79 lines
2.6 KiB
JavaScript
79 lines
2.6 KiB
JavaScript
(function collonadeClosure() {
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'use strict';
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window.utils = window.utils || {};
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var ASYNC_FORM_RESPONSE_CLASS = 'async-form-response';
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var ASYNC_FORM_LOADING_CLASS = 'async-form-loading';
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var ASYNC_FORM_MIN_DELAY = 600;
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var DEFAULT_FAILURE_MESSAGE = 'The response we received from the server did not match what we expected. Please let us know this happened via the help widget in the top navigation.';
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window.utils.asyncForm = function(formElement, options) {
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options = options || {};
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var lastRequestTimestamp = 0;
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function setup() {
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formElement.addEventListener('submit', submitHandler);
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}
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function processResponse(response) {
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var responseElement = document.createElement('div');
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responseElement.classList.add(ASYNC_FORM_RESPONSE_CLASS);
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responseElement.innerHTML = response.content;
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var parentElement = formElement.parentElement;
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// make sure there is a delay between click and response
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var delay = Math.max(0, ASYNC_FORM_MIN_DELAY + lastRequestTimestamp - Date.now());
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setTimeout(function() {
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parentElement.insertBefore(responseElement, formElement);
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formElement.remove();
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}, delay);
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}
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function submitHandler(event) {
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event.preventDefault();
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formElement.classList.add(ASYNC_FORM_LOADING_CLASS)
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lastRequestTimestamp = Date.now();
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var url = formElement.getAttribute('action');
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var headers = { };
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var body = new FormData(formElement);
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if (options && options.headers) {
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Object.keys(options.headers).forEach(function(headerKey) {
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headers[headerKey] = options.headers[headerKey];
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});
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}
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window.utils.httpClient.post(url, headers, body)
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.then(function(response) {
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if (response.headers.get("content-type").indexOf("application/json") !== -1) {// checking response header
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return response.json();
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} else {
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throw new TypeError('Response from "' + url + '" has unexpected Content-Type. Expected: "application/json". Received: "' + (response.headers.get("content-type") || '(undefined)') + '"');
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}
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}).then(function(response) {
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processResponse(response[0]);
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}).catch(function(error) {
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var failureMessage = DEFAULT_FAILURE_MESSAGE;
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if (options.i18n && options.i18n.asyncFormFailure) {
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failureMessage = options.i18n.asyncFormFailure;
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}
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processResponse({ content: failureMessage });
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formElement.classList.remove(ASYNC_FORM_LOADING_CLASS);
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});
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}
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setup();
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return {
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scope: formElement,
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destroy: function() {},
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};
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};
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})();
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