ajax-form minified for "Beyond jQuery" book cover.js

(function(){var arrayOf=function(pseudoArray){return Array.prototype.slice.call(pseudoArray)},fire=function(node,type,_detail_){var detail=_detail_===null||_detail_===undefined?{}:_detail_,event=new CustomEvent(type,{bubbles:true,cancelable:true,detail:detail});if(customPreventDefaultIgnored)event.preventDefault=function(){Object.defineProperty(this,"defaultPrevented",{get:function(){return true}})};node.dispatchEvent(event);return event},customPreventDefaultIgnored=function(){var tempElement=document.createElement("div"),
event=fire(tempElement,"foobar");event.preventDefault();return!event.defaultPrevented}(),getEnctype=function(ajaxForm){var enctype=ajaxForm.getAttribute("enctype");return enctype||"application/x-www-form-urlencoded"},getValidMethod=function(method){if(method){var proposedMethod=method.toUpperCase();if(["GET","POST","PUT","PATCH"].indexOf(proposedMethod)>=0)return proposedMethod}},importDoc=document._currentScript.ownerDocument,interceptSubmit=function(ajaxForm){ajaxForm.addEventListener("submit",
function(event){event.preventDefault();event.stopPropagation();if(ajaxForm.checkValidity())sendFormData(ajaxForm)});var fakeSubmitEl=document.createElement("input");fakeSubmitEl.setAttribute("type","submit");fakeSubmitEl.style.display="none";ajaxForm.appendChild(fakeSubmitEl);ajaxForm.submit=function(){ajaxForm._preventValidityCheck=false;if(ajaxForm.checkValidity())fire(ajaxForm,"submit");else{ajaxForm._preventValidityCheck=true;fakeSubmitEl.click()}}},isCheckboxOrRadioButton=function(element){var elementType=
element.type,role=element.getAttribute("role");return elementType==="checkbox"||role==="checkbox"||elementType==="radio"||role==="radio"},maybeParseCoreDropdownMenu=function(customElement,data){if(customElement.tagName.toLowerCase()==="core-dropdown-menu"||customElement.tagName.toLowerCase()==="paper-dropdown-menu"){var coreMenu=customElement.querySelector("core-menu"),selectedItem=coreMenu&&coreMenu.selectedItem;if(selectedItem)processFormValue(customElement.getAttribute("name"),selectedItem.label||
selectedItem.textContent,data);return true}},maybeParseCustomElementOrFileInput=function(spec){var name=spec.customElement.getAttribute("name");spec.name=name;if(spec.customElement.tagName.indexOf("-")>=0)if(isCheckboxOrRadioButton(spec.customElement)){var radioValue=parseRadioElementValue(spec.customElement);if(radioValue){processFormValue(name,radioValue,spec.data);return true}}else if(spec.customElement.files){maybeParseFileInput(spec);return true}else{if(!spec.customElement.files){processFormValue(name,
spec.customElement.value,spec.data);return true}}else if(spec.customElement.files){maybeParseFileInput(spec);return true}},maybeParseFileInput=function(spec){if(spec.parseFileInputs){processFormValue(spec.name,arrayOf(spec.customElement.files),spec.data);spec.form._fileInputFieldNames.push(spec.name)}},parseCustomElements=function(form,parseFileInputs){var data={};form._fileInputFieldNames=[];arrayOf(form.querySelectorAll("*[name]")).forEach(function(el){maybeParseCoreDropdownMenu(el,data)||maybeParseCustomElementOrFileInput({customElement:el,
data:data,form:form,parseFileInputs:parseFileInputs})});return data},parseElementValue=function(element){var elementValue,elementTag=element.tagName.toLowerCase();if(elementTag==="input"&&element.type!=="file")elementValue=parseInputElementValue(element);else if(elementTag==="textarea")elementValue=element.value||"";else if(elementTag==="select")elementValue=parseSelectElementValues(element);return elementValue},parseForm=function(form,parseFileInputs){var formObj={},formElements=form.querySelectorAll("input"),
customElementsData=parseCustomElements(form,parseFileInputs);formElements=arrayOf(formElements);formElements=formElements.concat(arrayOf(form.querySelectorAll("select")));formElements=formElements.concat(arrayOf(form.querySelectorAll("textarea")));formElements.forEach(function(formElement){var key=formElement.name,val=parseElementValue(formElement);if(key&&val!=null)processFormValue(key,val,formObj)});Object.keys(customElementsData).forEach(function(fieldName){processFormValue(fieldName,customElementsData[fieldName],
formObj)});return formObj},parseInputElementValue=function(element){var elementValue,elementType=element.type;if(element.disabled===true||["submit","reset","button","image"].indexOf(elementType)!==-1);else if(isCheckboxOrRadioButton(element))elementValue=parseRadioElementValue(element);else elementValue=element.value||"";return elementValue},parseRadioElementValue=function(element){var value;if(element.checked===true)value=element.value;return value},parseSelectOptionElementValue=function(element){var elementValue;
if(element.selected===true)elementValue=element.value;return elementValue},parseSelectElementValues=function(element){var elementValues=[];arrayOf(element.options).forEach(function(optionElement){var tempElementValue=parseSelectOptionElementValue(optionElement);tempElementValue&&elementValues.push(tempElementValue)});return elementValues},processFormValue=function(key,value,store){if(store[key])if(Array.isArray(store[key])&&store[key].length>1&&Array.isArray(store[key][1]))store[key].push([value]);
else{store[key]=[[store[key]]];store[key].push([value])}else store[key]=value},sendFormData=function(ajaxForm){var enctype=getEnctype(ajaxForm),formData=parseForm(ajaxForm,enctype==="multipart/form-data"),submittingEvent=fire(ajaxForm,"submitting",{formData:formData});if(!submittingEvent.defaultPrevented){formData=submittingEvent.detail.formData;if("multipart/form-data"!==enctype&&"application/json"!==enctype)sendUrlencodedForm(ajaxForm,formData);else if("GET"===ajaxForm.acceptableMethod)sendUrlencodedForm(ajaxForm,
formData);else if("multipart/form-data"===enctype)sendMultipartForm(ajaxForm,formData);else if("application/json"===enctype)sendJsonEncodedForm(ajaxForm,formData)}},sendJsonEncodedForm=function(ajaxForm,data){sendRequest({body:JSON.stringify(data),contentType:getEnctype(ajaxForm),form:ajaxForm})},sendMultipartForm=function(ajaxForm,data){var formData=new FormData;Object.keys(data).forEach(function(fieldName){var fieldValue=data[fieldName];if(Array.isArray(fieldValue))if(fieldValue.length===0&&ajaxForm._fileInputFieldNames.indexOf(fieldName)>=
0)formData.append(fieldName,new Blob([],{type:"application/octet-stream"}),"");else fieldValue.forEach(function(file){formData.append(fieldName,file)});else formData.append(fieldName,data[fieldName])});sendRequest({body:formData,form:ajaxForm})},sendRequest=function(options){var xhr=new XMLHttpRequest,customHeaders=options.form.getAttribute("headers");xhr.open(options.form.acceptableMethod,options.url||options.form.action);xhr.withCredentials=!!options.form.cookies;if(customHeaders){if(typeof customHeaders===
"string")customHeaders=JSON.parse(customHeaders);Object.keys(customHeaders).forEach(function(headerName){xhr.setRequestHeader(headerName,customHeaders[headerName])})}options.contentType&&xhr.setRequestHeader("Content-Type",options.contentType);xhr.onreadystatechange=function(){if(xhr.readyState===4)fire(options.form,"submitted",xhr)};xhr.send(options.body)},sendUrlencodedForm=function(ajaxForm,formData){var data=toQueryString(formData);if(ajaxForm.acceptableMethod==="POST")sendRequest({body:data,
contentType:getEnctype(ajaxForm),form:ajaxForm});else sendRequest({contentType:getEnctype(ajaxForm),form:ajaxForm,url:ajaxForm.action+(ajaxForm.action.indexOf("?")>0?"&":"?")+data})},toQueryString=function(params){var queryParams=[];Object.keys(params).forEach(function(key){var val=params[key];key=encodeURIComponent(key);if(val&&Object.prototype.toString.call(val)==="[object Array]")val.forEach(function(valInArray){queryParams.push(key+"="+encodeURIComponent(valInArray))});else queryParams.push(val==
null?key:key+"="+encodeURIComponent(val))});return queryParams.join("&")},watchForInvalidFields=function(ajaxForm){var config={attributes:true,childList:true,characterData:false},initialFields=arrayOf(ajaxForm.querySelectorAll(":invalid, :valid")),invalidFields=[],listenForInvalidEvent=function(field){field.willValidate&&field.addEventListener("invalid",function(){if(ajaxForm._preventValidityCheck)return;invalidFields.push(field.customElementRef||field);clearTimeout(timer);timer=setTimeout(function(){fire(ajaxForm,
"invalid",invalidFields);invalidFields=[];console.error("Form submission blocked - constraints violation.")},10)})},mutationHandler=new window.MutationObserver(function(records){records.forEach(function(record){if(record.addedNodes.length)arrayOf(record.addedNodes).forEach(function(addedNode){addedNode.willValidate&&listenForInvalidEvent(addedNode)})})}),timer=null;initialFields.forEach(function(field){listenForInvalidEvent(field)});mutationHandler.observe(ajaxForm,config)};document.registerElement("ajax-form",
{"extends":"form",prototype:Object.create(HTMLFormElement.prototype,{createdCallback:{value:function(){var templates=importDoc.querySelectorAll(".ajax-form-template"),template=templates[templates.length-1],clone=document.importNode(template.content,true),root=this.createShadowRoot();root.appendChild(clone);var ajaxForm=this;ajaxForm.acceptableMethod=getValidMethod(ajaxForm.getAttribute("method"));ajaxForm.acceptableMethod=ajaxForm.acceptableMethod||"GET";watchForInvalidFields(ajaxForm);interceptSubmit(ajaxForm);
fire(ajaxForm,"ready")}}})})})();