A newcome theia devotee,There is a need makes me have any clue…
Appeal for help, many thanks in advance. 
My target view effects like pic bellow:

This may learn from the demo => tree-editor, but need to make some change.
And then, what plugin or api is suitable for this. Reference examples are limited.
@RogueSword thank you for the discussion!
At the moment the question is quite big, is there a specific part you’re stuck on in your implementation, what have you tried/achieved?
It’s really up to you on how you want to achieve your functionality, you can create a layout that has two views (one being your table and the other being an editor). But if you want to create a single view that has a table + draggable separator + editor then you’d need some custom logic for that, and can possible make use of an existing library that facilitates a lot of that for you.
I seem to have seen a similar question before, perhaps the following link can help you
phosphorjs
monaco-editor
1 Like
ok, i need to search more info to achivie my goal. tks a lot.
Good job, cool guy!
It seems to be what I want, let me have a look.Many tks for u.