Matthias, Thanks for your response. I was able to figure it out by cobbling together other samples that I found. It seems where you want to use a constructor you use a FunctionTemplate to define the constructor. That in turns has a prototypeTemplate which is an ObjectTemplate. >From there I was able to set up the bridge between the C++ class and Javascript.
On Jul 8, 7:57 pm, Matthias Ernst <[email protected]> wrote: > In short: > > ObjectTemplate gives you JS objects without a dedicated constructor > function and prototype. They use Object[.prototype]. Since you can > still attach property handlers, they can be useful. FunctionTemplates > give you the additional benefit that they provide a constructor > function for use from JS code and JS code can add methods to the > prototype. > > To study a working example that shows what you need to do for your > case, including JS->native reference management, check out > > http://github.com/ry/node/blob/master/src/node_object_wrap.hhttp://github.com/ry/node/blob/master/src/node_buffer.{h,cc} > > Matthias > > On Wed, Jul 7, 2010 at 9:52 PM, christy <[email protected]> wrote: > > I'm confused how to use these two template. I've looked at two > > examples where there seems to be contradictory information. I want to > > create to expose an object from C++ to Javascript but the user should > > be able in Javascript to construct the object and to extend the object > > in Javascript. > > > In one example the guidance is to use two FunctionTemplates: one to > > represent the object and the other to represent the constructor. In > > another example the ObjectTemplate::SetCallAsFunctionHandler method is > > used to handle object construction. However the PrototypeTemplate is > > a member of the FuncitonTemplate. It would seem to me that > > ObjectTemplate should be a derive class of FunctionTemplate but I'm > > really confused as which one should be used to expose C++ object to > > Javascript. > > > Can someone provide some guidance and provide an example. Also if you > > use a code snippet please explain the object construction. I've seen > > snippet where variable are introduced without any prior reference and > > that severely confused me since I couldn't see how the variable was > > constructed. > > > Thanks in advance > > christy > > > -- > > v8-users mailing list > > [email protected] > >http://groups.google.com/group/v8-users -- v8-users mailing list [email protected] http://groups.google.com/group/v8-users
