a11y.js 8.7 KB

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  1. this["wp"] = this["wp"] || {}; this["wp"]["a11y"] =
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  84. /******/ // Load entry module and return exports
  85. /******/ return __webpack_require__(__webpack_require__.s = 365);
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  87. /************************************************************************/
  88. /******/ ({
  89. /***/ 217:
  90. /***/ (function(module, exports) {
  91. (function() { module.exports = this["wp"]["domReady"]; }());
  92. /***/ }),
  93. /***/ 365:
  94. /***/ (function(module, __webpack_exports__, __webpack_require__) {
  95. "use strict";
  96. __webpack_require__.r(__webpack_exports__);
  97. // EXTERNAL MODULE: external {"this":["wp","domReady"]}
  98. var external_this_wp_domReady_ = __webpack_require__(217);
  99. var external_this_wp_domReady_default = /*#__PURE__*/__webpack_require__.n(external_this_wp_domReady_);
  100. // CONCATENATED MODULE: ./node_modules/@wordpress/a11y/build-module/addContainer.js
  101. /**
  102. * Build the live regions markup.
  103. *
  104. * @param {string} ariaLive Optional. Value for the 'aria-live' attribute, default 'polite'.
  105. *
  106. * @return {Object} $container The ARIA live region jQuery object.
  107. */
  108. var addContainer = function addContainer(ariaLive) {
  109. ariaLive = ariaLive || 'polite';
  110. var container = document.createElement('div');
  111. container.id = 'a11y-speak-' + ariaLive;
  112. container.className = 'a11y-speak-region';
  113. 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;');
  114. container.setAttribute('aria-live', ariaLive);
  115. container.setAttribute('aria-relevant', 'additions text');
  116. container.setAttribute('aria-atomic', 'true');
  117. document.querySelector('body').appendChild(container);
  118. return container;
  119. };
  120. /* harmony default export */ var build_module_addContainer = (addContainer);
  121. // CONCATENATED MODULE: ./node_modules/@wordpress/a11y/build-module/clear.js
  122. /**
  123. * Clear the a11y-speak-region elements.
  124. */
  125. var clear = function clear() {
  126. var regions = document.querySelectorAll('.a11y-speak-region');
  127. for (var i = 0; i < regions.length; i++) {
  128. regions[i].textContent = '';
  129. }
  130. };
  131. /* harmony default export */ var build_module_clear = (clear);
  132. // CONCATENATED MODULE: ./node_modules/@wordpress/a11y/build-module/filterMessage.js
  133. var previousMessage = '';
  134. /**
  135. * Filter the message to be announced to the screenreader.
  136. *
  137. * @param {string} message The message to be announced.
  138. *
  139. * @return {string} The filtered message.
  140. */
  141. var filterMessage = function filterMessage(message) {
  142. /*
  143. * Strip HTML tags (if any) from the message string. Ideally, messages should
  144. * be simple strings, carefully crafted for specific use with A11ySpeak.
  145. * When re-using already existing strings this will ensure simple HTML to be
  146. * stripped out and replaced with a space. Browsers will collapse multiple
  147. * spaces natively.
  148. */
  149. message = message.replace(/<[^<>]+>/g, ' ');
  150. if (previousMessage === message) {
  151. message += "\xA0";
  152. }
  153. previousMessage = message;
  154. return message;
  155. };
  156. /* harmony default export */ var build_module_filterMessage = (filterMessage);
  157. // CONCATENATED MODULE: ./node_modules/@wordpress/a11y/build-module/index.js
  158. /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "setup", function() { return build_module_setup; });
  159. /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "speak", function() { return build_module_speak; });
  160. /**
  161. * WordPress dependencies
  162. */
  163. /**
  164. * Internal dependencies
  165. */
  166. /**
  167. * Create the live regions.
  168. */
  169. var build_module_setup = function setup() {
  170. var containerPolite = document.getElementById('a11y-speak-polite');
  171. var containerAssertive = document.getElementById('a11y-speak-assertive');
  172. if (containerPolite === null) {
  173. containerPolite = build_module_addContainer('polite');
  174. }
  175. if (containerAssertive === null) {
  176. containerAssertive = build_module_addContainer('assertive');
  177. }
  178. };
  179. /**
  180. * Run setup on domReady.
  181. */
  182. external_this_wp_domReady_default()(build_module_setup);
  183. /**
  184. * Allows you to easily announce dynamic interface updates to screen readers using ARIA live regions.
  185. * This module is inspired by the `speak` function in wp-a11y.js
  186. *
  187. * @param {string} message The message to be announced by Assistive Technologies.
  188. * @param {string} ariaLive Optional. The politeness level for aria-live. Possible values:
  189. * polite or assertive. Default polite.
  190. *
  191. * @example
  192. * ```js
  193. * import { speak } from '@wordpress/a11y';
  194. *
  195. * // For polite messages that shouldn't interrupt what screen readers are currently announcing.
  196. * speak( 'The message you want to send to the ARIA live region' );
  197. *
  198. * // For assertive messages that should interrupt what screen readers are currently announcing.
  199. * speak( 'The message you want to send to the ARIA live region', 'assertive' );
  200. * ```
  201. */
  202. var build_module_speak = function speak(message, ariaLive) {
  203. // Clear previous messages to allow repeated strings being read out.
  204. build_module_clear();
  205. message = build_module_filterMessage(message);
  206. var containerPolite = document.getElementById('a11y-speak-polite');
  207. var containerAssertive = document.getElementById('a11y-speak-assertive');
  208. if (containerAssertive && 'assertive' === ariaLive) {
  209. containerAssertive.textContent = message;
  210. } else if (containerPolite) {
  211. containerPolite.textContent = message;
  212. }
  213. };
  214. /***/ })
  215. /******/ });