Mercurial > projects > dwt2
comparison org.eclipse.text/src/org/eclipse/text/edits/MoveTargetEdit.d @ 12:bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
author | Frank Benoit <benoit@tionex.de> |
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date | Sat, 14 Mar 2009 18:23:29 +0100 |
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children | 5feec68b4556 |
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11:43904fec5dca | 12:bc29606a740c |
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1 /******************************************************************************* | |
2 * Copyright (c) 2000, 2006 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.MoveTargetEdit; | |
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.CopyTargetEdit; // packageimport | |
24 import org.eclipse.text.edits.TextEditCopier; // packageimport | |
25 import org.eclipse.text.edits.ISourceModifier; // packageimport | |
26 import org.eclipse.text.edits.TextEditMessages; // packageimport | |
27 import org.eclipse.text.edits.TextEditProcessor; // packageimport | |
28 import org.eclipse.text.edits.MalformedTreeException; // packageimport | |
29 import org.eclipse.text.edits.TreeIterationInfo; // packageimport | |
30 import org.eclipse.text.edits.TextEditVisitor; // packageimport | |
31 import org.eclipse.text.edits.TextEditGroup; // packageimport | |
32 import org.eclipse.text.edits.TextEdit; // packageimport | |
33 import org.eclipse.text.edits.RangeMarker; // packageimport | |
34 import org.eclipse.text.edits.UndoEdit; // 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 * A move target edit denotes the target of a move operation. Move | |
50 * target edits are only valid inside an edit tree if they have a | |
51 * corresponding source edit. Furthermore a target edit can't | |
52 * can't be a direct or indirect child of its associated source edit. | |
53 * Violating one of two requirements will result in a <code> | |
54 * MalformedTreeException</code> when executing the edit tree. | |
55 * <p> | |
56 * Move target edits can't be used as a parent for other edits. | |
57 * Trying to add an edit to a move target edit results in a <code> | |
58 * MalformedTreeException</code> as well. | |
59 * | |
60 * @see org.eclipse.text.edits.MoveSourceEdit | |
61 * @see org.eclipse.text.edits.CopyTargetEdit | |
62 * | |
63 * @since 3.0 | |
64 */ | |
65 public final class MoveTargetEdit : TextEdit { | |
66 | |
67 private MoveSourceEdit fSource; | |
68 | |
69 /** | |
70 * Constructs a new move target edit | |
71 * | |
72 * @param offset the edit's offset | |
73 */ | |
74 public this(int offset) { | |
75 super(offset, 0); | |
76 } | |
77 | |
78 /** | |
79 * Constructs an new move target edit | |
80 * | |
81 * @param offset the edit's offset | |
82 * @param source the corresponding source edit | |
83 */ | |
84 public this(int offset, MoveSourceEdit source) { | |
85 this(offset); | |
86 setSourceEdit(source); | |
87 } | |
88 | |
89 /* | |
90 * Copy constructor | |
91 */ | |
92 private this(MoveTargetEdit other) { | |
93 super(other); | |
94 } | |
95 | |
96 /** | |
97 * Returns the associated source edit or <code>null</code> | |
98 * if no source edit is associated yet. | |
99 * | |
100 * @return the source edit or <code>null</code> | |
101 */ | |
102 public MoveSourceEdit getSourceEdit() { | |
103 return fSource; | |
104 } | |
105 | |
106 /** | |
107 * Sets the source edit. | |
108 * | |
109 * @param edit the source edit | |
110 * | |
111 * @exception MalformedTreeException is thrown if the target edit | |
112 * is a direct or indirect child of the source edit | |
113 */ | |
114 public void setSourceEdit(MoveSourceEdit edit) { | |
115 if (fSource !is edit) { | |
116 fSource= edit; | |
117 fSource.setTargetEdit(this); | |
118 TextEdit parent= getParent(); | |
119 while (parent !is null) { | |
120 if (parent is fSource) | |
121 throw new MalformedTreeException(parent, this, TextEditMessages.getString("MoveTargetEdit.wrong_parent")); //$NON-NLS-1$ | |
122 parent= parent.getParent(); | |
123 } | |
124 } | |
125 } | |
126 | |
127 /* | |
128 * @see TextEdit#doCopy | |
129 */ | |
130 protected TextEdit doCopy() { | |
131 return new MoveTargetEdit(this); | |
132 } | |
133 | |
134 /* | |
135 * @see TextEdit#postProcessCopy | |
136 */ | |
137 protected void postProcessCopy(TextEditCopier copier) { | |
138 if (fSource !is null) { | |
139 MoveTargetEdit target= cast(MoveTargetEdit)copier.getCopy(this); | |
140 MoveSourceEdit source= cast(MoveSourceEdit)copier.getCopy(fSource); | |
141 if (target !is null && source !is null) | |
142 target.setSourceEdit(source); | |
143 } | |
144 } | |
145 | |
146 /* | |
147 * @see TextEdit#accept0 | |
148 */ | |
149 protected void accept0(TextEditVisitor visitor) { | |
150 bool visitChildren= visitor.visit(this); | |
151 if (visitChildren) { | |
152 acceptChildren(visitor); | |
153 } | |
154 } | |
155 | |
156 //---- consistency check ---------------------------------------------------------- | |
157 | |
158 /* | |
159 * @see TextEdit#traverseConsistencyCheck | |
160 */ | |
161 int traverseConsistencyCheck(TextEditProcessor processor, IDocument document, List sourceEdits) { | |
162 return super.traverseConsistencyCheck(processor, document, sourceEdits) + 1; | |
163 } | |
164 | |
165 /* | |
166 * @see TextEdit#performConsistencyCheck | |
167 */ | |
168 void performConsistencyCheck(TextEditProcessor processor, IDocument document) { | |
169 if (fSource is null) | |
170 throw new MalformedTreeException(getParent(), this, TextEditMessages.getString("MoveTargetEdit.no_source")); //$NON-NLS-1$ | |
171 if (fSource.getTargetEdit() !is this) | |
172 throw new MalformedTreeException(getParent(), this, TextEditMessages.getString("MoveTargetEdit.different_target")); //$NON-NLS-1$ | |
173 } | |
174 | |
175 //---- document updating ---------------------------------------------------------------- | |
176 | |
177 /* | |
178 * @see TextEdit#performDocumentUpdating | |
179 */ | |
180 int performDocumentUpdating(IDocument document) { | |
181 String source= fSource.getContent(); | |
182 document.replace(getOffset(), getLength(), source); | |
183 fDelta= source.length() - getLength(); | |
184 | |
185 MultiTextEdit sourceRoot= fSource.getSourceRoot(); | |
186 if (sourceRoot !is null) { | |
187 sourceRoot.internalMoveTree(getOffset()); | |
188 TextEdit[] sourceChildren= sourceRoot.removeChildren(); | |
189 List children= new ArrayList(sourceChildren.length); | |
190 for (int i= 0; i < sourceChildren.length; i++) { | |
191 TextEdit child= sourceChildren[i]; | |
192 child.internalSetParent(this); | |
193 children.add(child); | |
194 } | |
195 internalSetChildren(children); | |
196 } | |
197 fSource.clearContent(); | |
198 return fDelta; | |
199 } | |
200 | |
201 //---- region updating -------------------------------------------------------------- | |
202 | |
203 /* | |
204 * @see org.eclipse.text.edits.TextEdit#traversePassThree | |
205 */ | |
206 int traverseRegionUpdating(TextEditProcessor processor, IDocument document, int accumulatedDelta, bool delete_) { | |
207 // the children got already updated / normalized while they got removed | |
208 // from the source edit. So we only have to adjust the offset computed to | |
209 // far. | |
210 if (delete_) { | |
211 deleteTree(); | |
212 } else { | |
213 internalMoveTree(accumulatedDelta); | |
214 } | |
215 return accumulatedDelta + fDelta; | |
216 } | |
217 | |
218 bool deleteChildren() { | |
219 return false; | |
220 } | |
221 } |