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LibWeb: Replace ARIA “synonym” roles with their preferred synonyms

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This change does replacement of ARIA roles that have newer synonyms.

There are a number of newer ARIA roles that are synonyms for older
roles. https://wpt.fyi/results/wai-aria/role/synonym-roles.html has a
number of subtests which expect that when retrieving the value of an
explicitly- specified role attribute, if the value is one of the older
role values, implementations must replace that with its newer synonym.
This commit is contained in:
sideshowbarker 2024-12-20 15:16:42 +09:00 • committed by Tim Flynn
commit 695ce3763e
Notes: github-actions[bot] 2024-12-20 13:46:50 +00:00
3 changed files with 60 additions and 0 deletions
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14
Libraries/LibWeb/ARIA/ARIAMixin.cpp
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@ -28,6 +28,20 @@ Optional<Role> ARIAMixin::role_from_role_attribute_value() const
auto role = role_from_string(role_name);
if (!role.has_value())
continue;
// NOTE: Per https://w3c.github.io/aria/#directory, "Authors are advised to treat directory as deprecated and to
// use 'list'." Further, the "directory role == computedrole list" and "div w/directory role == computedrole
// list" tests in https://wpt.fyi/results/wai-aria/role/synonym-roles.html expect "list", not "directory".
if (role == Role::directory)
return Role::list;
// NOTE: The "image" role value is a synonym for the older "img" role value; however, the "synonym img role ==
// computedrole image" test in https://wpt.fyi/results/wai-aria/role/synonym-roles.html expects "image", not "img".
if (role == Role::img)
return Role::image;
// NOTE: Per https://w3c.github.io/aria/#presentation, "the working group introduced none as the preferred
// synonym to the presentation role"; further, https://wpt.fyi/results/wai-aria/role/synonym-roles.html has a
// "synonym presentation role == computedrole none" test that expects "none", not "presentation".
if (role == Role::presentation)
return Role::none;
if (!is_abstract_role(*role))
return *role;
}