internal void SetSelectionOnItem(AdvancedDropdownItem item, int selectedIndex)
{
AdvancedDropdownItemState state = GetStateForItem(item);
if (selectedIndex < 0)
{
state.selectedIndex = 0;
}
else if (selectedIndex >= item.Children.Count())
{
state.selectedIndex = item.Children.Count() - 1;
}
else
{
state.selectedIndex = selectedIndex;
}
}
private AdvancedDropdownItemState GetStateForItem(AdvancedDropdownItem item)
{
if (m_LastSelectedState != null && m_LastSelectedState.itemId == item.id)
{
return(m_LastSelectedState);
}
for (int i = 0; i < states.Length; i++)
{
if (states[i].itemId == item.id)
{
m_LastSelectedState = states[i];
return(m_LastSelectedState);
}
}
Array.Resize(ref states, states.Length + 1);
states[states.Length - 1] = new AdvancedDropdownItemState(item);
m_LastSelectedState = states[states.Length - 1];
return(states[states.Length - 1]);
}
internal void MoveUpSelection(AdvancedDropdownItem item)
{
AdvancedDropdownItemState state = GetStateForItem(item);
int selectedIndex = state.selectedIndex;
do
{
--selectedIndex;
}while
(selectedIndex >= 0 && item.Children.ElementAt(selectedIndex).IsSeparator());
if (selectedIndex < 0)
{
selectedIndex = item.Children.Count() - 1;
}
if (selectedIndex >= 0)
{
SetSelectionOnItem(item, selectedIndex);
}
}
