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nav.py
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93 lines (78 loc) · 3.32 KB
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# pyromod - A monkeypatcher add-on for Pyrogram
# Copyright (C) 2020-2021 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