Controller.py

from abc import ABCMeta
from tkinter.filedialog import askopenfilenames

import Model


class Controller:
    __metaclass__ = ABCMeta

    def __init__(self, view):
        self.view = view


class AppController(Controller):

    def __init__(self, view):
        super().__init__(view)
        self.view.play_button['command'] = Model.music_manager.play_reaction
        self.view.next_song_button['command'] = Model.music_manager.next
        self.view.previous_song_button['command'] = Model.music_manager.previous
        self.view.favourite_button['command'] = Model.music_manager.favourite
        self.view.delete_button['command'] = Model.music_manager.delete
        self.view.sound_bar.bind("<ButtonRelease-1>", self._set_volume)
        self.view.volume_button['command'] = Model.music_manager.silence
        self.view.menu.bind("<ButtonRelease-1>", self._switch_page_event)

    def _set_volume(self, event):
        Model.music_manager.set_volume(self.view.sound_bar.get())
        pass

    def _switch_page_event(self, event):
        Model.app_page_manager.switch_page(_get_selected_item(self.view.menu))


def _get_selected_item(tree):
    item = tree.selection()[0]
    return int(str(item)[1:]) - 1


class SongController(Controller):

    def __init__(self, view):
        super().__init__(view)
        self.view.add_music_button['command'] = self._file_dialog
        self.view.songs_tree.bind("<ButtonRelease-1>", self.tree_click_event)
        self.view.search_bar.bind("<KeyRelease>", self.search_bar_event)

    def _file_dialog(self):
        text_file_extensions = ['*.mp3', '*.flac', '*.ogg', '*.wma', '*.wav', '*.alac', '*.m4a', '*.aac']
        types = [('Music', text_file_extensions)]
        filenames = askopenfilenames(title='"pen', filetypes=types)
        for file in filenames:
            Model.music_manager.add_music(file.replace('/', '\\'))

    def tree_click_event(self, event):
        Model.music_manager.switch_shown_music(_get_selected_item(self.view.songs_tree))

    def search_bar_event(self, event):
        Model.music_manager.filter(self.view.search_bar_input.get())


class SettingsController(Controller):
    def __init__(self, view):
        super().__init__(view)
        self.view.language_button_ru['command'] = self._select_ru
        self.view.language_button_en['command'] = self._select_en

    def _select_ru(self):
        Model.switch_locale('ru')

    def _select_en(self):
        Model.switch_locale('en')