63 lines
2.6 KiB
JavaScript
63 lines
2.6 KiB
JavaScript
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/**
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* Partial implementation https://www.w3.org/TR/wai-aria-1.2/#tree_exclusion
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* which should only be used for elements with a non-presentational role i.e.
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* `role="none"` and `role="presentation"` will not be excluded.
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*
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* Implements aria-hidden semantics (i.e. parent overrides child)
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* Ignores "Child Presentational: True" characteristics
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*
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* @param element
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* @param options
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* @returns {boolean} true if excluded, otherwise false
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*/
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export function isInaccessible(element) {
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var _element$ownerDocumen;
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var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
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var _options$getComputedS = options.getComputedStyle,
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getComputedStyle = _options$getComputedS === void 0 ? (_element$ownerDocumen = element.ownerDocument.defaultView) === null || _element$ownerDocumen === void 0 ? void 0 : _element$ownerDocumen.getComputedStyle : _options$getComputedS,
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_options$isSubtreeIna = options.isSubtreeInaccessible,
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isSubtreeInaccessibleImpl = _options$isSubtreeIna === void 0 ? isSubtreeInaccessible : _options$isSubtreeIna;
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if (typeof getComputedStyle !== "function") {
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throw new TypeError("Owner document of the element needs to have an associated window.");
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}
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// since visibility is inherited we can exit early
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if (getComputedStyle(element).visibility === "hidden") {
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return true;
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}
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var currentElement = element;
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while (currentElement) {
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if (isSubtreeInaccessibleImpl(currentElement, {
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getComputedStyle: getComputedStyle
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})) {
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return true;
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}
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currentElement = currentElement.parentElement;
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}
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return false;
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}
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/**
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*
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* @param element
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* @param options
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* @returns {boolean} - `true` if every child of the element is inaccessible
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*/
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export function isSubtreeInaccessible(element) {
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var _element$ownerDocumen2;
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var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
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var _options$getComputedS2 = options.getComputedStyle,
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getComputedStyle = _options$getComputedS2 === void 0 ? (_element$ownerDocumen2 = element.ownerDocument.defaultView) === null || _element$ownerDocumen2 === void 0 ? void 0 : _element$ownerDocumen2.getComputedStyle : _options$getComputedS2;
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if (typeof getComputedStyle !== "function") {
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throw new TypeError("Owner document of the element needs to have an associated window.");
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}
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if (element.hidden === true) {
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return true;
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}
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if (element.getAttribute("aria-hidden") === "true") {
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return true;
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}
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if (getComputedStyle(element).display === "none") {
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return true;
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}
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return false;
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}
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//# sourceMappingURL=is-inaccessible.mjs.map
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