icingaweb2/public/js/icinga/timezone.js

/*! Icinga Web 2 | (c) 2014 Icinga Development Team | GPLv2+ */

(function(Icinga, $) {

    'use strict';

    /**
     * Write timezone information into a cookie
     *
     * @constructor
     */
    Icinga.Timezone = function() {
        this.cookieName = 'icingaweb2-tzo';
    };

    Icinga.Timezone.prototype = {
        /**
         * Initialize interface method
         */
        initialize: function () {
            this.writeTimezone();
        },

        destroy: function() {
            // PASS
        },

        /**
         * Write timezone information into cookie
         */
        writeTimezone: function() {
            if (this.readCookie(this.cookieName)) {
                return;
            }

            this.writeCookie(this.cookieName, Intl.DateTimeFormat().resolvedOptions().timeZone);
        },

        /**
         * Write cookie data
         *
         * @param {String} name
         * @param {String} value
         */
        writeCookie: function(name, value) {
            document.cookie = name + '=' + value + '; path=/';
        },

        /**
         * Read cookie data
         *
         * @param {String} name
         * @returns {*}
         */
        readCookie: function(name) {
            var nameEq = name + '=';
            var ca = document.cookie.split(';');
            for(var i=0;i < ca.length;i++) {
                var c = ca[i];
                while (c.charAt(0)==' ') {
                    c = c.substring(1,c.length);
                }
                if (c.indexOf(nameEq) == 0) {
                    return c.substring(nameEq.length,c.length);
                }
            }
            return null;
        }
    };

})(Icinga, jQuery);