Add Button to Select/Deselect All Values in Filter Widget List

[DavidWittmann]

When configuring a Filter widget with the "is any of" operator you get a list of the unique values that are available for that field.

Currently, the buttons at the bottom of this dropdown menu are for 'Show all', 'Show selection', and 'Clear selection'. I propose either adding a Select/Deselect All button to these existing buttons or adding an 'All' checkbox at the top in a similar fashion as the button for the Search widget when you configure it with multiple search sources.

Adding this functionality will be essential for making it easier to quickly select all available values that are in that list of options. 

[wtfineberg]

Great suggestion! We have a strong need for this functionality as well. It would seem intuitive that a "Select all" option would be provided alongside the existing "Clear selection" button.

[MichaelRobb]

here here!   Yes, this is really needed!

[NicoleJohnson]

This would be a HUGE improvement for me as I build out a fairly large data exploration experience for the public.

Basically, I offer a table widget for each dataset, and the way the data is often structured means there's some sort of summary value within the data, like so:

Geographic Area	Year	Industry Sector (2-Digit NAICS)	Number
County1	2026	All Industries	500
County1	2026	11: Agriculture, Forestry, Fishing and Hunting	10
County1	2026	21: Mining, Quarrying, and Oil and Gas Extraction	10
County1	2026	22: Utilities	10
...and so on	...and so on	...and so on (for 22 more categories!)	...and so on

With the number of records that are in some of these datasets, it makes sense to use filters to not immediately display ALL the data that's in the table, like so: 

Geographic Area	Year	Industry Sector (2-Digit NAICS)	Number
County1	2026	All Industries	500
County2	2026	All Industries	400

This is achievable with an "is any of" filter with the "all industries" value selected. This also means the filter shows "1 Selected," providing a hint to the user that there are more values available if they check the drop-down list.

The problem with this is that if the user does want to see all the values in the table (e.g., to download all the data), there is currently no "select all" action available in the filter widget. This means the user would have to select, one by one, all 22 additional values. Since I'm not interested in giving anyone a repetitive strain injury, I just select all the values myself (so the filter reads "26 Selected"). This way, the user can clear the selection if they want to (or use the reset button to get back to all values being selected), but it's really not ideal.

For the sake of clean data presentation and the health of my right hand, Esri, please implement this!