Hi Eddy. This seems like a bug to me. Would you be willing to file it at bugs.webkit.org?
I have a guess at a possible work-around. In the class where you've implemented valueForUndefinedKey:, try also implementing invokeUndefinedMethodFromWebScript:withArguments:. Thanks, Geoff On Nov 17, 2009, at 7:37 AM, Eddy Bruël wrote: > 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 > > > > > > > > > > _______________________________________________ > webkit-dev mailing list > [email protected] > http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
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