private void SetVisualElement(VisualElement oldElement, VisualElement newElement)
{
if (oldElement != null)
{
_context = null;
_nativeView = null;
oldElement.PropertyChanged -= OnElementPropertyChanged;
}
if (newElement != null)
{
_nativeView = _renderer.ResolveViewFromRenderer();
_context = _nativeView.Context;
newElement.PropertyChanged += OnElementPropertyChanged;
}
IMaterialVisualElement oldMaterialVisualElement;
IMaterialVisualElement newMaterialVisualElement;
switch (oldElement)
{
case IBackgroundElement oldBackgroundElement:
oldMaterialVisualElement = oldBackgroundElement.Background;
break;
case IMaterialVisualElement oldMaterialElement:
oldMaterialVisualElement = oldMaterialElement;
break;
default:
oldMaterialVisualElement = oldElement == null ? null : BackgroundEffect.GetBackground(oldElement);
break;
}
switch (newElement)
{
case IBackgroundElement newBackgroundElement:
newMaterialVisualElement = newBackgroundElement.Background;
break;
case IMaterialVisualElement newMaterialElement:
newMaterialVisualElement = newMaterialElement;
break;
default:
newMaterialVisualElement = newElement == null ? null : BackgroundEffect.GetBackground(newElement);
break;
}
_visualElement = newElement;
SetBackgroundElement(oldMaterialVisualElement, newMaterialVisualElement);
}
private void SetVisualElement(VisualElement oldElement, VisualElement newElement)
{
if (oldElement != null)
{
_context = null;
_nativeView = null;
oldElement.PropertyChanged -= OnElementPropertyChanged;
}
if (newElement != null)
{
_nativeView = _renderer.ResolveViewFromRenderer();
_context = _nativeView.Context;
newElement.PropertyChanged += OnElementPropertyChanged;
}
_visualElement = newElement;
SetBackgroundElement(
GetMaterialVisualElement(oldElement),
GetMaterialVisualElement(newElement));
}