Mercurial > projects > dwt-addons
annotate dwtx/jface/text/source/projection/ProjectionViewer.d @ 159:7926b636c282
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| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Wed, 27 Aug 2008 01:57:58 +0200 |
| parents | 25f1f92fa3df |
| children | 1a5b8f8129df |
| rev | line source |
|---|---|
| 129 | 1 /******************************************************************************* |
| 2 * Copyright (c) 2000, 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 module dwtx.jface.text.source.projection.ProjectionViewer; | |
| 14 | |
| 131 | 15 import dwtx.jface.text.source.projection.ProjectionSupport; // packageimport |
| 16 import dwtx.jface.text.source.projection.IProjectionPosition; // packageimport | |
| 17 import dwtx.jface.text.source.projection.AnnotationBag; // packageimport | |
| 18 import dwtx.jface.text.source.projection.ProjectionSummary; // packageimport | |
| 19 import dwtx.jface.text.source.projection.ProjectionAnnotationHover; // packageimport | |
| 20 import dwtx.jface.text.source.projection.ProjectionRulerColumn; // packageimport | |
| 21 import dwtx.jface.text.source.projection.ProjectionAnnotationModel; // packageimport | |
| 22 import dwtx.jface.text.source.projection.SourceViewerInformationControl; // packageimport | |
| 23 import dwtx.jface.text.source.projection.IProjectionListener; // packageimport | |
| 24 import dwtx.jface.text.source.projection.ProjectionAnnotation; // packageimport | |
| 25 | |
| 26 | |
| 129 | 27 import dwt.dwthelper.utils; |
| 28 | |
|
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29 import dwtx.dwtxhelper.Collection; |
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31 |
| 129 | 32 |
| 33 import dwt.DWTError; | |
| 34 import dwt.custom.ST; | |
| 35 import dwt.custom.StyledText; | |
| 36 import dwt.dnd.Clipboard; | |
| 37 import dwt.dnd.DND; | |
| 38 import dwt.dnd.TextTransfer; | |
| 39 import dwt.dnd.Transfer; | |
| 40 import dwt.events.VerifyEvent; | |
| 41 import dwt.graphics.Point; | |
| 42 import dwt.widgets.Composite; | |
| 43 import dwt.widgets.Display; | |
| 44 import dwtx.core.runtime.Assert; | |
| 45 import dwtx.jface.text.BadLocationException; | |
| 46 import dwtx.jface.text.DocumentEvent; | |
| 47 import dwtx.jface.text.FindReplaceDocumentAdapter; | |
| 48 import dwtx.jface.text.IDocument; | |
| 49 import dwtx.jface.text.IDocumentInformationMappingExtension; | |
| 50 import dwtx.jface.text.IDocumentListener; | |
| 51 import dwtx.jface.text.IRegion; | |
| 52 import dwtx.jface.text.ISlaveDocumentManager; | |
| 53 import dwtx.jface.text.ITextViewerExtension5; | |
| 54 import dwtx.jface.text.Position; | |
| 55 import dwtx.jface.text.Region; | |
| 56 import dwtx.jface.text.TextUtilities; | |
| 57 import dwtx.jface.text.projection.ProjectionDocument; | |
| 58 import dwtx.jface.text.projection.ProjectionDocumentEvent; | |
| 59 import dwtx.jface.text.projection.ProjectionDocumentManager; | |
| 60 import dwtx.jface.text.source.Annotation; | |
| 61 import dwtx.jface.text.source.AnnotationModelEvent; | |
| 62 import dwtx.jface.text.source.CompositeRuler; | |
| 63 import dwtx.jface.text.source.IAnnotationModel; | |
| 64 import dwtx.jface.text.source.IAnnotationModelExtension; | |
| 65 import dwtx.jface.text.source.IAnnotationModelListener; | |
| 66 import dwtx.jface.text.source.IAnnotationModelListenerExtension; | |
| 67 import dwtx.jface.text.source.IOverviewRuler; | |
| 68 import dwtx.jface.text.source.IVerticalRuler; | |
| 69 import dwtx.jface.text.source.IVerticalRulerColumn; | |
| 70 import dwtx.jface.text.source.SourceViewer; | |
| 71 | |
| 72 | |
| 73 /** | |
| 74 * A projection source viewer is a source viewer which supports multiple visible | |
| 75 * regions which can dynamically be changed. | |
| 76 * <p> | |
| 77 * A projection source viewer uses a <code>ProjectionDocumentManager</code> | |
| 78 * for the management of the visible document.</p> | |
| 79 * <p> | |
| 80 * NOTE: The <code>ProjectionViewer</code> only supports projections that cover full lines. | |
| 81 * </p> | |
| 82 * <p> | |
| 83 * This class should not be subclassed.</p> | |
| 84 * | |
| 85 * @since 3.0 | |
| 86 * @noextend This class is not intended to be subclassed by clients. | |
| 87 */ | |
| 88 public class ProjectionViewer : SourceViewer , ITextViewerExtension5 { | |
| 89 | |
| 147 | 90 private static const int BASE= INFORMATION; // see ISourceViewer.INFORMATION |
| 129 | 91 |
| 92 /** Operation constant for the expand operation. */ | |
| 147 | 93 public static const int EXPAND= BASE + 1; |
| 129 | 94 /** Operation constant for the collapse operation. */ |
| 147 | 95 public static const int COLLAPSE= BASE + 2; |
| 129 | 96 /** Operation constant for the toggle projection operation. */ |
| 147 | 97 public static const int TOGGLE= BASE + 3; |
| 129 | 98 /** Operation constant for the expand all operation. */ |
| 147 | 99 public static const int EXPAND_ALL= BASE + 4; |
| 129 | 100 /** |
| 101 * Operation constant for the collapse all operation. | |
| 145 | 102 * |
| 129 | 103 * @since 3.2 |
| 104 */ | |
| 147 | 105 public static const int COLLAPSE_ALL= BASE + 5; |
| 129 | 106 |
| 107 /** | |
| 108 * Internal listener to changes of the annotation model. | |
| 109 */ | |
| 110 private class AnnotationModelListener : IAnnotationModelListener, IAnnotationModelListenerExtension { | |
| 111 | |
| 112 /* | |
| 113 * @see dwtx.jface.text.source.IAnnotationModelListener#modelChanged(dwtx.jface.text.source.IAnnotationModel) | |
| 114 */ | |
| 115 public void modelChanged(IAnnotationModel model) { | |
| 116 processModelChanged(model, null); | |
| 117 } | |
| 118 | |
| 119 /* | |
| 120 * @see dwtx.jface.text.source.IAnnotationModelListenerExtension#modelChanged(dwtx.jface.text.source.AnnotationModelEvent) | |
| 121 */ | |
| 122 public void modelChanged(AnnotationModelEvent event) { | |
| 123 processModelChanged(event.getAnnotationModel(), event); | |
| 124 } | |
| 125 | |
| 126 private void processModelChanged(IAnnotationModel model, AnnotationModelEvent event) { | |
| 127 if (model is fProjectionAnnotationModel) { | |
| 128 | |
| 129 if (fProjectionSummary !is null) | |
| 130 fProjectionSummary.updateSummaries(); | |
| 131 processCatchupRequest(event); | |
| 132 | |
| 133 } else if (model is getAnnotationModel() && fProjectionSummary !is null) | |
| 134 fProjectionSummary.updateSummaries(); | |
| 135 } | |
| 136 } | |
| 137 | |
| 138 /** | |
| 139 * Executes the 'replaceVisibleDocument' operation when called the first time. Self-destructs afterwards. | |
| 140 */ | |
| 141 private class ReplaceVisibleDocumentExecutor : IDocumentListener { | |
| 142 | |
| 143 private IDocument fSlaveDocument; | |
| 144 private IDocument fExecutionTrigger; | |
| 145 | |
| 146 /** | |
| 147 * Creates a new executor in order to free the given slave document. | |
| 148 * | |
| 149 * @param slaveDocument the slave document to free | |
| 150 */ | |
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151 public this(IDocument slaveDocument) { |
| 129 | 152 fSlaveDocument= slaveDocument; |
| 153 } | |
| 154 | |
| 155 /** | |
| 156 * Installs this executor on the given trigger document. | |
| 157 * | |
| 158 * @param executionTrigger the trigger document | |
| 159 */ | |
| 160 public void install(IDocument executionTrigger) { | |
| 161 if (executionTrigger !is null && fSlaveDocument !is null) { | |
| 162 fExecutionTrigger= executionTrigger; | |
| 163 fExecutionTrigger.addDocumentListener(this); | |
| 164 } | |
| 165 } | |
| 166 | |
| 167 /* | |
| 168 * @see dwtx.jface.text.IDocumentListener#documentAboutToBeChanged(dwtx.jface.text.DocumentEvent) | |
| 169 */ | |
| 170 public void documentAboutToBeChanged(DocumentEvent event) { | |
| 171 } | |
| 172 | |
| 173 /* | |
| 174 * @see dwtx.jface.text.IDocumentListener#documentChanged(dwtx.jface.text.DocumentEvent) | |
| 175 */ | |
| 176 public void documentChanged(DocumentEvent event) { | |
| 177 fExecutionTrigger.removeDocumentListener(this); | |
| 178 executeReplaceVisibleDocument(fSlaveDocument); | |
| 179 } | |
| 180 } | |
| 181 | |
| 182 /** | |
| 183 * A command representing a change of the projection document. This can be either | |
| 184 * adding a master document range, removing a master document change, or invalidating | |
| 185 * the viewer text presentation. | |
| 186 */ | |
| 187 private static class ProjectionCommand { | |
| 188 | |
| 189 final static int ADD= 0; | |
| 190 final static int REMOVE= 1; | |
| 191 final static int INVALIDATE_PRESENTATION= 2; | |
| 192 | |
| 193 ProjectionDocument fProjection; | |
| 194 int fType; | |
| 195 int fOffset; | |
| 196 int fLength; | |
| 197 | |
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198 this(ProjectionDocument projection, int type, int offset, int length) { |
| 129 | 199 fProjection= projection; |
| 200 fType= type; | |
| 201 fOffset= offset; | |
| 202 fLength= length; | |
| 203 } | |
| 204 | |
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205 this(int offset, int length) { |
| 129 | 206 fType= INVALIDATE_PRESENTATION; |
| 207 fOffset= offset; | |
| 208 fLength= length; | |
| 209 } | |
| 210 | |
| 211 int computeExpectedCosts() { | |
| 212 | |
| 213 switch(fType) { | |
| 214 case ADD: { | |
| 215 try { | |
| 216 IRegion[] gaps= fProjection.computeUnprojectedMasterRegions(fOffset, fLength); | |
| 217 return gaps is null ? 0 : gaps.length; | |
| 218 } catch (BadLocationException x) { | |
| 219 } | |
| 220 break; | |
| 221 } | |
| 222 case REMOVE: { | |
| 223 try { | |
| 224 IRegion[] fragments= fProjection.computeProjectedMasterRegions(fOffset, fLength); | |
| 225 return fragments is null ? 0 : fragments.length; | |
| 226 } catch (BadLocationException x) { | |
| 227 } | |
| 228 break; | |
| 229 } | |
| 230 } | |
| 231 return 0; | |
| 232 } | |
| 233 } | |
| 234 | |
| 235 /** | |
| 236 * The queue of projection command objects. | |
| 237 */ | |
| 238 private static class ProjectionCommandQueue { | |
| 239 | |
| 240 final static int REDRAW_COSTS= 15; | |
| 241 final static int INVALIDATION_COSTS= 10; | |
| 242 | |
| 243 List fList= new ArrayList(15); | |
| 244 int fExpectedExecutionCosts= -1; | |
| 245 | |
| 246 | |
| 247 void add(ProjectionCommand command) { | |
| 248 fList.add(command); | |
| 249 } | |
| 250 | |
| 251 Iterator iterator() { | |
| 252 return fList.iterator(); | |
| 253 } | |
| 254 | |
| 255 void clear() { | |
| 256 fList.clear(); | |
| 257 fExpectedExecutionCosts= -1; | |
| 258 } | |
| 259 | |
| 260 bool passedRedrawCostsThreshold() { | |
| 261 if (fExpectedExecutionCosts is -1) | |
| 262 computeExpectedExecutionCosts(); | |
| 263 return fExpectedExecutionCosts > REDRAW_COSTS; | |
| 264 } | |
| 265 | |
| 266 bool passedInvalidationCostsThreshold() { | |
| 267 if (fExpectedExecutionCosts is -1) | |
| 268 computeExpectedExecutionCosts(); | |
| 269 return fExpectedExecutionCosts > INVALIDATION_COSTS; | |
| 270 } | |
| 271 | |
| 272 private void computeExpectedExecutionCosts() { | |
| 273 int max_costs= Math.max(REDRAW_COSTS, INVALIDATION_COSTS); | |
| 274 fExpectedExecutionCosts= fList.size(); | |
| 275 if (fExpectedExecutionCosts <= max_costs) { | |
| 276 ProjectionCommand command; | |
| 277 Iterator e= fList.iterator(); | |
| 278 while (e.hasNext()) { | |
| 134 | 279 command= cast(ProjectionCommand) e.next(); |
| 129 | 280 fExpectedExecutionCosts += command.computeExpectedCosts(); |
| 281 if (fExpectedExecutionCosts > max_costs) | |
| 282 break; | |
| 283 } | |
| 284 } | |
| 285 } | |
| 286 } | |
| 287 | |
| 288 /** The projection annotation model used by this viewer. */ | |
| 289 private ProjectionAnnotationModel fProjectionAnnotationModel; | |
| 290 /** The annotation model listener */ | |
| 159 | 291 private IAnnotationModelListener fAnnotationModelListener; |
| 129 | 292 /** The projection summary. */ |
| 293 private ProjectionSummary fProjectionSummary; | |
| 294 /** Indication that an annotation world change has not yet been processed. */ | |
| 295 private bool fPendingAnnotationWorldChange= false; | |
| 296 /** Indication whether projection changes in the visible document should be considered. */ | |
| 297 private bool fHandleProjectionChanges= true; | |
| 298 /** The list of projection listeners. */ | |
| 299 private List fProjectionListeners; | |
| 300 /** Internal lock for protecting the list of pending requests */ | |
| 159 | 301 private Object fLock; |
| 129 | 302 /** The list of pending requests */ |
| 159 | 303 private List fPendingRequests; |
| 129 | 304 /** The replace-visible-document execution trigger */ |
| 305 private IDocument fReplaceVisibleDocumentExecutionTrigger; | |
| 306 /** <code>true</code> if projection was on the last time we switched to segmented mode. */ | |
| 307 private bool fWasProjectionEnabled; | |
| 308 /** The queue of projection commands used to assess the costs of projection changes. */ | |
| 309 private ProjectionCommandQueue fCommandQueue; | |
| 310 /** | |
| 311 * The amount of lines deleted by the last document event issued by the | |
| 312 * visible document event. | |
| 313 * @since 3.1 | |
| 314 */ | |
| 315 private int fDeletedLines; | |
| 316 | |
| 317 | |
| 318 /** | |
| 319 * Creates a new projection source viewer. | |
| 320 * | |
| 321 * @param parent the DWT parent control | |
| 322 * @param ruler the vertical ruler | |
| 323 * @param overviewRuler the overview ruler | |
| 324 * @param showsAnnotationOverview <code>true</code> if the overview ruler should be shown | |
| 325 * @param styles the DWT style bits | |
| 326 */ | |
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327 public this(Composite parent, IVerticalRuler ruler, IOverviewRuler overviewRuler, bool showsAnnotationOverview, int styles) { |
| 159 | 328 |
| 329 fAnnotationModelListener= new AnnotationModelListener(); | |
| 330 fLock= new Object(); | |
| 331 fPendingRequests= new ArrayList(); | |
| 332 | |
| 129 | 333 super(parent, ruler, overviewRuler, showsAnnotationOverview, styles); |
| 334 } | |
| 335 | |
| 336 /** | |
| 337 * Sets the projection summary for this viewer. | |
| 338 * | |
| 339 * @param projectionSummary the projection summary. | |
| 340 */ | |
| 341 public void setProjectionSummary(ProjectionSummary projectionSummary) { | |
| 342 fProjectionSummary= projectionSummary; | |
| 343 } | |
| 344 | |
| 345 /** | |
| 346 * Adds the projection annotation model to the given annotation model. | |
| 347 * | |
| 348 * @param model the model to which the projection annotation model is added | |
| 349 */ | |
| 350 private void addProjectionAnnotationModel(IAnnotationModel model) { | |
| 138 | 351 if ( cast(IAnnotationModelExtension)model ) { |
| 134 | 352 IAnnotationModelExtension extension= cast(IAnnotationModelExtension) model; |
| 129 | 353 extension.addAnnotationModel(ProjectionSupport.PROJECTION, fProjectionAnnotationModel); |
| 354 model.addAnnotationModelListener(fAnnotationModelListener); | |
| 355 } | |
| 356 } | |
| 357 | |
| 358 /** | |
| 359 * Removes the projection annotation model from the given annotation model. | |
| 360 * | |
| 361 * @param model the mode from which the projection annotation model is removed | |
| 362 * @return the removed projection annotation model or <code>null</code> if there was none | |
| 363 */ | |
| 364 private IAnnotationModel removeProjectionAnnotationModel(IAnnotationModel model) { | |
| 138 | 365 if ( cast(IAnnotationModelExtension)model ) { |
| 129 | 366 model.removeAnnotationModelListener(fAnnotationModelListener); |
| 134 | 367 IAnnotationModelExtension extension= cast(IAnnotationModelExtension) model; |
| 129 | 368 return extension.removeAnnotationModel(ProjectionSupport.PROJECTION); |
| 369 } | |
| 370 return null; | |
| 371 } | |
| 372 | |
| 373 /* | |
| 374 * @see dwtx.jface.text.source.SourceViewer#setDocument(dwtx.jface.text.IDocument, dwtx.jface.text.source.IAnnotationModel, int, int) | |
| 375 */ | |
| 376 public void setDocument(IDocument document, IAnnotationModel annotationModel, int modelRangeOffset, int modelRangeLength) { | |
| 377 bool wasProjectionEnabled= false; | |
| 378 | |
| 379 synchronized (fLock) { | |
| 380 fPendingRequests.clear(); | |
| 381 } | |
| 382 | |
| 383 if (fProjectionAnnotationModel !is null) { | |
| 384 wasProjectionEnabled= removeProjectionAnnotationModel(getVisualAnnotationModel()) !is null; | |
| 385 fProjectionAnnotationModel= null; | |
| 386 } | |
| 387 | |
| 388 super.setDocument(document, annotationModel, modelRangeOffset, modelRangeLength); | |
| 389 | |
| 390 if (wasProjectionEnabled && document !is null) | |
| 391 enableProjection(); | |
| 392 } | |
| 393 | |
| 394 /* | |
| 395 * @see dwtx.jface.text.source.SourceViewer#createVisualAnnotationModel(dwtx.jface.text.source.IAnnotationModel) | |
| 396 */ | |
| 397 protected IAnnotationModel createVisualAnnotationModel(IAnnotationModel annotationModel) { | |
| 398 IAnnotationModel model= super.createVisualAnnotationModel(annotationModel); | |
| 399 fProjectionAnnotationModel= new ProjectionAnnotationModel(); | |
| 400 return model; | |
| 401 } | |
| 402 | |
| 403 /** | |
| 404 * Returns the projection annotation model. | |
| 405 * | |
| 406 * @return the projection annotation model | |
| 407 */ | |
| 408 public ProjectionAnnotationModel getProjectionAnnotationModel() { | |
| 409 IAnnotationModel model= getVisualAnnotationModel(); | |
| 138 | 410 if ( cast(IAnnotationModelExtension)model ) { |
| 134 | 411 IAnnotationModelExtension extension= cast(IAnnotationModelExtension) model; |
| 412 return cast(ProjectionAnnotationModel) extension.getAnnotationModel(ProjectionSupport.PROJECTION); | |
| 129 | 413 } |
| 414 return null; | |
| 415 } | |
| 416 | |
| 417 /* | |
| 418 * @see dwtx.jface.text.TextViewer#createSlaveDocumentManager() | |
| 419 */ | |
| 420 protected ISlaveDocumentManager createSlaveDocumentManager() { | |
| 421 return new ProjectionDocumentManager(); | |
| 422 } | |
| 423 | |
| 424 /* | |
| 425 * @see dwtx.jface.text.TextViewer#updateSlaveDocument(dwtx.jface.text.IDocument, int, int) | |
| 426 */ | |
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427 protected bool updateSlaveDocument(IDocument slaveDocument, int modelRangeOffset, int modelRangeLength) { |
| 138 | 428 if ( cast(ProjectionDocument)slaveDocument ) { |
| 134 | 429 ProjectionDocument projection= cast(ProjectionDocument) slaveDocument; |
| 129 | 430 |
| 431 int offset= modelRangeOffset; | |
| 432 int length= modelRangeLength; | |
| 433 | |
| 434 if (!isProjectionMode()) { | |
| 435 // mimic original TextViewer behavior | |
| 436 IDocument master= projection.getMasterDocument(); | |
| 437 int line= master.getLineOfOffset(modelRangeOffset); | |
| 438 offset= master.getLineOffset(line); | |
| 439 length= (modelRangeOffset - offset) + modelRangeLength; | |
| 440 | |
| 441 } | |
| 442 | |
| 443 try { | |
| 444 fHandleProjectionChanges= false; | |
| 445 projection.replaceMasterDocumentRanges(offset, length); | |
| 446 } finally { | |
| 447 fHandleProjectionChanges= true; | |
| 448 } | |
| 449 return true; | |
| 450 } | |
| 451 return false; | |
| 452 } | |
| 453 | |
| 454 /** | |
| 455 * Adds a projection annotation listener to this viewer. The listener may | |
| 456 * not be <code>null</code>. If the listener is already registered, this method | |
| 457 * does not have any effect. | |
| 458 * | |
| 459 * @param listener the listener to add | |
| 460 */ | |
| 461 public void addProjectionListener(IProjectionListener listener) { | |
| 462 | |
| 463 Assert.isNotNull(listener); | |
| 464 | |
| 465 if (fProjectionListeners is null) | |
| 466 fProjectionListeners= new ArrayList(); | |
| 467 | |
| 468 if (!fProjectionListeners.contains(listener)) | |
| 469 fProjectionListeners.add(listener); | |
| 470 } | |
| 471 | |
| 472 /** | |
| 473 * Removes the given listener from this viewer. The listener may not be | |
| 474 * <code>null</code>. If the listener is not registered with this viewer, | |
| 475 * this method is without effect. | |
| 476 * | |
| 477 * @param listener the listener to remove | |
| 478 */ | |
| 479 public void removeProjectionListener(IProjectionListener listener) { | |
| 480 | |
| 481 Assert.isNotNull(listener); | |
| 482 | |
| 483 if (fProjectionListeners !is null) { | |
| 484 fProjectionListeners.remove(listener); | |
| 485 if (fProjectionListeners.size() is 0) | |
| 486 fProjectionListeners= null; | |
| 487 } | |
| 488 } | |
| 489 | |
| 490 /** | |
| 491 * Notifies all registered projection listeners | |
| 492 * that projection mode has been enabled. | |
| 493 */ | |
| 494 protected void fireProjectionEnabled() { | |
| 495 if (fProjectionListeners !is null) { | |
| 145 | 496 Iterator e= (new ArrayList(fProjectionListeners)).iterator(); |
| 129 | 497 while (e.hasNext()) { |
| 134 | 498 IProjectionListener l= cast(IProjectionListener) e.next(); |
| 129 | 499 l.projectionEnabled(); |
| 500 } | |
| 501 } | |
| 502 } | |
| 503 | |
| 504 /** | |
| 505 * Notifies all registered projection listeners | |
| 506 * that projection mode has been disabled. | |
| 507 */ | |
| 508 protected void fireProjectionDisabled() { | |
| 509 if (fProjectionListeners !is null) { | |
| 145 | 510 Iterator e= (new ArrayList(fProjectionListeners)).iterator(); |
| 129 | 511 while (e.hasNext()) { |
| 134 | 512 IProjectionListener l= cast(IProjectionListener) e.next(); |
| 129 | 513 l.projectionDisabled(); |
| 514 } | |
| 515 } | |
| 516 } | |
| 517 | |
| 518 /** | |
| 519 * Returns whether this viewer is in projection mode. | |
| 520 * | |
| 521 * @return <code>true</code> if this viewer is in projection mode, | |
| 522 * <code>false</code> otherwise | |
| 523 */ | |
| 524 public final bool isProjectionMode() { | |
| 525 return getProjectionAnnotationModel() !is null; | |
| 526 } | |
| 527 | |
| 528 /** | |
| 529 * Disables the projection mode. | |
| 530 */ | |
| 531 public final void disableProjection() { | |
| 532 if (isProjectionMode()) { | |
| 533 removeProjectionAnnotationModel(getVisualAnnotationModel()); | |
| 534 fProjectionAnnotationModel.removeAllAnnotations(); | |
| 535 fFindReplaceDocumentAdapter= null; | |
| 536 fireProjectionDisabled(); | |
| 537 } | |
| 538 } | |
| 539 | |
| 540 /** | |
| 541 * Enables the projection mode. | |
| 542 */ | |
| 543 public final void enableProjection() { | |
| 544 if (!isProjectionMode()) { | |
| 545 addProjectionAnnotationModel(getVisualAnnotationModel()); | |
| 546 fFindReplaceDocumentAdapter= null; | |
| 547 fireProjectionEnabled(); | |
| 548 } | |
| 549 } | |
| 550 | |
| 551 private void expandAll() { | |
| 552 int offset= 0; | |
| 553 IDocument doc= getDocument(); | |
| 554 int length= doc is null ? 0 : doc.getLength(); | |
| 555 if (isProjectionMode()) { | |
| 556 fProjectionAnnotationModel.expandAll(offset, length); | |
| 557 } | |
| 558 } | |
| 559 | |
| 560 private void expand() { | |
| 561 if (isProjectionMode()) { | |
| 562 Position found= null; | |
| 563 Annotation bestMatch= null; | |
| 564 Point selection= getSelectedRange(); | |
| 565 for (Iterator e= fProjectionAnnotationModel.getAnnotationIterator(); e.hasNext();) { | |
| 134 | 566 ProjectionAnnotation annotation= cast(ProjectionAnnotation) e.next(); |
| 129 | 567 if (annotation.isCollapsed()) { |
| 568 Position position= fProjectionAnnotationModel.getPosition(annotation); | |
| 569 // take the first most fine grained match | |
| 570 if (position !is null && touches(selection, position)) | |
| 571 if (found is null || position.includes(found.offset) && position.includes(found.offset + found.length)) { | |
| 572 found= position; | |
| 573 bestMatch= annotation; | |
| 574 } | |
| 575 } | |
| 576 } | |
| 577 | |
| 578 if (bestMatch !is null) { | |
| 579 fProjectionAnnotationModel.expand(bestMatch); | |
| 580 revealRange(selection.x, selection.y); | |
| 581 } | |
| 582 } | |
| 583 } | |
| 584 | |
| 585 private bool touches(Point selection, Position position) { | |
| 586 return position.overlapsWith(selection.x, selection.y) || selection.y is 0 && position.offset + position.length is selection.x + selection.y; | |
| 587 } | |
| 588 | |
| 589 private void collapse() { | |
| 590 if (isProjectionMode()) { | |
| 591 Position found= null; | |
| 592 Annotation bestMatch= null; | |
| 593 Point selection= getSelectedRange(); | |
| 594 for (Iterator e= fProjectionAnnotationModel.getAnnotationIterator(); e.hasNext();) { | |
| 134 | 595 ProjectionAnnotation annotation= cast(ProjectionAnnotation) e.next(); |
| 129 | 596 if (!annotation.isCollapsed()) { |
| 597 Position position= fProjectionAnnotationModel.getPosition(annotation); | |
| 598 // take the first most fine grained match | |
| 599 if (position !is null && touches(selection, position)) | |
| 600 if (found is null || found.includes(position.offset) && found.includes(position.offset + position.length)) { | |
| 601 found= position; | |
| 602 bestMatch= annotation; | |
| 603 } | |
| 604 } | |
| 605 } | |
| 606 | |
| 607 if (bestMatch !is null) { | |
| 608 fProjectionAnnotationModel.collapse(bestMatch); | |
| 609 revealRange(selection.x, selection.y); | |
| 610 } | |
| 611 } | |
| 612 } | |
| 613 | |
| 614 /* | |
| 615 * @since 3.2 | |
| 616 */ | |
| 617 private void collapseAll() { | |
| 618 int offset= 0; | |
| 619 IDocument doc= getDocument(); | |
| 620 int length= doc is null ? 0 : doc.getLength(); | |
| 621 if (isProjectionMode()) { | |
| 622 fProjectionAnnotationModel.collapseAll(offset, length); | |
| 623 } | |
| 624 } | |
| 625 | |
| 626 /** | |
| 627 * Adds the given master range to the given projection document. While the | |
| 628 * modification is processed, the viewer no longer handles projection | |
| 629 * changes, as it is causing them. | |
| 630 * | |
| 631 * @param projection the projection document | |
| 632 * @param offset the offset in the master document | |
| 633 * @param length the length in the master document | |
| 634 * @throws BadLocationException in case the specified range is invalid | |
| 635 * | |
| 636 * @see ProjectionDocument#addMasterDocumentRange(int, int) | |
| 637 */ | |
|
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638 private void addMasterDocumentRange(ProjectionDocument projection, int offset, int length) { |
| 129 | 639 |
| 640 if (fCommandQueue !is null) { | |
| 641 fCommandQueue.add(new ProjectionCommand(projection, ProjectionCommand.ADD, offset, length)); | |
| 642 } else { | |
| 643 try { | |
| 644 fHandleProjectionChanges= false; | |
| 645 // https://bugs.eclipse.org/bugs/show_bug.cgi?id=108258 | |
| 646 // make sure the document range is strictly line based | |
| 647 int end= offset + length; | |
| 648 offset= toLineStart(projection.getMasterDocument(), offset, false); | |
| 649 length= toLineStart(projection.getMasterDocument(), end, true) - offset; | |
| 650 projection.addMasterDocumentRange(offset, length); | |
| 651 } finally { | |
| 652 fHandleProjectionChanges= true; | |
| 653 } | |
| 654 } | |
| 655 } | |
| 656 | |
| 657 /** | |
| 658 * Removes the given master range from the given projection document. While the | |
| 659 * modification is processed, the viewer no longer handles projection | |
| 660 * changes, as it is causing them. | |
| 661 * | |
| 662 * @param projection the projection document | |
| 663 * @param offset the offset in the master document | |
| 664 * @param length the length in the master document | |
| 665 * @throws BadLocationException in case the specified range is invalid | |
| 666 * | |
| 667 * @see ProjectionDocument#removeMasterDocumentRange(int, int) | |
| 668 */ | |
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669 private void removeMasterDocumentRange(ProjectionDocument projection, int offset, int length) { |
| 129 | 670 if (fCommandQueue !is null) { |
| 671 fCommandQueue.add(new ProjectionCommand(projection, ProjectionCommand.REMOVE, offset, length)); | |
| 672 } else { | |
| 673 try { | |
| 674 fHandleProjectionChanges= false; | |
| 675 // https://bugs.eclipse.org/bugs/show_bug.cgi?id=108258 | |
| 676 // make sure the document range is strictly line based | |
| 677 int end= offset + length; | |
| 678 offset= toLineStart(projection.getMasterDocument(), offset, false); | |
| 679 length= toLineStart(projection.getMasterDocument(), end, true) - offset; | |
| 680 projection.removeMasterDocumentRange(offset, length); | |
| 681 } finally { | |
| 682 fHandleProjectionChanges= true; | |
| 683 } | |
| 684 } | |
| 685 } | |
| 145 | 686 |
| 129 | 687 /** |
| 688 * Returns the first line offset <= <code>offset</code>. If <code>testLastLine</code> | |
| 689 * is <code>true</code> and the offset is on last line then <code>offset</code> is returned. | |
| 145 | 690 * |
| 129 | 691 * @param document the document |
| 692 * @param offset the master document offset | |
| 693 * @param testLastLine <code>true</code> if the test for the last line should be performed | |
| 694 * @return the closest line offset >= <code>offset</code> | |
| 695 * @throws BadLocationException if the offset is invalid | |
| 696 * @since 3.2 | |
| 697 */ | |
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698 private int toLineStart(IDocument document, int offset, bool testLastLine) { |
| 129 | 699 if (document is null) |
| 700 return offset; | |
| 145 | 701 |
| 129 | 702 if (testLastLine && offset >= document.getLineInformationOfOffset(document.getLength() - 1).getOffset()) |
| 703 return offset; | |
| 145 | 704 |
| 129 | 705 return document.getLineInformationOfOffset(offset).getOffset(); |
| 706 } | |
| 707 | |
| 708 /* | |
| 709 * @see dwtx.jface.text.TextViewer#setVisibleRegion(int, int) | |
| 710 */ | |
| 711 public void setVisibleRegion(int start, int length) { | |
| 712 fWasProjectionEnabled= isProjectionMode(); | |
| 713 disableProjection(); | |
| 714 super.setVisibleRegion(start, length); | |
| 715 } | |
| 716 | |
| 717 /* | |
| 718 * @see dwtx.jface.text.TextViewer#setVisibleDocument(dwtx.jface.text.IDocument) | |
| 719 */ | |
| 720 protected void setVisibleDocument(IDocument document) { | |
| 721 if (!isProjectionMode()) { | |
| 722 super.setVisibleDocument(document); | |
| 723 return; | |
| 724 } | |
| 725 | |
| 726 // In projection mode we don't want to throw away the find/replace document adapter | |
| 727 FindReplaceDocumentAdapter adapter= fFindReplaceDocumentAdapter; | |
| 728 super.setVisibleDocument(document); | |
| 729 fFindReplaceDocumentAdapter= adapter; | |
| 730 } | |
| 731 | |
| 732 /* | |
| 733 * @see dwtx.jface.text.TextViewer#resetVisibleRegion() | |
| 734 */ | |
| 735 public void resetVisibleRegion() { | |
| 736 super.resetVisibleRegion(); | |
| 737 if (fWasProjectionEnabled) | |
| 738 enableProjection(); | |
| 739 } | |
| 740 | |
| 741 /* | |
| 742 * @see dwtx.jface.text.ITextViewer#getVisibleRegion() | |
| 743 */ | |
| 744 public IRegion getVisibleRegion() { | |
| 745 disableProjection(); | |
| 746 IRegion visibleRegion= getModelCoverage(); | |
| 747 if (visibleRegion is null) | |
| 748 visibleRegion= new Region(0, 0); | |
| 749 | |
| 750 return visibleRegion; | |
| 751 } | |
| 752 | |
| 753 /* | |
| 754 * @see dwtx.jface.text.ITextViewer#overlapsWithVisibleRegion(int,int) | |
| 755 */ | |
| 756 public bool overlapsWithVisibleRegion(int offset, int length) { | |
| 757 disableProjection(); | |
| 758 IRegion coverage= getModelCoverage(); | |
| 759 if (coverage is null) | |
| 760 return false; | |
| 761 | |
| 762 bool appending= (offset is coverage.getOffset() + coverage.getLength()) && length is 0; | |
| 763 return appending || TextUtilities.overlaps(coverage, new Region(offset, length)); | |
| 764 } | |
| 765 | |
| 766 /** | |
| 767 * Replace the visible document with the given document. Maintains the | |
| 768 * scroll offset and the selection. | |
| 769 * | |
| 770 * @param slave the visible document | |
| 771 */ | |
| 772 private void replaceVisibleDocument(IDocument slave) { | |
| 773 if (fReplaceVisibleDocumentExecutionTrigger !is null) { | |
| 774 ReplaceVisibleDocumentExecutor executor= new ReplaceVisibleDocumentExecutor(slave); | |
| 775 executor.install(fReplaceVisibleDocumentExecutionTrigger); | |
| 776 } else | |
| 777 executeReplaceVisibleDocument(slave); | |
| 778 } | |
| 779 | |
| 780 | |
| 781 private void executeReplaceVisibleDocument(IDocument visibleDocument) { | |
| 782 StyledText textWidget= getTextWidget(); | |
| 783 try { | |
| 784 if (textWidget !is null && !textWidget.isDisposed()) | |
| 785 textWidget.setRedraw(false); | |
| 786 | |
| 787 int topIndex= getTopIndex(); | |
| 788 Point selection= getSelectedRange(); | |
| 789 setVisibleDocument(visibleDocument); | |
| 790 Point currentSelection= getSelectedRange(); | |
| 791 if (currentSelection.x !is selection.x || currentSelection.y !is selection.y) | |
| 792 setSelectedRange(selection.x, selection.y); | |
| 793 setTopIndex(topIndex); | |
| 794 | |
| 795 } finally { | |
| 796 if (textWidget !is null && !textWidget.isDisposed()) | |
| 797 textWidget.setRedraw(true); | |
| 798 } | |
| 799 } | |
| 800 | |
| 801 /** | |
| 802 * Hides the given range by collapsing it. If requested, a redraw request is issued. | |
| 803 * | |
| 804 * @param offset the offset of the range to hide | |
| 805 * @param length the length of the range to hide | |
| 806 * @param fireRedraw <code>true</code> if a redraw request should be issued, <code>false</code> otherwise | |
| 807 * @throws BadLocationException in case the range is invalid | |
| 808 */ | |
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809 private void collapse(int offset, int length, bool fireRedraw) { |
| 129 | 810 ProjectionDocument projection= null; |
| 811 | |
| 812 IDocument visibleDocument= getVisibleDocument(); | |
| 138 | 813 if ( cast(ProjectionDocument)visibleDocument ) |
| 134 | 814 projection= cast(ProjectionDocument) visibleDocument; |
| 129 | 815 else { |
| 816 IDocument master= getDocument(); | |
| 817 IDocument slave= createSlaveDocument(getDocument()); | |
| 138 | 818 if ( cast(ProjectionDocument)slave ) { |
| 134 | 819 projection= cast(ProjectionDocument) slave; |
| 129 | 820 addMasterDocumentRange(projection, 0, master.getLength()); |
| 821 replaceVisibleDocument(projection); | |
| 822 } | |
| 823 } | |
| 824 | |
| 825 if (projection !is null) | |
| 826 removeMasterDocumentRange(projection, offset, length); | |
| 827 | |
| 828 if (projection !is null && fireRedraw) { | |
| 829 // repaint line above to get the folding box | |
| 830 IDocument document= getDocument(); | |
| 831 int line= document.getLineOfOffset(offset); | |
| 832 if (line > 0) { | |
| 833 IRegion info= document.getLineInformation(line - 1); | |
| 834 internalInvalidateTextPresentation(info.getOffset(), info.getLength()); | |
| 835 } | |
| 836 } | |
| 837 } | |
| 838 | |
| 839 /** | |
| 840 * Makes the given range visible again while not changing the folding state of any contained | |
| 841 * ranges. If requested, a redraw request is issued. | |
| 145 | 842 * |
| 129 | 843 * @param offset the offset of the range to be expanded |
| 844 * @param length the length of the range to be expanded | |
| 845 * @param fireRedraw <code>true</code> if a redraw request should be issued, | |
| 846 * <code>false</code> otherwise | |
| 847 * @throws BadLocationException in case the range is invalid | |
| 848 */ | |
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849 private void expand(int offset, int length, bool fireRedraw) { |
| 129 | 850 IDocument slave= getVisibleDocument(); |
| 138 | 851 if ( cast(ProjectionDocument)slave ) { |
| 134 | 852 ProjectionDocument projection= cast(ProjectionDocument) slave; |
| 129 | 853 |
| 854 // expand | |
| 855 addMasterDocumentRange(projection, offset, length); | |
| 856 | |
| 857 // collapse contained regions | |
| 858 ProjectionAnnotation[] collapsed= computeCollapsedNestedAnnotations(offset, length); | |
| 859 if (collapsed !is null) { | |
| 860 for (int i= 0; i < collapsed.length; i++) { | |
| 861 IRegion[] regions= computeCollapsedRegions(fProjectionAnnotationModel.getPosition(collapsed[i])); | |
| 862 if (regions !is null) | |
| 863 for (int j= 0; j < regions.length; j++) | |
| 864 removeMasterDocumentRange(projection, regions[j].getOffset(), regions[j].getLength()); | |
| 865 } | |
| 866 } | |
| 867 | |
| 868 // redraw if requested | |
| 869 if (fireRedraw) | |
| 870 internalInvalidateTextPresentation(offset, length); | |
| 871 } | |
| 872 } | |
| 873 | |
| 874 /** | |
| 875 * Processes the request for catch up with the annotation model in the UI thread. If the current | |
| 876 * thread is not the UI thread or there are pending catch up requests, a new request is posted. | |
| 877 * | |
| 878 * @param event the annotation model event | |
| 879 */ | |
| 880 protected final void processCatchupRequest(AnnotationModelEvent event) { | |
| 881 if (Display.getCurrent() !is null) { | |
| 882 bool run= false; | |
| 883 synchronized (fLock) { | |
| 884 run= fPendingRequests.isEmpty(); | |
| 885 } | |
| 886 if (run) { | |
| 887 | |
| 888 try { | |
| 889 catchupWithProjectionAnnotationModel(event); | |
| 890 } catch (BadLocationException x) { | |
| 891 throw new IllegalArgumentException(); | |
| 892 } | |
| 893 | |
| 894 } else | |
| 895 postCatchupRequest(event); | |
| 896 } else { | |
| 897 postCatchupRequest(event); | |
| 898 } | |
| 899 } | |
| 900 | |
| 901 /** | |
| 902 * Posts the request for catch up with the annotation model into the UI thread. | |
| 903 * | |
| 904 * @param event the annotation model event | |
| 905 */ | |
| 158 | 906 protected final void postCatchupRequest(AnnotationModelEvent event) { |
| 129 | 907 synchronized (fLock) { |
| 908 fPendingRequests.add(event); | |
| 909 if (fPendingRequests.size() is 1) { | |
| 910 StyledText widget= getTextWidget(); | |
| 911 if (widget !is null) { | |
| 912 Display display= widget.getDisplay(); | |
| 913 if (display !is null) { | |
| 135 | 914 display.asyncExec(new class() Runnable { |
| 129 | 915 public void run() { |
| 916 try { | |
| 917 while (true) { | |
| 918 AnnotationModelEvent ame= null; | |
| 919 synchronized (fLock) { | |
| 920 if (fPendingRequests.size() is 0) | |
| 921 return; | |
| 134 | 922 ame= cast(AnnotationModelEvent) fPendingRequests.remove(0); |
| 129 | 923 } |
| 924 catchupWithProjectionAnnotationModel(ame); | |
| 925 } | |
| 926 } catch (BadLocationException x) { | |
| 927 try { | |
| 928 catchupWithProjectionAnnotationModel(null); | |
| 929 } catch (BadLocationException x1) { | |
| 930 throw new IllegalArgumentException(); | |
| 931 } finally { | |
| 932 synchronized (fLock) { | |
| 933 fPendingRequests.clear(); | |
| 934 } | |
| 935 } | |
| 936 } | |
| 937 } | |
| 938 }); | |
| 939 } | |
| 940 } | |
| 941 } | |
| 942 } | |
| 943 } | |
| 145 | 944 |
| 129 | 945 /** |
| 946 * Tests whether the visible document's master document | |
| 947 * is identical to this viewer's document. | |
| 145 | 948 * |
| 129 | 949 * @return <code>true</code> if the visible document's master is |
| 950 * identical to this viewer's document | |
| 951 * @since 3.1 | |
| 952 */ | |
| 953 private bool isVisibleMasterDocumentSameAsDocument() { | |
| 954 IDocument visibleDocument= getVisibleDocument(); | |
| 138 | 955 return ( cast(ProjectionDocument)visibleDocument ) && (cast(ProjectionDocument)visibleDocument).getMasterDocument() is getDocument(); |
| 129 | 956 } |
| 957 | |
| 958 /** | |
| 959 * Adapts the slave visual document of this viewer to the changes described | |
| 960 * in the annotation model event. When the event is <code>null</code>, | |
| 961 * this is identical to a world change event. | |
| 962 * | |
| 963 * @param event the annotation model event or <code>null</code> | |
| 964 * @exception BadLocationException in case the annotation model event is no longer in synchronization with the document | |
| 965 */ | |
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966 private void catchupWithProjectionAnnotationModel(AnnotationModelEvent event) { |
| 145 | 967 |
| 129 | 968 if (event is null || !isVisibleMasterDocumentSameAsDocument()) { |
| 969 | |
| 970 fPendingAnnotationWorldChange= false; | |
| 971 reinitializeProjection(); | |
| 972 | |
| 973 } else if (event.isWorldChange()) { | |
| 974 | |
| 975 if (event.isValid()) { | |
| 976 fPendingAnnotationWorldChange= false; | |
| 977 reinitializeProjection(); | |
| 978 } else | |
| 979 fPendingAnnotationWorldChange= true; | |
| 980 | |
| 981 } else if (fPendingAnnotationWorldChange) { | |
| 982 if (event.isValid()) { | |
| 983 fPendingAnnotationWorldChange= false; | |
| 984 reinitializeProjection(); | |
| 985 } | |
| 986 } else { | |
| 145 | 987 |
| 129 | 988 Annotation[] addedAnnotations= event.getAddedAnnotations(); |
| 989 Annotation[] changedAnnotation= event.getChangedAnnotations(); | |
| 990 Annotation[] removedAnnotations= event.getRemovedAnnotations(); | |
| 145 | 991 |
| 129 | 992 fCommandQueue= new ProjectionCommandQueue(); |
| 145 | 993 |
| 129 | 994 bool isRedrawing= redraws(); |
| 995 int topIndex= isRedrawing ? getTopIndex() : -1; | |
| 145 | 996 |
| 129 | 997 processDeletions(event, removedAnnotations, true); |
| 998 List coverage= new ArrayList(); | |
| 999 processChanges(addedAnnotations, true, coverage); | |
| 1000 processChanges(changedAnnotation, true, coverage); | |
| 145 | 1001 |
| 129 | 1002 ProjectionCommandQueue commandQueue= fCommandQueue; |
| 1003 fCommandQueue= null; | |
| 145 | 1004 |
| 129 | 1005 if (commandQueue.passedRedrawCostsThreshold()) { |
| 1006 setRedraw(false); | |
| 1007 try { | |
| 1008 executeProjectionCommands(commandQueue, false); | |
| 1009 } catch (IllegalArgumentException x) { | |
| 1010 reinitializeProjection(); | |
| 1011 } finally { | |
| 1012 setRedraw(true, topIndex); | |
| 1013 } | |
| 1014 } else { | |
| 1015 try { | |
| 1016 bool fireRedraw= !commandQueue.passedInvalidationCostsThreshold(); | |
| 1017 executeProjectionCommands(commandQueue, fireRedraw); | |
| 1018 if (!fireRedraw) | |
| 1019 invalidateTextPresentation(); | |
| 1020 } catch (IllegalArgumentException x) { | |
| 1021 reinitializeProjection(); | |
| 1022 } | |
| 1023 } | |
| 1024 } | |
| 1025 } | |
| 1026 | |
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1027 private void executeProjectionCommands(ProjectionCommandQueue commandQueue, bool fireRedraw) { |
| 129 | 1028 |
| 1029 ProjectionCommand command; | |
| 1030 Iterator e= commandQueue.iterator(); | |
| 1031 while (e.hasNext()) { | |
| 134 | 1032 command= cast(ProjectionCommand) e.next(); |
| 129 | 1033 switch (command.fType) { |
| 1034 case ProjectionCommand.ADD: | |
| 1035 addMasterDocumentRange(command.fProjection, command.fOffset, command.fLength); | |
| 1036 break; | |
| 1037 case ProjectionCommand.REMOVE: | |
| 1038 removeMasterDocumentRange(command.fProjection, command.fOffset, command.fLength); | |
| 1039 break; | |
| 1040 case ProjectionCommand.INVALIDATE_PRESENTATION: | |
| 1041 if (fireRedraw) | |
| 1042 invalidateTextPresentation(command.fOffset, command.fLength); | |
| 1043 break; | |
| 1044 } | |
| 1045 } | |
| 1046 | |
| 1047 commandQueue.clear(); | |
| 1048 } | |
| 1049 | |
| 1050 private bool covers(int offset, int length, Position position) { | |
| 1051 if (!(position.offset is offset && position.length is length) && !position.isDeleted()) | |
| 1052 return offset <= position.getOffset() && position.getOffset() + position.getLength() <= offset + length; | |
| 1053 return false; | |
| 1054 } | |
| 1055 | |
| 1056 private ProjectionAnnotation[] computeCollapsedNestedAnnotations(int offset, int length) { | |
| 1057 List annotations= new ArrayList(5); | |
| 1058 Iterator e= fProjectionAnnotationModel.getAnnotationIterator(); | |
| 1059 while (e.hasNext()) { | |
| 134 | 1060 ProjectionAnnotation annotation= cast(ProjectionAnnotation) e.next(); |
| 129 | 1061 if (annotation.isCollapsed()) { |
| 1062 Position position= fProjectionAnnotationModel.getPosition(annotation); | |
| 1063 if (position is null) { | |
| 1064 // annotation might already be deleted, we will be informed later on about this deletion | |
| 1065 continue; | |
| 1066 } | |
| 1067 if (covers(offset, length, position)) | |
| 1068 annotations.add(annotation); | |
| 1069 } | |
| 1070 } | |
| 1071 | |
| 1072 if (annotations.size() > 0) { | |
| 1073 ProjectionAnnotation[] result= new ProjectionAnnotation[annotations.size()]; | |
| 1074 annotations.toArray(result); | |
| 1075 return result; | |
| 1076 } | |
| 1077 | |
| 1078 return null; | |
| 1079 } | |
| 1080 | |
| 1081 private void internalInvalidateTextPresentation(int offset, int length) { | |
| 1082 if (fCommandQueue !is null) { | |
| 1083 fCommandQueue.add(new ProjectionCommand(offset, length)); | |
| 1084 } else { | |
| 1085 invalidateTextPresentation(offset, length); | |
| 1086 } | |
| 1087 } | |
| 1088 | |
| 1089 /* | |
| 1090 * We pass the removed annotation into this method for performance reasons only. Otherwise, they could be fetch from the event. | |
| 1091 */ | |
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1092 private void processDeletions(AnnotationModelEvent event, Annotation[] removedAnnotations, bool fireRedraw) { |
| 129 | 1093 for (int i= 0; i < removedAnnotations.length; i++) { |
| 134 | 1094 ProjectionAnnotation annotation= cast(ProjectionAnnotation) removedAnnotations[i]; |
| 129 | 1095 if (annotation.isCollapsed()) { |
| 1096 Position expanded= event.getPositionOfRemovedAnnotation(annotation); | |
| 1097 expand(expanded.getOffset(), expanded.getLength(), fireRedraw); | |
| 1098 } | |
| 1099 } | |
| 1100 } | |
| 1101 | |
| 1102 /** | |
| 1103 * Computes the region that must be collapsed when the given position is the | |
| 1104 * position of an expanded projection annotation. | |
| 1105 * | |
| 1106 * @param position the position | |
| 1107 * @return the range that must be collapsed | |
| 1108 */ | |
| 1109 public IRegion computeCollapsedRegion(Position position) { | |
| 1110 try { | |
| 1111 IDocument document= getDocument(); | |
| 1112 if (document is null) | |
| 1113 return null; | |
| 145 | 1114 |
| 129 | 1115 int line= document.getLineOfOffset(position.getOffset()); |
| 1116 int offset= document.getLineOffset(line + 1); | |
| 1117 | |
| 1118 int length= position.getLength() - (offset - position.getOffset()); | |
| 1119 if (length > 0) | |
| 1120 return new Region(offset, length); | |
| 1121 } catch (BadLocationException x) { | |
| 1122 } | |
| 1123 | |
| 1124 return null; | |
| 1125 } | |
| 1126 | |
| 1127 /** | |
| 1128 * Computes the regions that must be collapsed when the given position is | |
| 1129 * the position of an expanded projection annotation. | |
| 1130 * | |
| 1131 * @param position the position | |
| 1132 * @return the ranges that must be collapsed, or <code>null</code> if | |
| 1133 * there are none | |
| 1134 * @since 3.1 | |
| 1135 */ | |
| 1136 IRegion[] computeCollapsedRegions(Position position) { | |
| 1137 try { | |
| 1138 IDocument document= getDocument(); | |
| 1139 if (document is null) | |
| 1140 return null; | |
| 1141 | |
| 138 | 1142 if ( cast(IProjectionPosition)position ) { |
| 134 | 1143 IProjectionPosition projPosition= cast(IProjectionPosition) position; |
| 129 | 1144 return projPosition.computeProjectionRegions(document); |
| 1145 } | |
| 1146 | |
| 1147 int line= document.getLineOfOffset(position.getOffset()); | |
| 1148 int offset= document.getLineOffset(line + 1); | |
| 1149 | |
| 1150 int length= position.getLength() - (offset - position.getOffset()); | |
| 1151 if (length > 0) | |
| 145 | 1152 return [new Region(offset, length)]; |
| 129 | 1153 |
| 1154 return null; | |
| 1155 } catch (BadLocationException x) { | |
| 1156 return null; | |
| 1157 } | |
| 1158 } | |
| 1159 | |
| 1160 /** | |
| 1161 * Computes the collapsed region anchor for the given position. Assuming | |
| 1162 * that the position is the position of an expanded projection annotation, | |
| 1163 * the anchor is the region that is still visible after the projection | |
| 1164 * annotation has been collapsed. | |
| 1165 * | |
| 1166 * @param position the position | |
| 1167 * @return the collapsed region anchor | |
| 1168 */ | |
| 1169 public Position computeCollapsedRegionAnchor(Position position) { | |
| 1170 try { | |
| 1171 IDocument document= getDocument(); | |
| 1172 if (document is null) | |
| 1173 return null; | |
| 1174 | |
| 1175 int captionOffset= position.getOffset(); | |
| 138 | 1176 if ( cast(IProjectionPosition)position ) |
| 134 | 1177 captionOffset+= (cast(IProjectionPosition) position).computeCaptionOffset(document); |
| 129 | 1178 |
| 1179 IRegion lineInfo= document.getLineInformationOfOffset(captionOffset); | |
| 1180 return new Position(lineInfo.getOffset() + lineInfo.getLength(), 0); | |
| 1181 } catch (BadLocationException x) { | |
| 1182 } | |
| 1183 return null; | |
| 1184 } | |
| 1185 | |
|
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1186 private void processChanges(Annotation[] annotations, bool fireRedraw, List coverage) { |
| 129 | 1187 for (int i= 0; i < annotations.length; i++) { |
| 134 | 1188 ProjectionAnnotation annotation= cast(ProjectionAnnotation) annotations[i]; |
| 129 | 1189 Position position= fProjectionAnnotationModel.getPosition(annotation); |
| 1190 | |
| 1191 if (position is null) | |
| 1192 continue; | |
| 1193 | |
| 1194 if (!covers(coverage, position)) { | |
| 1195 if (annotation.isCollapsed()) { | |
| 1196 coverage.add(position); | |
| 1197 IRegion[] regions= computeCollapsedRegions(position); | |
| 1198 if (regions !is null) | |
| 1199 for (int j= 0; j < regions.length; j++) | |
| 1200 collapse(regions[j].getOffset(), regions[j].getLength(), fireRedraw); | |
| 1201 } else { | |
| 1202 expand(position.getOffset(), position.getLength(), fireRedraw); | |
| 1203 } | |
| 1204 } | |
| 1205 } | |
| 1206 } | |
| 1207 | |
| 1208 private bool covers(List coverage, Position position) { | |
| 1209 Iterator e= coverage.iterator(); | |
| 1210 while (e.hasNext()) { | |
| 134 | 1211 Position p= cast(Position) e.next(); |
| 129 | 1212 if (p.getOffset() <= position.getOffset() && position.getOffset() + position.getLength() <= p.getOffset() + p.getLength()) |
| 1213 return true; | |
| 1214 } | |
| 1215 return false; | |
| 1216 } | |
| 1217 | |
| 1218 /** | |
| 1219 * Forces this viewer to throw away any old state and to initialize its content | |
| 1220 * from its projection annotation model. | |
| 1221 * | |
| 1222 * @throws BadLocationException in case something goes wrong during initialization | |
| 1223 */ | |
|
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|
1224 public final void reinitializeProjection() { |
| 129 | 1225 |
| 1226 ProjectionDocument projection= null; | |
| 1227 | |
| 1228 ISlaveDocumentManager manager= getSlaveDocumentManager(); | |
| 1229 if (manager !is null) { | |
| 1230 IDocument master= getDocument(); | |
| 1231 if (master !is null) { | |
| 1232 IDocument slave= manager.createSlaveDocument(master); | |
| 138 | 1233 if ( cast(ProjectionDocument)slave ) { |
| 134 | 1234 projection= cast(ProjectionDocument) slave; |
| 129 | 1235 addMasterDocumentRange(projection, 0, master.getLength()); |
| 1236 } | |
| 1237 } | |
| 1238 } | |
| 1239 | |
| 1240 if (projection !is null) { | |
| 1241 Iterator e= fProjectionAnnotationModel.getAnnotationIterator(); | |
| 1242 while (e.hasNext()) { | |
| 134 | 1243 ProjectionAnnotation annotation= cast(ProjectionAnnotation) e.next(); |
| 129 | 1244 if (annotation.isCollapsed()) { |
| 1245 Position position= fProjectionAnnotationModel.getPosition(annotation); | |
| 1246 if (position !is null) { | |
| 1247 IRegion[] regions= computeCollapsedRegions(position); | |
| 1248 if (regions !is null) | |
| 1249 for (int i= 0; i < regions.length; i++) | |
| 1250 removeMasterDocumentRange(projection, regions[i].getOffset(), regions[i].getLength()); | |
| 1251 } | |
| 1252 } | |
| 1253 } | |
| 1254 | |
| 1255 } | |
| 1256 | |
| 1257 replaceVisibleDocument(projection); | |
| 1258 } | |
| 1259 | |
| 1260 /* | |
| 1261 * @see dwtx.jface.text.TextViewer#handleVerifyEvent(dwt.events.VerifyEvent) | |
| 1262 */ | |
| 1263 protected void handleVerifyEvent(VerifyEvent e) { | |
| 1264 IRegion modelRange= event2ModelRange(e); | |
| 1265 if (exposeModelRange(modelRange)) | |
| 1266 e.doit= false; | |
| 1267 else | |
| 1268 super.handleVerifyEvent(e); | |
| 1269 } | |
| 1270 | |
| 1271 /** | |
| 1272 * Adds the give column as last column to this viewer's vertical ruler. | |
| 1273 * | |
| 1274 * @param column the column to be added | |
| 1275 */ | |
| 1276 public void addVerticalRulerColumn(IVerticalRulerColumn column) { | |
| 1277 IVerticalRuler ruler= getVerticalRuler(); | |
| 138 | 1278 if ( cast(CompositeRuler)ruler ) { |
| 134 | 1279 CompositeRuler compositeRuler= cast(CompositeRuler) ruler; |
| 129 | 1280 compositeRuler.addDecorator(99, column); |
| 1281 } | |
| 1282 } | |
| 1283 | |
| 1284 /** | |
| 1285 * Removes the give column from this viewer's vertical ruler. | |
| 1286 * | |
| 1287 * @param column the column to be removed | |
| 1288 */ | |
| 1289 public void removeVerticalRulerColumn(IVerticalRulerColumn column) { | |
| 1290 IVerticalRuler ruler= getVerticalRuler(); | |
| 138 | 1291 if ( cast(CompositeRuler)ruler ) { |
| 134 | 1292 CompositeRuler compositeRuler= cast(CompositeRuler) ruler; |
| 129 | 1293 compositeRuler.removeDecorator(column); |
| 1294 } | |
| 1295 } | |
| 1296 | |
| 1297 /* | |
| 1298 * @see dwtx.jface.text.ITextViewerExtension5#exposeModelRange(dwtx.jface.text.IRegion) | |
| 1299 */ | |
| 1300 public bool exposeModelRange(IRegion modelRange) { | |
| 1301 if (isProjectionMode()) | |
| 1302 return fProjectionAnnotationModel.expandAll(modelRange.getOffset(), modelRange.getLength()); | |
| 1303 | |
| 1304 if (!overlapsWithVisibleRegion(modelRange.getOffset(), modelRange.getLength())) { | |
| 1305 resetVisibleRegion(); | |
| 1306 return true; | |
| 1307 } | |
| 1308 | |
| 1309 return false; | |
| 1310 } | |
| 1311 | |
| 1312 /* | |
| 1313 * @see dwtx.jface.text.source.SourceViewer#setRangeIndication(int, int, bool) | |
| 1314 */ | |
| 1315 public void setRangeIndication(int offset, int length, bool moveCursor) { | |
| 1316 IRegion rangeIndication= getRangeIndication(); | |
| 1317 if (moveCursor && fProjectionAnnotationModel !is null && (rangeIndication is null || offset !is rangeIndication.getOffset() || length !is rangeIndication.getLength())) { | |
| 1318 List expand= new ArrayList(2); | |
| 1319 // expand the immediate effected collapsed regions | |
| 1320 Iterator iterator= fProjectionAnnotationModel.getAnnotationIterator(); | |
| 1321 while (iterator.hasNext()) { | |
| 134 | 1322 ProjectionAnnotation annotation= cast(ProjectionAnnotation)iterator.next(); |
| 129 | 1323 if (annotation.isCollapsed() && willAutoExpand(fProjectionAnnotationModel.getPosition(annotation), offset, length)) |
| 1324 expand.add(annotation); | |
| 1325 } | |
| 1326 | |
| 1327 if (!expand.isEmpty()) { | |
| 1328 Iterator e= expand.iterator(); | |
| 1329 while (e.hasNext()) | |
| 134 | 1330 fProjectionAnnotationModel.expand(cast(Annotation)e.next()); |
| 129 | 1331 } |
| 1332 } | |
| 1333 super.setRangeIndication(offset, length, moveCursor); | |
| 1334 } | |
| 1335 | |
| 1336 private bool willAutoExpand(Position position, int offset, int length) { | |
| 1337 if (position is null || position.isDeleted()) | |
| 1338 return false; | |
| 1339 // right or left boundary | |
| 1340 if (position.getOffset() is offset || position.getOffset() + position.getLength() is offset + length) | |
| 1341 return true; | |
| 1342 // completely embedded in given position | |
| 1343 if (position.getOffset() < offset && offset + length < position.getOffset() + position.getLength()) | |
| 1344 return true; | |
| 1345 return false; | |
| 1346 } | |
| 1347 | |
| 1348 /* | |
| 1349 * @see dwtx.jface.text.source.SourceViewer#handleDispose() | |
| 1350 * @since 3.0 | |
| 1351 */ | |
| 1352 protected void handleDispose() { | |
| 1353 fWasProjectionEnabled= false; | |
| 1354 super.handleDispose(); | |
| 1355 } | |
| 1356 | |
| 1357 /* | |
| 1358 * @see dwtx.jface.text.TextViewer#handleVisibleDocumentAboutToBeChanged(dwtx.jface.text.DocumentEvent) | |
| 1359 */ | |
| 1360 protected void handleVisibleDocumentChanged(DocumentEvent event) { | |
| 143 | 1361 if (fHandleProjectionChanges && cast(ProjectionDocumentEvent)event && isProjectionMode()) { |
| 134 | 1362 ProjectionDocumentEvent e= cast(ProjectionDocumentEvent) event; |
| 129 | 1363 |
| 1364 DocumentEvent master= e.getMasterEvent(); | |
| 1365 if (master !is null) | |
| 1366 fReplaceVisibleDocumentExecutionTrigger= master.getDocument(); | |
| 1367 | |
| 1368 try { | |
| 1369 | |
| 1370 int replaceLength= e.getText() is null ? 0 : e.getText().length(); | |
| 1371 if (ProjectionDocumentEvent.PROJECTION_CHANGE is e.getChangeType()) { | |
| 1372 if (e.getLength() is 0 && replaceLength !is 0) | |
| 1373 fProjectionAnnotationModel.expandAll(e.getMasterOffset(), e.getMasterLength()); | |
| 1374 } else if (master !is null && (replaceLength > 0 || fDeletedLines > 1)) { | |
| 1375 try { | |
| 1376 int numberOfLines= e.getDocument().getNumberOfLines(e.getOffset(), replaceLength); | |
| 1377 if (numberOfLines > 1 || fDeletedLines > 1) | |
| 1378 fProjectionAnnotationModel.expandAll(master.getOffset(), master.getLength()); | |
| 1379 } catch (BadLocationException x) { | |
| 1380 } | |
| 1381 } | |
| 1382 | |
| 1383 } finally { | |
| 1384 fReplaceVisibleDocumentExecutionTrigger= null; | |
| 1385 } | |
| 1386 | |
| 1387 } | |
| 1388 } | |
| 1389 | |
| 1390 /* | |
| 1391 * @see dwtx.jface.text.TextViewer#handleVisibleDocumentAboutToBeChanged(dwtx.jface.text.DocumentEvent) | |
| 1392 * @since 3.1 | |
| 1393 */ | |
| 1394 protected void handleVisibleDocumentAboutToBeChanged(DocumentEvent event) { | |
| 143 | 1395 if (fHandleProjectionChanges && cast(ProjectionDocumentEvent)event && isProjectionMode()) { |
| 129 | 1396 int deletedLines; |
| 1397 try { | |
| 1398 deletedLines= event.getDocument().getNumberOfLines(event.getOffset(), event.getLength()); | |
| 1399 } catch (BadLocationException e1) { | |
| 1400 deletedLines= 0; | |
| 1401 } | |
| 1402 fDeletedLines= deletedLines; | |
| 1403 } | |
| 1404 } | |
| 1405 | |
| 1406 /* | |
| 1407 * @see dwtx.jface.text.ITextViewerExtension5#getCoveredModelRanges(dwtx.jface.text.IRegion) | |
| 1408 */ | |
| 1409 public IRegion[] getCoveredModelRanges(IRegion modelRange) { | |
| 1410 if (fInformationMapping is null) | |
| 145 | 1411 return [ new Region(modelRange.getOffset(), modelRange.getLength()) ]; |
| 129 | 1412 |
| 138 | 1413 if ( cast(IDocumentInformationMappingExtension)fInformationMapping ) { |
| 134 | 1414 IDocumentInformationMappingExtension extension= cast(IDocumentInformationMappingExtension) fInformationMapping; |
| 129 | 1415 try { |
| 1416 return extension.getExactCoverage(modelRange); | |
| 1417 } catch (BadLocationException x) { | |
| 1418 } | |
| 1419 } | |
| 1420 | |
| 1421 return null; | |
| 1422 } | |
| 1423 | |
| 1424 /* | |
| 1425 * @see dwtx.jface.text.ITextOperationTarget#doOperation(int) | |
| 1426 */ | |
| 1427 public void doOperation(int operation) { | |
| 1428 switch (operation) { | |
| 1429 case TOGGLE: | |
| 1430 if (canDoOperation(TOGGLE)) { | |
| 1431 if (!isProjectionMode()) { | |
| 1432 enableProjection(); | |
| 1433 } else { | |
| 1434 expandAll(); | |
| 1435 disableProjection(); | |
| 1436 } | |
| 1437 return; | |
| 1438 } | |
| 1439 } | |
| 1440 | |
| 1441 if (!isProjectionMode()) { | |
| 1442 super.doOperation(operation); | |
| 1443 return; | |
| 1444 } | |
| 1445 | |
| 1446 StyledText textWidget= getTextWidget(); | |
| 1447 if (textWidget is null) | |
| 1448 return; | |
| 1449 | |
| 1450 Point selection= null; | |
| 1451 switch (operation) { | |
| 1452 | |
| 1453 case CUT: | |
| 1454 | |
| 1455 if (redraws()) { | |
| 1456 selection= getSelectedRange(); | |
| 1457 if (exposeModelRange(new Region(selection.x, selection.y))) | |
| 1458 return; | |
| 145 | 1459 |
| 129 | 1460 if (selection.y is 0) |
| 1461 copyMarkedRegion(true); | |
| 1462 else | |
| 1463 copyToClipboard(selection.x, selection.y, true, textWidget); | |
| 1464 | |
| 1465 selection= textWidget.getSelectionRange(); | |
| 1466 fireSelectionChanged(selection.x, selection.y); | |
| 1467 } | |
| 1468 break; | |
| 1469 | |
| 1470 case COPY: | |
| 1471 | |
| 1472 if (redraws()) { | |
| 1473 selection= getSelectedRange(); | |
| 1474 if (selection.y is 0) | |
| 1475 copyMarkedRegion(false); | |
| 1476 else | |
| 1477 copyToClipboard(selection.x, selection.y, false, textWidget); | |
| 1478 } | |
| 1479 break; | |
| 1480 | |
| 1481 case DELETE: | |
| 1482 | |
| 1483 if (redraws()) { | |
| 1484 try { | |
| 1485 selection= getSelectedRange(); | |
| 1486 Point widgetSelection= textWidget.getSelectionRange(); | |
| 1487 if (selection.y is 0 || selection.y is widgetSelection.y) | |
| 1488 getTextWidget().invokeAction(ST.DELETE_NEXT); | |
| 1489 else | |
| 1490 deleteTextRange(selection.x, selection.y, textWidget); | |
| 1491 | |
| 1492 selection= textWidget.getSelectionRange(); | |
| 1493 fireSelectionChanged(selection.x, selection.y); | |
| 1494 | |
| 1495 } catch (BadLocationException x) { | |
| 1496 // ignore | |
| 1497 } | |
| 1498 } | |
| 1499 break; | |
| 1500 | |
| 1501 | |
| 1502 case EXPAND_ALL: | |
| 1503 if (redraws()) | |
| 1504 expandAll(); | |
| 1505 break; | |
| 1506 | |
| 1507 case EXPAND: | |
| 1508 if (redraws()) { | |
| 1509 expand(); | |
| 1510 } | |
| 1511 break; | |
| 1512 | |
| 1513 case COLLAPSE_ALL: | |
| 1514 if (redraws()) | |
| 1515 collapseAll(); | |
| 1516 break; | |
| 145 | 1517 |
| 129 | 1518 case COLLAPSE: |
| 1519 if (redraws()) { | |
| 1520 collapse(); | |
| 1521 } | |
| 1522 break; | |
| 1523 | |
| 1524 default: | |
| 1525 super.doOperation(operation); | |
| 1526 } | |
| 1527 } | |
| 1528 | |
| 1529 /* | |
| 1530 * @see dwtx.jface.text.source.SourceViewer#canDoOperation(int) | |
| 1531 */ | |
| 1532 public bool canDoOperation(int operation) { | |
| 1533 | |
| 1534 switch (operation) { | |
| 1535 case COLLAPSE: | |
| 1536 case COLLAPSE_ALL: | |
| 1537 case EXPAND: | |
| 1538 case EXPAND_ALL: | |
| 1539 return isProjectionMode(); | |
| 1540 case TOGGLE: | |
| 1541 return isProjectionMode() || !isSegmented(); | |
| 1542 } | |
| 1543 | |
| 1544 return super.canDoOperation(operation); | |
| 1545 } | |
| 1546 | |
| 1547 private bool isSegmented() { | |
| 1548 IDocument document= getDocument(); | |
| 1549 int length= document is null ? 0 : document.getLength(); | |
| 1550 IRegion visible= getModelCoverage(); | |
| 1551 bool isSegmented= visible !is null && !visible.equals(new Region(0, length)); | |
| 1552 return isSegmented; | |
| 1553 } | |
| 1554 | |
| 1555 private IRegion getMarkedRegion() { | |
| 1556 if (getTextWidget() is null) | |
| 1557 return null; | |
| 1558 | |
| 1559 if (fMarkPosition is null || fMarkPosition.isDeleted()) | |
| 1560 return null; | |
| 1561 | |
| 1562 int start= fMarkPosition.getOffset(); | |
| 1563 int end= getSelectedRange().x; | |
| 1564 | |
| 1565 return start > end ? new Region (end, start - end) : new Region(start, end - start); | |
| 1566 } | |
| 1567 | |
| 1568 /* | |
| 1569 * @see dwtx.jface.text.TextViewer#copyMarkedRegion(bool) | |
| 1570 */ | |
| 145 | 1571 protected void copyMarkedRegion(bool delete_) { |
| 129 | 1572 IRegion markedRegion= getMarkedRegion(); |
| 1573 if (markedRegion !is null) | |
| 145 | 1574 copyToClipboard(markedRegion.getOffset(), markedRegion.getLength(), delete_, getTextWidget()); |
| 129 | 1575 } |
| 1576 | |
| 145 | 1577 private void copyToClipboard(int offset, int length, bool delete_, StyledText textWidget) { |
| 129 | 1578 |
| 1579 String copyText= null; | |
| 1580 | |
| 1581 try { | |
| 1582 IDocument document= getDocument(); | |
| 1583 copyText= document.get(offset, length); | |
| 1584 } catch (BadLocationException ex) { | |
| 1585 // XXX: should log here, but JFace Text has no Log | |
| 1586 // As a fallback solution let the widget handle this | |
| 1587 textWidget.copy(); | |
| 1588 } | |
| 1589 | |
| 1590 if (copyText !is null && copyText.equals(textWidget.getSelectionText())) { | |
| 1591 /* | |
| 1592 * XXX: Reduce pain of https://bugs.eclipse.org/bugs/show_bug.cgi?id=64498 | |
| 1593 * by letting the widget handle the copy operation in this special case. | |
| 1594 */ | |
| 1595 textWidget.copy(); | |
| 1596 } else if (copyText !is null) { | |
| 1597 | |
| 1598 Clipboard clipboard= new Clipboard(textWidget.getDisplay()); | |
| 1599 | |
| 1600 try { | |
| 145 | 1601 Transfer[] dataTypes= [ TextTransfer.getInstance() ]; |
| 1602 Object[] data= [ stringcast(copyText) ]; | |
| 129 | 1603 try { |
| 1604 clipboard.setContents(data, dataTypes); | |
| 1605 } catch (DWTError e) { | |
| 1606 if (e.code !is DND.ERROR_CANNOT_SET_CLIPBOARD) | |
| 1607 throw e; | |
| 1608 /* | |
| 1609 * TODO see https://bugs.eclipse.org/bugs/show_bug.cgi?id=59459 | |
| 1610 * we should either log and/or inform the user | |
| 1611 * silently fail for now. | |
| 1612 */ | |
| 1613 return; | |
| 1614 } | |
| 1615 | |
| 1616 } finally { | |
| 1617 clipboard.dispose(); | |
| 1618 } | |
| 1619 } | |
| 1620 | |
| 145 | 1621 if (delete_) { |
| 129 | 1622 try { |
| 1623 deleteTextRange(offset, length, textWidget); | |
| 1624 } catch (BadLocationException x) { | |
| 1625 // XXX: should log here, but JFace Text has no Log | |
| 1626 } | |
| 1627 } | |
| 1628 } | |
| 1629 | |
|
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diff
changeset
|
1630 private void deleteTextRange(int offset, int length, StyledText textWidget) { |
| 129 | 1631 getDocument().replace(offset, length, ""); //$NON-NLS-1$ |
| 1632 int widgetCaret= modelOffset2WidgetOffset(offset); | |
| 1633 if (widgetCaret > -1) | |
| 1634 textWidget.setSelection(widgetCaret); | |
| 1635 } | |
| 1636 | |
| 1637 /** | |
| 1638 * Adapts the behavior of the super class to respect line based folding. | |
| 1639 * | |
| 1640 * @param widgetSelection the widget selection | |
| 1641 * @return the model selection while respecting line based folding | |
| 1642 */ | |
| 1643 protected Point widgetSelection2ModelSelection(Point widgetSelection) { | |
| 1644 | |
| 1645 if (!isProjectionMode()) | |
| 1646 return super.widgetSelection2ModelSelection(widgetSelection); | |
| 1647 | |
| 1648 /* | |
| 1649 * There is one requirement that governs preservation of logical | |
| 1650 * positions: | |
| 1651 * | |
| 1652 * 1) a selection with widget_length is 0 should never expand to have | |
| 1653 * model_length > 0. | |
| 1654 * | |
| 1655 * There are a number of ambiguities to resolve with projection regions. | |
| 1656 * A projected region P has a widget-length of zero. Its widget offset | |
| 1657 * may interact with the selection S in various ways: | |
| 1658 * | |
| 1659 * A) P.widget_offset lies at the caret, S.widget_length is zero. | |
| 1660 * Requirement 1 applies. S is *behind* P (done so by widgetRange2ModelRange). | |
| 1661 * | |
| 1662 * B) P.widget_offset lies inside the widget selection. This case is | |
| 1663 * easy: P is included in S, which is automatically done so by | |
| 1664 * widgetRange2ModelRange. | |
| 1665 * | |
| 1666 * C) P.widget_offset lies at S.widget_end: This is | |
| 1667 * arguable - our policy is to include P if it belongs to a projection | |
| 1668 * annotation that overlaps with the widget selection. | |
| 1669 * | |
| 1670 * D) P.widget_offset lies at S.widget_offset: Arguable - our policy | |
| 1671 * is to include P if it belongs to a projection annotation that | |
| 1672 * overlaps with the widget selection | |
| 1673 */ | |
| 1674 IRegion modelSelection= widgetRange2ModelRange(new Region(widgetSelection.x, widgetSelection.y)); | |
| 1675 if (modelSelection is null) | |
| 1676 return null; | |
| 1677 | |
| 1678 int modelOffset= modelSelection.getOffset(); | |
| 1679 int modelEndOffset= modelOffset + modelSelection.getLength(); | |
| 1680 | |
| 1681 /* Case A: never expand a zero-length selection. S is *behind* P. */ | |
| 1682 if (widgetSelection.y is 0) | |
| 1683 return new Point(modelEndOffset, 0); | |
| 1684 | |
| 1685 int widgetSelectionExclusiveEnd= widgetSelection.x + widgetSelection.y; | |
| 1686 Position[] annotationPositions= computeOverlappingAnnotationPositions(modelSelection); | |
| 1687 for (int i= 0; i < annotationPositions.length; i++) { | |
| 1688 IRegion[] regions= computeCollapsedRegions(annotationPositions[i]); | |
| 1689 if (regions is null) | |
| 1690 continue; | |
| 1691 for (int j= 0; j < regions.length; j++) { | |
| 1692 IRegion modelRange= regions[j]; | |
| 1693 IRegion widgetRange= modelRange2ClosestWidgetRange(modelRange); | |
| 1694 // only take collapsed ranges, i.e. widget length is 0 | |
| 1695 if (widgetRange !is null && widgetRange.getLength() is 0) { | |
| 1696 int widgetOffset= widgetRange.getOffset(); | |
| 1697 // D) region is collapsed at S.widget_offset | |
| 1698 if (widgetOffset is widgetSelection.x) | |
| 1699 modelOffset= Math.min(modelOffset, modelRange.getOffset()); | |
| 1700 // C) region is collapsed at S.widget_end | |
| 1701 else if (widgetOffset is widgetSelectionExclusiveEnd) | |
| 1702 modelEndOffset= Math.max(modelEndOffset, modelRange.getOffset() + modelRange.getLength()); | |
| 1703 } | |
| 1704 } | |
| 1705 } | |
| 1706 return new Point(modelOffset, modelEndOffset - modelOffset); | |
| 1707 } | |
| 1708 | |
| 1709 /** | |
| 1710 * Returns the positions of all annotations that intersect with | |
| 1711 * <code>modelSelection</code> and that are at least partly visible. | |
| 1712 * @param modelSelection a model range | |
| 1713 * @return the positions of all annotations that intersect with | |
| 1714 * <code>modelSelection</code> | |
| 1715 * @since 3.1 | |
| 1716 */ | |
| 1717 private Position[] computeOverlappingAnnotationPositions(IRegion modelSelection) { | |
| 1718 List positions= new ArrayList(); | |
| 1719 for (Iterator e= fProjectionAnnotationModel.getAnnotationIterator(); e.hasNext();) { | |
| 134 | 1720 ProjectionAnnotation annotation= cast(ProjectionAnnotation) e.next(); |
| 129 | 1721 Position position= fProjectionAnnotationModel.getPosition(annotation); |
| 1722 if (position !is null && position.overlapsWith(modelSelection.getOffset(), modelSelection.getLength()) && modelRange2WidgetRange(position) !is null) | |
| 1723 positions.add(position); | |
| 1724 } | |
| 158 | 1725 return arraycast!(Position)( positions.toArray()); |
| 129 | 1726 } |
| 1727 | |
| 1728 /* | |
| 1729 * @see dwtx.jface.text.TextViewer#getFindReplaceDocumentAdapter() | |
| 1730 */ | |
| 1731 protected FindReplaceDocumentAdapter getFindReplaceDocumentAdapter() { | |
| 1732 if (fFindReplaceDocumentAdapter is null) { | |
| 1733 IDocument document= isProjectionMode() ? getDocument() : getVisibleDocument(); | |
| 1734 fFindReplaceDocumentAdapter= new FindReplaceDocumentAdapter(document); | |
| 1735 } | |
| 1736 return fFindReplaceDocumentAdapter; | |
| 1737 } | |
| 1738 | |
| 1739 /* | |
| 1740 * @see dwtx.jface.text.TextViewer#findAndSelect(int, java.lang.String, bool, bool, bool, bool) | |
| 1741 */ | |
| 1742 protected int findAndSelect(int startPosition, String findString, bool forwardSearch, bool caseSensitive, bool wholeWord, bool regExSearch) { | |
| 1743 | |
| 1744 if (!isProjectionMode()) | |
| 1745 return super.findAndSelect(startPosition, findString, forwardSearch, caseSensitive, wholeWord, regExSearch); | |
| 1746 | |
| 1747 StyledText textWidget= getTextWidget(); | |
| 1748 if (textWidget is null) | |
| 1749 return -1; | |
| 1750 | |
| 1751 try { | |
| 1752 | |
| 1753 IRegion matchRegion= getFindReplaceDocumentAdapter().find(startPosition, findString, forwardSearch, caseSensitive, wholeWord, regExSearch); | |
| 1754 if (matchRegion !is null) { | |
| 1755 exposeModelRange(matchRegion); | |
| 1756 revealRange(matchRegion.getOffset(), matchRegion.getLength()); | |
| 1757 setSelectedRange(matchRegion.getOffset(), matchRegion.getLength()); | |
| 1758 return matchRegion.getOffset(); | |
| 1759 } | |
| 1760 | |
| 1761 } catch (BadLocationException x) { | |
| 1762 } | |
| 1763 | |
| 1764 return -1; | |
| 1765 } | |
| 1766 | |
| 1767 /* | |
| 1768 * @see dwtx.jface.text.TextViewer#findAndSelectInRange(int, java.lang.String, bool, bool, bool, int, int, bool) | |
| 1769 */ | |
| 1770 protected int findAndSelectInRange(int startPosition, String findString, bool forwardSearch, bool caseSensitive, bool wholeWord, int rangeOffset, int rangeLength, bool regExSearch) { | |
| 1771 | |
| 1772 if (!isProjectionMode()) | |
| 1773 return super.findAndSelectInRange(startPosition, findString, forwardSearch, caseSensitive, wholeWord, rangeOffset, rangeLength, regExSearch); | |
| 1774 | |
| 1775 StyledText textWidget= getTextWidget(); | |
| 1776 if (textWidget is null) | |
| 1777 return -1; | |
| 1778 | |
| 1779 try { | |
| 1780 | |
| 1781 int modelOffset= startPosition; | |
| 1782 if (forwardSearch && (startPosition is -1 || startPosition < rangeOffset)) { | |
| 1783 modelOffset= rangeOffset; | |
| 1784 } else if (!forwardSearch && (startPosition is -1 || startPosition > rangeOffset + rangeLength)) { | |
| 1785 modelOffset= rangeOffset + rangeLength; | |
| 1786 } | |
| 1787 | |
| 1788 IRegion matchRegion= getFindReplaceDocumentAdapter().find(modelOffset, findString, forwardSearch, caseSensitive, wholeWord, regExSearch); | |
| 1789 if (matchRegion !is null) { | |
| 1790 int offset= matchRegion.getOffset(); | |
| 1791 int length= matchRegion.getLength(); | |
| 1792 if (rangeOffset <= offset && offset + length <= rangeOffset + rangeLength) { | |
| 1793 exposeModelRange(matchRegion); | |
| 1794 revealRange(offset, length); | |
| 1795 setSelectedRange(offset, length); | |
| 1796 return offset; | |
| 1797 } | |
| 1798 } | |
| 1799 | |
| 1800 } catch (BadLocationException x) { | |
| 1801 } | |
| 1802 | |
| 1803 return -1; | |
| 1804 } | |
| 1805 } |