public bool MoveFirst()
{
var moved = false;
Array.Clear(_movedKeysFlags, 0, _movedKeysFlags.Length);
_movedKeys.Clear();
for (int i = 0; i < _cursors.Length; i++)
{
var c = _cursors[i];
var movedX = c.MoveFirst();
if (movedX)
{
_movedKeysFlags[i] = true;
_movedKeys.Add(new KeyValuePair <TKey, int>(c.CurrentKey, i));
}
moved = moved || movedX;
}
if (moved)
{
CurrentKey = _movedKeys.First.Key;
// keep navigating state unchanged
if (moved && State == CursorState.Initialized)
{
State = CursorState.Moving;
}
State = CursorState.Moving;
return(true);
}
return(false);
}