Frame Templates

[Jinxit]

Thanks for this amazing extension, it makes addon development so much easier.

Is there some way to handle the typing of Frame templates such as BackdropTemplate that I'm missing, or is that currently not supported?

[Ketho]

I have no idea how this would be implemented in EmmyLua or if it's even possible. Not to mention it can accept multiple, comma-delimited templates. But it's indeed an inconvenience templates are not supported at all by this extension.

[Jinxit]

Thanks for taking a look! I don't see this as a high priority feature or anything, I was mostly just wondering if I missed something obvious.

You're right, it seems like EmmyLua can't pick the correct overload return value based on string literals:

So I guess the only option would be to export the templates as types that can be used manually with @type assignments, or having CreateFrame return multiple types as above, or both at the same time.

[ChrisKader]

I have been messing with this a bit this weekend.

Basically the template param is used to look up an alias for known template types. Then the value returned is a merged version of the frame type specified and template type specified (if found.). Below shows what would happen if the template type is not found.

[ChrisKader]

I am currently working on a parser parse all XML files from the default UI.

Currently it will:

• Determine what fields the frame template has and also what templets/mixins it may be inheriting
• This includes any Frames, Scripts, Layers, Key Values, along with the defaults set by things like Size, Color, Anchors, ect.
• Create the proper types that will also inherit other types/mixins as needed.

All thats left really is generating the LUA files.

[Ketho]

I can confirm this works, thank you for finding this solution.

There is indeed still the problem of comma-separated templates and having to parse XML to convert templates to EmmyLua but it's something 😃

[ChrisKader]

I am unsure what you mean by comma-separated templates.

[Ketho]

For example

CreateFrame("Frame", nil, nil, "VerticalLayoutFrame, TooltipBackdropTemplate")

But those don't appear to be used in FrameXML and I suppose for only very few addon authors. So it's a moot point, never mind 😅

[ChrisKader]

Do you have a prefered format? I have gotten through most of the parsing and just need to clean a few things up.

[ChrisKader]

So I have built the lua files for EmmyLUA to use. After breaking them up into 100kb files, there are 11.

I can submit a PR with the code for parsing the XML if needed.

[Ketho]

I don't really have a preferred format but it's neat that you first parsed the templates to Lua before converting it to EmmyLua. I'd like to have the code (Lua/Python?) for parsing the XML otherwise I'll have to write my own one. But this is looking nice 👍