Summary:
When detecting the properties of a window, now it shows and lets the user select the window complete class.
If this property is selected in the overlay, `Window class` takes the whole class value, and the option `Match window whole class` is set.
This adds back a feature the old kcm was offering.
BUG: 421542
FIXED-IN: 5.20
Test Plan:
- `Detect window properties` and pick a firefox window
- The property selector shows: `Window class: navigator` and `Whole window class: navigator firefox`
- Selecting the latter set the properties as per summary
{F8334118}
Reviewers: ngraham, #kwin, #plasma, meven
Reviewed By: ngraham, #kwin, #plasma, meven
Subscribers: broulik, davidedmundson, meven, anthonyfieroni, zzag, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D29791