|
25
|
1 /*******************************************************************************
|
|
|
2 * Copyright (c) 2000, 2008 IBM Corporation and others.
|
|
|
3 * All rights reserved. This program and the accompanying materials
|
|
|
4 * are made available under the terms of the Eclipse Public License v1.0
|
|
|
5 * which accompanies this distribution, and is available at
|
|
|
6 * http://www.eclipse.org/legal/epl-v10.html
|
|
|
7 *
|
|
|
8 * Contributors:
|
|
|
9 * IBM Corporation - initial API and implementation
|
|
|
10 * Port to the D programming language:
|
|
|
11 * Frank Benoit <benoit@tionex.de>
|
|
|
12 *******************************************************************************/
|
|
|
13 module org.eclipse.swt.accessibility.AccessibleControlAdapter;
|
|
|
14
|
|
|
15 import org.eclipse.swt.accessibility.AccessibleControlListener;
|
|
|
16 import org.eclipse.swt.accessibility.AccessibleControlEvent;
|
|
|
17
|
|
|
18 /**
|
|
|
19 * This adapter class provides default implementations for the
|
|
|
20 * methods described by the <code>AccessibleControlListener</code> interface.
|
|
|
21 * <p>
|
|
|
22 * Classes that wish to deal with <code>AccessibleControlEvent</code>s can
|
|
|
23 * extend this class and override only the methods that they are
|
|
|
24 * interested in.
|
|
|
25 * </p><p>
|
|
|
26 * Note: Accessibility clients use child identifiers to specify
|
|
|
27 * whether they want information about a control or one of its children.
|
|
|
28 * Child identifiers are increasing integers beginning with 0.
|
|
|
29 * The identifier CHILDID_SELF represents the control itself.
|
|
|
30 * When returning a child identifier to a client, you may use CHILDID_NONE
|
|
|
31 * to indicate that no child or control has the required information.
|
|
|
32 * </p><p>
|
|
|
33 * Note: This adapter is typically used by implementors of
|
|
|
34 * a custom control to provide very detailed information about
|
|
|
35 * the control instance to accessibility clients.
|
|
|
36 * </p>
|
|
|
37 *
|
|
|
38 * @see AccessibleControlListener
|
|
|
39 * @see AccessibleControlEvent
|
|
|
40 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
|
|
|
41 *
|
|
|
42 * @since 2.0
|
|
|
43 */
|
|
|
44 public abstract class AccessibleControlAdapter : AccessibleControlListener {
|
|
|
45
|
|
|
46 /**
|
|
|
47 * Sent when an accessibility client requests the identifier
|
|
|
48 * of the control child at the specified display coordinates.
|
|
|
49 * The default behavior is to do nothing.
|
|
|
50 * <p>
|
|
|
51 * Return the identifier of the child at display point (x, y)
|
|
|
52 * in the <code>childID</code> field of the event object.
|
|
|
53 * Return CHILDID_SELF if point (x, y) is in the control itself
|
|
|
54 * and not in any child. Return CHILDID_NONE if point (x, y)
|
|
|
55 * is not contained in either the control or any of its children.
|
|
|
56 * </p>
|
|
|
57 *
|
|
|
58 * @param e an event object containing the following fields:<ul>
|
|
|
59 * <li>x, y [IN] - the specified point in display coordinates</li>
|
|
|
60 * <li>childID [Typical OUT] - the ID of the child at point, or CHILDID_SELF, or CHILDID_NONE</li>
|
|
|
61 * <li>accessible [Optional OUT] - the accessible object for the control or child may be returned instead of the childID</li>
|
|
|
62 * </ul>
|
|
|
63 */
|
|
|
64 public void getChildAtPoint(AccessibleControlEvent e) {
|
|
|
65 }
|
|
|
66
|
|
|
67 /**
|
|
|
68 * Sent when an accessibility client requests the location
|
|
|
69 * of the control, or the location of a child of the control.
|
|
|
70 * The default behavior is to do nothing.
|
|
|
71 * <p>
|
|
|
72 * Return a rectangle describing the location of the specified
|
|
|
73 * control or child in the <code>x, y, width, and height</code>
|
|
|
74 * fields of the event object.
|
|
|
75 * </p>
|
|
|
76 *
|
|
|
77 * @param e an event object containing the following fields:<ul>
|
|
|
78 * <li>childID [IN] - an identifier specifying the control or one of its children</li>
|
|
|
79 * <li>x, y, width, height [OUT] - the control or child location in display coordinates</li>
|
|
|
80 * </ul>
|
|
|
81 */
|
|
|
82 public void getLocation(AccessibleControlEvent e) {
|
|
|
83 }
|
|
|
84
|
|
|
85 /**
|
|
|
86 * Sent when an accessibility client requests the accessible object
|
|
|
87 * for a child of the control.
|
|
|
88 * The default behavior is to do nothing.
|
|
|
89 * <p>
|
|
|
90 * Return an <code>Accessible</code> for the specified control or
|
|
|
91 * child in the <code>accessible</code> field of the event object.
|
|
|
92 * Return null if the specified child does not have its own
|
|
|
93 * <code>Accessible</code>.
|
|
|
94 * </p>
|
|
|
95 *
|
|
|
96 * @param e an event object containing the following fields:<ul>
|
|
|
97 * <li>childID [IN] - an identifier specifying a child of the control</li>
|
|
|
98 * <li>accessible [OUT] - an Accessible for the specified childID, or null if one does not exist</li>
|
|
|
99 * </ul>
|
|
|
100 */
|
|
|
101 public void getChild(AccessibleControlEvent e) {
|
|
|
102 }
|
|
|
103
|
|
|
104 /**
|
|
|
105 * Sent when an accessibility client requests the number of
|
|
|
106 * children in the control.
|
|
|
107 * The default behavior is to do nothing.
|
|
|
108 * <p>
|
|
|
109 * Return the number of child items in the <code>detail</code>
|
|
|
110 * field of the event object.
|
|
|
111 * </p>
|
|
|
112 *
|
|
|
113 * @param e an event object containing the following fields:<ul>
|
|
|
114 * <li>detail [OUT] - the number of child items in this control</li>
|
|
|
115 * </ul>
|
|
|
116 */
|
|
|
117 public void getChildCount(AccessibleControlEvent e) {
|
|
|
118 }
|
|
|
119
|
|
|
120 /**
|
|
|
121 * Sent when an accessibility client requests the default action
|
|
|
122 * of the control, or the default action of a child of the control.
|
|
|
123 * The default behavior is to do nothing.
|
|
|
124 * <p>
|
|
|
125 * This string is typically a verb describing what the user does to it.
|
|
|
126 * For example, a Push Button's default action is "Press", a Check Button's
|
|
|
127 * is "Check" or "UnCheck", and List items have the default action "Double Click".
|
|
|
128 * </p><p>
|
|
|
129 * Return a string describing the default action of the specified
|
|
|
130 * control or child in the <code>result</code> field of the event object.
|
|
|
131 * Returning null tells the client to use the platform default action string.
|
|
|
132 * </p>
|
|
|
133 *
|
|
|
134 * @param e an event object containing the following fields:<ul>
|
|
|
135 * <li>childID [IN] - an identifier specifying the control or one of its children</li>
|
|
|
136 * <li>result [OUT] - the requested default action string, or null</li>
|
|
|
137 * </ul>
|
|
|
138 */
|
|
|
139 public void getDefaultAction(AccessibleControlEvent e) {
|
|
|
140 }
|
|
|
141
|
|
|
142 /**
|
|
|
143 * Sent when an accessibility client requests the identity of
|
|
|
144 * the child or control that has keyboard focus.
|
|
|
145 * The default behavior is to do nothing.
|
|
|
146 * <p>
|
|
|
147 * Return the identifier of the child that has focus in the
|
|
|
148 * <code>childID</code> field of the event object.
|
|
|
149 * Return CHILDID_SELF if the control itself has keyboard focus.
|
|
|
150 * Return CHILDID_NONE if neither the control nor any of its children has focus.
|
|
|
151 * </p>
|
|
|
152 *
|
|
|
153 * @param e an event object containing the following fields:<ul>
|
|
|
154 * <li>childID [Typical OUT] - the ID of the child with focus, or CHILDID_SELF, or CHILDID_NONE</li>
|
|
|
155 * <li>accessible [Optional OUT] - the accessible object for a child may be returned instead of its childID</li>
|
|
|
156 * </ul>
|
|
|
157 */
|
|
|
158 public void getFocus(AccessibleControlEvent e) {
|
|
|
159 }
|
|
|
160
|
|
|
161 /**
|
|
|
162 * Sent when an accessibility client requests the role
|
|
|
163 * of the control, or the role of a child of the control.
|
|
|
164 * The default behavior is to do nothing.
|
|
|
165 * <p>
|
|
|
166 * Return a role constant (constant defined in ACC beginning with ROLE_)
|
|
|
167 * that describes the role of the specified control or child in the
|
|
|
168 * <code>detail</code> field of the event object.
|
|
|
169 * </p>
|
|
|
170 *
|
|
|
171 * @param e an event object containing the following fields:<ul>
|
|
|
172 * <li>childID [IN] - an identifier specifying the control or one of its children</li>
|
|
|
173 * <li>detail [OUT] - a role constant describing the role of the control or child</li>
|
|
|
174 * </ul>
|
|
|
175 */
|
|
|
176 public void getRole(AccessibleControlEvent e) {
|
|
|
177 }
|
|
|
178
|
|
|
179 /**
|
|
|
180 * Sent when an accessibility client requests the identity of
|
|
|
181 * the child or control that is currently selected.
|
|
|
182 * The default behavior is to do nothing.
|
|
|
183 * <p>
|
|
|
184 * Return the identifier of the selected child in the
|
|
|
185 * <code>childID</code> field of the event object.
|
|
|
186 * Return CHILDID_SELF if the control itself is selected.
|
|
|
187 * Return CHILDID_MULTIPLE if multiple children are selected, and return an array of childIDs in the <code>children</code> field.
|
|
|
188 * Return CHILDID_NONE if neither the control nor any of its children are selected.
|
|
|
189 * </p>
|
|
|
190 *
|
|
|
191 * @param e an event object containing the following fields:<ul>
|
|
|
192 * <li>childID [Typical OUT] - the ID of the selected child, or CHILDID_SELF, or CHILDID_MULTIPLE, or CHILDID_NONE</li>
|
|
|
193 * <li>accessible [Optional OUT] - the accessible object for the control or child may be returned instead of the childID</li>
|
|
|
194 * </ul>
|
|
|
195 */
|
|
|
196 public void getSelection(AccessibleControlEvent e) {
|
|
|
197 }
|
|
|
198
|
|
|
199 /**
|
|
|
200 * Sent when an accessibility client requests the state
|
|
|
201 * of the control, or the state of a child of the control.
|
|
|
202 * The default behavior is to do nothing.
|
|
|
203 * <p>
|
|
|
204 * Return a state mask (mask bit constants defined in ACC beginning with STATE_)
|
|
|
205 * that describes the current state of the specified control or child in the
|
|
|
206 * <code>detail</code> field of the event object.
|
|
|
207 * </p>
|
|
|
208 *
|
|
|
209 * @param e an event object containing the following fields:<ul>
|
|
|
210 * <li>childID [IN] - an identifier specifying the control or one of its children</li>
|
|
|
211 * <li>detail [OUT] - a state mask describing the current state of the control or child</li>
|
|
|
212 * </ul>
|
|
|
213 */
|
|
|
214 public void getState(AccessibleControlEvent e) {
|
|
|
215 }
|
|
|
216
|
|
|
217 /**
|
|
|
218 * Sent when an accessibility client requests the value
|
|
|
219 * of the control, or the value of a child of the control.
|
|
|
220 * The default behavior is to do nothing.
|
|
|
221 * <p>
|
|
|
222 * Many controls do not return a value. Examples of controls
|
|
|
223 * that do are: Combo returns the text string, Text returns
|
|
|
224 * its contents, ProgressBar returns a string representing a
|
|
|
225 * percentage, and Tree items return a string representing
|
|
|
226 * their level in the tree.
|
|
|
227 * </p><p>
|
|
|
228 * Return a string describing the value of the specified control
|
|
|
229 * or child in the <code>result</code> field of the event object.
|
|
|
230 * Returning null tells the client to use the platform value string.
|
|
|
231 * </p>
|
|
|
232 *
|
|
|
233 * @param e an event object containing the following fields:<ul>
|
|
|
234 * <li>childID [IN] - an identifier specifying the control or one of its children</li>
|
|
|
235 * <li>result [OUT] - the requested value string, or null</li>
|
|
|
236 * </ul>
|
|
|
237 */
|
|
|
238 public void getValue(AccessibleControlEvent e) {
|
|
|
239 }
|
|
|
240
|
|
|
241 /**
|
|
|
242 * Sent when an accessibility client requests the children of the control.
|
|
|
243 * The default behavior is to do nothing.
|
|
|
244 * <p>
|
|
|
245 * Return the children as an array of childIDs in the <code>children</code>
|
|
|
246 * field of the event object.
|
|
|
247 * </p>
|
|
|
248 *
|
|
|
249 * @param e an event object containing the following fields:<ul>
|
|
|
250 * <li>children [Typical OUT] - an array of childIDs</li>
|
|
|
251 * <li>accessible [Optional OUT] - an array of accessible objects for the children may be returned instead of the childIDs</li>
|
|
|
252 * </ul>
|
|
|
253 */
|
|
|
254 public void getChildren(AccessibleControlEvent e) {
|
|
|
255 }
|
|
|
256 }
|
