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annotate dwt/accessibility/Accessible.d @ 13:f565d3a95c0a

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Ported dwt.internal
author Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
date Fri, 22 Aug 2008 16:46:34 +0200
parents 380af2bdd8e5
children 642f460a0908
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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 *
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11 * Port to the D programming language:
0
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12 * Jacob Carlborg <jacob.carlborg@gmail.com>
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13 *******************************************************************************/
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14 module dwt.accessibility.Accessible;
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15
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16 import dwt.dwthelper.utils;
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17 import dwt.DWTException;
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18 import dwt.widgets.Control;
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19
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20 import dwt.accessibility.AccessibleListener;
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21 import dwt.accessibility.AccessibleControlListener;
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22 import dwt.accessibility.AccessibleTextListener;
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23
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24 /**
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25 * Instances of this class provide a bridge between application
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26 * code and assistive technology clients. Many platforms provide
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27 * default accessible behavior for most widgets, and this class
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28 * allows that default behavior to be overridden. Applications
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29 * can get the default Accessible object for a control by sending
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30 * it <code>getAccessible</code>, and then add an accessible listener
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31 * to override simple items like the name and help string, or they
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32 * can add an accessible control listener to override complex items.
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33 * As a rule of thumb, an application would only want to use the
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34 * accessible control listener to implement accessibility for a
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35 * custom control.
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36 *
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37 * @see Control#getAccessible
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38 * @see AccessibleListener
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39 * @see AccessibleEvent
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40 * @see AccessibleControlListener
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41 * @see AccessibleControlEvent
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42 *
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43 * @since 2.0
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44 */
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45 public class Accessible {
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46 Control control;
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47
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48 this (Control control) {
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49 this.control = control;
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50 }
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51
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52 /**
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53 * Adds the listener to the collection of listeners who will
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54 * be notified when an accessible client asks for certain strings,
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55 * such as name, description, help, or keyboard shortcut. The
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56 * listener is notified by sending it one of the messages defined
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57 * in the <code>AccessibleListener</code> interface.
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58 *
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59 * @param listener the listener that should be notified when the receiver
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60 * is asked for a name, description, help, or keyboard shortcut string
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61 *
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62 * @exception IllegalArgumentException <ul>
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63 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
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64 * </ul>
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65 * @exception DWTException <ul>
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66 * <li>ERROR_WIDGET_DISPOSED - if the receiver's control has been disposed</li>
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67 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver's control</li>
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68 * </ul>
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69 *
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70 * @see AccessibleListener
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71 * @see #removeAccessibleListener
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72 */
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73 public void addAccessibleListener (AccessibleListener listener) {
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74 }
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75
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76 /**
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77 * Removes the listener from the collection of listeners who will
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78 * be notified when an accessible client asks for certain strings,
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79 * such as name, description, help, or keyboard shortcut.
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80 *
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81 * @param listener the listener that should no longer be notified when the receiver
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82 * is asked for a name, description, help, or keyboard shortcut string
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83 *
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84 * @exception IllegalArgumentException <ul>
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85 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
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86 * </ul>
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87 * @exception DWTException <ul>
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88 * <li>ERROR_WIDGET_DISPOSED - if the receiver's control has been disposed</li>
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89 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver's control</li>
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90 * </ul>
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91 *
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92 * @see AccessibleListener
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93 * @see #addAccessibleListener
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94 */
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95 public void removeAccessibleListener (AccessibleListener listener) {
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96 }
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97
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98 /**
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99 * Adds the listener to the collection of listeners who will
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100 * be notified when an accessible client asks for custom control
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101 * specific information. The listener is notified by sending it
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102 * one of the messages defined in the <code>AccessibleControlListener</code>
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103 * interface.
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104 *
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105 * @param listener the listener that should be notified when the receiver
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106 * is asked for custom control specific information
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107 *
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108 * @exception IllegalArgumentException <ul>
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109 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
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110 * </ul>
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111 * @exception DWTException <ul>
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112 * <li>ERROR_WIDGET_DISPOSED - if the receiver's control has been disposed</li>
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113 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver's control</li>
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114 * </ul>
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115 *
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116 * @see AccessibleControlListener
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117 * @see #removeAccessibleControlListener
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118 */
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119 public void addAccessibleControlListener (AccessibleControlListener listener) {
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120 }
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121
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122 /**
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123 * Removes the listener from the collection of listeners who will
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124 * be notified when an accessible client asks for custom control
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125 * specific information.
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126 *
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127 * @param listener the listener that should no longer be notified when the receiver
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128 * is asked for custom control specific information
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129 *
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130 * @exception IllegalArgumentException <ul>
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131 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
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132 * </ul>
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133 * @exception DWTException <ul>
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134 * <li>ERROR_WIDGET_DISPOSED - if the receiver's control has been disposed</li>
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135 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver's control</li>
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136 * </ul>
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137 *
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138 * @see AccessibleControlListener
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139 * @see #addAccessibleControlListener
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140 */
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141 public void removeAccessibleControlListener (AccessibleControlListener listener) {
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142 }
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143
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144 /**
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145 * Adds the listener to the collection of listeners who will
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146 * be notified when an accessible client asks for custom text control
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147 * specific information. The listener is notified by sending it
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148 * one of the messages defined in the <code>AccessibleTextListener</code>
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149 * interface.
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150 *
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151 * @param listener the listener that should be notified when the receiver
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152 * is asked for custom text control specific information
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153 *
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154 * @exception IllegalArgumentException <ul>
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155 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
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156 * </ul>
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157 * @exception DWTException <ul>
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158 * <li>ERROR_WIDGET_DISPOSED - if the receiver's control has been disposed</li>
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159 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver's control</li>
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160 * </ul>
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161 *
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162 * @see AccessibleTextListener
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163 * @see #removeAccessibleTextListener
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164 *
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165 * @since 3.0
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166 */
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167 public void addAccessibleTextListener (AccessibleTextListener listener) {
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168 }
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169
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170 /**
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171 * Removes the listener from the collection of listeners who will
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172 * be notified when an accessible client asks for custom text control
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173 * specific information.
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174 *
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175 * @param listener the listener that should no longer be notified when the receiver
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176 * is asked for custom text control specific information
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177 *
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178 * @exception IllegalArgumentException <ul>
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179 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
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180 * </ul>
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181 * @exception DWTException <ul>
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182 * <li>ERROR_WIDGET_DISPOSED - if the receiver's control has been disposed</li>
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183 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver's control</li>
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184 * </ul>
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185 *
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186 * @see AccessibleTextListener
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187 * @see #addAccessibleTextListener
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188 *
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189 * @since 3.0
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190 */
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191 public void removeAccessibleTextListener (AccessibleTextListener listener) {
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192 }
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193
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194 /**
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195 * Returns the control for this Accessible object.
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196 *
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197 * @return the receiver's control
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198 * @since 3.0
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199 */
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200 public Control getControl () {
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201 return control;
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202 }
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203
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204 /**
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205 * Sends a message to accessible clients that the child selection
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206 * within a custom container control has changed.
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207 *
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208 * @exception DWTException <ul>
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209 * <li>ERROR_WIDGET_DISPOSED - if the receiver's control has been disposed</li>
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210 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver's control</li>
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211 * </ul>
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212 *
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213 * @since 3.0
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214 */
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215 public void selectionChanged () {
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216 }
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217
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218 /**
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219 * Sends a message to accessible clients that the text
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220 * caret has moved within a custom control.
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221 *
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222 * @param index the new caret index within the control
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223 *
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224 * @exception DWTException <ul>
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225 * <li>ERROR_WIDGET_DISPOSED - if the receiver's control has been disposed</li>
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226 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver's control</li>
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227 * </ul>
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228 *
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229 * @since 3.0
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230 */
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231 public void textCaretMoved (int index) {
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232 }
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233
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234 /**
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235 * Sends a message to accessible clients that the text
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236 * within a custom control has changed.
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237 *
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238 * @param type the type of change, one of <code>ACC.NOTIFY_TEXT_INSERT</code>
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239 * or <code>ACC.NOTIFY_TEXT_DELETE</code>
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240 * @param startIndex the text index within the control where the insertion or deletion begins
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241 * @param length the non-negative length in characters of the insertion or deletion
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242 *
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243 * @exception DWTException <ul>
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244 * <li>ERROR_WIDGET_DISPOSED - if the receiver's control has been disposed</li>
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245 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver's control</li>
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246 * </ul>
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247 *
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248 * @see ACC#TEXT_INSERT
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249 * @see ACC#TEXT_DELETE
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250 *
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251 * @since 3.0
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252 */
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253 public void textChanged (int type, int startIndex, int length) {
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254 }
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255
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256 /**
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257 * Sends a message to accessible clients that the text
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258 * selection has changed within a custom control.
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259 *
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260 * @exception DWTException <ul>
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261 * <li>ERROR_WIDGET_DISPOSED - if the receiver's control has been disposed</li>
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262 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver's control</li>
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263 * </ul>
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264 *
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265 * @since 3.0
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266 */
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267 public void textSelectionChanged () {
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268 }
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269
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270 /**
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271 * Sends a message to accessible clients indicating that the focus
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272 * has changed within a custom control.
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273 *
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274 * @param childID an identifier specifying a child of the control
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275 *
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276 * @exception DWTException <ul>
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277 * <li>ERROR_WIDGET_DISPOSED - if the receiver's control has been disposed</li>
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278 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver's control</li>
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279 * </ul>
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280 */
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281 public void setFocus (int childID) {
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282 }
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283
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284 /**
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285 * Invokes platform specific functionality to dispose an accessible object.
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286 * <p>
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287 * <b>IMPORTANT:</b> This method is <em>not</em> part of the public
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288 * API for <code>Accessible</code>. It is marked public only so that it
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289 * can be shared within the packages provided by DWT. It is not
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290 * available on all platforms, and should never be called from
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291 * application code.
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292 * </p>
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293 */
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294 public void internal_dispose_Accessible () {
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295 }
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296
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297 /**
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298 * Invokes platform specific functionality to handle a window message.
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299 * <p>
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300 * <b>IMPORTANT:</b> This method is <em>not</em> part of the public
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301 * API for <code>Accessible</code>. It is marked public only so that it
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302 * can be shared within the packages provided by DWT. It is not
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303 * available on all platforms, and should never be called from
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304 * application code.
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305 * </p>
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306 */
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307 public int internal_WM_GETOBJECT (int wParam, int lParam) {
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308 return 0;
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309 }
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310 }