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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2005 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 dwtx.jface.text.source.VisualAnnotationModel;
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14
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15 import dwt.dwthelper.utils;
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16
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17
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18 import java.util.ArrayList;
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19 import java.util.Iterator;
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20
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21 import dwtx.jface.text.IDocument;
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22 import dwtx.jface.text.Position;
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23
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24
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25
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26 /**
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27 * Annotation model for visual annotations. Assume a viewer's input element is annotated with
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28 * some semantic annotation such as a breakpoint and that it is simultaneously shown in multiple
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29 * viewers. A source viewer, e.g., supports visual range indication for which it utilizes
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30 * annotations. The range indicating annotation is specific to the visual presentation
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31 * of the input element in this viewer and thus should only be visible in this viewer. The
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32 * breakpoints however are independent from the input element's presentation and thus should
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33 * be shown in all viewers in which the element is shown. As a viewer supports one vertical
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34 * ruler which is based on one annotation model, there must be a visual annotation model for
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35 * each viewer which all wrap the same element specific model annotation model.
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36 */
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37 class VisualAnnotationModel : AnnotationModel , IAnnotationModelListener {
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38
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39 /** The wrapped model annotation model */
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40 private IAnnotationModel fModel;
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41
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42 /**
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43 * Constructs a visual annotation model which wraps the given
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44 * model based annotation model
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45 *
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46 * @param modelAnnotationModel the model based annotation model
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47 */
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48 public VisualAnnotationModel(IAnnotationModel modelAnnotationModel) {
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49 fModel= modelAnnotationModel;
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50 }
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51
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52 /**
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53 * Returns the visual annotation model's wrapped model based annotation model.
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54 *
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55 * @return the model based annotation model
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56 */
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57 public IAnnotationModel getModelAnnotationModel() {
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58 return fModel;
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59 }
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60
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61 /*
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62 * @see IAnnotationModel#addAnnotationModelListener(IAnnotationModelListener)
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63 */
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64 public void addAnnotationModelListener(IAnnotationModelListener listener) {
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65
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66 if (fModel !is null && fAnnotationModelListeners.isEmpty())
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67 fModel.addAnnotationModelListener(this);
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68
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69 super.addAnnotationModelListener(listener);
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70 }
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71
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72 /*
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73 * @see IAnnotationModel#connect(IDocument)
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74 */
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75 public void connect(IDocument document) {
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76 super.connect(document);
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77 if (fModel !is null)
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78 fModel.connect(document);
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79 }
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80
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81 /*
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82 * @see IAnnotationModel#disconnect(IDocument)
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83 */
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84 public void disconnect(IDocument document) {
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85 super.disconnect(document);
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86 if (fModel !is null)
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87 fModel.disconnect(document);
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88 }
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89
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90 /*
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91 * @see IAnnotationModel#getAnnotationIterator()
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92 */
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93 public Iterator getAnnotationIterator() {
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94
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95 if (fModel is null)
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96 return super.getAnnotationIterator();
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97
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98 ArrayList a= new ArrayList(20);
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99
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100 Iterator e= fModel.getAnnotationIterator();
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101 while (e.hasNext())
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102 a.add(e.next());
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103
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104 e= super.getAnnotationIterator();
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105 while (e.hasNext())
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106 a.add(e.next());
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107
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108 return a.iterator();
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109 }
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110
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111 /*
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112 * @see IAnnotationModel#getPosition(Annotation)
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113 */
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114 public Position getPosition(Annotation annotation) {
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115
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116 Position p= (Position) getAnnotationMap().get(annotation);
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117 if (p !is null)
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118 return p;
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119
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120 if (fModel !is null)
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121 return fModel.getPosition(annotation);
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122
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123 return null;
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124 }
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125
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126 /*
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127 * @see IAnnotationModelListener#modelChanged(IAnnotationModel)
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128 */
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129 public void modelChanged(IAnnotationModel model) {
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130 if (model is fModel) {
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131 Iterator iter= new ArrayList(fAnnotationModelListeners).iterator();
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132 while (iter.hasNext()) {
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133 IAnnotationModelListener l= (IAnnotationModelListener)iter.next();
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134 l.modelChanged(this);
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135 }
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136 }
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137 }
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138
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139 /*
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140 * @see IAnnotationModel#removeAnnotationModelListener(IAnnotationModelListener)
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141 */
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142 public void removeAnnotationModelListener(IAnnotationModelListener listener) {
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143 super.removeAnnotationModelListener(listener);
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144
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145 if (fModel !is null && fAnnotationModelListeners.isEmpty())
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146 fModel.removeAnnotationModelListener(this);
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147 }
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148 }
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