This repository has been archived by the owner on Aug 6, 2020. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 3
/
demlocator.js
117 lines (106 loc) · 4.71 KB
/
demlocator.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
/* DemLocator - locates website visitors using HTML5 geolocation, but
* falls back to IP geolocation if that fails or isn't available.
*
* See README for usage instructions, examples, and general tomfoolery.
*
* Copyright (c) 2010, Democratic National Committee
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the Democratic National Committee nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE DEMOCRATIC NATIONAL COMITTEE BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
function DemLocator() {
var obj = this;
var locationData = {};
var debug = false;
this.setDebug = function(debug) {
this.debug = debug;
}
function debugLog(msg) {
if (obj.debug) console.log("DEBUG: " + msg);
}
this.getIPLocation = function() {
locationData.country = google.loader.ClientLocation.address.country;
if ('USA' == locationData.country) {
locationData.state = google.loader.ClientLocation.address.region;
locationData.country = 'US';
}
};
this.geo_step2_success_callback = function(response) {
if (!response || response.Status.code != 200) {
debugLog("Got a bad response from reverse-geocoder, attempting IP location");
if ( google.loader.ClientLocation ) {
obj.getIPLocation();
debugLog("IP location successful");
obj.success_callback(locationData);
return;
}
obj.error_callback("Got bad response from geolocator service");
return;
}
debugLog("Reverse-geocoding successful");
var place = response.Placemark[0];
locationData.country = place.AddressDetails.Country.CountryNameCode;
if ('US' == locationData.country) {
locationData.state = place.AddressDetails.Country.AdministrativeArea.AdministrativeAreaName;
if (place.AddressDetails.Country.AdministrativeArea.SubAdministrativeArea) {
locationData.zip = place.AddressDetails.Country.AdministrativeArea.SubAdministrativeArea.Locality.PostalCode.PostalCodeNumber;
} else {
locationData.zip = place.AddressDetails.Country.AdministrativeArea.Locality.PostalCode.PostalCodeNumber;
}
}
obj.success_callback(locationData);
};
this.geo_step1_success_callback = function(position) {
var latlng = new GLatLng(position.coords.latitude,position.coords.longitude);
var geocoder = new GClientGeocoder();
debugLog("Got lat/lng, attempting to reverse-geocode");
geocoder.getLocations(latlng, obj.geo_step2_success_callback, obj.geo_error_callback);
};
this.geo_error_callback = function(error) {
debugLog("HTML5 geocoding failed, attempting IP location");
if ( google.loader.ClientLocation ) {
obj.getIPLocation();
debugLog("IP location successful");
obj.success_callback(locationData);
return;
}
obj.error_callback(error);
};
this.getLocation = function(success_callback, error_callback) {
this.success_callback = success_callback;
this.error_callback = error_callback;
// try HTML 5 browser geolocation
if (navigator.geolocation) {
debugLog("Using HTML5 geolocation");
navigator.geolocation.getCurrentPosition(this.geo_step1_success_callback, this.geo_error_callback);
// try IP geolocation
} else if ( google.loader.ClientLocation ) {
debugLog("Using IP geolocation");
obj.getIPLocation();
this.success_callback(locationData);
} else {
this.error_callback("Could not obtain location");
}
};
}