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dotfiles/scripts/install/menu.py
2018-11-30 21:27:40 -05:00

103 lines
2.6 KiB
Python
Executable File

#!/usr/bin/python
import curses
from curses import panel
class BaseMenu:
def __init__(self, stdscreen):
self.window = stdscreen.subwin(0, 0)
self.window.keypad(1)
self.panel = panel.new_panel(self.window)
self.panel.hide()
panel.update_panels()
def up(self):
self.panel.top()
self.panel.show()
self.window.clear()
def down(self):
self.window.clear()
self.panel.hide()
panel.update_panels()
curses.doupdate()
def update(self):
self.window.refresh()
curses.doupdate()
class Menu(BaseMenu):
def __init__(self, stdscreen, items):
super().__init__(stdscreen)
self.should_exit = False
self.position = 0
self.items = items
self.items.append(('exit', self.exit))
def exit(self):
self.should_exit = True
def navigate(self, offset):
self.position += offset
self.position %= len(self.items)
def draw(self):
for index, item in enumerate(self.items):
text = '%d. %s' % (index + 1, item[0])
text_mode = curses.A_REVERSE if index == self.position else curses.A_NORMAL
self.window.addstr(index + 1, 1, text, text_mode)
def get_selection(self, key):
if key in [curses.KEY_ENTER, ord('\n')]:
return self.items[self.position]
elif (key - ord('0')) in range(1, len(self.items) + 1):
return self.items[key - ord('0') - 1]
else:
return None
def input(self):
key = self.window.getch()
selection = self.get_selection(key)
if selection:
selection[1]()
if key == curses.KEY_UP:
self.navigate(-1)
elif key == curses.KEY_DOWN:
self.navigate(1)
def display(self):
self.up()
while not self.should_exit:
self.update()
self.draw()
self.input()
self.should_exit = False
self.down()
class App(object):
def __init__(self, stdscreen):
self.screen = stdscreen
curses.curs_set(0)
submenu_items = [
('beep', curses.beep),
('flash', curses.flash)
]
submenu = Menu(self.screen, submenu_items)
main_menu_items = [
('beep', curses.beep),
('flash', curses.flash),
('submenu', submenu.display)
]
main_menu = Menu(self.screen, main_menu_items)
main_menu.display()
if __name__ == '__main__':
curses.wrapper(App)