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annotate org.eclipse.jface/src/org/eclipse/jface/viewers/ComboViewer.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) 2004, 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 * Sebastian Davids - bug 69254
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11 * Port to the D programming language:
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12 * Frank Benoit <benoit@tionex.de>
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13 *******************************************************************************/
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14
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15 module org.eclipse.jface.viewers.ComboViewer;
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16
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17 import org.eclipse.jface.viewers.AbstractListViewer;
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18
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19 import org.eclipse.swt.SWT;
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20 import org.eclipse.swt.custom.CCombo;
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21 import org.eclipse.swt.widgets.Combo;
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22 import org.eclipse.swt.widgets.Composite;
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23 import org.eclipse.swt.widgets.Control;
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24 import org.eclipse.core.runtime.Assert;
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25
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26 import java.lang.all;
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27 import java.util.Set;
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28
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29 /**
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30 * A concrete viewer based either on an SWT <code>Combo</code> control or <code>CCombo</code>
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31 * control. This class is intended as an alternative to the JFace <code>ListViewer</code>, which displays
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32 * its content in a combo box rather than a list. Wherever possible, this class attempts to behave
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33 * like ListViewer. <p>
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34 *
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35 * This class is designed to be instantiated with a pre-existing SWT combo control
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36 * and configured with a domain-specific content provider, label provider, element
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37 * filter (optional), and element sorter (optional).
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38 * </p>
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39 *
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40 * @see org.eclipse.jface.viewers.ListViewer
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41 * @since 3.0 (made non-final in 3.4)
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42 */
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43 public class ComboViewer : AbstractListViewer {
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44
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45 /**
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46 * This viewer's list control if this viewer is instantiated with a combo control; otherwise
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47 * <code>null</code>.
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48 *
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49 * @see #ComboViewer(Combo)
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50 */
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51 private Combo combo;
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52
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53 /**
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54 * This viewer's list control if this viewer is instantiated with a CCombo control; otherwise
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55 * <code>null</code>.
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56 *
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57 * @see #ComboViewer(CCombo)
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58 * @since 3.3
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59 */
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60 private CCombo ccombo;
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61
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62 /**
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63 * Creates a combo viewer on a newly-created combo control under the given parent.
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64 * The viewer has no input, no content provider, a default label provider,
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65 * no sorter, and no filters.
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66 *
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67 * @param parent the parent control
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68 */
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69 public this(Composite parent) {
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70 this(parent, SWT.READ_ONLY | SWT.BORDER);
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71 }
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72
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73 /**
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74 * Creates a combo viewer on a newly-created combo control under the given parent.
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75 * The combo control is created using the given SWT style bits.
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76 * The viewer has no input, no content provider, a default label provider,
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77 * no sorter, and no filters.
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78 *
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79 * @param parent the parent control
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80 * @param style the SWT style bits
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81 */
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82 public this(Composite parent, int style) {
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83 this(new Combo(parent, style));
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84 }
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85
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86 /**
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87 * Creates a combo viewer on the given combo control.
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88 * The viewer has no input, no content provider, a default label provider,
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89 * no sorter, and no filters.
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90 *
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91 * @param list the combo control
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92 */
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93 public this(Combo list) {
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94 this.combo = list;
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95 hookControl(list);
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96 }
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97
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98 /**
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99 * Creates a combo viewer on the given CCombo control.
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100 * The viewer has no input, no content provider, a default label provider,
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101 * no sorter, and no filters.
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102 *
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103 * @param list the CCombo control
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104 * @since 3.3
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105 */
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106 public this(CCombo list) {
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107 this.ccombo = list;
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108 hookControl(list);
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109 }
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110
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111 protected override void listAdd(String string, int index) {
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112 if (combo is null) {
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113 ccombo.add(string, index);
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114 } else {
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115 combo.add(string, index);
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116 }
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117 }
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118
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119 protected override void listSetItem(int index, String string) {
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120 if (combo is null) {
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121 ccombo.setItem(index, string);
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122 } else {
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123 combo.setItem(index, string);
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124 }
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125 }
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126
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127 protected override int[] listGetSelectionIndices() {
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128 if (combo is null) {
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129 return [ ccombo.getSelectionIndex() ];
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130 } else {
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131 return [ combo.getSelectionIndex() ];
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132 }
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133 }
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134
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135 protected override int listGetItemCount() {
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136 if (combo is null) {
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137 return ccombo.getItemCount();
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138 } else {
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139 return combo.getItemCount();
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140 }
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141 }
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142
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143 protected override void listSetItems(String[] labels) {
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144 if (combo is null) {
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145 ccombo.setItems(labels);
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146 } else {
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147 combo.setItems(labels);
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148 }
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149 }
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150
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151 protected override void listRemoveAll() {
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152 if (combo is null) {
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153 ccombo.removeAll();
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154 } else {
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155 combo.removeAll();
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156 }
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157 }
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158
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159 protected override void listRemove(int index) {
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160 if (combo is null) {
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161 ccombo.remove(index);
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162 } else {
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163 combo.remove(index);
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164 }
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165 }
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166
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167 /* (non-Javadoc)
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168 * Method declared on Viewer.
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169 */
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170 public override Control getControl() {
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171 if (combo is null) {
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172 return ccombo;
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173 } else {
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174 return combo;
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175 }
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176 }
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177
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178 /**
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179 * Returns this list viewer's list control. If the viewer was not created on
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180 * a CCombo control, some kind of unchecked exception is thrown.
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181 *
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182 * @return the list control
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183 * @since 3.3
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184 */
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185 public CCombo getCCombo() {
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186 Assert.isNotNull(ccombo);
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187 return ccombo;
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188 }
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189
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190 /**
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191 * Returns this list viewer's list control. If the viewer was not created on
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192 * a Combo control, some kind of unchecked exception is thrown.
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193 *
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194 * @return the list control
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195 */
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196 public Combo getCombo() {
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197 Assert.isNotNull(combo);
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198 return combo;
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199 }
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200
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201 /*
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202 * Do nothing -- combos only display the selected element, so there is no way
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203 * we can ensure that the given element is visible without changing the selection.
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204 * Method defined on StructuredViewer.
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205 */
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206 public override void reveal(Object element) {
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207 }
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208
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209 /* (non-Javadoc)
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210 * @see org.eclipse.jface.viewers.AbstractListViewer#listSetSelection(int[])
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211 */
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212 protected override void listSetSelection(int[] ixs) {
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213 if (combo is null) {
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214 for (int idx = 0; idx < ixs.length; idx++) {
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215 ccombo.select(ixs[idx]);
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216 }
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217 } else {
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218 for (int idx = 0; idx < ixs.length; idx++) {
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219 combo.select(ixs[idx]);
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220 }
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221 }
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222 }
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223
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224 /* (non-Javadoc)
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225 * @see org.eclipse.jface.viewers.AbstractListViewer#listDeselectAll()
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226 */
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227 protected override void listDeselectAll() {
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228 if (combo is null) {
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229 ccombo.deselectAll();
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230 ccombo.clearSelection();
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231 } else {
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232 combo.deselectAll();
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233 combo.clearSelection();
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234 }
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235 }
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236
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237 /* (non-Javadoc)
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238 * @see org.eclipse.jface.viewers.AbstractListViewer#listShowSelection()
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239 */
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240 protected override void listShowSelection() {
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241 }
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242 }