120 lines
3.0 KiB
JavaScript
120 lines
3.0 KiB
JavaScript
/*! Icinga Web 2 | (c) 2013-2015 Icinga Development Team | GPLv2+ */
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(function(Icinga, $) {
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'use strict';
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/**
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* Get the maximum timezone offset
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*
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* @returns {Number}
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*/
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Date.prototype.getStdTimezoneOffset = function() {
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if (Date.maxTimezoneOffset !== undefined) {
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return Date.maxTimezoneOffset;
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}
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var year = new Date().getYear();
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var previousOffset;
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for (var i=0; i<12; i++) {
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var d = new Date(year, i, 1);
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if (previousOffset !== undefined) {
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previousOffset = Math.max(previousOffset, d.getTimezoneOffset());
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} else {
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previousOffset = d.getTimezoneOffset();
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}
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}
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Date.maxTimezoneOffset = previousOffset;
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return Date.maxTimezoneOffset;
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};
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/**
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* Test for daylight saving time zone
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*
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* @returns {boolean}
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*/
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Date.prototype.isDst = function() {
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return (this.getStdTimezoneOffset() === this.getTimezoneOffset()) ? false : true;
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};
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/**
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* Write timezone information into a cookie
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*
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* @constructor
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*/
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Icinga.Timezone = function() {
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this.cookieName = 'icingaweb2-tzo';
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};
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Icinga.Timezone.prototype = {
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/**
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* Initialize interface method
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*/
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initialize: function () {
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this.writeTimezone();
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},
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destroy: function() {
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// PASS
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},
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/**
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* Write timezone information into cookie
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*/
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writeTimezone: function() {
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var date = new Date();
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var timezoneOffset = (date.getTimezoneOffset()*60) * -1;
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var dst = date.isDst();
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if (this.readCookie(this.cookieName)) {
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return;
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}
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this.writeCookie(this.cookieName, timezoneOffset + ',' + Number(dst), 1);
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},
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/**
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* Write cookie data
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*
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* @param {String} name
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* @param {String} value
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* @param {Number} days
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*/
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writeCookie: function(name, value, days) {
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var expires = '';
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if (days) {
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var date = new Date();
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date.setTime(date.getTime()+(days*24*60*60*1000));
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var expires = '; expires=' + date.toGMTString();
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}
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document.cookie = name + '=' + value + expires + '; path=/';
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},
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/**
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* Read cookie data
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*
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* @param {String} name
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* @returns {*}
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*/
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readCookie: function(name) {
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var nameEq = name + '=';
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var ca = document.cookie.split(';');
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for(var i=0;i < ca.length;i++) {
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var c = ca[i];
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while (c.charAt(0)==' ') {
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c = c.substring(1,c.length);
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}
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if (c.indexOf(nameEq) == 0) {
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return c.substring(nameEq.length,c.length);
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}
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}
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return null;
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}
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};
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})(Icinga, jQuery);
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