Example usage for com.google.gwt.geolocation.client Geolocation getCurrentPosition

Introduction

In this page you can find the example usage for com.google.gwt.geolocation.client Geolocation getCurrentPosition.

Prototype

public native void getCurrentPosition(Callback<Position, PositionError> callback,
        PositionOptions options) ;

Source Link

Document

Calls the callback with the user's current position, with additional options.

Usage

From source file:it.bz.tis.sasabus.html5.shared.ui.map.SASAbusMapAttachHandler.java

License:Open Source License

@Override
public void onAttachOrDetach(AttachEvent event) {
    if (event.isAttached()) {
        this.map.leafletMap = new Map(this.map.mapDiv.getElement());
        this.map.leafletMap.addLayer(new OSMLayer());

        this.map.fitAllAreas();

        this.map.refreshBaseLayerAfterZoomLevelAndPosition();

        this.map.leafletMap.addZoomEndEventListener(new EventListener() {
            @Override/*www  . j  a va2s. c  o  m*/
            public void onEvent() {
                SASAbusMapAttachHandler.this.map.refreshBaseLayerAfterZoomLevelAndPosition();
            }
        });
        this.map.leafletMap.addDragEndEventListener(new EventListener() {
            @Override
            public void onEvent() {
                SASAbusMapAttachHandler.this.map.refreshBaseLayerAfterZoomLevelAndPosition();
            }
        });

        this.map.gpsIcon.addClickHandler(new DMClickHandler() {

            @Override
            public void onClick(DMClickEvent event) {
                PositionOptions positionOptions = new PositionOptions();
                positionOptions.setHighAccuracyEnabled(true);
                positionOptions.setTimeout(10000);

                // http://openlayers.org/dev/examples/geolocation.html

                Geolocation geoloc = Geolocation.getIfSupported();
                if (geoloc != null) {
                    geoloc.getCurrentPosition(new Callback<Position, PositionError>() {
                        @Override
                        public void onSuccess(Position result) {

                            double lon = result.getCoordinates().getLongitude();
                            double lat = result.getCoordinates().getLatitude();
                            double accuracy = result.getCoordinates().getAccuracy();
                            Window.alert("lat: " + lat + " lon: " + lon + " acc (meter): " + accuracy);

                            LatLng position = new LatLng(lat, lon);
                            SASAbusMapAttachHandler.this.map.leafletMap.setView(position, 16);
                        }

                        @Override
                        public void onFailure(PositionError reason) {
                            Window.alert("Failure: " + reason.getMessage());
                        }
                    }, positionOptions);
                } else {
                    Window.alert("Your browser does not support localization");
                }
            }
        });

    }
}

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