def downloadChapters(self, manga, chapters):
# create an UpdateWindow
self.log.info('updateAll == Create update window')
update_window = UpdateWindow.createForChaptersDownload(self)
# sort chapters
chapters = sorted(chapters, key = lambda chapter : chapter.getChapterNumber())
# ask the mmachine to start the update
self.current_action = self.mmachine.do.downloadChapters(manga, chapters)
update_window.setAction(self.current_action)
# monitor the action
self.log.info('updateAll == Start timeout')
GObject.timeout_add(300, update_window.refresh)
