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How to use scroll_top method in elementium

Best Python code snippet using elementium_python

pick.py

Source:pick.py

1# -*-coding:utf-8-*-2import curses3__all__ = ['Picker', 'pick']4KEYS_ENTER = (curses.KEY_ENTER, ord ('\n'), ord ('\r'))5KEYS_UP = (curses.KEY_UP, ord ('k'))6KEYS_DOWN = (curses.KEY_DOWN, ord ('j'))7KEYS_SELECT = (curses.KEY_RIGHT, ord (' '))8class Picker (object):9    """The :class:`Picker <Picker>` object10    :param options: a list of options to choose from11    :param title: (optional) a title above options list12    :param multi_select: (optional) if true its possible to select multiple values by hitting SPACE, defaults to False13    :param indicator: (optional) custom the selection indicator14    :param default_index: (optional) set this if the default selected option is not the first one15    """16    def __init__(self, options, title=None, indicator='*', default_index=0, multi_select=False, min_selection_count=0):17        if len (options) == 0:18            raise ValueError ('options should not be an empty list')19        self.options = options20        self.title = title21        self.indicator = indicator22        self.multi_select = multi_select23        self.min_selection_count = min_selection_count24        self.all_selected = []25        if default_index >= len (options):26            raise ValueError ('default_index should be less than the length of options')27        if multi_select and min_selection_count > len (options):28            raise ValueError (29                'min_selection_count is bigger than the available options, you will not be able to make any selection')30        self.index = default_index31        self.custom_handlers = {}32    def register_custom_handler(self, key, func):33        self.custom_handlers[key] = func34    def move_up(self):35        self.index -= 136        if self.index < 0:37            self.index = len (self.options) - 138    def move_down(self):39        self.index += 140        if self.index >= len (self.options):41            self.index = 042    def mark_index(self):43        if self.multi_select:44            if self.index in self.all_selected:45                self.all_selected.remove (self.index)46            else:47                self.all_selected.append (self.index)48    def get_selected(self):49        """return the current selected option as a tuple: (option, index)50           or as a list of tuples (in case multi_select==True)51        """52        if self.multi_select:53            return_tuples = []54            for selected in self.all_selected:55                return_tuples.append ((self.options[selected], selected))56            return return_tuples57        else:58            return self.options[self.index], self.index59    def get_title_lines(self):60        if self.title:61            return self.title.split ('\n') + ['']62        return []63    def get_option_lines(self):64        lines = []65        for index, option in enumerate (self.options):66            if index == self.index:67                prefix = self.indicator68            else:69                prefix = len (self.indicator) * ' '70            if self.multi_select and index in self.all_selected:71                format = curses.color_pair (1)72                line = ('{0} {1}'.format (prefix, option), format)73            else:74                line = '{0} {1}'.format (prefix, option)75            lines.append (line)76        return lines77    def get_lines(self):78        title_lines = self.get_title_lines ( )79        option_lines = self.get_option_lines ( )80        lines = title_lines + option_lines81        current_line = self.index + len (title_lines) + 182        return lines, current_line83    def draw(self):84        """draw the curses ui on the screen, handle scroll if needed"""85        self.screen.clear ( )86        x, y = 1, 1  # start point87        max_y, max_x = self.screen.getmaxyx ( )88        max_rows = max_y - y  # the max rows we can draw89        lines, current_line = self.get_lines ( )90        # calculate how many lines we should scroll, relative to the top91        scroll_top = getattr (self, 'scroll_top', 0)92        if current_line <= scroll_top:93            scroll_top = 094        elif current_line - scroll_top > max_rows:95            scroll_top = current_line - max_rows96        self.scroll_top = scroll_top97        lines_to_draw = lines[scroll_top:scroll_top + max_rows]98        for line in lines_to_draw:99            if type (line) is tuple:100                self.screen.addnstr (y, x, line[0], max_x - 2, line[1])101            else:102                self.screen.addnstr (y, x, line, max_x - 2)103            y += 1104        self.screen.refresh ( )105    def run_loop(self):106        while True:107            self.draw ( )108            c = self.screen.getch ( )109            if c in KEYS_UP:110                self.move_up ( )111            elif c in KEYS_DOWN:112                self.move_down ( )113            elif c in KEYS_ENTER:114                if self.multi_select and len (self.all_selected) < self.min_selection_count:115                    continue116                return self.get_selected ( )117            elif c in KEYS_SELECT and self.multi_select:118                self.mark_index ( )119            elif c in self.custom_handlers:120                ret = self.custom_handlers[c] (self)121                if ret:122                    return ret123    def config_curses(self):124        # use the default colors of the terminal125        curses.use_default_colors ( )126        # hide the cursor127        curses.curs_set (0)128        # add some color for multi_select129        # @todo make colors configurable130        curses.init_pair (1, curses.COLOR_GREEN, curses.COLOR_WHITE)131    def _start(self, screen):132        self.screen = screen133        self.config_curses ( )134        return self.run_loop ( )135    def start(self):136        return curses.wrapper (self._start)137def pick(options, title=None, indicator='*', default_index=0, multi_select=False, min_selection_count=0):138    """Construct and start a :class:`Picker <Picker>`.139    Usage::140      >>> from pick import pick141      >>> title = 'Please choose an option: '142      >>> options = ['option1', 'option2', 'option3']143      >>> option, index = pick(options, title)144    """145    picker = Picker (options, title, indicator, default_index, multi_select, min_selection_count)...

Picker.py

Source:Picker.py

1# -*-coding:utf-8-*-2"""3Class defining list picker using curses4Original repo - https://github.com/wong2/pick5Deleted multiselect, simplified and reformatted code6Formatted title in bold7"""8import curses9KEYS_UP = (curses.KEY_UP, ord("k"))10KEYS_DOWN = (curses.KEY_DOWN, ord("j"))11KEYS_SELECT = (curses.KEY_RIGHT, ord(" "), curses.KEY_ENTER, ord("\n"), ord("\r"))12class Picker(object):13    def __init__(self, title: str, options: list[str], indicator="->") -> None:14        if len(options) == 0:15            raise ValueError("Options must not be empty")16        self.title = title17        self.options = options18        self.indicator = indicator19        self.index = 020    def move_up(self) -> None:21        self.index = max(self.index - 1, 0)22    def move_down(self) -> None:23        self.index = min(self.index + 1, len(self.options) - 1)24    def get_selected(self) -> tuple[str, int]:25        return self.options[self.index], self.index26    def get_title_lines(self) -> list[str]:27        if self.title:28            return self.title.split("\n") + [""]29        return []30    def get_options_lines(self) -> list[str]:31        lines = []32        for index, option in enumerate(self.options):33            if index == self.index:34                prefix = self.indicator35            else:36                prefix = len(self.indicator) * " "37            line = prefix + " " + option38            lines.append(line)39        return lines40    def get_lines(self) -> tuple[list[str], int]:41        title_lines = self.get_title_lines()42        options_lines = self.get_options_lines()43        lines = title_lines + options_lines44        current_line = len(title_lines) + 1 + self.index45        return lines, current_line46    def draw(self) -> None:47        self.screen.clear()48        x, y = 1, 149        max_y, max_x = self.screen.getmaxyx()50        max_rows = max_y - y51        lines, cur_line = self.get_lines()52        scroll_top = getattr(self, "scroll_top", 0)53        if cur_line <= scroll_top:54            scroll_top = 055        elif cur_line - scroll_top > max_rows:56            scroll_top = cur_line - max_rows57        self.scroll_top = scroll_top58        lines_to_draw = lines[scroll_top : scroll_top + max_rows]59        title_is_bold_flag = False60        if scroll_top == 0:61            title_is_bold_flag = False62        else:63            title_is_bold_flag = True64        for line in lines_to_draw:65            if type(line) is tuple:66                self.screen.addnstr(y, x, line[0], max_x - 2, line[1])67            else:68                if not title_is_bold_flag:69                    self.screen.addnstr(y, x, line, max_x - 2, curses.A_BOLD)70                    title_is_bold_flag = True71                else:72                    self.screen.addnstr(y, x, line, max_x - 2)73            y += 174        self.screen.refresh()75    def run_loop(self):76        while True:77            self.draw()78            c = self.screen.getch()79            if c in KEYS_UP:80                self.move_up()81            elif c in KEYS_DOWN:82                self.move_down()83            elif c in KEYS_SELECT:84                return self.get_selected()85    def _start(self, screen):86        self.screen = screen87        curses.initscr()88        curses.curs_set(0)89        return self.run_loop()90    def start(self):...

base.py

Source:base.py

...32    """33    thumb_char = '\u2588'34    trough_char = '\u2502'35    @property36    def scroll_top(self):37        return getattr(self, '_scroll_top', 0)38    @scroll_top.setter39    def scroll_top(self, value):40        """41        The current scroll position from the top of the widget.42        This many lines will be trimmed from the top of the widget.43        """44        self._scroll_top = max(value, 0)45        self._invalidate()  # invalidate render cache46    def render(self, size, focus):47        maxcols, maxrows = size48        rows = self._original_widget.rows((maxcols,), focus)49        if rows <= maxrows:50            # no clipping, so just fill as normal51            return super().render(size, focus)52        # limit scroll_top to top of last page53        self.scroll_top = min(self.scroll_top, rows - maxrows)...

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