https://www.xanax.com/-/media/Base-Themes/SearchTheme/Scripts/component-location-service.js

1
2/**
3 * Service that provides wrappers for geolocation API
4 * @module locationService
5 * @param  {jQuery} $ Instance of jQuery
6 * @return {Object} List of location service methods
7 */
8XA.component.locationService = (function ($, document) {
9
10    "use strict";
11    /**
12    * This object stores all public api methods.
13    * @type {Object.<Methods>}
14    * @memberOf module:locationService
15    */
16    var api = {},
17        getCurrentLocation,
18        getLocationOptions,
19        detectBrowser,
20        gettingLocation = false,
21        errorCallbacks = [],
22        successCallbacks = [],
23        reportError;
24
25    /**
26    * getCurrentLocation method call geolocation.getCurrentPosition API and call callback functions
27    * @memberOf module:locationService
28    * @param {Function} success function callback that calls in case of positive answer from geolocation API
29    * @param {Function} error function callback that calls in case of error answer from geolocation API
30    * @alias module:locationService.getCurrentLocation
31    * @private
32    */
33    getCurrentLocation = function (success, error) {
34        var i;
35
36        errorCallbacks.push(error);
37        successCallbacks.push(success);
38
39        if (gettingLocation) {
40            //process for getting current location started already, just subscribe for proper event and wait
41            return;
42        }
43        gettingLocation = true;
44        if (navigator.geolocation) {
45            navigator.geolocation.getCurrentPosition(
46                function (position) {
47                    for (i = 0; i < successCallbacks.length; i++) {
48                        successCallbacks[i]([position.coords.latitude, position.coords.longitude]);
49                    }
50                    gettingLocation = false;
51                },
52                function (error) {
53                    reportError("Error while detecting user location");
54                    gettingLocation = false;
55                },
56                getLocationOptions()
57            );
58        } else {
59            reportError("Your browser does not support geolocation");
60            gettingLocation = false;
61        }
62    };
63    /**
64    * getLocationOptions method return option for location search based on browser
65    * @memberOf module:locationService
66    * @alias module:locationService.getLocationOptions
67    * @returns {Object} list of option for location search
68    * @private
69    */
70    getLocationOptions = function () {
71        var browser = detectBrowser();
72        if (browser.indexOf("Chrome") !== -1) {
73            return {
74                enableHighAccuracy: true,
75                timeout: 10000,
76                maximumAge: 0
77            };
78        } else {
79            return {
80                timeout: 1000,
81                maximumAge: Infinity
82            };
83        }
84    };
85    /**
86    * detectBrowser method detects browser name and version
87    * @memberOf module:locationService
88    * @alias module:locationService.detectBrowser
89    * @returns {String} returns browser name and its version
90    * @private
91    */
92    detectBrowser = function () {
93        var ua = navigator.userAgent,
94            tem,
95            M = ua.match(/(opera|chrome|safari|firefox|msie|trident(?=\/))\/?\s*(\d+)/i) || [];
96
97        if (/trident/i.test(M[1])) {
98            tem = /\brv[ :]+(\d+)/g.exec(ua) || [];
99            return "IE " + (tem[1] || "");
100        }
101        if (M[1] === "Chrome") {
102            tem = ua.match(/\b(OPR|Edge)\/(\d+)/);
103            if (tem != null) {
104                return tem.slice(1).join(" ").replace("OPR", "Opera");
105            }
106        }
107        M = M[2] ? [M[1], M[2]] : [navigator.appName, navigator.appVersion, "-?"];
108        if ((tem = ua.match(/version\/(\d+)/i)) != null) {
109            M.splice(1, 1, tem[1]);
110        }
111        return M.join(" ");
112    };
113    /**
114    * reportError method adds error message to errorCallbacks array
115    * @memberOf module:locationService
116    * @param {String} errorMessage text of appeared error
117    * @alias module:locationService.reportError
118    * @private
119    */
120    reportError = function (errorMessage) {
121        var i;
122        for (i = 0; i < errorCallbacks.length; i++) {
123            if (typeof errorCallbacks[i] === "function") {
124                errorCallbacks[i](errorMessage);
125            }
126        }
127    };
128    /**
129    * detectLocation method call
130    * ["getCurrentLocation"]{@link module:locationService.getCurrentLocation} method 
131    * to get user location.
132    * @memberOf module:locationService
133    * @param {Function} success function callback that calls in case of positive answer from geolocation API
134    * @param {Function} error function callback that calls in case of error answer from geolocation API
135    * @alias module:locationService.detectLocation
136    */
137    api.detectLocation = function (success, error) {
138        getCurrentLocation(success, error);
139    };
140
141    return api;
142
143}(jQuery, document));
144
145XA.register("locationService", XA.component.locationService);