comparison layer/WaveformLayer.h @ 947:e53a87a5efb2

Allow layers to be loaded without models if their layer class explicitly says it's OK (otherwise default template won't load, as it has an empty waveform layer)

 
     virtual int getVerticalZoomSteps(int &defaultStep) const;
     virtual int getCurrentVerticalZoomStep() const;
     virtual void setVerticalZoomStep(int);
 
+    virtual bool canExistWithoutModel() const { return true; }
+
 protected:
     int dBscale(double sample, int m) const;
 
     const RangeSummarisableTimeValueModel *m_model; // I do not own this