast(TextViewer)fTextViewer ) |
134 | 304 (cast(TextViewer)fTextViewer).ignoreAutoEditStrategies(true); |
129 | 305 } |
306 }); | |
307 | |
308 } else if (((eventType & DocumentUndoEvent.UNDONE) !is 0) || ((eventType & DocumentUndoEvent.REDONE) !is 0)) { | |
135 | 309 fTextViewer.getTextWidget().getDisplay().syncExec(new class() Runnable { |
129 | 310 public void run() { |
138 | 311 if ( cast(TextViewer)fTextViewer ) |
134 | 312 (cast(TextViewer)fTextViewer).ignoreAutoEditStrategies(false); |
129 | 313 } |
314 }); | |
315 if (event.isCompound()) { | |
316 ITextViewerExtension extension= null; | |
138 | 317 if ( cast(ITextViewerExtension)fTextViewer ) |
134 | 318 extension= cast(ITextViewerExtension) fTextViewer; |
129 | 319 |
320 if (extension !is null) | |
321 extension.setRedraw(true); | |
322 } | |
323 | |
324 // Reveal the change if this manager's viewer has the focus. | |
325 if (fTextViewer !is null) { | |
326 StyledText widget= fTextViewer.getTextWidget(); | |
327 if (widget !is null && !widget.isDisposed() && (widget.isFocusControl()))// || fTextViewer.getTextWidget() is control)) | |
328 selectAndReveal(event.getOffset(), event.getText() is null ? 0 : event.getText().length()); | |
329 } | |
330 } | |
331 } | |
332 | |
333 } | |
334 | |
335 /** The internal key and mouse event listener */ | |
336 private KeyAndMouseListener fKeyAndMouseListener; | |
337 /** The internal text input listener */ | |
338 private TextInputListener fTextInputListener; | |
339 | |
340 | |
341 /** The text viewer the undo manager is connected to */ | |
342 private ITextViewer fTextViewer; | |
343 | |
344 /** The undo level */ | |
345 private int fUndoLevel; | |
346 | |
347 /** The document undo manager that is active. */ | |
348 private IDocumentUndoManager fDocumentUndoManager; | |
349 | |
350 /** The document that is active. */ | |
351 private IDocument fDocument; | |
352 | |
353 /** The document undo listener */ | |
354 private IDocumentUndoListener fDocumentUndoListener; | |
355 | |
356 /** | |
357 * Creates a new undo manager who remembers the specified number of edit commands. | |
358 * | |
359 * @param undoLevel the length of this manager's history | |
360 */ | |
133
7d818bd32d63
Fix ctors to this with gvim regexp
Frank Benoit <benoit@tionex.de>
parents:
131
diff
changeset
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361 public this(int undoLevel) { |
129 | 362 fUndoLevel= undoLevel; |
363 } | |
364 | |
365 /** | |
366 * Returns whether this undo manager is connected to a text viewer. | |
367 * | |
368 * @return <code>true</code> if connected, <code>false</code> otherwise | |
369 */ | |
370 private bool isConnected() { | |
371 return fTextViewer !is null && fDocumentUndoManager !is null; | |
372 } | |
373 | |
374 /* | |
375 * @see IUndoManager#beginCompoundChange | |
376 */ | |
377 public void beginCompoundChange() { | |
378 if (isConnected()) { | |
379 fDocumentUndoManager.beginCompoundChange(); | |
380 } | |
381 } | |
382 | |
383 | |
384 /* | |
385 * @see IUndoManager#endCompoundChange | |
386 */ | |
387 public void endCompoundChange() { | |
388 if (isConnected()) { | |
389 fDocumentUndoManager.endCompoundChange(); | |
390 } | |
391 } | |
392 | |
393 /** | |
394 * Registers all necessary listeners with the text viewer. | |
395 */ | |
396 private void addListeners() { | |
397 StyledText text= fTextViewer.getTextWidget(); | |
398 if (text !is null) { | |
399 fKeyAndMouseListener= new KeyAndMouseListener(); | |
400 text.addMouseListener(fKeyAndMouseListener); | |
401 text.addKeyListener(fKeyAndMouseListener); | |
402 fTextInputListener= new TextInputListener(); | |
403 fTextViewer.addTextInputListener(fTextInputListener); | |
404 } | |
405 } | |
406 | |
407 /** | |
408 * Unregister all previously installed listeners from the text viewer. | |
409 */ | |
410 private void removeListeners() { | |
411 StyledText text= fTextViewer.getTextWidget(); | |
412 if (text !is null) { | |
413 if (fKeyAndMouseListener !is null) { | |
414 text.removeMouseListener(fKeyAndMouseListener); | |
415 text.removeKeyListener(fKeyAndMouseListener); | |
416 fKeyAndMouseListener= null; | |
417 } | |
418 if (fTextInputListener !is null) { | |
419 fTextViewer.removeTextInputListener(fTextInputListener); | |
420 fTextInputListener= null; | |
421 } | |
422 } | |
423 } | |
424 | |
425 /** | |
426 * Shows the given exception in an error dialog. | |
427 * | |
428 * @param title the dialog title | |
429 * @param ex the exception | |
430 */ | |
431 private void openErrorDialog(final String title, final Exception ex) { | |
432 Shell shell= null; | |
433 if (isConnected()) { | |
434 StyledText st= fTextViewer.getTextWidget(); | |
435 if (st !is null && !st.isDisposed()) | |
436 shell= st.getShell(); | |
437 } | |
438 if (Display.getCurrent() !is null) | |
439 MessageDialog.openError(shell, title, ex.getLocalizedMessage()); | |
440 else { | |
441 Display display; | |
442 final Shell finalShell= shell; | |
443 if (finalShell !is null) | |
444 display= finalShell.getDisplay(); | |
445 else | |
446 display= Display.getDefault(); | |
135 | 447 display.syncExec(new class() Runnable { |
129 | 448 public void run() { |
449 MessageDialog.openError(finalShell, title, ex.getLocalizedMessage()); | |
450 } | |
451 }); | |
452 } | |
453 } | |
454 | |
455 /* | |
456 * @see dwtx.jface.text.IUndoManager#setMaximalUndoLevel(int) | |
457 */ | |
458 public void setMaximalUndoLevel(int undoLevel) { | |
459 fUndoLevel= Math.max(0, undoLevel); | |
460 if (isConnected()) { | |
461 fDocumentUndoManager.setMaximalUndoLevel(fUndoLevel); | |
462 } | |
463 } | |
464 | |
465 /* | |
466 * @see dwtx.jface.text.IUndoManager#connect(dwtx.jface.text.ITextViewer) | |
467 */ | |
468 public void connect(ITextViewer textViewer) { | |
469 if (fTextViewer is null && textViewer !is null) { | |
470 fTextViewer= textViewer; | |
471 addListeners(); | |
472 } | |
473 IDocument doc= fTextViewer.getDocument(); | |
474 connectDocumentUndoManager(doc); | |
475 } | |
476 | |
477 /* | |
478 * @see dwtx.jface.text.IUndoManager#disconnect() | |
479 */ | |
480 public void disconnect() { | |
481 if (fTextViewer !is null) { | |
482 removeListeners(); | |
483 fTextViewer= null; | |
484 } | |
485 disconnectDocumentUndoManager(); | |
486 } | |
487 | |
488 /* | |
489 * @see dwtx.jface.text.IUndoManager#reset() | |
490 */ | |
491 public void reset() { | |
492 if (isConnected()) | |
493 fDocumentUndoManager.reset(); | |
494 | |
495 } | |
496 | |
497 /* | |
498 * @see dwtx.jface.text.IUndoManager#redoable() | |
499 */ | |
500 public bool redoable() { | |
501 if (isConnected()) | |
502 return fDocumentUndoManager.redoable(); | |
503 return false; | |
504 } | |
505 | |
506 /* | |
507 * @see dwtx.jface.text.IUndoManager#undoable() | |
508 */ | |
509 public bool undoable() { | |
510 if (isConnected()) | |
511 return fDocumentUndoManager.undoable(); | |
512 return false; | |
513 } | |
514 | |
515 /* | |
516 * @see dwtx.jface.text.IUndoManager#redo() | |
517 */ | |
518 public void redo() { | |
519 if (isConnected()) { | |
520 try { | |
521 fDocumentUndoManager.redo(); | |
522 } catch (ExecutionException ex) { | |
523 openErrorDialog(JFaceTextMessages.getString("DefaultUndoManager.error.redoFailed.title"), ex); //$NON-NLS-1$ | |
524 } | |
525 } | |
526 } | |
527 | |
528 /* | |
529 * @see dwtx.jface.text.IUndoManager#undo() | |
530 */ | |
531 public void undo() { | |
532 if (isConnected()) { | |
533 try { | |
534 fDocumentUndoManager.undo(); | |
535 } catch (ExecutionException ex) { | |
536 openErrorDialog(JFaceTextMessages.getString("DefaultUndoManager.error.undoFailed.title"), ex); //$NON-NLS-1$ | |
537 } | |
538 } | |
539 } | |
540 | |
541 /** | |
542 * Selects and reveals the specified range. | |
543 * | |
544 * @param offset the offset of the range | |
545 * @param length the length of the range | |
546 */ | |
547 private void selectAndReveal(int offset, int length) { | |
138 | 548 if ( cast(ITextViewerExtension5)fTextViewer ) { |
134 | 549 ITextViewerExtension5 extension= cast(ITextViewerExtension5) fTextViewer; |
129 | 550 extension.exposeModelRange(new Region(offset, length)); |
551 } else if (!fTextViewer.overlapsWithVisibleRegion(offset, length)) | |
552 fTextViewer.resetVisibleRegion(); | |
553 | |
554 fTextViewer.setSelectedRange(offset, length); | |
555 fTextViewer.revealRange(offset, length); | |
556 } | |
557 | |
558 /* | |
559 * @see dwtx.jface.text.IUndoManagerExtension#getUndoContext() | |
560 */ | |
561 public IUndoContext getUndoContext() { | |
562 if (isConnected()) { | |
563 return fDocumentUndoManager.getUndoContext(); | |
564 } | |
565 return null; | |
566 } | |
567 | |
568 private void connectDocumentUndoManager(IDocument document) { | |
569 disconnectDocumentUndoManager(); | |
570 if (document !is null) { | |
571 fDocument= document; | |
572 DocumentUndoManagerRegistry.connect(fDocument); | |
573 fDocumentUndoManager= DocumentUndoManagerRegistry.getDocumentUndoManager(fDocument); | |
574 fDocumentUndoManager.connect(this); | |
575 setMaximalUndoLevel(fUndoLevel); | |
576 fDocumentUndoListener= new DocumentUndoListener(); | |
577 fDocumentUndoManager.addDocumentUndoListener(fDocumentUndoListener); | |
578 } | |
579 } | |
580 | |
581 private void disconnectDocumentUndoManager() { | |
582 if (fDocumentUndoManager !is null) { | |
583 fDocumentUndoManager.disconnect(this); | |
584 DocumentUndoManagerRegistry.disconnect(fDocument); | |
585 fDocumentUndoManager.removeDocumentUndoListener(fDocumentUndoListener); | |
586 fDocumentUndoListener= null; | |
587 fDocumentUndoManager= null; | |
588 } | |
589 } | |
590 } |