How to leave extension UI open in Chrome Extension when focus is lost?

Question

JavaScript

Extension UI - popup with multiple inputs. Each input is filled after clicking on the page.
When clicked, the extension UI loses focus and closes.
Google suggests 2 solutions:
- use infobar (not sure what suits me)
- use localStorage (before closing the UI, save - StorageArea.set (object items), when opening unload by keys (keys - field names in the form) - StorageArea.get (string or array of string or object keys)).
Are there any other ways to bypass the closure? Set the vector of thoughts please.

Answer 1

Popup is not designed for this.
Use content_script and draw custom controls on the page.