"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

/*
 * File: iframeResizer.js
 * Desc: Force iframes to size to content.
 * Requires: iframeResizer.contentWindow.js to be loaded into the target frame.
 * Doc: https://github.com/davidjbradshaw/iframe-resizer
 * Author: David J. Bradshaw - dave@bradshaw.net
 * Contributor: Jure Mav - jure.mav@gmail.com
 * Contributor: Reed Dadoune - reed@dadoune.com
 */
(function (undefined) {
  'use strict';

  if (typeof window === 'undefined') return; // don't run for server side render

  var count = 0,
      logEnabled = false,
      hiddenCheckEnabled = false,
      msgHeader = 'message',
      msgHeaderLen = msgHeader.length,
      msgId = '[iFrameSizer]',
      //Must match iframe msg ID
  msgIdLen = msgId.length,
      pagePosition = null,
      requestAnimationFrame = window.requestAnimationFrame,
      resetRequiredMethods = {
    max: 1,
    scroll: 1,
    bodyScroll: 1,
    documentElementScroll: 1
  },
      settings = {},
      timer = null,
      logId = 'Host Page',
      defaults = {
    autoResize: true,
    bodyBackground: null,
    bodyMargin: null,
    bodyMarginV1: 8,
    bodyPadding: null,
    checkOrigin: true,
    inPageLinks: false,
    enablePublicMethods: true,
    heightCalculationMethod: 'bodyOffset',
    id: 'iFrameResizer',
    interval: 32,
    log: false,
    maxHeight: Infinity,
    maxWidth: Infinity,
    minHeight: 0,
    minWidth: 0,
    resizeFrom: 'parent',
    scrolling: false,
    sizeHeight: true,
    sizeWidth: false,
    warningTimeout: 5000,
    tolerance: 0,
    widthCalculationMethod: 'scroll',
    closedCallback: function closedCallback() {},
    initCallback: function initCallback() {},
    messageCallback: function messageCallback() {
      warn('MessageCallback function not defined');
    },
    resizedCallback: function resizedCallback() {},
    scrollCallback: function scrollCallback() {
      return true;
    }
  };

  function addEventListener(obj, evt, func) {
    /* istanbul ignore else */
    // Not testable in PhantonJS
    if ('addEventListener' in window) {
      obj.addEventListener(evt, func, false);
    } else if ('attachEvent' in window) {
      //IE
      obj.attachEvent('on' + evt, func);
    }
  }

  function removeEventListener(el, evt, func) {
    /* istanbul ignore else */
    // Not testable in phantonJS
    if ('removeEventListener' in window) {
      el.removeEventListener(evt, func, false);
    } else if ('detachEvent' in window) {
      //IE
      el.detachEvent('on' + evt, func);
    }
  }

  function setupRequestAnimationFrame() {
    var vendors = ['moz', 'webkit', 'o', 'ms'],
        x; // Remove vendor prefixing if prefixed and break early if not

    for (x = 0; x < vendors.length && !requestAnimationFrame; x += 1) {
      requestAnimationFrame = window[vendors[x] + 'RequestAnimationFrame'];
    }

    if (!requestAnimationFrame) {
      log('setup', 'RequestAnimationFrame not supported');
    }
  }

  function getMyID(iframeId) {
    var retStr = 'Host page: ' + iframeId;

    if (window.top !== window.self) {
      if (window.parentIFrame && window.parentIFrame.getId) {
        retStr = window.parentIFrame.getId() + ': ' + iframeId;
      } else {
        retStr = 'Nested host page: ' + iframeId;
      }
    }

    return retStr;
  }

  function formatLogHeader(iframeId) {
    return msgId + '[' + getMyID(iframeId) + ']';
  }

  function isLogEnabled(iframeId) {
    return settings[iframeId] ? settings[iframeId].log : logEnabled;
  }

  function log(iframeId, msg) {
    output('log', iframeId, msg, isLogEnabled(iframeId));
  }

  function info(iframeId, msg) {
    output('info', iframeId, msg, isLogEnabled(iframeId));
  }

  function warn(iframeId, msg) {
    output('warn', iframeId, msg, true);
  }

  function output(type, iframeId, msg, enabled) {
    if (true === enabled && 'object' === _typeof(window.console)) {
      console[type](formatLogHeader(iframeId), msg);
    }
  }

  function iFrameListener(event) {
    function resizeIFrame() {
      function resize() {
        setSize(messageData);
        setPagePosition(iframeId);
        callback('resizedCallback', messageData);
      }

      ensureInRange('Height');
      ensureInRange('Width');
      syncResize(resize, messageData, 'init');
    }

    function processMsg() {
      var data = msg.substr(msgIdLen).split(':');
      return {
        iframe: settings[data[0]] && settings[data[0]].iframe,
        id: data[0],
        height: data[1],
        width: data[2],
        type: data[3]
      };
    }

    function ensureInRange(Dimension) {
      var max = Number(settings[iframeId]['max' + Dimension]),
          min = Number(settings[iframeId]['min' + Dimension]),
          dimension = Dimension.toLowerCase(),
          size = Number(messageData[dimension]);
      log(iframeId, 'Checking ' + dimension + ' is in range ' + min + '-' + max);

      if (size < min) {
        size = min;
        log(iframeId, 'Set ' + dimension + ' to min value');
      }

      if (size > max) {
        size = max;
        log(iframeId, 'Set ' + dimension + ' to max value');
      }

      messageData[dimension] = '' + size;
    }

    function isMessageFromIFrame() {
      function checkAllowedOrigin() {
        function checkList() {
          var i = 0,
              retCode = false;
          log(iframeId, 'Checking connection is from allowed list of origins: ' + checkOrigin);

          for (; i < checkOrigin.length; i++) {
            if (checkOrigin[i] === origin) {
              retCode = true;
              break;
            }
          }

          return retCode;
        }

        function checkSingle() {
          var remoteHost = settings[iframeId] && settings[iframeId].remoteHost;
          log(iframeId, 'Checking connection is from: ' + remoteHost);
          return origin === remoteHost;
        }

        return checkOrigin.constructor === Array ? checkList() : checkSingle();
      }

      var origin = event.origin,
          checkOrigin = settings[iframeId] && settings[iframeId].checkOrigin;

      if (checkOrigin && '' + origin !== 'null' && !checkAllowedOrigin()) {
        throw new Error('Unexpected message received from: ' + origin + ' for ' + messageData.iframe.id + '. Message was: ' + event.data + '. This error can be disabled by setting the checkOrigin: false option or by providing of array of trusted domains.');
      }

      return true;
    }

    function isMessageForUs() {
      return msgId === ('' + msg).substr(0, msgIdLen) && msg.substr(msgIdLen).split(':')[0] in settings; //''+Protects against non-string msg
    }

    function isMessageFromMetaParent() {
      //Test if this message is from a parent above us. This is an ugly test, however, updating
      //the message format would break backwards compatibity.
      var retCode = messageData.type in {
        true: 1,
        false: 1,
        undefined: 1
      };

      if (retCode) {
        log(iframeId, 'Ignoring init message from meta parent page');
      }

      return retCode;
    }

    function getMsgBody(offset) {
      return msg.substr(msg.indexOf(':') + msgHeaderLen + offset);
    }

    function forwardMsgFromIFrame(msgBody) {
      log(iframeId, 'MessageCallback passed: {iframe: ' + messageData.iframe.id + ', message: ' + msgBody + '}');
      callback('messageCallback', {
        iframe: messageData.iframe,
        message: JSON.parse(msgBody)
      });
      log(iframeId, '--');
    }

    function getPageInfo() {
      var bodyPosition = document.body.getBoundingClientRect(),
          iFramePosition = messageData.iframe.getBoundingClientRect();
      return JSON.stringify({
        iframeHeight: iFramePosition.height,
        iframeWidth: iFramePosition.width,
        clientHeight: Math.max(document.documentElement.clientHeight, window.innerHeight || 0),
        clientWidth: Math.max(document.documentElement.clientWidth, window.innerWidth || 0),
        offsetTop: parseInt(iFramePosition.top - bodyPosition.top, 10),
        offsetLeft: parseInt(iFramePosition.left - bodyPosition.left, 10),
        scrollTop: window.pageYOffset,
        scrollLeft: window.pageXOffset
      });
    }

    function sendPageInfoToIframe(iframe, iframeId) {
      function debouncedTrigger() {
        trigger('Send Page Info', 'pageInfo:' + getPageInfo(), iframe, iframeId);
      }

      debounceFrameEvents(debouncedTrigger, 32, iframeId);
    }

    function startPageInfoMonitor() {
      function setListener(type, func) {
        function sendPageInfo() {
          if (settings[id]) {
            sendPageInfoToIframe(settings[id].iframe, id);
          } else {
            stop();
          }
        }

        ['scroll', 'resize'].forEach(function (evt) {
          log(id, type + evt + ' listener for sendPageInfo');
          func(window, evt, sendPageInfo);
        });
      }

      function stop() {
        setListener('Remove ', removeEventListener);
      }

      function start() {
        setListener('Add ', addEventListener);
      }

      var id = iframeId; //Create locally scoped copy of iFrame ID

      start();

      if (settings[id]) {
        settings[id].stopPageInfo = stop;
      }
    }

    function stopPageInfoMonitor() {
      if (settings[iframeId] && settings[iframeId].stopPageInfo) {
        settings[iframeId].stopPageInfo();
        delete settings[iframeId].stopPageInfo;
      }
    }

    function checkIFrameExists() {
      var retBool = true;

      if (null === messageData.iframe) {
        warn(iframeId, 'IFrame (' + messageData.id + ') not found');
        retBool = false;
      }

      return retBool;
    }

    function getElementPosition(target) {
      var iFramePosition = target.getBoundingClientRect();
      getPagePosition(iframeId);
      return {
        x: Math.floor(Number(iFramePosition.left) + Number(pagePosition.x)),
        y: Math.floor(Number(iFramePosition.top) + Number(pagePosition.y))
      };
    }

    function scrollRequestFromChild(addOffset) {
      /* istanbul ignore next */
      //Not testable in Karma
      function reposition() {
        pagePosition = newPosition;
        scrollTo();
        log(iframeId, '--');
      }

      function calcOffset() {
        return {
          x: Number(messageData.width) + offset.x,
          y: Number(messageData.height) + offset.y
        };
      }

      function scrollParent() {
        if (window.parentIFrame) {
          window.parentIFrame['scrollTo' + (addOffset ? 'Offset' : '')](newPosition.x, newPosition.y);
        } else {
          warn(iframeId, 'Unable to scroll to requested position, window.parentIFrame not found');
        }
      }

      var offset = addOffset ? getElementPosition(messageData.iframe) : {
        x: 0,
        y: 0
      },
          newPosition = calcOffset();
      log(iframeId, 'Reposition requested from iFrame (offset x:' + offset.x + ' y:' + offset.y + ')');

      if (window.top !== window.self) {
        scrollParent();
      } else {
        reposition();
      }
    }

    function scrollTo() {
      if (false !== callback('scrollCallback', pagePosition)) {
        setPagePosition(iframeId);
      } else {
        unsetPagePosition();
      }
    }

    function findTarget(location) {
      function jumpToTarget() {
        var jumpPosition = getElementPosition(target);
        log(iframeId, 'Moving to in page link (#' + hash + ') at x: ' + jumpPosition.x + ' y: ' + jumpPosition.y);
        pagePosition = {
          x: jumpPosition.x,
          y: jumpPosition.y
        };
        scrollTo();
        log(iframeId, '--');
      }

      function jumpToParent() {
        if (window.parentIFrame) {
          window.parentIFrame.moveToAnchor(hash);
        } else {
          log(iframeId, 'In page link #' + hash + ' not found and window.parentIFrame not found');
        }
      }

      var hash = location.split('#')[1] || '',
          hashData = decodeURIComponent(hash),
          target = document.getElementById(hashData) || document.getElementsByName(hashData)[0];

      if (target) {
        jumpToTarget();
      } else if (window.top !== window.self) {
        jumpToParent();
      } else {
        log(iframeId, 'In page link #' + hash + ' not found');
      }
    }

    function callback(funcName, val) {
      return chkCallback(iframeId, funcName, val);
    }

    function actionMsg() {
      if (settings[iframeId] && settings[iframeId].firstRun) firstRun();

      switch (messageData.type) {
        case 'close':
          if (settings[iframeId].closeRequestCallback) chkCallback(iframeId, 'closeRequestCallback', settings[iframeId].iframe);else closeIFrame(messageData.iframe);
          break;

        case 'message':
          forwardMsgFromIFrame(getMsgBody(6));
          break;

        case 'scrollTo':
          scrollRequestFromChild(false);
          break;

        case 'scrollToOffset':
          scrollRequestFromChild(true);
          break;

        case 'pageInfo':
          sendPageInfoToIframe(settings[iframeId] && settings[iframeId].iframe, iframeId);
          startPageInfoMonitor();
          break;

        case 'pageInfoStop':
          stopPageInfoMonitor();
          break;

        case 'inPageLink':
          findTarget(getMsgBody(9));
          break;

        case 'reset':
          resetIFrame(messageData);
          break;

        case 'init':
          resizeIFrame();
          callback('initCallback', messageData.iframe);
          break;

        default:
          resizeIFrame();
      }
    }

    function hasSettings(iframeId) {
      var retBool = true;

      if (!settings[iframeId]) {
        retBool = false;
        warn(messageData.type + ' No settings for ' + iframeId + '. Message was: ' + msg);
      }

      return retBool;
    }

    function iFrameReadyMsgReceived() {
      for (var iframeId in settings) {
        trigger('iFrame requested init', createOutgoingMsg(iframeId), document.getElementById(iframeId), iframeId);
      }
    }

    function firstRun() {
      if (settings[iframeId]) {
        settings[iframeId].firstRun = false;
      }
    }

    function clearWarningTimeout() {
      if (settings[iframeId]) {
        clearTimeout(settings[iframeId].msgTimeout);
        settings[iframeId].warningTimeout = 0;
      }
    }

    var msg = event.data,
        messageData = {},
        iframeId = null;

    if ('[iFrameResizerChild]Ready' === msg) {
      iFrameReadyMsgReceived();
    } else if (isMessageForUs()) {
      messageData = processMsg();
      iframeId = logId = messageData.id;

      if (settings[iframeId]) {
        settings[iframeId].loaded = true;
      }

      if (!isMessageFromMetaParent() && hasSettings(iframeId)) {
        log(iframeId, 'Received: ' + msg);

        if (checkIFrameExists() && isMessageFromIFrame()) {
          actionMsg();
        }
      }
    } else {
      info(iframeId, 'Ignored: ' + msg);
    }
  }

  function chkCallback(iframeId, funcName, val) {
    var func = null,
        retVal = null;

    if (settings[iframeId]) {
      func = settings[iframeId][funcName];

      if ('function' === typeof func) {
        retVal = func(val);
      } else {
        throw new TypeError(funcName + ' on iFrame[' + iframeId + '] is not a function');
      }
    }

    return retVal;
  }

  function removeIframeListeners(iframe) {
    var iframeId = iframe.id;
    delete settings[iframeId];
  }

  function closeIFrame(iframe) {
    var iframeId = iframe.id;
    log(iframeId, 'Removing iFrame: ' + iframeId);

    try {
      // Catch race condition error with React
      if (iframe.parentNode) {
        iframe.parentNode.removeChild(iframe);
      }
    } catch (e) {}

    chkCallback(iframeId, 'closedCallback', iframeId);
    log(iframeId, '--');
    removeIframeListeners(iframe);
  }

  function getPagePosition(iframeId) {
    if (null === pagePosition) {
      pagePosition = {
        x: window.pageXOffset !== undefined ? window.pageXOffset : document.documentElement.scrollLeft,
        y: window.pageYOffset !== undefined ? window.pageYOffset : document.documentElement.scrollTop
      };
      log(iframeId, 'Get page position: ' + pagePosition.x + ',' + pagePosition.y);
    }
  }

  function setPagePosition(iframeId) {
    if (null !== pagePosition) {
      window.scrollTo(pagePosition.x, pagePosition.y);
      log(iframeId, 'Set page position: ' + pagePosition.x + ',' + pagePosition.y);
      unsetPagePosition();
    }
  }

  function unsetPagePosition() {
    pagePosition = null;
  }

  function resetIFrame(messageData) {
    function reset() {
      setSize(messageData);
      trigger('reset', 'reset', messageData.iframe, messageData.id);
    }

    log(messageData.id, 'Size reset requested by ' + ('init' === messageData.type ? 'host page' : 'iFrame'));
    getPagePosition(messageData.id);
    syncResize(reset, messageData, 'reset');
  }

  function setSize(messageData) {
    function setDimension(dimension) {
      if (!messageData.id) {
        log('undefined', 'messageData id not set');
        return;
      }

      messageData.iframe.style[dimension] = messageData[dimension] + 'px';
      log(messageData.id, 'IFrame (' + iframeId + ') ' + dimension + ' set to ' + messageData[dimension] + 'px');
    }

    function chkZero(dimension) {
      //FireFox sets dimension of hidden iFrames to zero.
      //So if we detect that set up an event to check for
      //when iFrame becomes visible.

      /* istanbul ignore next */
      //Not testable in PhantomJS
      if (!hiddenCheckEnabled && '0' === messageData[dimension]) {
        hiddenCheckEnabled = true;
        log(iframeId, 'Hidden iFrame detected, creating visibility listener');
        fixHiddenIFrames();
      }
    }

    function processDimension(dimension) {
      setDimension(dimension);
      chkZero(dimension);
    }

    var iframeId = messageData.iframe.id;

    if (settings[iframeId]) {
      if (settings[iframeId].sizeHeight) {
        processDimension('height');
      }

      if (settings[iframeId].sizeWidth) {
        processDimension('width');
      }
    }
  }

  function syncResize(func, messageData, doNotSync) {
    /* istanbul ignore if */
    //Not testable in PhantomJS
    if (doNotSync !== messageData.type && requestAnimationFrame) {
      log(messageData.id, 'Requesting animation frame');
      requestAnimationFrame(func);
    } else {
      func();
    }
  }

  function trigger(calleeMsg, msg, iframe, id, noResponseWarning) {
    function postMessageToIFrame() {
      var target = settings[id] && settings[id].targetOrigin;
      log(id, '[' + calleeMsg + '] Sending msg to iframe[' + id + '] (' + msg + ') targetOrigin: ' + target);
      iframe.contentWindow.postMessage(msgId + msg, target);
    }

    function iFrameNotFound() {
      warn(id, '[' + calleeMsg + '] IFrame(' + id + ') not found');
    }

    function chkAndSend() {
      if (iframe && 'contentWindow' in iframe && null !== iframe.contentWindow) {
        //Null test for PhantomJS
        postMessageToIFrame();
      } else {
        iFrameNotFound();
      }
    }

    function warnOnNoResponse() {
      function warning() {
        if (settings[id] && !settings[id].loaded && !errorShown) {
          errorShown = true;
          warn(id, 'IFrame has not responded within ' + settings[id].warningTimeout / 1000 + ' seconds. Check iFrameResizer.contentWindow.js has been loaded in iFrame. This message can be ignored if everything is working, or you can set the warningTimeout option to a higher value or zero to suppress this warning.');
        }
      }

      if (!!noResponseWarning && settings[id] && !!settings[id].warningTimeout) {
        settings[id].msgTimeout = setTimeout(warning, settings[id].warningTimeout);
      }
    }

    var errorShown = false;
    id = id || iframe.id;

    if (settings[id]) {
      chkAndSend();
      warnOnNoResponse();
    }
  }

  function createOutgoingMsg(iframeId) {
    return iframeId + ':' + settings[iframeId].bodyMarginV1 + ':' + settings[iframeId].sizeWidth + ':' + settings[iframeId].log + ':' + settings[iframeId].interval + ':' + settings[iframeId].enablePublicMethods + ':' + settings[iframeId].autoResize + ':' + settings[iframeId].bodyMargin + ':' + settings[iframeId].heightCalculationMethod + ':' + settings[iframeId].bodyBackground + ':' + settings[iframeId].bodyPadding + ':' + settings[iframeId].tolerance + ':' + settings[iframeId].inPageLinks + ':' + settings[iframeId].resizeFrom + ':' + settings[iframeId].widthCalculationMethod;
  }

  function setupIFrame(iframe, options) {
    function setLimits() {
      function addStyle(style) {
        if (Infinity !== settings[iframeId][style] && 0 !== settings[iframeId][style]) {
          iframe.style[style] = settings[iframeId][style] + 'px';
          log(iframeId, 'Set ' + style + ' = ' + settings[iframeId][style] + 'px');
        }
      }

      function chkMinMax(dimension) {
        if (settings[iframeId]['min' + dimension] > settings[iframeId]['max' + dimension]) {
          throw new Error('Value for min' + dimension + ' can not be greater than max' + dimension);
        }
      }

      chkMinMax('Height');
      chkMinMax('Width');
      addStyle('maxHeight');
      addStyle('minHeight');
      addStyle('maxWidth');
      addStyle('minWidth');
    }

    function newId() {
      var id = options && options.id || defaults.id + count++;

      if (null !== document.getElementById(id)) {
        id = id + count++;
      }

      return id;
    }

    function ensureHasId(iframeId) {
      logId = iframeId;

      if ('' === iframeId) {
        iframe.id = iframeId = newId();
        logEnabled = (options || {}).log;
        logId = iframeId;
        log(iframeId, 'Added missing iframe ID: ' + iframeId + ' (' + iframe.src + ')');
      }

      return iframeId;
    }

    function setScrolling() {
      log(iframeId, 'IFrame scrolling ' + (settings[iframeId] && settings[iframeId].scrolling ? 'enabled' : 'disabled') + ' for ' + iframeId);
      iframe.style.overflow = false === (settings[iframeId] && settings[iframeId].scrolling) ? 'hidden' : 'auto';

      switch (settings[iframeId] && settings[iframeId].scrolling) {
        case 'omit':
          break;

        case true:
          iframe.scrolling = 'yes';
          break;

        case false:
          iframe.scrolling = 'no';
          break;

        default:
          iframe.scrolling = settings[iframeId] ? settings[iframeId].scrolling : 'no';
      }
    } //The V1 iFrame script expects an int, where as in V2 expects a CSS
    //string value such as '1px 3em', so if we have an int for V2, set V1=V2
    //and then convert V2 to a string PX value.


    function setupBodyMarginValues() {
      if ('number' === typeof (settings[iframeId] && settings[iframeId].bodyMargin) || '0' === (settings[iframeId] && settings[iframeId].bodyMargin)) {
        settings[iframeId].bodyMarginV1 = settings[iframeId].bodyMargin;
        settings[iframeId].bodyMargin = '' + settings[iframeId].bodyMargin + 'px';
      }
    }

    function checkReset() {
      // Reduce scope of firstRun to function, because IE8's JS execution
      // context stack is borked and this value gets externally
      // changed midway through running this function!!!
      var firstRun = settings[iframeId] && settings[iframeId].firstRun,
          resetRequertMethod = settings[iframeId] && settings[iframeId].heightCalculationMethod in resetRequiredMethods;

      if (!firstRun && resetRequertMethod) {
        resetIFrame({
          iframe: iframe,
          height: 0,
          width: 0,
          type: 'init'
        });
      }
    }

    function setupIFrameObject() {
      if (Function.prototype.bind && settings[iframeId]) {
        //Ignore unpolyfilled IE8.
        settings[iframeId].iframe.iFrameResizer = {
          close: closeIFrame.bind(null, settings[iframeId].iframe),
          removeListeners: removeIframeListeners.bind(null, settings[iframeId].iframe),
          resize: trigger.bind(null, 'Window resize', 'resize', settings[iframeId].iframe),
          moveToAnchor: function moveToAnchor(anchor) {
            trigger('Move to anchor', 'moveToAnchor:' + anchor, settings[iframeId].iframe, iframeId);
          },
          sendMessage: function sendMessage(message) {
            message = JSON.stringify(message);
            trigger('Send Message', 'message:' + message, settings[iframeId].iframe, iframeId);
          }
        };
      }
    } //We have to call trigger twice, as we can not be sure if all
    //iframes have completed loading when this code runs. The
    //event listener also catches the page changing in the iFrame.


    function init(msg) {
      function iFrameLoaded() {
        trigger('iFrame.onload', msg, iframe, undefined, true);
        checkReset();
      }

      addEventListener(iframe, 'load', iFrameLoaded);
      trigger('init', msg, iframe, undefined, true);
    }

    function checkOptions(options) {
      if ('object' !== _typeof(options)) {
        throw new TypeError('Options is not an object');
      }
    }

    function copyOptions(options) {
      for (var option in defaults) {
        if (defaults.hasOwnProperty(option)) {
          settings[iframeId][option] = options.hasOwnProperty(option) ? options[option] : defaults[option];
        }
      }
    }

    function getTargetOrigin(remoteHost) {
      return '' === remoteHost || 'file://' === remoteHost ? '*' : remoteHost;
    }

    function processOptions(options) {
      options = options || {};
      settings[iframeId] = {
        firstRun: true,
        iframe: iframe,
        remoteHost: iframe.src.split('/').slice(0, 3).join('/')
      };
      checkOptions(options);
      copyOptions(options);

      if (settings[iframeId]) {
        settings[iframeId].targetOrigin = true === settings[iframeId].checkOrigin ? getTargetOrigin(settings[iframeId].remoteHost) : '*';
      }
    }

    function beenHere() {
      return iframeId in settings && 'iFrameResizer' in iframe;
    }

    var iframeId = ensureHasId(iframe.id);

    if (!beenHere()) {
      processOptions(options);
      setScrolling();
      setLimits();
      setupBodyMarginValues();
      init(createOutgoingMsg(iframeId));
      setupIFrameObject();
    } else {
      warn(iframeId, 'Ignored iFrame, already setup.');
    }
  }

  function debouce(fn, time) {
    if (null === timer) {
      timer = setTimeout(function () {
        timer = null;
        fn();
      }, time);
    }
  }

  var frameTimer = {};

  function debounceFrameEvents(fn, time, frameId) {
    if (!frameTimer[frameId]) {
      frameTimer[frameId] = setTimeout(function () {
        frameTimer[frameId] = null;
        fn();
      }, time);
    }
  } //Not testable in PhantomJS

  /* istanbul ignore next */


  function fixHiddenIFrames() {
    function checkIFrames() {
      function checkIFrame(settingId) {
        function chkDimension(dimension) {
          return '0px' === (settings[settingId] && settings[settingId].iframe.style[dimension]);
        }

        function isVisible(el) {
          return null !== el.offsetParent;
        }

        if (settings[settingId] && isVisible(settings[settingId].iframe) && (chkDimension('height') || chkDimension('width'))) {
          trigger('Visibility change', 'resize', settings[settingId].iframe, settingId);
        }
      }

      for (var settingId in settings) {
        checkIFrame(settingId);
      }
    }

    function mutationObserved(mutations) {
      log('window', 'Mutation observed: ' + mutations[0].target + ' ' + mutations[0].type);
      debouce(checkIFrames, 16);
    }

    function createMutationObserver() {
      var target = document.querySelector('body'),
          config = {
        attributes: true,
        attributeOldValue: false,
        characterData: true,
        characterDataOldValue: false,
        childList: true,
        subtree: true
      },
          observer = new MutationObserver(mutationObserved);
      observer.observe(target, config);
    }

    var MutationObserver = window.MutationObserver || window.WebKitMutationObserver;
    if (MutationObserver) createMutationObserver();
  }

  function resizeIFrames(event) {
    function resize() {
      sendTriggerMsg('Window ' + event, 'resize');
    }

    log('window', 'Trigger event: ' + event);
    debouce(resize, 16);
  } //Not testable in PhantomJS

  /* istanbul ignore next */


  function tabVisible() {
    function resize() {
      sendTriggerMsg('Tab Visable', 'resize');
    }

    if ('hidden' !== document.visibilityState) {
      log('document', 'Trigger event: Visiblity change');
      debouce(resize, 16);
    }
  }

  function sendTriggerMsg(eventName, event) {
    function isIFrameResizeEnabled(iframeId) {
      return settings[iframeId] && 'parent' === settings[iframeId].resizeFrom && settings[iframeId].autoResize && !settings[iframeId].firstRun;
    }

    for (var iframeId in settings) {
      if (isIFrameResizeEnabled(iframeId)) {
        trigger(eventName, event, document.getElementById(iframeId), iframeId);
      }
    }
  }

  function setupEventListeners() {
    addEventListener(window, 'message', iFrameListener);
    addEventListener(window, 'resize', function () {
      resizeIFrames('resize');
    });
    addEventListener(document, 'visibilitychange', tabVisible);
    addEventListener(document, '-webkit-visibilitychange', tabVisible); //Andriod 4.4

    addEventListener(window, 'focusin', function () {
      resizeIFrames('focus');
    }); //IE8-9

    addEventListener(window, 'focus', function () {
      resizeIFrames('focus');
    });
  }

  function factory() {
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      function chkType() {
        if (!element.tagName) {
          throw new TypeError('Object is not a valid DOM element');
        } else if ('IFRAME' !== element.tagName.toUpperCase()) {
          throw new TypeError('Expected <IFRAME> tag, found <' + element.tagName + '>');
        }
      }

      if (element) {
        chkType();
        setupIFrame(element, options);
        iFrames.push(element);
      }
    }

    function warnDeprecatedOptions(options) {
      if (options && options.enablePublicMethods) {
        warn('enablePublicMethods option has been removed, public methods are now always available in the iFrame');
      }
    }

    var iFrames;
    setupRequestAnimationFrame();
    setupEventListeners();
    return function iFrameResizeF(options, target) {
      iFrames = []; //Only return iFrames past in on this call

      warnDeprecatedOptions(options);

      switch (_typeof(target)) {
        case 'undefined':
        case 'string':
          Array.prototype.forEach.call(document.querySelectorAll(target || 'iframe'), init.bind(undefined, options));
          break;

        case 'object':
          init(options, target);
          break;

        default:
          throw new TypeError('Unexpected data type (' + _typeof(target) + ')');
      }

      return iFrames;
    };
  }

  function createJQueryPublicMethod($) {
    if (!$.fn) {
      info('', 'Unable to bind to jQuery, it is not fully loaded.');
    } else if (!$.fn.iFrameResize) {
      $.fn.iFrameResize = function $iFrameResizeF(options) {
        function init(index, element) {
          setupIFrame(element, options);
        }

        return this.filter('iframe').each(init).end();
      };
    }
  }

  if (window.jQuery) {
    createJQueryPublicMethod(window.jQuery);
  }

  if (typeof define === 'function' && define.amd) {
    define([], factory);
  } else if ((typeof module === "undefined" ? "undefined" : _typeof(module)) === 'object' && _typeof(module.exports) === 'object') {
    //Node for browserfy
    module.exports = factory();
  } else {
    window.iFrameResize = window.iFrameResize || factory();
  }
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