Mercurial > projects > dwt-addons
annotate dwtx/jface/text/DocumentCommand.d @ 158:25f1f92fa3df
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| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Tue, 26 Aug 2008 02:46:34 +0200 |
| parents | a9566845f1cb |
| children | 7926b636c282 |
| rev | line source |
|---|---|
| 129 | 1 /******************************************************************************* |
| 2 * Copyright (c) 2000, 2007 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.DocumentCommand; |
| 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.TextViewerUndoManager; // packageimport | |
| 61 import dwtx.jface.text.IRegion; // packageimport | |
| 62 import dwtx.jface.text.IInformationControlExtension2; // packageimport | |
| 63 import dwtx.jface.text.IDocumentExtension4; // packageimport | |
| 64 import dwtx.jface.text.IDocumentExtension2; // packageimport | |
| 65 import dwtx.jface.text.IDocumentPartitionerExtension2; // packageimport | |
| 66 import dwtx.jface.text.Assert; // packageimport | |
| 67 import dwtx.jface.text.DefaultInformationControl; // packageimport | |
| 68 import dwtx.jface.text.IWidgetTokenOwnerExtension; // packageimport | |
| 69 import dwtx.jface.text.DocumentClone; // packageimport | |
| 70 import dwtx.jface.text.DefaultUndoManager; // packageimport | |
| 71 import dwtx.jface.text.IFindReplaceTarget; // packageimport | |
| 72 import dwtx.jface.text.IAutoEditStrategy; // packageimport | |
| 73 import dwtx.jface.text.ILineTrackerExtension; // packageimport | |
| 74 import dwtx.jface.text.IUndoManagerExtension; // packageimport | |
| 75 import dwtx.jface.text.TextSelection; // packageimport | |
| 76 import dwtx.jface.text.DefaultAutoIndentStrategy; // packageimport | |
| 77 import dwtx.jface.text.IAutoIndentStrategy; // packageimport | |
| 78 import dwtx.jface.text.IPainter; // packageimport | |
| 79 import dwtx.jface.text.IInformationControl; // packageimport | |
| 80 import dwtx.jface.text.IInformationControlExtension3; // packageimport | |
| 81 import dwtx.jface.text.ITextViewerExtension6; // packageimport | |
| 82 import dwtx.jface.text.IInformationControlExtension4; // packageimport | |
| 83 import dwtx.jface.text.DefaultLineTracker; // packageimport | |
| 84 import dwtx.jface.text.IDocumentInformationMappingExtension; // packageimport | |
| 85 import dwtx.jface.text.IRepairableDocumentExtension; // packageimport | |
| 86 import dwtx.jface.text.ITextHover; // packageimport | |
| 87 import dwtx.jface.text.FindReplaceDocumentAdapter; // packageimport | |
| 88 import dwtx.jface.text.ILineTracker; // packageimport | |
| 89 import dwtx.jface.text.Line; // packageimport | |
| 90 import dwtx.jface.text.ITextViewerExtension; // packageimport | |
| 91 import dwtx.jface.text.IDocumentAdapter; // packageimport | |
| 92 import dwtx.jface.text.TextEvent; // packageimport | |
| 93 import dwtx.jface.text.BadLocationException; // packageimport | |
| 94 import dwtx.jface.text.AbstractDocument; // packageimport | |
| 95 import dwtx.jface.text.AbstractLineTracker; // packageimport | |
| 96 import dwtx.jface.text.TreeLineTracker; // packageimport | |
| 97 import dwtx.jface.text.ITextPresentationListener; // packageimport | |
| 98 import dwtx.jface.text.Region; // packageimport | |
| 99 import dwtx.jface.text.ITextViewer; // packageimport | |
| 100 import dwtx.jface.text.IDocumentInformationMapping; // packageimport | |
| 101 import dwtx.jface.text.MarginPainter; // packageimport | |
| 102 import dwtx.jface.text.IPaintPositionManager; // packageimport | |
| 103 import dwtx.jface.text.TextPresentation; // packageimport | |
| 104 import dwtx.jface.text.IFindReplaceTargetExtension; // packageimport | |
| 105 import dwtx.jface.text.ISlaveDocumentManagerExtension; // packageimport | |
| 106 import dwtx.jface.text.ISelectionValidator; // packageimport | |
| 107 import dwtx.jface.text.IDocumentExtension; // packageimport | |
| 108 import dwtx.jface.text.PropagatingFontFieldEditor; // packageimport | |
| 109 import dwtx.jface.text.ConfigurableLineTracker; // packageimport | |
| 110 import dwtx.jface.text.SlaveDocumentEvent; // packageimport | |
| 111 import dwtx.jface.text.IDocumentListener; // packageimport | |
| 112 import dwtx.jface.text.PaintManager; // packageimport | |
| 113 import dwtx.jface.text.IFindReplaceTargetExtension3; // packageimport | |
| 114 import dwtx.jface.text.ITextDoubleClickStrategy; // packageimport | |
| 115 import dwtx.jface.text.IDocumentExtension3; // packageimport | |
| 116 import dwtx.jface.text.Position; // packageimport | |
| 117 import dwtx.jface.text.TextMessages; // packageimport | |
| 118 import dwtx.jface.text.CopyOnWriteTextStore; // packageimport | |
| 119 import dwtx.jface.text.WhitespaceCharacterPainter; // packageimport | |
| 120 import dwtx.jface.text.IPositionUpdater; // packageimport | |
| 121 import dwtx.jface.text.DefaultTextDoubleClickStrategy; // packageimport | |
| 122 import dwtx.jface.text.ListLineTracker; // packageimport | |
| 123 import dwtx.jface.text.ITextInputListener; // packageimport | |
| 124 import dwtx.jface.text.BadPositionCategoryException; // packageimport | |
| 125 import dwtx.jface.text.IWidgetTokenKeeperExtension; // packageimport | |
| 126 import dwtx.jface.text.IInputChangedListener; // packageimport | |
| 127 import dwtx.jface.text.ITextOperationTarget; // packageimport | |
| 128 import dwtx.jface.text.IDocumentInformationMappingExtension2; // packageimport | |
| 129 import dwtx.jface.text.ITextViewerExtension7; // packageimport | |
| 130 import dwtx.jface.text.IInformationControlExtension5; // packageimport | |
| 131 import dwtx.jface.text.IDocumentRewriteSessionListener; // packageimport | |
| 132 import dwtx.jface.text.JFaceTextUtil; // packageimport | |
| 133 import dwtx.jface.text.AbstractReusableInformationControlCreator; // packageimport | |
| 134 import dwtx.jface.text.TabsToSpacesConverter; // packageimport | |
| 135 import dwtx.jface.text.CursorLinePainter; // packageimport | |
| 136 import dwtx.jface.text.ITextHoverExtension; // packageimport | |
| 137 import dwtx.jface.text.IEventConsumer; // packageimport | |
| 138 import dwtx.jface.text.IDocument; // packageimport | |
| 139 import dwtx.jface.text.IWidgetTokenKeeper; // 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; |
|
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159 import dwtx.dwtxhelper.Collection; |
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160 |
| 129 | 161 import dwt.events.VerifyEvent; |
| 162 import dwtx.core.runtime.Assert; | |
| 163 | |
| 164 | |
| 165 /** | |
| 166 * Represents a text modification as a document replace command. The text | |
| 167 * modification is given as a {@link dwt.events.VerifyEvent} and | |
| 168 * translated into a document replace command relative to a given offset. A | |
| 169 * document command can also be used to initialize a given | |
| 170 * <code>VerifyEvent</code>. | |
| 171 * <p> | |
| 172 * A document command can also represent a list of related changes.</p> | |
| 173 */ | |
| 174 public class DocumentCommand { | |
| 175 | |
| 176 /** | |
| 177 * A command which is added to document commands. | |
| 178 * @since 2.1 | |
| 179 */ | |
| 180 private static class Command : Comparable { | |
| 181 /** The offset of the range to be replaced */ | |
| 146 | 182 private const int fOffset; |
| 129 | 183 /** The length of the range to be replaced. */ |
| 146 | 184 private const int fLength; |
| 129 | 185 /** The replacement text */ |
| 146 | 186 private const String fText; |
| 129 | 187 /** The listener who owns this command */ |
| 146 | 188 private const IDocumentListener fOwner; |
| 129 | 189 |
| 190 /** | |
| 191 * Creates a new command with the given specification. | |
| 192 * | |
| 193 * @param offset the offset of the replace command | |
| 194 * @param length the length of the replace command | |
| 195 * @param text the text to replace with, may be <code>null</code> | |
| 196 * @param owner the document command owner, may be <code>null</code> | |
| 197 * @since 3.0 | |
| 198 */ | |
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199 public this(int offset, int length, String text, IDocumentListener owner) { |
| 129 | 200 if (offset < 0 || length < 0) |
| 201 throw new IllegalArgumentException(); | |
| 202 fOffset= offset; | |
| 203 fLength= length; | |
| 204 fText= text; | |
| 205 fOwner= owner; | |
| 206 } | |
| 207 | |
| 208 /** | |
| 209 * Returns the length delta for this command. | |
| 210 * | |
| 211 * @return the length delta for this command | |
| 212 */ | |
| 213 public int getDeltaLength() { | |
| 214 return (fText is null ? 0 : fText.length()) - fLength; | |
| 215 } | |
| 216 | |
| 217 /** | |
| 218 * Executes the document command on the specified document. | |
| 219 * | |
| 220 * @param document the document on which to execute the command. | |
| 221 * @throws BadLocationException in case this commands cannot be executed | |
| 222 */ | |
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223 public void execute(IDocument document) { |
| 129 | 224 |
| 225 if (fLength is 0 && fText is null) | |
| 226 return; | |
| 227 | |
| 228 if (fOwner !is null) | |
| 229 document.removeDocumentListener(fOwner); | |
| 230 | |
| 231 document.replace(fOffset, fLength, fText); | |
| 232 | |
| 233 if (fOwner !is null) | |
| 234 document.addDocumentListener(fOwner); | |
| 235 } | |
| 236 | |
| 237 /* | |
| 238 * @see java.util.Comparator#compare(java.lang.Object, java.lang.Object) | |
| 239 */ | |
| 156 | 240 public int compareTo(Object object) { |
| 129 | 241 if (isEqual(object)) |
| 242 return 0; | |
| 243 | |
| 134 | 244 final Command command= cast(Command) object; |
| 129 | 245 |
| 246 // diff middle points if not intersecting | |
| 247 if (fOffset + fLength <= command.fOffset || command.fOffset + command.fLength <= fOffset) { | |
| 248 int value= (2 * fOffset + fLength) - (2 * command.fOffset + command.fLength); | |
| 249 if (value !is 0) | |
| 250 return value; | |
| 251 } | |
| 252 // the answer | |
| 253 return 42; | |
| 254 } | |
| 255 | |
| 256 private bool isEqual(Object object) { | |
| 257 if (object is this) | |
| 258 return true; | |
| 138 | 259 if (!( cast(Command)object )) |
| 129 | 260 return false; |
| 134 | 261 final Command command= cast(Command) object; |
| 129 | 262 return command.fOffset is fOffset && command.fLength is fLength; |
| 263 } | |
| 264 } | |
| 265 | |
| 266 /** | |
| 267 * An iterator, which iterates in reverse over a list. | |
| 268 */ | |
| 269 private static class ReverseListIterator : Iterator { | |
| 270 | |
| 271 /** The list iterator. */ | |
| 146 | 272 private const ListIterator fListIterator; |
| 129 | 273 |
| 274 /** | |
| 275 * Creates a reverse list iterator. | |
| 276 * @param listIterator the iterator that this reverse iterator is based upon | |
| 277 */ | |
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278 public this(ListIterator listIterator) { |
| 129 | 279 if (listIterator is null) |
| 280 throw new IllegalArgumentException(); | |
| 281 fListIterator= listIterator; | |
| 282 } | |
| 283 | |
| 284 /* | |
| 285 * @see java.util.Iterator#hasNext() | |
| 286 */ | |
| 287 public bool hasNext() { | |
| 288 return fListIterator.hasPrevious(); | |
| 289 } | |
| 290 | |
| 291 /* | |
| 292 * @see java.util.Iterator#next() | |
| 293 */ | |
| 294 public Object next() { | |
| 295 return fListIterator.previous(); | |
| 296 } | |
| 297 | |
| 298 /* | |
| 299 * @see java.util.Iterator#remove() | |
| 300 */ | |
| 301 public void remove() { | |
| 302 throw new UnsupportedOperationException(); | |
| 303 } | |
| 304 } | |
| 305 | |
| 306 /** | |
| 307 * A command iterator. | |
| 308 */ | |
| 309 private static class CommandIterator : Iterator { | |
| 310 | |
| 311 /** The command iterator. */ | |
| 146 | 312 private const Iterator fIterator; |
| 129 | 313 |
| 314 /** The original command. */ | |
| 315 private Command fCommand; | |
| 316 | |
| 317 /** A flag indicating the direction of iteration. */ | |
| 318 private bool fForward; | |
| 319 | |
| 320 /** | |
| 321 * Creates a command iterator. | |
| 322 * | |
| 323 * @param commands an ascending ordered list of commands | |
| 324 * @param command the original command | |
| 325 * @param forward the direction | |
| 326 */ | |
| 156 | 327 public this(List commands, Command command, bool forward) { |
| 129 | 328 if (commands is null || command is null) |
| 329 throw new IllegalArgumentException(); | |
| 330 fIterator= forward ? commands.iterator() : new ReverseListIterator(commands.listIterator(commands.size())); | |
| 331 fCommand= command; | |
| 332 fForward= forward; | |
| 333 } | |
| 334 | |
| 335 /* | |
| 336 * @see java.util.Iterator#hasNext() | |
| 337 */ | |
| 338 public bool hasNext() { | |
| 339 return fCommand !is null || fIterator.hasNext(); | |
| 340 } | |
| 341 | |
| 342 /* | |
| 343 * @see java.util.Iterator#next() | |
| 344 */ | |
| 345 public Object next() { | |
| 346 | |
| 347 if (!hasNext()) | |
| 348 throw new NoSuchElementException(); | |
| 349 | |
| 350 if (fCommand is null) | |
| 351 return fIterator.next(); | |
| 352 | |
| 353 if (!fIterator.hasNext()) { | |
| 354 final Command tempCommand= fCommand; | |
| 355 fCommand= null; | |
| 356 return tempCommand; | |
| 357 } | |
| 358 | |
| 134 | 359 final Command command= cast(Command) fIterator.next(); |
| 129 | 360 final int compareValue= command.compareTo(fCommand); |
| 361 | |
| 362 if ((compareValue < 0) ^ !fForward) { | |
| 363 return command; | |
| 364 | |
| 365 } else if ((compareValue > 0) ^ !fForward) { | |
| 366 final Command tempCommand= fCommand; | |
| 367 fCommand= command; | |
| 368 return tempCommand; | |
| 369 | |
| 370 } else { | |
| 371 throw new IllegalArgumentException(); | |
| 372 } | |
| 373 } | |
| 374 | |
| 375 /* | |
| 376 * @see java.util.Iterator#remove() | |
| 377 */ | |
| 378 public void remove() { | |
| 379 throw new UnsupportedOperationException(); | |
| 380 } | |
| 381 } | |
| 382 | |
| 383 /** Must the command be updated */ | |
| 384 public bool doit= false; | |
| 385 /** The offset of the command. */ | |
| 386 public int offset; | |
| 387 /** The length of the command */ | |
| 388 public int length; | |
| 389 /** The text to be inserted */ | |
| 390 public String text; | |
| 391 /** | |
| 392 * The owner of the document command which will not be notified. | |
| 393 * @since 2.1 | |
| 394 */ | |
| 395 public IDocumentListener owner; | |
| 396 /** | |
| 397 * The caret offset with respect to the document before the document command is executed. | |
| 398 * @since 2.1 | |
| 399 */ | |
| 400 public int caretOffset; | |
| 401 /** | |
| 402 * Additional document commands. | |
| 403 * @since 2.1 | |
| 404 */ | |
| 146 | 405 private const List fCommands= new ArrayList(); |
| 129 | 406 /** |
| 407 * Indicates whether the caret should be shifted by this command. | |
| 408 * @since 3.0 | |
| 409 */ | |
| 410 public bool shiftsCaret; | |
| 411 | |
| 412 | |
| 413 /** | |
| 414 * Creates a new document command. | |
| 415 */ | |
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416 protected this() { |
| 129 | 417 } |
| 418 | |
| 419 /** | |
| 420 * Translates a verify event into a document replace command using the given offset. | |
| 421 * | |
| 422 * @param event the event to be translated | |
| 423 * @param modelRange the event range as model range | |
| 424 */ | |
| 425 void setEvent(VerifyEvent event, IRegion modelRange) { | |
| 426 | |
| 427 doit= true; | |
| 428 text= event.text; | |
| 429 | |
| 430 offset= modelRange.getOffset(); | |
| 431 length= modelRange.getLength(); | |
| 432 | |
| 433 owner= null; | |
| 434 caretOffset= -1; | |
| 435 shiftsCaret= true; | |
| 436 fCommands.clear(); | |
| 437 } | |
| 438 | |
| 439 /** | |
| 440 * Fills the given verify event with the replace text and the <code>doit</code> | |
| 441 * flag of this document command. Returns whether the document command | |
| 442 * covers the same range as the verify event considering the given offset. | |
| 443 * | |
| 444 * @param event the event to be changed | |
| 445 * @param modelRange to be considered for range comparison | |
| 446 * @return <code>true</code> if this command and the event cover the same range | |
| 447 */ | |
| 448 bool fillEvent(VerifyEvent event, IRegion modelRange) { | |
| 449 event.text= text; | |
| 450 event.doit= (offset is modelRange.getOffset() && length is modelRange.getLength() && doit && caretOffset is -1); | |
| 451 return event.doit; | |
| 452 } | |
| 453 | |
| 454 /** | |
| 455 * Adds an additional replace command. The added replace command must not overlap | |
| 456 * with existing ones. If the document command owner is not <code>null</code>, it will not | |
| 457 * get document change notifications for the particular command. | |
| 458 * | |
| 459 * @param commandOffset the offset of the region to replace | |
| 460 * @param commandLength the length of the region to replace | |
| 461 * @param commandText the text to replace with, may be <code>null</code> | |
| 462 * @param commandOwner the command owner, may be <code>null</code> | |
| 463 * @throws BadLocationException if the added command intersects with an existing one | |
| 464 * @since 2.1 | |
| 465 */ | |
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466 public void addCommand(int commandOffset, int commandLength, String commandText, IDocumentListener commandOwner) { |
| 129 | 467 final Command command= new Command(commandOffset, commandLength, commandText, commandOwner); |
| 468 | |
| 469 if (intersects(command)) | |
| 470 throw new BadLocationException(); | |
| 471 | |
| 472 final int index= Collections.binarySearch(fCommands, command); | |
| 473 | |
| 474 // a command with exactly the same ranges exists already | |
| 475 if (index >= 0) | |
| 476 throw new BadLocationException(); | |
| 477 | |
| 478 // binary search result is defined as (-(insertionIndex) - 1) | |
| 479 final int insertionIndex= -(index + 1); | |
| 480 | |
| 481 // overlaps to the right? | |
| 134 | 482 if (insertionIndex !is fCommands.size() && intersects(cast(Command) fCommands.get(insertionIndex), command)) |
| 129 | 483 throw new BadLocationException(); |
| 484 | |
| 485 // overlaps to the left? | |
| 134 | 486 if (insertionIndex !is 0 && intersects(cast(Command) fCommands.get(insertionIndex - 1), command)) |
| 129 | 487 throw new BadLocationException(); |
| 488 | |
| 489 fCommands.add(insertionIndex, command); | |
| 490 } | |
| 491 | |
| 492 /** | |
| 493 * Returns an iterator over the commands in ascending position order. | |
| 494 * The iterator includes the original document command. | |
| 495 * Commands cannot be removed. | |
| 496 * | |
| 497 * @return returns the command iterator | |
| 498 */ | |
| 499 public Iterator getCommandIterator() { | |
| 500 Command command= new Command(offset, length, text, owner); | |
| 501 return new CommandIterator(fCommands, command, true); | |
| 502 } | |
| 503 | |
| 504 /** | |
| 505 * Returns the number of commands including the original document command. | |
| 506 * | |
| 507 * @return returns the number of commands | |
| 508 * @since 2.1 | |
| 509 */ | |
| 510 public int getCommandCount() { | |
| 511 return 1 + fCommands.size(); | |
| 512 } | |
| 513 | |
| 514 /** | |
| 515 * Returns whether the two given commands intersect. | |
| 516 * | |
| 517 * @param command0 the first command | |
| 518 * @param command1 the second command | |
| 519 * @return <code>true</code> if the commands intersect | |
| 520 * @since 2.1 | |
| 521 */ | |
| 522 private bool intersects(Command command0, Command command1) { | |
| 523 // diff middle points if not intersecting | |
| 524 if (command0.fOffset + command0.fLength <= command1.fOffset || command1.fOffset + command1.fLength <= command0.fOffset) | |
| 525 return (2 * command0.fOffset + command0.fLength) - (2 * command1.fOffset + command1.fLength) is 0; | |
| 526 return true; | |
| 527 } | |
| 528 | |
| 529 /** | |
| 530 * Returns whether the given command intersects with this command. | |
| 531 * | |
| 532 * @param command the command | |
| 533 * @return <code>true</code> if the command intersects with this command | |
| 534 * @since 2.1 | |
| 535 */ | |
| 536 private bool intersects(Command command) { | |
| 537 // diff middle points if not intersecting | |
| 538 if (offset + length <= command.fOffset || command.fOffset + command.fLength <= offset) | |
| 539 return (2 * offset + length) - (2 * command.fOffset + command.fLength) is 0; | |
| 540 return true; | |
| 541 } | |
| 542 | |
| 543 /** | |
| 544 * Executes the document commands on a document. | |
| 545 * | |
| 546 * @param document the document on which to execute the commands | |
| 547 * @throws BadLocationException in case access to the given document fails | |
| 548 * @since 2.1 | |
| 549 */ | |
|
136
6dcb0baaa031
Regex removal of throws decls, some instanceof
Frank Benoit <benoit@tionex.de>
parents:
134
diff
changeset
|
550 void execute(IDocument document) { |
| 129 | 551 |
| 552 if (length is 0 && text is null && fCommands.size() is 0) | |
| 553 return; | |
| 554 | |
| 555 DefaultPositionUpdater updater= new DefaultPositionUpdater(getCategory()); | |
| 556 Position caretPosition= null; | |
| 557 try { | |
| 558 if (updateCaret()) { | |
| 559 document.addPositionCategory(getCategory()); | |
| 560 document.addPositionUpdater(updater); | |
| 561 caretPosition= new Position(caretOffset); | |
| 562 document.addPosition(getCategory(), caretPosition); | |
| 563 } | |
| 564 | |
| 565 final Command originalCommand= new Command(offset, length, text, owner); | |
| 566 for (final Iterator iterator= new CommandIterator(fCommands, originalCommand, false); iterator.hasNext(); ) | |
| 134 | 567 (cast(Command) iterator.next()).execute(document); |
| 129 | 568 |
| 569 } catch (BadLocationException e) { | |
| 570 // ignore | |
| 571 } catch (BadPositionCategoryException e) { | |
| 572 // ignore | |
| 573 } finally { | |
| 574 if (updateCaret()) { | |
| 575 document.removePositionUpdater(updater); | |
| 576 try { | |
| 577 document.removePositionCategory(getCategory()); | |
| 578 } catch (BadPositionCategoryException e) { | |
| 579 Assert.isTrue(false); | |
| 580 } | |
| 581 caretOffset= caretPosition.getOffset(); | |
| 582 } | |
| 583 } | |
| 584 } | |
| 585 | |
| 586 /** | |
| 587 * Returns <code>true</code> if the caret offset should be updated, <code>false</code> otherwise. | |
| 588 * | |
| 589 * @return <code>true</code> if the caret offset should be updated, <code>false</code> otherwise | |
| 590 * @since 3.0 | |
| 591 */ | |
| 592 private bool updateCaret() { | |
| 593 return shiftsCaret && caretOffset !is -1; | |
| 594 } | |
| 595 | |
| 596 /** | |
| 597 * Returns the position category for the caret offset position. | |
| 598 * | |
| 599 * @return the position category for the caret offset position | |
| 600 * @since 3.0 | |
| 601 */ | |
| 602 private String getCategory() { | |
| 603 return toString(); | |
| 604 } | |
| 605 | |
| 606 } |