35 lines
1.0 KiB
Python
35 lines
1.0 KiB
Python
from typing import Union
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class PaginatedList:
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def __init__(self, data: list, page_size: int, current_page:int=0):
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self.data = data
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self.page_size = page_size
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self.current_page = current_page
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@property
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def divided_list(self):
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return [
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self.data[x : x + self.page_size]
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for x in range(0, len(self.data), self.page_size)
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]
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def get_page(self, page: int) -> Union[list, None]:
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if page < len(self.divided_list):
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return self.divided_list[page]
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return None
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def get_current_page(self) -> list:
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return self.get_page(self.current_page)
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def page_up(self) -> Union[list, None]:
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if self.current_page + 1 < len(self.divided_list):
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self.current_page += 1
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return self.get_page(self.current_page)
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return None
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def page_down(self) -> Union[list, None]:
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if self.current_page - 1 >= 0:
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self.current_page -= 1
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return self.get_page(self.current_page)
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return None
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