Cura: [4.8 beta] Activate button isn't disabled for active machine profile

[printingotb]

Application version
4.8 beta

Platform
Windows 7, NVIDIA GeForce GT 730. (Using dual monitors).

Printer
Custom FFF or Creality cr10

Reproduction steps
Activate a printer profile

Screenshot(s)
Machine profiles menu:

The settings profile menu greys out the button:

Actual results
Button stays active

Expected results
Button should be disabled for the active machine.

Project file
button.zip

[nallath]

Whoops. This has been blatantly wrong for over 4 years...

[fieldOfView]

... nervously checks git blame ...

Wasn't me!

[printingotb]

While I'm at it, I found some inconsistencies that may or may not be intended :wink:

Add machine - it activates but doesn't automatically get selected

Create settings profile from overrides - activates and selects profile
Duplicate profile - doesn't activate or select

Create material - activates and selects
Duplicate material - activates and selects

Active machine can be removed and the next machine in the list activates. (Until now at least).
Active settings profile can't be removed
Active material can't be removed

[nallath]

Active machine can be removed and the next machine in the list activates. (Until now at least).
Active settings profile can't be removed
Active material can't be removed

This is intentional.

[Ghostkeeper]

The inconsistency is necessary because while it's pretty clear what happens when you delete the active printer, a material or custom quality profile may be active on any number of printers, even ones that are not active right now. So deleting your custom material would also need to change the material on different printers. You wouldn't notice that this happens.