[ Index ]

PHP Cross Reference of WordPress

title

Body

[close]

/wp-includes/js/dist/ -> priority-queue.js (source)

   1  this["wp"] = this["wp"] || {}; this["wp"]["priorityQueue"] =
   2  /******/ (function(modules) { // webpackBootstrap
   3  /******/     // The module cache
   4  /******/     var installedModules = {};
   5  /******/
   6  /******/     // The require function
   7  /******/ 	function __webpack_require__(moduleId) {
   8  /******/
   9  /******/         // Check if module is in cache
  10  /******/         if(installedModules[moduleId]) {
  11  /******/             return installedModules[moduleId].exports;
  12  /******/         }
  13  /******/         // Create a new module (and put it into the cache)
  14  /******/         var module = installedModules[moduleId] = {
  15  /******/             i: moduleId,
  16  /******/             l: false,
  17  /******/             exports: {}
  18  /******/         };
  19  /******/
  20  /******/         // Execute the module function
  21  /******/         modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
  22  /******/
  23  /******/         // Flag the module as loaded
  24  /******/         module.l = true;
  25  /******/
  26  /******/         // Return the exports of the module
  27  /******/         return module.exports;
  28  /******/     }
  29  /******/
  30  /******/
  31  /******/     // expose the modules object (__webpack_modules__)
  32  /******/     __webpack_require__.m = modules;
  33  /******/
  34  /******/     // expose the module cache
  35  /******/     __webpack_require__.c = installedModules;
  36  /******/
  37  /******/     // define getter function for harmony exports
  38  /******/     __webpack_require__.d = function(exports, name, getter) {
  39  /******/         if(!__webpack_require__.o(exports, name)) {
  40  /******/             Object.defineProperty(exports, name, { enumerable: true, get: getter });
  41  /******/         }
  42  /******/     };
  43  /******/
  44  /******/     // define __esModule on exports
  45  /******/     __webpack_require__.r = function(exports) {
  46  /******/         if(typeof Symbol !== 'undefined' && Symbol.toStringTag) {
  47  /******/             Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
  48  /******/         }
  49  /******/         Object.defineProperty(exports, '__esModule', { value: true });
  50  /******/     };
  51  /******/
  52  /******/     // create a fake namespace object
  53  /******/     // mode & 1: value is a module id, require it
  54  /******/     // mode & 2: merge all properties of value into the ns
  55  /******/     // mode & 4: return value when already ns object
  56  /******/     // mode & 8|1: behave like require
  57  /******/     __webpack_require__.t = function(value, mode) {
  58  /******/         if(mode & 1) value = __webpack_require__(value);
  59  /******/         if(mode & 8) return value;
  60  /******/         if((mode & 4) && typeof value === 'object' && value && value.__esModule) return value;
  61  /******/         var ns = Object.create(null);
  62  /******/         __webpack_require__.r(ns);
  63  /******/         Object.defineProperty(ns, 'default', { enumerable: true, value: value });
  64  /******/         if(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));
  65  /******/         return ns;
  66  /******/     };
  67  /******/
  68  /******/     // getDefaultExport function for compatibility with non-harmony modules
  69  /******/     __webpack_require__.n = function(module) {
  70  /******/         var getter = module && module.__esModule ?
  71  /******/ 			function getDefault() { return module['default']; } :
  72  /******/ 			function getModuleExports() { return module; };
  73  /******/         __webpack_require__.d(getter, 'a', getter);
  74  /******/         return getter;
  75  /******/     };
  76  /******/
  77  /******/     // Object.prototype.hasOwnProperty.call
  78  /******/     __webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
  79  /******/
  80  /******/     // __webpack_public_path__
  81  /******/     __webpack_require__.p = "";
  82  /******/
  83  /******/
  84  /******/     // Load entry module and return exports
  85  /******/     return __webpack_require__(__webpack_require__.s = 451);
  86  /******/ })
  87  /************************************************************************/
  88  /******/ ({
  89  
  90  /***/ 451:
  91  /***/ (function(module, __webpack_exports__, __webpack_require__) {
  92  
  93  "use strict";
  94  __webpack_require__.r(__webpack_exports__);
  95  
  96  // CONCATENATED MODULE: ./node_modules/@wordpress/priority-queue/build-module/request-idle-callback.js
  97  /**
  98   * @return {typeof window.requestIdleCallback|typeof window.requestAnimationFrame|((callback:(timestamp:number)=>void)=>void)}
  99   */
 100  function createRequestIdleCallback() {
 101    if (typeof window === 'undefined') {
 102      return function (callback) {
 103        setTimeout(function () {
 104          return callback(Date.now());
 105        }, 0);
 106      };
 107    }
 108  
 109    return window.requestIdleCallback || window.requestAnimationFrame;
 110  }
 111  /* harmony default export */ var request_idle_callback = (createRequestIdleCallback());
 112  
 113  // CONCATENATED MODULE: ./node_modules/@wordpress/priority-queue/build-module/index.js
 114  /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "createQueue", function() { return build_module_createQueue; });
 115  /**
 116   * Internal dependencies
 117   */
 118  
 119  /**
 120   * Enqueued callback to invoke once idle time permits.
 121   *
 122   * @typedef {()=>void} WPPriorityQueueCallback
 123   */
 124  
 125  /**
 126   * An object used to associate callbacks in a particular context grouping.
 127   *
 128   * @typedef {{}} WPPriorityQueueContext
 129   */
 130  
 131  /**
 132   * Function to add callback to priority queue.
 133   *
 134   * @typedef {(element:WPPriorityQueueContext,item:WPPriorityQueueCallback)=>void} WPPriorityQueueAdd
 135   */
 136  
 137  /**
 138   * Function to flush callbacks from priority queue.
 139   *
 140   * @typedef {(element:WPPriorityQueueContext)=>boolean} WPPriorityQueueFlush
 141   */
 142  
 143  /**
 144   * Priority queue instance.
 145   *
 146   * @typedef {Object} WPPriorityQueue
 147   *
 148   * @property {WPPriorityQueueAdd}   add   Add callback to queue for context.
 149   * @property {WPPriorityQueueFlush} flush Flush queue for context.
 150   */
 151  
 152  /**
 153   * Creates a context-aware queue that only executes
 154   * the last task of a given context.
 155   *
 156   * @example
 157   *```js
 158   * import { createQueue } from '@wordpress/priority-queue';
 159   *
 160   * const queue = createQueue();
 161   *
 162   * // Context objects.
 163   * const ctx1 = {};
 164   * const ctx2 = {};
 165   *
 166   * // For a given context in the queue, only the last callback is executed.
 167   * queue.add( ctx1, () => console.log( 'This will be printed first' ) );
 168   * queue.add( ctx2, () => console.log( 'This won\'t be printed' ) );
 169   * queue.add( ctx2, () => console.log( 'This will be printed second' ) );
 170   *```
 171   *
 172   * @return {WPPriorityQueue} Queue object with `add` and `flush` methods.
 173   */
 174  
 175  var build_module_createQueue = function createQueue() {
 176    /** @type {WPPriorityQueueContext[]} */
 177    var waitingList = [];
 178    /** @type {WeakMap<WPPriorityQueueContext,WPPriorityQueueCallback>} */
 179  
 180    var elementsMap = new WeakMap();
 181    var isRunning = false;
 182    /**
 183     * Callback to process as much queue as time permits.
 184     *
 185     * @type {IdleRequestCallback & FrameRequestCallback}
 186     *
 187     * @param {IdleDeadline|number} deadline Idle callback deadline object, or
 188     *                                       animation frame timestamp.
 189     */
 190  
 191    var runWaitingList = function runWaitingList(deadline) {
 192      var hasTimeRemaining = typeof deadline === 'number' ? function () {
 193        return false;
 194      } : function () {
 195        return deadline.timeRemaining() > 0;
 196      };
 197  
 198      do {
 199        if (waitingList.length === 0) {
 200          isRunning = false;
 201          return;
 202        }
 203  
 204        var nextElement =
 205        /** @type {WPPriorityQueueContext} */
 206        waitingList.shift();
 207        var callback =
 208        /** @type {WPPriorityQueueCallback} */
 209        elementsMap.get(nextElement);
 210        callback();
 211        elementsMap.delete(nextElement);
 212      } while (hasTimeRemaining());
 213  
 214      request_idle_callback(runWaitingList);
 215    };
 216    /**
 217     * Add a callback to the queue for a given context.
 218     *
 219     * @type {WPPriorityQueueAdd}
 220     *
 221     * @param {WPPriorityQueueContext}  element Context object.
 222     * @param {WPPriorityQueueCallback} item    Callback function.
 223     */
 224  
 225  
 226    var add = function add(element, item) {
 227      if (!elementsMap.has(element)) {
 228        waitingList.push(element);
 229      }
 230  
 231      elementsMap.set(element, item);
 232  
 233      if (!isRunning) {
 234        isRunning = true;
 235        request_idle_callback(runWaitingList);
 236      }
 237    };
 238    /**
 239     * Flushes queue for a given context, returning true if the flush was
 240     * performed, or false if there is no queue for the given context.
 241     *
 242     * @type {WPPriorityQueueFlush}
 243     *
 244     * @param {WPPriorityQueueContext} element Context object.
 245     *
 246     * @return {boolean} Whether flush was performed.
 247     */
 248  
 249  
 250    var flush = function flush(element) {
 251      if (!elementsMap.has(element)) {
 252        return false;
 253      }
 254  
 255      var index = waitingList.indexOf(element);
 256      waitingList.splice(index, 1);
 257      var callback =
 258      /** @type {WPPriorityQueueCallback} */
 259      elementsMap.get(element);
 260      elementsMap.delete(element);
 261      callback();
 262      return true;
 263    };
 264  
 265    return {
 266      add: add,
 267      flush: flush
 268    };
 269  };
 270  
 271  
 272  /***/ })
 273  
 274  /******/ });


Generated: Wed Apr 8 01:00:03 2020 Cross-referenced by PHPXref 0.7.1