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/wp-includes/js/dist/ -> a11y.js (source)

   1  this["wp"] = this["wp"] || {}; this["wp"]["a11y"] =
   2  /******/ (function(modules) { // webpackBootstrap
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  87  /************************************************************************/
  88  /******/ ({
  89  
  90  /***/ "Y8OO":
  91  /***/ (function(module, exports) {
  92  
  93  (function() { module.exports = window["wp"]["domReady"]; }());
  94  
  95  /***/ }),
  96  
  97  /***/ "jncB":
  98  /***/ (function(module, __webpack_exports__, __webpack_require__) {
  99  
 100  "use strict";
 101  // ESM COMPAT FLAG
 102  __webpack_require__.r(__webpack_exports__);
 103  
 104  // EXPORTS
 105  __webpack_require__.d(__webpack_exports__, "setup", function() { return /* binding */ setup; });
 106  __webpack_require__.d(__webpack_exports__, "speak", function() { return /* binding */ speak; });
 107  
 108  // EXTERNAL MODULE: external ["wp","domReady"]
 109  var external_wp_domReady_ = __webpack_require__("Y8OO");
 110  var external_wp_domReady_default = /*#__PURE__*/__webpack_require__.n(external_wp_domReady_);
 111  
 112  // EXTERNAL MODULE: external ["wp","i18n"]
 113  var external_wp_i18n_ = __webpack_require__("l3Sj");
 114  
 115  // CONCATENATED MODULE: ./node_modules/@wordpress/a11y/build-module/add-intro-text.js
 116  /**
 117   * WordPress dependencies
 118   */
 119  
 120  /**
 121   * Build the explanatory text to be placed before the aria live regions.
 122   *
 123   * This text is initially hidden from assistive technologies by using a `hidden`
 124   * HTML attribute which is then removed once a message fills the aria-live regions.
 125   *
 126   * @return {HTMLParagraphElement} The explanatory text HTML element.
 127   */
 128  
 129  function addIntroText() {
 130    const introText = document.createElement('p');
 131    introText.id = 'a11y-speak-intro-text';
 132    introText.className = 'a11y-speak-intro-text';
 133    introText.textContent = Object(external_wp_i18n_["__"])('Notifications');
 134    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;');
 135    introText.setAttribute('hidden', 'hidden');
 136    const {
 137      body
 138    } = document;
 139  
 140    if (body) {
 141      body.appendChild(introText);
 142    }
 143  
 144    return introText;
 145  }
 146  
 147  // CONCATENATED MODULE: ./node_modules/@wordpress/a11y/build-module/add-container.js
 148  /**
 149   * Build the live regions markup.
 150   *
 151   * @param {string} [ariaLive] Value for the 'aria-live' attribute; default: 'polite'.
 152   *
 153   * @return {HTMLDivElement} The ARIA live region HTML element.
 154   */
 155  function addContainer(ariaLive = 'polite') {
 156    const container = document.createElement('div');
 157    container.id = `a11y-speak-$ariaLive}`;
 158    container.className = 'a11y-speak-region';
 159    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;');
 160    container.setAttribute('aria-live', ariaLive);
 161    container.setAttribute('aria-relevant', 'additions text');
 162    container.setAttribute('aria-atomic', 'true');
 163    const {
 164      body
 165    } = document;
 166  
 167    if (body) {
 168      body.appendChild(container);
 169    }
 170  
 171    return container;
 172  }
 173  
 174  // CONCATENATED MODULE: ./node_modules/@wordpress/a11y/build-module/clear.js
 175  /**
 176   * Clears the a11y-speak-region elements and hides the explanatory text.
 177   */
 178  function clear() {
 179    const regions = document.getElementsByClassName('a11y-speak-region');
 180    const introText = document.getElementById('a11y-speak-intro-text');
 181  
 182    for (let i = 0; i < regions.length; i++) {
 183      regions[i].textContent = '';
 184    } // Make sure the explanatory text is hidden from assistive technologies.
 185  
 186  
 187    if (introText) {
 188      introText.setAttribute('hidden', 'hidden');
 189    }
 190  }
 191  
 192  // CONCATENATED MODULE: ./node_modules/@wordpress/a11y/build-module/filter-message.js
 193  let previousMessage = '';
 194  /**
 195   * Filter the message to be announced to the screenreader.
 196   *
 197   * @param {string} message The message to be announced.
 198   *
 199   * @return {string} The filtered message.
 200   */
 201  
 202  function filterMessage(message) {
 203    /*
 204     * Strip HTML tags (if any) from the message string. Ideally, messages should
 205     * be simple strings, carefully crafted for specific use with A11ySpeak.
 206     * When re-using already existing strings this will ensure simple HTML to be
 207     * stripped out and replaced with a space. Browsers will collapse multiple
 208     * spaces natively.
 209     */
 210    message = message.replace(/<[^<>]+>/g, ' ');
 211    /*
 212     * Safari + VoiceOver don't announce repeated, identical strings. We use
 213     * a `no-break space` to force them to think identical strings are different.
 214     */
 215  
 216    if (previousMessage === message) {
 217      message += '\u00A0';
 218    }
 219  
 220    previousMessage = message;
 221    return message;
 222  }
 223  
 224  // CONCATENATED MODULE: ./node_modules/@wordpress/a11y/build-module/index.js
 225  /**
 226   * WordPress dependencies
 227   */
 228  
 229  /**
 230   * Internal dependencies
 231   */
 232  
 233  
 234  
 235  
 236  
 237  /**
 238   * Create the live regions.
 239   */
 240  
 241  function setup() {
 242    const introText = document.getElementById('a11y-speak-intro-text');
 243    const containerAssertive = document.getElementById('a11y-speak-assertive');
 244    const containerPolite = document.getElementById('a11y-speak-polite');
 245  
 246    if (introText === null) {
 247      addIntroText();
 248    }
 249  
 250    if (containerAssertive === null) {
 251      addContainer('assertive');
 252    }
 253  
 254    if (containerPolite === null) {
 255      addContainer('polite');
 256    }
 257  }
 258  /**
 259   * Run setup on domReady.
 260   */
 261  
 262  external_wp_domReady_default()(setup);
 263  /**
 264   * Allows you to easily announce dynamic interface updates to screen readers using ARIA live regions.
 265   * This module is inspired by the `speak` function in `wp-a11y.js`.
 266   *
 267   * @param {string} message  The message to be announced by assistive technologies.
 268   * @param {string} [ariaLive] The politeness level for aria-live; default: 'polite'.
 269   *
 270   * @example
 271   * ```js
 272   * import { speak } from '@wordpress/a11y';
 273   *
 274   * // For polite messages that shouldn't interrupt what screen readers are currently announcing.
 275   * speak( 'The message you want to send to the ARIA live region' );
 276   *
 277   * // For assertive messages that should interrupt what screen readers are currently announcing.
 278   * speak( 'The message you want to send to the ARIA live region', 'assertive' );
 279   * ```
 280   */
 281  
 282  function speak(message, ariaLive) {
 283    /*
 284     * Clear previous messages to allow repeated strings being read out and hide
 285     * the explanatory text from assistive technologies.
 286     */
 287    clear();
 288    message = filterMessage(message);
 289    const introText = document.getElementById('a11y-speak-intro-text');
 290    const containerAssertive = document.getElementById('a11y-speak-assertive');
 291    const containerPolite = document.getElementById('a11y-speak-polite');
 292  
 293    if (containerAssertive && ariaLive === 'assertive') {
 294      containerAssertive.textContent = message;
 295    } else if (containerPolite) {
 296      containerPolite.textContent = message;
 297    }
 298    /*
 299     * Make the explanatory text available to assistive technologies by removing
 300     * the 'hidden' HTML attribute.
 301     */
 302  
 303  
 304    if (introText) {
 305      introText.removeAttribute('hidden');
 306    }
 307  }
 308  
 309  
 310  /***/ }),
 311  
 312  /***/ "l3Sj":
 313  /***/ (function(module, exports) {
 314  
 315  (function() { module.exports = window["wp"]["i18n"]; }());
 316  
 317  /***/ })
 318  
 319  /******/ });


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