Filter button should be aware of others filters state

I am using the latest trunk version.
In CRM Phone Call list view. You can toggle the 'inbound' filter button, and the 'outbound' filter button at the same time. So the search result is none. What is expected: When you click on the 'Outbound', if the 'Inbound' is toggled down, the 'Inbound' should be toggled up again.

A solution could be to add a button group. Like in HTML radio button forms. Only 1 button of a group can be down.
A better solution: look in the filter button conditions, and look if they are compatible. If it's not, toggle all other button.