build eventlistenerlist targetlisten contain children compon need regist regist implicitli implement target listen param contain contain search targetlisten event listen list target listen contain children event listen list collect target listen contain contain compon compon contain compon event listen list list event listen list compon length compon target listen list add target listen target listen compon compon targett model view list add target listen targett model view compon targett model compon contain event listen list list collect target listen contain compon object object list listen list object length list add target listen target listen object contain prop panel presum contain equal prop panel target listen action collect target listen action list add target listen action list 