11.3.2. Accessibility services
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Platform software shall provide a set of documented platform services that enable software that provides a user interface running on the platform software to interoperate with assistive technology.
Platform software should support requirements 11.3.2.5 to 11.3.2.17 except that, where a user interface concept that corresponds to one of the clauses 11.3.2.5 to 11.3.2.17 is not supported within the software environment, these requirements are not applicable. For example, selection attributes from 11.3.2.14 (Modification of focus and selection attributes) may not exist in environments that do not allow selection, which is most commonly associated with copy and paste.
Platform software shall provide a set of documented platform accessibility services that enable assistive technology to interoperate with software that provides a user interface running on the platform software.
Platform software should support the requirements of clauses 11.3.2.5 to 11.3.2.17 except that, where a user interface concept that corresponds to one of the clauses 11.3.2.5 to 11.3.2.17 is not supported within the software environment, these requirement are not applicable. For example, selection attributes from 11.3.2.14 (Modification of focus and selection attributes) may not exist in environments that do not allow selection, which is most commonly associated with copy and paste.
Where the software provides a user interface it shall use the applicable documented platform accessibility services. If the documented platform accessibility services do not allow the software to meet the applicable requirements of clauses 11.3.2.5 to 11.3.2.17, then software that provides a user interface shall use other documented services to interoperate with assistive technology.
Where the ICT is assistive technology it shall use the documented platform accessibility services.
Where the software provides a user interface it shall, by using the services as described in clause 11.3.2.3, make the user interface elements' role, state(s), boundary, name, and description programmatically determinable by assistive technologies.
Where the software provides a user interface it shall, by using the services as described in clause 11.3.2.3, make the row and column of each cell in a data table, including headers of the row and column if present, programmatically determinable by assistive technologies.
Where the software provides a user interface, it shall, by using the services as described in clause 11.3.2.3, make the current value of a user interface element and any minimum or maximum values of the range, if the user interface element conveys information about a range of values, programmatically determinable by assistive technologies.
Where the software provides a user interface it shall expose the relationship that a user interface element has as a label for another element, or of being labelled by another element, using the services as described in clause 11.3.2.3, so that this information is programmatically determinable by assistive technologies.
Where the software provides a user interface it shall, by using the services as described in clause 11.3.2.3, make the relationship between a user interface element and any parent or children elements programmatically determinable by assistive technologies.
Where the software provides a user interface it shall, by using the services as described in clause 11.3.2.3, make the text contents, text attributes, and the boundary of text rendered to the screen programmatically determinable by assistive technologies.
Where the software provides a user interface it shall, by using the services as described in clause 11.3.2.3, make a list of available actions that can be executed on a user interface element, programmatically determinable by assistive technologies.
When permitted by security requirements, software that provides a user interface shall, by using the services as described in clause 11.3.2.3, allow the programmatic execution of the actions exposed according to clause 11.3.2.11 by assistive technologies.
Where software provides a user interface it shall, by using the services as described in clause 11.3.2.3, make information and mechanisms necessary to track focus, text insertion point, and selection attributes of user interface elements programmatically determinable by assistive technologies
When permitted by security requirements, software that provides a user interface shall, by using the services as described in clause 11.3.2.3, allow assistive technologies to programmatically modify focus, text insertion point, and selection attributes of user interface elements where the user can modify these items.
Where software provides a user interface it shall, by using the services as described in 11.3.2.3, notify assistive technologies about changes in those programmatically determinable attributes of user interface elements that are referenced in requirements 11.3.2.5 to 11.3.2.11 and 11.3.2.13.
When permitted by security requirements, software that provides a user interface shall, by using the services as described in clause 11.3.2.3, allow assistive technologies to programmatically modify states and properties of user interface elements, where the user can modify these items.
When permitted by security requirements, software that provides a user interface shall, by using the services as described in 11.3.2.3, allow assistive technologies to modify values and text of user interface elements using the input methods of the platform, where a user can modify these items without the use of assistive technology.