Mercurial > projects > dwt-addons
annotate dwtx/jface/text/TextSelection.d @ 162:1a5b8f8129df
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| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Mon, 08 Sep 2008 00:51:37 +0200 |
| parents | 3678e4f1a766 |
| children |
| rev | line source |
|---|---|
| 129 | 1 /******************************************************************************* |
| 2 * Copyright (c) 2000, 2005 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.TextSelection; | |
| 14 | |
| 131 | 15 import dwtx.jface.text.IDocumentPartitioningListener; // packageimport |
| 16 import dwtx.jface.text.DefaultTextHover; // packageimport | |
| 17 import dwtx.jface.text.AbstractInformationControl; // packageimport | |
| 18 import dwtx.jface.text.TextUtilities; // packageimport | |
| 19 import dwtx.jface.text.IInformationControlCreatorExtension; // packageimport | |
| 20 import dwtx.jface.text.AbstractInformationControlManager; // packageimport | |
| 21 import dwtx.jface.text.ITextViewerExtension2; // packageimport | |
| 22 import dwtx.jface.text.IDocumentPartitioner; // packageimport | |
| 23 import dwtx.jface.text.DefaultIndentLineAutoEditStrategy; // packageimport | |
| 24 import dwtx.jface.text.ITextSelection; // packageimport | |
| 25 import dwtx.jface.text.Document; // packageimport | |
| 26 import dwtx.jface.text.FindReplaceDocumentAdapterContentProposalProvider; // packageimport | |
| 27 import dwtx.jface.text.ITextListener; // packageimport | |
| 28 import dwtx.jface.text.BadPartitioningException; // packageimport | |
| 29 import dwtx.jface.text.ITextViewerExtension5; // packageimport | |
| 30 import dwtx.jface.text.IDocumentPartitionerExtension3; // packageimport | |
| 31 import dwtx.jface.text.IUndoManager; // packageimport | |
| 32 import dwtx.jface.text.ITextHoverExtension2; // packageimport | |
| 33 import dwtx.jface.text.IRepairableDocument; // packageimport | |
| 34 import dwtx.jface.text.IRewriteTarget; // packageimport | |
| 35 import dwtx.jface.text.DefaultPositionUpdater; // packageimport | |
| 36 import dwtx.jface.text.RewriteSessionEditProcessor; // packageimport | |
| 37 import dwtx.jface.text.TextViewerHoverManager; // packageimport | |
| 38 import dwtx.jface.text.DocumentRewriteSession; // packageimport | |
| 39 import dwtx.jface.text.TextViewer; // packageimport | |
| 40 import dwtx.jface.text.ITextViewerExtension8; // packageimport | |
| 41 import dwtx.jface.text.RegExMessages; // packageimport | |
| 42 import dwtx.jface.text.IDelayedInputChangeProvider; // packageimport | |
| 43 import dwtx.jface.text.ITextOperationTargetExtension; // packageimport | |
| 44 import dwtx.jface.text.IWidgetTokenOwner; // packageimport | |
| 45 import dwtx.jface.text.IViewportListener; // packageimport | |
| 46 import dwtx.jface.text.GapTextStore; // packageimport | |
| 47 import dwtx.jface.text.MarkSelection; // packageimport | |
| 48 import dwtx.jface.text.IDocumentPartitioningListenerExtension; // packageimport | |
| 49 import dwtx.jface.text.IDocumentAdapterExtension; // packageimport | |
| 50 import dwtx.jface.text.IInformationControlExtension; // packageimport | |
| 51 import dwtx.jface.text.IDocumentPartitioningListenerExtension2; // packageimport | |
| 52 import dwtx.jface.text.DefaultDocumentAdapter; // packageimport | |
| 53 import dwtx.jface.text.ITextViewerExtension3; // packageimport | |
| 54 import dwtx.jface.text.IInformationControlCreator; // packageimport | |
| 55 import dwtx.jface.text.TypedRegion; // packageimport | |
| 56 import dwtx.jface.text.ISynchronizable; // packageimport | |
| 57 import dwtx.jface.text.IMarkRegionTarget; // packageimport | |
| 58 import dwtx.jface.text.TextViewerUndoManager; // packageimport | |
| 59 import dwtx.jface.text.IRegion; // packageimport | |
| 60 import dwtx.jface.text.IInformationControlExtension2; // packageimport | |
| 61 import dwtx.jface.text.IDocumentExtension4; // packageimport | |
| 62 import dwtx.jface.text.IDocumentExtension2; // packageimport | |
| 63 import dwtx.jface.text.IDocumentPartitionerExtension2; // packageimport | |
| 64 import dwtx.jface.text.Assert; // packageimport | |
| 65 import dwtx.jface.text.DefaultInformationControl; // packageimport | |
| 66 import dwtx.jface.text.IWidgetTokenOwnerExtension; // packageimport | |
| 67 import dwtx.jface.text.DocumentClone; // packageimport | |
| 68 import dwtx.jface.text.DefaultUndoManager; // packageimport | |
| 69 import dwtx.jface.text.IFindReplaceTarget; // packageimport | |
| 70 import dwtx.jface.text.IAutoEditStrategy; // packageimport | |
| 71 import dwtx.jface.text.ILineTrackerExtension; // packageimport | |
| 72 import dwtx.jface.text.IUndoManagerExtension; // packageimport | |
| 73 import dwtx.jface.text.DefaultAutoIndentStrategy; // packageimport | |
| 74 import dwtx.jface.text.IAutoIndentStrategy; // packageimport | |
| 75 import dwtx.jface.text.IPainter; // packageimport | |
| 76 import dwtx.jface.text.IInformationControl; // packageimport | |
| 77 import dwtx.jface.text.IInformationControlExtension3; // packageimport | |
| 78 import dwtx.jface.text.ITextViewerExtension6; // packageimport | |
| 79 import dwtx.jface.text.IInformationControlExtension4; // packageimport | |
| 80 import dwtx.jface.text.DefaultLineTracker; // packageimport | |
| 81 import dwtx.jface.text.IDocumentInformationMappingExtension; // packageimport | |
| 82 import dwtx.jface.text.IRepairableDocumentExtension; // packageimport | |
| 83 import dwtx.jface.text.ITextHover; // packageimport | |
| 84 import dwtx.jface.text.FindReplaceDocumentAdapter; // packageimport | |
| 85 import dwtx.jface.text.ILineTracker; // packageimport | |
| 86 import dwtx.jface.text.Line; // packageimport | |
| 87 import dwtx.jface.text.ITextViewerExtension; // packageimport | |
| 88 import dwtx.jface.text.IDocumentAdapter; // packageimport | |
| 89 import dwtx.jface.text.TextEvent; // packageimport | |
| 90 import dwtx.jface.text.BadLocationException; // packageimport | |
| 91 import dwtx.jface.text.AbstractDocument; // packageimport | |
| 92 import dwtx.jface.text.AbstractLineTracker; // packageimport | |
| 93 import dwtx.jface.text.TreeLineTracker; // packageimport | |
| 94 import dwtx.jface.text.ITextPresentationListener; // packageimport | |
| 95 import dwtx.jface.text.Region; // packageimport | |
| 96 import dwtx.jface.text.ITextViewer; // packageimport | |
| 97 import dwtx.jface.text.IDocumentInformationMapping; // packageimport | |
| 98 import dwtx.jface.text.MarginPainter; // packageimport | |
| 99 import dwtx.jface.text.IPaintPositionManager; // packageimport | |
| 100 import dwtx.jface.text.TextPresentation; // packageimport | |
| 101 import dwtx.jface.text.IFindReplaceTargetExtension; // packageimport | |
| 102 import dwtx.jface.text.ISlaveDocumentManagerExtension; // packageimport | |
| 103 import dwtx.jface.text.ISelectionValidator; // packageimport | |
| 104 import dwtx.jface.text.IDocumentExtension; // packageimport | |
| 105 import dwtx.jface.text.PropagatingFontFieldEditor; // packageimport | |
| 106 import dwtx.jface.text.ConfigurableLineTracker; // packageimport | |
| 107 import dwtx.jface.text.SlaveDocumentEvent; // packageimport | |
| 108 import dwtx.jface.text.IDocumentListener; // packageimport | |
| 109 import dwtx.jface.text.PaintManager; // packageimport | |
| 110 import dwtx.jface.text.IFindReplaceTargetExtension3; // packageimport | |
| 111 import dwtx.jface.text.ITextDoubleClickStrategy; // packageimport | |
| 112 import dwtx.jface.text.IDocumentExtension3; // packageimport | |
| 113 import dwtx.jface.text.Position; // packageimport | |
| 114 import dwtx.jface.text.TextMessages; // packageimport | |
| 115 import dwtx.jface.text.CopyOnWriteTextStore; // packageimport | |
| 116 import dwtx.jface.text.WhitespaceCharacterPainter; // packageimport | |
| 117 import dwtx.jface.text.IPositionUpdater; // packageimport | |
| 118 import dwtx.jface.text.DefaultTextDoubleClickStrategy; // packageimport | |
| 119 import dwtx.jface.text.ListLineTracker; // packageimport | |
| 120 import dwtx.jface.text.ITextInputListener; // packageimport | |
| 121 import dwtx.jface.text.BadPositionCategoryException; // packageimport | |
| 122 import dwtx.jface.text.IWidgetTokenKeeperExtension; // packageimport | |
| 123 import dwtx.jface.text.IInputChangedListener; // packageimport | |
| 124 import dwtx.jface.text.ITextOperationTarget; // packageimport | |
| 125 import dwtx.jface.text.IDocumentInformationMappingExtension2; // packageimport | |
| 126 import dwtx.jface.text.ITextViewerExtension7; // packageimport | |
| 127 import dwtx.jface.text.IInformationControlExtension5; // packageimport | |
| 128 import dwtx.jface.text.IDocumentRewriteSessionListener; // packageimport | |
| 129 import dwtx.jface.text.JFaceTextUtil; // packageimport | |
| 130 import dwtx.jface.text.AbstractReusableInformationControlCreator; // packageimport | |
| 131 import dwtx.jface.text.TabsToSpacesConverter; // packageimport | |
| 132 import dwtx.jface.text.CursorLinePainter; // packageimport | |
| 133 import dwtx.jface.text.ITextHoverExtension; // packageimport | |
| 134 import dwtx.jface.text.IEventConsumer; // packageimport | |
| 135 import dwtx.jface.text.IDocument; // packageimport | |
| 136 import dwtx.jface.text.IWidgetTokenKeeper; // packageimport | |
| 137 import dwtx.jface.text.DocumentCommand; // packageimport | |
| 138 import dwtx.jface.text.TypedPosition; // packageimport | |
| 139 import dwtx.jface.text.IEditingSupportRegistry; // packageimport | |
| 140 import dwtx.jface.text.IDocumentPartitionerExtension; // packageimport | |
| 141 import dwtx.jface.text.AbstractHoverInformationControlManager; // packageimport | |
| 142 import dwtx.jface.text.IEditingSupport; // packageimport | |
| 143 import dwtx.jface.text.IMarkSelection; // packageimport | |
| 144 import dwtx.jface.text.ISlaveDocumentManager; // packageimport | |
| 145 import dwtx.jface.text.DocumentEvent; // packageimport | |
| 146 import dwtx.jface.text.DocumentPartitioningChangedEvent; // packageimport | |
| 147 import dwtx.jface.text.ITextStore; // packageimport | |
| 148 import dwtx.jface.text.JFaceTextMessages; // packageimport | |
| 149 import dwtx.jface.text.DocumentRewriteSessionEvent; // packageimport | |
| 150 import dwtx.jface.text.SequentialRewriteTextStore; // packageimport | |
| 151 import dwtx.jface.text.DocumentRewriteSessionType; // packageimport | |
| 152 import dwtx.jface.text.TextAttribute; // packageimport | |
| 153 import dwtx.jface.text.ITextViewerExtension4; // packageimport | |
| 154 import dwtx.jface.text.ITypedRegion; // packageimport | |
| 155 | |
| 156 | |
| 129 | 157 import dwt.dwthelper.utils; |
| 158 | |
| 159 | |
| 160 /** | |
| 161 * Standard implementation of {@link dwtx.jface.text.ITextSelection}. | |
| 162 * <p> | |
| 163 * Makes advantage of the weak contract of correctness of its interface. If | |
| 164 * generated from a selection provider, it only remembers its offset and length | |
| 165 * and computes the remaining information on request.</p> | |
| 166 */ | |
| 167 public class TextSelection : ITextSelection { | |
| 168 | |
| 169 /** Internal empty text selection */ | |
| 162 | 170 private static ITextSelection NULL_; |
| 171 private static ITextSelection NULL(){ | |
| 172 if( NULL_ is null ){ | |
| 173 synchronized( TextSelection.classinfo ){ | |
| 174 if( NULL_ is null ){ | |
| 175 NULL_= new TextSelection(); | |
| 176 } | |
| 177 } | |
| 178 } | |
| 179 return NULL_; | |
| 180 } | |
| 129 | 181 |
| 182 /** | |
| 183 * Returns a shared instance of an empty text selection. | |
| 184 * | |
| 185 * @return a shared instance of an empty text selection | |
| 186 */ | |
| 187 public static ITextSelection emptySelection() { | |
| 188 return NULL; | |
| 189 } | |
| 190 | |
| 191 /** Document which delivers the data of the selection */ | |
| 192 private IDocument fDocument; | |
| 193 /** Offset of the selection */ | |
| 194 private int fOffset; | |
| 195 /** Length of the selection */ | |
| 196 private int fLength; | |
| 197 | |
| 198 | |
| 199 /** | |
| 200 * Creates an empty text selection. | |
| 201 */ | |
|
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changeset
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202 private this() { |
| 129 | 203 this(null, -1, -1); |
| 204 } | |
| 205 | |
| 206 /** | |
| 207 * Creates a text selection for the given range. This | |
| 208 * selection object describes generically a text range and | |
| 209 * is intended to be an argument for the <code>setSelection</code> | |
| 210 * method of selection providers. | |
| 211 * | |
| 212 * @param offset the offset of the range | |
| 213 * @param length the length of the range | |
| 214 */ | |
|
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215 public this(int offset, int length) { |
| 129 | 216 this(null, offset, length); |
| 217 } | |
| 218 | |
| 219 /** | |
| 220 * Creates a text selection for the given range of the given document. | |
| 221 * This selection object is created by selection providers in responds | |
| 222 * <code>getSelection</code>. | |
| 223 * | |
| 224 * @param document the document whose text range is selected in a viewer | |
| 225 * @param offset the offset of the selected range | |
| 226 * @param length the length of the selected range | |
| 227 */ | |
|
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parents:
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diff
changeset
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228 public this(IDocument document, int offset, int length) { |
| 129 | 229 fDocument= document; |
| 230 fOffset= offset; | |
| 231 fLength= length; | |
| 232 } | |
| 233 | |
| 234 /** | |
| 235 * | |
| 236 * Returns true if the offset and length are smaller than 0. | |
| 237 * A selection of length 0, is a valid text selection as it | |
| 238 * describes, e.g., the cursor position in a viewer. | |
| 239 * | |
| 240 * @return <code>true</code> if this selection is empty | |
| 241 * @see dwtx.jface.viewers.ISelection#isEmpty() | |
| 242 */ | |
| 243 public bool isEmpty() { | |
| 244 return fOffset < 0 || fLength < 0; | |
| 245 } | |
| 246 | |
| 247 /* | |
| 248 * @see dwtx.jface.text.ITextSelection#getOffset() | |
| 249 */ | |
| 250 public int getOffset() { | |
| 251 return fOffset; | |
| 252 } | |
| 253 | |
| 254 /* | |
| 255 * @see dwtx.jface.text.ITextSelection#getLength() | |
| 256 */ | |
| 257 public int getLength() { | |
| 258 return fLength; | |
| 259 } | |
| 260 | |
| 261 /* | |
| 262 * @see dwtx.jface.text.ITextSelection#getStartLine() | |
| 263 */ | |
| 264 public int getStartLine() { | |
| 265 | |
| 266 try { | |
| 267 if (fDocument !is null) | |
| 268 return fDocument.getLineOfOffset(fOffset); | |
| 269 } catch (BadLocationException x) { | |
| 270 } | |
| 271 | |
| 272 return -1; | |
| 273 } | |
| 274 | |
| 275 /* | |
| 276 * @see dwtx.jface.text.ITextSelection#getEndLine() | |
| 277 */ | |
| 278 public int getEndLine() { | |
| 279 try { | |
| 280 if (fDocument !is null) { | |
| 281 int endOffset= fOffset + fLength; | |
| 282 if (fLength !is 0) | |
| 283 endOffset--; | |
| 284 return fDocument.getLineOfOffset(endOffset); | |
| 285 } | |
| 286 } catch (BadLocationException x) { | |
| 287 } | |
| 288 | |
| 289 return -1; | |
| 290 } | |
| 291 | |
| 292 /* | |
| 293 * @see dwtx.jface.text.ITextSelection#getText() | |
| 294 */ | |
| 295 public String getText() { | |
| 296 try { | |
| 297 if (fDocument !is null) | |
| 298 return fDocument.get(fOffset, fLength); | |
| 299 } catch (BadLocationException x) { | |
| 300 } | |
| 301 | |
| 302 return null; | |
| 303 } | |
| 304 | |
| 305 /* | |
| 306 * @see java.lang.Object#equals(Object) | |
| 307 */ | |
| 162 | 308 public override int opEquals(Object obj) { |
| 129 | 309 if (obj is this) |
| 310 return true; | |
| 311 | |
| 162 | 312 if (obj is null || this.classinfo !is obj.classinfo) |
| 129 | 313 return false; |
| 314 | |
| 134 | 315 TextSelection s= cast(TextSelection) obj; |
| 129 | 316 bool sameRange= (s.fOffset is fOffset && s.fLength is fLength); |
| 317 if (sameRange) { | |
| 318 | |
| 319 if (s.fDocument is null && fDocument is null) | |
| 320 return true; | |
| 321 if (s.fDocument is null || fDocument is null) | |
| 322 return false; | |
| 323 | |
| 324 try { | |
| 325 String sContent= s.fDocument.get(fOffset, fLength); | |
| 326 String content= fDocument.get(fOffset, fLength); | |
| 162 | 327 return sContent==/+eq+/content; |
| 129 | 328 } catch (BadLocationException x) { |
| 329 } | |
| 330 } | |
| 331 | |
| 332 return false; | |
| 333 } | |
| 334 | |
| 335 /* | |
| 336 * @see java.lang.Object#hashCode() | |
| 337 */ | |
| 160 | 338 public override hash_t toHash() { |
| 162 | 339 int low= fDocument !is null ? (cast(Object)fDocument).toHash() : 0; |
| 129 | 340 return (fOffset << 24) | (fLength << 16) | low; |
| 341 } | |
| 342 } | |
| 343 |