class View(urwid.WidgetWrap):
"""
A class responsible for providing the application's interface.
"""
def __init__(self, controller: Any) -> None:
self.controller = controller
self.palette = controller.theme
self.model = controller.model
self.users = self.model.users
self.pinned_streams = self.model.pinned_streams
self.unpinned_streams = self.model.unpinned_streams
self.write_box = WriteBox(self)
self.search_box = SearchBox(self.controller)
self.message_view: Any = None
self.displaying_selection_hint = False
super().__init__(self.main_window())
def left_column_view(self) -> Any:
tab = TabView(
f"{AUTOHIDE_TAB_LEFT_ARROW} STREAMS & TOPICS {AUTOHIDE_TAB_LEFT_ARROW}"
)
panel = LeftColumnView(self)
return panel, tab
def middle_column_view(self) -> Any:
self.middle_column = MiddleColumnView(self, self.model, self.write_box,
self.search_box)
return urwid.LineBox(
self.middle_column,
title="Messages",
title_attr="column_title",
tline=COLUMN_TITLE_BAR_LINE,
bline="",
trcorner="│",
tlcorner="│",
)
def right_column_view(self) -> Any:
tab = TabView(
f"{AUTOHIDE_TAB_RIGHT_ARROW} USERS {AUTOHIDE_TAB_RIGHT_ARROW}")
self.users_view = RightColumnView(self)
panel = urwid.LineBox(
self.users_view,
title="Users",
title_attr="column_title",
tlcorner=COLUMN_TITLE_BAR_LINE,
tline=COLUMN_TITLE_BAR_LINE,
trcorner=COLUMN_TITLE_BAR_LINE,
lline="",
blcorner="─",
rline="",
bline="",
brcorner="",
)
return panel, tab
def get_random_help(self) -> List[Any]:
# Get random allowed hotkey (ie. eligible for being displayed as a tip)
allowed_commands = commands_for_random_tips()
if not allowed_commands:
return ["Help(?): "]
random_command = random.choice(allowed_commands)
return [
"Help(?): ",
("footer_contrast", " " + ", ".join(random_command["keys"]) + " "),
" " + random_command["help_text"],
]
@asynch
def set_footer_text(
self,
text_list: Optional[List[Any]] = None,
style: str = "footer",
duration: Optional[float] = None,
) -> None:
# Avoid updating repeatedly (then pausing and showing default text)
# This is simple, though doesn't avoid starting one thread for each call
if text_list == self._w.footer.text:
return
if text_list is None:
text = self.get_random_help()
else:
text = text_list
self.frame.footer.set_text(text)
self.frame.footer.set_attr_map({None: style})
self.controller.update_screen()
if duration is not None:
assert duration > 0
time.sleep(duration)
self.set_footer_text()
@asynch
def set_typeahead_footer(self, suggestions: List[str],
state: Optional[int], is_truncated: bool) -> None:
if suggestions:
# Wrap by space.
footer_text: List[Any] = [" " + s + " " for s in suggestions]
if state is not None:
footer_text[state] = ("footer_contrast", footer_text[state])
if is_truncated:
footer_text += [" [more] "]
footer_text.insert(0, [" "]) # Add leading space.
else:
footer_text = [" [No matches found]"]
self.set_footer_text(footer_text)
def footer_view(self) -> Any:
text_header = self.get_random_help()
return urwid.AttrWrap(urwid.Text(text_header), "footer")
def main_window(self) -> Any:
self.left_panel, self.left_tab = self.left_column_view()
self.center_panel = self.middle_column_view()
self.right_panel, self.right_tab = self.right_column_view()
if self.controller.autohide:
body = [
(TAB_WIDTH, self.left_tab),
("weight", 10, self.center_panel),
(TAB_WIDTH, self.right_tab),
]
else:
body = [
(LEFT_WIDTH, self.left_panel),
("weight", 10, self.center_panel),
(RIGHT_WIDTH, self.right_panel),
]
self.body = urwid.Columns(body, focus_column=0)
# NOTE: message_view is None, but middle_column_view is called above
# and sets it.
assert self.message_view is not None
# NOTE: set_focus_changed_callback is actually called before the
# focus is set, so the message is not read yet, it will be read when
# the focus is changed again either vertically or horizontally.
self.body._contents.set_focus_changed_callback(
self.message_view.read_message)
title_text = " {full_name} ({email}) - {server_name} ({url}) ".format(
full_name=self.model.user_full_name,
email=self.model.user_email,
server_name=self.model.server_name,
url=self.model.server_url,
)
title_bar = urwid.Columns([
urwid.Divider(div_char=APPLICATION_TITLE_BAR_LINE),
(len(title_text), urwid.Text([title_text])),
urwid.Divider(div_char=APPLICATION_TITLE_BAR_LINE),
])
self.frame = urwid.Frame(self.body,
title_bar,
focus_part="body",
footer=self.footer_view())
# Show left panel on startup in autohide mode
self.show_left_panel(visible=True)
return self.frame
def show_left_panel(self, *, visible: bool) -> None:
if not self.controller.autohide:
return
if visible:
self.frame.body = urwid.Overlay(
urwid.Columns([(LEFT_WIDTH, self.left_panel),
(1, urwid.SolidFill("▏"))]),
self.body,
align="left",
width=LEFT_WIDTH + 1,
valign="top",
height=("relative", 100),
)
else:
self.frame.body = self.body
# FIXME: This can be avoided after fixing the "sacrificing 1st
# unread msg" issue and setting focus_column=1 when initializing.
self.body.focus_position = 1
def show_right_panel(self, *, visible: bool) -> None:
if not self.controller.autohide:
return
if visible:
self.frame.body = urwid.Overlay(
urwid.Columns([(1, urwid.SolidFill("▕")),
(RIGHT_WIDTH, self.right_panel)]),
self.body,
align="right",
width=RIGHT_WIDTH + 1,
valign="top",
height=("relative", 100),
)
else:
self.frame.body = self.body
# FIXME: This can be avoided after fixing the "sacrificing 1st
# unread msg" issue and setting focus_column=1 when initializing.
self.body.focus_position = 1
def keypress(self, size: urwid_Box, key: str) -> Optional[str]:
self.model.new_user_input = True
if self.controller.is_in_editor_mode():
return self.controller.current_editor().keypress((size[1], ), key)
# Redirect commands to message_view.
elif (is_command_key("SEARCH_MESSAGES", key)
or is_command_key("NEXT_UNREAD_TOPIC", key)
or is_command_key("NEXT_UNREAD_PM", key)
or is_command_key("STREAM_MESSAGE", key)
or is_command_key("PRIVATE_MESSAGE", key)):
self.show_left_panel(visible=False)
self.show_right_panel(visible=False)
self.body.focus_col = 1
self.middle_column.keypress(size, key)
return key
elif is_command_key("ALL_PM", key):
self.pm_button.activate(key)
elif is_command_key("ALL_STARRED", key):
self.starred_button.activate(key)
elif is_command_key("ALL_MENTIONS", key):
self.mentioned_button.activate(key)
elif is_command_key("SEARCH_PEOPLE", key):
# Start User Search if not in editor_mode
self.show_left_panel(visible=False)
self.show_right_panel(visible=True)
self.body.focus_position = 2
self.users_view.keypress(size, key)
return key
elif is_command_key("SEARCH_STREAMS", key) or is_command_key(
"SEARCH_TOPICS", key):
# jump stream search
self.show_right_panel(visible=False)
self.show_left_panel(visible=True)
self.body.focus_position = 0
self.left_panel.keypress(size, key)
return key
elif is_command_key("OPEN_DRAFT", key):
saved_draft = self.model.session_draft_message()
if saved_draft:
self.show_left_panel(visible=False)
self.show_right_panel(visible=False)
if saved_draft["type"] == "stream":
stream_id = self.model.stream_id_from_name(
saved_draft["to"])
self.write_box.stream_box_view(
caption=saved_draft["to"],
title=saved_draft["subject"],
stream_id=stream_id,
)
elif saved_draft["type"] == "private":
recipient_user_ids = saved_draft["to"]
self.write_box.private_box_view(
recipient_user_ids=recipient_user_ids, )
content = saved_draft["content"]
self.write_box.msg_write_box.edit_text = content
self.write_box.msg_write_box.edit_pos = len(content)
self.body.focus_col = 1
self.middle_column.set_focus("footer")
else:
self.controller.report_error(
"No draft message was saved in this session.")
return key
elif is_command_key("ABOUT", key):
self.controller.show_about()
return key
elif is_command_key("HELP", key):
# Show help menu
self.controller.show_help()
return key
elif is_command_key("MARKDOWN_HELP", key):
self.controller.show_markdown_help()
return key
return super().keypress(size, key)
def mouse_event(self, size: urwid_Box, event: str, button: int, col: int,
row: int, focus: bool) -> bool:
if event == "mouse drag":
self.model.controller.view.set_footer_text(
[
"Try pressing ",
("footer_contrast", f" {MOUSE_SELECTION_KEY} "),
" and dragging to select text.",
],
"task:warning",
)
self.displaying_selection_hint = True
elif event == "mouse release" and self.displaying_selection_hint:
self.model.controller.view.set_footer_text()
self.displaying_selection_hint = False
return super().mouse_event(size, event, button, col, row, focus)
class View(urwid.WidgetWrap):
"""
A class responsible for providing the application's interface.
"""
LEFT_WIDTH = 27
RIGHT_WIDTH = 23
def __init__(self, controller: Any) -> None:
self.controller = controller
self.palette = controller.theme
self.model = controller.model
self.users = self.model.users
self.pinned_streams = self.model.pinned_streams
self.unpinned_streams = self.model.unpinned_streams
self.write_box = WriteBox(self)
self.search_box = SearchBox(self.controller)
self.message_view: Any = None
super().__init__(self.main_window())
def left_column_view(self) -> Any:
return LeftColumnView(View.LEFT_WIDTH, self)
def middle_column_view(self) -> Any:
self.middle_column = MiddleColumnView(self, self.model, self.write_box,
self.search_box)
return urwid.LineBox(self.middle_column,
title='Messages',
tline=LIST_TITLE_BAR_LINE,
bline='',
trcorner='│',
tlcorner='│')
def right_column_view(self) -> Any:
self.users_view = RightColumnView(View.RIGHT_WIDTH, self)
return urwid.LineBox(self.users_view,
title="Users",
tlcorner=LIST_TITLE_BAR_LINE,
tline=LIST_TITLE_BAR_LINE,
trcorner=LIST_TITLE_BAR_LINE,
lline='',
blcorner='─',
rline='',
bline='',
brcorner='')
def get_random_help(self) -> List[Any]:
# Get random allowed hotkey (ie. eligible for being displayed as a tip)
allowed_commands = commands_for_random_tips()
if not allowed_commands:
return [
'Help(?): ',
]
random_command = random.choice(allowed_commands)
return [
'Help(?): ',
('code', ' ' + ', '.join(random_command['keys']) + ' '),
' ' + random_command['help_text'],
]
@asynch
def set_footer_text(self,
text_list: Optional[List[Any]] = None,
duration: Optional[float] = None) -> None:
if text_list is None:
text = self.get_random_help()
else:
text = text_list
self._w.footer.set_text(text)
self.controller.update_screen()
if duration is not None:
assert duration > 0
time.sleep(duration)
self.set_footer_text()
@asynch
def set_typeahead_footer(self, suggestions: List[str],
state: Optional[int], is_truncated: bool) -> None:
if suggestions:
# Wrap by space.
footer_text: List[Any] = [' ' + s + ' ' for s in suggestions]
if state is not None:
footer_text[state] = ('code', footer_text[state])
if is_truncated:
footer_text += [' [more] ']
footer_text.insert(0, [' ']) # Add leading space.
else:
footer_text = [' [No matches found]']
self.set_footer_text(footer_text)
def footer_view(self) -> Any:
text_header = self.get_random_help()
return urwid.AttrWrap(urwid.Text(text_header), 'footer')
def main_window(self) -> Any:
self.left_panel = self.left_column_view()
self.center_panel = self.middle_column_view()
self.right_panel = self.right_column_view()
if self.controller.autohide:
body = [
(View.LEFT_WIDTH, self.left_panel),
('weight', 10, self.center_panel),
(0, self.right_panel),
]
else:
body = [
(View.LEFT_WIDTH, self.left_panel),
('weight', 10, self.center_panel),
(View.RIGHT_WIDTH, self.right_panel),
]
self.body = urwid.Columns(body, focus_column=0)
# NOTE: message_view is None, but middle_column_view is called above
# and sets it.
assert self.message_view is not None
# NOTE: set_focus_changed_callback is actually called before the
# focus is set, so the message is not read yet, it will be read when
# the focus is changed again either vertically or horizontally.
self.body._contents.set_focus_changed_callback(
self.message_view.read_message)
title_text = " {full_name} ({email}) - {server_name} ({url}) ".format(
full_name=self.model.user_full_name,
email=self.model.user_email,
server_name=self.model.server_name,
url=self.model.server_url)
title_bar = urwid.Columns([
urwid.Divider(div_char=APPLICATION_TITLE_BAR_LINE),
(len(title_text), urwid.Text([title_text])),
urwid.Divider(div_char=APPLICATION_TITLE_BAR_LINE),
])
w = urwid.Frame(self.body,
title_bar,
focus_part='body',
footer=self.footer_view())
return w
def show_left_panel(self, *, visible: bool) -> None:
if not self.controller.autohide:
return
width = View.LEFT_WIDTH if visible else 0
self.body.contents[0] = (
self.left_panel,
self.body.options(width_type='given', width_amount=width),
)
if visible:
self.body.focus_position = 0
def show_right_panel(self, *, visible: bool) -> None:
if not self.controller.autohide:
return
width = View.RIGHT_WIDTH if visible else 0
self.body.contents[2] = (
self.right_panel,
self.body.options(width_type='given', width_amount=width),
)
if visible:
self.body.focus_position = 2
# FIXME: The type of size should be urwid_Size; this needs checking
def keypress(self, size: Tuple[int, int], key: str) -> Optional[str]:
self.model.new_user_input = True
if self.controller.is_in_editor_mode():
return self.controller.current_editor().keypress((size[1], ), key)
# Redirect commands to message_view.
elif (is_command_key('SEARCH_MESSAGES', key)
or is_command_key('NEXT_UNREAD_TOPIC', key)
or is_command_key('NEXT_UNREAD_PM', key)
or is_command_key('STREAM_MESSAGE', key)
or is_command_key('PRIVATE_MESSAGE', key)):
self.body.focus_col = 1
self.middle_column.keypress(size, key)
return key
elif is_command_key('ALL_PM', key):
self.model.controller.show_all_pm(self)
self.body.focus_col = 1
elif is_command_key('ALL_STARRED', key):
self.model.controller.show_all_starred(self)
self.body.focus_col = 1
elif is_command_key('ALL_MENTIONS', key):
self.model.controller.show_all_mentions(self)
self.body.focus_col = 1
elif is_command_key('SEARCH_PEOPLE', key):
# Start User Search if not in editor_mode
self.body.focus_position = 2
self.users_view.keypress(size, 'w')
self.show_left_panel(visible=False)
self.show_right_panel(visible=True)
self.user_search.set_edit_text("")
self.controller.enter_editor_mode_with(self.user_search)
return key
elif (is_command_key('SEARCH_STREAMS', key)
or is_command_key('SEARCH_TOPICS', key)):
# jump stream search
self.body.focus_position = 0
self.left_panel.keypress(size, 'q')
self.show_right_panel(visible=False)
self.show_left_panel(visible=True)
if self.left_panel.is_in_topic_view:
search_box = self.topic_w.topic_search_box
else:
search_box = self.stream_w.stream_search_box
search_box.set_edit_text("")
self.controller.enter_editor_mode_with(search_box)
return key
elif is_command_key('OPEN_DRAFT', key):
saved_draft = self.model.session_draft_message()
if saved_draft:
if saved_draft['type'] == 'stream':
stream_id = self.model.stream_id_from_name(
saved_draft['to'])
self.write_box.stream_box_view(
caption=saved_draft['to'],
title=saved_draft['subject'],
stream_id=stream_id,
)
elif saved_draft['type'] == 'private':
email_list = saved_draft['to']
recipient_user_ids = [
self.model.user_dict[email.strip()]['user_id']
for email in email_list
]
self.write_box.private_box_view(
emails=email_list,
recipient_user_ids=recipient_user_ids,
)
content = saved_draft['content']
self.write_box.msg_write_box.edit_text = content
self.write_box.msg_write_box.edit_pos = len(content)
self.middle_column.set_focus('footer')
else:
self.set_footer_text(
'No draft message was saved in'
' this session.', 3)
return key
elif is_command_key('ABOUT', key):
self.controller.show_about()
return key
elif is_command_key('HELP', key):
# Show help menu
self.controller.show_help()
return key
# replace alternate keys with arrow/functional keys
# This is needed for navigating in widgets
# other than message_view.
elif is_command_key('GO_UP', key):
key = 'up'
elif is_command_key('GO_DOWN', key):
key = 'down'
elif is_command_key('GO_LEFT', key):
key = 'left'
elif is_command_key('GO_RIGHT', key):
key = 'right'
elif is_command_key('SCROLL_UP', key):
key = 'page up'
elif is_command_key('SCROLL_DOWN', key):
key = 'page down'
elif is_command_key('GO_TO_BOTTOM', key):
key = 'end'
return super().keypress(size, key)
class View(urwid.WidgetWrap):
"""
A class responsible for providing the application's interface.
"""
LEFT_WIDTH = 27
RIGHT_WIDTH = 23
def __init__(self, controller: Any) -> None:
self.controller = controller
self.palette = controller.theme
self.model = controller.model
self.users = self.model.users
self.pinned_streams = self.model.pinned_streams
self.unpinned_streams = self.model.unpinned_streams
self.write_box = WriteBox(self)
self.search_box = SearchBox(self.controller)
self.message_view: Any = None
super().__init__(self.main_window())
def left_column_view(self) -> Any:
return LeftColumnView(self)
def middle_column_view(self) -> Any:
self.middle_column = MiddleColumnView(self, self.model, self.write_box,
self.search_box)
return urwid.LineBox(
self.middle_column,
title="Messages",
title_attr="column_title",
tline=COLUMN_TITLE_BAR_LINE,
bline="",
trcorner="│",
tlcorner="│",
)
def right_column_view(self) -> Any:
self.users_view = RightColumnView(self)
return urwid.LineBox(
self.users_view,
title="Users",
title_attr="column_title",
tlcorner=COLUMN_TITLE_BAR_LINE,
tline=COLUMN_TITLE_BAR_LINE,
trcorner=COLUMN_TITLE_BAR_LINE,
lline="",
blcorner="─",
rline="",
bline="",
brcorner="",
)
def get_random_help(self) -> List[Any]:
# Get random allowed hotkey (ie. eligible for being displayed as a tip)
allowed_commands = commands_for_random_tips()
if not allowed_commands:
return ["Help(?): "]
random_command = random.choice(allowed_commands)
return [
"Help(?): ",
("footer_contrast", " " + ", ".join(random_command["keys"]) + " "),
" " + random_command["help_text"],
]
@asynch
def set_footer_text(
self,
text_list: Optional[List[Any]] = None,
style: str = "footer",
duration: Optional[float] = None,
) -> None:
if text_list is None:
text = self.get_random_help()
else:
text = text_list
self._w.footer.set_text(text)
self._w.footer.set_attr_map({None: style})
self.controller.update_screen()
if duration is not None:
assert duration > 0
time.sleep(duration)
self.set_footer_text()
@asynch
def set_typeahead_footer(self, suggestions: List[str],
state: Optional[int], is_truncated: bool) -> None:
if suggestions:
# Wrap by space.
footer_text: List[Any] = [" " + s + " " for s in suggestions]
if state is not None:
footer_text[state] = ("footer_contrast", footer_text[state])
if is_truncated:
footer_text += [" [more] "]
footer_text.insert(0, [" "]) # Add leading space.
else:
footer_text = [" [No matches found]"]
self.set_footer_text(footer_text)
def footer_view(self) -> Any:
text_header = self.get_random_help()
return urwid.AttrWrap(urwid.Text(text_header), "footer")
def main_window(self) -> Any:
self.left_panel = self.left_column_view()
self.center_panel = self.middle_column_view()
self.right_panel = self.right_column_view()
if self.controller.autohide:
body = [
(View.LEFT_WIDTH, self.left_panel),
("weight", 10, self.center_panel),
(0, self.right_panel),
]
else:
body = [
(View.LEFT_WIDTH, self.left_panel),
("weight", 10, self.center_panel),
(View.RIGHT_WIDTH, self.right_panel),
]
self.body = urwid.Columns(body, focus_column=0)
# NOTE: message_view is None, but middle_column_view is called above
# and sets it.
assert self.message_view is not None
# NOTE: set_focus_changed_callback is actually called before the
# focus is set, so the message is not read yet, it will be read when
# the focus is changed again either vertically or horizontally.
self.body._contents.set_focus_changed_callback(
self.message_view.read_message)
title_text = " {full_name} ({email}) - {server_name} ({url}) ".format(
full_name=self.model.user_full_name,
email=self.model.user_email,
server_name=self.model.server_name,
url=self.model.server_url,
)
title_bar = urwid.Columns([
urwid.Divider(div_char=APPLICATION_TITLE_BAR_LINE),
(len(title_text), urwid.Text([title_text])),
urwid.Divider(div_char=APPLICATION_TITLE_BAR_LINE),
])
w = urwid.Frame(self.body,
title_bar,
focus_part="body",
footer=self.footer_view())
return w
def show_left_panel(self, *, visible: bool) -> None:
if not self.controller.autohide:
return
width = View.LEFT_WIDTH if visible else 0
self.body.contents[0] = (
self.left_panel,
self.body.options(width_type="given", width_amount=width),
)
if visible:
self.body.focus_position = 0
def show_right_panel(self, *, visible: bool) -> None:
if not self.controller.autohide:
return
width = View.RIGHT_WIDTH if visible else 0
self.body.contents[2] = (
self.right_panel,
self.body.options(width_type="given", width_amount=width),
)
if visible:
self.body.focus_position = 2
def keypress(self, size: urwid_Box, key: str) -> Optional[str]:
self.model.new_user_input = True
if self.controller.is_in_editor_mode():
return self.controller.current_editor().keypress((size[1], ), key)
# Redirect commands to message_view.
elif (is_command_key("SEARCH_MESSAGES", key)
or is_command_key("NEXT_UNREAD_TOPIC", key)
or is_command_key("NEXT_UNREAD_PM", key)
or is_command_key("STREAM_MESSAGE", key)
or is_command_key("PRIVATE_MESSAGE", key)):
self.body.focus_col = 1
self.middle_column.keypress(size, key)
return key
elif is_command_key("ALL_PM", key):
self.model.controller.narrow_to_all_pm()
self.body.focus_col = 1
elif is_command_key("ALL_STARRED", key):
self.model.controller.narrow_to_all_starred()
self.body.focus_col = 1
elif is_command_key("ALL_MENTIONS", key):
self.model.controller.narrow_to_all_mentions()
self.body.focus_col = 1
elif is_command_key("SEARCH_PEOPLE", key):
# Start User Search if not in editor_mode
self.body.focus_position = 2
self.users_view.keypress(size, key)
self.show_left_panel(visible=False)
self.show_right_panel(visible=True)
self.controller.enter_editor_mode_with(self.user_search)
return key
elif is_command_key("SEARCH_STREAMS", key) or is_command_key(
"SEARCH_TOPICS", key):
# jump stream search
self.body.focus_position = 0
self.left_panel.keypress(size, key)
self.show_right_panel(visible=False)
self.show_left_panel(visible=True)
if self.left_panel.is_in_topic_view:
search_box = self.topic_w.topic_search_box
else:
search_box = self.stream_w.stream_search_box
self.controller.enter_editor_mode_with(search_box)
return key
elif is_command_key("OPEN_DRAFT", key):
saved_draft = self.model.session_draft_message()
if saved_draft:
if saved_draft["type"] == "stream":
stream_id = self.model.stream_id_from_name(
saved_draft["to"])
self.write_box.stream_box_view(
caption=saved_draft["to"],
title=saved_draft["subject"],
stream_id=stream_id,
)
elif saved_draft["type"] == "private":
email_list = saved_draft["to"]
recipient_user_ids = [
self.model.user_dict[email.strip()]["user_id"]
for email in email_list
]
self.write_box.private_box_view(
emails=email_list,
recipient_user_ids=recipient_user_ids,
)
content = saved_draft["content"]
self.write_box.msg_write_box.edit_text = content
self.write_box.msg_write_box.edit_pos = len(content)
self.body.focus_col = 1
self.middle_column.set_focus("footer")
else:
self.controller.report_error(
"No draft message was saved in this session.")
return key
elif is_command_key("ABOUT", key):
self.controller.show_about()
return key
elif is_command_key("HELP", key):
# Show help menu
self.controller.show_help()
return key
# replace alternate keys with arrow/functional keys
# This is needed for navigating in widgets
# other than message_view.
elif is_command_key("GO_UP", key):
key = "up"
elif is_command_key("GO_DOWN", key):
key = "down"
elif is_command_key("GO_LEFT", key):
key = "left"
elif is_command_key("GO_RIGHT", key):
key = "right"
elif is_command_key("SCROLL_UP", key):
key = "page up"
elif is_command_key("SCROLL_DOWN", key):
key = "page down"
elif is_command_key("GO_TO_BOTTOM", key):
key = "end"
return super().keypress(size, key)