http://healthmap.org/js/locator.js

1// this is for Firefox mainly - if we get to w3c geolocation and permission 
2// has not been granted to use location, we need to error out
3var timerId = window.setInterval(timedout, 10000);
4var locChanged = false;
5var geo_info = new Object();
6function timedout() {
7    set_user_location();  //just serve the map without lat/lon
8}
9
10function w3c_geolocate(callback) {
11  // Last but not least, try W3C Geolocation method (Preferred)
12  if(navigator.geolocation) {
13        navigator.geolocation.getCurrentPosition(function(position) { 
14            var latlng = [position.coords.latitude, position.coords.longitude];
15            callback(latlng);
16        }, function(error) {
17            set_user_location();
18        },{timeout:10000});
19  } else {
20    // Browser doesn't support Geolocation
21    set_user_location();  //just serve the map without lat/lon
22  }
23}
24
25function google_geo_by_address(address, callback) {
26    geocoder = new google.maps.Geocoder();
27    var locinfo = new Object();
28    geocoder.geocode( {'address': address }, function(results, status) {
29        if(status == "OK") {
30            locinfo['default_lat'] = ""+results[0].geometry.location.lat();
31            locinfo['default_lon'] = ""+results[0].geometry.location.lng();
32            locinfo['default_locname'] = ""+results[0].formatted_address;
33            var place_names = new Array();
34            place_names = locinfo['default_locname'].split(",");
35            var pnl = place_names.length;
36            var country_name = $.trim(place_names[pnl - 1]);
37            locinfo['default_country'] = ""+country_lu[country_name];
38        }
39        callback(locinfo);
40    });
41}
42
43function google_geo_by_ll(lat, lon, callback) {
44    if(!lat || !lon) {
45        w3c_geolocate();
46    }
47    geocoder = new google.maps.Geocoder();
48    var latlng = new google.maps.LatLng(lat, lon);
49    var locinfo = new Object();
50    geocoder.geocode( {'latLng': latlng }, function(results, status) {
51        if(status == "OK") {
52            locinfo['default_lat'] = lat;
53            locinfo['default_lon'] = lon;
54            locinfo['default_locname'] = results[0].formatted_address;
55            var place_names = new Array();
56            place_names = locinfo['default_locname'].split(",");
57            var pnl = place_names.length;
58            var country_name = $.trim(place_names[pnl - 1]);
59            locinfo['default_country'] = country_lu[country_name];
60        }
61        callback(locinfo);
62    });
63}
64
65// this is always called on pageload, then need to serve_map for first time
66function set_user_location(loc_info, hmu_id, preset_id, set_hm_cookie) {
67    // sometimes geo_info is not set, like if the user didn't accept geolocation
68    if(typeof(loc_info) == "undefined") {
69        geo_info['default_lat'] = worldlat;
70        geo_info['default_lon'] = worldlon;
71        geo_info['zoom_level'] = worldzoom;
72        geolocation = false;
73    } else {
74        geo_info = loc_info; // set this so it can be used globally
75    }
76    // allow for passing of lat/lon in the query string
77    if(typeof(passed_params['latlon']) != "undefined") {
78        var llarr = passed_params['latlon'].split(",");
79        geo_info['zoom_lat'] = llarr[0];
80        geo_info['zoom_lon'] = llarr[1];
81        geo_info['zoom_level'] = parseInt(llarr[2]);
82        passed_loc = true;
83    }
84    // set the geo_info to default if not set
85    geo_info['default_radius'] = geo_info['default_radius'] ? geo_info['default_radius'] : 50;
86    if(set_hm_cookie) {
87        var user_info = new Object();
88        user_info['hmu_id'] = hmu_id;
89        user_info['default_location'] = geo_info['default_lat']+","+geo_info['default_lon'];
90        user_info['default_locname'] = geo_info['default_locname'];
91        user_info['default_radius'] = geo_info['default_radius'];
92        user_info['default_country'] = geo_info['default_country'];
93        $.ajax({ url: "../authUser.php", dataType: 'json', data: user_info,
94            success: function(jsonData) {
95                //console.log(jsonData);
96            }
97        });
98    }
99    // geo_info comes in from google_geo_by_ll as an object: lat, lon, locname 
100    if(geolocation) {
101        // by default, show local info
102        //$('#radius_change').val(geo_info['default_radius']);
103        $("#locations_dropdown label:first").html('Your Location<span id="locname">: '+geo_info['default_locname']+'</span>');
104        // sometimes zoom is passed in
105        geo_info['zoom_level'] = geo_info['zoom_level'] ? geo_info['zoom_level'] : localzoom;
106    } else {
107        $("#currentlocation").parent().hide();
108    }
109
110    if(locChanged) {
111        return geo_info;
112    }
113
114    serve_map(hmu_id, preset_id);
115

116    // hide flucast site link if user is not in US
117    if(location_info['default_country'] != 106) {
118        $('#flucastsite').hide();
119    }
120    var state = location_info['default_locname'];
121   /*  $('#goviral').hide();
122    if((state.indexOf('MA') !== -1) || (state.indexOf('NY') !== -1)) {
123        $('#goviral').show();
124    }*/
125}