anchor.diff:  
     bool _canKeepMarkerInCenter = false;
     void _keepMarkerInCenter() {
  -    if (_canKeepMarkerInCenter && editionMode) {
  +    if (_canKeepMarkerInCenter && _editionMode) {
         if (_marker != null) {
           _marker.position = _googleMap.center;
           mapPosition.innerHtml = "${_googleMap.center.lat}, ${_googleMap.center.lng}";
  
positive.code: 
      mapPosition = new DivElement();
      mapAddress = new DivElement();
  
      map.append(mapAddress);
      map.append(mapCanvas);
      map.append(mapPosition);
  
      final mapOptions = new MapOptions()
        ..center = defaultPosition
        ..zoom = 6
        ..mapTypeId = MapTypeId.ROADMAP
        ..streetViewControl = false;
  
  
negative.code:   Marker _marker;
    DivElement mapPosition;
    DivElement mapAddress;
    CheckboxInputElement lock ;
    bool _editionMode;
  
    MapGeoLocation(this.map, this.mapSize, this.markerUrl, this.markerSize, {bool editionMode}) {
      this.map.style
        ..position = "relative"
        ..visibility = null;
      this.editionMode = editionMode ;
      init();
    }
  
    set editionMode(bool value){
      if (value == null) {
        _editionMode = true;
      }else{
        _editionMode = value;
      }
      if (_googleMap!= null){
        LatLngBounds bounds = _googleMap.bounds ;
        
        _googleMap.options = new MapOptions()
        ..draggable = _editionMode
        ..zoomControl = _editionMode
        ..disableDefaultUI = !_editionMode
        ..mapTypeControl = _editionMode
        ..mapTypeId = MapTypeId.ROADMAP
        ..streetViewControl = false;
      }
    }
    
    
    
    set user(User value) {
      _user = value;
      if (_user.hasLocation) {
  