Sitemap editor: Add Buttongrid Button support

[mherwege]

Refs openhab/openhab-core#4377.

The most recent addition to the sitemap syntax allows defining buttons nested as components inside the Buttongrid component.

[mherwege]

Probably better to first finish #2720 first and then rebase on that. The impact starts to be pretty big.

[relativeci]

#2339 Bundle Size — 10.84MiB (+0.06%).

011bec8(current) vs 2975d78 main#2338(baseline)

Warning

Bundle contains 2 duplicate packages – View duplicate packages

Bundle metrics   2 changes 1 regression

	Current #2339	Baseline #2338
Initial JS	1.89MiB(+0.02%)	1.89MiB
Initial CSS	576.8KiB	576.8KiB
Cache Invalidation	22.9%	22.78%
Chunks	226	226
Assets	249	249
Modules	2918	2918
Duplicate Modules	149	149
Duplicate Code	1.8%	1.8%
Packages	96	96
Duplicate Packages	2	2

Bundle size by type   1 change 1 regression

	Current #2339	Baseline #2338
JS	9.05MiB (+0.07%)	9.04MiB
CSS	863.56KiB	863.56KiB
Fonts	526.1KiB	526.1KiB
Media	295.6KiB	295.6KiB
IMG	140.74KiB	140.74KiB
HTML	1.38KiB	1.38KiB
Other	871B	871B

Bundle analysis report Branch mherwege:buttongrid_button Project dashboard

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[mherwege]

Dependency openhab/openhab-core#4377 Is now merged.

[lolodomo]

Dependency openhab/openhab-core#4377 Is now merged.

I just triggered a rebuild of your PR.

[florian-h05]

I wanted to give this a try by creating a new (hence empty) sitemap, but I cannot save that empty sitemap.
If I add a widget to it, I can save it.

@mherwege Can you please have a look?

[mherwege]

I wanted to give this a try by creating a new (hence empty) sitemap, but I cannot save that empty sitemap.

It looks like that bug was there before this PR. It should be fixed now.

[florian-h05]

I though it was a regression from this PR, anyway thanks for the fix!
And please do NOT force push during review!! It normally does not matter if a PR is not in sync with main.

[mherwege]

And please do NOT force push during review!! It normally does not matter if a PR is not in sync with main.

Sorry for that. I normally don’t, but I made the mistake a few weeks ago to merge main into the branch from the web, and I couldn’t get it to push anymore without a rebase and force push.

[florian-h05]

LGTM, thanks!