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menu_console.py
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menu_console.py
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from lcd_menu import Command, MenuItem, Menu
import curses
class ConsoleRadioMenu(Menu):
'''A curses menu example for receiving input and displaying the menu on the console'''
def __init__(self):
# our example menu definition
items = [
MenuItem("Playlists", refresh_callback=self.load_playlists),
MenuItem("Radio", [
MenuItem("Radio Station 1"),
MenuItem("Radio Station 2"),
MenuItem("Radio Station 3")
]),
MenuItem("Settings", [
MenuItem("IP Address"),
MenuItem("Shutdown"),
]),
Command("Volume UP", self.volume_up),
Command("Volume DOWN", self.volume_down)
]
# pass all this to the base class
return super(ConsoleRadioMenu, self).__init__(items, self.update)
def loop(self):
'''Main application loop. Receives input and dispatches one of either "up", "down", "select" or "back" commands.'''
# standard curses init
self.stdscr = curses.initscr()
curses.noecho()
curses.cbreak()
self.stdscr.keypad(1)
# display the initial menu
self.update(self.current_menu)
try:
while 1:
c = self.stdscr.getch()
if c == curses.KEY_UP:
self.up()
if c == curses.KEY_DOWN:
self.down()
if c == curses.KEY_BACKSPACE or c == 8: # backspace
self.back()
if c == curses.KEY_SELECT or c == 10: # enter
self.select()
if c == ord('q'):
raise SystemExit
finally:
curses.nocbreak()
self.stdscr.keypad(0)
curses.echo()
curses.endwin()
def update(self, menu):
'''Called to draw the current menu view.'''
self.stdscr.clear()
i = 0
for (index, item) in enumerate(menu.items):
if index == menu.selected_index:
self.stdscr.addstr(i, 0, ">> " + item.title + " <<")
else:
self.stdscr.addstr(i, 0, item.title)
i+=1
def volume_up(self, item, arg):
print "RUNNING COMMAND: VOLUME UP"
def volume_down(self, item, arg):
print "RUNNING COMMAND: VOLUME DOWN"
def on_play(self, item, arg):
print "RUNNING COMMAND: PLAY: " + item.title
def load_playlists(self, item, arg):
'''Example of a dynamic menu item callback'''
items = []
items.append(Command("Andrew's Fairly Long Playlist", self.on_play))
items.append(Command("Dynamic 2", self.on_play))
items.append(Command("Dynamic 3", self.on_play))
items.append(Command("Dynamic 4", self.on_play))
return items
radioMenu = ConsoleRadioMenu()
radioMenu.loop()