PagerMaid-Pyro/pyromod/nav/pagination.py
2022-06-26 20:59:36 +08:00

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"""
pyromod - A monkeypatcher add-on for Pyrogram
Copyright (C) 2020 Cezar H. <https://github.com/usernein>
This file is part of pyromod.
pyromod is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
pyromod is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pyromod. If not, see <https://www.gnu.org/licenses/>.
"""
import math
from ..helpers import array_chunk
class Pagination:
def __init__(self, objects, page_data=None, item_data=None, item_title=None):
default_page_callback = (lambda x: str(x))
default_item_callback = (lambda i, pg: f'[{pg}] {i}')
self.objects = objects
self.page_data = page_data or default_page_callback
self.item_data = item_data or default_item_callback
self.item_title = item_title or default_item_callback
def create(self, page, lines=5, columns=1):
quant_per_page = lines * columns
page = 1 if page <= 0 else page
offset = (page - 1) * quant_per_page
stop = offset + quant_per_page
cutted = self.objects[offset:stop]
total = len(self.objects)
pages_range = [*range(1, math.ceil(total / quant_per_page) + 1)] # each item is a page
last_page = len(pages_range)
nav = []
if page <= 3:
for n in [1, 2, 3]:
if n not in pages_range:
continue
text = f"· {n} ·" if n == page else n
nav.append((text, self.page_data(n)))
if last_page >= 4:
nav.append(
('4 ' if last_page > 5 else 4, self.page_data(4))
)
if last_page > 4:
nav.append(
(f'{last_page} »' if last_page > 5 else last_page, self.page_data(last_page))
)
elif page >= last_page - 2:
nav.extend(
[
('« 1' if last_page > 5 else 1, self.page_data(1)),
(
f' {last_page - 3}' if last_page > 5 else last_page - 3,
self.page_data(last_page - 3),
),
]
)
for n in range(last_page - 2, last_page + 1):
text = f"· {n} ·" if n == page else n
nav.append((text, self.page_data(n)))
else:
nav = [
('« 1', self.page_data(1)),
(f' {page - 1}', self.page_data(page - 1)),
(f'· {page} ·', "noop"),
(f'{page + 1} ', self.page_data(page + 1)),
(f'{last_page} »', self.page_data(last_page)),
]
buttons = [
(self.item_title(item, page), self.item_data(item, page))
for item in cutted
]
kb_lines = array_chunk(buttons, columns)
if last_page > 1:
kb_lines.append(nav)
return kb_lines