Revision 299035 of IA2 Object Attributes

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<h2 id="Introduction" name="Introduction">Introduction</h2>
<p><code>IAccessible2::getAttributes</code> method is used to get object attributes in IAccessible2. Gecko supports a subset of attributes defined by <a href="https://www.linuxfoundation.org/collaborate/workgroups/accessibility/iaccessible2/objectattributes" title="https://www.linuxfoundation.org/collaborate/workgroups/accessibility/iaccessible2/objectattributes">IA2 spec</a> and on the other hand it provides an extension of object attributes. The complete list of object attributes supported by Gecko can be referred <a href="en/Accessibility/AT-APIs/Gecko/Attrs">here</a>.</p>
<p>The list of unofficial object attributes:</p>
<ul>
  <li>class - a class name for DOM element associated with the accessible, refer to @class attribute;</li>
  <li>id - identifier of the element associated with the accessible, refer to @id attribute;</li>
  <li>tag - the tag name of the element associated with the accessible;</li>
  <li>xml-roles - a list of roles exposed by the accessible;</li>
  <li>level, posinset, setsize - duplicates the IAccessible2::groupPosition;</li>
  <li>container-live-role - a role of live region accessible this accessible is contained by;</li>
  <li>checkable - indicates the accessible is checkable;</li>
  <li>haspopup - indicates the accessible has associated popup;</li>
  <li>src - @src attribute of HTML img element;</li>
  <li>cycles - indicates the table cell accessible is a cycler;</li>
  <li>layout-guess - indicates the table accessible is rather for layout than for data;</li>
  <li>valuetext - a text equivalent of value of the accessible.</li>
</ul>