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* File: iframeResizer.js\n * Desc: Force iframes to size to content.\n * Requires: iframeResizer.contentWindow.js to be loaded into the target frame.\n * Doc: https://github.com/davidjbradshaw/iframe-resizer\n * Author: David J. Bradshaw - dave@bradshaw.net\n * Contributor: Jure Mav - jure.mav@gmail.com\n * Contributor: Reed Dadoune - reed@dadoune.com\n */\n\n\n;(function(undefined) {\n 'use strict';\n\n if(typeof window === 'undefined') return; // don't run for server side render\n\n var\n count = 0,\n logEnabled = false,\n hiddenCheckEnabled = false,\n msgHeader = 'message',\n msgHeaderLen = msgHeader.length,\n msgId = '[iFrameSizer]', //Must match iframe msg ID\n msgIdLen = msgId.length,\n pagePosition = null,\n requestAnimationFrame = window.requestAnimationFrame,\n resetRequiredMethods = {max:1,scroll:1,bodyScroll:1,documentElementScroll:1},\n settings = {},\n timer = null,\n logId = 'Host Page',\n\n defaults = {\n autoResize : true,\n bodyBackground : null,\n bodyMargin : null,\n bodyMarginV1 : 8,\n bodyPadding : null,\n checkOrigin : true,\n inPageLinks : false,\n enablePublicMethods : true,\n heightCalculationMethod : 'bodyOffset',\n id : 'iFrameResizer',\n interval : 32,\n log : false,\n maxHeight : Infinity,\n maxWidth : Infinity,\n minHeight : 0,\n minWidth : 0,\n resizeFrom : 'parent',\n scrolling : false,\n sizeHeight : true,\n sizeWidth : false,\n warningTimeout : 5000,\n tolerance : 0,\n widthCalculationMethod : 'scroll',\n closedCallback : function() {},\n initCallback : function() {},\n messageCallback : function() {warn('MessageCallback function not defined');},\n resizedCallback : function() {},\n scrollCallback : function() {return true;}\n };\n\n function addEventListener(obj,evt,func) {\n /* istanbul ignore else */ // Not testable in PhantonJS\n if ('addEventListener' in window) {\n obj.addEventListener(evt,func, false);\n } else if ('attachEvent' in window) {//IE\n obj.attachEvent('on'+evt,func);\n }\n }\n\n function removeEventListener(el,evt,func) {\n /* istanbul ignore else */ // Not testable in phantonJS\n if ('removeEventListener' in window) {\n el.removeEventListener(evt,func, false);\n } else if ('detachEvent' in window) { //IE\n el.detachEvent('on'+evt,func);\n }\n }\n\n function setupRequestAnimationFrame() {\n var\n vendors = ['moz', 'webkit', 'o', 'ms'],\n x;\n\n // Remove vendor prefixing if prefixed and break early if not\n for (x = 0; x < vendors.length && !requestAnimationFrame; x += 1) {\n requestAnimationFrame = window[vendors[x] + 'RequestAnimationFrame'];\n }\n\n if (!(requestAnimationFrame)) {\n log('setup','RequestAnimationFrame not supported');\n }\n }\n\n function getMyID(iframeId) {\n var retStr = 'Host page: '+iframeId;\n\n if (window.top !== window.self) {\n if (window.parentIFrame && window.parentIFrame.getId) {\n retStr = window.parentIFrame.getId()+': '+iframeId;\n } else {\n retStr = 'Nested host page: '+iframeId;\n }\n }\n\n return retStr;\n }\n\n function formatLogHeader(iframeId) {\n return msgId + '[' + getMyID(iframeId) + ']';\n }\n\n function isLogEnabled(iframeId) {\n return settings[iframeId] ? settings[iframeId].log : logEnabled;\n }\n\n function log(iframeId,msg) {\n output('log',iframeId,msg,isLogEnabled(iframeId));\n }\n\n function info(iframeId,msg) {\n output('info',iframeId,msg,isLogEnabled(iframeId));\n }\n\n function warn(iframeId,msg) {\n output('warn',iframeId,msg,true);\n }\n\n function output(type,iframeId,msg,enabled) {\n if (true === enabled && 'object' === typeof window.console) {\n console[type](formatLogHeader(iframeId),msg);\n }\n }\n\n function iFrameListener(event) {\n function resizeIFrame() {\n function resize() {\n setSize(messageData);\n setPagePosition(iframeId);\n callback('resizedCallback',messageData);\n }\n\n ensureInRange('Height');\n ensureInRange('Width');\n\n syncResize(resize,messageData,'init');\n }\n\n function processMsg() {\n var data = msg.substr(msgIdLen).split(':');\n\n return {\n iframe: settings[data[0]] && settings[data[0]].iframe,\n id: data[0],\n height: data[1],\n width: data[2],\n type: data[3]\n };\n }\n\n function ensureInRange(Dimension) {\n var\n max = Number(settings[iframeId]['max' + Dimension]),\n min = Number(settings[iframeId]['min' + Dimension]),\n dimension = Dimension.toLowerCase(),\n size = Number(messageData[dimension]);\n\n log(iframeId,'Checking ' + dimension + ' is in range ' + min + '-' + max);\n\n if (sizemax) {\n size=max;\n log(iframeId,'Set ' + dimension + ' to max value');\n }\n\n messageData[dimension] = '' + size;\n }\n\n\n function isMessageFromIFrame() {\n function checkAllowedOrigin() {\n function checkList() {\n var\n i = 0,\n retCode = false;\n\n log(iframeId,'Checking connection is from allowed list of origins: ' + checkOrigin);\n\n for (; i < checkOrigin.length; i++) {\n if (checkOrigin[i] === origin) {\n retCode = true;\n break;\n }\n }\n return retCode;\n }\n\n function checkSingle() {\n var remoteHost = settings[iframeId] && settings[iframeId].remoteHost;\n log(iframeId,'Checking connection is from: '+remoteHost);\n return origin === remoteHost;\n }\n\n return checkOrigin.constructor === Array ? checkList() : checkSingle();\n }\n\n var\n origin = event.origin,\n checkOrigin = settings[iframeId] && settings[iframeId].checkOrigin;\n\n if (checkOrigin && (''+origin !== 'null') && !checkAllowedOrigin()) {\n throw new Error(\n 'Unexpected message received from: ' + origin +\n ' for ' + messageData.iframe.id +\n '. Message was: ' + event.data +\n '. This error can be disabled by setting the checkOrigin: false option or by providing of array of trusted domains.'\n );\n }\n\n return true;\n }\n\n function isMessageForUs() {\n return msgId === (('' + msg).substr(0,msgIdLen)) && (msg.substr(msgIdLen).split(':')[0] in settings); //''+Protects against non-string msg\n }\n\n function isMessageFromMetaParent() {\n //Test if this message is from a parent above us. This is an ugly test, however, updating\n //the message format would break backwards compatibity.\n var retCode = messageData.type in {'true':1,'false':1,'undefined':1};\n\n if (retCode) {\n log(iframeId,'Ignoring init message from meta parent page');\n }\n\n return retCode;\n }\n\n function getMsgBody(offset) {\n return msg.substr(msg.indexOf(':')+msgHeaderLen+offset);\n }\n\n function forwardMsgFromIFrame(msgBody) {\n log(iframeId,'MessageCallback passed: {iframe: '+ messageData.iframe.id + ', message: ' + msgBody + '}');\n callback('messageCallback',{\n iframe: messageData.iframe,\n message: JSON.parse(msgBody)\n });\n log(iframeId,'--');\n }\n\n function getPageInfo() {\n var\n bodyPosition = document.body.getBoundingClientRect(),\n iFramePosition = messageData.iframe.getBoundingClientRect();\n\n return JSON.stringify({\n iframeHeight: iFramePosition.height,\n iframeWidth: iFramePosition.width,\n clientHeight: Math.max(document.documentElement.clientHeight, window.innerHeight || 0),\n clientWidth: Math.max(document.documentElement.clientWidth, window.innerWidth || 0),\n offsetTop: parseInt(iFramePosition.top - bodyPosition.top, 10),\n offsetLeft: parseInt(iFramePosition.left - bodyPosition.left, 10),\n scrollTop: window.pageYOffset,\n scrollLeft: window.pageXOffset\n });\n }\n\n function sendPageInfoToIframe(iframe,iframeId) {\n function debouncedTrigger() {\n trigger(\n 'Send Page Info',\n 'pageInfo:' + getPageInfo(),\n iframe,\n iframeId\n );\n }\n debounceFrameEvents(debouncedTrigger,32,iframeId);\n }\n\n\n function startPageInfoMonitor() {\n function setListener(type,func) {\n function sendPageInfo() {\n if (settings[id]) {\n sendPageInfoToIframe(settings[id].iframe,id);\n } else {\n stop();\n }\n }\n\n ['scroll','resize'].forEach(function(evt) {\n log(id, type + evt + ' listener for sendPageInfo');\n func(window,evt,sendPageInfo);\n });\n }\n\n function stop() {\n setListener('Remove ', removeEventListener);\n }\n\n function start() {\n setListener('Add ', addEventListener);\n }\n\n var id = iframeId; //Create locally scoped copy of iFrame ID\n\n start();\n\n if (settings[id]) {\n settings[id].stopPageInfo = stop;\n }\n }\n\n function stopPageInfoMonitor() {\n if (settings[iframeId] && settings[iframeId].stopPageInfo) {\n settings[iframeId].stopPageInfo();\n delete settings[iframeId].stopPageInfo;\n }\n }\n\n function checkIFrameExists() {\n var retBool = true;\n\n if (null === messageData.iframe) {\n warn(iframeId,'IFrame ('+messageData.id+') not found');\n retBool = false;\n }\n return retBool;\n }\n\n function getElementPosition(target) {\n var iFramePosition = target.getBoundingClientRect();\n\n getPagePosition(iframeId);\n\n return {\n x: Math.floor( Number(iFramePosition.left) + Number(pagePosition.x) ),\n y: Math.floor( Number(iFramePosition.top) + Number(pagePosition.y) )\n };\n }\n\n function scrollRequestFromChild(addOffset) {\n /* istanbul ignore next */ //Not testable in Karma\n function reposition() {\n pagePosition = newPosition;\n scrollTo();\n log(iframeId,'--');\n }\n\n function calcOffset() {\n return {\n x: Number(messageData.width) + offset.x,\n y: Number(messageData.height) + offset.y\n };\n }\n\n function scrollParent() {\n if (window.parentIFrame) {\n window.parentIFrame['scrollTo'+(addOffset?'Offset':'')](newPosition.x,newPosition.y);\n } else {\n warn(iframeId,'Unable to scroll to requested position, window.parentIFrame not found');\n }\n }\n\n var\n offset = addOffset ? getElementPosition(messageData.iframe) : {x:0,y:0},\n newPosition = calcOffset();\n\n log(iframeId,'Reposition requested from iFrame (offset x:'+offset.x+' y:'+offset.y+')');\n\n if(window.top !== window.self) {\n scrollParent();\n } else {\n reposition();\n }\n }\n\n function scrollTo() {\n if (false !== callback('scrollCallback',pagePosition)) {\n setPagePosition(iframeId);\n } else {\n unsetPagePosition();\n }\n }\n\n function findTarget(location) {\n function jumpToTarget() {\n var jumpPosition = getElementPosition(target);\n\n log(iframeId,'Moving to in page link (#'+hash+') at x: '+jumpPosition.x+' y: '+jumpPosition.y);\n pagePosition = {\n x: jumpPosition.x,\n y: jumpPosition.y\n };\n\n scrollTo();\n log(iframeId,'--');\n }\n\n function jumpToParent() {\n if (window.parentIFrame) {\n window.parentIFrame.moveToAnchor(hash);\n } else {\n log(iframeId,'In page link #'+hash+' not found and window.parentIFrame not found');\n }\n }\n\n var\n hash = location.split('#')[1] || '',\n hashData = decodeURIComponent(hash),\n target = document.getElementById(hashData) || document.getElementsByName(hashData)[0];\n\n if (target) {\n jumpToTarget();\n } else if(window.top!==window.self) {\n jumpToParent();\n } else {\n log(iframeId,'In page link #'+hash+' not found');\n }\n }\n\n function callback(funcName,val) {\n return chkCallback(iframeId,funcName,val);\n }\n\n function actionMsg() {\n\n if(settings[iframeId] && settings[iframeId].firstRun) firstRun();\n\n switch(messageData.type) {\n case 'close':\n if(settings[iframeId].closeRequestCallback) chkCallback(iframeId, 'closeRequestCallback', settings[iframeId].iframe);\n else closeIFrame(messageData.iframe);\n break;\n case 'message':\n forwardMsgFromIFrame(getMsgBody(6));\n break;\n case 'scrollTo':\n scrollRequestFromChild(false);\n break;\n case 'scrollToOffset':\n scrollRequestFromChild(true);\n break;\n case 'pageInfo':\n sendPageInfoToIframe(settings[iframeId] && settings[iframeId].iframe,iframeId);\n startPageInfoMonitor();\n break;\n case 'pageInfoStop':\n stopPageInfoMonitor();\n break;\n case 'inPageLink':\n findTarget(getMsgBody(9));\n break;\n case 'reset':\n resetIFrame(messageData);\n break;\n case 'init':\n resizeIFrame();\n callback('initCallback',messageData.iframe);\n break;\n default:\n resizeIFrame();\n }\n }\n\n function hasSettings(iframeId) {\n var retBool = true;\n\n if (!settings[iframeId]) {\n retBool = false;\n warn(messageData.type + ' No settings for ' + iframeId + '. Message was: ' + msg);\n }\n\n return retBool;\n }\n\n function iFrameReadyMsgReceived() {\n for (var iframeId in settings) {\n trigger('iFrame requested init',createOutgoingMsg(iframeId),document.getElementById(iframeId),iframeId);\n }\n }\n\n function firstRun() {\n if (settings[iframeId]) {\n settings[iframeId].firstRun = false;\n }\n }\n\n function clearWarningTimeout() {\n if (settings[iframeId]) {\n clearTimeout(settings[iframeId].msgTimeout);\n settings[iframeId].warningTimeout = 0;\n }\n }\n\n var\n msg = event.data,\n messageData = {},\n iframeId = null;\n\n if('[iFrameResizerChild]Ready' === msg) {\n iFrameReadyMsgReceived();\n } else if (isMessageForUs()) {\n messageData = processMsg();\n iframeId = logId = messageData.id;\n if (settings[iframeId]) {\n settings[iframeId].loaded = true;\n }\n\n if (!isMessageFromMetaParent() && hasSettings(iframeId)) {\n log(iframeId,'Received: '+msg);\n\n if ( checkIFrameExists() && isMessageFromIFrame() ) {\n actionMsg();\n }\n }\n } else {\n info(iframeId,'Ignored: '+msg);\n }\n\n }\n\n\n function chkCallback(iframeId,funcName,val) {\n var\n func = null,\n retVal = null;\n\n if(settings[iframeId]) {\n func = settings[iframeId][funcName];\n\n if( 'function' === typeof func) {\n retVal = func(val);\n } else {\n throw new TypeError(funcName+' on iFrame['+iframeId+'] is not a function');\n }\n }\n\n return retVal;\n }\n\n function closeIFrame(iframe) {\n var iframeId = iframe.id;\n\n log(iframeId,'Removing iFrame: '+iframeId);\n if (iframe.parentNode) { iframe.parentNode.removeChild(iframe); }\n chkCallback(iframeId,'closedCallback',iframeId);\n log(iframeId,'--');\n delete settings[iframeId];\n }\n\n function getPagePosition(iframeId) {\n if(null === pagePosition) {\n pagePosition = {\n x: (window.pageXOffset !== undefined) ? window.pageXOffset : document.documentElement.scrollLeft,\n y: (window.pageYOffset !== undefined) ? window.pageYOffset : document.documentElement.scrollTop\n };\n log(iframeId,'Get page position: '+pagePosition.x+','+pagePosition.y);\n }\n }\n\n function setPagePosition(iframeId) {\n if(null !== pagePosition) {\n window.scrollTo(pagePosition.x,pagePosition.y);\n log(iframeId,'Set page position: '+pagePosition.x+','+pagePosition.y);\n unsetPagePosition();\n }\n }\n\n function unsetPagePosition() {\n pagePosition = null;\n }\n\n function resetIFrame(messageData) {\n function reset() {\n setSize(messageData);\n trigger('reset','reset',messageData.iframe,messageData.id);\n }\n\n log(messageData.id,'Size reset requested by '+('init'===messageData.type?'host page':'iFrame'));\n getPagePosition(messageData.id);\n syncResize(reset,messageData,'reset');\n }\n\n function setSize(messageData) {\n function setDimension(dimension) {\n messageData.iframe.style[dimension] = messageData[dimension] + 'px';\n log(\n messageData.id,\n 'IFrame (' + iframeId +\n ') ' + dimension +\n ' set to ' + messageData[dimension] + 'px'\n );\n }\n\n function chkZero(dimension) {\n //FireFox sets dimension of hidden iFrames to zero.\n //So if we detect that set up an event to check for\n //when iFrame becomes visible.\n\n /* istanbul ignore next */ //Not testable in PhantomJS\n if (!hiddenCheckEnabled && '0' === messageData[dimension]) {\n hiddenCheckEnabled = true;\n log(iframeId,'Hidden iFrame detected, creating visibility listener');\n fixHiddenIFrames();\n }\n }\n\n function processDimension(dimension) {\n setDimension(dimension);\n chkZero(dimension);\n }\n\n var iframeId = messageData.iframe.id;\n\n if(settings[iframeId]) {\n if( settings[iframeId].sizeHeight) { processDimension('height'); }\n if( settings[iframeId].sizeWidth ) { processDimension('width'); }\n }\n }\n\n function syncResize(func,messageData,doNotSync) {\n /* istanbul ignore if */ //Not testable in PhantomJS\n if(doNotSync!==messageData.type && requestAnimationFrame) {\n log(messageData.id,'Requesting animation frame');\n requestAnimationFrame(func);\n } else {\n func();\n }\n }\n\n function trigger(calleeMsg, msg, iframe, id, noResponseWarning) {\n function postMessageToIFrame() {\n var target = settings[id] && settings[id].targetOrigin;\n log(id,'[' + calleeMsg + '] Sending msg to iframe['+id+'] ('+msg+') targetOrigin: '+target);\n iframe.contentWindow.postMessage( msgId + msg, target );\n }\n\n function iFrameNotFound() {\n warn(id,'[' + calleeMsg + '] IFrame('+id+') not found');\n }\n\n function chkAndSend() {\n if(iframe && 'contentWindow' in iframe && (null !== iframe.contentWindow)) { //Null test for PhantomJS\n postMessageToIFrame();\n } else {\n iFrameNotFound();\n }\n }\n\n function warnOnNoResponse() {\n function warning() {\n if (settings[id] && !settings[id].loaded && !errorShown) {\n errorShown = true;\n 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 ingored if everything is working, or you can set the warningTimeout option to a higher value or zero to suppress this warning.');\n }\n }\n\n if (!!noResponseWarning && settings[id] && !!settings[id].warningTimeout) {\n settings[id].msgTimeout = setTimeout(warning, settings[id].warningTimeout);\n }\n }\n\n var errorShown = false;\n\n id = id || iframe.id;\n\n if(settings[id]) {\n chkAndSend();\n warnOnNoResponse();\n }\n\n }\n\n function createOutgoingMsg(iframeId) {\n return iframeId +\n ':' + settings[iframeId].bodyMarginV1 +\n ':' + settings[iframeId].sizeWidth +\n ':' + settings[iframeId].log +\n ':' + settings[iframeId].interval +\n ':' + settings[iframeId].enablePublicMethods +\n ':' + settings[iframeId].autoResize +\n ':' + settings[iframeId].bodyMargin +\n ':' + settings[iframeId].heightCalculationMethod +\n ':' + settings[iframeId].bodyBackground +\n ':' + settings[iframeId].bodyPadding +\n ':' + settings[iframeId].tolerance +\n ':' + settings[iframeId].inPageLinks +\n ':' + settings[iframeId].resizeFrom +\n ':' + settings[iframeId].widthCalculationMethod;\n }\n\n function setupIFrame(iframe,options) {\n function setLimits() {\n function addStyle(style) {\n if ((Infinity !== settings[iframeId][style]) && (0 !== settings[iframeId][style])) {\n iframe.style[style] = settings[iframeId][style] + 'px';\n log(iframeId,'Set '+style+' = '+settings[iframeId][style]+'px');\n }\n }\n\n function chkMinMax(dimension) {\n if (settings[iframeId]['min'+dimension]>settings[iframeId]['max'+dimension]) {\n throw new Error('Value for min'+dimension+' can not be greater than max'+dimension);\n }\n }\n\n chkMinMax('Height');\n chkMinMax('Width');\n\n addStyle('maxHeight');\n addStyle('minHeight');\n addStyle('maxWidth');\n addStyle('minWidth');\n }\n\n function newId() {\n var id = ((options && options.id) || defaults.id + count++);\n if (null !== document.getElementById(id)) {\n id = id + count++;\n }\n return id;\n }\n\n function ensureHasId(iframeId) {\n logId=iframeId;\n if (''===iframeId) {\n iframe.id = iframeId = newId();\n logEnabled = (options || {}).log;\n logId=iframeId;\n log(iframeId,'Added missing iframe ID: '+ iframeId +' (' + iframe.src + ')');\n }\n\n\n return iframeId;\n }\n\n function setScrolling() {\n log(iframeId,'IFrame scrolling ' + (settings[iframeId] && settings[iframeId].scrolling ? 'enabled' : 'disabled') + ' for ' + iframeId);\n iframe.style.overflow = false === (settings[iframeId] && settings[iframeId].scrolling) ? 'hidden' : 'auto';\n switch(settings[iframeId] && settings[iframeId].scrolling) {\n case true:\n iframe.scrolling = 'yes';\n break;\n case false:\n iframe.scrolling = 'no';\n break;\n default:\n iframe.scrolling = settings[iframeId] ? settings[iframeId].scrolling : 'no';\n }\n }\n\n //The V1 iFrame script expects an int, where as in V2 expects a CSS\n //string value such as '1px 3em', so if we have an int for V2, set V1=V2\n //and then convert V2 to a string PX value.\n function setupBodyMarginValues() {\n if (('number'===typeof(settings[iframeId] && settings[iframeId].bodyMargin)) || ('0'===(settings[iframeId] && settings[iframeId].bodyMargin))) {\n settings[iframeId].bodyMarginV1 = settings[iframeId].bodyMargin;\n settings[iframeId].bodyMargin = '' + settings[iframeId].bodyMargin + 'px';\n }\n }\n\n function checkReset() {\n // Reduce scope of firstRun to function, because IE8's JS execution\n // context stack is borked and this value gets externally\n // changed midway through running this function!!!\n var\n firstRun = settings[iframeId] && settings[iframeId].firstRun,\n resetRequertMethod = settings[iframeId] && settings[iframeId].heightCalculationMethod in resetRequiredMethods;\n\n if (!firstRun && resetRequertMethod) {\n resetIFrame({iframe:iframe, height:0, width:0, type:'init'});\n }\n }\n\n function setupIFrameObject() {\n if(Function.prototype.bind && settings[iframeId]) { //Ignore unpolyfilled IE8.\n settings[iframeId].iframe.iFrameResizer = {\n\n close : closeIFrame.bind(null,settings[iframeId].iframe),\n\n resize : trigger.bind(null,'Window resize', 'resize', settings[iframeId].iframe),\n\n moveToAnchor : function(anchor) {\n trigger('Move to anchor','moveToAnchor:'+anchor, settings[iframeId].iframe,iframeId);\n },\n\n sendMessage : function(message) {\n message = JSON.stringify(message);\n trigger('Send Message','message:'+message, settings[iframeId].iframe, iframeId);\n }\n };\n }\n }\n\n //We have to call trigger twice, as we can not be sure if all\n //iframes have completed loading when this code runs. The\n //event listener also catches the page changing in the iFrame.\n function init(msg) {\n function iFrameLoaded() {\n trigger('iFrame.onload', msg, iframe, undefined , true);\n checkReset();\n }\n\n addEventListener(iframe,'load',iFrameLoaded);\n trigger('init', msg, iframe, undefined, true);\n }\n\n function checkOptions(options) {\n if ('object' !== typeof options) {\n throw new TypeError('Options is not an object');\n }\n }\n\n function copyOptions(options) {\n for (var option in defaults) {\n if (defaults.hasOwnProperty(option)) {\n settings[iframeId][option] = options.hasOwnProperty(option) ? options[option] : defaults[option];\n }\n }\n }\n\n function getTargetOrigin (remoteHost) {\n return ('' === remoteHost || 'file://' === remoteHost) ? '*' : remoteHost;\n }\n\n function processOptions(options) {\n options = options || {};\n settings[iframeId] = {\n firstRun\t: true,\n iframe\t\t: iframe,\n remoteHost\t: iframe.src.split('/').slice(0,3).join('/')\n };\n\n checkOptions(options);\n copyOptions(options);\n\n if (settings[iframeId]) {\n settings[iframeId].targetOrigin = true === settings[iframeId].checkOrigin ? getTargetOrigin(settings[iframeId].remoteHost) : '*';\n }\n }\n\n function beenHere() {\n return (iframeId in settings && 'iFrameResizer' in iframe);\n }\n\n var iframeId = ensureHasId(iframe.id);\n\n if (!beenHere()) {\n processOptions(options);\n setScrolling();\n setLimits();\n setupBodyMarginValues();\n init(createOutgoingMsg(iframeId));\n setupIFrameObject();\n } else {\n warn(iframeId,'Ignored iFrame, already setup.');\n }\n }\n\n function debouce(fn,time) {\n if (null === timer) {\n timer = setTimeout(function() {\n timer = null;\n fn();\n }, time);\n }\n }\n \n var frameTimer = {};\n function debounceFrameEvents(fn,time,frameId) {\n if (!frameTimer[frameId]) {\n frameTimer[frameId] = setTimeout(function() {\n frameTimer[frameId] = null;\n fn();\n }, time);\n }\n }\n\n /* istanbul ignore next */ //Not testable in PhantomJS\n function fixHiddenIFrames() {\n function checkIFrames() {\n function checkIFrame(settingId) {\n function chkDimension(dimension) {\n return '0px' === (settings[settingId] && settings[settingId].iframe.style[dimension]);\n }\n\n function isVisible(el) {\n return (null !== el.offsetParent);\n }\n\n if (settings[settingId] && isVisible(settings[settingId].iframe) && (chkDimension('height') || chkDimension('width'))) {\n trigger('Visibility change', 'resize', settings[settingId].iframe, settingId);\n }\n }\n\n for (var settingId in settings) {\n checkIFrame(settingId);\n }\n }\n\n function mutationObserved(mutations) {\n log('window','Mutation observed: ' + mutations[0].target + ' ' + mutations[0].type);\n debouce(checkIFrames,16);\n }\n\n function createMutationObserver() {\n var\n target = document.querySelector('body'),\n\n config = {\n attributes : true,\n attributeOldValue : false,\n characterData : true,\n characterDataOldValue : false,\n childList : true,\n subtree : true\n },\n\n observer = new MutationObserver(mutationObserved);\n\n observer.observe(target, config);\n }\n\n var MutationObserver = window.MutationObserver || window.WebKitMutationObserver;\n\n if (MutationObserver) createMutationObserver();\n }\n\n\n function resizeIFrames(event) {\n function resize() {\n sendTriggerMsg('Window '+event,'resize');\n }\n\n log('window','Trigger event: '+event);\n debouce(resize,16);\n }\n\n /* istanbul ignore next */ //Not testable in PhantomJS\n function tabVisible() {\n function resize() {\n sendTriggerMsg('Tab Visable','resize');\n }\n\n if('hidden' !== document.visibilityState) {\n log('document','Trigger event: Visiblity change');\n debouce(resize,16);\n }\n }\n\n function sendTriggerMsg(eventName,event) {\n function isIFrameResizeEnabled(iframeId) {\n return\tsettings[iframeId] &&\n 'parent' === settings[iframeId].resizeFrom &&\n settings[iframeId].autoResize &&\n !settings[iframeId].firstRun;\n }\n\n for (var iframeId in settings) {\n if(isIFrameResizeEnabled(iframeId)) {\n trigger(eventName, event, document.getElementById(iframeId), iframeId);\n }\n }\n }\n\n function setupEventListeners() {\n addEventListener(window,'message',iFrameListener);\n\n addEventListener(window,'resize', function() {resizeIFrames('resize');});\n\n addEventListener(document,'visibilitychange',tabVisible);\n addEventListener(document,'-webkit-visibilitychange',tabVisible); //Andriod 4.4\n addEventListener(window,'focusin',function() {resizeIFrames('focus');}); //IE8-9\n addEventListener(window,'focus',function() {resizeIFrames('focus');});\n }\n\n\n function factory() {\n function init(options,element) {\n function chkType() {\n if(!element.tagName) {\n throw new TypeError('Object is not a valid DOM element');\n } else if ('IFRAME' !== element.tagName.toUpperCase()) {\n throw new TypeError('Expected