WordPress/wp-includes/js/dist/a11y.js
2020-05-31 20:24:46 +00:00

251 lines
8.7 KiB
JavaScript

this["wp"] = this["wp"] || {}; this["wp"]["a11y"] =
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/******/ ({
/***/ 260:
/***/ (function(module, exports) {
(function() { module.exports = this["wp"]["domReady"]; }());
/***/ }),
/***/ 445:
/***/ (function(module, __webpack_exports__, __webpack_require__) {
"use strict";
__webpack_require__.r(__webpack_exports__);
// EXTERNAL MODULE: external {"this":["wp","domReady"]}
var external_this_wp_domReady_ = __webpack_require__(260);
var external_this_wp_domReady_default = /*#__PURE__*/__webpack_require__.n(external_this_wp_domReady_);
// CONCATENATED MODULE: ./node_modules/@wordpress/a11y/build-module/addContainer.js
/**
* Build the live regions markup.
*
* @param {string} ariaLive Optional. Value for the 'aria-live' attribute, default 'polite'.
*
* @return {HTMLDivElement} The ARIA live region HTML element.
*/
var addContainer = function addContainer(ariaLive) {
ariaLive = ariaLive || 'polite';
var container = document.createElement('div');
container.id = 'a11y-speak-' + ariaLive;
container.className = 'a11y-speak-region';
container.setAttribute('style', 'position: absolute;' + 'margin: -1px;' + 'padding: 0;' + 'height: 1px;' + 'width: 1px;' + 'overflow: hidden;' + 'clip: rect(1px, 1px, 1px, 1px);' + '-webkit-clip-path: inset(50%);' + 'clip-path: inset(50%);' + 'border: 0;' + 'word-wrap: normal !important;');
container.setAttribute('aria-live', ariaLive);
container.setAttribute('aria-relevant', 'additions text');
container.setAttribute('aria-atomic', 'true');
var body = document.querySelector('body');
if (body) {
body.appendChild(container);
}
return container;
};
/* harmony default export */ var build_module_addContainer = (addContainer);
// CONCATENATED MODULE: ./node_modules/@wordpress/a11y/build-module/clear.js
/**
* Clear the a11y-speak-region elements.
*/
var clear = function clear() {
var regions = document.querySelectorAll('.a11y-speak-region');
for (var i = 0; i < regions.length; i++) {
regions[i].textContent = '';
}
};
/* harmony default export */ var build_module_clear = (clear);
// CONCATENATED MODULE: ./node_modules/@wordpress/a11y/build-module/filterMessage.js
var previousMessage = '';
/**
* Filter the message to be announced to the screenreader.
*
* @param {string} message The message to be announced.
*
* @return {string} The filtered message.
*/
var filterMessage = function filterMessage(message) {
/*
* Strip HTML tags (if any) from the message string. Ideally, messages should
* be simple strings, carefully crafted for specific use with A11ySpeak.
* When re-using already existing strings this will ensure simple HTML to be
* stripped out and replaced with a space. Browsers will collapse multiple
* spaces natively.
*/
message = message.replace(/<[^<>]+>/g, ' ');
if (previousMessage === message) {
message += "\xA0";
}
previousMessage = message;
return message;
};
/* harmony default export */ var build_module_filterMessage = (filterMessage);
// CONCATENATED MODULE: ./node_modules/@wordpress/a11y/build-module/index.js
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "setup", function() { return build_module_setup; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "speak", function() { return build_module_speak; });
/**
* WordPress dependencies
*/
/**
* Internal dependencies
*/
/**
* Create the live regions.
*/
var build_module_setup = function setup() {
var containerPolite = document.getElementById('a11y-speak-polite');
var containerAssertive = document.getElementById('a11y-speak-assertive');
if (containerPolite === null) {
build_module_addContainer('polite');
}
if (containerAssertive === null) {
build_module_addContainer('assertive');
}
};
/**
* Run setup on domReady.
*/
external_this_wp_domReady_default()(build_module_setup);
/**
* Allows you to easily announce dynamic interface updates to screen readers using ARIA live regions.
* This module is inspired by the `speak` function in wp-a11y.js
*
* @param {string} message The message to be announced by Assistive Technologies.
* @param {string} ariaLive Optional. The politeness level for aria-live. Possible values:
* polite or assertive. Default polite.
*
* @example
* ```js
* import { speak } from '@wordpress/a11y';
*
* // For polite messages that shouldn't interrupt what screen readers are currently announcing.
* speak( 'The message you want to send to the ARIA live region' );
*
* // For assertive messages that should interrupt what screen readers are currently announcing.
* speak( 'The message you want to send to the ARIA live region', 'assertive' );
* ```
*/
var build_module_speak = function speak(message, ariaLive) {
// Clear previous messages to allow repeated strings being read out.
build_module_clear();
message = build_module_filterMessage(message);
var containerPolite = document.getElementById('a11y-speak-polite');
var containerAssertive = document.getElementById('a11y-speak-assertive');
if (containerAssertive && 'assertive' === ariaLive) {
containerAssertive.textContent = message;
} else if (containerPolite) {
containerPolite.textContent = message;
}
};
/***/ })
/******/ });