Is it possible to use prompt-toolkit to implement these modern CLI tools ??

Prompt-toolkit supports prompt ui and fullscreen ui. But there is another partial fullscreen ui, I don't know how to implement it with prompt-toolkit.

FZF:

When I input:

cd `find . -type d | fzf --height 30% --reverse`

fzf will use stderr to render it's ui and write the result to stdout:

As you see, with --height 30% parameter, fzf will not occupy the fullscreen and will resue only a region of current screen to display it's ui widget. When I press enter and accept a path. fzf will clear the region it used, and restore the cursor position for me:

Then cd command get the output from fzf and take it as an argument.

Deer

Deer is a ranger like zsh plugin, it can be used as a file picker:

When I input cd <alt+k>, deer will display it's widgets under current line:

After picking a path, deer will close (clear it's ui) and restore cursor position and paste it's result:

Question

Both fzf and deer are widely used command line tools today, they are not traditional prompt program and still not traditional fullscreen application.

I really want to know is it possible to use prompt_toolkit to implement sth like fzf or deer ??

Start by reviewing prompt-toolkit's existing prompt UI and fullscreen UI capabilities, then compare them with the fzf and deer behaviors described here. Determine whether partial-screen rendering, stderr/stdout interaction, clearing the used region, cursor restoration, and result insertion are supported; completion would require a documented implementation path or a clearly scoped feature.