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comparison org.eclipse.text/src/org/eclipse/text/edits/CopyTargetEdit.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, 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.CopyTargetEdit;
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.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.Set;
41
42
43 import org.eclipse.core.runtime.Assert;
44 import org.eclipse.jface.text.BadLocationException;
45 import org.eclipse.jface.text.IDocument;
46
47 /**
48 * A copy target edit denotes the target of a copy operation. Copy
49 * target edits are only valid inside an edit tree if they have a
50 * corresponding source edit. Furthermore a target edit can't
51 * can't be a direct or indirect child of the associated source edit.
52 * Violating one of two requirements will result in a <code>
53 * MalformedTreeException</code> when executing the edit tree.
54 * <p>
55 * Copy target edits can't be used as a parent for other edits.
56 * Trying to add an edit to a copy target edit results in a <code>
57 * MalformedTreeException</code> as well.
58 *
59 * @see org.eclipse.text.edits.CopySourceEdit
60 *
61 * @since 3.0
62 */
63 public final class CopyTargetEdit : TextEdit {
64
65 private CopySourceEdit fSource;
66
67 /**
68 * Constructs a new copy target edit
69 *
70 * @param offset the edit's offset
71 */
72 public this(int offset) {
73 super(offset, 0);
74 }
75
76 /**
77 * Constructs an new copy target edit
78 *
79 * @param offset the edit's offset
80 * @param source the corresponding source edit
81 */
82 public this(int offset, CopySourceEdit source) {
83 this(offset);
84 setSourceEdit(source);
85 }
86
87 /*
88 * Copy constructor
89 */
90 private this(CopyTargetEdit other) {
91 super(other);
92 }
93
94 /**
95 * Returns the associated source edit or <code>null</code>
96 * if no source edit is associated yet.
97 *
98 * @return the source edit or <code>null</code>
99 */
100 public CopySourceEdit getSourceEdit() {
101 return fSource;
102 }
103
104 /**
105 * Sets the source edit.
106 *
107 * @param edit the source edit
108 *
109 * @exception MalformedTreeException is thrown if the target edit
110 * is a direct or indirect child of the source edit
111 */
112 public void setSourceEdit(CopySourceEdit edit) {
113 Assert.isNotNull(edit);
114 if (fSource !is edit) {
115 fSource= edit;
116 fSource.setTargetEdit(this);
117 TextEdit parent= getParent();
118 while (parent !is null) {
119 if (parent is fSource)
120 throw new MalformedTreeException(parent, this, TextEditMessages.getString("CopyTargetEdit.wrong_parent")); //$NON-NLS-1$
121 parent= parent.getParent();
122 }
123 }
124 }
125
126 /*
127 * @see TextEdit#doCopy
128 */
129 protected TextEdit doCopy() {
130 return new CopyTargetEdit(this);
131 }
132
133 /*
134 * @see TextEdit#postProcessCopy
135 */
136 protected void postProcessCopy(TextEditCopier copier) {
137 if (fSource !is null) {
138 CopyTargetEdit target= cast(CopyTargetEdit)copier.getCopy(this);
139 CopySourceEdit source= cast(CopySourceEdit)copier.getCopy(fSource);
140 if (target !is null && source !is null)
141 target.setSourceEdit(source);
142 }
143 }
144
145 /*
146 * @see TextEdit#accept0
147 */
148 protected void accept0(TextEditVisitor visitor) {
149 bool visitChildren= visitor.visit(this);
150 if (visitChildren) {
151 acceptChildren(visitor);
152 }
153 }
154
155 /*
156 * @see TextEdit#traverseConsistencyCheck
157 */
158 int traverseConsistencyCheck(TextEditProcessor processor, IDocument document, List sourceEdits) {
159 return super.traverseConsistencyCheck(processor, document, sourceEdits) + 1;
160 }
161
162 /*
163 * @see TextEdit#performConsistencyCheck
164 */
165 void performConsistencyCheck(TextEditProcessor processor, IDocument document) {
166 if (fSource is null)
167 throw new MalformedTreeException(getParent(), this, TextEditMessages.getString("CopyTargetEdit.no_source")); //$NON-NLS-1$
168 if (fSource.getTargetEdit() !is this)
169 throw new MalformedTreeException(getParent(), this, TextEditMessages.getString("CopyTargetEdit.different_target")); //$NON-NLS-1$
170 }
171
172 /*
173 * @see TextEdit#performDocumentUpdating
174 */
175 int performDocumentUpdating(IDocument document) {
176 String source= fSource.getContent();
177 document.replace(getOffset(), getLength(), source);
178 fDelta= source.length() - getLength();
179 fSource.clearContent();
180 return fDelta;
181 }
182
183 /*
184 * @see TextEdit#deleteChildren
185 */
186 bool deleteChildren() {
187 return false;
188 }
189 }