[Feature Request] Use a keyboard shortcut to trigger a window with content by html

Context

• This issue is not a bug report. (please use a different template for reporting a bug)
• This issue is not a duplicate of an existing issue. (please use the search to find existing issues)

Description

I would like to add a feature in my editor: users select a text, and click on a keyboard shortcut, then a window with content by html (eg, a table like this) appears next to the selection, in the end users move the mouse or use another keyboard shortcut to make the window disappear.

I understand that we could use addDynamicKeybinding or like here to add a keyboard shortcut.

But for the window, it seems that we have only diagnostic window that support html, right? If so, the only use case I know about diagnostic window is by hoverprovider like here, where we need to hover on a text to make the diagnostic window appear.

Does anyone know how to use a keyboard shortcut to trigger a diagnostic window (whose content is related to the selection)?

[rcjsuen]

But for the window, it seems that we have only diagnostic window that support html, right? If so, the only use case I know about diagnostic window is by hoverprovider like here, where we need to hover on a text to make the diagnostic window appear.

You can get the hover to appear with <kbd>Cmd + K, Cmd + I</kbd> on macOS. Not sure what the keybindings are on Windows and Linux but you can figure it out by searching for it with <kbd>F1</kbd>.

[chengtie]

How would you design and implement these features?

I don’t think what you’re describing is easily achievable with the APIs. I imagine you’d have to create a new command that pops up a window yourself.

Ah, that’s not good news. To create a shortcut that pops up a window that supports html, are there any samples or references to follow?