Refs #9403 Save Workspaces dialog can now be opened offline

The Save workspaces dialog can now be opened under all the following circumstances, whereas before it would raise an exception and not show:

* The workstation is not connected to a network or loses it's connection to a network
* The archives aren't available or aren't mounted
* A config.xml file isn't in place or doesn't contain a mount point location

Code/Mantid/scripts/Interface/ui/reflectometer/refl_save.py

@@ -17,14 +17,16 @@
 class Ui_SaveWindow(object):
     def __init__(self):
 
+        self.__has_mount_point = True;
+
         self.__instrument = config['default.instrument'].strip().upper()
 
         try:
             usersettings = Settings() # This will throw a missing config exception if no config file is available.
             self.__mountpoint = usersettings.get_named_setting("DataMountPoint")
         except KeyError:
             print "DataMountPoint is missing from the config.xml file."
-            raise
+            self.__has_mount_point = False;
 
     def setupUi(self, SaveWindow):
         self.SavePath=""
@@ -245,28 +247,31 @@ def populateList(self):
             if (self.SavePath!=''):
                 self.lineEdit.setText(self.SavePath)
             else:
-                base_path = os.path.join(self.__mountpoint, 'NDX'+  self.__instrument, 'Instrument','logs','journal')
-                print base_path
-                main_journal_path = os.path.join(base_path, 'journal_main.xml')
-                tree1=xml.parse(main_journal_path)
-                root1=tree1.getroot()
-                currentJournal=root1[len(root1)-1].attrib.get('name')
-                cycle_journal_path = os.path.join(base_path, currentJournal)
-                tree=xml.parse(cycle_journal_path)
-                root=tree.getroot()
-
-                i=0
-                try:
-                    while root[i][4].text!=str(RB_Number):
-                        i+=1
-                    if root[i][1].text.find(',')>0:
-                        user=root[i][1].text[0:root[i][1].text.find(',')]
-                    else:
-                        user=root[i][1].text[0:root[i][1].text.find(' ')]
-                    SavePath = os.path.join('U:', user)
-                    self.lineEdit.setText(SavePath)
-                except LookupError:
-                    print "Not found!"
+                if self.__has_mount_point:
+                    try:
+                        base_path = os.path.join(self.__mountpoint, 'NDX'+  self.__instrument, 'Instrument','logs','journal')
+                        print "Loading journal from", base_path
+                        main_journal_path = os.path.join(base_path, 'journal_main.xml')
+                        tree1=xml.parse(main_journal_path)
+                        root1=tree1.getroot()
+                        currentJournal=root1[len(root1)-1].attrib.get('name')
+                        cycle_journal_path = os.path.join(base_path, currentJournal)
+                        tree=xml.parse(cycle_journal_path)
+                        root=tree.getroot()
+                        i=0
+                        try:
+                            while root[i][4].text!=str(RB_Number):
+                                i+=1
+                            if root[i][1].text.find(',')>0:
+                                user=root[i][1].text[0:root[i][1].text.find(',')]
+                            else:
+                                user=root[i][1].text[0:root[i][1].text.find(' ')]
+                            SavePath = os.path.join('U:', user)
+                            self.lineEdit.setText(SavePath)
+                        except LookupError:
+                            print "Couldn't find user name in archives!"
+                    except:
+                        print "Journal does not exist or is unreachable, please check your network connection."
 
 #--------- If "Save" button pressed, selcted workspaces are saved -------------
     def buttonClickHandler1(self):