Data List: Groups

[lindeberg]

It would be useful to be able to group the dropdown list items.

I am mostly thinking about when using a custom data source.

Describe the solution you'd like

I would like to have a settable 'Group'-property on the 'DataListItem'-class

[leekelleher]

@lindeberg Thank you for the suggestion. 💡

I'd considered an option for grouping data-items, but it started to add complexity to the other list-editors. Although, that was about a year ago, so I'm happy to give it some more thought.

[leekelleher]

Update on this, I've added a branch for my prototype for adding data-item grouping.
The branch is dev/wip/data-list-groups. Commit 34d1f68 has the significant code amends.

Initially the feature request may seem to be "add a Group property to the DataListItem class", but I would immediate be asked why the built-in list editors didn't support groupings, so I believe it's all part and parcel of the feature. A holistic feature, so to speak. 😃

From my prototyping, both Dropdown List and Radio Button List look fine, I'm less happy with Checkbox List (most likely needs more TLC), and I hadn't looked at how it would work with the Item Picker editor.

While this feature is not high on my current priorities, I am still interested in (or others) exploring this in future. This branch should provide a good foundation.

[leekelleher]

Linking for prosperity... Ulrich Ebsen's example of his custom button list, grouped with headings.
https://twitter.com/ecoredk/status/1331513128618745856

[leekelleher]

Moved this topic to a discussion. I'm growing fonder about the grouping idea. I'll use this thread for idea discussion, brainstorming, etc.