void AddChild(VisualElement view, IVisualElementRenderer oldRenderer = null, RendererPool pool = null, bool sameChildren = false)
{
Performance.Start(out string reference);
if (CompressedLayout.GetIsHeadless(view))
{
var packager = new VisualElementPackager(_renderer, view);
if (_childPackagers == null)
{
_childPackagers = new Dictionary <BindableObject, VisualElementPackager>();
}
view.IsPlatformEnabled = true;
packager.Load();
_childPackagers[view] = packager;
}
else
{
if (_childViews == null)
{
_childViews = new List <IVisualElementRenderer>();
}
IVisualElementRenderer renderer = oldRenderer;
if (pool != null)
{
renderer = pool.GetFreeRenderer(view);
}
if (renderer == null || (renderer.View?.Handle ?? IntPtr.Zero) == IntPtr.Zero)
{
Performance.Start(reference, "New renderer");
renderer = Platform.CreateRenderer(view, _renderer.View.Context);
Performance.Stop(reference, "New renderer");
}
if (renderer == oldRenderer)
{
renderer.Element?.ClearValue(Platform.RendererProperty);
renderer.SetElement(view);
}
Performance.Start(reference, "Set renderer");
Platform.SetRenderer(view, renderer);
Performance.Stop(reference, "Set renderer");
Performance.Start(reference, "Add view");
if (!sameChildren)
{
(_renderer.View as ViewGroup)?.AddView(renderer.View);
_childViews.Add(renderer);
}
Performance.Stop(reference, "Add view");
}
Performance.Stop(reference);
}
protected void SetPackager(VisualElementPackager packager)
{
_packager = packager;
packager.Load();
}