96 lines
3.1 KiB
JavaScript
96 lines
3.1 KiB
JavaScript
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/**
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*
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* A helper function to utilize DateUtils quickly in display templates.
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*
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* @param: {string} data-datetime A pre-localized datetime string, assumed to be in UTC.
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* @param: {string} lang The user's preferred language.
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* @param: {string} data-timezone (optional) A user-set timezone preference.
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* @param: {object} data-format (optional) a format constant as defined in DataUtil.dateFormatEnum.
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* @param: {string} data-string (optional) a string for parsing through StringUtils after localizing
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* datetime
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*
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* @return: {string} a user-time, localized, formatted datetime string
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*
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*/
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(function(define) {
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'use strict';
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define([
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'jquery',
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'edx-ui-toolkit/js/utils/date-utils',
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'edx-ui-toolkit/js/utils/string-utils'
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], function($, DateUtils, StringUtils) {
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var DateUtilFactory;
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var localizedTime;
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var stringHandler;
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var displayDatetime;
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var isValid;
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var transform;
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transform = function(iterationKey) {
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var context;
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$(iterationKey).each(function() {
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if (isValid($(this).data('datetime'))) {
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context = {
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datetime: $(this).data('datetime'),
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timezone: $(this).data('timezone'),
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language: $(this).data('language'),
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format: DateUtils.dateFormatEnum[$(this).data('format')]
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};
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displayDatetime = stringHandler(
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localizedTime(context),
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$(this).data('string'),
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$(this).data('datetoken')
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);
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$(this).text(displayDatetime);
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} else {
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displayDatetime = stringHandler(
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$(this).data('string')
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);
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$(this).text(displayDatetime);
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}
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});
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};
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localizedTime = function(context) {
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return DateUtils.localize(context);
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};
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stringHandler = function(localTimeString, containerString, token) {
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var returnString;
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var interpolateDict = {};
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var dateToken;
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if (isValid(token)) {
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dateToken = token;
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} else {
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dateToken = 'date';
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}
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interpolateDict[dateToken] = localTimeString;
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if (isValid(containerString)) {
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returnString = StringUtils.interpolate(
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containerString,
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interpolateDict
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);
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} else {
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returnString = localTimeString;
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}
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return returnString;
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};
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isValid = function(candidateVariable) {
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return candidateVariable !== undefined
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&& candidateVariable !== ''
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&& candidateVariable !== 'Invalid date'
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&& candidateVariable !== 'None';
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};
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DateUtilFactory = {
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transform: transform,
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stringHandler: stringHandler
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};
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return DateUtilFactory;
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});
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}).call(this, define || RequireJS.define);
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