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comparison org.eclipse.jface.text/src/org/eclipse/jface/text/TextSelection.d @ 12:bc29606a740c

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Added dwt-addons in original directory structure of eclipse.org
author Frank Benoit <benoit@tionex.de>
date Sat, 14 Mar 2009 18:23:29 +0100
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11:43904fec5dca 12:bc29606a740c
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 org.eclipse.jface.text.TextSelection;
14
15 import org.eclipse.jface.text.IDocumentPartitioningListener; // packageimport
16 import org.eclipse.jface.text.DefaultTextHover; // packageimport
17 import org.eclipse.jface.text.AbstractInformationControl; // packageimport
18 import org.eclipse.jface.text.TextUtilities; // packageimport
19 import org.eclipse.jface.text.IInformationControlCreatorExtension; // packageimport
20 import org.eclipse.jface.text.AbstractInformationControlManager; // packageimport
21 import org.eclipse.jface.text.ITextViewerExtension2; // packageimport
22 import org.eclipse.jface.text.IDocumentPartitioner; // packageimport
23 import org.eclipse.jface.text.DefaultIndentLineAutoEditStrategy; // packageimport
24 import org.eclipse.jface.text.ITextSelection; // packageimport
25 import org.eclipse.jface.text.Document; // packageimport
26 import org.eclipse.jface.text.FindReplaceDocumentAdapterContentProposalProvider; // packageimport
27 import org.eclipse.jface.text.ITextListener; // packageimport
28 import org.eclipse.jface.text.BadPartitioningException; // packageimport
29 import org.eclipse.jface.text.ITextViewerExtension5; // packageimport
30 import org.eclipse.jface.text.IDocumentPartitionerExtension3; // packageimport
31 import org.eclipse.jface.text.IUndoManager; // packageimport
32 import org.eclipse.jface.text.ITextHoverExtension2; // packageimport
33 import org.eclipse.jface.text.IRepairableDocument; // packageimport
34 import org.eclipse.jface.text.IRewriteTarget; // packageimport
35 import org.eclipse.jface.text.DefaultPositionUpdater; // packageimport
36 import org.eclipse.jface.text.RewriteSessionEditProcessor; // packageimport
37 import org.eclipse.jface.text.TextViewerHoverManager; // packageimport
38 import org.eclipse.jface.text.DocumentRewriteSession; // packageimport
39 import org.eclipse.jface.text.TextViewer; // packageimport
40 import org.eclipse.jface.text.ITextViewerExtension8; // packageimport
41 import org.eclipse.jface.text.RegExMessages; // packageimport
42 import org.eclipse.jface.text.IDelayedInputChangeProvider; // packageimport
43 import org.eclipse.jface.text.ITextOperationTargetExtension; // packageimport
44 import org.eclipse.jface.text.IWidgetTokenOwner; // packageimport
45 import org.eclipse.jface.text.IViewportListener; // packageimport
46 import org.eclipse.jface.text.GapTextStore; // packageimport
47 import org.eclipse.jface.text.MarkSelection; // packageimport
48 import org.eclipse.jface.text.IDocumentPartitioningListenerExtension; // packageimport
49 import org.eclipse.jface.text.IDocumentAdapterExtension; // packageimport
50 import org.eclipse.jface.text.IInformationControlExtension; // packageimport
51 import org.eclipse.jface.text.IDocumentPartitioningListenerExtension2; // packageimport
52 import org.eclipse.jface.text.DefaultDocumentAdapter; // packageimport
53 import org.eclipse.jface.text.ITextViewerExtension3; // packageimport
54 import org.eclipse.jface.text.IInformationControlCreator; // packageimport
55 import org.eclipse.jface.text.TypedRegion; // packageimport
56 import org.eclipse.jface.text.ISynchronizable; // packageimport
57 import org.eclipse.jface.text.IMarkRegionTarget; // packageimport
58 import org.eclipse.jface.text.TextViewerUndoManager; // packageimport
59 import org.eclipse.jface.text.IRegion; // packageimport
60 import org.eclipse.jface.text.IInformationControlExtension2; // packageimport
61 import org.eclipse.jface.text.IDocumentExtension4; // packageimport
62 import org.eclipse.jface.text.IDocumentExtension2; // packageimport
63 import org.eclipse.jface.text.IDocumentPartitionerExtension2; // packageimport
64 import org.eclipse.jface.text.Assert; // packageimport
65 import org.eclipse.jface.text.DefaultInformationControl; // packageimport
66 import org.eclipse.jface.text.IWidgetTokenOwnerExtension; // packageimport
67 import org.eclipse.jface.text.DocumentClone; // packageimport
68 import org.eclipse.jface.text.DefaultUndoManager; // packageimport
69 import org.eclipse.jface.text.IFindReplaceTarget; // packageimport
70 import org.eclipse.jface.text.IAutoEditStrategy; // packageimport
71 import org.eclipse.jface.text.ILineTrackerExtension; // packageimport
72 import org.eclipse.jface.text.IUndoManagerExtension; // packageimport
73 import org.eclipse.jface.text.DefaultAutoIndentStrategy; // packageimport
74 import org.eclipse.jface.text.IAutoIndentStrategy; // packageimport
75 import org.eclipse.jface.text.IPainter; // packageimport
76 import org.eclipse.jface.text.IInformationControl; // packageimport
77 import org.eclipse.jface.text.IInformationControlExtension3; // packageimport
78 import org.eclipse.jface.text.ITextViewerExtension6; // packageimport
79 import org.eclipse.jface.text.IInformationControlExtension4; // packageimport
80 import org.eclipse.jface.text.DefaultLineTracker; // packageimport
81 import org.eclipse.jface.text.IDocumentInformationMappingExtension; // packageimport
82 import org.eclipse.jface.text.IRepairableDocumentExtension; // packageimport
83 import org.eclipse.jface.text.ITextHover; // packageimport
84 import org.eclipse.jface.text.FindReplaceDocumentAdapter; // packageimport
85 import org.eclipse.jface.text.ILineTracker; // packageimport
86 import org.eclipse.jface.text.Line; // packageimport
87 import org.eclipse.jface.text.ITextViewerExtension; // packageimport
88 import org.eclipse.jface.text.IDocumentAdapter; // packageimport
89 import org.eclipse.jface.text.TextEvent; // packageimport
90 import org.eclipse.jface.text.BadLocationException; // packageimport
91 import org.eclipse.jface.text.AbstractDocument; // packageimport
92 import org.eclipse.jface.text.AbstractLineTracker; // packageimport
93 import org.eclipse.jface.text.TreeLineTracker; // packageimport
94 import org.eclipse.jface.text.ITextPresentationListener; // packageimport
95 import org.eclipse.jface.text.Region; // packageimport
96 import org.eclipse.jface.text.ITextViewer; // packageimport
97 import org.eclipse.jface.text.IDocumentInformationMapping; // packageimport
98 import org.eclipse.jface.text.MarginPainter; // packageimport
99 import org.eclipse.jface.text.IPaintPositionManager; // packageimport
100 import org.eclipse.jface.text.TextPresentation; // packageimport
101 import org.eclipse.jface.text.IFindReplaceTargetExtension; // packageimport
102 import org.eclipse.jface.text.ISlaveDocumentManagerExtension; // packageimport
103 import org.eclipse.jface.text.ISelectionValidator; // packageimport
104 import org.eclipse.jface.text.IDocumentExtension; // packageimport
105 import org.eclipse.jface.text.PropagatingFontFieldEditor; // packageimport
106 import org.eclipse.jface.text.ConfigurableLineTracker; // packageimport
107 import org.eclipse.jface.text.SlaveDocumentEvent; // packageimport
108 import org.eclipse.jface.text.IDocumentListener; // packageimport
109 import org.eclipse.jface.text.PaintManager; // packageimport
110 import org.eclipse.jface.text.IFindReplaceTargetExtension3; // packageimport
111 import org.eclipse.jface.text.ITextDoubleClickStrategy; // packageimport
112 import org.eclipse.jface.text.IDocumentExtension3; // packageimport
113 import org.eclipse.jface.text.Position; // packageimport
114 import org.eclipse.jface.text.TextMessages; // packageimport
115 import org.eclipse.jface.text.CopyOnWriteTextStore; // packageimport
116 import org.eclipse.jface.text.WhitespaceCharacterPainter; // packageimport
117 import org.eclipse.jface.text.IPositionUpdater; // packageimport
118 import org.eclipse.jface.text.DefaultTextDoubleClickStrategy; // packageimport
119 import org.eclipse.jface.text.ListLineTracker; // packageimport
120 import org.eclipse.jface.text.ITextInputListener; // packageimport
121 import org.eclipse.jface.text.BadPositionCategoryException; // packageimport
122 import org.eclipse.jface.text.IWidgetTokenKeeperExtension; // packageimport
123 import org.eclipse.jface.text.IInputChangedListener; // packageimport
124 import org.eclipse.jface.text.ITextOperationTarget; // packageimport
125 import org.eclipse.jface.text.IDocumentInformationMappingExtension2; // packageimport
126 import org.eclipse.jface.text.ITextViewerExtension7; // packageimport
127 import org.eclipse.jface.text.IInformationControlExtension5; // packageimport
128 import org.eclipse.jface.text.IDocumentRewriteSessionListener; // packageimport
129 import org.eclipse.jface.text.JFaceTextUtil; // packageimport
130 import org.eclipse.jface.text.AbstractReusableInformationControlCreator; // packageimport
131 import org.eclipse.jface.text.TabsToSpacesConverter; // packageimport
132 import org.eclipse.jface.text.CursorLinePainter; // packageimport
133 import org.eclipse.jface.text.ITextHoverExtension; // packageimport
134 import org.eclipse.jface.text.IEventConsumer; // packageimport
135 import org.eclipse.jface.text.IDocument; // packageimport
136 import org.eclipse.jface.text.IWidgetTokenKeeper; // packageimport
137 import org.eclipse.jface.text.DocumentCommand; // packageimport
138 import org.eclipse.jface.text.TypedPosition; // packageimport
139 import org.eclipse.jface.text.IEditingSupportRegistry; // packageimport
140 import org.eclipse.jface.text.IDocumentPartitionerExtension; // packageimport
141 import org.eclipse.jface.text.AbstractHoverInformationControlManager; // packageimport
142 import org.eclipse.jface.text.IEditingSupport; // packageimport
143 import org.eclipse.jface.text.IMarkSelection; // packageimport
144 import org.eclipse.jface.text.ISlaveDocumentManager; // packageimport
145 import org.eclipse.jface.text.DocumentEvent; // packageimport
146 import org.eclipse.jface.text.DocumentPartitioningChangedEvent; // packageimport
147 import org.eclipse.jface.text.ITextStore; // packageimport
148 import org.eclipse.jface.text.JFaceTextMessages; // packageimport
149 import org.eclipse.jface.text.DocumentRewriteSessionEvent; // packageimport
150 import org.eclipse.jface.text.SequentialRewriteTextStore; // packageimport
151 import org.eclipse.jface.text.DocumentRewriteSessionType; // packageimport
152 import org.eclipse.jface.text.TextAttribute; // packageimport
153 import org.eclipse.jface.text.ITextViewerExtension4; // packageimport
154 import org.eclipse.jface.text.ITypedRegion; // packageimport
155
156
157 import java.lang.all;
158 import java.util.Set;
159
160
161 /**
162 * Standard implementation of {@link org.eclipse.jface.text.ITextSelection}.
163 * <p>
164 * Makes advantage of the weak contract of correctness of its interface. If
165 * generated from a selection provider, it only remembers its offset and length
166 * and computes the remaining information on request.</p>
167 */
168 public class TextSelection : ITextSelection {
169
170 /** Internal empty text selection */
171 private static ITextSelection NULL_;
172 private static ITextSelection NULL(){
173 if( NULL_ is null ){
174 synchronized( TextSelection.classinfo ){
175 if( NULL_ is null ){
176 NULL_= new TextSelection();
177 }
178 }
179 }
180 return NULL_;
181 }
182
183 /**
184 * Returns a shared instance of an empty text selection.
185 *
186 * @return a shared instance of an empty text selection
187 */
188 public static ITextSelection emptySelection() {
189 return NULL;
190 }
191
192 /** Document which delivers the data of the selection */
193 private IDocument fDocument;
194 /** Offset of the selection */
195 private int fOffset;
196 /** Length of the selection */
197 private int fLength;
198
199
200 /**
201 * Creates an empty text selection.
202 */
203 private this() {
204 this(null, -1, -1);
205 }
206
207 /**
208 * Creates a text selection for the given range. This
209 * selection object describes generically a text range and
210 * is intended to be an argument for the <code>setSelection</code>
211 * method of selection providers.
212 *
213 * @param offset the offset of the range
214 * @param length the length of the range
215 */
216 public this(int offset, int length) {
217 this(null, offset, length);
218 }
219
220 /**
221 * Creates a text selection for the given range of the given document.
222 * This selection object is created by selection providers in responds
223 * <code>getSelection</code>.
224 *
225 * @param document the document whose text range is selected in a viewer
226 * @param offset the offset of the selected range
227 * @param length the length of the selected range
228 */
229 public this(IDocument document, int offset, int length) {
230 fDocument= document;
231 fOffset= offset;
232 fLength= length;
233 }
234
235 /**
236 *
237 * Returns true if the offset and length are smaller than 0.
238 * A selection of length 0, is a valid text selection as it
239 * describes, e.g., the cursor position in a viewer.
240 *
241 * @return <code>true</code> if this selection is empty
242 * @see org.eclipse.jface.viewers.ISelection#isEmpty()
243 */
244 public bool isEmpty() {
245 return fOffset < 0 || fLength < 0;
246 }
247
248 /*
249 * @see org.eclipse.jface.text.ITextSelection#getOffset()
250 */
251 public int getOffset() {
252 return fOffset;
253 }
254
255 /*
256 * @see org.eclipse.jface.text.ITextSelection#getLength()
257 */
258 public int getLength() {
259 return fLength;
260 }
261
262 /*
263 * @see org.eclipse.jface.text.ITextSelection#getStartLine()
264 */
265 public int getStartLine() {
266
267 try {
268 if (fDocument !is null)
269 return fDocument.getLineOfOffset(fOffset);
270 } catch (BadLocationException x) {
271 }
272
273 return -1;
274 }
275
276 /*
277 * @see org.eclipse.jface.text.ITextSelection#getEndLine()
278 */
279 public int getEndLine() {
280 try {
281 if (fDocument !is null) {
282 int endOffset= fOffset + fLength;
283 if (fLength !is 0)
284 endOffset--;
285 return fDocument.getLineOfOffset(endOffset);
286 }
287 } catch (BadLocationException x) {
288 }
289
290 return -1;
291 }
292
293 /*
294 * @see org.eclipse.jface.text.ITextSelection#getText()
295 */
296 public String getText() {
297 try {
298 if (fDocument !is null)
299 return fDocument.get(fOffset, fLength);
300 } catch (BadLocationException x) {
301 }
302
303 return null;
304 }
305
306 /*
307 * @see java.lang.Object#equals(Object)
308 */
309 public override int opEquals(Object obj) {
310 if (obj is this)
311 return true;
312
313 if (obj is null || this.classinfo !is obj.classinfo)
314 return false;
315
316 TextSelection s= cast(TextSelection) obj;
317 bool sameRange= (s.fOffset is fOffset && s.fLength is fLength);
318 if (sameRange) {
319
320 if (s.fDocument is null && fDocument is null)
321 return true;
322 if (s.fDocument is null || fDocument is null)
323 return false;
324
325 try {
326 String sContent= s.fDocument.get(fOffset, fLength);
327 String content= fDocument.get(fOffset, fLength);
328 return sContent==/+eq+/content;
329 } catch (BadLocationException x) {
330 }
331 }
332
333 return false;
334 }
335
336 /*
337 * @see java.lang.Object#hashCode()
338 */
339 public override hash_t toHash() {
340 int low= fDocument !is null ? (cast(Object)fDocument).toHash() : 0;
341 return (fOffset << 24) | (fLength << 16) | low;
342 }
343 }
344