[O] Checkboxes and state toggling

[Klaus Thoben]

Dear List,
I wonder if following functionality is already implemented.

Could it be achieved that, if I have a checkbox list with a TODO state
in the headline and I toggle all of the checkboxes, that the TODO state
switches automatically to DONE?

I hope the following example makes my question even more clear. 

     * TODO Organize party [1/4]
       - [ ] call people
       - [X] order food
       - [ ] think about what music to play
       - [ ] talk to the neighbors

becomes

     * DONE Organize party [4/4]
       - [X] call people
       - [X] order food
       - [X] think about what music to play
       - [X] talk to the neighbors

Cheers,
Klaus