// needs this in gobjecttypes.d
public typedef extern(C) void  function () GCallback;


// what we want to do..

// adding as signal does:
// a) binds our generic callback for that type of callback..
// b) stores the specific callback somewhere. with details of scope and function.


// then when we callback..
// loop through the registered callbacks, and call them with the args.


class Listeners {
	Dobject funcs[];
	CallContext* ccs[];
	Dobject owner;
	this(Dobject owner) {
		this.owner = owner;
	}
	void add(Dobject func, CallContext* cc) {
		this.funcs ~= func;
		this.ccs ~= cc;
	}
	
	bool Call(Value[] arglist) {
		Value ret;
		foreach(i,f;funcs) {
			f.Call(ccs[i], owner, &ret, arglist);
			if (ret.toBoolean() == true) {
				return true;
			}
		}
	}
	
}

 
	Listeners[char[]] connectedSignals;

	
	
	void registerSignal(char[] signal) {
		GCallback cb = null;
		if (signal in connectedSignals) {
			return;
		}
		switch(signal) {
			case "delete-event":
				cb = cast(GCallback)&callBackDelete;
				break;
			default:
				// except for top level, that should throw an excpetion...
				super.registerSignal(char[]);
				
		}
		
		g_signal_connect_data(
					getStruct(), // which returns void anyway..
					std.string.toStringz(signal), 
					cb, 
					cast(void*)this, 
					null, 
					cast(ConnectFlags)0);
		connectedSignals[signal] = new Listener(this);
		
	}
 
	 
	
	
	static void* on( Dobject pthis, CallContext* cc, Dobject othis, Value* ret, Value[] arglist) 
	{
		(cast(dsWrapped_GtkWindow)othis).registerSignals(arglist[0].toString());
		cast(dsWrapped_GtkWindow)othis).connectedSignals[arglist[0].toString()].add(arglist[1].toObject(), cc);
		return null;

	} 
	extern(C) static void callBackDelete(GtkWidget* widgetStruct, GdkEvent* event, Dobject dobj)
	{
		//bit consumed = false;
		
		
		Value[] arglist = new Value[1];
		//arglist[0] = new dsEvent(event);
		arglist[0].putVobject(dobj); // not needed really!!!.?
		Value ret;
			
		return (cast(dsWrapped_GtkWindow)dobj).connectedSignals["delete-event"].Call(arglist);

		//return consumed;
	}