| author | avstepan |
| Wed, 12 Aug 2015 13:57:12 +0300 | |
| changeset 32283 | 1a96ab120a48 |
| parent 25859 | 3317bb8137f4 |
| permissions | -rw-r--r-- |
| 2 | 1 |
<HTML> |
2 |
<HEAD> |
|
3 |
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> |
|
4 |
<META NAME="GENERATOR" CONTENT="Mozilla/4.04 [en] (WinNT; I) [Netscape]"> |
|
5 |
<!-- |
|
| 5506 | 6 |
Copyright (c) 1998, 2006, Oracle and/or its affiliates. All rights reserved. |
| 2 | 7 |
DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
8 |
||
9 |
This code is free software; you can redistribute it and/or modify it |
|
10 |
under the terms of the GNU General Public License version 2 only, as |
|
| 5506 | 11 |
published by the Free Software Foundation. Oracle designates this |
| 2 | 12 |
particular file as subject to the "Classpath" exception as provided |
| 5506 | 13 |
by Oracle in the LICENSE file that accompanied this code. |
| 2 | 14 |
|
15 |
This code is distributed in the hope that it will be useful, but WITHOUT |
|
16 |
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|
17 |
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
18 |
version 2 for more details (a copy is included in the LICENSE file that |
|
19 |
accompanied this code). |
|
20 |
||
21 |
You should have received a copy of the GNU General Public License version |
|
22 |
2 along with this work; if not, write to the Free Software Foundation, |
|
23 |
Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
|
24 |
||
|
5551
327690766109
6956202: Fix a few missed rebranding issues, please contact lines etc.
ohair
parents:
5506
diff
changeset
|
25 |
Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
327690766109
6956202: Fix a few missed rebranding issues, please contact lines etc.
ohair
parents:
5506
diff
changeset
|
26 |
or visit www.oracle.com if you need additional information or have any |
|
327690766109
6956202: Fix a few missed rebranding issues, please contact lines etc.
ohair
parents:
5506
diff
changeset
|
27 |
questions. |
| 2 | 28 |
--> |
29 |
</HEAD> |
|
30 |
<BODY BGCOLOR="#FFFFFF"> |
|
31 |
Defines a contract between user-interface components and an assistive technology |
|
32 |
that provides access to those components. If a Java application fully supports |
|
33 |
the Java Accessibility API, then it should be compatible with, and friendly |
|
34 |
toward, assistive technologies such as screen readers, screen magnifiers, |
|
35 |
etc. With a Java application that fully supports the Java Accessibility |
|
36 |
API, no screen reader off screen model would be necessary because the API |
|
37 |
provides all of the information normally contained in an off screen model. |
|
38 |
||
39 |
<P>The Java Accessibility API package consists of 8 Java programming language |
|
40 |
interfaces, and 6 Java programming language classes. These are described |
|
41 |
below. |
|
42 |
<H3> |
|
43 |
<A NAME="Accessible"></A><A HREF="Accessible.html">Interface Accessible</A></H3> |
|
44 |
<A HREF="Accessible.html">Interface Accessible</A> is the main interface |
|
45 |
of the Java Accessibility API. All components that support the Java Accessibility |
|
|
32283
1a96ab120a48
8133134: docs: replace <tt> tags (obsolete in html5) for java.desktop
avstepan
parents:
25859
diff
changeset
|
46 |
API must implement this interface. It contains a single method, <code>getAccessibleContext</code>, |
| 2 | 47 |
that returns an instance of the class <A HREF="#AccessibleContext">AccessibleContext</A>. |
48 |
Sun thinks that implementing this interface is the absolute minimum requirement |
|
49 |
of every object that is part of the user interface of a Java application, |
|
50 |
if that program is to be compatible with assistive technologies. |
|
51 |
<H3> |
|
52 |
<A NAME="AccessibleContext"></A><A HREF="AccessibleContext.html">Class |
|
53 |
AccessibleContext</A></H3> |
|
54 |
<A HREF="AccessibleContext.html">AccessibleContext</A> represents the minimum |
|
55 |
information all accessible objects return and is obtained by calling the |
|
|
32283
1a96ab120a48
8133134: docs: replace <tt> tags (obsolete in html5) for java.desktop
avstepan
parents:
25859
diff
changeset
|
56 |
<code>getAccessibleContext</code> method on an object that implements the <A HREF="#Accessible">Accessible</A> |
| 2 | 57 |
interface. This information includes the accessible name, description, |
58 |
<A HREF="#AccessibleRole">role</A>, and <A HREF="#AccessibleState">state</A> |
|
59 |
of the object, as well as information about the parent and children of |
|
60 |
the object. In addition, JavaBeans <SUP><FONT SIZE=-2>TM</FONT></SUP> |
|
61 |
property change support is also included to allow assisitive technologies |
|
62 |
learn when the values of the accessible properties change. AccessibleContext |
|
63 |
also contains methods for obtaining more specific accessibility information |
|
64 |
about a component. If the component supports it, these methods will return |
|
65 |
an object that implements one or more of the following interfaces: |
|
66 |
<UL> |
|
67 |
<LI> |
|
68 |
<B><A HREF="#AccessibleAction">AccessibleAction</A></B> - the object can |
|
69 |
perform one or more actions. This interface provides the standard mechanism |
|
70 |
for an assistive technology to determine what those actions are and tell |
|
71 |
the object to perform those actions. Any object that can be manipulated |
|
|
32283
1a96ab120a48
8133134: docs: replace <tt> tags (obsolete in html5) for java.desktop
avstepan
parents:
25859
diff
changeset
|
72 |
should return an object that implements this interface when the <code>getAccessibleAction</code> |
| 2 | 73 |
method is called on an AccessibleContext.</LI> |
74 |
||
75 |
<LI> |
|
76 |
<B><A HREF="#AccessibleComponent">AccessibleComponent</A></B> - the object |
|
77 |
has a graphical representation. This interface provides the standard mechanism |
|
78 |
for an assistive technology to determine and set the graphical representation |
|
79 |
of the object. Any object that is rendered on the screen should return |
|
|
32283
1a96ab120a48
8133134: docs: replace <tt> tags (obsolete in html5) for java.desktop
avstepan
parents:
25859
diff
changeset
|
80 |
an object that implements this interface when the <code>getAccessibleComponent</code> |
| 2 | 81 |
method is called on an AccessibleContext.</LI> |
82 |
||
83 |
<LI> |
|
84 |
<B><A HREF="#AccessibleSelection">AccessibleSelection</A></B> - the object |
|
85 |
allows its children to be selected. This interface provides the standard |
|
86 |
mechanism for an assistive technology to determine the currently selected |
|
87 |
children as well as modify the selection set. Any object that has children |
|
88 |
that can be selected should return an object that implements this interface |
|
|
32283
1a96ab120a48
8133134: docs: replace <tt> tags (obsolete in html5) for java.desktop
avstepan
parents:
25859
diff
changeset
|
89 |
when the <code>getAccessibleSelection</code> method is called on an AccessibleContext.</LI> |
| 2 | 90 |
|
91 |
<LI> |
|
92 |
<B><A HREF="#AccessibleText">AccessibleText</A></B> - the object presents |
|
93 |
editable textual information on the display. This interface provides the |
|
94 |
standard mechanism for an assistive technology to access that text via |
|
95 |
its content, attributes, and spatial location. Any object that contains |
|
96 |
editable text should return an object that implements this interface when |
|
|
32283
1a96ab120a48
8133134: docs: replace <tt> tags (obsolete in html5) for java.desktop
avstepan
parents:
25859
diff
changeset
|
97 |
the <code>getAccessibleText</code> method is called on an AccessibleContext.</LI> |
| 2 | 98 |
|
99 |
<LI> |
|
100 |
<B><A HREF="#AccessibleHypertext">AccessibleHypertext</A></B> - the object |
|
101 |
presents hypertext information on the display. This interface provides |
|
102 |
the standard mechanism for an assistive technology to access that hypertext |
|
103 |
via its content, attributes, and spatial location. Any object that contains |
|
104 |
hypertext should return an object that implements this interface when the |
|
|
32283
1a96ab120a48
8133134: docs: replace <tt> tags (obsolete in html5) for java.desktop
avstepan
parents:
25859
diff
changeset
|
105 |
<code>getAccessibleText</code> method is called on an AccessibleContext.</LI> |
| 2 | 106 |
|
107 |
<LI> |
|
108 |
<B><A HREF="#AccessibleValue">AccessibleValue</A></B> - the object supports |
|
109 |
a numerical value. This interface provides the standard mechanism for an |
|
110 |
assistive technology to determine and set the current value of the object, |
|
111 |
as well as the minimum and maximum values. Any object that supports a numerical |
|
|
32283
1a96ab120a48
8133134: docs: replace <tt> tags (obsolete in html5) for java.desktop
avstepan
parents:
25859
diff
changeset
|
112 |
value should return an object that implements this interface when the <code>getAccessibleValue</code> |
| 2 | 113 |
method is called on an AccessibleContext.</LI> |
114 |
</UL> |
|
115 |
||
116 |
<H3> |
|
117 |
<A NAME="AccessibleRole"></A><A HREF="AccessibleRole.html">Class AccessibleRole</A></H3> |
|
118 |
This class encapsulates the Accessible object's role in the user interface |
|
|
32283
1a96ab120a48
8133134: docs: replace <tt> tags (obsolete in html5) for java.desktop
avstepan
parents:
25859
diff
changeset
|
119 |
and is obtained by calling the <code>getAccessibleRole</code> method on an |
| 2 | 120 |
<A HREF="#AccessibleContext">AccessibleContext</A>. Accessible roles include |
121 |
"Check box", "Menu Item", "Panel", etc. These roles are identified by the |
|
|
32283
1a96ab120a48
8133134: docs: replace <tt> tags (obsolete in html5) for java.desktop
avstepan
parents:
25859
diff
changeset
|
122 |
constants in this class such as <code>AccessibleRole.CHECK_BOX, AccessibleRole.MENU_ITEM,</code> |
|
1a96ab120a48
8133134: docs: replace <tt> tags (obsolete in html5) for java.desktop
avstepan
parents:
25859
diff
changeset
|
123 |
and <code>AccessibleRole.PANEL</code>. The constants in this class present |
| 2 | 124 |
a strongly typed enumeration of common object roles. A public constructor |
125 |
for this class has been purposely omitted and applications should use one |
|
126 |
of the constants from this class. Although this class pre-defines a large |
|
127 |
list of standard roles, it is extensible so additional programmer-defined |
|
128 |
roles can be added in the future without needing to modify the base class. |
|
129 |
||
130 |
<H3> |
|
131 |
<A NAME="AccessibleState"></A><A HREF="AccessibleState.html">Class AccessibleState</A></H3> |
|
132 |
This class encapsulates a particular state of the Accessible object. Accessible |
|
133 |
states include things like "Armed", "Busy", "Checked", "Focused", etc. |
|
|
32283
1a96ab120a48
8133134: docs: replace <tt> tags (obsolete in html5) for java.desktop
avstepan
parents:
25859
diff
changeset
|
134 |
These roles are identified by the constants in this class such as <code>AccessibleState.ARMED, |
|
1a96ab120a48
8133134: docs: replace <tt> tags (obsolete in html5) for java.desktop
avstepan
parents:
25859
diff
changeset
|
135 |
AccessibleState.BUSY, AccessibleState.CHECKED,</code> and <code>AccessibleState.FOCUSED</code>. |
| 2 | 136 |
The sum of all the states of an Accessible object is called the <A HREF="#AccessibleStateSet">AccessibleStateSet</A>, |
|
32283
1a96ab120a48
8133134: docs: replace <tt> tags (obsolete in html5) for java.desktop
avstepan
parents:
25859
diff
changeset
|
137 |
and can be obtained by calling the <code>getAccessibleStateSet</code> method |
| 2 | 138 |
on an <A HREF="#AccessibleContext">AccessibleContext</A>. |
139 |
||
140 |
<P>The constants in this class present a strongly typed enumeration of |
|
141 |
common object roles. A public constructor for this class has been purposely |
|
142 |
omitted and applications should use one of the constants from this class. |
|
143 |
Although this class pre-defines a large list of standard roles, it is extensible |
|
144 |
so additional, programmer-defined roles can be added in the future without |
|
145 |
needing to modify the base class. |
|
146 |
||
147 |
<H3> |
|
148 |
<A NAME="AccessibleStateSet"></A><A HREF="AccessibleStateSet.html">Class |
|
149 |
AccessibleStateSet</A></H3> |
|
150 |
This class encapsulates a collection of states of the Accessible object |
|
|
32283
1a96ab120a48
8133134: docs: replace <tt> tags (obsolete in html5) for java.desktop
avstepan
parents:
25859
diff
changeset
|
151 |
and is obtained by calling the <code>getAccessibleStateSet</code> method on |
| 2 | 152 |
an <A HREF="#AccessibleContext">AccessibleContext</A>. Since an object |
153 |
might have multiple states (e.g. it might be both "Checked" and "Focused"), |
|
154 |
this class is needed to encapsulate a collection of these states. Methods |
|
155 |
in the class provide for retrieving the individual <A HREF="#AccessibleState">AccessibleStates</A> |
|
156 |
on the state set. |
|
157 |
<H3> |
|
158 |
<A NAME="AccessibleBundle"></A><A HREF="AccessibleBundle.html">Class AccessibleBundle</A></H3> |
|
159 |
This class is used to maintain a strongly typed enumeration. It is the |
|
160 |
super class of both the <A HREF="#AccessibleRole">AccessibleRole</A> and |
|
161 |
<A HREF="#AccessibleState">AccessibleState</A> classes. Programmers normally |
|
162 |
do not interact with this class directly, but will instead use the <A HREF="#AccessibleRole">AccessibleRole</A> |
|
163 |
and <A HREF="#AccessibleState">AccessibleState</A> classes. |
|
164 |
||
165 |
<H3> |
|
166 |
<A NAME="AccessibleAction"></A><A HREF="AccessibleAction.html">Interface |
|
167 |
AccessibleAction</A></H3> |
|
168 |
The <A HREF="AccessibleAction.html">AccessibleAction</A> interface should |
|
169 |
be supported by any object that can perform one or more actions. This interface |
|
170 |
provides the standard mechanism for an assistive technology to determine |
|
171 |
what those actions are as well as tell the object to perform those actions. |
|
172 |
Any object that can be manipulated should support this interface. |
|
173 |
||
174 |
<P>Applications can determine if an object supports the AccessibleAction |
|
175 |
interface by first obtaining its <A HREF="#AccessibleContext">AccessibleContext</A> |
|
|
32283
1a96ab120a48
8133134: docs: replace <tt> tags (obsolete in html5) for java.desktop
avstepan
parents:
25859
diff
changeset
|
176 |
(see <A HREF="#Accessible">Accessible</A>) and then calling the <code>getAccessibleAction</code> |
| 2 | 177 |
method of <A HREF="#AccessibleContext">AccessibleContext</A>. If the return |
178 |
value is not null, the object supports this interface. |
|
179 |
<H3> |
|
180 |
<A NAME="AccessibleComponent"></A><A HREF="AccessibleComponent.html">Interface |
|
181 |
AccessibleComponent</A></H3> |
|
182 |
The <A HREF="AccessibleComponent.html">AccessibleComponent</A> interface |
|
183 |
should be supported by any object that is rendered on the screen. This |
|
184 |
interface provides the standard mechanism for an assistive technology to |
|
185 |
determine and set the graphical representation of an object. |
|
186 |
||
187 |
<P>Applications can determine if an object supports the AccessibleComponent |
|
188 |
interface by first obtaining its <A HREF="#AccessibleContext">AccessibleContext</A> |
|
|
32283
1a96ab120a48
8133134: docs: replace <tt> tags (obsolete in html5) for java.desktop
avstepan
parents:
25859
diff
changeset
|
189 |
(see <A HREF="#Accessible">Accessible</A>) and then calling the <code>getAccessibleComponent</code> |
| 2 | 190 |
method of <A HREF="#AccessibleContext">AccessibleContext</A>. If the return |
191 |
value is not null, the object supports this interface. |
|
192 |
<H3> |
|
193 |
<A NAME="AccessibleSelection"></A><A HREF="AccessibleSelection.html">Interface |
|
194 |
AccessibleSelection</A></H3> |
|
195 |
The <A HREF="AccessibleSelection.html">AccessibleSelection</A> interface |
|
196 |
provides the standard mechanism for an assistive technology to determine |
|
197 |
what the current selected children are, as well as modify the selection |
|
198 |
set. Any object that has children that can be selected should support this |
|
199 |
the AccessibleSelection interface. |
|
200 |
||
201 |
<P>Applications can determine if an object supports the AccessibleSelection |
|
202 |
interface by first obtaining its <A HREF="#AccessibleContext">AccessibleContext</A> |
|
|
32283
1a96ab120a48
8133134: docs: replace <tt> tags (obsolete in html5) for java.desktop
avstepan
parents:
25859
diff
changeset
|
203 |
(see <A HREF="#Accessible">Accessible</A>) and then calling the <code>getAccessibleSelection</code> |
| 2 | 204 |
method of <A HREF="#AccessibleContext">AccessibleContext</A>. If the return |
205 |
value is not null, the object supports this interface. |
|
206 |
<H3> |
|
207 |
<A NAME="AccessibleText"></A><A HREF="AccessibleText.html">Interface AccessibleText</A></H3> |
|
208 |
Interface <A HREF="AccessibleText.html">AccessibleText</A> is the contract |
|
209 |
for making rich, editable text Accessible. Not all text displayed on the |
|
210 |
screen is rich and editable (e.g. text contained in buttons, labels, menus, |
|
211 |
etc., which users aren't expected to manipulate). However, objects containing |
|
212 |
editable text must implement interface AccessibleText if they are to interoperate |
|
213 |
with assistive technologies. |
|
214 |
||
215 |
<P>This interface provides support for going between pixel coordinates |
|
216 |
and the text at a given pixel coordinate, for retrieving the letter, word, |
|
217 |
and sentence at, before, or after a given position in the text. This interface |
|
218 |
provides support for retrieving the attributes of the character at a given |
|
219 |
position in the text (font, font size, style, etc.), as well as getting |
|
220 |
the selected text (if any), the length of the text, and the location of |
|
221 |
the text caret. |
|
222 |
||
223 |
<P>Applications can determine if an object supports the AccessibleText |
|
224 |
interface by first obtaining its <A HREF="#AccessibleContext">AccessibleContext</A> |
|
|
32283
1a96ab120a48
8133134: docs: replace <tt> tags (obsolete in html5) for java.desktop
avstepan
parents:
25859
diff
changeset
|
225 |
(see <A HREF="#Accessible">Accessible</A>) and then calling the <code>getAccessibleText</code> |
| 2 | 226 |
method of <A HREF="#AccessibleContext">AccessibleContext</A>. If the return |
227 |
value is not null, the object supports this interface. |
|
228 |
<H3><A NAME="AccessibleHypertext"></A> |
|
229 |
<A HREF="AccessibleHypertext.html">Interface AccessibleHypertext</A></H3> |
|
230 |
The <A HREF="AccessibleHypertext.html">AccessibleHypertext</A> interface |
|
231 |
should be supported by any object that presents hypertext information on |
|
232 |
the display. This interface provides the standard mechanism for an assistive |
|
233 |
technology to access that text via its content, attributes, and spatial |
|
234 |
location. It also provides standard mechanisms for manipulating <A HREF="#AccessibleHyperlink">hyperlinks</A>. |
|
235 |
Applications can determine if an object supports the AccessibleHypertext |
|
236 |
interface by first obtaining its <A HREF="#AccessibleContext">AccessibleContext</A> |
|
237 |
(see <A HREF="#Accessible">Accessible</A>) and then calling the AccessibleContext.getAccessibleText() |
|
238 |
method of <A HREF="#AccessibleContext">AccessibleContext</A>. If the return |
|
239 |
value is a class which extends AccessibleHypertext, then that object supports |
|
240 |
AccessibleHypertext. |
|
241 |
<H3> |
|
242 |
<A NAME="AccessibleHyperlink"></A><A HREF="AccessibleHyperlink.html">Interface |
|
243 |
AccessibleHyperlink</A></H3> |
|
244 |
An object that is a hyperlink should support the <A HREF="AccessibleHyperlink.html">AccessibleHyperlink</A> |
|
245 |
interface. An object that implements this interface will be returned |
|
246 |
by calling the getLink method on an <A HREF="#AccessibleHypertext">AccessibleHypertext</A> |
|
247 |
object. |
|
248 |
<H3> |
|
249 |
<A NAME="AccessibleValue"></A><A HREF="AccessibleValue.html">Interface |
|
250 |
AccessibleValue</A></H3> |
|
251 |
The <A HREF="AccessibleValue.html">AccessibleValue</A> interface should |
|
252 |
be supported by any object that supports a numerical value (e.g., a scroll |
|
253 |
bar). This interface provides the standard mechanism for an assistive technology |
|
254 |
to determine and set the numerical value as well as get the minimum and |
|
255 |
maximum values. |
|
256 |
||
257 |
<P>Applications can determine if an object supports the AccessibleValue |
|
258 |
interface by first obtaining its <A HREF="#AccessibleContext">AccessibleContext</A> |
|
|
32283
1a96ab120a48
8133134: docs: replace <tt> tags (obsolete in html5) for java.desktop
avstepan
parents:
25859
diff
changeset
|
259 |
(see <A HREF="#Accessible">Accessible</A>) and then calling the <code>getAccessibleValue</code> |
| 2 | 260 |
method of <A HREF="#AccessibleContext">AccessibleContext</A>. If the return |
261 |
value is not null, the object supports this interface. |
|
262 |
||
263 |
@since 1.2 |
|
264 |
</BODY> |
|
265 |
</HTML> |
|
266 |