CodeMirror Element

[frankvp11]

This is the PR that we discussed in #2760. Currently there are a few issues which I list below:

1. Sometimes it doesn't properly load all the resources, leading to the element not working properly - this can also be seen in the console, as it says CodeMirror is not defined
2. It currently does not yet support various things like
   -Folding functions
   -Autocomplete
   and various other features that are supported.

Any help in making this work would be much appreciated.
One thing to note is that despite the fact that it logs that you are trying to fold it (when you do ctrl + ',' on the spot) it can't seem to figure out how to collapse it. The way that I am getting inspiration for this is from here https://codemirror.net/5/demo/folding.html. I realize that this is version 5, but I couldn't seem to figure anything else out that was semi-clear.

[falkoschindler]

Thanks, @frankvp11! I just fixed a few minor things, but it already looks quite nice. 🙂

[frankvp11]

I agree. I have yet to figure out how to get the other features working, as unfortunately there aren't many good examples of how you could integrate them in version 6.
I've also taken the liberty to start working on an Monaco integration aswell. While this one is more limited in terms of future features, it is ultimately easier to implement things.
Some of the differences in my the two elements (Monaco and CodeMirror) is as follows:

1. CodeMirror has the ability (potentially) to support collaborative editing.
2. Monaco has minimaps
3. While possible in CodeMirror, code folding comes out of the box with Monaco despite being difficult to implement (yet to do it) in CodeMirror.
4. Monaco has find and replace, and bracket/string matching "out of the box"

For the Monaco editor, please let me know if you want that in a seperate PR or if it can go in this PR aswell (as it pertains to code editors).

[falkoschindler]

I think it's better to create a separate PR for Monaco, because it is a separate feature after all and might get merged before or after the CodeMirror element (or not at all). Both elements can get pretty complex, so keeping the PRs reasonably small helps to focus the development and review process.

[chrschorn]

I would be interested in helping out here. Do we need/want all features supported by codemirror for a first version of this? I think even without e.g. folding this would be a really helpful component to have in NiceGUI as long as it is reliable (top comment says "Sometimes it doesn't properly load all the resources, leading to the element not working properly").

[rodja]

I agree with @chrschorn. A minimal working version should be the goal of this PR. We can add code folding, auto-completion etc in later additions.

[frankvp11]

I agree also. I think to solve the problem of the modules not loading properly, we should download the files similar to how we did in #2054 and then use the loadResource function. That should get rid of the issues that I was facing earlier where it would take a few refreshes for the issues to go away

[chrschorn]

@frankvp11 I could spend some time looking into this later this week. Let me know if that makes sense or if you're working on this right now.

[frankvp11]

That would be great thanks. I've got exams for the next 2 weeks so my development time has gone to zero 😅

[rodja]

I think we can close this in favour of #2913 which hopefully gets merged for the next release. What do you think @frankvp11?

[frankvp11]

I don't think you should have even bothered asking me 😅.
I think it's a great idea- I've been following the development there and it looks amazing.
What do you want to do with #2784, considering their similarity? Perhaps we can just archive it?

[chrschorn]

Thank you for getting this started btw @frankvp11!