Asqatasun v4 - RGAA 3.2016 - Rule 1.6.7
Summary
This test consists in detecting informative svg images with a <desc> child tag or a "aria-label" attribute and thus defining the applicability of the test.
Human check will be then needed to determine whether the detailed description is well rendered by assistive technologies.
Business description
Criterion
Test
Description
svg) porteuse d’information, qui implémente une référence à une description détaillée adjacente via une propriété aria-label ou une balise desc, cette référence est-elle correctement restituée par les technologies d’assistance ?Level
A
Technical description
Scope
Page
Decision level
Semi-Decidable
Algorithm
Selection
Set1
All the <svg> tags of the page not within a link, not identified as captcha and with a not empty <desc> child tag (see Notes about captcha detection) (svg:not(a svg):has(desc:not(:matchesOwn(^\s*$)))
Set2
All the <svg> tags of the page not within a link, not identified as captcha and with a not empty "aria-label" attribute (see Notes about captcha detection) (svg[aria-label]:not([aria-label~=^\s*$]:not(a svg))
Set3
All the elements of Set1 identified as informative image by marker usage (see Notes for details about detection through marker)
Set4
All the elements of Set2 identified as informative image by marker usage (see Notes for details about detection through marker)
Set5
All the elements of Set1 identified neither as informative image, nor as decorative image by marker usage (see Notes for details about detection through marker)
Set6
All the elements of Set2 identified neither as informative image, nor as decorative image by marker usage (see Notes for details about detection through marker)
Process
Test1
For each element of Set2 and Set3, raise a MessageA.
Test2
For each element of Set4 and Set5, raise a MessageB.
MessageA : Check the restitution by assistive technologies of the description of informative images
- code : CheckAtRestitutionOfDescriptionOfInformativeImage
- status: Pre-Qualified
- parameter : text,
"aria-label"attribute, tag name, snippet - present in source : yes
MessageB : Check nature of image and the restitution by assistive technologies of their description
- code : CheckNatureOfImageAndAtRestitutionOfDescription
- status: Pre-Qualified
- parameter : text,
"aria-label"attribute, tag name, snippet - present in source : yes
Analysis
Not Applicable
The page has no svg image with a not empty <desc> child tag or a not empty "aria-label" attribute(Set1 and Set2 are empty)
Pre-Qualified
In all other cases
Notes
Markers
Informative images markers are set through the INFORMATIVE_IMAGE_MARKER parameter.
Decorative images markers are set through the DECORATIVE_IMAGE_MARKER parameter.
The value(s) passed as marker(s) will be checked against the following attributes:
classidrole
Captcha detection
An element is identified as a CAPTCHA when the "captcha" occurrence is found :
- on one attribute of the element
- or within the text of the element
- or on one attribute of one parent of the element
- or within the text of one parent of the element
- or on one attribute of a sibling of the element
- or within the text of a sibling of the element