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LibWeb: Add Support for the ARIA Element Properties

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Element now supports getting and setting ARIA properties from
JS and HTML.
This commit is contained in:
Jonah 2022-11-28 17:58:13 -06:00 • committed by Sam Atkins
parent 0a244b9c1f
commit e63d9d4925
57 changed files with 976 additions and 1 deletions
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35
Userland/Libraries/LibWeb/DOM/ARIAMixin.cpp Normal file
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/*
* Copyright (c) 2022, Jonah Shafran <jonahshafran@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/DOM/ARIAMixin.h>
#include <LibWeb/DOM/ARIARoleNames.h>
#include <LibWeb/Infra/CharacterTypes.h>
namespace Web::DOM {
// https://www.w3.org/TR/wai-aria-1.2/#introroles
FlyString ARIAMixin::role_or_default() const
{
// 1. Use the rules of the host language to detect that an element has a role attribute and to identify the attribute value string for it.
auto role_string = role();
// 2. Separate the attribute value string for that attribute into a sequence of whitespace-free substrings by separating on whitespace.
auto role_list = role_string.split_view(Infra::is_ascii_whitespace);
// 3. Compare the substrings to all the names of the non-abstract WAI-ARIA roles. Case-sensitivity of the comparison inherits from the case-sensitivity of the host language.
for (auto const& role : role_list) {
// 4. Use the first such substring in textual order that matches the name of a non-abstract WAI-ARIA role.
if (ARIARoleNames::is_non_abstract_aria_role(role))
return role;
}
// https://www.w3.org/TR/wai-aria-1.2/#document-handling_author-errors_roles
// If the role attribute contains no tokens matching the name of a non-abstract WAI-ARIA role, the user agent MUST treat the element as if no role had been provided.
// https://www.w3.org/TR/wai-aria-1.2/#implicit_semantics
return default_role();
}
}