Completes work starting in D2313 / a33fd55e81:
- Make C++ mistakes where values can be changed without messages being
sent easier to notice / harder to do.
- Make the IGUISetting interface more flexible, allowing custom settings
implementing their own logic. This is used to clean up hotkey code
introduced in 33af6da5e1.
Side effects:
- FromJSVal_Vector clears the vector being passed in. I have some vague
memory of not doing that in D24 / 2bae30c454 as an optimisation, but it
seems more like a footgun to me.
- Most usage of SetSettingFromString is replaced by direct method calls,
as we can generally cast to the proper GUI object type. Where we can't,
it is kept as a poor's man virtual dispatch.
- It moves a few member variables elsewhere, e.g. TextOwner now gets its
own member variable settings.
Differential Revision: https://code.wildfiregames.com/D3892
This was SVN commit r25392.
8b08f4ae7a