void HideAdorner()
{
if (this.isAdornerVisible && this.adorner != null)
{
var layer = AdornerLayer.GetAdornerLayer(this.AssociatedObject);
Debug.WriteLineIf(layer == null, "Overlay: cannot find any AdornerLayer on the given element.");
if (layer != null)
{
layer.Remove(this.adorner);
this.adorner = null;
this.isAdornerVisible = false;
}
this.AssociatedObject.IsEnabled = this.wasEnabled;
}
}
static void OnContentPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs args)
{
if (!DesignTimeHelper.GetIsInDesignMode())
{
var control = ( FrameworkElement )d;
if (!control.IsLoaded)
{
control.Loaded += (s, e) =>
{
var layer = AdornerLayer.GetAdornerLayer(control);
Debug.WriteLineIf(layer == null, "Overlay: cannot find any AdornerLayer on the given element.");
if (layer != null)
{
var content = GetContent(control);
if (content != null)
{
var a = new ContentOverlayAdorner(control, content);
layer.Add(a);
SetOverlayAdorner(control, a);
}
}
};
control.Unloaded += (s, e) =>
{
var layer = AdornerLayer.GetAdornerLayer(control);
Debug.WriteLineIf(layer == null, "Overlay: cannot find any AdornerLayer on the given element.");
if (layer != null)
{
var a = GetOverlayAdorner(control);
if (a != null)
{
layer.Remove(a);
SetOverlayAdorner(control, null);
}
}
};
}
}
}
void ShowAdorner()
{
if (!this.isAdornerVisible)
{
var layer = AdornerLayer.GetAdornerLayer(this.AssociatedObject);
Debug.WriteLineIf(layer == null, "Overlay: cannot find any AdornerLayer on the given element.");
if (layer != null)
{
this.adorner = new ContentOverlayAdorner(this.AssociatedObject, this.Content)
{
IsHitTestVisible = this.IsHitTestVisible,
Background = this.Background
};
layer.Add(this.adorner);
this.wasEnabled = this.AssociatedObject.IsEnabled;
this.AssociatedObject.IsEnabled = !this.DisableAdornedElement;
this.isAdornerVisible = true;
}
}
}
static void SetOverlayAdorner(UIElement control, ContentOverlayAdorner value)
{
control.SetValue(OverlayAdornerProperty, value);
}
static void OnContentPropertyChanged( DependencyObject d, DependencyPropertyChangedEventArgs args )
{
if( !DesignTimeHelper.GetIsInDesignMode() )
{
var control = ( FrameworkElement )d;
if( !control.IsLoaded )
{
control.Loaded += ( s, e ) =>
{
var layer = AdornerLayer.GetAdornerLayer( control );
Debug.WriteLineIf( layer == null, "Overlay: cannot find any AdornerLayer on the given element." );
if( layer != null )
{
var content = GetContent( control );
if( content != null )
{
var a = new ContentOverlayAdorner( control, content );
layer.Add( a );
SetOverlayAdorner( control, a );
}
}
};
control.Unloaded += ( s, e ) =>
{
var layer = AdornerLayer.GetAdornerLayer( control );
Debug.WriteLineIf( layer == null, "Overlay: cannot find any AdornerLayer on the given element." );
if( layer != null )
{
var a = GetOverlayAdorner( control );
if( a != null )
{
layer.Remove( a );
SetOverlayAdorner( control, null );
}
}
};
}
}
}
static void SetOverlayAdorner( UIElement control, ContentOverlayAdorner value )
{
control.SetValue( OverlayAdornerProperty, value );
}