Combine available and selected machine strings.

[Caleb-Ellis]

Done

• Exploration related to https://github.com/canonical-web-and-design/MAAS-squad/issues/1891 and https://github.com/canonical-web-and-design/MAAS-squad/issues/1894
• Changed machines count to read:
  • None selected: "Y machines available"
  • Some selected: "X of Y machines selected" - this is a link that filters to selected when clicked
  • All selected: "All machines selected"

QA

• See that the text next to machines reads "Y machines available"
• Select some machines and check that the text is now a "button" link that reads "X of Y machines selected"
• Click the button and check the machine list is filtered to selected machines
• Remove filter, select all machines and check that the text reads "All machines selected"

Fixes canonical-web-and-design/MAAS-squad#1891
Fixes canonical-web-and-design/MAAS-squad#1894

Screenshots

None

Some

Filtered

All

[lilyvidenova]

I reaaally like this! Only one little thing - when I deselect the all checkbox in the header, the list is empty because we're still searching for in:selected

Can we clear the filter when you deselect the checkbox? Other than that +1 from me!

[lilyvidenova]

@lyubomir-popov wanna take a look?

[lyubomir-popov]

@lilyvidenova sure

[lyubomir-popov]

@Caleb-Ellis Does clicking on the link in the header filter to only show the selected ones? That would be really handy. If it does, maybe just the number 13 should be a link?

Well done! +1

[lilyvidenova]

@lyubomir-popov yes, this all this branch does

[lyubomir-popov]

Yeah, should've checked the code before asking.
@lilyvidenova Do you think the whole thing should be clickable - or just eh 13 part?

[huwshimi]

I reaaally like this! Only one little thing - when I deselect the all checkbox in the header, the list is empty because we're still searching for in:selected

Can we clear the filter when you deselect the checkbox? Other than that +1 from me!

I fixed this in #1065 (this branch is a bit behind master).

[huwshimi]

Looks good, just a couple of lint errors to fix.