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# -*- coding: utf-8 -*-
import urwid
from urwid_utils import keys, const
from urwid_utils import PaletteEntry, Palette
BUTTONS_YES_NO = 'yes/no'
BUTTONS_OK_CANCEL = 'ok/cancel'
BUTTONS_OK = 'ok'
class DialogFrame(urwid.Frame):
def __init__(self, *args, **kwargs):
self.escape_func = kwargs.pop('escape_func')
self.escape_keys = kwargs.pop('escape_keys')
if self.escape_keys is None:
self.escape_keys = [keys.ESCAPE,]
urwid.Frame.__init__(self, *args, **kwargs)
def keypress(self, size, key):
if key in (keys.TAB, keys.UP, keys.DOWN):
if self.focus_part == const.FOCUS_BODY:
if key in (keys.TAB, keys.DOWN):
self.set_focus(const.FOCUS_FOOTER)
elif self.focus_part == const.FOCUS_FOOTER:
if key in (keys.TAB, keys.UP):
self.set_focus(const.FOCUS_BODY)
elif key in self.escape_keys:
self.escape_func()
return
return self.__super.keypress(size, key)
class DialogBase(urwid.WidgetWrap):
palette = Palette()
palette.dialog_body = PaletteEntry()
palette.dialog_header = PaletteEntry()
palette.dialog_footer = PaletteEntry()
palette.dialog_border = PaletteEntry()
palette.button = PaletteEntry()
palette.reveal_focus = PaletteEntry()
signals = ['commit']
parent = None
def __init__(self, width, height, data, loop, header_text=None, buttons=None, palette=None, escape_keys=None):
width = int(width)
if width <= 0:
width = (const.RELATIVE, 80)
height = int(height)
if height <= 0:
height = (const.RELATIVE, 80)
if palette:
self.palette = palette
self.escape_keys = escape_keys
self.loop = loop
self.parent = self.loop.widget
self.body = self.make_body(data)
self.buttons = buttons
if self.buttons is None:
self.buttons = [("OK", True, self.on_affirmative), ("Cancel", False, self.on_negatory)]
self.escape_keys = [keys.ESCAPE, 'q', 'Q']
elif isinstance(self.buttons, str):
if self.buttons == BUTTONS_YES_NO:
self.buttons = [("Yes", True, self.on_affirmative), ("No", False, self.on_negatory)]
self.escape_keys = [keys.ESCAPE, 'q', 'Q']
elif self.buttons == BUTTONS_OK_CANCEL:
self.buttons = [("OK", True, self.on_affirmative), ("Cancel", False, self.on_negatory)]
self.escape_keys = [keys.ESCAPE, 'q', 'Q']
elif self.buttons == BUTTONS_OK:
self.buttons = [("OK", True, self.on_affirmative),]
self.escape_keys = [keys.ESCAPE, 'q', 'Q', keys.ENTER]
self.frame = self.make_frame(header_text)
self.view = self.make_view(width, height)
self.add_buttons(self.buttons)
self.exitcode = None
urwid.WidgetWrap.__init__(self, self.view)
def make_body(self, data):
'please implement'
def make_frame(self, header_text):
frame = DialogFrame(self.body, focus_part=const.FOCUS_BODY, escape_func=self.default_dialog_quit_callback, escape_keys=self.escape_keys)
if header_text is not None:
frame.header = urwid.Pile(
[urwid.Text((self.palette.dialog_header.name, header_text)),
urwid.Divider('=')],
)
return frame
def make_view(self, width, height):
view = urwid.Padding(self.frame, (const.FIXED_LEFT, 2), (const.FIXED_RIGHT, 2))
view = urwid.Filler(view, (const.FIXED_TOP, 1), (const.FIXED_BOTTOM, 1))
view = urwid.AttrMap(view, self.palette.dialog_body.name)
view = urwid.LineBox(view)
view = urwid.Frame(view)
view = urwid.Overlay(view, self.parent, const.CENTER, width+2, const.MIDDLE, height+2)
return view
def callback(self):
'please implement'
def add_buttons(self, buttons):
l = []
for name, exitcode, callback in buttons:
b = urwid.Button(name, callback, user_data=exitcode)
b.exitcode = exitcode
b = urwid.AttrMap(b, attr_map=self.palette.button.name, focus_map=self.palette.reveal_focus.name)
l.append( b )
self.buttons = urwid.GridFlow(l, 10, 3, 1, const.CENTER)
self.frame.footer = urwid.Pile([
urwid.Divider('-'),
self.buttons],
focus_item = 1)
self.frame.footer = urwid.AttrMap(self.frame.footer, self.palette.dialog_footer.name)
def _button(self, *args, **kwargs):
if len(args) == 3:
_class, button, _status = args
self.exitcode = button.exitcode
self.loop.widget = self.parent
def on_affirmative(self, *args, **kwargs):
self._button(self, *args, **kwargs)
urwid.emit_signal(self, 'commit', self.callback())
def on_negatory(self, *args, **kwargs):
self._button(self, *args, **kwargs)
def show(self):
self.loop.widget = self.view
default_dialog_quit_callback = on_negatory
class YesNoDialog(DialogBase):
def __init__(self, *args, **kwargs):
kwargs['buttons'] = 'yes/no'
DialogBase.__init__(self, *args, **kwargs)
def make_body(self, data):
return urwid.Filler(urwid.Text(data))
def callback(self, *args, **kwargs):
return self.exitcode
class EditDialog(DialogBase):
def make_body(self, data):
edit_text, editor_label = data
self.edit = urwid.Edit(edit_text=edit_text)
body = urwid.ListBox(urwid.SimpleListWalker([
urwid.AttrMap(urwid.Text(editor_label), attr_map={}, focus_map=self.palette.reveal_focus.name),
urwid.AttrMap(self.edit, attr_map={}, focus_map=self.palette.reveal_focus.name),
]))
return body
def callback(self):
return self.edit.get_edit_text()
class NoticeDialog(DialogBase):
def __init__(self, *args, **kwargs):
kwargs['buttons'] = 'ok'
DialogBase.__init__(self, *args, **kwargs)
def make_body(self, data):
return urwid.Filler(urwid.Text(data))
def callback(self, *args, **kwargs):
pass
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