//public int GetNextCursorTopPosition(NavigationDirectionEnum direction)
//{
// var cursorTopPosition = GetNextCursorTopPosition(direction);
// _itemSelector.SelectItemAtPosition(cursorTopPosition);
// _itemPositionManager.MoveCursorToTopPosition(cursorTopPosition);
//}
public int GetNextCursorTopPosition(NavigationDirectionEnum direction)
{
int cursorTopPosition = _itemPositionManager.GetCurrentCursorTopPosition();
int firstItemTopPosition = _itemPositionManager.GetFirstItemTopPosition();
int lastItemTopPosition = _itemPositionManager.GetLastItemTopPosition();
switch (direction)
{
case NavigationDirectionEnum.Previous:
if (cursorTopPosition - 1 >= firstItemTopPosition)
{
cursorTopPosition -= 1;
}
break;
case NavigationDirectionEnum.Next:
if (cursorTopPosition + 1 <= lastItemTopPosition)
{
cursorTopPosition += 1;
}
break;
case NavigationDirectionEnum.First:
cursorTopPosition = firstItemTopPosition;
break;
case NavigationDirectionEnum.Last:
cursorTopPosition = lastItemTopPosition;
break;
}
return(cursorTopPosition);
}
private void OnNavigate(NavigationDirectionEnum direction)
{
if (Navigate != null)
{
Navigate(this, new NavigationArgs(direction));
}
}
public NavigationArgs(NavigationDirectionEnum direction)
{
Direction = direction;
}
