Auto-scroll content with selected item

Question

I have a dropdown menu, which is working fine using a mouse or touch:

But, I would like to also allow the keyboard or joystick to control it.

I can select the dropdown items and navigate, you can notice the fourth item is selected ("Atlantis" in red).

But, if I go down to the next item bellow it--using only keyboard for example--the content doesn't scroll down automatically.

How can I do that?

Answer 1

Well, I solve this way

if (Input.blablablagetbuttondown)
{
    TemplateViewPortContentRectTransform.anchoredPosition += new Vector2(0,
    TemplateViewPortContentItemRectTransform.sizeDelta.y);
}

With some name changes to explain better what are the objetcs... And equivalent code to go up.