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"""This module defines a divider between widgets"""
from asciimatics.widgets.widget import Widget
class Divider(Widget):
"""
A divider to break up a group of widgets.
"""
__slots__ = ["_draw_line", "_required_height", "_line_char"]
def __init__(self, draw_line=True, height=1, line_char=None):
"""
:param draw_line: Whether to draw a line in the centre of the gap.
:param height: The required vertical gap.
:param line_char: Optional character to use for drawing the line.
"""
# Dividers have no value and so should have no name for look-ups either.
super().__init__(None, tab_stop=False)
self._draw_line = draw_line
self._required_height = height
self._line_char = line_char
def register_frame(self, frame):
# Update line drawing character if needed once we have a canvas to query.
super().register_frame(frame)
if self._line_char is None:
self._line_char = "─" if self._frame.canvas.unicode_aware else "-"
def process_event(self, event):
# Dividers have no user interactions
return event
def update(self, frame_no):
(colour, attr, background) = self._frame.palette["borders"]
if self._draw_line:
self._frame.canvas.print_at(self._line_char * self._w,
self._x,
self._y + (self._h // 2),
colour, attr, background)
def reset(self):
pass
def required_height(self, offset, width):
return self._required_height
@property
def value(self):
"""
The current value for this Divider.
"""
return self._value
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