protected override void OnElementChanged(ElementChangedEventArgs <CusMapView> e)
{
base.OnElementChanged(e);
if (e.OldElement != null)
{
Control.GeoViewTapped -= OnGeoViewTapped;
Control.GeoViewDoubleTapped -= OnGeoViewDoubleTapped;
Control.GeoViewHolding -= OnGeoViewHolding;
Control.NavigationCompleted -= OnNavigationCompleted;
Control.SpatialReferenceChanged -= OnSpatialReferenceChanged;
Control.DrawStatusChanged -= OnDrawStatusChanged;
Control.LayerViewStateChanged -= OnLayerViewStateChanged;
Control.Drag -= OnMapDrag;
Control.Touch -= OnMapTouch;
MessagingCenter.Unsubscribe <GeoView>(this, Constants.MessageCenterKeys.ShowCalloutAtKey);
}
CusMapView currentElement = e.NewElement;
if (currentElement != null)
{
_originMapView = _adapter.Adapter(currentElement);
if (Control == null)
{
SetNativeControl(_originMapView);
}
EsriEnumConverter.Init(_originMapView);
Control.GeoViewTapped += OnGeoViewTapped;
Control.GeoViewDoubleTapped += OnGeoViewDoubleTapped;
Control.GeoViewHolding += OnGeoViewHolding;
Control.NavigationCompleted += OnNavigationCompleted;
Control.SpatialReferenceChanged += OnSpatialReferenceChanged;
Control.DrawStatusChanged += OnDrawStatusChanged;
Control.LayerViewStateChanged += OnLayerViewStateChanged;
Control.Drag += OnMapDrag;
Control.Touch += OnMapTouch;
MessagingCenter.Subscribe <GeoView, Controls.CalloutDefinition>(this,
Constants.MessageCenterKeys.ShowCalloutAtKey, ShowCallout);
}
}
private void OnMapDrag(object sender, DragEventArgs e)
{
Element.OnDrag(sender, EsriEnumConverter.ConvertFrom(e));
}
private void OnMapTouch(object sender, TouchEventArgs e)
{
Element.OnTouch(sender, EsriEnumConverter.ConvertFrom(e));
}