Change window focus with a keyboard

[barlik]

There's an option to click into the Input JSON window or JMESPath Result window with a mouse so you can then scroll inside them. However, I cannot find a way to select the windows with a keyboard.
Also, the scrolling inside the windows only works with the arrow keys so it's weird that you cannot select the windows without the mouse.

[weibeld]

This feature would be extremely useful. There could be something simple like Tab for cycling between the panels/windows:

[Tab] > Expression [Tab] > Input [Tab] > Result [Tab] ...

Then for navigating in the input and result windows, there should be keyboard shortcuts, preferably the same ones used by the pagers less or more:

• j: down one line
• k: up one line
• Ctrl-F: down one page
• Ctrl-B: up one page
• Ctrl-D: down half a page
• Ctrl-U: up half a page
• g: go to beginning of document
• G: go to end of document

Also, search functionality would be useful:

• /: search forward
• ?: search backward
• n: go to next search match
• N: go to previous search match

The expression line should also accept a richer set of line editing commands. For example, similar ones as used in a typical Bash command line:

• Ctrl-A: go to beginning of line
• Ctrl-E: go to end of line
• Ctrl-U: delete from cursor to beginning of line
• Ctrl-K: delete from cursor to end of line
• Ctrl-W: delete one word to the left of cursor
• Alt-B: move cursor one word backward
• Alt-F: move cursor one word forward
• Alt-D: delete word to the right of cursor
• Alt-Del: delete word to the left of cursor

Alternatively, there could also be a Vim mode for editing the expression line with Vim commands.