Activities Dialog - add filter with negated activities selection

[uni_instructor]

Liviu,

would it be possible to add a negation (x) box at the activities selection filter ?
This would give me the option to show all activities without a specific activity-tag.

Regards

UI

[Liviu Lalescu]

Hello, UI,

It is possible and I think useful. I assume 4 inversion check boxes? I mean not one overall, but one on each component of the filter.

I attach two variants of screenshots.

[Liviu Lalescu]

Dear UI,

I made this, I hope you'll like it. The test version is (for now) on https://lalescu.ro/liviu/fet/download/test/

Please let me know what you think.

[uni_instructor]

Dear Liviu,

I tested your new beta with different filter selections.
It worked as expected. 

I think it is a good idea to add the negation option to all filters in the Activities Dialog.

Regards

UI

[Liviu Lalescu]

Thank you for your feed-back, UI! 

I think it is a good idea to add the negation option to all filters in the Activities Dialog.

By this, do you mean that it is OK that I added 4 filters instead of a single one, like I did, or do you suggest further things?