add error handling for invalid entry into tourneNo field

pyfpdb/GuiTourneyViewer.py

@@ -58,8 +58,7 @@ class GuiTourneyViewer (threading.Thread):
     #end def __init__
     
     def displayClicked(self, widget, data=None):
-        self.prepare(10, 9)
-        
+        if self.prepare(10, 9):
             result=self.db.getTourneyInfo(self.siteName, self.tourneyNo)
             x=0
             y=0
@@ -82,8 +81,7 @@ class GuiTourneyViewer (threading.Thread):
     #def displayClicked
     
     def displayPlayerClicked(self, widget, data=None):
-        self.prepare(4, 5)
-        
+        if self.prepare(4, 5):
             result=self.db.getTourneyPlayerInfo(self.siteName, self.tourneyNo, self.playerName)
             x=0
             y=0
@@ -111,12 +109,21 @@ class GuiTourneyViewer (threading.Thread):
     #end def get_vbox
     
     def prepare(self, columns, rows):
+        try: self.errorLabel.destroy()
+        except: pass
+        
+        try:
             self.tourneyNo=int(self.entryTourney.get_text())
+        except ValueError:
+            self.errorLabel=gtk.Label("invalid entry in tourney number - must enter numbers only")
+            self.mainVBox.add(self.errorLabel)
+            return False
         self.siteName=self.siteBox.get_active_text()
         self.playerName=self.entryPlayer.get_text()
         
         self.table.destroy()
         self.table=gtk.Table(columns=columns, rows=rows)
         self.mainVBox.add(self.table)
+        return True
     #end def readInfo
 #end class GuiTourneyViewer