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comparison org.eclipse.text/src/org/eclipse/text/edits/UndoEdit.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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children 5feec68b4556
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11:43904fec5dca 12:bc29606a740c
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 org.eclipse.text.edits.UndoEdit;
14
15 import org.eclipse.text.edits.MultiTextEdit; // packageimport
16 import org.eclipse.text.edits.CopySourceEdit; // packageimport
17 import org.eclipse.text.edits.MoveSourceEdit; // packageimport
18 import org.eclipse.text.edits.CopyingRangeMarker; // packageimport
19 import org.eclipse.text.edits.ReplaceEdit; // packageimport
20 import org.eclipse.text.edits.EditDocument; // packageimport
21 import org.eclipse.text.edits.UndoCollector; // packageimport
22 import org.eclipse.text.edits.DeleteEdit; // packageimport
23 import org.eclipse.text.edits.MoveTargetEdit; // packageimport
24 import org.eclipse.text.edits.CopyTargetEdit; // packageimport
25 import org.eclipse.text.edits.TextEditCopier; // packageimport
26 import org.eclipse.text.edits.ISourceModifier; // packageimport
27 import org.eclipse.text.edits.TextEditMessages; // packageimport
28 import org.eclipse.text.edits.TextEditProcessor; // packageimport
29 import org.eclipse.text.edits.MalformedTreeException; // packageimport
30 import org.eclipse.text.edits.TreeIterationInfo; // packageimport
31 import org.eclipse.text.edits.TextEditVisitor; // packageimport
32 import org.eclipse.text.edits.TextEditGroup; // packageimport
33 import org.eclipse.text.edits.TextEdit; // packageimport
34 import org.eclipse.text.edits.RangeMarker; // packageimport
35 import org.eclipse.text.edits.InsertEdit; // packageimport
36
37
38 import java.lang.all;
39 import java.util.List;
40 import java.util.ArrayList;
41 import java.util.Set;
42
43
44
45 import org.eclipse.jface.text.BadLocationException;
46 import org.eclipse.jface.text.IDocument;
47
48
49 /**
50 * This class encapsulates the reverse changes of an executed text
51 * edit tree. To apply an undo memento to a document use method
52 * <code>apply(IDocument)</code>.
53 * <p>
54 * Clients can't add additional children to an undo edit nor can they
55 * add an undo edit as a child to another edit. Doing so results in
56 * both cases in a <code>MalformedTreeException<code>.
57 *
58 * @since 3.0
59 * @noinstantiate This class is not intended to be instantiated by clients.
60 */
61 public final class UndoEdit : TextEdit {
62
63 this() {
64 super(0, Integer.MAX_VALUE);
65 }
66
67 private this(UndoEdit other) {
68 super(other);
69 }
70
71 /*
72 * @see org.eclipse.text.edits.TextEdit#internalAdd(org.eclipse.text.edits.TextEdit)
73 */
74 void internalAdd(TextEdit child) {
75 throw new MalformedTreeException(null, this, TextEditMessages.getString("UndoEdit.no_children")); //$NON-NLS-1$
76 }
77
78 /*
79 * @see org.eclipse.text.edits.MultiTextEdit#aboutToBeAdded(org.eclipse.text.edits.TextEdit)
80 */
81 void aboutToBeAdded(TextEdit parent) {
82 throw new MalformedTreeException(parent, this, TextEditMessages.getString("UndoEdit.can_not_be_added")); //$NON-NLS-1$
83 }
84
85 UndoEdit dispatchPerformEdits(TextEditProcessor processor) {
86 return processor.executeUndo();
87 }
88
89 void dispatchCheckIntegrity(TextEditProcessor processor) {
90 processor.checkIntegrityUndo();
91 }
92
93 /*
94 * @see org.eclipse.text.edits.TextEdit#doCopy()
95 */
96 protected TextEdit doCopy() {
97 return new UndoEdit(this);
98 }
99
100 /*
101 * @see TextEdit#accept0
102 */
103 protected void accept0(TextEditVisitor visitor) {
104 bool visitChildren= visitor.visit(this);
105 if (visitChildren) {
106 acceptChildren(visitor);
107 }
108 }
109
110 /*
111 * @see TextEdit#performDocumentUpdating
112 */
113 int performDocumentUpdating(IDocument document) {
114 fDelta= 0;
115 return fDelta;
116 }
117
118 void add(ReplaceEdit edit) {
119 List children= internalGetChildren();
120 if (children is null) {
121 children= new ArrayList(2);
122 internalSetChildren(children);
123 }
124 children.add(edit);
125 }
126
127 void defineRegion(int offset, int length) {
128 internalSetOffset(offset);
129 internalSetLength(length);
130 }
131
132 bool deleteChildren() {
133 return false;
134 }
135 }
136