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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, 2006 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.MultiTextEdit;
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15 import org.eclipse.text.edits.CopySourceEdit; // packageimport
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16 import org.eclipse.text.edits.MoveSourceEdit; // packageimport
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17 import org.eclipse.text.edits.CopyingRangeMarker; // packageimport
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18 import org.eclipse.text.edits.ReplaceEdit; // packageimport
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19 import org.eclipse.text.edits.EditDocument; // packageimport
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20 import org.eclipse.text.edits.UndoCollector; // packageimport
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21 import org.eclipse.text.edits.DeleteEdit; // packageimport
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22 import org.eclipse.text.edits.MoveTargetEdit; // packageimport
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23 import org.eclipse.text.edits.CopyTargetEdit; // packageimport
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24 import org.eclipse.text.edits.TextEditCopier; // packageimport
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25 import org.eclipse.text.edits.ISourceModifier; // packageimport
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26 import org.eclipse.text.edits.TextEditMessages; // packageimport
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27 import org.eclipse.text.edits.TextEditProcessor; // packageimport
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28 import org.eclipse.text.edits.MalformedTreeException; // packageimport
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29 import org.eclipse.text.edits.TreeIterationInfo; // packageimport
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30 import org.eclipse.text.edits.TextEditVisitor; // packageimport
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31 import org.eclipse.text.edits.TextEditGroup; // packageimport
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32 import org.eclipse.text.edits.TextEdit; // packageimport
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33 import org.eclipse.text.edits.RangeMarker; // packageimport
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34 import org.eclipse.text.edits.UndoEdit; // packageimport
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35 import org.eclipse.text.edits.InsertEdit; // packageimport
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36
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37 import java.lang.all;
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38 import java.util.List;
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39 import java.util.Set;
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40
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41 import org.eclipse.core.runtime.Assert;
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42 import org.eclipse.jface.text.BadLocationException;
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43 import org.eclipse.jface.text.IDocument;
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44 import org.eclipse.jface.text.IRegion;
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45
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46 /**
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47 * A multi-text edit can be used to aggregate several edits into
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48 * one edit. The edit itself doesn't modify a document.
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49 * <p>
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50 * Clients are allowed to implement subclasses of a multi-text
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51 * edit.Subclasses must implement <code>doCopy()</code> to ensure
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52 * the a copy of the right type is created. Not implementing
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53 * <code>doCopy()</code> in subclasses will result in an assertion
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54 * failure during copying.
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55 *
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56 * @since 3.0
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57 */
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58 public class MultiTextEdit : TextEdit {
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59
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60 private bool fDefined;
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61
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62 /**
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63 * Creates a new <code>MultiTextEdit</code>. The range
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64 * of the edit is determined by the range of its children.
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65 *
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66 * Adding this edit to a parent edit sets its range to the
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67 * range covered by its children. If the edit doesn't have
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68 * any children its offset is set to the parent's offset
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69 * and its length is set to 0.
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70 */
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71 public this() {
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72 super(0, Integer.MAX_VALUE);
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73 fDefined= false;
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74 }
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75
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76 /**
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77 * Creates a new </code>MultiTextEdit</code> for the given
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78 * range. Adding a child to this edit which isn't covered
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79 * by the given range will result in an exception.
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80 *
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81 * @param offset the edit's offset
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82 * @param length the edit's length.
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83 * @see TextEdit#addChild(TextEdit)
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84 * @see TextEdit#addChildren(TextEdit[])
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85 */
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86 public this(int offset, int length) {
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87 super(offset, length);
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88 fDefined= true;
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89 }
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90
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91 /*
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92 * Copy constructor.
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93 */
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94 protected this(MultiTextEdit other) {
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95 super(other);
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96 }
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97
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98 /**
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99 * Checks the edit's integrity.
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100 * <p>
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101 * Note that this method <b>should only be called</b> by the edit
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102 * framework and not by normal clients.</p>
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103 *<p>
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104 * This default implementation does nothing. Subclasses may override
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105 * if needed.</p>
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106 *
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107 * @exception MalformedTreeException if the edit isn't in a valid state
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108 * and can therefore not be executed
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109 */
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110 protected void checkIntegrity() {
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111 // does nothing
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112 }
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113
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114 /**
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115 * {@inheritDoc}
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116 */
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117 final bool isDefined() {
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118 if (fDefined)
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119 return true;
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120 return hasChildren();
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121 }
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122
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123 /**
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124 * {@inheritDoc}
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125 */
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126 public final int getOffset() {
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127 if (fDefined)
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128 return super.getOffset();
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129
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130 List/*<TextEdit>*/ children= internalGetChildren();
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131 if (children is null || children.size() is 0)
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132 return 0;
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133 // the children are already sorted
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134 return (cast(TextEdit)children.get(0)).getOffset();
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135 }
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136
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137 /**
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138 * {@inheritDoc}
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139 */
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140 public final int getLength() {
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141 if (fDefined)
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142 return super.getLength();
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143
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144 List/*<TextEdit>*/ children= internalGetChildren();
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145 if (children is null || children.size() is 0)
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146 return 0;
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147 // the children are already sorted
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148 TextEdit first= cast(TextEdit)children.get(0);
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149 TextEdit last= cast(TextEdit)children.get(children.size() - 1);
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150 return last.getOffset() - first.getOffset() + last.getLength();
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151 }
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152
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153 /**
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154 * {@inheritDoc}
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155 */
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156 public final bool covers(TextEdit other) {
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157 if (fDefined)
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158 return super.covers(other);
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159 // an undefined multiple text edit covers everything
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160 return true;
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161 }
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162
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163 /*
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164 * @see org.eclipse.text.edits.TextEdit#canZeroLengthCover()
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165 */
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166 protected bool canZeroLengthCover() {
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167 return true;
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168 }
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169
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170 /*
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171 * @see TextEdit#copy
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172 */
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173 protected TextEdit doCopy() {
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174 Assert.isTrue(MultiTextEdit.classinfo is this.classinfo, "Subclasses must reimplement copy0"); //$NON-NLS-1$
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175 return new MultiTextEdit(this);
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176 }
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177
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178 /*
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179 * @see TextEdit#accept0
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180 */
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181 protected void accept0(TextEditVisitor visitor) {
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182 bool visitChildren= visitor.visit(this);
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183 if (visitChildren) {
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184 acceptChildren(visitor);
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185 }
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186 }
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187
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188 /*
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189 * @see org.eclipse.text.edits.TextEdit#adjustOffset(int)
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190 * @since 3.1
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191 */
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192 void adjustOffset(int delta) {
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193 if (fDefined)
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194 super.adjustOffset(delta);
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195 }
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196
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197 /*
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198 * @see org.eclipse.text.edits.TextEdit#adjustLength(int)
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199 * @since 3.1
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200 */
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201 void adjustLength(int delta) {
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202 if (fDefined)
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203 super.adjustLength(delta);
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204 }
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205
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206 /*
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207 * @see TextEdit#performConsistencyCheck
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208 */
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209 void performConsistencyCheck(TextEditProcessor processor, IDocument document) {
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210 checkIntegrity();
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211 }
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212
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213 /*
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214 * @see TextEdit#performDocumentUpdating
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215 */
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216 int performDocumentUpdating(IDocument document) {
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217 fDelta= 0;
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218 return fDelta;
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219 }
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220
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221 /*
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222 * @see TextEdit#deleteChildren
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223 */
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224 bool deleteChildren() {
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225 return false;
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226 }
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227
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228 void aboutToBeAdded(TextEdit parent) {
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229 defineRegion(parent.getOffset());
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230 }
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231
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232 void defineRegion(int parentOffset) {
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233 if (fDefined)
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234 return;
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235 if (hasChildren()) {
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236 IRegion region= getCoverage(getChildren());
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237 internalSetOffset(region.getOffset());
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238 internalSetLength(region.getLength());
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239 } else {
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240 internalSetOffset(parentOffset);
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241 internalSetLength(0);
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242 }
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243 fDefined= true;
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244 }
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245
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246 /*
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247 * @see org.eclipse.text.edits.TextEdit#internalToString(java.lang.StringBuffer, int)
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248 * @since 3.3
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249 */
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250 void internalToString(StringBuffer buffer, int indent) {
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251 super.internalToString(buffer, indent);
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252 if (! fDefined)
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253 buffer.append(" [undefined]"); //$NON-NLS-1$
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254 }
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255 }