The JS-side counterparts of C++ objects are now Proxy objects, in
anticipation of SM60 changes that remove the get/set hooks entirely.
This makes semantic sense too as they are essentially phantom wrappers
around the C++ objects, with no proper JS representation.
By using different proxy handlers for different GUI object types, we can
further fix issues encountered in D2136 by defining the relevant
functions only on objects that should have them.
The main complexity with proxy handlers is that Spidermonkey assumes in
several places that they are static and data-less, so they cannot be
used directly to hold data. This diff works around that issue by storing
per-script-interface data in the CGui directly.
Further API changes in SM60 make this slightly cleaner.
Comments by: Itms
Refs #5859
Differential Revision: https://code.wildfiregames.com/D2768
This was SVN commit r24229.
7c04ea0211