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Code Issues Releases Wiki Activity

[fix] a11y - allow fallback roles (#8045)

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Torsten Dittmann 2022-12-05 15:00:51 +01:00 committed by GitHub
parent 6330bfc052
commit 676716979a
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 73 additions and 47 deletions
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87
src/compiler/compile/nodes/Element.ts
View File

@ -194,10 +194,10 @@ function is_valid_aria_attribute_value(schema: ARIAPropertyDefinition, value: st
.indexOf(typeof value === 'string' ? value.toLowerCase() : value) > -1;
case 'idlist': // if list of ids, split each
return typeof value === 'string'
&& value.split(' ').every((id) => typeof id === 'string');
&& value.split(regex_any_repeated_whitespaces).every((id) => typeof id === 'string');
case 'tokenlist': // if list of tokens, split each
return typeof value === 'string'
&& value.split(' ').every((token) => (schema.values || []).indexOf(token.toLowerCase()) > -1);
&& value.split(regex_any_repeated_whitespaces).every((token) => (schema.values || []).indexOf(token.toLowerCase()) > -1);
default:
return false;
}
@ -492,47 +492,52 @@ export default class Element extends Node {
component.warn(attribute, compiler_warnings.a11y_misplaced_role(this.name));
}
const value = attribute.get_static_value() as ARIARoleDefintionKey;
const value = attribute.get_static_value();
if (value && aria_role_abstract_set.has(value)) {
component.warn(attribute, compiler_warnings.a11y_no_abstract_role(value));
} else if (value && !aria_role_set.has(value)) {
const match = fuzzymatch(value, aria_roles);
component.warn(attribute, compiler_warnings.a11y_unknown_role(value, match));
}
// no-redundant-roles
const has_redundant_role = value === a11y_implicit_semantics.get(this.name);
if (this.name === value || has_redundant_role) {
component.warn(attribute, compiler_warnings.a11y_no_redundant_roles(value));
}
// Footers and headers are special cases, and should not have redundant roles unless they are the children of sections or articles.
const is_parent_section_or_article = is_parent(this.parent, ['section', 'article']);
if (!is_parent_section_or_article) {
const has_nested_redundant_role = value === a11y_nested_implicit_semantics.get(this.name);
if (has_nested_redundant_role) {
component.warn(attribute, compiler_warnings.a11y_no_redundant_roles(value));
}
}
// role-has-required-aria-props
if (!is_semantic_role_element(value, this.name, attribute_map)) {
const role = roles.get(value);
if (role) {
const required_role_props = Object.keys(role.requiredProps);
const has_missing_props = required_role_props.some(prop => !attributes.find(a => a.name === prop));
if (has_missing_props) {
component.warn(attribute, compiler_warnings.a11y_role_has_required_aria_props(value as string, required_role_props));
if (typeof value === 'string') {
value.split(regex_any_repeated_whitespaces).forEach((current_role: ARIARoleDefintionKey) => {
if (current_role && aria_role_abstract_set.has(current_role)) {
component.warn(attribute, compiler_warnings.a11y_no_abstract_role(current_role));
} else if (current_role && !aria_role_set.has(current_role)) {
const match = fuzzymatch(current_role, aria_roles);
component.warn(attribute, compiler_warnings.a11y_unknown_role(current_role, match));
}
}
}
// no-interactive-element-to-noninteractive-role
if (is_interactive_element(this.name, attribute_map) && (is_non_interactive_roles(value) || is_presentation_role(value))) {
component.warn(this, compiler_warnings.a11y_no_interactive_element_to_noninteractive_role(value, this.name));
// no-redundant-roles
const has_redundant_role = current_role === a11y_implicit_semantics.get(this.name);
if (this.name === current_role || has_redundant_role) {
component.warn(attribute, compiler_warnings.a11y_no_redundant_roles(current_role));
}
// Footers and headers are special cases, and should not have redundant roles unless they are the children of sections or articles.
const is_parent_section_or_article = is_parent(this.parent, ['section', 'article']);
if (!is_parent_section_or_article) {
const has_nested_redundant_role = current_role === a11y_nested_implicit_semantics.get(this.name);
if (has_nested_redundant_role) {
component.warn(attribute, compiler_warnings.a11y_no_redundant_roles(current_role));
}
}
// role-has-required-aria-props
if (!is_semantic_role_element(current_role, this.name, attribute_map)) {
const role = roles.get(current_role);
if (role) {
const required_role_props = Object.keys(role.requiredProps);
const has_missing_props = required_role_props.some(prop => !attributes.find(a => a.name === prop));
if (has_missing_props) {
component.warn(attribute, compiler_warnings.a11y_role_has_required_aria_props(current_role, required_role_props));
}
}
}
// no-interactive-element-to-noninteractive-role
if (is_interactive_element(this.name, attribute_map) && (is_non_interactive_roles(current_role) || is_presentation_role(current_role))) {
component.warn(this, compiler_warnings.a11y_no_interactive_element_to_noninteractive_role(current_role, this.name));
}
});
}
}
@ -621,7 +626,7 @@ export default class Element extends Node {
if (href_static_value === null || href_static_value.match(/^(https?:)?\/\//i)) {
const rel = attribute_map.get('rel');
if (rel == null || rel.is_static) {
const rel_values = rel ? rel.get_static_value().split(' ') : [];
const rel_values = rel ? rel.get_static_value().split(regex_any_repeated_whitespaces) : [];
const expected_values = ['noreferrer'];
expected_values.forEach(expected_value => {
if (!rel || rel && rel_values.indexOf(expected_value) < 0) {

8
test/validator/samples/a11y-aria-role/input.svelte
View File

@ -1 +1,7 @@
<div role="toooltip"></div>
<!-- valid -->
<div role="tooltip"></div>
<div role="button tooltip"></div>
<!-- not valid -->
<div role="toooltip"></div>
<div role="button toooltip"></div>

25
test/validator/samples/a11y-aria-role/warnings.json
View File

@ -3,15 +3,30 @@
"code": "a11y-unknown-role",
"message": "A11y: Unknown role 'toooltip' (did you mean 'tooltip'?)",
"start": {
"line": 1,
"line": 6,
"column": 5,
"character": 5
"character": 101
},
"end": {
"line": 1,
"line": 6,
"column": 20,
"character": 20
"character": 116
},
"pos": 5
"pos": 101
},
{
"code": "a11y-unknown-role",
"message": "A11y: Unknown role 'toooltip' (did you mean 'tooltip'?)",
"start": {
"line": 7,
"column": 5,
"character": 129
},
"end": {
"line": 7,
"column": 27,
"character": 151
},
"pos": 129
}
]