static public bool cliAddEventHandler(PlTerm clazzOrInstance, PlTerm memberSpec, PlTerm prologPred)
{
object getInstance;
Type c;
if (!GetInstanceAndType(clazzOrInstance, out getInstance, out c)) return false;
Type[] paramz = null;
if (!CheckBound(memberSpec, prologPred)) return false;
EventInfo fi = findEventInfo(memberSpec, c, ref paramz, BindingFlagsALL);
if (fi == null)
{
return Error("Cant find event {0} on {1}", memberSpec, c);
}
var Key = new EventHandlerInPrologKey
{
Name = PredicateName(prologPred),
Module = PredicateModule(prologPred),
Arity = PredicateArity(prologPred),
Origin = getInstance,
Event = fi
};
lock (PrologEventHandlers)
{
EventHandlerInProlog handlerInProlog;
if (PrologEventHandlers.TryGetValue(Key, out handlerInProlog))
{
fi.RemoveEventHandler(getInstance, handlerInProlog.Delegate);
PrologEventHandlers.Remove(Key);
}
handlerInProlog = new EventHandlerInProlog(Key);
PrologEventHandlers.Add(Key, handlerInProlog);
fi.AddEventHandler(getInstance, handlerInProlog.Delegate);
}
return true;
}
static public bool cliAddEventHandler(PlTerm clazzOrInstance, PlTerm memberSpec, PlTerm prologPred)
{
object getInstance;
Type c;
if (!GetInstanceAndType(clazzOrInstance, out getInstance, out c))
{
return(false);
}
Type[] paramz = null;
if (!CheckBound(memberSpec, prologPred))
{
return(false);
}
EventInfo fi = findEventInfo(memberSpec, c, ref paramz, BindingFlagsALL);
if (fi == null)
{
return(Error("Cant find event {0} on {1}", memberSpec, c));
}
var Key = new EventHandlerInPrologKey
{
Name = PredicateName(prologPred),
Module = PredicateModule(prologPred),
Arity = PredicateArity(prologPred),
Origin = getInstance,
Event = fi
};
lock (PrologEventHandlers)
{
EventHandlerInProlog handlerInProlog;
if (PrologEventHandlers.TryGetValue(Key, out handlerInProlog))
{
fi.RemoveEventHandler(getInstance, handlerInProlog.Delegate);
PrologEventHandlers.Remove(Key);
}
handlerInProlog = new EventHandlerInProlog(Key);
PrologEventHandlers.Add(Key, handlerInProlog);
fi.AddEventHandler(getInstance, handlerInProlog.Delegate);
}
return(true);
}