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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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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2008 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module org.eclipse.text.edits.UndoEdit;
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15 import org.eclipse.text.edits.MultiTextEdit; // packageimport
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16 import org.eclipse.text.edits.CopySourceEdit; // packageimport
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17 import org.eclipse.text.edits.MoveSourceEdit; // packageimport
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18 import org.eclipse.text.edits.CopyingRangeMarker; // packageimport
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19 import org.eclipse.text.edits.ReplaceEdit; // packageimport
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20 import org.eclipse.text.edits.EditDocument; // packageimport
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21 import org.eclipse.text.edits.UndoCollector; // packageimport
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22 import org.eclipse.text.edits.DeleteEdit; // packageimport
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23 import org.eclipse.text.edits.MoveTargetEdit; // packageimport
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24 import org.eclipse.text.edits.CopyTargetEdit; // packageimport
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25 import org.eclipse.text.edits.TextEditCopier; // packageimport
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26 import org.eclipse.text.edits.ISourceModifier; // packageimport
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27 import org.eclipse.text.edits.TextEditMessages; // packageimport
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28 import org.eclipse.text.edits.TextEditProcessor; // packageimport
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29 import org.eclipse.text.edits.MalformedTreeException; // packageimport
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30 import org.eclipse.text.edits.TreeIterationInfo; // packageimport
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31 import org.eclipse.text.edits.TextEditVisitor; // packageimport
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32 import org.eclipse.text.edits.TextEditGroup; // packageimport
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33 import org.eclipse.text.edits.TextEdit; // packageimport
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34 import org.eclipse.text.edits.RangeMarker; // packageimport
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35 import org.eclipse.text.edits.InsertEdit; // packageimport
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36
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37
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38 import java.lang.all;
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39 import java.util.List;
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40 import java.util.ArrayList;
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41 import java.util.Set;
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43
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44
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45 import org.eclipse.jface.text.BadLocationException;
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46 import org.eclipse.jface.text.IDocument;
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47
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48
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49 /**
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50 * This class encapsulates the reverse changes of an executed text
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51 * edit tree. To apply an undo memento to a document use method
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52 * <code>apply(IDocument)</code>.
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53 * <p>
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54 * Clients can't add additional children to an undo edit nor can they
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55 * add an undo edit as a child to another edit. Doing so results in
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56 * both cases in a <code>MalformedTreeException<code>.
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57 *
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58 * @since 3.0
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59 * @noinstantiate This class is not intended to be instantiated by clients.
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60 */
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61 public final class UndoEdit : TextEdit {
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62
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63 this() {
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64 super(0, Integer.MAX_VALUE);
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65 }
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66
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67 private this(UndoEdit other) {
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68 super(other);
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69 }
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70
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71 /*
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72 * @see org.eclipse.text.edits.TextEdit#internalAdd(org.eclipse.text.edits.TextEdit)
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73 */
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74 void internalAdd(TextEdit child) {
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75 throw new MalformedTreeException(null, this, TextEditMessages.getString("UndoEdit.no_children")); //$NON-NLS-1$
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76 }
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77
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78 /*
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79 * @see org.eclipse.text.edits.MultiTextEdit#aboutToBeAdded(org.eclipse.text.edits.TextEdit)
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80 */
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81 void aboutToBeAdded(TextEdit parent) {
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82 throw new MalformedTreeException(parent, this, TextEditMessages.getString("UndoEdit.can_not_be_added")); //$NON-NLS-1$
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83 }
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84
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85 UndoEdit dispatchPerformEdits(TextEditProcessor processor) {
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86 return processor.executeUndo();
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87 }
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88
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89 void dispatchCheckIntegrity(TextEditProcessor processor) {
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90 processor.checkIntegrityUndo();
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91 }
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92
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93 /*
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94 * @see org.eclipse.text.edits.TextEdit#doCopy()
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95 */
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96 protected TextEdit doCopy() {
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97 return new UndoEdit(this);
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98 }
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99
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100 /*
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101 * @see TextEdit#accept0
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102 */
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103 protected void accept0(TextEditVisitor visitor) {
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104 bool visitChildren= visitor.visit(this);
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105 if (visitChildren) {
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106 acceptChildren(visitor);
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107 }
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108 }
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109
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110 /*
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111 * @see TextEdit#performDocumentUpdating
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112 */
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113 int performDocumentUpdating(IDocument document) {
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114 fDelta= 0;
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115 return fDelta;
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116 }
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117
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118 void add(ReplaceEdit edit) {
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119 List children= internalGetChildren();
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120 if (children is null) {
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121 children= new ArrayList(2);
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122 internalSetChildren(children);
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123 }
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124 children.add(edit);
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125 }
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126
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127 void defineRegion(int offset, int length) {
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128 internalSetOffset(offset);
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129 internalSetLength(length);
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130 }
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131
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132 bool deleteChildren() {
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133 return false;
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134 }
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135 }
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136