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| 1 | class LineItem(urwid.WidgetWrap): | |
| 2 | ||
| 3 | def __init__(self, user, content): | |
| 4 | self.user = urwid.Text(user) | |
| 5 | self.content = urwid.Text(content) | |
| 6 | self.item = [ | |
| 7 | ('fixed', 10, urwid.Padding(
| |
| 8 | urwid.AttrMap(self.user, 'text'), left=2)), | |
| 9 | urwid.AttrMap(self.content, 'text') | |
| 10 | ] | |
| 11 | self.info = '%s: %s' % (user, content) | |
| 12 | w = urwid.Columns(self.item) | |
| 13 | self.__super.__init__(w) | |
| 14 | ||
| 15 | def selectable(self): | |
| 16 | return True | |
| 17 | def keypress(self, size, key): | |
| 18 | return key | |
| 19 | ||
| 20 | class ExtenedEdit(urwid.Edit): | |
| 21 | __metaclass = urwid.signals.MetaSignals | |
| 22 | signals = ['done'] | |
| 23 | ||
| 24 | def keypress(self, size, key): | |
| 25 | ||
| 26 | if key is 'enter': | |
| 27 | urwid.emit_signal(self, 'done', self, self.get_edit_text()) | |
| 28 | super(ExtenedEdit, self).set_edit_text('')
| |
| 29 | return | |
| 30 | elif key is 'esc': | |
| 31 | urwid.emit_signal(self, 'done', None) | |
| 32 | super(ExtenedEdit, self).set_edit_text('')
| |
| 33 | return | |
| 34 | urwid.Edit.keypress(self, size, key) | |
| 35 | ||
| 36 | def selectable(self): | |
| 37 | return True | |
| 38 | ||
| 39 | class MainWindow(object): | |
| 40 | ||
| 41 | """ | |
| 42 | -------context------- | |
| 43 | | --inner context---- | | |
| 44 | || HEADER || | |
| 45 | || || | |
| 46 | || BODY || | |
| 47 | || || | |
| 48 | || DIVIDER || | |
| 49 | | ------------------- | | |
| 50 | | FOOTER | | |
| 51 | --------------------- | |
| 52 | """ | |
| 53 | _palette = [ | |
| 54 | ('divider', 'black', 'dark cyan', 'standout'),
| |
| 55 | ('text', 'light gray', 'default'),
| |
| 56 | ('body', 'text'),
| |
| 57 | ('footer', 'text'),
| |
| 58 | ('header', 'text'), ]
| |
| 59 | ||
| 60 | def __init__(self): | |
| 61 | self.items = [] | |
| 62 | ||
| 63 | def input_cb(key): | |
| 64 | if key is 'f8': | |
| 65 | raise urwid.ExitMainLoop() | |
| 66 | if key is 'enter': | |
| 67 | text = self.txt_footer.get_edit_text() | |
| 68 | self.items.append(LineItem('user:', text))
| |
| 69 | ||
| 70 | def run(self): | |
| 71 | self.build_interface() | |
| 72 | ||
| 73 | self.main_loop = urwid.MainLoop( | |
| 74 | self.context, | |
| 75 | palette=self._palette, | |
| 76 | handle_mouse=False, | |
| 77 | unhandled_input=self.input_cb, | |
| 78 | ) | |
| 79 | ||
| 80 | self.main_loop.run() | |
| 81 | ||
| 82 | def _create_widget(self): | |
| 83 | """ create the UI widgets """ | |
| 84 | self.header = urwid.Text("HEADER")
| |
| 85 | self.txt_footer = ExtenedEdit(">> ")
| |
| 86 | self.divider = urwid.Text("Initializing.")
| |
| 87 | item = LineItem('bavan', 'Hello')
| |
| 88 | self.items.append(item) | |
| 89 | self.generic_output_walker = urwid.SimpleListWalker(self.items) | |
| 90 | self.lst_body = urwid.ListBox( | |
| 91 | self.generic_output_walker) | |
| 92 | ||
| 93 | def _setup_widgets(self): | |
| 94 | self.header = urwid.AttrMap(self.header, 'divider') | |
| 95 | self.footer = urwid.AttrMap(self.txt_footer, 'footer') | |
| 96 | self.divider = urwid.AttrMap(self.divider, 'divider') | |
| 97 | self.body = urwid.AttrMap(self.lst_body, 'body') | |
| 98 | ||
| 99 | def _setup_context(self): | |
| 100 | self.context = urwid.Frame(self.body, header=self.header, | |
| 101 | footer=self.divider) | |
| 102 | self.context = urwid.Frame(self.context, footer=self.footer) | |
| 103 | self.context.set_focus('footer')
| |
| 104 | ||
| 105 | def build_interface(self): | |
| 106 | self._create_widget() | |
| 107 | self._setup_widgets() | |
| 108 | self._setup_context() | |
| 109 | ||
| 110 | if __name__ == '__main__': | |
| 111 | import sys | |
| 112 | try: | |
| 113 | main_win = MainWindow() | |
| 114 | main_win.run() | |
| 115 | except KeyboardInterrupt: | |
| 116 | sys.exit(0) |
