I have a channel-type defined like so <channel-type id="source-format"> <item-type>String</item-type> <label>Source</label> <description/> <state readOnly="true"> <options> <option value="02">480p</option> <option value="03">576p</option> <option value="04">720p50</option> …

It is some kind of value limiting and mapping. In Your case, a value of 02 will be shown in PaperUI as 480p.

value limiting and mapping This is what I am expecting, but this is not what I’m seeing. Where is it applied? I’ve traced the code all the way up to the OSGiEventPublisher.post() call, and I don’t see where any of it tries to do a transformation, aside from profiles in the CommunicationsManager. …

There are other UIs Example [image] [SOLVED] Switch rendering when mapping in Sitemap Items & Sitemaps Although this is purely aesthetic: Is it possible to have a mapping in a sitemap for a switch and render it in a classical way in the Basic UI, i.e. not wi…

Did not know that. It should still limit possible values.

I have seen ways to do this in items and with profiles. However, I am developing a binding, and I’m must develop a contract for my interface. As the developer of a binding, my job is to hide the physical implementation details behind my interface and provide users with a predictable contract. It wou…

The options are used with sitemaps. If you show an item on a sitemap it will display the option content and if you configure it as a Selection the ui will render it as a selection box. Its also possible to fill these options dynamically in the binding. For example for a list tv channels.

Options are also used in the new MainUi by openHAB 3.0. As you can see in the screenshop, only mode (Betriebsart) options defined in thing-type channels are seen and selectable. [image]

So, is it safe to say that raw values, as supplied by the binding, are carried throughout, at least with string type, and <options> provides a dictionary with which various elements in the system can get a translation? So rather than values being translated once as they enter or exit the binding, t…

That sounds about right. After all, the Item does not “belong” to the binding, the user may do with it what they wish - including linking to other bindings etc. stateDescription may be used to offer ‘suggestions’ like a menu, but should not otherwise constrain the Item. I haven’t figured out what…

Interaction with the binding will always be done trough the raw values. From your example in the first post, 02 will be the raw values, needed e.g. in rules, whereas 480p is what the UI presents to the user. You can also define this as parameters, used for translation into different languages. Furt…

What do the channel-type/state/options/option actually do?

Development Add-ons

rossko57 (Rossko57) October 8, 2020, 4:55pm 4

There are other UIs

Example