Mercurial > projects > dwt-addons
annotate dwtx/jface/text/TextViewerUndoManager.d @ 162:1a5b8f8129df
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author | Frank Benoit <benoit@tionex.de> |
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date | Mon, 08 Sep 2008 00:51:37 +0200 |
parents | a9566845f1cb |
children | c3583c6ec027 |
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> | |
156 | 193 * |
129 | 194 * @see ITextViewer |
195 * @see ITextInputListener | |
196 * @see IDocumentUndoManager | |
197 * @see MouseListener | |
198 * @see KeyListener | |
199 * @see DocumentUndoManager | |
156 | 200 * |
129 | 201 * @since 3.2 |
202 * @noextend This class is not intended to be subclassed by clients. | |
203 */ | |
204 public class TextViewerUndoManager : IUndoManager, IUndoManagerExtension { | |
205 | |
156 | 206 |
129 | 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; | |
156 | 290 |
129 | 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 ) |
162 | 304 (cast(TextViewer)fTextViewer).ignoreAutoEditStrategies_package(true); |
129 | 305 } |
306 }); | |
156 | 307 |
129 | 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 ) |
162 | 312 (cast(TextViewer)fTextViewer).ignoreAutoEditStrategies_package(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 } | |
156 | 323 |
129 | 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; | |
156 | 343 |
129 | 344 /** The undo level */ |
345 private int fUndoLevel; | |
156 | 346 |
129 | 347 /** The document undo manager that is active. */ |
348 private IDocumentUndoManager fDocumentUndoManager; | |
156 | 349 |
129 | 350 /** The document that is active. */ |
351 private IDocument fDocument; | |
156 | 352 |
129 | 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 */ | |
156 | 431 private void openErrorDialog(String title, Exception ex) { |
129 | 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) | |
162 | 439 MessageDialog.openError(shell, title, ex.msg/+getLocalizedMessage()+/); |
129 | 440 else { |
441 Display display; | |
156 | 442 Shell finalShell= shell; |
129 | 443 if (finalShell !is null) |
444 display= finalShell.getDisplay(); | |
445 else | |
446 display= Display.getDefault(); | |
156 | 447 display.syncExec(dgRunnable((Shell finalShell_, String title_, Exception ex_ ) { |
162 | 448 MessageDialog.openError(finalShell_, title_, ex_.msg/+getLocalizedMessage()+/); |
156 | 449 },finalShell, title, ex )); |
129 | 450 } |
451 } | |
452 | |
453 /* | |
454 * @see dwtx.jface.text.IUndoManager#setMaximalUndoLevel(int) | |
455 */ | |
456 public void setMaximalUndoLevel(int undoLevel) { | |
457 fUndoLevel= Math.max(0, undoLevel); | |
458 if (isConnected()) { | |
459 fDocumentUndoManager.setMaximalUndoLevel(fUndoLevel); | |
460 } | |
461 } | |
462 | |
463 /* | |
464 * @see dwtx.jface.text.IUndoManager#connect(dwtx.jface.text.ITextViewer) | |
465 */ | |
466 public void connect(ITextViewer textViewer) { | |
467 if (fTextViewer is null && textViewer !is null) { | |
468 fTextViewer= textViewer; | |
469 addListeners(); | |
470 } | |
471 IDocument doc= fTextViewer.getDocument(); | |
472 connectDocumentUndoManager(doc); | |
473 } | |
474 | |
475 /* | |
476 * @see dwtx.jface.text.IUndoManager#disconnect() | |
477 */ | |
478 public void disconnect() { | |
479 if (fTextViewer !is null) { | |
480 removeListeners(); | |
481 fTextViewer= null; | |
482 } | |
483 disconnectDocumentUndoManager(); | |
484 } | |
485 | |
486 /* | |
487 * @see dwtx.jface.text.IUndoManager#reset() | |
488 */ | |
489 public void reset() { | |
490 if (isConnected()) | |
491 fDocumentUndoManager.reset(); | |
156 | 492 |
129 | 493 } |
494 | |
495 /* | |
496 * @see dwtx.jface.text.IUndoManager#redoable() | |
497 */ | |
498 public bool redoable() { | |
499 if (isConnected()) | |
500 return fDocumentUndoManager.redoable(); | |
501 return false; | |
502 } | |
503 | |
504 /* | |
505 * @see dwtx.jface.text.IUndoManager#undoable() | |
506 */ | |
507 public bool undoable() { | |
508 if (isConnected()) | |
509 return fDocumentUndoManager.undoable(); | |
510 return false; | |
511 } | |
512 | |
513 /* | |
514 * @see dwtx.jface.text.IUndoManager#redo() | |
515 */ | |
516 public void redo() { | |
517 if (isConnected()) { | |
518 try { | |
519 fDocumentUndoManager.redo(); | |
520 } catch (ExecutionException ex) { | |
521 openErrorDialog(JFaceTextMessages.getString("DefaultUndoManager.error.redoFailed.title"), ex); //$NON-NLS-1$ | |
522 } | |
523 } | |
524 } | |
525 | |
526 /* | |
527 * @see dwtx.jface.text.IUndoManager#undo() | |
528 */ | |
529 public void undo() { | |
530 if (isConnected()) { | |
531 try { | |
532 fDocumentUndoManager.undo(); | |
533 } catch (ExecutionException ex) { | |
534 openErrorDialog(JFaceTextMessages.getString("DefaultUndoManager.error.undoFailed.title"), ex); //$NON-NLS-1$ | |
535 } | |
536 } | |
537 } | |
538 | |
539 /** | |
540 * Selects and reveals the specified range. | |
541 * | |
542 * @param offset the offset of the range | |
543 * @param length the length of the range | |
544 */ | |
545 private void selectAndReveal(int offset, int length) { | |
138 | 546 if ( cast(ITextViewerExtension5)fTextViewer ) { |
134 | 547 ITextViewerExtension5 extension= cast(ITextViewerExtension5) fTextViewer; |
129 | 548 extension.exposeModelRange(new Region(offset, length)); |
549 } else if (!fTextViewer.overlapsWithVisibleRegion(offset, length)) | |
550 fTextViewer.resetVisibleRegion(); | |
551 | |
552 fTextViewer.setSelectedRange(offset, length); | |
553 fTextViewer.revealRange(offset, length); | |
554 } | |
555 | |
556 /* | |
557 * @see dwtx.jface.text.IUndoManagerExtension#getUndoContext() | |
558 */ | |
559 public IUndoContext getUndoContext() { | |
560 if (isConnected()) { | |
561 return fDocumentUndoManager.getUndoContext(); | |
562 } | |
563 return null; | |
564 } | |
156 | 565 |
129 | 566 private void connectDocumentUndoManager(IDocument document) { |
567 disconnectDocumentUndoManager(); | |
568 if (document !is null) { | |
569 fDocument= document; | |
570 DocumentUndoManagerRegistry.connect(fDocument); | |
571 fDocumentUndoManager= DocumentUndoManagerRegistry.getDocumentUndoManager(fDocument); | |
572 fDocumentUndoManager.connect(this); | |
573 setMaximalUndoLevel(fUndoLevel); | |
574 fDocumentUndoListener= new DocumentUndoListener(); | |
575 fDocumentUndoManager.addDocumentUndoListener(fDocumentUndoListener); | |
576 } | |
577 } | |
578 | |
579 private void disconnectDocumentUndoManager() { | |
580 if (fDocumentUndoManager !is null) { | |
581 fDocumentUndoManager.disconnect(this); | |
582 DocumentUndoManagerRegistry.disconnect(fDocument); | |
583 fDocumentUndoManager.removeDocumentUndoListener(fDocumentUndoListener); | |
584 fDocumentUndoListener= null; | |
585 fDocumentUndoManager= null; | |
586 } | |
587 } | |
588 } |