main.py

import wx
import glob
import eyed3


class EditDialog(wx.Dialog):
    def __init__(self, mp3):
        title = f'Редактирование {mp3.tag.title}'
        super().__init__(parent=None, title=title)
        self.mp3 = mp3
        self.main_sizer = wx.BoxSizer(wx.VERTICAL)

        self.title = wx.TextCtrl(
            self, value=self.mp3.tag.title
        )
        self.add_widgets('Название', self.title)

        self.artist = wx.TextCtrl(self, value=self.mp3.tag.artist)
        self.add_widgets('Артист', self.artist)

        self.album = wx.TextCtrl(self, value=self.mp3.tag.album)
        self.add_widgets('Альбом', self.album)

        btn_sizer = wx.BoxSizer()
        save_btn = wx.Button(self, label='Сохранить')
        save_btn.Bind(wx.EVT_BUTTON, self.on_save)

        btn_sizer.Add(save_btn, 0, wx.ALL, 5)
        btn_sizer.Add(wx.Button(
            self, label='Отменить', id=wx.ID_CANCEL), 0, wx.ALL, 5)
        self.main_sizer.Add(btn_sizer, 0, wx.CENTER)
        self.SetSizer(self.main_sizer)

    def add_widgets(self, label_text, text_ctrl):
        row_sizer = wx.BoxSizer(wx.HORIZONTAL)
        label = wx.StaticText(self, label=label_text, size=(50, -1))
        row_sizer.Add(label, 0, wx.ALL, 5)
        row_sizer.Add(text_ctrl, 1, wx.ALL | wx.EXPAND, 5)
        self.main_sizer.Add(row_sizer, 0, wx.EXPAND)

    def on_save(self, event):
        self.mp3.tag.artist = self.artist.GetValue()
        self.mp3.tag.album = self.album.GetValue()
        self.mp3.tag.title = self.title.GetValue()
        self.mp3.tag.save()
        self.Close()


class Mp3Panel(wx.Panel):
    def __init__(self, parent):
        super().__init__(parent)
        main_sizer = wx.BoxSizer(wx.VERTICAL)
        self.row_obj_dict = {}
        self.list_ctrl = wx.ListCtrl(
            self, size=(-1, 100),
            style=wx.LC_REPORT | wx.BORDER_SUNKEN
        )
        self.list_ctrl.InsertColumn(0, 'Название', width=200)
        self.list_ctrl.InsertColumn(1, 'Артист', width=140)
        self.list_ctrl.InsertColumn(2, 'Альбом', width=140)
        main_sizer.Add(self.list_ctrl, 0, wx.ALL | wx.EXPAND, 5)

        edit_button = wx.Button(self, label='Редактировать')
        edit_button.Bind(wx.EVT_BUTTON, self.on_edit)
        main_sizer.Add(edit_button, 0, wx.ALL | wx.CENTER, 5)
        self.SetSizer(main_sizer)

    def on_edit(self, event):
        selection = self.list_ctrl.GetFocusedItem()
        if selection >= 0:
            mp3 = self.row_obj_dict[selection]
            dialog = EditDialog(mp3)
            dialog.ShowModal()
            self.update_mp3_listing(self.current_folder_path)
            dialog.Destroy()

    def update_mp3_listing(self, folder_path):
        self.current_folder_path = folder_path
        self.list_ctrl.ClearAll()

        self.list_ctrl.InsertColumn(0, 'Название', width=200)
        self.list_ctrl.InsertColumn(1, 'Артист', width=140)
        self.list_ctrl.InsertColumn(2, 'Альбом', width=140)
        mp3s = glob.glob(folder_path + '/*.mp3')

        mp3_objects = []
        for index, mp3 in enumerate(mp3s):
            mp3_object = eyed3.load(mp3)
            self.list_ctrl.InsertItem(index, mp3_object.tag.title)
            self.list_ctrl.SetItem(index, 1, mp3_object.tag.artist)
            self.list_ctrl.SetItem(index, 2, mp3_object.tag.album)
            mp3_objects.append(mp3_object)
            self.row_obj_dict[index] = mp3_object


class Mp3Frame(wx.Frame):
    def __init__(self):
        super().__init__(parent=None, title='Редактор тегов песен.')
        self.panel = Mp3Panel(self)
        self.create_menu()

        # Показать фрейм
        self.Show()

    def create_menu(self):
        menu_bar = wx.MenuBar()
        file_menu = wx.Menu()
        open_folder_menu_item = file_menu.Append(
            wx.ID_ANY, 'Выбрать директорию',
            'Открыть папку с треками'
        )
        menu_bar.Append(file_menu, '&File')

        self.Bind(
            event=wx.EVT_MENU,
            handler=self.on_open_folder,
            source=open_folder_menu_item
        )
        self.SetMenuBar(menu_bar)

    def on_open_folder(self, event):
        title = 'Выберите директорию'
        dialog = wx.DirDialog(self, title, style=wx.DD_DEFAULT_STYLE)

        if dialog.ShowModal() == wx.ID_OK:
            self.panel.update_mp3_listing(dialog.GetPath())

        dialog.Destroy()


if __name__ == '__main__':
    # Инициализация приложения
    app = wx.App()
    # Собственный класс, унаследованный от библиотеки
    frame = Mp3Frame()
    # Цикл Событий - Event Loop
    app.MainLoop()