ARIA support in Opera Presto 2.5

ARIA (Accessible Rich Internet Applications) is recognized and supported by the Opera Presto HTML parser. Please note that ARIA functionality is dependant upon the Opera product invoking them. Other markup language implementations are experimental at this stage.

Terms used in the following Opera support table
Property
Attributes that are essential to the nature of a given object. As such, they are less likely to change than states; a change of a property may significantly impact the meaning or presentation of an object. Properties mainly provide limitations on objects from the most general case implied by roles without properties applied.
State
A state is a dynamic property expressing characteristics of an object that may change in response to user action or automated processes. States do not affect the essential nature of the object, but represent data associated with the object or user interaction possibilities.
Category
States and properties are categorized as follows:
Widget attributes
These attributes are specific to common user interface elements found on GUI systems or in rich internet applications which receive user input and process user actions. These attributes are used to support the widget roles. Widget attributes might be mapped by a user agent to platform accessibility API states, for access by assistive technologies, or they might be accessed directly from the DOM. User agents MUST provide a way for assistive technologies to be notified when states change, either through DOM attribute change events or platform accessibility API events.
Live Region attributes
These attributes are specific to live regions in rich internet applications. These attributes may be applied to any element. The purpose of these attributes is to indicate that content changes may occur without the element having focus, and to provide assistive technologies with information on how to process those content updates. Some roles specify a default value for the aria-live attribute specific to that role. An example of a live region is a ticker section that lists updating stock quotes.
Drag-and-Drop attributes
These attributes indicate information about drag-and-drop interface elements, such as draggable elements and their drop targets. This information should be rendered visually and provided to assistive technologies through an alternate modality.
Relationship attributes
These attributes indicate relationships or associations between elements which cannot be readily determined from the document structure.
ARIA Role attribute support
Role attribute
- value(s)
Property/State Category Description Support
aria-activedescendant
- id reference
Property Relationship Identifies the currently
active descendant of a
composite widget.
Yes
aria-atomic
- true
- false
Property Live region Indicates if the
assistive technologies
should present all or
part of the changed
region to the user
when the region
is updated.
Yes
aria-autocomplete
- inline
- list
- both
- none
Property Widget Indicates whether user
input completion
suggestions are provided.
No
aria-busy
- true
- false
State Live region Indicates whether a
live region is
currently being updated.
Yes
aria-checked
- true
- false
- mixed
- undefined
State Widget Indicates the current
"checked" state of
checkboxes, radio buttons,
and other widgets.
Yes
aria-controls
- multiple refs to id(s)
Property Relationship Identifies the element
(or elements) whose
contents or presence
are controlled by the
current element.
Yes
aria-describedby
- multiple refs to id(s)
Property Relationship Identifies the element
(or elements) that
describes the object.
Yes
aria-disabled
- true
- false
State Widget Indicates that the
element is perceivable
but disabled, so it
is not editable
or otherwise operable.
Yes
aria-dropeffect
- copy
- move
- reference
- execute
- popup
- none
State Drag-and-Drop Indicates the effect
of a drag-and-drop
operation when the
dragged object is
released on the drop
target.
Yes
aria-expanded
- true
- false
- undefined
State Widget Indicates whether an
expandable/collapsible
group of elements is
currently expanded or
collapsed.
Yes
aria-flowto
- multiple refs to id(s)
Property Relationship Identifies the next
element (or elements)
in the recommended
reading order of
content, overriding
the general default
to read in document
source order.
Yes
aria-grabbed
- true
- false
- undefined
State Drag-and-Drop Indicates an element's
"grabbed" state in a
drag-and-drop operation.
Yes
aria-haspopup
- true
- false
Property Widget Indicates that the
element has a popup
context menu or
sub-level menu.
Yes
aria-hidden
- true
- false
State Widget Indicates that the
element is not
visible or perceivable
to any user.
No
aria-invalid
- grammar
- false
- spelling
- true
State Widget Indicates the entered
value does not
conform to the
format expected by
the application.
Yes
aria-label
- string
Property Relationship Defines a string
value that labels
the current element.
No
aria-labelledby
- multiple refs to id(s)
Property Relationship Identifies the element
(or elements) that
labels the current
element.
Yes
aria-level
- integer
Property Widget Defines the hierarchical
level of an element
within a structure.
Yes
aria-live
- off
- polite
- assertive
Property Live region Indicates that an
element will be
updated, and describes
the types of
updates the user
agents, assistive
technologies, and user
can expect from
the live region.
Yes
aria-multiline
- true
- false
Property Widget Indicates whether a
text box accepts
only a single line,
or if it can
accept multiline input.
Yes
aria-multiselectable
- true
- false
Property Widget Indicates that the
user may select
more than one item
from the current
selectable descendants.
Yes
aria-owns
- multiple refs to id(s)
Property Relationship Identifies an element
(or elements) in order
to define a visual,
functional, or contextual
parent/child relationship
between DOM elements
where the DOM
hierarchy cannot be
used to represent
the relationship.
Yes
aria-posinset
- integer
Property Relationship Defines an element's
number or position
in the current set
of list items or
tree items. Not
required if inferred
by the DOM.
Yes
aria-pressed
- true
- false
- mixed
- undefined
State Widget Indicates the current
"pressed" state of
toggle buttons.
Yes
aria-readonly
- true
- false
Property Widget Indicates that the
element is not
editable, but is
otherwise operable.
Yes
aria-relevant
- additions
- removals
- text
- all
- additions text
Property Live Region Indicates the nature
of changes within
a live region.
Yes
aria-required
- true
- false
Property Widget Indicates that user
input is required
on the element
before a form
may be submitted.
Yes
aria-selected
- true
- false
- undefined
State Widget Indicates the current
"selected" state of
various widgets.
Yes
aria-setsize
- integer
Property Relationship Defines the number
of items in the
current set of
list items or
tree items. Not
required if inferred
by the DOM.
Yes
aria-sort
- ascending
- descending
- none
- other
Property Widget Indicates if items
in a table or
grid are sorted
in ascending or
descending order.
Yes
aria-valuemax
- decimal
Property Widget Defines the maximum
allowed value for
a range widget.
Yes
aria-valuemin
- decimal
Property Widget Defines the minimum
allowed value for
a range widget.
Yes
aria-valuenow
- decimal
Property Widget Defines the current
value for a
range widget.
Yes
aria-valuetext
- string
Property Widget Defines the human
readable text
equivalent of
aria-valuenow
for a range widget.
No

Documentation

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