Widget that combine a search and a tree

[tfrancart]

When we are facing a hierarchical set of values, we need to have the ability to both search like an autocomplete field, or browse the hierarchy.
We need a combination of the AutocompleteWidget and the TreeWidget.

Some do that:

Searching:

Browsing:

When values are selected:

Then we add more values we see which one are already selected

That's very nice. We could be more simple and:

• just provide an autocomplete field + a tree
• in the autocomplete, we could display a bit of hierarchical information if we can
• then we would have to see how this behaves in the criteria line

I would like this to be the default widget when we detect that target entities both have a label property annotated and a hierarchical property annotated.