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annotate org.eclipse.jface.text/src/org/eclipse/jface/text/ITextViewerExtension5.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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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 org.eclipse.jface.text.ITextViewerExtension5;
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15 import org.eclipse.jface.text.IRegion; // packageimport
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16 import org.eclipse.jface.text.ITextViewerExtension3; // packageimport
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17
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18 import java.lang.all;
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19 import java.util.Set;
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20
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21 /**
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22 * Extension interface for {@link org.eclipse.jface.text.ITextViewer}. Defines
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23 * a conceptual replacement of the original visible region concept. This interface
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24 * replaces {@link org.eclipse.jface.text.ITextViewerExtension3}.
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25 * <p>
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26 * Introduces the explicit concept of model and widget coordinates. For example,
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27 * a selection returned by the text viewer's control is a widget selection. A
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28 * widget selection always maps to a certain range of the viewer's document.
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29 * This range is considered the model selection.
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30 * <p>
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31 * All model ranges that have a corresponding widget ranges are considered
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32 * "exposed model ranges". The viewer can be requested to expose a given model
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33 * range. Thus, a visible region is a particular degeneration of exposed model
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34 * ranges.
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35 * <p>
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36 * This interface allows implementers to follow a sophisticated presentation
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37 * model in which the visible presentation is a complex projection of the
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38 * viewer's input document.
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39 *
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40 * @since 3.0
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41 */
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42 public interface ITextViewerExtension5 : ITextViewerExtension3 {
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43
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44 /**
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45 * Returns the minimal region of the viewer's input document that completely
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46 * comprises everything that is visible in the viewer's widget or
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47 * <code>null</code> if there is no such region.
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48 *
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49 * @return the minimal region of the viewer's document comprising the
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50 * contents of the viewer's widget or <code>null</code>
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51 */
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52 IRegion getModelCoverage();
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53
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54 /**
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55 * Returns the widget line that corresponds to the given line of the
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56 * viewer's input document or <code>-1</code> if there is no such line.
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57 *
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58 * @param modelLine the line of the viewer's document
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59 * @return the corresponding widget line or <code>-1</code>
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60 */
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61 int modelLine2WidgetLine(int modelLine);
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62
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63 /**
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64 * Returns the widget offset that corresponds to the given offset in the
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65 * viewer's input document or <code>-1</code> if there is no such offset
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66 *
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67 * @param modelOffset the offset in the viewer's document
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68 * @return the corresponding widget offset or <code>-1</code>
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69 */
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70 int modelOffset2WidgetOffset(int modelOffset);
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71
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72 /**
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73 * Returns the minimal region of the viewer's widget that completely
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74 * comprises the given region of the viewer's input document or
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75 * <code>null</code> if there is no such region.
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76 *
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77 * @param modelRange the region of the viewer's document
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78 * @return the minimal region of the widget comprising
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79 * <code>modelRange</code> or <code>null</code>
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80 */
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81 IRegion modelRange2WidgetRange(IRegion modelRange);
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82
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83 /**
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84 * Returns the offset of the viewer's input document that corresponds to the
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85 * given widget offset or <code>-1</code> if there is no such offset
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86 *
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87 * @param widgetOffset the widget offset
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88 * @return the corresponding offset in the viewer's document or
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89 * <code>-1</code>
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90 */
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91 int widgetOffset2ModelOffset(int widgetOffset);
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92
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93 /**
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94 * Returns the minimal region of the viewer's input document that completely
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95 * comprises the given widget region or <code>null</code> if there is no
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96 * such region.
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97 *
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98 * @param widgetRange the widget region
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99 * @return the minimal region of the viewer's document comprising
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100 * <code>widgetlRange</code> or <code>null</code>
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101 */
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102 IRegion widgetRange2ModelRange(IRegion widgetRange);
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103
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104 /**
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105 * Returns the line of the viewer's input document that corresponds to the
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106 * given widget line or <code>-1</code> if there is no such line.
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107 *
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108 * @param widgetLine the widget line
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109 * @return the corresponding line of the viewer's document or
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110 * <code>-1</code>
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111 */
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112 int widgetLine2ModelLine(int widgetLine);
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113
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114 /**
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115 * Returns the widget line of the given widget offset.
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116 *
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117 * @param widgetOffset the widget offset
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118 * @return the widget line of the widget offset
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119 */
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120 int widgetLineOfWidgetOffset(int widgetOffset);
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121
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122
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123 /**
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124 * Returns the maximal subranges of the given model range thus that there is
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125 * no offset inside a subrange for which there is no image offset.
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126 *
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127 * @param modelRange the model range
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128 * @return the list of subranges
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129 */
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130 IRegion[] getCoveredModelRanges(IRegion modelRange);
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131
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132 /**
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133 * Exposes the given model range. Returns whether this call caused a change
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134 * of the set of exposed model ranges.
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135 *
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136 * @param modelRange the model range to be exposed
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137 * @return <code>true</code> if the set of exposed model ranges changed,
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138 * <code>false</code> otherwise
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139 */
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140 bool exposeModelRange(IRegion modelRange);
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141 }