Refs #2857. Add appending files. The files should use the plus alg.

Connect the next and previous buttons to appending files.

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

@@ -179,7 +179,7 @@ private slots:
   void showEvent(QShowEvent *e);
 
   /// Input file changed - update GUI accordingly
-  void inputFileChanged(const QString& filename);
+  void inputFileChanged(const QStringList& filenames);
 
   /// Return the pair which is in focus and -1 if none
   int pairInFocus();
@@ -221,6 +221,15 @@ private slots:
   /// When data loaded set various buttons etc to active
   void nowDataAvailable();
 
+  /// Adds the workspaces in a range.
+  void plusRangeWorkspaces();
+
+  /// Delete ranged workspaces.
+  void deleteRangedWorkspaces();
+
+  /// Get a name for the ranged workspace.
+  std::string getRangedName();
+
   /// Check if grouping in table is consistent with data file
   std::string isGroupingAndDataConsistent();
 
@@ -270,7 +279,7 @@ private slots:
   int m_tabNumber;
 
   /// used to test that a new filename has been entered 
-  QString m_previousFilename;
+  QStringList m_previousFilenames;
 
   /// List of current group names 
   std::vector<std::string> m_groupNames;
@@ -349,11 +358,11 @@ private slots:
   /// change and load the run depending on the value passed as a parameter
   void changeRun(int amountToChange);
 
-  /// Separate the muon file, current File becomes the beginning part of the file i.e the instrument in the file MUSR002413
-  void separateMuonFile(QString & currentFile, int & runNumberSize, int & runNumber);
+  /// Separate the muon file. The current File will remove the path (i.e MUSR002413.nxs)
+  void separateMuonFile(QString & filePath, QString & currentFile, QString & run, int & runSize);
 
   /// Include the 0's fromt eh beginning of the file that were lost in conversion from QString to int
-  void getFullCode(int size, QString & limitedCode);
+  void getFullCode(int originalSize, QString & run);
 
   /// Setup the signals for updating
   void connectAutoUpdate();