Momentor (moment optimization)

dev/Common/Momentor.js

@@ -0,0 +1,188 @@
+
+(function () {
+
+	'use strict';
+
+	var
+		window = require('window'),
+		$ = require('$'),
+		_ = require('_'),
+		moment = require('moment'),
+
+		Translator = require('Common/Translator')
+	;
+
+	/**
+	 * @constructor
+	 */
+	function Momentor()
+	{
+		this.format = _.bind(this.format, this);
+
+		this.updateMomentNow = _.debounce(_.bind(function () {
+			this._moment = moment();
+		}, this), 500, true);
+
+		this.updateMomentNowUnix = _.debounce(_.bind(function () {
+			this._momentNow = moment().unix();
+		}, this), 500, true);
+	}
+
+	Momentor.prototype._moment = null;
+	Momentor.prototype._momentNow = 0;
+
+	Momentor.prototype.momentNow = function ()
+	{
+		this.updateMomentNow();
+		return this._moment || moment();
+	};
+
+	Momentor.prototype.momentNowUnix = function ()
+	{
+		this.updateMomentNowUnix();
+		return this._momentNow || 0;
+	};
+
+	Momentor.prototype.searchSubtractFormatDateHelper = function (iDate)
+	{
+		var oM = this.momentNow();
+		return oM.clone().subtract('days', iDate).format('YYYY.MM.DD');
+	};
+
+	/**
+	 * @param {Object} oMoment
+	 * @return {string}
+	 */
+	Momentor.prototype.formatCustomShortDate = function (oMoment)
+	{
+		var
+			sResult = '',
+			oMomentNow = this.momentNow()
+		;
+
+		if (oMoment && oMomentNow)
+		{
+			if (4 >= oMomentNow.diff(oMoment, 'hours'))
+			{
+				sResult = oMoment.fromNow();
+			}
+			else if (oMomentNow.format('L') === oMoment.format('L'))
+			{
+				sResult = Translator.i18n('MESSAGE_LIST/TODAY_AT', {
+					'TIME': oMoment.format('LT')
+				});
+			}
+			else if (oMomentNow.clone().subtract('days', 1).format('L') === oMoment.format('L'))
+			{
+				sResult = Translator.i18n('MESSAGE_LIST/YESTERDAY_AT', {
+					'TIME': oMoment.format('LT')
+				});
+			}
+			else if (oMomentNow.year() === oMoment.year())
+			{
+				sResult = oMoment.format('D MMM.');
+			}
+			else
+			{
+				sResult = oMoment.format('LL');
+			}
+		}
+
+		return sResult;
+	};
+
+	/**
+	 * @param {number} iTimeStampInUTC
+	 * @param {string} sFormat
+	 * @return {string}
+	 */
+	Momentor.prototype.format = function (iTimeStampInUTC, sFormat)
+	{
+		var
+			oM = null,
+			sResult = '',
+			iNow = this.momentNowUnix()
+		;
+
+		iTimeStampInUTC = 0 < iTimeStampInUTC ? iTimeStampInUTC : (0 === iTimeStampInUTC ? iNow : 0);
+		iTimeStampInUTC = iNow < iTimeStampInUTC ? iNow : iTimeStampInUTC;
+
+		oM = 0 < iTimeStampInUTC ? moment.unix(iTimeStampInUTC) : null;
+
+		if (oM && 1970 === oM.year())
+		{
+			oM = null;
+		}
+
+		if (oM)
+		{
+			switch (sFormat)
+			{
+				case 'FROMNOW':
+					sResult = oM.fromNow();
+					break;
+				case 'SHORT':
+					sResult = this.formatCustomShortDate(oM);
+					break;
+				case 'FULL':
+					sResult = oM.format('LLL');
+					break;
+				default:
+					sResult = oM.format(sFormat);
+					break;
+			}
+		}
+
+		return sResult;
+	};
+
+	/**
+	 * @param {Object} oElement
+	 */
+	Momentor.prototype.momentToNode = function (oElement)
+	{
+		var
+			sKey = '',
+			iTime = 0,
+			$oEl = $(oElement)
+		;
+
+		iTime = $oEl.data('moment-time');
+		if (iTime)
+		{
+			sKey = $oEl.data('moment-format');
+
+			if (sKey)
+			{
+				$oEl.text(this.format(iTime, sKey));
+			}
+
+			sKey = $oEl.data('moment-format-title');
+			if (sKey)
+			{
+				$oEl.attr('title', this.format(iTime, sKey));
+			}
+		}
+	};
+
+	/**
+	 * @param {Object} oElements
+	 */
+	Momentor.prototype.momentToNodes = function (oElements)
+	{
+		var self = this;
+		_.defer(function () {
+			$('.moment', oElements).each(function () {
+				self.momentToNode(this);
+			});
+		});
+	};
+
+	Momentor.prototype.reload = function ()
+	{
+		this.momentToNodes(window.document);
+	};
+
+	module.exports = new Momentor();
+
+}());