- int slotAddAudioTrack(int ix, QDomElement xml);
- int slotAddVideoTrack(int ix, QDomElement xml);
- void registerFunction(const QString & name, TrackPanelFunction * function);
- TrackPanelFunction *getApplicableFunction(DocumentTrack * panel, const QString & editMode, QMouseEvent * event);
+ int slotAddProjectTrack(int ix, QDomElement xml, bool locked);
+ DocClipBase *getMissingProducer(const QString id) const;