mirror of
https://github.com/LorenEteval/Furious.git
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56 lines
1.8 KiB
Python
56 lines
1.8 KiB
Python
# Copyright (C) 2024 Loren Eteval <loren.eteval@proton.me>
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#
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# This file is part of Furious.
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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 General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (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 General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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from __future__ import annotations
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from typing import Any, Sequence
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__all__ = ['ItemUpdateProtocol']
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class ItemUpdateProtocol:
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def __init__(self, sequence: Sequence, currentIndex: int, currentItem: Any):
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self.sequence = sequence
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self.currentIndex = currentIndex
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self.currentItem = currentItem
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def currentItemDeleted(self, *args, **kwargs) -> bool:
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return self.currentIndex < 0 or self.currentIndex >= len(self.sequence)
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def updateImpl(self, *args, **kwargs):
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raise NotImplementedError
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def updateResult(self):
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if self.currentItemDeleted():
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# Deleted. Do nothing
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return
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if id(self.sequence[self.currentIndex]) == id(self.currentItem):
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self.updateImpl()
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else:
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# Linear find and update
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for index, item in enumerate(self.sequence):
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if id(item) == id(self.currentItem):
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# Found. Update index
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self.currentIndex = index
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self.updateImpl()
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# Updated
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break
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# Not found. Do nothing
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