annotate examples/menu.py @ 42:585302e84c1f

fixed typo + added comment
author Goffi <goffi@goffi.org>
date Sun, 20 Feb 2011 00:37:54 +0100
parents 589e5e22f8f1
children e49d8f289a73
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1 #!/usr/bin/python
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2 # -*- coding: utf-8 -*-
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3
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4 import urwid
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5 from urwid_satext.sat_widgets import Menu
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6 import time
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8
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9 #These palette is optional, but it's easier to use with some colors :)
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11 const_PALETTE = [('menubar', 'light gray,bold', 'dark red'),
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12 ('menubar_focus', 'light gray,bold', 'dark green'),
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13 ('menuitem', 'light gray,bold', 'dark red'),
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14 ('menuitem_focus', 'light gray,bold', 'dark green'),
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15 ]
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16
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17 class MenuDemo(object):
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18
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19 def __init__(self):
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20 _frame = urwid.Frame(urwid.Filler(urwid.Text('Menu demo', align='center')))
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21 self.loop = urwid.MainLoop(_frame, const_PALETTE, unhandled_input=self.keyHandler)
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22 _frame.set_header(self.buildMenu())
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23 _frame.set_focus('header')
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24
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25 def run(self):
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26 self.loop.run()
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28 def _messageExit(self, message):
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29 #We print the menu data in the middle of the screen
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30 new_widget = urwid.Filler(urwid.Text(message, align='center'))
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31 self.loop.widget = new_widget
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32 self.loop.draw_screen()
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33 #5 seconds pause
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34 time.sleep(5)
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35 #see you
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36 raise urwid.ExitMainLoop()
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38 def menu_cb(self, menu_data):
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39 self._messageExit("Menu selected: %s/%s" % menu_data)
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41 def exit_cb(self, menu_data):
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42 self._messageExit("Exiting throught 'Exit' menu item")
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44 def buildMenu(self):
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45 self.menu = Menu(self.loop)
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46 _menu1 = "Menu 1"
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47 self.menu.addMenu(_menu1, "Item 1", self.menu_cb) #Adding a menu is quite easy
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48 self.menu.addMenu(_menu1, "Item 2", self.menu_cb) #Here the callback is always the same,
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49 self.menu.addMenu(_menu1, "Item 3", self.menu_cb) #but you use differents one in real life :)
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50 self.menu.addMenu(_menu1, "Exit (C-x)", self.exit_cb, 'ctrl x') #You can also add a shortcut
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51 _menu2 = "Menu 2"
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52 self.menu.addMenu(_menu2, "Item 1", self.menu_cb)
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53 self.menu.addMenu(_menu2, "Item 2", self.menu_cb)
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54 self.menu.addMenu(_menu2, "Item 3", self.menu_cb)
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55 return self.menu
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57 def keyHandler(self, input):
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58 """We leave if user press a quit char"""
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59 if input in ('esc','q','Q'):
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60 raise urwid.ExitMainLoop()
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61 else:
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62 return self.menu.checkShortcuts(input) #needed to manage shortcuts
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64 demo = MenuDemo()
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65 demo.run()