rocketty.py

import urwid as u

with open('text.txt', 'rt') as f:
    text_lines = f.read().split('\n')

def unhandled_input(key):
    pass #body.keypress(key)

def send_line(line):
    pass

class ChatEdit(u.Edit):

    def keypress(self, size, key):
        if key == 'enter':
            send_line(edit.get_edit_text())
            edit.set_edit_text('')
            return None
        else:
            return super().keypress(size, key)

class FallbackFocusFrame(u.Frame):

    def keypress(self, size, key):
        key = self._body_keypress(size, key)
        if not key:
            return None
        else:
            return self._footer_keypress(size, key)

    def _body_keypress(self, size, key):
        maxcol, maxrow = size
        remaining = maxrow
        if self.header is not None:
            remaining -= self.header.rows((maxcol,))
        if self.footer is not None:
            remaining -= self.footer.rows((maxcol,))
        if remaining <= 0:
            return key
        if not self.body.selectable():
            return key
        return self.body.keypress((maxcol, remaining), key)

    def _footer_keypress(self, size, key):
        maxcol, maxrow = size
        return self.footer.keypress((maxcol,), key)

palette = [
    ('bar', 'white', 'dark blue'),
]
header = u.AttrMap(u.Text(' Rocketty'), 'bar')
list_walker = u.SimpleFocusListWalker([u.Text(t) for t in text_lines])
body = u.ListBox(list_walker)
list_walker.set_focus(list_walker.positions()[-1])
status = u.AttrMap(u.Text(' [18:13] [raek(+Ri) (zZzZ)] [1:freenode (change with ^X)] '), 'bar')
edit = ChatEdit(wrap='clip')
edit_line = u.Columns([('pack', u.Text('[#d1d] ')), edit])
footer = u.Pile([status, edit_line])
frame = FallbackFocusFrame(body, header, footer, focus_part='footer')
loop = u.MainLoop(frame, palette=palette, unhandled_input=unhandled_input, handle_mouse=False)
loop.run()