def _setSubtitleTreeView(self) -> None:
"""
Sets the scrolled window and a tree view for subtitles info.
:return:
"""
self._subtitles_treeview = TreeView()
self._subtitles_treeview.set_grid_lines(TreeViewGridLines.BOTH)
scrl_wnd: ScrolledWindow = ScrolledWindow()
scrl_wnd.set_hexpand(True)
scrl_wnd.set_vexpand(True)
scrl_wnd.add(self._subtitles_treeview)
self._subtitles_grid.attach(scrl_wnd, 0, 1, 1, 1)
