How to remapping up and down to C-p and C-n in project view?

I had set keybinds to emacs-like,it seems to work fine at the beginning,but when i pressed Alt+1 to show project view and then searched for class that i wanted,showing me some results,i just looked my targeted class below current cursor,in which case C-n not worked for me.I searched for mapping of C-n for down and C-p for up everywhere and not found.