comparison layer/TimeRulerLayer.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 void toXml(QTextStream &stream, QString indent = "",
                        QString extraAttributes = "") const;
 
     void setProperties(const QXmlAttributes &attributes);
 
+    virtual bool canExistWithoutModel() const { return true; }
+
 protected:
     Model *m_model;
     LabelHeight m_labelHeight;
 
     virtual int getDefaultColourHint(bool dark, bool &impose);