For a PC messenger like application, in the 'Inbox' view, messages are arranged in a list.
I have a mouse hover state and a selected state. the selected state is invoked by clicking once on the item, which does nothing but visually highlight the item, since to open the message you need to double click. So the only use the 'selected state' has is to afford your position in the list if you navigate via the keyboard.
Given this, is it OK to drop the 'on single click --> select item' behavior?
By doing this i'll have to "hijack" the hover state from the mouse to the keyboard in case the user moves to keyboard navigation. Is that acceptable?