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annotate org.eclipse.text/src/org/eclipse/jface/text/projection/SegmentUpdater.d @ 14:5feec68b4556

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First run of automatic package imports
author Frank Benoit <benoit@tionex.de>
date Sat, 14 Mar 2009 18:41:58 +0100
parents bc29606a740c
children
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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.jface.text.projection.SegmentUpdater;
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14 import org.eclipse.jface.text.projection.ChildDocumentManager;
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15 import org.eclipse.jface.text.projection.IMinimalMapping;
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16 import org.eclipse.jface.text.projection.Segment;
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17 import org.eclipse.jface.text.projection.ChildDocument;
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18 import org.eclipse.jface.text.projection.ProjectionMapping;
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19 import org.eclipse.jface.text.projection.FragmentUpdater;
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20 import org.eclipse.jface.text.projection.ProjectionDocumentEvent;
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21 import org.eclipse.jface.text.projection.ProjectionTextStore;
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22 import org.eclipse.jface.text.projection.ProjectionDocumentManager;
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23 import org.eclipse.jface.text.projection.Fragment;
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24 import org.eclipse.jface.text.projection.ProjectionDocument;
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28 import java.lang.all;
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29 import java.util.Set;
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33 import org.eclipse.core.runtime.Assert;
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34 import org.eclipse.jface.text.BadPositionCategoryException;
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35 import org.eclipse.jface.text.DefaultPositionUpdater;
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36 import org.eclipse.jface.text.DocumentEvent;
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37 import org.eclipse.jface.text.Position;
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40 /**
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41 * The position updater used to adapt the segments of a projection document to
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42 * changes of the master document. Depending on the flags set on a segment, a
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43 * segment is either extended to shifted if an insertion happens at a segment's
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44 * offset. The last segment is extended if an insert operation happens at the
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45 * end of the segment.
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46 *
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47 * @since 3.0
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48 */
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49 class SegmentUpdater : DefaultPositionUpdater {
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50
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51 private Segment fNextSegment= null;
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52 private bool fIsProjectionChange= false;
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53
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54 /**
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55 * Creates the segment updater for the given category.
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56 *
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57 * @param segmentCategory the position category used for managing the segments of a projection document
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58 */
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59 /+protected+/ this(String segmentCategory) {
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60 super(segmentCategory);
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61 }
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63 /*
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64 * @see org.eclipse.jface.text.IPositionUpdater#update(org.eclipse.jface.text.DocumentEvent)
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65 */
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66 public void update(DocumentEvent event) {
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67
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68 Assert.isTrue( null !is cast(ProjectionDocumentEvent)event );
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69 fIsProjectionChange= (cast(ProjectionDocumentEvent) event).getChangeType() is ProjectionDocumentEvent.PROJECTION_CHANGE;
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70
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71 try {
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72
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73 Position[] category= event.getDocument().getPositions(getCategory());
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74
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75 fOffset= event.getOffset();
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76 fLength= event.getLength();
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77 fReplaceLength= (event.getText() is null ? 0 : event.getText().length());
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78 fDocument= event.getDocument();
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79
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80 for (int i= 0; i < category.length; i++) {
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81
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82 fPosition= category[i];
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83 Assert.isTrue( null !is cast(Segment)fPosition );
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84
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85 if (i < category.length - 1)
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86 fNextSegment= cast(Segment) category[i + 1];
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87 else
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88 fNextSegment= null;
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89
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90 fOriginalPosition.offset= fPosition.offset;
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91 fOriginalPosition.length= fPosition.length;
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92
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93 if (notDeleted())
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94 adaptToReplace();
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95
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96 }
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97
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98 } catch (BadPositionCategoryException x) {
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99 // do nothing
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100 }
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101 }
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102
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103 /*
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104 * @see org.eclipse.jface.text.DefaultPositionUpdater#adaptToInsert()
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105 */
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106 protected void adaptToInsert() {
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107
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108 Segment segment= cast(Segment) fPosition;
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109 int myStart= segment.offset;
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110 int myEnd= segment.offset + segment.length - (segment.isMarkedForStretch || fNextSegment is null || isAffectingReplace() ? 0 : 1);
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111 myEnd= Math.max(myStart, myEnd);
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112 int yoursStart= fOffset;
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113
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114 try {
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115
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116 if (myEnd < yoursStart)
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117 return;
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118
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119 if (segment.isMarkedForStretch) {
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120 Assert.isTrue(fIsProjectionChange);
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121 segment.isMarkedForShift= false;
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122 if (fNextSegment !is null) {
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123 fNextSegment.isMarkedForShift= true;
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124 fNextSegment.isMarkedForStretch= false;
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125 }
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126 }
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127
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128 if (fLength <= 0) {
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129
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130 if (myStart < (yoursStart + (segment.isMarkedForShift ? 0 : 1)))
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131 fPosition.length += fReplaceLength;
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132 else
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133 fPosition.offset += fReplaceLength;
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134
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135 } else {
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136
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137 if (myStart <= yoursStart && fOriginalPosition.offset <= yoursStart)
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138 fPosition.length += fReplaceLength;
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139 else
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140 fPosition.offset += fReplaceLength;
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141 }
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142
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143 } finally {
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144 segment.clearMark();
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145 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
146 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
147 }