How to use the comiccrawler.mission_manager.mission_manager function in comiccrawler

def tvdrop():
				mission_manager.drop(name, *table.selected())

if download_manager.is_downloading():
				if not messagebox.askokcancel(
						"Comic Crawler",
						"任務下載中，確定結束？"):
					return
					
			# going to quit
			printer.remove_listener(self.sp_callback)		
		
			self.root.destroy()
			
			download_manager.stop_download()
			download_manager.stop_analyze()
			download_manager.stop_check_update()
			
			mission_manager.save()
			
			config.save()

def libDownloadUpdate():
			missions = mission_manager.get_by_state("library", ("UPDATE",), all=True)
			if not missions:
				messagebox.showerror("Comic Crawler", "沒有新更新的任務")
				return
			mission_manager.add("view", *missions)
			download_manager.start_download()
			self.notebook.select(0)
		self.btn_download_update["command"] = libDownloadUpdate

def _():
				mission_manager.drop(name, *table.selected())

def _(event):
			_err, mission = event.data
			mission_manager.drop("view", mission)

self.pool_index = {
			id(mission_manager.view): self.view_table,
			id(mission_manager.library): self.library_table
		}
		
		self.bindevent()
		
		self.register_listeners()
		
		printer.add_listener(self.sp_callback)

		if (setting.getboolean("libraryautocheck") and
			time() - setting.getfloat("lastcheckupdate", 0) > 24 * 60 * 60):
			download_manager.start_check_update()
			
		self.update_table(mission_manager.view)
		self.update_table(mission_manager.library)
		
		self.save()
		self.update()
		self.root.mainloop()

def __init__(self):
		"""Construct."""
		self.create_view()
		self.bind_event()
		
		self.thread = worker.current()
		self.loop = TkinterLoop(self.root, worker.update)

		self.pool_index = {
			id(mission_manager.view): self.view_table,
			id(mission_manager.library): self.library_table
		}
		
		self.register_listeners()
		
		printer.add_listener(self.sp_callback)

		if (setting.getboolean("libraryautocheck") and
			time() - setting.getfloat("lastcheckupdate", 0) > setting.getfloat("autocheck_interval") * 60 * 60):
			download_manager.start_check_update()
			
		self.update_table(mission_manager.view)
		self.update_table(mission_manager.library)
		
		self.save()
		self.loop.start()