Mercurial > projects > dwt-addons
annotate dwtx/jface/text/link/InclusivePositionUpdater.d @ 146:75302ef3f92f
final
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Sun, 24 Aug 2008 22:34:04 +0200 |
| parents | 26688fec6d23 |
| children |
| 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.link.InclusivePositionUpdater; | |
| 14 | |
| 131 | 15 import dwtx.jface.text.link.LinkedModeModel; // packageimport |
| 16 import dwtx.jface.text.link.LinkedPosition; // packageimport | |
| 17 import dwtx.jface.text.link.ILinkedModeListener; // packageimport | |
| 18 import dwtx.jface.text.link.TabStopIterator; // packageimport | |
| 19 import dwtx.jface.text.link.LinkedModeUI; // packageimport | |
| 20 import dwtx.jface.text.link.LinkedPositionGroup; // packageimport | |
| 21 import dwtx.jface.text.link.LinkedModeManager; // packageimport | |
| 22 import dwtx.jface.text.link.LinkedPositionAnnotations; // packageimport | |
| 23 import dwtx.jface.text.link.ProposalPosition; // packageimport | |
| 24 | |
| 25 | |
| 129 | 26 import dwt.dwthelper.utils; |
| 27 | |
| 28 import dwtx.jface.text.BadPositionCategoryException; | |
| 29 import dwtx.jface.text.DocumentEvent; | |
| 30 import dwtx.jface.text.IPositionUpdater; | |
| 31 import dwtx.jface.text.Position; | |
| 32 | |
| 33 | |
| 34 /** | |
| 35 * Position updater that considers any change in | |
| 36 * <code>[p.offset, p.offset + p.length]</code> of a {@link Position} | |
| 37 * <code>p</code> as belonging to the position. | |
| 38 * <p> | |
| 39 * Internal class. Do not use. Public for testing purposes only. | |
| 40 * </p> | |
| 41 * | |
| 42 * @since 3.0 | |
| 43 * @noinstantiate This class is not intended to be instantiated by clients. | |
| 44 * @noextend This class is not intended to be subclassed by clients. | |
| 45 */ | |
| 46 public class InclusivePositionUpdater : IPositionUpdater { | |
| 47 | |
| 48 /** The position category. */ | |
| 146 | 49 private const String fCategory; |
| 129 | 50 |
| 51 /** | |
| 52 * Creates a new updater for the given <code>category</code>. | |
| 53 * | |
| 54 * @param category the new category. | |
| 55 */ | |
|
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7d818bd32d63
Fix ctors to this with gvim regexp
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parents:
131
diff
changeset
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56 public this(String category) { |
| 129 | 57 fCategory= category; |
| 58 } | |
| 59 | |
| 60 /* | |
| 61 * @see dwtx.jface.text.IPositionUpdater#update(dwtx.jface.text.DocumentEvent) | |
| 62 */ | |
| 63 public void update(DocumentEvent event) { | |
| 64 | |
| 65 int eventOffset= event.getOffset(); | |
| 66 int eventOldLength= event.getLength(); | |
| 67 int eventNewLength= event.getText() is null ? 0 : event.getText().length(); | |
| 68 int deltaLength= eventNewLength - eventOldLength; | |
| 69 | |
| 70 try { | |
| 71 Position[] positions= event.getDocument().getPositions(fCategory); | |
| 72 | |
| 73 for (int i= 0; i !is positions.length; i++) { | |
| 74 | |
| 75 Position position= positions[i]; | |
| 76 | |
| 77 if (position.isDeleted()) | |
| 78 continue; | |
| 79 | |
| 80 int offset= position.getOffset(); | |
| 81 int length= position.getLength(); | |
| 82 int end= offset + length; | |
| 83 | |
| 84 if (offset > eventOffset + eventOldLength) | |
| 85 // position comes way | |
| 86 // after change - shift | |
| 87 position.setOffset(offset + deltaLength); | |
| 88 else if (end < eventOffset) { | |
| 89 // position comes way before change - | |
| 90 // leave alone | |
| 91 } else if (offset <= eventOffset && end >= eventOffset + eventOldLength) { | |
| 92 // event completely internal to the position - adjust length | |
| 93 position.setLength(length + deltaLength); | |
| 94 } else if (offset < eventOffset) { | |
| 95 // event extends over end of position - adjust length | |
| 96 int newEnd= eventOffset + eventNewLength; | |
| 97 position.setLength(newEnd - offset); | |
| 98 } else if (end > eventOffset + eventOldLength) { | |
| 99 // event extends from before position into it - adjust offset | |
| 100 // and length | |
| 101 // offset becomes end of event, length adjusted accordingly | |
| 102 // we want to recycle the overlapping part | |
| 103 position.setOffset(eventOffset); | |
| 104 int deleted= eventOffset + eventOldLength - offset; | |
| 105 position.setLength(length - deleted + eventNewLength); | |
| 106 } else { | |
| 107 // event consumes the position - delete it | |
|
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26688fec6d23
Following dsss compile errors
Frank Benoit <benoit@tionex.de>
parents:
133
diff
changeset
|
108 position.delete_(); |
| 129 | 109 } |
| 110 } | |
| 111 } catch (BadPositionCategoryException e) { | |
| 112 // ignore and return | |
| 113 } | |
| 114 } | |
| 115 | |
| 116 /** | |
| 117 * Returns the position category. | |
| 118 * | |
| 119 * @return the position category | |
| 120 */ | |
| 121 public String getCategory() { | |
| 122 return fCategory; | |
| 123 } | |
| 124 | |
| 125 } |