src/main/resources/static/js/echarts/wordcloud2.js

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/*!
 * wordcloud2.js
 * http://timdream.org/wordcloud2.js/
 *
 * Copyright 2011 - 2013 Tim Chien
 * Released under the MIT license
 */

'use strict';

// setImmediate
if (!window.setImmediate) {
  window.setImmediate = (function setupSetImmediate() {
    return window.msSetImmediate ||
    window.webkitSetImmediate ||
    window.mozSetImmediate ||
    window.oSetImmediate ||
    (function setupSetZeroTimeout() {
      if (!window.postMessage || !window.addEventListener) {
        return null;
      }

      var callbacks = [undefined];
      var message = 'zero-timeout-message';

      // Like setTimeout, but only takes a function argument.  There's
      // no time argument (always zero) and no arguments (you have to
      // use a closure).
      var setZeroTimeout = function setZeroTimeout(callback) {
        var id = callbacks.length;
        callbacks.push(callback);
        window.postMessage(message + id.toString(36), '*');

        return id;
      };

      window.addEventListener('message', function setZeroTimeoutMessage(evt) {
        // Skipping checking event source, retarded IE confused this window
        // object with another in the presence of iframe
        if (typeof evt.data !== 'string' ||
            evt.data.substr(0, message.length) !== message/* ||
            evt.source !== window */) {
          return;
        }

        evt.stopImmediatePropagation();

        var id = parseInt(evt.data.substr(message.length), 36);
        if (!callbacks[id]) {
          return;
        }

        callbacks[id]();
        callbacks[id] = undefined;
      }, true);

      /* specify clearImmediate() here since we need the scope */
      window.clearImmediate = function clearZeroTimeout(id) {
        if (!callbacks[id]) {
          return;