this.onCurrentPositionSuccess = function (position) {
            console.log("Got reference position: " + JSON.stringify(position));
            _this.referencePosition = position;
            _this.trackingId = navigator.geolocation.watchPosition(_this.onWatchPositionSuccess, _this.onWatchPositionError, { maximumAge: 60000, enableHighAccuracy: false });
            console.log("Started tracking with watch ID " + _this.trackingId);
            _this.distanceComplication.enable();
            _this.changeSecondsHand();
        };
        this.onCurrentPositionError = function (error) {
            console.log("Error getting current position for reference: " + JSON.stringify(error));
            _this.currentState.hideState();
            _this.currentState = _this.DEFAULT_STATE;
            _this.currentState.renderState();
            _this.changeSecondsHand();
        };
        this.onWatchPositionSuccess = function (position) {
            if (_this.bearingElement.style.display === "none") {
                _this.bearingElement.style.display = "block";
            }
            console.log("Got new position: " + JSON.stringify(position));
            _this.distance = geolib.getDistance(position.coords, _this.referencePosition.coords);
            console.log("Calculated distance: " + _this.distance);
            _this.bearing = geolib.getBearing(position.coords, _this.referencePosition.coords);
            console.log("Calculated bearing: " + _this.bearing);
            _this.bearingElement.style.transform = "rotate(" + _this.bearing + "deg)";
            var cb = _this.onNewDataCbMap.get(_this.currentState.stateElement.id);
            if (cb) {
                cb(_this.distance);
                _this.currentState.renderState();
            }
            _this.distanceComplication.onInterval(_this.distance);
        };
        this.onWatchPositionError = function (error) {
            console.log("Error getting position: " + JSON.stringify(error));
        };