Hi everybody, I am in the process of writing some code in ObjC, which would allow me to make calls from Javascript to C++ objects implementing a simple reflection interface (it basically allows you to associated indices with names, and perform operations such as getting/setting/calling on these indices).
In order to do this, I created a simple ObjC wrapper object around the C++ interface, which implements the WebScripting protocol. However, since this wrapper object does not have any member variables (they are all hidden behind the C++ interface), I cannot expose these to Javascript directly. Instead, I've tried to make them available using KVC, specifically by using the methods valueForUndefinedKey: and setValue:forUndefinedKey:. For isKeyExcludedFromWebScript: and isSelectorExcludedFromWebScript: I simply always return YES. Setting properties like this seems to work fine. The method get called, and I simply forward it to the reflection interface. Getting properties, on the other hand, does not seem to work: valueForUndefinedKey: simply does not get called. At all. I found an entry on the Apple mailing lists of somebody seemingly having the same problem as me. Unfortunately, there was no answer: http://lists.apple.com/archives/webkitsdk-dev/2008/Oct/msg00021.html Am I overlooking something? Are there any other methods I need to override in order for this to work? Or is it simply a bug in WebKit, since this approach to exposing properties seems to be non-standard, at least. Any feedback on this issue would be very much appreciated! :-) Cheers, Eddy
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