public static T?FindFirstChild <T>(this UIElement view, Func <T, bool>?selector, int?childLevelLimit = null, bool includeCurrent = true)
where T : UIElement
{
Func <UIElement, bool> childSelector;
if (selector == null)
{
childSelector = child => child is T;
}
else
{
childSelector = child => child is T t && selector(t);
}
if (includeCurrent && childSelector(view))
{
return(view as T);
}
var maxDepth = childLevelLimit ?? int.MaxValue;
return((T)view.EnumerateAllChildren(childSelector, maxDepth).FirstOrDefault());
}
