Exemplo n.º 1
0
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)
Exemplo n.º 2
0
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)
Exemplo n.º 3
0
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)