1 files changed, 69 insertions, 0 deletions
diff --git a/extlib/leaflet/src/map/ext/Map.Geolocation.js b/extlib/leaflet/src/map/ext/Map.Geolocation.js
new file mode 100644
index 00000000..328662b9
--- /dev/null
+++ b/extlib/leaflet/src/map/ext/Map.Geolocation.js
@@ -0,0 +1,69 @@
+/*
+ * Provides L.Map with convenient shortcuts for W3C geolocation.
+ */
+
+L.Map.include({
+	locate: function(/*Object*/ options) {
+		// W3C Geolocation API Spec position options, http://dev.w3.org/geo/api/spec-source.html#position-options
+		var opts = {timeout: 10000};
+		L.Util.extend(opts, options);
+		
+		if (navigator.geolocation) {
+			navigator.geolocation.getCurrentPosition(
+					L.Util.bind(this._handleGeolocationResponse, this),
+					L.Util.bind(this._handleGeolocationError, this),
+					opts);
+		} else {
+			this.fire('locationerror', {
+				code: 0,
+				message: "Geolocation not supported."
+			});
+		}
+		return this;
+	},
+	
+	locateAndSetView: function(maxZoom, options) {
+		this._setViewOnLocate = true;
+		this._maxLocateZoom = maxZoom || Infinity;
+		return this.locate(options);
+	},
+	
+	_handleGeolocationError: function(error) {
+		var c = error.code,
+			message = (c == 1 ? "permission denied" : 
+				(c == 2 ? "position unavailable" : "timeout"));
+		
+		if (this._setViewOnLocate) {
+			this.fitWorld();
+			this._setViewOnLocate = false;
+		}
+		
+		this.fire('locationerror', {
+			code: c,
+			message: "Geolocation 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);
+		
+		if (this._setViewOnLocate) {
+			var zoom = Math.min(this.getBoundsZoom(bounds), this._maxLocateZoom);
+			this.setView(bounds.getCenter(), zoom);
+			this._setViewOnLocate = false;
+		}
+		
+		this.fire('locationfound', {
+			latlng: new L.LatLng(lat, lng), 
+			bounds: bounds,
+			accuracy: pos.coords.accuracy
+		});
+	}
+});
+\ No newline at end of file