forked from github/cordova-android
90 lines
2.6 KiB
JavaScript
90 lines
2.6 KiB
JavaScript
/**
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* This class provides access to device GPS data.
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* @constructor
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*/
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function Geolocation() {
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/**
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* The last known GPS position.
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*/
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this.lastPosition = null;
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this.lastError = null;
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this.listeners = null;
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};
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var geoListeners = [];
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Geolocation.prototype.getCurrentPosition = function(successCallback, errorCallback, options)
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{
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var position = Geo.getCurrentLocation();
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this.global_success = successCallback;
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this.fail = errorCallback;
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}
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// Run the global callback
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Geolocation.prototype.gotCurrentPosition = function(lat, lng, alt, altacc, head, vel, stamp)
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{
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if (lat == "undefined" || lng == "undefined")
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{
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this.fail();
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}
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else
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{
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coords = new Coordinates(lat, lng, alt, altacc, head, vel);
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loc = new Position(coords, stamp);
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this.lastPosition = loc;
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this.global_success(loc);
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}
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}
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/*
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* This turns on the GeoLocator class, which has two listeners.
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* The listeners have their own timeouts, and run independently of this process
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* In this case, we return the key to the watch hash
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*/
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Geolocation.prototype.watchPosition = function(successCallback, errorCallback, options)
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{
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var frequency = (options != undefined)? options.frequency : 10000;
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var key = geoListeners.push( {"success" : successCallback, "fail" : errorCallback }) - 1;
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// TO-DO: Get the names of the method and pass them as strings to the Java.
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return Geo.start(frequency, key);
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}
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/*
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* Retrieve and stop this listener from listening to the GPS
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*
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*/
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Geolocation.prototype.success = function(key, lat, lng, alt, altacc, head, vel, stamp)
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{
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var coords = new Coordinates(lat, lng, alt, altacc, head, vel);
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var loc = new Position(coords, stamp);
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geoListeners[key].success(loc);
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}
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Geolocation.prototype.fail = function(key)
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{
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geoListeners[key].fail();
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}
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Geolocation.prototype.clearWatch = function(watchId)
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{
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Geo.stop(watchId);
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}
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PhoneGap.addConstructor(function() {
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// Taken from Jesse's geo fix (similar problem) in PhoneGap iPhone. Go figure, same browser!
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function __proxyObj(origObj, proxyObj, funkList) {
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for (var v in funkList) {
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origObj[funkList[v]] = proxyObj[funkList[v]];
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}
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}
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// In case a native geolocation object exists, proxy the native one over to a diff object so that we can overwrite the native implementation.
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if (typeof navigator.geolocation != 'undefined') {
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navigator._geo = new Geolocation();
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__proxyObj(navigator.geolocation, navigator._geo, ["setLocation", "getCurrentPosition", "watchPosition", "clearWatch", "setError", "start", "stop", "gotCurrentPosition"]);
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} else {
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navigator.geolocation = new Geolocation();
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}
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}); |