public TreePageView()
{
InitializeComponent();
_tree = this.GetControl <TreeView>("tree");
_tree.ItemContainerGenerator.Index !.Materialized += TreeViewItemMaterialized;
_adorner = new Panel
{
ClipToBounds = false,
Children =
{
//Padding frame
new Border {
BorderBrush = new SolidColorBrush(Colors.Green, 0.5)
},
//Content frame
new Border {
Background = new SolidColorBrush(Color.FromRgb(160, 197, 232), 0.5)
},
//Margin frame
new Border {
BorderBrush = new SolidColorBrush(Colors.Yellow, 0.5)
}
},
};
AdornerLayer.SetIsClipEnabled(_adorner, false);
}
protected bool AttachAsAdorner(Visual parent, Rect position, T element)
{
Debug.Assert(element != null);
this.parent = parent;
adornerLayer = AdornerLayer.GetAdornerLayer(parent);
if (adornerLayer == null)
{
Despawn(false);
return(false);
}
adornerLayer.Children.Add(element);
AdornerLayer.SetAdornedElement(element, parent);
AdornerLayer.SetIsClipEnabled(element, false);
this.element = element;
element.Width = position.Width;
element.Height = position.Height;
element.HorizontalAlignment = HorizontalAlignment.Left;
element.VerticalAlignment = VerticalAlignment.Top;
element.Margin = new Thickness(position.X, position.Y, 0, 0);
if (parent.GetVisualRoot() is TopLevel toplevel)
{
clickDisposable = toplevel.AddDisposableHandler(InputElement.PointerPressedEvent, (s, ev) =>
{
bool hitTextbox = false;
ILogical?logical = ev.Source as ILogical;
while (logical != null)
{
if (ReferenceEquals(logical, element))
{
hitTextbox = true;
break;
}
logical = logical.LogicalParent;
}
if (!hitTextbox)
{
Despawn(true);
}
}, RoutingStrategies.Tunnel);
}
IsOpened = true;
return(true);
}
