From ecacc44b72694bbc24ff9a5a6218acda7f80367d Mon Sep 17 00:00:00 2001 From: Pradeep Date: Thu, 13 Jun 2019 19:58:45 +0530 Subject: [PATCH] chrome flickering and tab issue --- js/iframeResizer.contentWindow.js | 34 ++++++++++++--------------- js/iframeResizer.contentWindow.map | 2 +- js/iframeResizer.contentWindow.min.js | 6 ++--- js/iframeResizer.min.js | 4 ++-- src/iframeResizer.contentWindow.js | 26 +++++++++++++------- 5 files changed, 38 insertions(+), 34 deletions(-) diff --git a/js/iframeResizer.contentWindow.js b/js/iframeResizer.contentWindow.js index a71339d6a..7ab5a321a 100644 --- a/js/iframeResizer.contentWindow.js +++ b/js/iframeResizer.contentWindow.js @@ -313,9 +313,9 @@ manageTriggerEvent({method:method, eventType: 'Transition Start', eventNames: ['transitionstart','webkitTransitionStart','MSTransitionStart','oTransitionStart','otransitionstart'] }); manageTriggerEvent({method:method, eventType: 'Transition Iteration', eventNames: ['transitioniteration','webkitTransitionIteration','MSTransitionIteration','oTransitionIteration','otransitioniteration'] }); manageTriggerEvent({method:method, eventType: 'Transition End', eventNames: ['transitionend','webkitTransitionEnd','MSTransitionEnd','oTransitionEnd','otransitionend'] }); - if('child' === resizeFrom) { + //if('child' === resizeFrom) { // to fix on tab change before iframe loads. manageTriggerEvent({method:method, eventType: 'IFrame Resized', eventName: 'resize' }); - } + //} } function checkCalcMode(calcMode,calcModeDefault,modes,type) { @@ -721,7 +721,8 @@ } //Idea from https://github.com/guardian/iframe-messenger - function getMaxElement(side,elements) { + function getMaxElement(side,elements, useMargin) { + useMargin = (typeof useMargin === 'undefined' ? true : useMargin); var elementsLength = elements.length, elVal = 0, @@ -730,7 +731,8 @@ timer = getNow(); for (var i = 0; i < elementsLength; i++) { - elVal = elements[i].getBoundingClientRect()[side] + getComputedStyle('margin'+Side,elements[i]); + var marginHeight = getComputedStyle('margin' + Side, elements[i]); + elVal = elements[i].getBoundingClientRect()[side] + getComputedStyle('margin'+Side,elements[i]) + (useMargin ? marginHeight : 0); if (elVal > maxVal) { maxVal = elVal; } @@ -818,17 +820,9 @@ return getTaggedElements('bottom','data-iframe-height'); }, - maxAll: function getMaxAllHeight() { - var currentHeight = Math.max.apply(null, getAllMeasurements(getHeight)); - var leHeight = Math.max(getHeight.bodyOffset(), getMaxElement('bottom', getAllElements())); - if (currentHeight > leHeight) { - window.setTimeout(function () { - currentHeight = Math.max(getHeight.bodyOffset(), getHeight.bodyScroll(), getHeight.documentElementOffset(), getMaxElement('bottom', getAllElements())); - sendMsg(currentHeight, getWidth[widthCalcMode](), null); - }, 100); - } - return currentHeight; - } + lowestElementNoMargin: function getBestHeight() { + return Math.max(getHeight.bodyOffset(), getMaxElement('bottom', getAllElements(), false)); + }, }, getWidth = { @@ -879,8 +873,9 @@ function resizeIFrame() { height = currentHeight; width = currentWidth; - - sendMsg(height,width,triggerEvent); + if (height > 50) { //do not set height if its less then + sendMsg(height,width,triggerEvent); + } } function isSizeChangeDetected() { @@ -966,8 +961,9 @@ function triggerReset(triggerEvent) { height = getHeight[heightCalcMode](); width = getWidth[widthCalcMode](); - - sendMsg(height,width,triggerEvent); + if (height > 50) { + sendMsg(height,width,triggerEvent); + } } function resetIFrame(triggerEventDesc) { diff --git a/js/iframeResizer.contentWindow.map b/js/iframeResizer.contentWindow.map index f9c50b7df..47b5da4d4 100644 --- a/js/iframeResizer.contentWindow.map +++ b/js/iframeResizer.contentWindow.map @@ -1 +1 @@ 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* File: iframeResizer.contentWindow.js\n * Desc: Include this file in any page being loaded into an iframe\n * to force the iframe to resize to the content size.\n * Requires: iframeResizer.js on host page.\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: Ian Caunce - ian@hallnet.co.uk\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 autoResize = true,\n base = 10,\n bodyBackground = '',\n bodyMargin = 0,\n bodyMarginStr = '',\n bodyObserver = null,\n bodyPadding = '',\n calculateWidth = false,\n doubleEventList = {'resize':1,'click':1},\n eventCancelTimer = 128,\n firstRun = true,\n height = 1,\n heightCalcModeDefault = 'bodyOffset',\n heightCalcMode = heightCalcModeDefault,\n initLock = true,\n initMsg = '',\n inPageLinks = {},\n interval = 32,\n intervalTimer = null,\n logging = false,\n msgID = '[iFrameSizer]', //Must match host page msg ID\n msgIdLen = msgID.length,\n myID = '',\n observer = null,\n resetRequiredMethods = {max:1,min:1,bodyScroll:1,documentElementScroll:1},\n resizeFrom = 'child',\n sendPermit = true,\n target = window.parent,\n targetOriginDefault = '*',\n tolerance = 0,\n triggerLocked = false,\n triggerLockedTimer = null,\n throttledTimer = 16,\n width = 1,\n widthCalcModeDefault = 'scroll',\n widthCalcMode = widthCalcModeDefault,\n win = window,\n messageCallback = function() { warn('MessageCallback function not defined'); },\n readyCallback = function() {},\n pageInfoCallback = function() {},\n customCalcMethods = {\n height: function() {\n warn('Custom height calculation function not defined');\n return document.documentElement.offsetHeight;\n },\n width: function() {\n warn('Custom width calculation function not defined');\n return document.body.scrollWidth;\n }\n },\n eventHandlersByName = {};\n\n\n function addEventListener(el,evt,func) {\n /* istanbul ignore else */ // Not testable in phantonJS\n if ('addEventListener' in window) {\n el.addEventListener(evt,func, false);\n } else if ('attachEvent' in window) { //IE\n el.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 capitalizeFirstLetter(string) {\n return string.charAt(0).toUpperCase() + string.slice(1);\n }\n\n //Based on underscore.js\n function throttle(func) {\n var\n context, args, result,\n timeout = null,\n previous = 0,\n later = function() {\n previous = getNow();\n timeout = null;\n result = func.apply(context, args);\n if (!timeout) {\n context = args = null;\n }\n };\n\n return function() {\n var now = getNow();\n\n if (!previous) {\n previous = now;\n }\n\n var remaining = throttledTimer - (now - previous);\n\n context = this;\n args = arguments;\n\n if (remaining <= 0 || remaining > throttledTimer) {\n if (timeout) {\n clearTimeout(timeout);\n timeout = null;\n }\n\n previous = now;\n result = func.apply(context, args);\n\n if (!timeout) {\n context = args = null;\n }\n\n } else if (!timeout) {\n timeout = setTimeout(later, remaining);\n }\n\n return result;\n };\n }\n\n var getNow = Date.now || function() {\n /* istanbul ignore next */ // Not testable in PhantonJS\n return new Date().getTime();\n };\n\n function formatLogMsg(msg) {\n return msgID + '[' + myID + ']' + ' ' + msg;\n }\n\n function log(msg) {\n if (logging && ('object' === typeof window.console)) {\n console.log(formatLogMsg(msg));\n }\n }\n\n function warn(msg) {\n if ('object' === typeof window.console) {\n console.warn(formatLogMsg(msg));\n }\n }\n\n\n function init() {\n readDataFromParent();\n log('Initialising iFrame ('+location.href+')');\n readDataFromPage();\n setMargin();\n setBodyStyle('background',bodyBackground);\n setBodyStyle('padding',bodyPadding);\n injectClearFixIntoBodyElement();\n checkHeightMode();\n checkWidthMode();\n stopInfiniteResizingOfIFrame();\n setupPublicMethods();\n startEventListeners();\n inPageLinks = setupInPageLinks();\n sendSize('init','Init message from host page');\n readyCallback();\n }\n\n function readDataFromParent() {\n\n function strBool(str) {\n return 'true' === str ? true : false;\n }\n\n var data = initMsg.substr(msgIdLen).split(':');\n\n myID = data[0];\n bodyMargin = (undefined !== data[1]) ? Number(data[1]) : bodyMargin; //For V1 compatibility\n calculateWidth = (undefined !== data[2]) ? strBool(data[2]) : calculateWidth;\n logging = (undefined !== data[3]) ? strBool(data[3]) : logging;\n interval = (undefined !== data[4]) ? Number(data[4]) : interval;\n autoResize = (undefined !== data[6]) ? strBool(data[6]) : autoResize;\n bodyMarginStr = data[7];\n heightCalcMode = (undefined !== data[8]) ? data[8] : heightCalcMode;\n bodyBackground = data[9];\n bodyPadding = data[10];\n tolerance = (undefined !== data[11]) ? Number(data[11]) : tolerance;\n inPageLinks.enable = (undefined !== data[12]) ? strBool(data[12]): false;\n resizeFrom = (undefined !== data[13]) ? data[13] : resizeFrom;\n widthCalcMode = (undefined !== data[14]) ? data[14] : widthCalcMode;\n }\n\n function readDataFromPage() {\n function readData() {\n var data = window.iFrameResizer;\n\n log('Reading data from page: ' + JSON.stringify(data));\n\n messageCallback = ('messageCallback' in data) ? data.messageCallback : messageCallback;\n readyCallback = ('readyCallback' in data) ? data.readyCallback : readyCallback;\n targetOriginDefault = ('targetOrigin' in data) ? data.targetOrigin : targetOriginDefault;\n heightCalcMode = ('heightCalculationMethod' in data) ? data.heightCalculationMethod : heightCalcMode;\n widthCalcMode = ('widthCalculationMethod' in data) ? data.widthCalculationMethod : widthCalcMode;\n }\n\n function setupCustomCalcMethods(calcMode, calcFunc) {\n if ('function' === typeof calcMode) {\n log('Setup custom ' + calcFunc + 'CalcMethod');\n customCalcMethods[calcFunc] = calcMode;\n calcMode = 'custom';\n }\n\n return calcMode;\n }\n\n if(('iFrameResizer' in window) && (Object === window.iFrameResizer.constructor)) {\n readData();\n heightCalcMode = setupCustomCalcMethods(heightCalcMode, 'height');\n widthCalcMode = setupCustomCalcMethods(widthCalcMode, 'width');\n }\n\n log('TargetOrigin for parent set to: ' + targetOriginDefault);\n }\n\n\n function chkCSS(attr,value) {\n if (-1 !== value.indexOf('-')) {\n warn('Negative CSS value ignored for '+attr);\n value='';\n }\n return value;\n }\n\n function setBodyStyle(attr,value) {\n if ((undefined !== value) && ('' !== value) && ('null' !== value)) {\n document.body.style[attr] = value;\n log('Body '+attr+' set to \"'+value+'\"');\n }\n }\n\n function setMargin() {\n //If called via V1 script, convert bodyMargin from int to str\n if (undefined === bodyMarginStr) {\n bodyMarginStr = bodyMargin+'px';\n }\n\n setBodyStyle('margin',chkCSS('margin',bodyMarginStr));\n }\n\n function stopInfiniteResizingOfIFrame() {\n document.documentElement.style.height = '';\n document.body.style.height = '';\n log('HTML & body height set to \"auto\"');\n }\n\n\n function manageTriggerEvent(options) {\n\n var listener = {\n add: function(eventName) {\n function handleEvent() {\n sendSize(options.eventName,options.eventType);\n }\n\n eventHandlersByName[eventName] = handleEvent;\n\n addEventListener(window,eventName,handleEvent);\n },\n remove: function(eventName) {\n var handleEvent = eventHandlersByName[eventName];\n delete eventHandlersByName[eventName];\n\n removeEventListener(window,eventName,handleEvent);\n }\n };\n\n if(options.eventNames && Array.prototype.map) {\n options.eventName = options.eventNames[0];\n options.eventNames.map(listener[options.method]);\n } else {\n listener[options.method](options.eventName);\n }\n\n log(capitalizeFirstLetter(options.method) + ' event listener: ' + options.eventType);\n }\n\n function manageEventListeners(method) {\n manageTriggerEvent({method:method, eventType: 'Animation Start', eventNames: ['animationstart','webkitAnimationStart'] });\n manageTriggerEvent({method:method, eventType: 'Animation Iteration', eventNames: ['animationiteration','webkitAnimationIteration'] });\n manageTriggerEvent({method:method, eventType: 'Animation End', eventNames: ['animationend','webkitAnimationEnd'] });\n manageTriggerEvent({method:method, eventType: 'Input', eventName: 'input' });\n manageTriggerEvent({method:method, eventType: 'Mouse Up', eventName: 'mouseup' });\n manageTriggerEvent({method:method, eventType: 'Mouse Down', eventName: 'mousedown' });\n manageTriggerEvent({method:method, eventType: 'Orientation Change', eventName: 'orientationchange' });\n manageTriggerEvent({method:method, eventType: 'Print', eventName: ['afterprint', 'beforeprint'] });\n manageTriggerEvent({method:method, eventType: 'Ready State Change', eventName: 'readystatechange' });\n manageTriggerEvent({method:method, eventType: 'Touch Start', eventName: 'touchstart' });\n manageTriggerEvent({method:method, eventType: 'Touch End', eventName: 'touchend' });\n manageTriggerEvent({method:method, eventType: 'Touch Cancel', eventName: 'touchcancel' });\n manageTriggerEvent({method:method, eventType: 'Transition Start', eventNames: ['transitionstart','webkitTransitionStart','MSTransitionStart','oTransitionStart','otransitionstart'] });\n manageTriggerEvent({method:method, eventType: 'Transition Iteration', eventNames: ['transitioniteration','webkitTransitionIteration','MSTransitionIteration','oTransitionIteration','otransitioniteration'] });\n manageTriggerEvent({method:method, eventType: 'Transition End', eventNames: ['transitionend','webkitTransitionEnd','MSTransitionEnd','oTransitionEnd','otransitionend'] });\n if('child' === resizeFrom) {\n manageTriggerEvent({method:method, eventType: 'IFrame Resized', eventName: 'resize' });\n }\n }\n\n function checkCalcMode(calcMode,calcModeDefault,modes,type) {\n if (calcModeDefault !== calcMode) {\n if (!(calcMode in modes)) {\n warn(calcMode + ' is not a valid option for '+type+'CalculationMethod.');\n calcMode=calcModeDefault;\n }\n log(type+' calculation method set to \"'+calcMode+'\"');\n }\n\n return calcMode;\n }\n\n function checkHeightMode() {\n heightCalcMode = checkCalcMode(heightCalcMode,heightCalcModeDefault,getHeight,'height');\n }\n\n function checkWidthMode() {\n widthCalcMode = checkCalcMode(widthCalcMode,widthCalcModeDefault,getWidth,'width');\n }\n\n function startEventListeners() {\n if ( true === autoResize ) {\n manageEventListeners('add');\n setupMutationObserver();\n }\n else {\n log('Auto Resize disabled');\n }\n }\n\n function stopMsgsToParent() {\n log('Disable outgoing messages');\n sendPermit = false;\n }\n\n function removeMsgListener() {\n log('Remove event listener: Message');\n removeEventListener(window, 'message', receiver);\n }\n\n function disconnectMutationObserver() {\n if (null !== bodyObserver) {\n /* istanbul ignore next */ // Not testable in PhantonJS\n bodyObserver.disconnect();\n }\n }\n\n function stopEventListeners() {\n manageEventListeners('remove');\n disconnectMutationObserver();\n clearInterval(intervalTimer);\n }\n\n function teardown() {\n stopMsgsToParent();\n removeMsgListener();\n if (true === autoResize) stopEventListeners();\n }\n\n function injectClearFixIntoBodyElement() {\n var clearFix = document.createElement('div');\n clearFix.style.clear = 'both';\n clearFix.style.display = 'block'; //Guard against this having been globally redefined in CSS.\n document.body.appendChild(clearFix);\n }\n\n function setupInPageLinks() {\n\n function getPagePosition () {\n return {\n x: (window.pageXOffset !== undefined) ? window.pageXOffset : document.documentElement.scrollLeft,\n y: (window.pageYOffset !== undefined) ? window.pageYOffset : document.documentElement.scrollTop\n };\n }\n\n function getElementPosition(el) {\n var\n elPosition = el.getBoundingClientRect(),\n pagePosition = getPagePosition();\n\n return {\n x: parseInt(elPosition.left,10) + parseInt(pagePosition.x,10),\n y: parseInt(elPosition.top,10) + parseInt(pagePosition.y,10)\n };\n }\n\n function findTarget(location) {\n function jumpToTarget(target) {\n var jumpPosition = getElementPosition(target);\n\n log('Moving to in page link (#'+hash+') at x: '+jumpPosition.x+' y: '+jumpPosition.y);\n sendMsg(jumpPosition.y, jumpPosition.x, 'scrollToOffset'); // X&Y reversed at sendMsg uses height/width\n }\n\n var\n hash = location.split('#')[1] || location, //Remove # if present\n hashData = decodeURIComponent(hash),\n target = document.getElementById(hashData) || document.getElementsByName(hashData)[0];\n\n if (undefined !== target) {\n jumpToTarget(target);\n } else {\n log('In page link (#' + hash + ') not found in iFrame, so sending to parent');\n sendMsg(0,0,'inPageLink','#'+hash);\n }\n }\n\n function checkLocationHash() {\n if ('' !== location.hash && '#' !== location.hash) {\n findTarget(location.href);\n }\n }\n\n function bindAnchors() {\n function setupLink(el) {\n function linkClicked(e) {\n e.preventDefault();\n\n /*jshint validthis:true */\n findTarget(this.getAttribute('href'));\n }\n\n if ('#' !== el.getAttribute('href')) {\n addEventListener(el,'click',linkClicked);\n }\n }\n\n Array.prototype.forEach.call( document.querySelectorAll( 'a[href^=\"#\"]' ), setupLink );\n }\n\n function bindLocationHash() {\n addEventListener(window,'hashchange',checkLocationHash);\n }\n\n function initCheck() { //check if page loaded with location hash after init resize\n setTimeout(checkLocationHash,eventCancelTimer);\n }\n\n function enableInPageLinks() {\n /* istanbul ignore else */ // Not testable in phantonJS\n if(Array.prototype.forEach && document.querySelectorAll) {\n log('Setting up location.hash handlers');\n bindAnchors();\n bindLocationHash();\n initCheck();\n } else {\n warn('In page linking not fully supported in this browser! (See README.md for IE8 workaround)');\n }\n }\n\n if(inPageLinks.enable) {\n enableInPageLinks();\n } else {\n log('In page linking not enabled');\n }\n\n return {\n findTarget:findTarget\n };\n }\n\n function setupPublicMethods() {\n log('Enable public methods');\n\n win.parentIFrame = {\n\n autoResize: function autoResizeF(resize) {\n if (true === resize && false === autoResize) {\n autoResize=true;\n startEventListeners();\n //sendSize('autoResize','Auto Resize enabled');\n } else if (false === resize && true === autoResize) {\n autoResize=false;\n stopEventListeners();\n }\n\n return autoResize;\n },\n\n close: function closeF() {\n sendMsg(0,0,'close');\n teardown();\n },\n\n getId: function getIdF() {\n return myID;\n },\n\n getPageInfo: function getPageInfoF(callback) {\n if ('function' === typeof callback) {\n pageInfoCallback = callback;\n sendMsg(0,0,'pageInfo');\n } else {\n pageInfoCallback = function() {};\n sendMsg(0,0,'pageInfoStop');\n }\n },\n\n moveToAnchor: function moveToAnchorF(hash) {\n inPageLinks.findTarget(hash);\n },\n\n reset: function resetF() {\n resetIFrame('parentIFrame.reset');\n },\n\n scrollTo: function scrollToF(x,y) {\n sendMsg(y,x,'scrollTo'); // X&Y reversed at sendMsg uses height/width\n },\n\n scrollToOffset: function scrollToF(x,y) {\n sendMsg(y,x,'scrollToOffset'); // X&Y reversed at sendMsg uses height/width\n },\n\n sendMessage: function sendMessageF(msg,targetOrigin) {\n sendMsg(0,0,'message',JSON.stringify(msg),targetOrigin);\n },\n\n setHeightCalculationMethod: function setHeightCalculationMethodF(heightCalculationMethod) {\n heightCalcMode = heightCalculationMethod;\n checkHeightMode();\n },\n\n setWidthCalculationMethod: function setWidthCalculationMethodF(widthCalculationMethod) {\n widthCalcMode = widthCalculationMethod;\n checkWidthMode();\n },\n\n setTargetOrigin: function setTargetOriginF(targetOrigin) {\n log('Set targetOrigin: '+targetOrigin);\n targetOriginDefault = targetOrigin;\n },\n\n size: function sizeF(customHeight, customWidth) {\n var valString = ''+(customHeight?customHeight:'')+(customWidth?','+customWidth:'');\n //lockTrigger();\n sendSize('size','parentIFrame.size('+valString+')', customHeight, customWidth);\n }\n };\n }\n\n function initInterval() {\n if ( 0 !== interval ) {\n log('setInterval: '+interval+'ms');\n intervalTimer = setInterval(function() {\n sendSize('interval','setInterval: '+interval);\n },Math.abs(interval));\n }\n }\n\n /* istanbul ignore next */ //Not testable in PhantomJS\n function setupBodyMutationObserver() {\n function addImageLoadListners(mutation) {\n function addImageLoadListener(element) {\n if (false === element.complete) {\n log('Attach listeners to ' + element.src);\n element.addEventListener('load', imageLoaded, false);\n element.addEventListener('error', imageError, false);\n elements.push(element);\n }\n }\n\n if (mutation.type === 'attributes' && mutation.attributeName === 'src') {\n addImageLoadListener(mutation.target);\n } else if (mutation.type === 'childList') {\n Array.prototype.forEach.call(\n mutation.target.querySelectorAll('img'),\n addImageLoadListener\n );\n }\n }\n\n function removeFromArray(element) {\n elements.splice(elements.indexOf(element),1);\n }\n\n function removeImageLoadListener(element) {\n log('Remove listeners from ' + element.src);\n element.removeEventListener('load', imageLoaded, false);\n element.removeEventListener('error', imageError, false);\n removeFromArray(element);\n }\n\n function imageEventTriggered(event,type,typeDesc) {\n removeImageLoadListener(event.target);\n sendSize(type, typeDesc + ': ' + event.target.src, undefined, undefined);\n }\n\n function imageLoaded(event) {\n imageEventTriggered(event,'imageLoad','Image loaded');\n }\n\n function imageError(event) {\n imageEventTriggered(event,'imageLoadFailed','Image load failed');\n }\n\n function mutationObserved(mutations) {\n sendSize('mutationObserver','mutationObserver: ' + mutations[0].target + ' ' + mutations[0].type);\n\n //Deal with WebKit asyncing image loading when tags are injected into the page\n mutations.forEach(addImageLoadListners);\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 log('Create body MutationObserver');\n observer.observe(target, config);\n\n return observer;\n }\n\n var\n elements = [],\n MutationObserver = window.MutationObserver || window.WebKitMutationObserver,\n observer = createMutationObserver();\n\n return {\n disconnect: function () {\n if ('disconnect' in observer) {\n log('Disconnect body MutationObserver');\n observer.disconnect();\n elements.forEach(removeImageLoadListener);\n }\n }\n };\n }\n\n function setupMutationObserver() {\n var\tforceIntervalTimer = 0 > interval;\n\n /* istanbul ignore if */ // Not testable in PhantomJS\n if (window.MutationObserver || window.WebKitMutationObserver) {\n if (forceIntervalTimer) {\n initInterval();\n } else {\n bodyObserver = setupBodyMutationObserver();\n }\n } else {\n log('MutationObserver not supported in this browser!');\n initInterval();\n }\n }\n\n\n // document.documentElement.offsetHeight is not reliable, so\n // we have to jump through hoops to get a better value.\n function getComputedStyle(prop,el) {\n /* istanbul ignore next */ //Not testable in PhantomJS\n function convertUnitsToPxForIE8(value) {\n var PIXEL = /^\\d+(px)?$/i;\n\n if (PIXEL.test(value)) {\n return parseInt(value,base);\n }\n\n var\n style = el.style.left,\n runtimeStyle = el.runtimeStyle.left;\n\n el.runtimeStyle.left = el.currentStyle.left;\n el.style.left = value || 0;\n value = el.style.pixelLeft;\n el.style.left = style;\n el.runtimeStyle.left = runtimeStyle;\n\n return value;\n }\n\n var retVal = 0;\n el = el || document.body;\n\n /* istanbul ignore else */ // Not testable in phantonJS\n if (('defaultView' in document) && ('getComputedStyle' in document.defaultView)) {\n retVal = document.defaultView.getComputedStyle(el, null);\n retVal = (null !== retVal) ? retVal[prop] : 0;\n } else {//IE8\n retVal = convertUnitsToPxForIE8(el.currentStyle[prop]);\n }\n\n return parseInt(retVal,base);\n }\n\n function chkEventThottle(timer) {\n if(timer > throttledTimer/2) {\n throttledTimer = 2*timer;\n log('Event throttle increased to ' + throttledTimer + 'ms');\n }\n }\n\n //Idea from https://github.com/guardian/iframe-messenger\n function getMaxElement(side,elements) {\n var\n elementsLength = elements.length,\n elVal = 0,\n maxVal = 0,\n Side = capitalizeFirstLetter(side),\n timer = getNow();\n\n for (var i = 0; i < elementsLength; i++) {\n elVal = elements[i].getBoundingClientRect()[side] + getComputedStyle('margin'+Side,elements[i]);\n if (elVal > maxVal) {\n maxVal = elVal;\n }\n }\n\n timer = getNow() - timer;\n\n log('Parsed '+elementsLength+' HTML elements');\n log('Element position calculated in ' + timer + 'ms');\n\n chkEventThottle(timer);\n\n return maxVal;\n }\n\n function getAllMeasurements(dimention) {\n return [\n dimention.bodyOffset(),\n dimention.bodyScroll(),\n dimention.documentElementOffset(),\n dimention.documentElementScroll()\n ];\n }\n\n function getTaggedElements(side,tag) {\n function noTaggedElementsFound() {\n warn('No tagged elements ('+tag+') found on page');\n return document.querySelectorAll('body *');\n }\n\n var elements = document.querySelectorAll('['+tag+']');\n\n if (0 === elements.length) noTaggedElementsFound();\n\n return getMaxElement(side,elements);\n }\n\n function getAllElements() {\n return document.querySelectorAll('body *');\n }\n\n var\n getHeight = {\n bodyOffset: function getBodyOffsetHeight() {\n return document.body.offsetHeight + getComputedStyle('marginTop') + getComputedStyle('marginBottom');\n },\n\n offset: function() {\n return getHeight.bodyOffset(); //Backwards compatability\n },\n\n bodyScroll: function getBodyScrollHeight() {\n return document.body.scrollHeight;\n },\n\n custom: function getCustomWidth() {\n return customCalcMethods.height();\n },\n\n documentElementOffset: function getDEOffsetHeight() {\n return document.documentElement.offsetHeight;\n },\n\n documentElementScroll: function getDEScrollHeight() {\n return document.documentElement.scrollHeight;\n },\n\n max: function getMaxHeight() {\n return Math.max.apply(null,getAllMeasurements(getHeight));\n },\n\n min: function getMinHeight() {\n return Math.min.apply(null,getAllMeasurements(getHeight));\n },\n\n grow: function growHeight() {\n return getHeight.max(); //Run max without the forced downsizing\n },\n\n lowestElement: function getBestHeight() {\n return Math.max(getHeight.bodyOffset() || getHeight.documentElementOffset(), getMaxElement('bottom',getAllElements()));\n },\n\n taggedElement: function getTaggedElementsHeight() {\n return getTaggedElements('bottom','data-iframe-height');\n }\n },\n\n getWidth = {\n bodyScroll: function getBodyScrollWidth() {\n return document.body.scrollWidth;\n },\n\n bodyOffset: function getBodyOffsetWidth() {\n return document.body.offsetWidth;\n },\n\n custom: function getCustomWidth() {\n return customCalcMethods.width();\n },\n\n documentElementScroll: function getDEScrollWidth() {\n return document.documentElement.scrollWidth;\n },\n\n documentElementOffset: function getDEOffsetWidth() {\n return document.documentElement.offsetWidth;\n },\n\n scroll: function getMaxWidth() {\n return Math.max(getWidth.bodyScroll(), getWidth.documentElementScroll());\n },\n\n max: function getMaxWidth() {\n return Math.max.apply(null,getAllMeasurements(getWidth));\n },\n\n min: function getMinWidth() {\n return Math.min.apply(null,getAllMeasurements(getWidth));\n },\n\n rightMostElement: function rightMostElement() {\n return getMaxElement('right', getAllElements());\n },\n\n taggedElement: function getTaggedElementsWidth() {\n return getTaggedElements('right', 'data-iframe-width');\n }\n };\n\n\n function sizeIFrame(triggerEvent, triggerEventDesc, customHeight, customWidth) {\n\n function resizeIFrame() {\n height = currentHeight;\n width = currentWidth;\n\n sendMsg(height,width,triggerEvent);\n }\n\n function isSizeChangeDetected() {\n function checkTolarance(a,b) {\n var retVal = Math.abs(a-b) <= tolerance;\n return !retVal;\n }\n\n currentHeight = (undefined !== customHeight) ? customHeight : getHeight[heightCalcMode]();\n currentWidth = (undefined !== customWidth ) ? customWidth : getWidth[widthCalcMode]();\n\n return\tcheckTolarance(height,currentHeight) || (calculateWidth && checkTolarance(width,currentWidth));\n }\n\n function isForceResizableEvent() {\n return !(triggerEvent in {'init':1,'interval':1,'size':1});\n }\n\n function isForceResizableCalcMode() {\n return (heightCalcMode in resetRequiredMethods) || (calculateWidth && widthCalcMode in resetRequiredMethods);\n }\n\n function logIgnored() {\n log('No change in size detected');\n }\n\n function checkDownSizing() {\n if (isForceResizableEvent() && isForceResizableCalcMode()) {\n resetIFrame(triggerEventDesc);\n } else if (!(triggerEvent in {'interval':1})) {\n logIgnored();\n }\n }\n\n var\tcurrentHeight,currentWidth;\n\n if (isSizeChangeDetected() || 'init' === triggerEvent) {\n lockTrigger();\n resizeIFrame();\n } else {\n checkDownSizing();\n }\n }\n\n var sizeIFrameThrottled = throttle(sizeIFrame);\n\n function sendSize(triggerEvent, triggerEventDesc, customHeight, customWidth) {\n function recordTrigger() {\n if (!(triggerEvent in {'reset':1,'resetPage':1,'init':1})) {\n log( 'Trigger event: ' + triggerEventDesc );\n }\n }\n\n function isDoubleFiredEvent() {\n return triggerLocked && (triggerEvent in doubleEventList);\n }\n\n if (!isDoubleFiredEvent()) {\n recordTrigger();\n if (triggerEvent === 'init') {\n sizeIFrame(triggerEvent, triggerEventDesc, customHeight, customWidth);\n } else {\n sizeIFrameThrottled(triggerEvent, triggerEventDesc, customHeight, customWidth);\n }\n } else {\n log('Trigger event cancelled: '+triggerEvent);\n }\n }\n\n function lockTrigger() {\n if (!triggerLocked) {\n triggerLocked = true;\n log('Trigger event lock on');\n }\n clearTimeout(triggerLockedTimer);\n triggerLockedTimer = setTimeout(function() {\n triggerLocked = false;\n log('Trigger event lock off');\n log('--');\n },eventCancelTimer);\n }\n\n function triggerReset(triggerEvent) {\n height = getHeight[heightCalcMode]();\n width = getWidth[widthCalcMode]();\n\n sendMsg(height,width,triggerEvent);\n }\n\n function resetIFrame(triggerEventDesc) {\n var hcm = heightCalcMode;\n heightCalcMode = heightCalcModeDefault;\n\n log('Reset trigger event: ' + triggerEventDesc);\n lockTrigger();\n triggerReset('reset');\n\n heightCalcMode = hcm;\n }\n\n function sendMsg(height,width,triggerEvent,msg,targetOrigin) {\n function setTargetOrigin() {\n if (undefined === targetOrigin) {\n targetOrigin = targetOriginDefault;\n } else {\n log('Message targetOrigin: '+targetOrigin);\n }\n }\n\n function sendToParent() {\n var\n size = height + ':' + width,\n message = myID + ':' + size + ':' + triggerEvent + (undefined !== msg ? 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* File: iframeResizer.contentWindow.js\n * Desc: Include this file in any page being loaded into an iframe\n * to force the iframe to resize to the content size.\n * Requires: iframeResizer.js on host page.\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: Ian Caunce - ian@hallnet.co.uk\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 autoResize = true,\n base = 10,\n bodyBackground = '',\n bodyMargin = 0,\n bodyMarginStr = '',\n bodyObserver = null,\n bodyPadding = '',\n calculateWidth = false,\n doubleEventList = {'resize':1,'click':1},\n eventCancelTimer = 128,\n firstRun = true,\n height = 1,\n heightCalcModeDefault = 'bodyOffset',\n heightCalcMode = heightCalcModeDefault,\n initLock = true,\n initMsg = '',\n inPageLinks = {},\n interval = 32,\n intervalTimer = null,\n logging = false,\n msgID = '[iFrameSizer]', //Must match host page msg ID\n msgIdLen = msgID.length,\n myID = '',\n observer = null,\n resetRequiredMethods = {max:1,min:1,bodyScroll:1,documentElementScroll:1},\n resizeFrom = 'child',\n sendPermit = true,\n target = window.parent,\n targetOriginDefault = '*',\n tolerance = 0,\n triggerLocked = false,\n triggerLockedTimer = null,\n throttledTimer = 16,\n width = 1,\n widthCalcModeDefault = 'scroll',\n widthCalcMode = widthCalcModeDefault,\n win = window,\n messageCallback = function() { warn('MessageCallback function not defined'); },\n readyCallback = function() {},\n pageInfoCallback = function() {},\n customCalcMethods = {\n height: function() {\n warn('Custom height calculation function not defined');\n return document.documentElement.offsetHeight;\n },\n width: function() {\n warn('Custom width calculation function not defined');\n return document.body.scrollWidth;\n }\n },\n eventHandlersByName = {};\n\n\n function addEventListener(el,evt,func) {\n /* istanbul ignore else */ // Not testable in phantonJS\n if ('addEventListener' in window) {\n el.addEventListener(evt,func, false);\n } else if ('attachEvent' in window) { //IE\n el.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 capitalizeFirstLetter(string) {\n return string.charAt(0).toUpperCase() + string.slice(1);\n }\n\n //Based on underscore.js\n function throttle(func) {\n var\n context, args, result,\n timeout = null,\n previous = 0,\n later = function() {\n previous = getNow();\n timeout = null;\n result = func.apply(context, args);\n if (!timeout) {\n context = args = null;\n }\n };\n\n return function() {\n var now = getNow();\n\n if (!previous) {\n previous = now;\n }\n\n var remaining = throttledTimer - (now - previous);\n\n context = this;\n args = arguments;\n\n if (remaining <= 0 || remaining > throttledTimer) {\n if (timeout) {\n clearTimeout(timeout);\n timeout = null;\n }\n\n previous = now;\n result = func.apply(context, args);\n\n if (!timeout) {\n context = args = null;\n }\n\n } else if (!timeout) {\n timeout = setTimeout(later, remaining);\n }\n\n return result;\n };\n }\n\n var getNow = Date.now || function() {\n /* istanbul ignore next */ // Not testable in PhantonJS\n return new Date().getTime();\n };\n\n function formatLogMsg(msg) {\n return msgID + '[' + myID + ']' + ' ' + msg;\n }\n\n function log(msg) {\n if (logging && ('object' === typeof window.console)) {\n console.log(formatLogMsg(msg));\n }\n }\n\n function warn(msg) {\n if ('object' === typeof window.console) {\n console.warn(formatLogMsg(msg));\n }\n }\n\n\n function init() {\n readDataFromParent();\n log('Initialising iFrame ('+location.href+')');\n readDataFromPage();\n setMargin();\n setBodyStyle('background',bodyBackground);\n setBodyStyle('padding',bodyPadding);\n injectClearFixIntoBodyElement();\n checkHeightMode();\n checkWidthMode();\n stopInfiniteResizingOfIFrame();\n setupPublicMethods();\n startEventListeners();\n inPageLinks = setupInPageLinks();\n sendSize('init','Init message from host page');\n readyCallback();\n }\n\n function readDataFromParent() {\n\n function strBool(str) {\n return 'true' === str ? true : false;\n }\n\n var data = initMsg.substr(msgIdLen).split(':');\n\n myID = data[0];\n bodyMargin = (undefined !== data[1]) ? Number(data[1]) : bodyMargin; //For V1 compatibility\n calculateWidth = (undefined !== data[2]) ? strBool(data[2]) : calculateWidth;\n logging = (undefined !== data[3]) ? strBool(data[3]) : logging;\n interval = (undefined !== data[4]) ? Number(data[4]) : interval;\n autoResize = (undefined !== data[6]) ? strBool(data[6]) : autoResize;\n bodyMarginStr = data[7];\n heightCalcMode = (undefined !== data[8]) ? data[8] : heightCalcMode;\n bodyBackground = data[9];\n bodyPadding = data[10];\n tolerance = (undefined !== data[11]) ? Number(data[11]) : tolerance;\n inPageLinks.enable = (undefined !== data[12]) ? strBool(data[12]): false;\n resizeFrom = (undefined !== data[13]) ? data[13] : resizeFrom;\n widthCalcMode = (undefined !== data[14]) ? data[14] : widthCalcMode;\n }\n\n function readDataFromPage() {\n function readData() {\n var data = window.iFrameResizer;\n\n log('Reading data from page: ' + JSON.stringify(data));\n\n messageCallback = ('messageCallback' in data) ? data.messageCallback : messageCallback;\n readyCallback = ('readyCallback' in data) ? data.readyCallback : readyCallback;\n targetOriginDefault = ('targetOrigin' in data) ? data.targetOrigin : targetOriginDefault;\n heightCalcMode = ('heightCalculationMethod' in data) ? data.heightCalculationMethod : heightCalcMode;\n widthCalcMode = ('widthCalculationMethod' in data) ? data.widthCalculationMethod : widthCalcMode;\n }\n\n function setupCustomCalcMethods(calcMode, calcFunc) {\n if ('function' === typeof calcMode) {\n log('Setup custom ' + calcFunc + 'CalcMethod');\n customCalcMethods[calcFunc] = calcMode;\n calcMode = 'custom';\n }\n\n return calcMode;\n }\n\n if(('iFrameResizer' in window) && (Object === window.iFrameResizer.constructor)) {\n readData();\n heightCalcMode = setupCustomCalcMethods(heightCalcMode, 'height');\n widthCalcMode = setupCustomCalcMethods(widthCalcMode, 'width');\n }\n\n log('TargetOrigin for parent set to: ' + targetOriginDefault);\n }\n\n\n function chkCSS(attr,value) {\n if (-1 !== value.indexOf('-')) {\n warn('Negative CSS value ignored for '+attr);\n value='';\n }\n return value;\n }\n\n function setBodyStyle(attr,value) {\n if ((undefined !== value) && ('' !== value) && ('null' !== value)) {\n document.body.style[attr] = value;\n log('Body '+attr+' set to \"'+value+'\"');\n }\n }\n\n function setMargin() {\n //If called via V1 script, convert bodyMargin from int to str\n if (undefined === bodyMarginStr) {\n bodyMarginStr = bodyMargin+'px';\n }\n\n setBodyStyle('margin',chkCSS('margin',bodyMarginStr));\n }\n\n function stopInfiniteResizingOfIFrame() {\n document.documentElement.style.height = '';\n document.body.style.height = '';\n log('HTML & body height set to \"auto\"');\n }\n\n\n function manageTriggerEvent(options) {\n\n var listener = {\n add: function(eventName) {\n function handleEvent() {\n sendSize(options.eventName,options.eventType);\n }\n\n eventHandlersByName[eventName] = handleEvent;\n\n addEventListener(window,eventName,handleEvent);\n },\n remove: function(eventName) {\n var handleEvent = eventHandlersByName[eventName];\n delete eventHandlersByName[eventName];\n\n removeEventListener(window,eventName,handleEvent);\n }\n };\n\n if(options.eventNames && Array.prototype.map) {\n options.eventName = options.eventNames[0];\n options.eventNames.map(listener[options.method]);\n } else {\n listener[options.method](options.eventName);\n }\n\n log(capitalizeFirstLetter(options.method) + ' event listener: ' + options.eventType);\n }\n\n function manageEventListeners(method) {\n manageTriggerEvent({method:method, eventType: 'Animation Start', eventNames: ['animationstart','webkitAnimationStart'] });\n manageTriggerEvent({method:method, eventType: 'Animation Iteration', eventNames: ['animationiteration','webkitAnimationIteration'] });\n manageTriggerEvent({method:method, eventType: 'Animation End', eventNames: ['animationend','webkitAnimationEnd'] });\n manageTriggerEvent({method:method, eventType: 'Input', eventName: 'input' });\n manageTriggerEvent({method:method, eventType: 'Mouse Up', eventName: 'mouseup' });\n manageTriggerEvent({method:method, eventType: 'Mouse Down', eventName: 'mousedown' });\n manageTriggerEvent({method:method, eventType: 'Orientation Change', eventName: 'orientationchange' });\n manageTriggerEvent({method:method, eventType: 'Print', eventName: ['afterprint', 'beforeprint'] });\n manageTriggerEvent({method:method, eventType: 'Ready State Change', eventName: 'readystatechange' });\n manageTriggerEvent({method:method, eventType: 'Touch Start', eventName: 'touchstart' });\n manageTriggerEvent({method:method, eventType: 'Touch End', eventName: 'touchend' });\n manageTriggerEvent({method:method, eventType: 'Touch Cancel', eventName: 'touchcancel' });\n manageTriggerEvent({method:method, eventType: 'Transition Start', eventNames: ['transitionstart','webkitTransitionStart','MSTransitionStart','oTransitionStart','otransitionstart'] });\n manageTriggerEvent({method:method, eventType: 'Transition Iteration', eventNames: ['transitioniteration','webkitTransitionIteration','MSTransitionIteration','oTransitionIteration','otransitioniteration'] });\n manageTriggerEvent({method:method, eventType: 'Transition End', eventNames: ['transitionend','webkitTransitionEnd','MSTransitionEnd','oTransitionEnd','otransitionend'] });\n //if('child' === resizeFrom) { // to fix on tab change before iframe loads.\n manageTriggerEvent({method:method, eventType: 'IFrame Resized', eventName: 'resize' });\n //}\n }\n\n function checkCalcMode(calcMode,calcModeDefault,modes,type) {\n if (calcModeDefault !== calcMode) {\n if (!(calcMode in modes)) {\n warn(calcMode + ' is not a valid option for '+type+'CalculationMethod.');\n calcMode=calcModeDefault;\n }\n log(type+' calculation method set to \"'+calcMode+'\"');\n }\n\n return calcMode;\n }\n\n function checkHeightMode() {\n heightCalcMode = checkCalcMode(heightCalcMode,heightCalcModeDefault,getHeight,'height');\n }\n\n function checkWidthMode() {\n widthCalcMode = checkCalcMode(widthCalcMode,widthCalcModeDefault,getWidth,'width');\n }\n\n function startEventListeners() {\n if ( true === autoResize ) {\n manageEventListeners('add');\n setupMutationObserver();\n }\n else {\n log('Auto Resize disabled');\n }\n }\n\n function stopMsgsToParent() {\n log('Disable outgoing messages');\n sendPermit = false;\n }\n\n function removeMsgListener() {\n log('Remove event listener: Message');\n removeEventListener(window, 'message', receiver);\n }\n\n function disconnectMutationObserver() {\n if (null !== bodyObserver) {\n /* istanbul ignore next */ // Not testable in PhantonJS\n bodyObserver.disconnect();\n }\n }\n\n function stopEventListeners() {\n manageEventListeners('remove');\n disconnectMutationObserver();\n clearInterval(intervalTimer);\n }\n\n function teardown() {\n stopMsgsToParent();\n removeMsgListener();\n if (true === autoResize) stopEventListeners();\n }\n\n function injectClearFixIntoBodyElement() {\n var clearFix = document.createElement('div');\n clearFix.style.clear = 'both';\n clearFix.style.display = 'block'; //Guard against this having been globally redefined in CSS.\n document.body.appendChild(clearFix);\n }\n\n function setupInPageLinks() {\n\n function getPagePosition () {\n return {\n x: (window.pageXOffset !== undefined) ? window.pageXOffset : document.documentElement.scrollLeft,\n y: (window.pageYOffset !== undefined) ? window.pageYOffset : document.documentElement.scrollTop\n };\n }\n\n function getElementPosition(el) {\n var\n elPosition = el.getBoundingClientRect(),\n pagePosition = getPagePosition();\n\n return {\n x: parseInt(elPosition.left,10) + parseInt(pagePosition.x,10),\n y: parseInt(elPosition.top,10) + parseInt(pagePosition.y,10)\n };\n }\n\n function findTarget(location) {\n function jumpToTarget(target) {\n var jumpPosition = getElementPosition(target);\n\n log('Moving to in page link (#'+hash+') at x: '+jumpPosition.x+' y: '+jumpPosition.y);\n sendMsg(jumpPosition.y, jumpPosition.x, 'scrollToOffset'); // X&Y reversed at sendMsg uses height/width\n }\n\n var\n hash = location.split('#')[1] || location, //Remove # if present\n hashData = decodeURIComponent(hash),\n target = document.getElementById(hashData) || document.getElementsByName(hashData)[0];\n\n if (undefined !== target) {\n jumpToTarget(target);\n } else {\n log('In page link (#' + hash + ') not found in iFrame, so sending to parent');\n sendMsg(0,0,'inPageLink','#'+hash);\n }\n }\n\n function checkLocationHash() {\n if ('' !== location.hash && '#' !== location.hash) {\n findTarget(location.href);\n }\n }\n\n function bindAnchors() {\n function setupLink(el) {\n function linkClicked(e) {\n e.preventDefault();\n\n /*jshint validthis:true */\n findTarget(this.getAttribute('href'));\n }\n\n if ('#' !== el.getAttribute('href')) {\n addEventListener(el,'click',linkClicked);\n }\n }\n\n Array.prototype.forEach.call( document.querySelectorAll( 'a[href^=\"#\"]' ), setupLink );\n }\n\n function bindLocationHash() {\n addEventListener(window,'hashchange',checkLocationHash);\n }\n\n function initCheck() { //check if page loaded with location hash after init resize\n setTimeout(checkLocationHash,eventCancelTimer);\n }\n\n function enableInPageLinks() {\n /* istanbul ignore else */ // Not testable in phantonJS\n if(Array.prototype.forEach && document.querySelectorAll) {\n log('Setting up location.hash handlers');\n bindAnchors();\n bindLocationHash();\n initCheck();\n } else {\n warn('In page linking not fully supported in this browser! (See README.md for IE8 workaround)');\n }\n }\n\n if(inPageLinks.enable) {\n enableInPageLinks();\n } else {\n log('In page linking not enabled');\n }\n\n return {\n findTarget:findTarget\n };\n }\n\n function setupPublicMethods() {\n log('Enable public methods');\n\n win.parentIFrame = {\n\n autoResize: function autoResizeF(resize) {\n if (true === resize && false === autoResize) {\n autoResize=true;\n startEventListeners();\n //sendSize('autoResize','Auto Resize enabled');\n } else if (false === resize && true === autoResize) {\n autoResize=false;\n stopEventListeners();\n }\n\n return autoResize;\n },\n\n close: function closeF() {\n sendMsg(0,0,'close');\n teardown();\n },\n\n getId: function getIdF() {\n return myID;\n },\n\n getPageInfo: function getPageInfoF(callback) {\n if ('function' === typeof callback) {\n pageInfoCallback = callback;\n sendMsg(0,0,'pageInfo');\n } else {\n pageInfoCallback = function() {};\n sendMsg(0,0,'pageInfoStop');\n }\n },\n\n moveToAnchor: function moveToAnchorF(hash) {\n inPageLinks.findTarget(hash);\n },\n\n reset: function resetF() {\n resetIFrame('parentIFrame.reset');\n },\n\n scrollTo: function scrollToF(x,y) {\n sendMsg(y,x,'scrollTo'); // X&Y reversed at sendMsg uses height/width\n },\n\n scrollToOffset: function scrollToF(x,y) {\n sendMsg(y,x,'scrollToOffset'); // X&Y reversed at sendMsg uses height/width\n },\n\n sendMessage: function sendMessageF(msg,targetOrigin) {\n sendMsg(0,0,'message',JSON.stringify(msg),targetOrigin);\n },\n\n setHeightCalculationMethod: function setHeightCalculationMethodF(heightCalculationMethod) {\n heightCalcMode = heightCalculationMethod;\n checkHeightMode();\n },\n\n setWidthCalculationMethod: function setWidthCalculationMethodF(widthCalculationMethod) {\n widthCalcMode = widthCalculationMethod;\n checkWidthMode();\n },\n\n setTargetOrigin: function setTargetOriginF(targetOrigin) {\n log('Set targetOrigin: '+targetOrigin);\n targetOriginDefault = targetOrigin;\n },\n\n size: function sizeF(customHeight, customWidth) {\n var valString = ''+(customHeight?customHeight:'')+(customWidth?','+customWidth:'');\n //lockTrigger();\n sendSize('size','parentIFrame.size('+valString+')', customHeight, customWidth);\n }\n };\n }\n\n function initInterval() {\n if ( 0 !== interval ) {\n log('setInterval: '+interval+'ms');\n intervalTimer = setInterval(function() {\n sendSize('interval','setInterval: '+interval);\n },Math.abs(interval));\n }\n }\n\n /* istanbul ignore next */ //Not testable in PhantomJS\n function setupBodyMutationObserver() {\n function addImageLoadListners(mutation) {\n function addImageLoadListener(element) {\n if (false === element.complete) {\n log('Attach listeners to ' + element.src);\n element.addEventListener('load', imageLoaded, false);\n element.addEventListener('error', imageError, false);\n elements.push(element);\n }\n }\n\n if (mutation.type === 'attributes' && mutation.attributeName === 'src') {\n addImageLoadListener(mutation.target);\n } else if (mutation.type === 'childList') {\n Array.prototype.forEach.call(\n mutation.target.querySelectorAll('img'),\n addImageLoadListener\n );\n }\n }\n\n function removeFromArray(element) {\n elements.splice(elements.indexOf(element),1);\n }\n\n function removeImageLoadListener(element) {\n log('Remove listeners from ' + element.src);\n element.removeEventListener('load', imageLoaded, false);\n element.removeEventListener('error', imageError, false);\n removeFromArray(element);\n }\n\n function imageEventTriggered(event,type,typeDesc) {\n removeImageLoadListener(event.target);\n sendSize(type, typeDesc + ': ' + event.target.src, undefined, undefined);\n }\n\n function imageLoaded(event) {\n imageEventTriggered(event,'imageLoad','Image loaded');\n }\n\n function imageError(event) {\n imageEventTriggered(event,'imageLoadFailed','Image load failed');\n }\n\n function mutationObserved(mutations) {\n sendSize('mutationObserver','mutationObserver: ' + mutations[0].target + ' ' + mutations[0].type);\n\n //Deal with WebKit asyncing image loading when tags are injected into the page\n mutations.forEach(addImageLoadListners);\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 log('Create body MutationObserver');\n observer.observe(target, config);\n\n return observer;\n }\n\n var\n elements = [],\n MutationObserver = window.MutationObserver || window.WebKitMutationObserver,\n observer = createMutationObserver();\n\n return {\n disconnect: function () {\n if ('disconnect' in observer) {\n log('Disconnect body MutationObserver');\n observer.disconnect();\n elements.forEach(removeImageLoadListener);\n }\n }\n };\n }\n\n function setupMutationObserver() {\n var\tforceIntervalTimer = 0 > interval;\n\n /* istanbul ignore if */ // Not testable in PhantomJS\n if (window.MutationObserver || window.WebKitMutationObserver) {\n if (forceIntervalTimer) {\n initInterval();\n } else {\n bodyObserver = setupBodyMutationObserver();\n }\n } else {\n log('MutationObserver not supported in this browser!');\n initInterval();\n }\n }\n\n\n // document.documentElement.offsetHeight is not reliable, so\n // we have to jump through hoops to get a better value.\n function getComputedStyle(prop,el) {\n /* istanbul ignore next */ //Not testable in PhantomJS\n function convertUnitsToPxForIE8(value) {\n var PIXEL = /^\\d+(px)?$/i;\n\n if (PIXEL.test(value)) {\n return parseInt(value,base);\n }\n\n var\n style = el.style.left,\n runtimeStyle = el.runtimeStyle.left;\n\n el.runtimeStyle.left = el.currentStyle.left;\n el.style.left = value || 0;\n value = el.style.pixelLeft;\n el.style.left = style;\n el.runtimeStyle.left = runtimeStyle;\n\n return value;\n }\n\n var retVal = 0;\n el = el || document.body;\n\n /* istanbul ignore else */ // Not testable in phantonJS\n if (('defaultView' in document) && ('getComputedStyle' in document.defaultView)) {\n retVal = document.defaultView.getComputedStyle(el, null);\n retVal = (null !== retVal) ? retVal[prop] : 0;\n } else {//IE8\n retVal = convertUnitsToPxForIE8(el.currentStyle[prop]);\n }\n\n return parseInt(retVal,base);\n }\n\n function chkEventThottle(timer) {\n if(timer > throttledTimer/2) {\n throttledTimer = 2*timer;\n log('Event throttle increased to ' + throttledTimer + 'ms');\n }\n }\n\n //Idea from https://github.com/guardian/iframe-messenger\n function getMaxElement(side,elements, useMargin) {\n useMargin = (typeof useMargin === 'undefined' ? true : useMargin); \n var\n elementsLength = elements.length,\n elVal = 0,\n maxVal = 0,\n Side = capitalizeFirstLetter(side),\n timer = getNow();\n\n for (var i = 0; i < elementsLength; i++) {\n var marginHeight = getComputedStyle('margin' + Side, elements[i]);\n elVal = elements[i].getBoundingClientRect()[side] + getComputedStyle('margin'+Side,elements[i]) + (useMargin ? marginHeight : 0);\n if (elVal > maxVal) {\n maxVal = elVal;\n }\n }\n\n timer = getNow() - timer;\n\n log('Parsed '+elementsLength+' HTML elements');\n log('Element position calculated in ' + timer + 'ms');\n\n chkEventThottle(timer);\n\n return maxVal;\n }\n\n function getAllMeasurements(dimention) {\n return [\n dimention.bodyOffset(),\n dimention.bodyScroll(),\n dimention.documentElementOffset(),\n dimention.documentElementScroll()\n ];\n }\n\n function getTaggedElements(side,tag) {\n function noTaggedElementsFound() {\n warn('No tagged elements ('+tag+') found on page');\n return document.querySelectorAll('body *');\n }\n\n var elements = document.querySelectorAll('['+tag+']');\n\n if (0 === elements.length) noTaggedElementsFound();\n\n return getMaxElement(side,elements);\n }\n\n function getAllElements() {\n return document.querySelectorAll('body *');\n }\n\n var\n getHeight = {\n bodyOffset: function getBodyOffsetHeight() {\n return document.body.offsetHeight + getComputedStyle('marginTop') + getComputedStyle('marginBottom');\n },\n\n offset: function() {\n return getHeight.bodyOffset(); //Backwards compatability\n },\n\n bodyScroll: function getBodyScrollHeight() {\n return document.body.scrollHeight;\n },\n\n custom: function getCustomWidth() {\n return customCalcMethods.height();\n },\n\n documentElementOffset: function getDEOffsetHeight() {\n return document.documentElement.offsetHeight;\n },\n\n documentElementScroll: function getDEScrollHeight() {\n return document.documentElement.scrollHeight;\n },\n\n max: function getMaxHeight() {\n return Math.max.apply(null,getAllMeasurements(getHeight));\n },\n\n min: function getMinHeight() {\n return Math.min.apply(null,getAllMeasurements(getHeight));\n },\n\n grow: function growHeight() {\n return getHeight.max(); //Run max without the forced downsizing\n },\n\n lowestElement: function getBestHeight() {\n return Math.max(getHeight.bodyOffset() || getHeight.documentElementOffset(), getMaxElement('bottom',getAllElements()));\n },\n\n taggedElement: function getTaggedElementsHeight() {\n return getTaggedElements('bottom','data-iframe-height');\n },\n\n lowestElementNoMargin: function getBestHeight() {\n return Math.max(getHeight.bodyOffset(), getMaxElement('bottom', getAllElements(), false));\n },\n },\n\n getWidth = {\n bodyScroll: function getBodyScrollWidth() {\n return document.body.scrollWidth;\n },\n\n bodyOffset: function getBodyOffsetWidth() {\n return document.body.offsetWidth;\n },\n\n custom: function getCustomWidth() {\n return customCalcMethods.width();\n },\n\n documentElementScroll: function getDEScrollWidth() {\n return document.documentElement.scrollWidth;\n },\n\n documentElementOffset: function getDEOffsetWidth() {\n return document.documentElement.offsetWidth;\n },\n\n scroll: function getMaxWidth() {\n return Math.max(getWidth.bodyScroll(), getWidth.documentElementScroll());\n },\n\n max: function getMaxWidth() {\n return Math.max.apply(null,getAllMeasurements(getWidth));\n },\n\n min: function getMinWidth() {\n return Math.min.apply(null,getAllMeasurements(getWidth));\n },\n\n rightMostElement: function rightMostElement() {\n return getMaxElement('right', getAllElements());\n },\n\n taggedElement: function getTaggedElementsWidth() {\n return getTaggedElements('right', 'data-iframe-width');\n }\n };\n\n\n function sizeIFrame(triggerEvent, triggerEventDesc, customHeight, customWidth) {\n\n function resizeIFrame() {\n height = currentHeight;\n width = currentWidth;\n if (height > 50) { //do not set height if its less then\n sendMsg(height,width,triggerEvent);\n }\n }\n\n function isSizeChangeDetected() {\n function checkTolarance(a,b) {\n var retVal = Math.abs(a-b) <= tolerance;\n return !retVal;\n }\n\n currentHeight = (undefined !== customHeight) ? customHeight : getHeight[heightCalcMode]();\n currentWidth = (undefined !== customWidth ) ? customWidth : getWidth[widthCalcMode]();\n\n return\tcheckTolarance(height,currentHeight) || (calculateWidth && checkTolarance(width,currentWidth));\n }\n\n function isForceResizableEvent() {\n return !(triggerEvent in {'init':1,'interval':1,'size':1});\n }\n\n function isForceResizableCalcMode() {\n return (heightCalcMode in resetRequiredMethods) || (calculateWidth && widthCalcMode in resetRequiredMethods);\n }\n\n function logIgnored() {\n log('No change in size detected');\n }\n\n function checkDownSizing() {\n if (isForceResizableEvent() && isForceResizableCalcMode()) {\n resetIFrame(triggerEventDesc);\n } else if (!(triggerEvent in {'interval':1})) {\n logIgnored();\n }\n }\n\n var\tcurrentHeight,currentWidth;\n\n if (isSizeChangeDetected() || 'init' === triggerEvent) {\n lockTrigger();\n resizeIFrame();\n } else {\n checkDownSizing();\n }\n }\n\n var sizeIFrameThrottled = throttle(sizeIFrame);\n\n function sendSize(triggerEvent, triggerEventDesc, customHeight, customWidth) {\n function recordTrigger() {\n if (!(triggerEvent in {'reset':1,'resetPage':1,'init':1})) {\n log( 'Trigger event: ' + triggerEventDesc );\n }\n }\n\n function isDoubleFiredEvent() {\n return triggerLocked && (triggerEvent in doubleEventList);\n }\n\n if (!isDoubleFiredEvent()) {\n recordTrigger();\n if (triggerEvent === 'init') {\n sizeIFrame(triggerEvent, triggerEventDesc, customHeight, customWidth);\n } else {\n sizeIFrameThrottled(triggerEvent, triggerEventDesc, customHeight, customWidth);\n }\n } else {\n log('Trigger event cancelled: '+triggerEvent);\n }\n }\n\n function lockTrigger() {\n if (!triggerLocked) {\n triggerLocked = true;\n log('Trigger event lock on');\n }\n clearTimeout(triggerLockedTimer);\n triggerLockedTimer = setTimeout(function() {\n triggerLocked = false;\n log('Trigger event lock off');\n log('--');\n },eventCancelTimer);\n }\n\n function triggerReset(triggerEvent) {\n height = getHeight[heightCalcMode]();\n width = getWidth[widthCalcMode]();\n 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':' + msg : '');\n\n log('Sending message to host page (' + message + ')');\n target.postMessage( msgID + message, targetOrigin);\n }\n\n if(true === sendPermit) {\n setTargetOrigin();\n sendToParent();\n }\n }\n\n function receiver(event) {\n var processRequestFromParent = {\n init: function initFromParent() {\n function fireInit() {\n initMsg = event.data;\n target = event.source;\n\n init();\n firstRun = false;\n setTimeout(function() { initLock = false;},eventCancelTimer);\n }\n\n if (document.readyState === \"interactive\" || document.readyState === \"complete\") {\n fireInit();\n } else {\n log('Waiting for page ready');\n addEventListener(window,'readystatechange',processRequestFromParent.initFromParent);\n }\n },\n\n reset: function resetFromParent() {\n if (!initLock) {\n log('Page size reset by host page');\n triggerReset('resetPage');\n } else {\n log('Page reset ignored by init');\n }\n },\n\n resize: function resizeFromParent() {\n sendSize('resizeParent','Parent window requested size check');\n },\n\n moveToAnchor: function moveToAnchorF() {\n inPageLinks.findTarget(getData());\n },\n inPageLink: function inPageLinkF() {this.moveToAnchor();}, //Backward compatability\n\n pageInfo: function pageInfoFromParent() {\n var msgBody = getData();\n log('PageInfoFromParent called from parent: ' + msgBody );\n pageInfoCallback(JSON.parse(msgBody));\n log(' --');\n },\n\n message: function messageFromParent() {\n var msgBody = getData();\n\n log('MessageCallback called from parent: ' + msgBody );\n messageCallback(JSON.parse(msgBody));\n log(' --');\n }\n };\n\n function isMessageForUs() {\n return msgID === (''+event.data).substr(0,msgIdLen); //''+ Protects against non-string messages\n }\n\n function getMessageType() {\n return event.data.split(']')[1].split(':')[0];\n }\n\n function getData() {\n return event.data.substr(event.data.indexOf(':')+1);\n }\n\n function isMiddleTier() {\n return !(typeof module !== 'undefined' && module.exports) && ('iFrameResize' in window);\n }\n\n function isInitMsg() {\n //Test if this message is from a child below us. 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Bradshaw - dave@bradshaw.net + * Copyright: (c) 2019 David J. 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Bradshaw - dave@bradshaw.net + * Copyright: (c) 2019 David J. Bradshaw - dave@bradshaw.net * License: MIT */ diff --git a/src/iframeResizer.contentWindow.js b/src/iframeResizer.contentWindow.js index d9807b81c..63171dc42 100644 --- a/src/iframeResizer.contentWindow.js +++ b/src/iframeResizer.contentWindow.js @@ -313,9 +313,9 @@ manageTriggerEvent({method:method, eventType: 'Transition Start', eventNames: ['transitionstart','webkitTransitionStart','MSTransitionStart','oTransitionStart','otransitionstart'] }); manageTriggerEvent({method:method, eventType: 'Transition Iteration', eventNames: ['transitioniteration','webkitTransitionIteration','MSTransitionIteration','oTransitionIteration','otransitioniteration'] }); manageTriggerEvent({method:method, eventType: 'Transition End', eventNames: ['transitionend','webkitTransitionEnd','MSTransitionEnd','oTransitionEnd','otransitionend'] }); - if('child' === resizeFrom) { + //if('child' === resizeFrom) { // to fix on tab change before iframe loads. manageTriggerEvent({method:method, eventType: 'IFrame Resized', eventName: 'resize' }); - } + //} } function checkCalcMode(calcMode,calcModeDefault,modes,type) { @@ -721,7 +721,8 @@ } //Idea from https://github.com/guardian/iframe-messenger - function getMaxElement(side,elements) { + function getMaxElement(side,elements, useMargin) { + useMargin = (typeof useMargin === 'undefined' ? true : useMargin); var elementsLength = elements.length, elVal = 0, @@ -730,7 +731,8 @@ timer = getNow(); for (var i = 0; i < elementsLength; i++) { - elVal = elements[i].getBoundingClientRect()[side] + getComputedStyle('margin'+Side,elements[i]); + var marginHeight = getComputedStyle('margin' + Side, elements[i]); + elVal = elements[i].getBoundingClientRect()[side] + getComputedStyle('margin'+Side,elements[i]) + (useMargin ? marginHeight : 0); if (elVal > maxVal) { maxVal = elVal; } @@ -816,7 +818,11 @@ taggedElement: function getTaggedElementsHeight() { return getTaggedElements('bottom','data-iframe-height'); - } + }, + + lowestElementNoMargin: function getBestHeight() { + return Math.max(getHeight.bodyOffset(), getMaxElement('bottom', getAllElements(), false)); + }, }, getWidth = { @@ -867,8 +873,9 @@ function resizeIFrame() { height = currentHeight; width = currentWidth; - - sendMsg(height,width,triggerEvent); + if (height > 50) { //do not set height if its less then + sendMsg(height,width,triggerEvent); + } } function isSizeChangeDetected() { @@ -954,8 +961,9 @@ function triggerReset(triggerEvent) { height = getHeight[heightCalcMode](); width = getWidth[widthCalcMode](); - - sendMsg(height,width,triggerEvent); + if (height > 50) { + sendMsg(height,width,triggerEvent); + } } function resetIFrame(triggerEventDesc) {