- ContentSubPanel* _video_panel;
- AudioPanel* _audio_panel;
- CaptionPanel* _caption_panel[CAPTION_COUNT];
- ContentSubPanel* _timing_panel;
- std::list<ContentSubPanel *> _panels;
+ VideoPanel* _video_panel = nullptr;
+ AudioPanel* _audio_panel = nullptr;
+ EnumIndexedVector<TextPanel*, TextType> _text_panel;
+ TimingPanel* _timing_panel;