public bool CanSelect()
{
Signal sig;
int el;
Track trk;
sig = Globals.findSignalNamed(signame);
if (sig == null)
{
return(false);
}
Vector path;
if (sig.controls == null)
{
return(false);
}
if (sig.IsClear())
{
return(false);
}
TurnSwitches();
path = Globals.findPath(sig.controls, sig.direction);
if (path == null)
{
RestoreSwitches();
return(false);
}
int nel = path._size;
bool failed = false;
// check that every element in the path is clear
for (el = 0; el < nel; ++el)
{
trk = path.TrackAt(el);
if (trk.fgcolor != Globals.conf.fgcolor)
{
failed = true;
break;
}
}
Globals.Vector_delete(path);
RestoreSwitches();
return(!failed);
}