private void RunNavigation()
{
if (mSelectPrevious.Active)
{
int currentItemIndex = mMenuItems.IndexOf(SelectedItem);
int nextItemIndex = ((currentItemIndex - 1) % mMenuItems.Count() + mMenuItems.Count()) % mMenuItems.Count();
while (currentItemIndex != nextItemIndex && !(mMenuItems[nextItemIndex] is SelectableItem))
{
nextItemIndex = ((nextItemIndex - 1) % mMenuItems.Count() + mMenuItems.Count()) % mMenuItems.Count();
}
if (mMenuItems[nextItemIndex] is SelectableItem)
{
SelectedItem = (mMenuItems[nextItemIndex] as SelectableItem);
}
}
if (mSelectNext.Active)
{
int currentItemIndex = mMenuItems.IndexOf(SelectedItem);
int nextItemIndex = (currentItemIndex + 1) % mMenuItems.Count();
while (currentItemIndex != nextItemIndex && !(mMenuItems[nextItemIndex] is SelectableItem))
{
nextItemIndex = (nextItemIndex + 1) % mMenuItems.Count();
}
if (mMenuItems[nextItemIndex] is SelectableItem)
{
SelectedItem = (mMenuItems[nextItemIndex] as SelectableItem);
}
}
}
private void CommitChanges()
{
foreach (IMenuItem item in mUncommittedMenuItemAdditions)
{
if (SelectedItem == null && item is SelectableItem)
{
SelectedItem = item as SelectableItem;
}
item.Menu = this;
mMenuItems.Add(item);
}
foreach (IMenuItem item in mUncommittedMenuItemRemovals)
{
// TODO: Handle resetting the selection upon removal.
item.Menu = null;
mMenuItems.Remove(item);
}
mUncommittedMenuItemAdditions.Clear();
mUncommittedMenuItemRemovals.Clear();
}