Make SpecularDataItem::P_XAXIS private

GUI/coregui/Models/SpecularDataItem.cpp

@@ -158,6 +158,11 @@ void SpecularDataItem::reset(ImportDataInfo data)
     setAxesRangeToData();
 }
 
+bool SpecularDataItem::isXaxisPropertyName(const QString& name)
+{
+    return name == P_XAXIS;
+}
+
 void SpecularDataItem::setLowerX(double value)
 {
     xAxisItem()->setLowerBound(value);

GUI/coregui/Models/SpecularDataItem.h

@@ -28,9 +28,9 @@ const QString y_axis_default_name = "Signal [a.u.]";
 class BA_CORE_API_ SpecularDataItem : public DataItem {
 private:
     static const QString P_TITLE;
+    static const QString P_XAXIS;
 
 public:
-    static const QString P_XAXIS;
     static const QString P_YAXIS;
 
     SpecularDataItem();
@@ -79,6 +79,8 @@ public:
     //! data.
     void reset(ImportDataInfo data) override;
 
+    static bool isXaxisPropertyName(const QString& name);
+                                            
 public slots:
     void setLowerX(double value);
     void setUpperX(double value);

GUI/coregui/Views/SpecularDataWidgets/SpecularPlot.cpp

@@ -257,7 +257,7 @@ void SpecularPlot::modifyAxesProperties(const QString& axisName, const QString&
         replot();
     }
 
-    if (axisName == SpecularDataItem::P_XAXIS) {
+    if (SpecularDataItem::isXaxisPropertyName(axisName)) {
         if (propertyName == BasicAxisItem::P_MIN_DEG || propertyName == BasicAxisItem::P_MAX_DEG) {
             setAxesRangeConnected(false);
             m_custom_plot->xAxis->setRange(specularItem()->getLowerX(),