Demo dynamic image URLs

[watou]

See eclipse-archived/smarthome#2412

Signed-off-by: John Cocula [email protected]

[ThomDietrich]

Funny URLs :) But do we really need all 8 of them in the demo file?
Also according to the referenced PR the url parameter serves as a fallback image. Didn't get clear from this example...

Now that you already experimented with this new feature, would you add another PR here? Otherwise I can have a look...
https://github.com/openhab/openhab-docs/blob/gh-pages/features/sitemap.md

[watou]

Thanks for your input. I've shortened the list a bit. I don't know a good way to make the default URL feature more prominent in the demo but would appreciate suggestions. I will definitely submit a PR to sitemap.md.

I think this is a good enhancement for sitemap-based UIs, but as we were discussing here, something in addition should be provided for non-sitemap-based UIs.

[kaikreuzer]

I am actually not sure whether we should add this feature to the demo files at all.
It is nothing I would want to promote as a feature that should be used - it is rather something for the ticks&tricks section how to solve certain situations, if nothing else helps...

But we should probably first finish the discussion on the implementation itself.

[kaikreuzer]

Ok, having had a closer look at the implementation in eclipse-archived/smarthome#2412, I merged it and I am also fine with adding this example to the demo files - will merge as soon as the next ESH stable is flowing to OH!