Perhaps my last answer was a little bit short (posted on the go), sorry for that
What I wanted to suggest. You can place a dropdonw widget as a field selector and type together with an input widget for the value and collect the outputs (perhaps in flow context). A button widget can then send a command to activate the filter function of tabulator:
Example:
The javascript code: table.setFilter("age", ">", 10);
translate to this message to be send to ui-table to activate the filter
{"payload":{
"command":"setFilter",
"arguments":[
"age",
">",
"10"
],
"returnPromise":false
}
}
Note: I have not tested the code.