Method focus_window

src/wm.rs:315–321

(&mut self, n: usize)

    }

    fn focus_window(&mut self, n: usize) {
        if n < self.windows.len() && n != self.focused {
            bring_to_front(&mut self.windows, n);
            self.focused = self.windows.len() - 1;
            self.dirty = true;
        }
    }

    pub fn resize_screen(&mut self, term_rows: u16, term_cols: u16) {
        self.term_rows = term_rows;