internal _MenuItem(
Key key = null,
ValueChanged <Size> onLayout = null,
DropdownMenuItem <T> item = null
) : base(key: key, child: item)
{
D.assert(onLayout != null);
this.onLayout = onLayout;
this.item = item;
}
void _handleOnTap()
{
DropdownMenuItem <T> dropdownMenuItem = widget.route.items[widget.itemIndex ?? 0].item;
if (dropdownMenuItem.onTap != null)
{
dropdownMenuItem.onTap();
}
Navigator.pop(
context,
new _DropdownRouteResult <T>(dropdownMenuItem.value)
);
}