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// Copyright 2009 The Closure Library Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS-IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/**
* @fileoverview Locale independent date/time class.
*
*/
goog.provide('goog.date.UtcDateTime');
goog.require('goog.date');
goog.require('goog.date.Date');
goog.require('goog.date.DateTime');
goog.require('goog.date.Interval');
/**
* Class representing a date/time in GMT+0 time zone, without daylight saving.
* Defaults to current date and time if none is specified. The get... and the
* getUTC... methods are equivalent.
*
* @param {number|Object=} opt_year Four digit UTC year or a date-like object.
* If not set, the created object will contain the date determined by
* goog.now().
* @param {number=} opt_month UTC month, 0 = Jan, 11 = Dec.
* @param {number=} opt_date UTC date of month, 1 - 31.
* @param {number=} opt_hours UTC hours, 0 - 23.
* @param {number=} opt_minutes UTC minutes, 0 - 59.
* @param {number=} opt_seconds UTC seconds, 0 - 59.
* @param {number=} opt_milliseconds UTC milliseconds, 0 - 999.
* @constructor
* @extends {goog.date.DateTime}
*/
goog.date.UtcDateTime = function(opt_year, opt_month, opt_date, opt_hours,
opt_minutes, opt_seconds, opt_milliseconds) {
var timestamp;
if (goog.isNumber(opt_year)) {
timestamp = Date.UTC(opt_year, opt_month || 0, opt_date || 1,
opt_hours || 0, opt_minutes || 0, opt_seconds || 0,
opt_milliseconds || 0);
} else {
timestamp = opt_year ? opt_year.getTime() : goog.now();
}
this.date_ = new Date(timestamp);
};
goog.inherits(goog.date.UtcDateTime, goog.date.DateTime);
/**
* Creates a DateTime from a UTC datetime string expressed in ISO 8601 format.
*
* @param {string} formatted A date or datetime expressed in ISO 8601 format.
* @return {goog.date.UtcDateTime} Parsed date or null if parse fails.
*/
goog.date.UtcDateTime.fromIsoString = function(formatted) {
var ret = new goog.date.UtcDateTime(2000);
return goog.date.setIso8601DateTime(ret, formatted) ? ret : null;
};
/**
* Clones the UtcDateTime object.
*
* @return {!goog.date.UtcDateTime} A clone of the datetime object.
* @override
*/
goog.date.UtcDateTime.prototype.clone = function() {
var date = new goog.date.UtcDateTime(this.date_);
date.setFirstDayOfWeek(this.getFirstDayOfWeek());
date.setFirstWeekCutOffDay(this.getFirstWeekCutOffDay());
return date;
};
/** @override */
goog.date.UtcDateTime.prototype.add = function(interval) {
if (interval.years || interval.months) {
var yearsMonths = new goog.date.Interval(interval.years, interval.months);
goog.date.Date.prototype.add.call(this, yearsMonths);
}
var daysAndTimeMillis = 1000 * (
interval.seconds + 60 * (
interval.minutes + 60 * (
interval.hours + 24 * interval.days)));
this.date_ = new Date(this.date_.getTime() + daysAndTimeMillis);
};
/** @override */
goog.date.UtcDateTime.prototype.getTimezoneOffset = function() {
return 0;
};
/** @override */
goog.date.UtcDateTime.prototype.getFullYear =
goog.date.DateTime.prototype.getUTCFullYear;
/** @override */
goog.date.UtcDateTime.prototype.getMonth =
goog.date.DateTime.prototype.getUTCMonth;
/** @override */
goog.date.UtcDateTime.prototype.getDate =
goog.date.DateTime.prototype.getUTCDate;
/** @override */
goog.date.UtcDateTime.prototype.getHours =
goog.date.DateTime.prototype.getUTCHours;
/** @override */
goog.date.UtcDateTime.prototype.getMinutes =
goog.date.DateTime.prototype.getUTCMinutes;
/** @override */
goog.date.UtcDateTime.prototype.getSeconds =
goog.date.DateTime.prototype.getUTCSeconds;
/** @override */
goog.date.UtcDateTime.prototype.getMilliseconds =
goog.date.DateTime.prototype.getUTCMilliseconds;
/** @override */
goog.date.UtcDateTime.prototype.getDay =
goog.date.DateTime.prototype.getUTCDay;
/** @override */
goog.date.UtcDateTime.prototype.setFullYear =
goog.date.DateTime.prototype.setUTCFullYear;
/** @override */
goog.date.UtcDateTime.prototype.setMonth =
goog.date.DateTime.prototype.setUTCMonth;
/** @override */
goog.date.UtcDateTime.prototype.setDate =
goog.date.DateTime.prototype.setUTCDate;
/** @override */
goog.date.UtcDateTime.prototype.setHours =
goog.date.DateTime.prototype.setUTCHours;
/** @override */
goog.date.UtcDateTime.prototype.setMinutes =
goog.date.DateTime.prototype.setUTCMinutes;
/** @override */
goog.date.UtcDateTime.prototype.setSeconds =
goog.date.DateTime.prototype.setUTCSeconds;
/** @override */
goog.date.UtcDateTime.prototype.setMilliseconds =
goog.date.DateTime.prototype.setUTCMilliseconds;
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