Refs #9051. Functionality for retrieving selected policy

Code/Mantid/MantidQt/CustomInterfaces/inc/MantidQtCustomInterfaces/MuonAnalysis.h

@@ -237,15 +237,18 @@ private slots:
 
 private:
 
-  // Types of entities we are dealing with
+  /// Types of entities we are dealing with
   enum ItemType { Pair, Group };
 
-  // Possible plot types users might request
+  /// Possible plot types users might request
   enum PlotType { Asymmetry, Counts, Logorithm };
 
-  // Types of periods
+  /// Types of periods
   enum PeriodType { First, Second };
 
+  /// Types of new plot policies
+  enum NewPlotPolicy { NewWindow, PreviousWindow };
+
   /// Initialize local Python environment
   void initLocalPython();
 
@@ -505,6 +508,9 @@ private slots:
   /// When data loaded set various buttons etc to active
   void nowDataAvailable();
 
+  /// Return currently selected new plot policy
+  NewPlotPolicy newPlotPolicy();
+
   /// handles option tab work
   MantidQt::CustomInterfaces::Muon::MuonAnalysisOptionTab* m_optionTab;
   /// handles fit data work

Code/Mantid/MantidQt/CustomInterfaces/src/MuonAnalysis.cpp

@@ -399,8 +399,9 @@ void MuonAnalysis::plotItem(ItemType itemType, int tableRow, PlotType plotType)
 
     setCurrentDataName( wsNameQ );
   }
-  catch(...)
+  catch(std::exception& e)
   { 
+    g_log.error(e.what());
     QMessageBox::critical( this, "MuonAnalysis - Error", "Unable to plot the item. Check log for details." ); 
   }
 
@@ -3546,6 +3547,26 @@ void MuonAnalysis::nowDataAvailable()
   m_uiForm.guessAlphaButton->setEnabled(true);
 }
 
+/**
+ * @return Currently selected new plot policy
+ */
+MuonAnalysis::NewPlotPolicy MuonAnalysis::newPlotPolicy()
+{
+  QMap<QString, NewPlotPolicy> policyMap;
+  policyMap["Create new window"] = NewWindow;
+  policyMap["Use previous window"] = PreviousWindow;
+
+  QString selectedPolicy = m_uiForm.newPlotPolicy->currentText();
+  if ( !policyMap.contains(selectedPolicy) )
+  {
+    throw std::runtime_error("Unknown new plot policy selection");
+  }
+  else
+  {
+    return policyMap[selectedPolicy];
+  }
+}
+
 
 void MuonAnalysis::openDirectoryDialog()
 {