advanced usage of callbackdata was added

examples/callback_data_examples/advanced_calendar_example/main.py

@@ -0,0 +1,56 @@
+# -*- coding: utf-8 -*-
+"""
+This Example will show you an advanced usage of CallbackData.
+In this example calendar was implemented
+"""
+
+from datetime import date
+
+from examples.callback_data_examples.advanced_calendar_example.keyboards import generate_calendar_days, \
+    generate_calendar_months, EMTPY_FIELD
+from filters import calendar_factory, calendar_zoom, bind_filters
+from telebot import types, TeleBot
+
+API_TOKEN = ''
+bot = TeleBot(API_TOKEN)
+
+
+@bot.message_handler(commands='start')
+def start_command_handler(message: types.Message):
+    bot.send_message(message.chat.id,
+                     f"Hello {message.from_user.first_name}. This bot is an example of calendar keyboard."
+                     "\nPress /calendar to see it.")
+
+
+@bot.message_handler(commands='calendar')
+def calendar_command_handler(message: types.Message):
+    now = date.today()
+    bot.send_message(message.chat.id, 'Calendar', reply_markup=generate_calendar_days(year=now.year, month=now.month))
+
+
+@bot.callback_query_handler(func=None, calendar_config=calendar_factory.filter())
+def calendar_action_handler(call: types.CallbackQuery):
+    callback_data: dict = calendar_factory.parse(callback_data=call.data)
+    year, month = int(callback_data['year']), int(callback_data['month'])
+
+    bot.edit_message_reply_markup(call.message.chat.id, call.message.id,
+                                  reply_markup=generate_calendar_days(year=year, month=month))
+
+
+@bot.callback_query_handler(func=None, calendar_zoom_config=calendar_zoom.filter())
+def calendar_zoom_out_handler(call: types.CallbackQuery):
+    callback_data: dict = calendar_zoom.parse(callback_data=call.data)
+    year = int(callback_data.get('year'))
+
+    bot.edit_message_reply_markup(call.message.chat.id, call.message.id,
+                                  reply_markup=generate_calendar_months(year=year))
+
+
+@bot.callback_query_handler(func=lambda call: call.data == EMTPY_FIELD)
+def callback_empty_field_handler(call: types.CallbackQuery):
+    bot.answer_callback_query(call.id)
+
+
+if __name__ == '__main__':
+    bind_filters(bot)
+    bot.infinity_polling()