Le 12/10/2011 15:38, David Bruant a écrit : > (...) > > _Future work_ > 1) see how to deal with inherited events So, I've been working on that. Updated code at https://github.com/DavidBruant/HarmonyProxyLab/tree/master/EventedObject (index2.html for test case).
Interestingly, in order to be able to implement inheritance, I used the receiver argument of the get trap. I know that it was very close to being removed completely [1], and that Firefox is incorrectly (according to the ES5 definition of [[Get]]) calling the get trap on the prototype but I'd like to argue to keep the receiver argument (exact traps to be defined though). As can be seen in my get trap, I use the 'receiver' argument for binding the event. I actually do not see any other way to implement it. I don't see a way for the event to know what to bind to when firing if the receiver isn't passed to a trap of the event when this one is on the prototype of the receiver. I'm not sure which trap should have this argument. I have showed one use case, but maybe others would need the receiver with the getPropertyDescriptor trap call recursively? To all traps related to inheritance? David [1] http://wiki.ecmascript.org/doku.php?id=strawman:proxy_drop_receiver _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
