2018-03-13 07:56:13 +00:00
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# Copyright 2017 Canonical, Ltd.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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2022-12-07 01:19:27 +00:00
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import asyncio
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2018-03-13 07:56:13 +00:00
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from urwid import Text
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styles = {
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"dots": {
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2018-05-24 19:02:23 +00:00
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"texts": [
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t.replace("*", "\N{bullet}")
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for t in [
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"|*----|",
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"|-*---|",
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"|--*--|",
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"|---*-|",
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"|----*|",
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"|---*-|",
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2023-07-25 21:26:25 +00:00
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"|--*--|",
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"|-*---|",
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]
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2018-05-24 19:02:23 +00:00
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],
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2018-03-13 07:56:13 +00:00
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"rate": 0.2,
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},
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"spin": {
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"texts": ["-", "\\", "|", "/"],
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"rate": 0.1,
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},
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}
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2018-05-24 19:02:23 +00:00
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2018-03-13 07:56:13 +00:00
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class Spinner(Text):
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def __init__(self, style="spin", align="center"):
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2018-03-13 07:56:13 +00:00
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self.spin_index = 0
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self.spin_text = styles[style]["texts"]
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self.rate = styles[style]["rate"]
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super().__init__("", align=align)
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2022-12-07 01:19:27 +00:00
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self._spin_task = None
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2018-03-13 07:56:13 +00:00
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2019-03-07 23:08:02 +00:00
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def spin(self):
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2018-05-24 19:02:23 +00:00
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self.spin_index = (self.spin_index + 1) % len(self.spin_text)
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2018-03-13 07:56:13 +00:00
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self.set_text(self.spin_text[self.spin_index])
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2019-03-07 23:08:02 +00:00
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2022-12-07 01:19:27 +00:00
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async def _spin(self):
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while True:
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self.spin()
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await asyncio.sleep(self.rate)
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2018-03-13 07:56:13 +00:00
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def start(self):
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self.stop()
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2022-12-07 01:19:27 +00:00
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self._spin_task = asyncio.create_task(self._spin())
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2018-03-13 07:56:13 +00:00
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def stop(self):
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self.set_text("")
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2022-12-07 01:19:27 +00:00
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if self._spin_task is not None:
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self._spin_task.cancel()
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self._spin_task = None
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