[ Index ]

PHP Cross Reference of WordPress Trunk (Updated Daily)

Search

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 = 482);
  86  /******/ })
  87  /************************************************************************/
  88  /******/ ({
  89  
  90  /***/ 482:
  91  /***/ (function(module, __webpack_exports__, __webpack_require__) {
  92  
  93  "use strict";
  94  // ESM COMPAT FLAG
  95  __webpack_require__.r(__webpack_exports__);
  96  
  97  // EXPORTS
  98  __webpack_require__.d(__webpack_exports__, "createQueue", function() { return /* binding */ build_module_createQueue; });
  99  
 100  // CONCATENATED MODULE: ./node_modules/@wordpress/priority-queue/build-module/request-idle-callback.js
 101  /**
 102   * @typedef {( timeOrDeadline: IdleDeadline | number ) => void} Callback
 103   */
 104  
 105  /**
 106   * @return {(callback: Callback) => void} RequestIdleCallback
 107   */
 108  function createRequestIdleCallback() {
 109    if (typeof window === 'undefined') {
 110      return function (callback) {
 111        setTimeout(function () {
 112          return callback(Date.now());
 113        }, 0);
 114      };
 115    }
 116  
 117    return window.requestIdleCallback || window.requestAnimationFrame;
 118  }
 119  /* harmony default export */ var request_idle_callback = (createRequestIdleCallback());
 120  
 121  // CONCATENATED MODULE: ./node_modules/@wordpress/priority-queue/build-module/index.js
 122  /**
 123   * Internal dependencies
 124   */
 125  
 126  /**
 127   * Enqueued callback to invoke once idle time permits.
 128   *
 129   * @typedef {()=>void} WPPriorityQueueCallback
 130   */
 131  
 132  /**
 133   * An object used to associate callbacks in a particular context grouping.
 134   *
 135   * @typedef {{}} WPPriorityQueueContext
 136   */
 137  
 138  /**
 139   * Function to add callback to priority queue.
 140   *
 141   * @typedef {(element:WPPriorityQueueContext,item:WPPriorityQueueCallback)=>void} WPPriorityQueueAdd
 142   */
 143  
 144  /**
 145   * Function to flush callbacks from priority queue.
 146   *
 147   * @typedef {(element:WPPriorityQueueContext)=>boolean} WPPriorityQueueFlush
 148   */
 149  
 150  /**
 151   * Reset the queue.
 152   *
 153   * @typedef {()=>void} WPPriorityQueueReset
 154   */
 155  
 156  /**
 157   * Priority queue instance.
 158   *
 159   * @typedef {Object} WPPriorityQueue
 160   *
 161   * @property {WPPriorityQueueAdd}   add   Add callback to queue for context.
 162   * @property {WPPriorityQueueFlush} flush Flush queue for context.
 163   * @property {WPPriorityQueueReset} reset Reset queue.
 164   */
 165  
 166  /**
 167   * Creates a context-aware queue that only executes
 168   * the last task of a given context.
 169   *
 170   * @example
 171   *```js
 172   * import { createQueue } from '@wordpress/priority-queue';
 173   *
 174   * const queue = createQueue();
 175   *
 176   * // Context objects.
 177   * const ctx1 = {};
 178   * const ctx2 = {};
 179   *
 180   * // For a given context in the queue, only the last callback is executed.
 181   * queue.add( ctx1, () => console.log( 'This will be printed first' ) );
 182   * queue.add( ctx2, () => console.log( 'This won\'t be printed' ) );
 183   * queue.add( ctx2, () => console.log( 'This will be printed second' ) );
 184   *```
 185   *
 186   * @return {WPPriorityQueue} Queue object with `add`, `flush` and `reset` methods.
 187   */
 188  
 189  var build_module_createQueue = function createQueue() {
 190    /** @type {WPPriorityQueueContext[]} */
 191    var waitingList = [];
 192    /** @type {WeakMap<WPPriorityQueueContext,WPPriorityQueueCallback>} */
 193  
 194    var elementsMap = new WeakMap();
 195    var isRunning = false;
 196    /**
 197     * Callback to process as much queue as time permits.
 198     *
 199     * @param {IdleDeadline|number} deadline Idle callback deadline object, or
 200     *                                       animation frame timestamp.
 201     */
 202  
 203    var runWaitingList = function runWaitingList(deadline) {
 204      var hasTimeRemaining = typeof deadline === 'number' ? function () {
 205        return false;
 206      } : function () {
 207        return deadline.timeRemaining() > 0;
 208      };
 209  
 210      do {
 211        if (waitingList.length === 0) {
 212          isRunning = false;
 213          return;
 214        }
 215  
 216        var nextElement =
 217        /** @type {WPPriorityQueueContext} */
 218        waitingList.shift();
 219        var callback =
 220        /** @type {WPPriorityQueueCallback} */
 221        elementsMap.get(nextElement); // If errors with undefined callbacks are encountered double check that all of your useSelect calls
 222        // have all dependecies set correctly in second parameter. Missing dependencies can cause unexpected
 223        // loops and race conditions in the queue.
 224  
 225        callback();
 226        elementsMap.delete(nextElement);
 227      } while (hasTimeRemaining());
 228  
 229      request_idle_callback(runWaitingList);
 230    };
 231    /**
 232     * Add a callback to the queue for a given context.
 233     *
 234     * @type {WPPriorityQueueAdd}
 235     *
 236     * @param {WPPriorityQueueContext}  element Context object.
 237     * @param {WPPriorityQueueCallback} item    Callback function.
 238     */
 239  
 240  
 241    var add = function add(element, item) {
 242      if (!elementsMap.has(element)) {
 243        waitingList.push(element);
 244      }
 245  
 246      elementsMap.set(element, item);
 247  
 248      if (!isRunning) {
 249        isRunning = true;
 250        request_idle_callback(runWaitingList);
 251      }
 252    };
 253    /**
 254     * Flushes queue for a given context, returning true if the flush was
 255     * performed, or false if there is no queue for the given context.
 256     *
 257     * @type {WPPriorityQueueFlush}
 258     *
 259     * @param {WPPriorityQueueContext} element Context object.
 260     *
 261     * @return {boolean} Whether flush was performed.
 262     */
 263  
 264  
 265    var flush = function flush(element) {
 266      if (!elementsMap.has(element)) {
 267        return false;
 268      }
 269  
 270      var index = waitingList.indexOf(element);
 271      waitingList.splice(index, 1);
 272      var callback =
 273      /** @type {WPPriorityQueueCallback} */
 274      elementsMap.get(element);
 275      elementsMap.delete(element);
 276      callback();
 277      return true;
 278    };
 279    /**
 280     * Reset the queue without running the pending callbacks.
 281     *
 282     * @type {WPPriorityQueueReset}
 283     */
 284  
 285  
 286    var reset = function reset() {
 287      waitingList = [];
 288      elementsMap = new WeakMap();
 289      isRunning = false;
 290    };
 291  
 292    return {
 293      add: add,
 294      flush: flush,
 295      reset: reset
 296    };
 297  };
 298  
 299  
 300  /***/ })
 301  
 302  /******/ });


Generated : Sun May 16 08:20:01 2021 Cross-referenced by PHPXref