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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 * 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.swt.accessibility.AccessibleAdapter;
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14
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15 import java.lang.all;
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16
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17 import org.eclipse.swt.accessibility.AccessibleListener;
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18 import org.eclipse.swt.accessibility.AccessibleEvent;
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19
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20 /**
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21 * This adapter class provides default implementations for the
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22 * methods described by the <code>AccessibleListener</code> interface.
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23 * <p>
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24 * Classes that wish to deal with <code>AccessibleEvent</code>s can
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25 * extend this class and override only the methods that they are
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26 * interested in.
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27 * </p><p>
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28 * Note: Accessibility clients use child identifiers to specify
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29 * whether they want information about a control or one of its children.
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30 * Child identifiers are increasing integers beginning with 0.
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31 * The identifier CHILDID_SELF represents the control itself.
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32 * </p>
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33 *
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34 * @see AccessibleListener
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35 * @see AccessibleEvent
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36 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
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37 *
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38 * @since 2.0
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39 */
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40 public abstract class AccessibleAdapter : AccessibleListener {
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41
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42 /**
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43 * Sent when an accessibility client requests the name
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44 * of the control, or the name of a child of the control.
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45 * The default behavior is to do nothing.
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46 * <p>
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47 * Return the name of the control or specified child in the
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48 * <code>result</code> field of the event object. Returning
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49 * an empty string tells the client that the control or child
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50 * does not have a name, and returning null tells the client
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51 * to use the platform name.
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52 * </p>
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53 *
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54 * @param e an event object containing the following fields:<ul>
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55 * <li>childID [IN] - an identifier specifying the control or one of its children</li>
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56 * <li>result [OUT] - the requested name string, or null</li>
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57 * </ul>
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58 */
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59 public void getName(AccessibleEvent e) {
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60 }
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61
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62 /**
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63 * Sent when an accessibility client requests the help string
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64 * of the control, or the help string of a child of the control.
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65 * The default behavior is to do nothing.
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66 * <p>
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67 * The information in this property should be similar to the help
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68 * provided by toolTipText. It describes what the control or child
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69 * does or how to use it, as opposed to getDescription, which
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70 * describes appearance.
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71 * </p><p>
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72 * Return the help string of the control or specified child in
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73 * the <code>result</code> field of the event object. Returning
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74 * an empty string tells the client that the control or child
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75 * does not have a help string, and returning null tells the
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76 * client to use the platform help string.
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77 * </p>
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78 *
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79 * @param e an event object containing the following fields:<ul>
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80 * <li>childID [IN] - an identifier specifying the control or one of its children</li>
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81 * <li>result [OUT] - the requested help string, or null</li>
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82 * </ul>
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83 */
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84 public void getHelp(AccessibleEvent e) {
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85 }
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86
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87 /**
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88 * Sent when an accessibility client requests the keyboard shortcut
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89 * of the control, or the keyboard shortcut of a child of the control.
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90 * The default behavior is to do nothing.
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91 * <p>
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92 * A keyboard shortcut can either be a mnemonic, or an accelerator.
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93 * As a general rule, if the control or child can receive keyboard focus,
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94 * then you should expose its mnemonic, and if it cannot receive keyboard
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95 * focus, then you should expose its accelerator.
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96 * </p><p>
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97 * Return the keyboard shortcut string of the control or specified child
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98 * in the <code>result</code> field of the event object. Returning an
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99 * empty string tells the client that the control or child does not
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100 * have a keyboard shortcut string, and returning null tells the client
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101 * to use the platform keyboard shortcut string.
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102 * </p>
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103 *
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104 * @param e an event object containing the following fields:<ul>
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105 * <li>childID [IN] - an identifier specifying the control or one of its children</li>
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106 * <li>result [OUT] - the requested keyboard shortcut string (example: "ALT+N"), or null</li>
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107 * </ul>
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108 */
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109 public void getKeyboardShortcut(AccessibleEvent e) {
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110 }
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111
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112 /**
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113 * Sent when an accessibility client requests a description
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114 * of the control, or a description of a child of the control.
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115 * The default behavior is to do nothing.
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116 * <p>
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117 * This is a textual description of the control or child's visual
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118 * appearance, which is typically only necessary if it cannot be
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119 * determined from other properties such as role.
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120 * </p><p>
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121 * Return the description of the control or specified child in
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122 * the <code>result</code> field of the event object. Returning
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123 * an empty string tells the client that the control or child
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124 * does not have a description, and returning null tells the
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125 * client to use the platform description.
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126 * </p>
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127 *
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128 * @param e an event object containing the following fields:<ul>
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129 * <li>childID [IN] - an identifier specifying the control or one of its children</li>
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130 * <li>result [OUT] - the requested description string, or null</li>
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131 * </ul>
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132 */
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133 public void getDescription(AccessibleEvent e) {
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134 }
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135 }
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