public void NextElement <TType>(out TType widget) where TType : VisualElement, IOnGUIHandler, new()
{
Type typeFromHandle = typeof(TType);
widget = (TType)((object)null);
if (this.m_CurrentViewState.childIndex >= this.m_CurrentContainer.childrenCount)
{
TType arg_51_1;
if ((arg_51_1 = this.m_ElementPool.TryReuse <TType>()) == null)
{
arg_51_1 = Activator.CreateInstance <TType>();
}
widget = arg_51_1;
this.m_CurrentContainer.AddChild(widget);
}
else
{
VisualElement childAt = this.m_CurrentContainer.GetChildAt(this.m_CurrentViewState.childIndex);
if (childAt.GetType() == typeFromHandle)
{
widget = (childAt as TType);
}
else
{
IOnGUIHandler onGUIHandler = childAt as IOnGUIHandler;
if (onGUIHandler != null && onGUIHandler.id == 0 && !(onGUIHandler is VisualContainer))
{
this.m_CurrentContainer.RemoveChildAt(this.m_CurrentViewState.childIndex);
this.m_ElementPool.Trash(onGUIHandler);
this.NextElement <TType>(out widget);
return;
}
TType arg_11E_1;
if ((arg_11E_1 = this.m_ElementPool.TryReuse <TType>()) == null)
{
arg_11E_1 = Activator.CreateInstance <TType>();
}
widget = arg_11E_1;
this.m_CurrentContainer.InsertChild(this.m_CurrentViewState.childIndex, widget);
}
}
Debug.Assert(widget != null);
this.m_CurrentViewState = new VisualTreeBuilder.ViewState(this.m_CurrentViewState.childIndex + 1);
}
private void RecycleDescendants(VisualContainer parent, int startAtIndex)
{
while (parent.childrenCount > startAtIndex)
{
VisualElement childAt = parent.GetChildAt(startAtIndex);
VisualContainer visualContainer = childAt as VisualContainer;
if (visualContainer != null)
{
this.RecycleDescendants(visualContainer, 0);
}
IOnGUIHandler onGUIHandler = childAt as IOnGUIHandler;
if (onGUIHandler != null)
{
this.m_ElementPool.Trash(onGUIHandler);
parent.RemoveChild(childAt);
}
else
{
startAtIndex++;
}
}
}
