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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, 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 * Brad Reynolds - bug 141435
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11 * Tom Schindl <tom.schindl@bestsolution.at> - bug 157309, 177619
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12 * Port to the D programming language:
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13 * Frank Benoit <benoit@tionex.de>
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14 *******************************************************************************/
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15
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16 module org.eclipse.jface.viewers.ListViewer;
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17
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18 import org.eclipse.jface.viewers.AbstractListViewer;
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19
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20
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21 import org.eclipse.swt.SWT;
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22 import org.eclipse.swt.graphics.Rectangle;
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23 import org.eclipse.swt.widgets.Composite;
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24 import org.eclipse.swt.widgets.Control;
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25 static import org.eclipse.swt.widgets.List;
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26 import org.eclipse.core.runtime.Assert;
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27
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28 import java.lang.all;
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29 import java.util.List;
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30 import java.util.Set;
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31
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32 /**
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33 * A concrete viewer based on an SWT <code>List</code> control.
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34 * <p>
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35 * This class is not intended to be subclassed. It is designed to be
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36 * instantiated with a pre-existing SWT <code>List</code> control and configured
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37 * with a domain-specific content provider, label provider, element filter (optional),
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38 * and element sorter (optional).
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39 * <p>
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40 * Note that the SWT <code>List</code> control only supports the display of strings, not icons.
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41 * If you need to show icons for items, use <code>TableViewer</code> instead.
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42 * </p>
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43 *
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44 * @see TableViewer
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45 * @noextend This class is not intended to be subclassed by clients.
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46 */
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47 public class ListViewer : AbstractListViewer {
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48 alias AbstractListViewer.setSelectionToWidget setSelectionToWidget;
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49
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50 /**
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51 * This viewer's list control.
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52 */
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53 private org.eclipse.swt.widgets.List.List list;
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54
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55 /**
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56 * Creates a list viewer on a newly-created list control under the given parent.
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57 * The list control is created using the SWT style bits <code>MULTI, H_SCROLL, V_SCROLL,</code> and <code>BORDER</code>.
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58 * The viewer has no input, no content provider, a default label provider,
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59 * no sorter, and no filters.
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60 *
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61 * @param parent the parent control
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62 */
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63 public this(Composite parent) {
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64 this(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL | SWT.BORDER);
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65 }
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66
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67 /**
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68 * Creates a list viewer on a newly-created list control under the given parent.
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69 * The list control is created using the given SWT style bits.
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70 * The viewer has no input, no content provider, a default label provider,
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71 * no sorter, and no filters.
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72 *
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73 * @param parent the parent control
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74 * @param style the SWT style bits
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75 */
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76 public this(Composite parent, int style) {
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77 this(new org.eclipse.swt.widgets.List.List(parent, style));
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78 }
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79
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80 /**
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81 * Creates a list viewer on the given list control.
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82 * The viewer has no input, no content provider, a default label provider,
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83 * no sorter, and no filters.
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84 *
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85 * @param list the list control
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86 */
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87 public this(org.eclipse.swt.widgets.List.List list) {
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88 this.list = list;
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89 hookControl(list);
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90 }
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91
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92 /* (non-Javadoc)
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93 * Method declared on Viewer.
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94 */
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95 public override Control getControl() {
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96 return list;
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97 }
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98
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99 /**
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100 * Returns this list viewer's list control.
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101 *
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102 * @return the list control
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103 */
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104 public org.eclipse.swt.widgets.List.List getList() {
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105 return list;
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106 }
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107
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108 /*
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109 * Non-Javadoc.
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110 * Method defined on StructuredViewer.
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111 */
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112 public override void reveal(Object element) {
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113 Assert.isNotNull(element);
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114 int index = getElementIndex(element);
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115 if (index is -1) {
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116 return;
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117 }
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118 // algorithm patterned after List.showSelection()
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119 int count = list.getItemCount();
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120 if (count is 0) {
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121 return;
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122 }
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123 int height = list.getItemHeight();
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124 Rectangle rect = list.getClientArea();
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125 int topIndex = list.getTopIndex();
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126 int visibleCount = Math.max(rect.height / height, 1);
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127 int bottomIndex = Math.min(topIndex + visibleCount, count) - 1;
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128 if ((topIndex <= index) && (index <= bottomIndex)) {
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129 return;
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130 }
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131 int newTop = Math.min(Math.max(index - (visibleCount / 2), 0),
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132 count - 1);
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133 list.setTopIndex(newTop);
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134 }
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135
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136 /* (non-Javadoc)
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137 * @see org.eclipse.jface.viewers.AbstractListViewer#listAdd(java.lang.String, int)
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138 */
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139 protected override void listAdd(String string, int index) {
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140 list.add(string, index);
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141 }
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142
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143 /* (non-Javadoc)
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144 * @see org.eclipse.jface.viewers.AbstractListViewer#listSetItem(int, java.lang.String)
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145 */
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146 protected override void listSetItem(int index, String string) {
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147 list.setItem(index, string);
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148 }
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149
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150 /* (non-Javadoc)
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151 * @see org.eclipse.jface.viewers.AbstractListViewer#listGetSelectionIndices()
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152 */
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153 protected override int[] listGetSelectionIndices() {
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154 return list.getSelectionIndices();
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155 }
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156
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157 /* (non-Javadoc)
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158 * @see org.eclipse.jface.viewers.AbstractListViewer#listGetItemCount()
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159 */
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160 protected override int listGetItemCount() {
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161 return list.getItemCount();
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162 }
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163
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164 /* (non-Javadoc)
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165 * @see org.eclipse.jface.viewers.AbstractListViewer#listSetItems(java.lang.String[])
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166 */
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167 protected override void listSetItems(String[] labels) {
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168 list.setItems(labels);
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169 }
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170
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171 /* (non-Javadoc)
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172 * @see org.eclipse.jface.viewers.AbstractListViewer#listRemoveAll()
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173 */
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174 protected override void listRemoveAll() {
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175 list.removeAll();
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176 }
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177
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178 /* (non-Javadoc)
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179 * @see org.eclipse.jface.viewers.AbstractListViewer#listRemove(int)
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180 */
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181 protected override void listRemove(int index) {
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182 list.remove(index);
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183 }
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184
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185 /* (non-Javadoc)
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186 * @see org.eclipse.jface.viewers.AbstractListViewer#listSelectAndShow(int[])
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187 */
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188 protected override void listSetSelection(int[] ixs) {
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189 list.setSelection(ixs);
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190 }
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191
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192 /* (non-Javadoc)
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193 * @see org.eclipse.jface.viewers.AbstractListViewer#listDeselectAll()
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194 */
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195 protected override void listDeselectAll() {
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196 list.deselectAll();
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197 }
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198
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199 /* (non-Javadoc)
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200 * @see org.eclipse.jface.viewers.AbstractListViewer#listShowSelection()
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201 */
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202 protected override void listShowSelection() {
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203 list.showSelection();
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204 }
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205
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206 /* (non-Javadoc)
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207 * @see org.eclipse.jface.viewers.AbstractListViewer#listGetTopIndex()
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208 */
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209 protected override int listGetTopIndex() {
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210 return list.getTopIndex();
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211 }
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212
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213 /*
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214 * (non-Javadoc)
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215 * @see org.eclipse.jface.viewers.AbstractListViewer#listSetTopIndex(int)
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216 */
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217 protected override void listSetTopIndex(int index) {
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218 list.setTopIndex(index);
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219 }
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220
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221 /* (non-Javadoc)
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222 * @see org.eclipse.jface.viewers.AbstractListViewer#setSelectionToWidget(java.util.List, bool)
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223 */
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224 protected override void setSelectionToWidget(List in_, bool reveal) {
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225 if( reveal ) {
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226 super.setSelectionToWidget(in_, reveal);
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227 } else {
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228 if (in_ is null || in_.size() is 0) { // clear selection
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229 list.deselectAll();
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230 } else {
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231 int n = in_.size();
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232 int[] ixs = new int[n];
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233 int count = 0;
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234 for (int i = 0; i < n; ++i) {
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235 Object el = in_.get(i);
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236 int ix = getElementIndex(el);
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237 if (ix >= 0) {
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238 ixs[count++] = ix;
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239 }
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240 }
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241 if (count < n) {
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242 System.arraycopy(ixs, 0, ixs = new int[count], 0, count);
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243 }
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244 list.deselectAll();
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245 list.select(ixs);
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246 }
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247 }
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248 }
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249
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250
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251 }