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Accessibility/WebAccessibilityAPI: Difference between revisions
→Events
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==Events== | ==Events== | ||
The accessible element may fire various number of events. You can add event listener on document accessible to handle all events from accessible elements | The accessible element may fire various number of events. You can add event listener on document accessible to handle all events from accessible elements belonging to the document. | ||
<pre> | <pre> | ||
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::Extra attributes used to describe the event. Used for certain event types. | ::Extra attributes used to describe the event. Used for certain event types. | ||
</code> | </code> | ||
<b>Example. Live regions processing.</b> | |||
<pre> | |||
function handleLiveRegion(aEvent) | |||
{ | |||
var attrs = | |||
{ live: "assertive", relevant: "change:name" }; | |||
if (aEvent.attributes.hasAllOf(attrs)) { | |||
say(aEvent.target.name); | |||
} | |||
} | |||
document.a11ement.on("change:name"); | |||
</pre> | |||
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"focus" | "focus" | ||
::Fired when accessible element is focused. | ::Fired when accessible element is focused. | ||
"caretmove" | "caretmove" | ||
::Fired when caret is moved within the document. | ::Fired when caret is moved within the document. | ||
"change:name" | |||
::Fired when name property is changed. | |||
</code> | </code> | ||