Enhance folding support in JSON editor thru UI hints

[wohali]

This was raised recently on the users@ mailing list. Quoting:

Settings for code folding—it’d be nice (for us) to have the JSON documents folded by default. Even better would be the ability to set a preference as to how many levels should be unfolded by default, and saved in the browser’s local storage or something. That would help us a lot in navigating deeply nested JSON documents where the top levels usually have all the data we need when debugging.

Looks like Ace supports code folding already, so that's a plus.

[dahjelle]

To be clear, code folding is already working in Fauxton…but it is a pain, for big documents, to go through and manually fold everything when one could be try to quickly scan many deeply-nested documents. Even a keyboard shortcut or button to fold everything would be a great start.

[popojargo]

What do you think about double-clicking the folding button to apply nested folding?

[dahjelle]

What do you think about double-clicking the folding button to apply nested folding?

That's definitely be a nice start and an improvement on what is there now!

With our particular data structure, we really want everything below, say, level 2 folded, and everything above that unfolded—but I know if that is a common-enough situation to try write code for.

The double-clicking would definitely be an improvement for us!

[Antonio-Maranhao]

@dahjelle @popojargo ACE has some keyboard shortcuts for folding (https://github.com/ajaxorg/ace/wiki/Default-Keyboard-Shortcuts#folding) and they worked for me on Fauxton - e.g. you can fold/unfold all.

[dahjelle]

@Antonio-Maranhao Oh, fantastic! That should get documented somewhere. :-D

It's not quite as nice as having the fold level set to what what we want every time, but I think it is workable. Thank you!

[wohali]

I've edited the subject to match - @popojargo that sounds interesting.