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a11y.js 10KB

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  1. this["wp"] = this["wp"] || {}; this["wp"]["a11y"] =
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  31. /******/ // expose the modules object (__webpack_modules__)
  32. /******/ __webpack_require__.m = modules;
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  84. /******/ // Load entry module and return exports
  85. /******/ return __webpack_require__(__webpack_require__.s = "jncB");
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  87. /************************************************************************/
  88. /******/ ({
  89. /***/ "Y8OO":
  90. /***/ (function(module, exports) {
  91. (function() { module.exports = window["wp"]["domReady"]; }());
  92. /***/ }),
  93. /***/ "jncB":
  94. /***/ (function(module, __webpack_exports__, __webpack_require__) {
  95. "use strict";
  96. // ESM COMPAT FLAG
  97. __webpack_require__.r(__webpack_exports__);
  98. // EXPORTS
  99. __webpack_require__.d(__webpack_exports__, "setup", function() { return /* binding */ setup; });
  100. __webpack_require__.d(__webpack_exports__, "speak", function() { return /* binding */ speak; });
  101. // EXTERNAL MODULE: external ["wp","domReady"]
  102. var external_wp_domReady_ = __webpack_require__("Y8OO");
  103. var external_wp_domReady_default = /*#__PURE__*/__webpack_require__.n(external_wp_domReady_);
  104. // EXTERNAL MODULE: external ["wp","i18n"]
  105. var external_wp_i18n_ = __webpack_require__("l3Sj");
  106. // CONCATENATED MODULE: ./node_modules/@wordpress/a11y/build-module/add-intro-text.js
  107. /**
  108. * WordPress dependencies
  109. */
  110. /**
  111. * Build the explanatory text to be placed before the aria live regions.
  112. *
  113. * This text is initially hidden from assistive technologies by using a `hidden`
  114. * HTML attribute which is then removed once a message fills the aria-live regions.
  115. *
  116. * @return {HTMLParagraphElement} The explanatory text HTML element.
  117. */
  118. function addIntroText() {
  119. const introText = document.createElement('p');
  120. introText.id = 'a11y-speak-intro-text';
  121. introText.className = 'a11y-speak-intro-text';
  122. introText.textContent = Object(external_wp_i18n_["__"])('Notifications');
  123. introText.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;');
  124. introText.setAttribute('hidden', 'hidden');
  125. const {
  126. body
  127. } = document;
  128. if (body) {
  129. body.appendChild(introText);
  130. }
  131. return introText;
  132. }
  133. // CONCATENATED MODULE: ./node_modules/@wordpress/a11y/build-module/add-container.js
  134. /**
  135. * Build the live regions markup.
  136. *
  137. * @param {string} [ariaLive] Value for the 'aria-live' attribute; default: 'polite'.
  138. *
  139. * @return {HTMLDivElement} The ARIA live region HTML element.
  140. */
  141. function addContainer(ariaLive = 'polite') {
  142. const container = document.createElement('div');
  143. container.id = `a11y-speak-${ariaLive}`;
  144. container.className = 'a11y-speak-region';
  145. 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;');
  146. container.setAttribute('aria-live', ariaLive);
  147. container.setAttribute('aria-relevant', 'additions text');
  148. container.setAttribute('aria-atomic', 'true');
  149. const {
  150. body
  151. } = document;
  152. if (body) {
  153. body.appendChild(container);
  154. }
  155. return container;
  156. }
  157. // CONCATENATED MODULE: ./node_modules/@wordpress/a11y/build-module/clear.js
  158. /**
  159. * Clears the a11y-speak-region elements and hides the explanatory text.
  160. */
  161. function clear() {
  162. const regions = document.getElementsByClassName('a11y-speak-region');
  163. const introText = document.getElementById('a11y-speak-intro-text');
  164. for (let i = 0; i < regions.length; i++) {
  165. regions[i].textContent = '';
  166. } // Make sure the explanatory text is hidden from assistive technologies.
  167. if (introText) {
  168. introText.setAttribute('hidden', 'hidden');
  169. }
  170. }
  171. // CONCATENATED MODULE: ./node_modules/@wordpress/a11y/build-module/filter-message.js
  172. let previousMessage = '';
  173. /**
  174. * Filter the message to be announced to the screenreader.
  175. *
  176. * @param {string} message The message to be announced.
  177. *
  178. * @return {string} The filtered message.
  179. */
  180. function filterMessage(message) {
  181. /*
  182. * Strip HTML tags (if any) from the message string. Ideally, messages should
  183. * be simple strings, carefully crafted for specific use with A11ySpeak.
  184. * When re-using already existing strings this will ensure simple HTML to be
  185. * stripped out and replaced with a space. Browsers will collapse multiple
  186. * spaces natively.
  187. */
  188. message = message.replace(/<[^<>]+>/g, ' ');
  189. /*
  190. * Safari + VoiceOver don't announce repeated, identical strings. We use
  191. * a `no-break space` to force them to think identical strings are different.
  192. */
  193. if (previousMessage === message) {
  194. message += '\u00A0';
  195. }
  196. previousMessage = message;
  197. return message;
  198. }
  199. // CONCATENATED MODULE: ./node_modules/@wordpress/a11y/build-module/index.js
  200. /**
  201. * WordPress dependencies
  202. */
  203. /**
  204. * Internal dependencies
  205. */
  206. /**
  207. * Create the live regions.
  208. */
  209. function setup() {
  210. const introText = document.getElementById('a11y-speak-intro-text');
  211. const containerAssertive = document.getElementById('a11y-speak-assertive');
  212. const containerPolite = document.getElementById('a11y-speak-polite');
  213. if (introText === null) {
  214. addIntroText();
  215. }
  216. if (containerAssertive === null) {
  217. addContainer('assertive');
  218. }
  219. if (containerPolite === null) {
  220. addContainer('polite');
  221. }
  222. }
  223. /**
  224. * Run setup on domReady.
  225. */
  226. external_wp_domReady_default()(setup);
  227. /**
  228. * Allows you to easily announce dynamic interface updates to screen readers using ARIA live regions.
  229. * This module is inspired by the `speak` function in `wp-a11y.js`.
  230. *
  231. * @param {string} message The message to be announced by assistive technologies.
  232. * @param {string} [ariaLive] The politeness level for aria-live; default: 'polite'.
  233. *
  234. * @example
  235. * ```js
  236. * import { speak } from '@wordpress/a11y';
  237. *
  238. * // For polite messages that shouldn't interrupt what screen readers are currently announcing.
  239. * speak( 'The message you want to send to the ARIA live region' );
  240. *
  241. * // For assertive messages that should interrupt what screen readers are currently announcing.
  242. * speak( 'The message you want to send to the ARIA live region', 'assertive' );
  243. * ```
  244. */
  245. function speak(message, ariaLive) {
  246. /*
  247. * Clear previous messages to allow repeated strings being read out and hide
  248. * the explanatory text from assistive technologies.
  249. */
  250. clear();
  251. message = filterMessage(message);
  252. const introText = document.getElementById('a11y-speak-intro-text');
  253. const containerAssertive = document.getElementById('a11y-speak-assertive');
  254. const containerPolite = document.getElementById('a11y-speak-polite');
  255. if (containerAssertive && ariaLive === 'assertive') {
  256. containerAssertive.textContent = message;
  257. } else if (containerPolite) {
  258. containerPolite.textContent = message;
  259. }
  260. /*
  261. * Make the explanatory text available to assistive technologies by removing
  262. * the 'hidden' HTML attribute.
  263. */
  264. if (introText) {
  265. introText.removeAttribute('hidden');
  266. }
  267. }
  268. /***/ }),
  269. /***/ "l3Sj":
  270. /***/ (function(module, exports) {
  271. (function() { module.exports = window["wp"]["i18n"]; }());
  272. /***/ })
  273. /******/ });