Пример #1
0
    def __init__(self,
                 action,
                 title,
                 text='',
                 alpha=True,
                 numeric=True,
                 symbol=True):
        """
        Used to display and control the

        @param actions: Tuple containing a name and an action function that will be called
                  with the menu widget and the contents of the text entry field when
                  selected.
        @param title:   The title to display at the top of the screen.
        @param text:    Initial text for the text entry field.
        @param alpha:   Whether to display the alphabet character board
        @param numeric: Whether to display the number character board.
        @param symbol:  Whether to display the symbol character board.
        """
        self.title = title
        self.text_entry = TextEntry(text)

        # Create common buttons
        self.action_button = Button(action[0], self.activate_action, action[1])
        self.left_button = Button(_('Left'), self.move_caret, 'left')
        self.right_button = Button(_('Right'), self.move_caret, 'right')
        self.delete_button = Button(_('Delete'), self.delete_char, None)

        # Make sure at least one character board is enabled.
        if not (alpha or numeric or symbol):
            # raise RuntimeError, 'At least one character board should be enabled!'

            return

        # Work out whether we need a column to select different character boards.
        if (alpha and not numeric and not symbol) or \
           (not alpha and numeric and not symbol) or \
           (not alpha and not numeric and symbol):
            columns = 6
        else:
            columns = 7

        #
        # Create button groups for alphabet/numbers/symbols
        #
        if alpha:
            self.alphabet_button_group = ButtonGroup(6, columns)
            keys = _('ABCDEFGHIJKLMNOPQRSTUVWXYZ ')
            self.__init_keyboard_buttons(keys, self.alphabet_button_group)

        if numeric:
            self.numbers_button_group = ButtonGroup(6, columns)
            keys = _('1234567890')
            self.__init_keyboard_buttons(keys, self.numbers_button_group)

        if symbol:
            self.symbols_button_group = ButtonGroup(6, columns)
            keys = _('!"#$%^&*();:\'@~?,.<>-=+\[]{}')
            self.__init_keyboard_buttons(keys, self.symbols_button_group)

        # If more than 1 character board is selected add the buttons to switch
        # between them.
        if (alpha and numeric) or (alpha and symbol) or (numeric and symbol):
            if alpha:
                characters_button = Button(_('ABC'), self.change_button_group,
                                           self.alphabet_button_group)
                if numeric:
                    self.numbers_button_group.set_button(
                        0, 5, characters_button)
                if symbol:
                    self.symbols_button_group.set_button(
                        0, 5, characters_button)

            if numeric:
                numbers_button = Button(_('123'), self.change_button_group,
                                        self.numbers_button_group)
                if alpha:
                    self.alphabet_button_group.set_button(1, 5, numbers_button)
                if symbol:
                    self.symbols_button_group.set_button(1, 5, numbers_button)

            if symbol:
                symbols_button = Button(_('Symbls'), self.change_button_group,
                                        self.symbols_button_group)
                if alpha:
                    self.alphabet_button_group.set_button(2, 5, symbols_button)
                if numeric:
                    self.numbers_button_group.set_button(2, 5, symbols_button)

        if alpha:
            self.button_group = self.alphabet_button_group
        elif numeric:
            self.button_group = self.numbers_button_group
        elif symbol:
            self.button_group = self.symbols_button_group
Пример #2
0
class TextEntryScreen:
    def __init__(self,
                 action,
                 title,
                 text='',
                 alpha=True,
                 numeric=True,
                 symbol=True):
        """
        Used to display and control the

        @param actions: Tuple containing a name and an action function that will be called
                  with the menu widget and the contents of the text entry field when
                  selected.
        @param title:   The title to display at the top of the screen.
        @param text:    Initial text for the text entry field.
        @param alpha:   Whether to display the alphabet character board
        @param numeric: Whether to display the number character board.
        @param symbol:  Whether to display the symbol character board.
        """
        self.title = title
        self.text_entry = TextEntry(text)

        # Create common buttons
        self.action_button = Button(action[0], self.activate_action, action[1])
        self.left_button = Button(_('Left'), self.move_caret, 'left')
        self.right_button = Button(_('Right'), self.move_caret, 'right')
        self.delete_button = Button(_('Delete'), self.delete_char, None)

        # Make sure at least one character board is enabled.
        if not (alpha or numeric or symbol):
            # raise RuntimeError, 'At least one character board should be enabled!'

            return

        # Work out whether we need a column to select different character boards.
        if (alpha and not numeric and not symbol) or \
           (not alpha and numeric and not symbol) or \
           (not alpha and not numeric and symbol):
            columns = 6
        else:
            columns = 7

        #
        # Create button groups for alphabet/numbers/symbols
        #
        if alpha:
            self.alphabet_button_group = ButtonGroup(6, columns)
            keys = _('ABCDEFGHIJKLMNOPQRSTUVWXYZ ')
            self.__init_keyboard_buttons(keys, self.alphabet_button_group)

        if numeric:
            self.numbers_button_group = ButtonGroup(6, columns)
            keys = _('1234567890')
            self.__init_keyboard_buttons(keys, self.numbers_button_group)

        if symbol:
            self.symbols_button_group = ButtonGroup(6, columns)
            keys = _('!"#$%^&*();:\'@~?,.<>-=+\[]{}')
            self.__init_keyboard_buttons(keys, self.symbols_button_group)

        # If more than 1 character board is selected add the buttons to switch
        # between them.
        if (alpha and numeric) or (alpha and symbol) or (numeric and symbol):
            if alpha:
                characters_button = Button(_('ABC'), self.change_button_group,
                                           self.alphabet_button_group)
                if numeric:
                    self.numbers_button_group.set_button(
                        0, 5, characters_button)
                if symbol:
                    self.symbols_button_group.set_button(
                        0, 5, characters_button)

            if numeric:
                numbers_button = Button(_('123'), self.change_button_group,
                                        self.numbers_button_group)
                if alpha:
                    self.alphabet_button_group.set_button(1, 5, numbers_button)
                if symbol:
                    self.symbols_button_group.set_button(1, 5, numbers_button)

            if symbol:
                symbols_button = Button(_('Symbls'), self.change_button_group,
                                        self.symbols_button_group)
                if alpha:
                    self.alphabet_button_group.set_button(2, 5, symbols_button)
                if numeric:
                    self.numbers_button_group.set_button(2, 5, symbols_button)

        if alpha:
            self.button_group = self.alphabet_button_group
        elif numeric:
            self.button_group = self.numbers_button_group
        elif symbol:
            self.button_group = self.symbols_button_group

    def show(self, menuw):
        """
        Display the Text Entry Screen.
        This places the screen on the top of the menu stack.
        """
        self.menuw = menuw
        menuw.pushmenu(self)

    def refresh(self):
        """
        Redraw the screen.
        """
        if self.menuw.children:
            return
        skin_object.draw('textentry', self)

    def eventhandler(self, event, menuw=None):
        """
        Event handler to handle button navigation and selection.
        """
        event_consumed = False
        redraw = False

        if event is MENU_SELECT:
            self.button_group.selected_button.select()
            event_consumed = True

        elif event in (MENU_LEFT, MENU_RIGHT, MENU_DOWN, MENU_UP):
            if event is MENU_LEFT:
                redraw = self.button_group.move_left()
            elif event is MENU_RIGHT:
                redraw = self.button_group.move_right()
            elif event is MENU_DOWN:
                redraw = self.button_group.move_down()
            elif event is MENU_UP:
                redraw = self.button_group.move_up()
            event_consumed = True

        if redraw:
            self.refresh()

        return event_consumed

    def insert_key(self, arg):
        """
        Button action to insert a character.
        """
        self.text_entry.insert_char_at_caret(arg)
        self.refresh()

    def move_caret(self, arg):
        """
        Button action to move the caret.
        """
        if arg == 'left':
            self.text_entry.caret_left()
        elif arg == 'right':
            self.text_entry.caret_right()
        self.refresh()

    def delete_char(self, arg):
        """
        Button action to delete a character.
        """
        self.text_entry.delete_char_at_caret()
        self.refresh()

    def change_button_group(self, arg):
        """
        Button action to switch to a different button group.
        """
        self.button_group = arg
        self.button_group.set_selected(self.button_group.buttons[0][0])
        self.refresh()

    def activate_action(self, arg):
        """
        Button action to call the user supplied handler.
        """
        arg(self.menuw, self.text_entry.text)

    def __init_keyboard_buttons(self, keys, button_group):
        """
        Initialise a button group by spliting the keys argument into
        characters and add each to the button group as a button.
        """
        r = 0
        c = 0
        for key in keys:
            if key == ' ':
                text = _('Space')
            else:
                text = key
            button_group.set_button(r, c, Button(text, self.insert_key, key))
            c += 1
            if c == 5:
                r += 1
                c = 0
        # Add common buttons to the group
        column = button_group.columns - 1
        button_group.set_button(0, column, self.action_button)
        button_group.set_button(1, column, self.left_button)
        button_group.set_button(2, column, self.right_button)
        button_group.set_button(3, column, self.delete_button)

    def getattr(self, attr):
        """
        Used by the skin to retrieve named details about this object.
        """
        return getattr(self, attr, u'')
Пример #3
0
    def __init__(self, action, title, text="", alpha=True, numeric=True, symbol=True):
        """
        Used to display and control the

        @param actions: Tuple containing a name and an action function that will be called
                  with the menu widget and the contents of the text entry field when
                  selected.
        @param title:   The title to display at the top of the screen.
        @param text:    Initial text for the text entry field.
        @param alpha:   Whether to display the alphabet character board
        @param numeric: Whether to display the number character board.
        @param symbol:  Whether to display the symbol character board.
        """
        self.title = title
        self.text_entry = TextEntry(text)

        # Create common buttons
        self.action_button = Button(action[0], self.activate_action, action[1])
        self.left_button = Button(_("Left"), self.move_caret, "left")
        self.right_button = Button(_("Right"), self.move_caret, "right")
        self.delete_button = Button(_("Delete"), self.delete_char, None)

        # Make sure at least one character board is enabled.
        if not (alpha or numeric or symbol):
            # raise RuntimeError, 'At least one character board should be enabled!'

            return

        # Work out whether we need a column to select different character boards.
        if (
            (alpha and not numeric and not symbol)
            or (not alpha and numeric and not symbol)
            or (not alpha and not numeric and symbol)
        ):
            columns = 6
        else:
            columns = 7

        #
        # Create button groups for alphabet/numbers/symbols
        #
        if alpha:
            self.alphabet_button_group = ButtonGroup(6, columns)
            keys = _("ABCDEFGHIJKLMNOPQRSTUVWXYZ ")
            self.__init_keyboard_buttons(keys, self.alphabet_button_group)
            self.lower_alphabet_button_group = ButtonGroup(6, columns)
            keys = _("abcdefghijklmnopqrstuvwxyz ")
            self.__init_keyboard_buttons(keys, self.lower_alphabet_button_group)

        if numeric:
            self.numbers_button_group = ButtonGroup(6, columns)
            keys = _("1234567890")
            self.__init_keyboard_buttons(keys, self.numbers_button_group)

        if symbol:
            self.symbols_button_group = ButtonGroup(6, columns)
            keys = _("!\"#$%^&*();:'@~?,.<>-=+\[]{}")
            self.__init_keyboard_buttons(keys, self.symbols_button_group)

        # If more than 1 character board is selected add the buttons to switch
        # between them.
        if (alpha and numeric) or (alpha and symbol) or (numeric and symbol):
            if alpha:
                lowercase_button = Button(_("abc"), self.change_button_group, self.lower_alphabet_button_group)
                self.alphabet_button_group.set_button(1, 5, lowercase_button)

                characters_button = Button(_("ABC"), self.change_button_group, self.alphabet_button_group)

                self.lower_alphabet_button_group.set_button(0, 5, characters_button)
                if numeric:
                    self.numbers_button_group.set_button(0, 5, characters_button)
                    self.numbers_button_group.set_button(1, 5, lowercase_button)

                if symbol:
                    self.symbols_button_group.set_button(0, 5, characters_button)
                    self.symbols_button_group.set_button(1, 5, lowercase_button)

            if numeric:
                numbers_button = Button(_("123"), self.change_button_group, self.numbers_button_group)
                if alpha:
                    self.alphabet_button_group.set_button(2, 5, numbers_button)
                    self.lower_alphabet_button_group.set_button(2, 5, numbers_button)

                if symbol:
                    self.symbols_button_group.set_button(2, 5, numbers_button)

            if symbol:
                symbols_button = Button(_("Symbls"), self.change_button_group, self.symbols_button_group)
                if alpha:
                    self.alphabet_button_group.set_button(3, 5, symbols_button)
                    self.lower_alphabet_button_group.set_button(3, 5, symbols_button)

                if numeric:
                    self.numbers_button_group.set_button(3, 5, symbols_button)

        if alpha:
            self.button_group = self.alphabet_button_group
        elif numeric:
            self.button_group = self.numbers_button_group
        elif symbol:
            self.button_group = self.symbols_button_group

        self.last_key = None
        self.last_key_press = 0
Пример #4
0
class TextEntryScreen:
    def __init__(self,
                 action,
                 title,
                 text='',
                 alpha=True,
                 numeric=True,
                 symbol=True):
        """
        Used to display and control the

        @param actions: Tuple containing a name and an action function that will be called
                  with the menu widget and the contents of the text entry field when
                  selected.
        @param title:   The title to display at the top of the screen.
        @param text:    Initial text for the text entry field.
        @param alpha:   Whether to display the alphabet character board
        @param numeric: Whether to display the number character board.
        @param symbol:  Whether to display the symbol character board.
        """
        self.title = title
        self.text_entry = TextEntry(text)

        # Create common buttons
        self.action_button = Button(action[0], self.activate_action, action[1])
        self.left_button = Button(_('Left'), self.move_caret, 'left')
        self.right_button = Button(_('Right'), self.move_caret, 'right')
        self.delete_button = Button(_('Delete'), self.delete_char, None)

        # Make sure at least one character board is enabled.
        if not (alpha or numeric or symbol):
            # raise RuntimeError, 'At least one character board should be enabled!'

            return

        # Work out whether we need a column to select different character boards.
        if (alpha and not numeric and not symbol) or \
           (not alpha and numeric and not symbol) or \
           (not alpha and not numeric and symbol):
            columns = 6
        else:
            columns = 7

        #
        # Create button groups for alphabet/numbers/symbols
        #
        if alpha:
            self.alphabet_button_group = ButtonGroup(6, columns)
            keys = _('ABCDEFGHIJKLMNOPQRSTUVWXYZ ')
            self.__init_keyboard_buttons(keys, self.alphabet_button_group)
            self.lower_alphabet_button_group = ButtonGroup(6, columns)
            keys = _('abcdefghijklmnopqrstuvwxyz ')
            self.__init_keyboard_buttons(keys,
                                         self.lower_alphabet_button_group)

        if numeric:
            self.numbers_button_group = ButtonGroup(6, columns)
            keys = _('1234567890')
            self.__init_keyboard_buttons(keys, self.numbers_button_group)

        if symbol:
            self.symbols_button_group = ButtonGroup(6, columns)
            keys = _('!"#$%^&*();:\'@~?,.<>-=+\[]{}')
            self.__init_keyboard_buttons(keys, self.symbols_button_group)

        # If more than 1 character board is selected add the buttons to switch
        # between them.
        if (alpha and numeric) or (alpha and symbol) or (numeric and symbol):
            if alpha:
                lowercase_button = Button(_('abc'), self.change_button_group,
                                          self.lower_alphabet_button_group)
                self.alphabet_button_group.set_button(1, 5, lowercase_button)

                characters_button = Button(_('ABC'), self.change_button_group,
                                           self.alphabet_button_group)

                self.lower_alphabet_button_group.set_button(
                    0, 5, characters_button)
                if numeric:
                    self.numbers_button_group.set_button(
                        0, 5, characters_button)
                    self.numbers_button_group.set_button(
                        1, 5, lowercase_button)

                if symbol:
                    self.symbols_button_group.set_button(
                        0, 5, characters_button)
                    self.symbols_button_group.set_button(
                        1, 5, lowercase_button)

            if numeric:
                numbers_button = Button(_('123'), self.change_button_group,
                                        self.numbers_button_group)
                if alpha:
                    self.alphabet_button_group.set_button(2, 5, numbers_button)
                    self.lower_alphabet_button_group.set_button(
                        2, 5, numbers_button)

                if symbol:
                    self.symbols_button_group.set_button(2, 5, numbers_button)

            if symbol:
                symbols_button = Button(_('Symbls'), self.change_button_group,
                                        self.symbols_button_group)
                if alpha:
                    self.alphabet_button_group.set_button(3, 5, symbols_button)
                    self.lower_alphabet_button_group.set_button(
                        3, 5, symbols_button)

                if numeric:
                    self.numbers_button_group.set_button(3, 5, symbols_button)

        if alpha:
            self.button_group = self.alphabet_button_group
        elif numeric:
            self.button_group = self.numbers_button_group
        elif symbol:
            self.button_group = self.symbols_button_group

        self.last_key = None
        self.last_key_press = 0

    def show(self, menuw):
        """
        Display the Text Entry Screen.
        This places the screen on the top of the menu stack.
        """
        self.menuw = menuw
        self.transition = skin.TRANSITION_IN
        menuw.pushmenu(self)
        self.transition = False

    def refresh(self):
        """
        Redraw the screen.
        """
        if self.menuw.children:
            return
        skin_object.draw('textentry', self, transition=self.transition)

    def eventhandler(self, event, menuw=None):
        """
        Event handler to handle button navigation and selection.
        """
        event_consumed = False
        redraw = False

        if event is MENU_SELECT:
            self.button_group.selected_button.select()
            event_consumed = True
            self.last_key = None

        elif event in (MENU_LEFT, MENU_RIGHT, MENU_DOWN, MENU_UP):
            if event is MENU_LEFT:
                redraw = self.button_group.move_left()
            elif event is MENU_RIGHT:
                redraw = self.button_group.move_right()
            elif event is MENU_DOWN:
                redraw = self.button_group.move_down()
            elif event is MENU_UP:
                redraw = self.button_group.move_up()
            event_consumed = True
            self.last_key = None

        elif event == BUTTON:
            if event.arg == '*':
                self.modify_char()
                self.last_key = None
                self.last_key_press = time.time()
                event_consumed = True
            else:
                n = -1
                try:
                    n = int(event.arg)
                except:
                    pass
                if n >= 0 and n <= 9:
                    now = time.time()

                    if self.last_key == event.arg and \
                        (now - self.last_key_press) < key_press_timeout:
                        self.modify_char()
                    else:
                        new_ch = number_chars[n][0]
                        # New key press
                        if self.button_group == self.lower_alphabet_button_group:
                            new_ch = new_ch.lower()
                        self.set_selected_button(new_ch)
                        self.insert_char(new_ch)

                    self.last_key = event.arg
                    self.last_key_press = now
                    event_consumed = True

        if redraw:
            self.refresh()

        return event_consumed

    def insert_char(self, arg):
        """
        Button action to insert a character.
        """
        self.text_entry.insert_char_at_caret(arg)
        self.refresh()

    def modify_char(self):
        """
        Modify the current character to be the next character in the number_char
        entry string for the last key pressed.
        """
        ch = self.text_entry.get_char_at_caret()
        new_ch = None
        for number_group in number_chars:
            i = number_group.find(ch)
            if i != -1:
                i += 1
                if i >= len(number_group):
                    i = 0
                new_ch = number_group[i]
                break

        if new_ch is not None:
            if self.button_group == self.lower_alphabet_button_group:
                new_ch = new_ch.lower()
            self.set_selected_button(new_ch)
            self.text_entry.replace_char_at_caret(new_ch)
            self.refresh()

    def move_caret(self, arg):
        """
        Button action to move the caret.
        """
        if arg == 'left':
            self.text_entry.caret_left()
        elif arg == 'right':
            self.text_entry.caret_right()
        self.refresh()

    def delete_char(self, arg):
        """
        Button action to delete a character.
        """
        self.text_entry.delete_char_at_caret()
        self.refresh()

    def change_button_group(self, arg):
        """
        Button action to switch to a different button group.
        """
        self.button_group = arg
        self.button_group.set_selected(self.button_group.buttons[0][0])
        self.refresh()

    def activate_action(self, arg):
        """
        Button action to call the user supplied handler.
        """
        arg(self.menuw, self.text_entry.text)

    def __init_keyboard_buttons(self, keys, button_group):
        """
        Initialise a button group by spliting the keys argument into
        characters and add each to the button group as a button.
        """
        r = 0
        c = 0
        for key in keys:
            if key == ' ':
                text = _('Space')
            else:
                text = key
            button_group.set_button(r, c, Button(text, self.insert_char, key))
            c += 1
            if c == 5:
                r += 1
                c = 0
        # Add common buttons to the group
        column = button_group.columns - 1
        button_group.set_button(0, column, self.action_button)
        button_group.set_button(1, column, self.left_button)
        button_group.set_button(2, column, self.right_button)
        button_group.set_button(3, column, self.delete_button)

    def getattr(self, attr):
        """
        Used by the skin to retrieve named details about this object.
        """
        return getattr(self, attr, u'')

    def set_selected_button(self, char):
        """
        Set the selected button based on the specified character.
        """
        for row in self.button_group.buttons:
            for btn in row:

                if btn and btn.text == char:
                    self.button_group.set_selected(btn)
                    break
Пример #5
0
class TextEntryScreen:
    def __init__(self, action, title, text="", alpha=True, numeric=True, symbol=True):
        """
        Used to display and control the

        @param actions: Tuple containing a name and an action function that will be called
                  with the menu widget and the contents of the text entry field when
                  selected.
        @param title:   The title to display at the top of the screen.
        @param text:    Initial text for the text entry field.
        @param alpha:   Whether to display the alphabet character board
        @param numeric: Whether to display the number character board.
        @param symbol:  Whether to display the symbol character board.
        """
        self.title = title
        self.text_entry = TextEntry(text)

        # Create common buttons
        self.action_button = Button(action[0], self.activate_action, action[1])
        self.left_button = Button(_("Left"), self.move_caret, "left")
        self.right_button = Button(_("Right"), self.move_caret, "right")
        self.delete_button = Button(_("Delete"), self.delete_char, None)

        # Make sure at least one character board is enabled.
        if not (alpha or numeric or symbol):
            # raise RuntimeError, 'At least one character board should be enabled!'

            return

        # Work out whether we need a column to select different character boards.
        if (
            (alpha and not numeric and not symbol)
            or (not alpha and numeric and not symbol)
            or (not alpha and not numeric and symbol)
        ):
            columns = 6
        else:
            columns = 7

        #
        # Create button groups for alphabet/numbers/symbols
        #
        if alpha:
            self.alphabet_button_group = ButtonGroup(6, columns)
            keys = _("ABCDEFGHIJKLMNOPQRSTUVWXYZ ")
            self.__init_keyboard_buttons(keys, self.alphabet_button_group)
            self.lower_alphabet_button_group = ButtonGroup(6, columns)
            keys = _("abcdefghijklmnopqrstuvwxyz ")
            self.__init_keyboard_buttons(keys, self.lower_alphabet_button_group)

        if numeric:
            self.numbers_button_group = ButtonGroup(6, columns)
            keys = _("1234567890")
            self.__init_keyboard_buttons(keys, self.numbers_button_group)

        if symbol:
            self.symbols_button_group = ButtonGroup(6, columns)
            keys = _("!\"#$%^&*();:'@~?,.<>-=+\[]{}")
            self.__init_keyboard_buttons(keys, self.symbols_button_group)

        # If more than 1 character board is selected add the buttons to switch
        # between them.
        if (alpha and numeric) or (alpha and symbol) or (numeric and symbol):
            if alpha:
                lowercase_button = Button(_("abc"), self.change_button_group, self.lower_alphabet_button_group)
                self.alphabet_button_group.set_button(1, 5, lowercase_button)

                characters_button = Button(_("ABC"), self.change_button_group, self.alphabet_button_group)

                self.lower_alphabet_button_group.set_button(0, 5, characters_button)
                if numeric:
                    self.numbers_button_group.set_button(0, 5, characters_button)
                    self.numbers_button_group.set_button(1, 5, lowercase_button)

                if symbol:
                    self.symbols_button_group.set_button(0, 5, characters_button)
                    self.symbols_button_group.set_button(1, 5, lowercase_button)

            if numeric:
                numbers_button = Button(_("123"), self.change_button_group, self.numbers_button_group)
                if alpha:
                    self.alphabet_button_group.set_button(2, 5, numbers_button)
                    self.lower_alphabet_button_group.set_button(2, 5, numbers_button)

                if symbol:
                    self.symbols_button_group.set_button(2, 5, numbers_button)

            if symbol:
                symbols_button = Button(_("Symbls"), self.change_button_group, self.symbols_button_group)
                if alpha:
                    self.alphabet_button_group.set_button(3, 5, symbols_button)
                    self.lower_alphabet_button_group.set_button(3, 5, symbols_button)

                if numeric:
                    self.numbers_button_group.set_button(3, 5, symbols_button)

        if alpha:
            self.button_group = self.alphabet_button_group
        elif numeric:
            self.button_group = self.numbers_button_group
        elif symbol:
            self.button_group = self.symbols_button_group

        self.last_key = None
        self.last_key_press = 0

    def show(self, menuw):
        """
        Display the Text Entry Screen.
        This places the screen on the top of the menu stack.
        """
        self.menuw = menuw
        self.transition = skin.TRANSITION_IN
        menuw.pushmenu(self)
        self.transition = False

    def refresh(self):
        """
        Redraw the screen.
        """
        if self.menuw.children:
            return
        skin_object.draw("textentry", self, transition=self.transition)

    def eventhandler(self, event, menuw=None):
        """
        Event handler to handle button navigation and selection.
        """
        event_consumed = False
        redraw = False

        if event is MENU_SELECT:
            self.button_group.selected_button.select()
            event_consumed = True
            self.last_key = None

        elif event in (MENU_LEFT, MENU_RIGHT, MENU_DOWN, MENU_UP):
            if event is MENU_LEFT:
                redraw = self.button_group.move_left()
            elif event is MENU_RIGHT:
                redraw = self.button_group.move_right()
            elif event is MENU_DOWN:
                redraw = self.button_group.move_down()
            elif event is MENU_UP:
                redraw = self.button_group.move_up()
            event_consumed = True
            self.last_key = None

        elif event == BUTTON:
            if event.arg == "*":
                self.modify_char()
                self.last_key = None
                self.last_key_press = time.time()
                event_consumed = True
            else:
                n = -1
                try:
                    n = int(event.arg)
                except:
                    pass
                if n >= 0 and n <= 9:
                    now = time.time()

                    if self.last_key == event.arg and (now - self.last_key_press) < key_press_timeout:
                        self.modify_char()
                    else:
                        new_ch = number_chars[n][0]
                        # New key press
                        if self.button_group == self.lower_alphabet_button_group:
                            new_ch = new_ch.lower()
                        self.set_selected_button(new_ch)
                        self.insert_char(new_ch)

                    self.last_key = event.arg
                    self.last_key_press = now
                    event_consumed = True

        if redraw:
            self.refresh()

        return event_consumed

    def insert_char(self, arg):
        """
        Button action to insert a character.
        """
        self.text_entry.insert_char_at_caret(arg)
        self.refresh()

    def modify_char(self):
        """
        Modify the current character to be the next character in the number_char
        entry string for the last key pressed.
        """
        ch = self.text_entry.get_char_at_caret()
        new_ch = None
        for number_group in number_chars:
            i = number_group.find(ch)
            if i != -1:
                i += 1
                if i >= len(number_group):
                    i = 0
                new_ch = number_group[i]
                break

        if new_ch is not None:
            if self.button_group == self.lower_alphabet_button_group:
                new_ch = new_ch.lower()
            self.set_selected_button(new_ch)
            self.text_entry.replace_char_at_caret(new_ch)
            self.refresh()

    def move_caret(self, arg):
        """
        Button action to move the caret.
        """
        if arg == "left":
            self.text_entry.caret_left()
        elif arg == "right":
            self.text_entry.caret_right()
        self.refresh()

    def delete_char(self, arg):
        """
        Button action to delete a character.
        """
        self.text_entry.delete_char_at_caret()
        self.refresh()

    def change_button_group(self, arg):
        """
        Button action to switch to a different button group.
        """
        self.button_group = arg
        self.button_group.set_selected(self.button_group.buttons[0][0])
        self.refresh()

    def activate_action(self, arg):
        """
        Button action to call the user supplied handler.
        """
        arg(self.menuw, self.text_entry.text)

    def __init_keyboard_buttons(self, keys, button_group):
        """
        Initialise a button group by spliting the keys argument into
        characters and add each to the button group as a button.
        """
        r = 0
        c = 0
        for key in keys:
            if key == " ":
                text = _("Space")
            else:
                text = key
            button_group.set_button(r, c, Button(text, self.insert_char, key))
            c += 1
            if c == 5:
                r += 1
                c = 0
        # Add common buttons to the group
        column = button_group.columns - 1
        button_group.set_button(0, column, self.action_button)
        button_group.set_button(1, column, self.left_button)
        button_group.set_button(2, column, self.right_button)
        button_group.set_button(3, column, self.delete_button)

    def getattr(self, attr):
        """
        Used by the skin to retrieve named details about this object.
        """
        return getattr(self, attr, u"")

    def set_selected_button(self, char):
        """
        Set the selected button based on the specified character.
        """
        for row in self.button_group.buttons:
            for btn in row:

                if btn and btn.text == char:
                    self.button_group.set_selected(btn)
                    break