Map geolocation

src/map/MapGeolocationExt.js

@@ -0,0 +1,32 @@
+L.Map.include({
+	locate: function() {
+		if (navigator.geolocation) {
+			navigator.geolocation.getCurrentPosition(
+					L.Util.bind(this._handleGeolocationResponse, this),
+					L.Util.bind(this._handleGeolocationError, this));
+		}
+		return this;
+	},
+	
+	_handleGeolocationError: function(error) {
+		this.fire('locationerror', {message: error.message});
+	},
+	
+	_handleGeolocationResponse: function(pos) {
+		var latAccuracy = 180 * pos.coords.accuracy / 4e7,
+			lngAccuracy = latAccuracy * 2,
+			lat = pos.coords.latitude,
+			lng = pos.coords.longitude;
+		
+		var sw = new L.LatLng(lat - latAccuracy, lng - lngAccuracy),
+			ne = new L.LatLng(lat + latAccuracy, lng + lngAccuracy),
+			bounds = new L.LatLngBounds(sw, ne);
+		
+		this.fitBounds(bounds);
+		
+		this.fire('locationfound', {
+			latlng: new L.LatLng(lat, lng), 
+			bounds: bounds
+		});
+	}
+});