FEM: ccx tools, better error handling on run ccx

src/Mod/Fem/femcommands/commands.py

@@ -764,29 +764,13 @@ class _CommandFemSolverRun(CommandManager):
         import femsolver.run
         from PySide import QtGui
 
-        def load_results(ret_code):
-            if ret_code == 0:
-                self.fea.load_results()
-            elif ret_code == 201:
-                if self.fea.solver.AnalysisType == 'check':
-                    print('We run into the NOANALYSIS problem!')
-                    # https://forum.freecadweb.org/viewtopic.php?f=18&t=31303&start=10#p260743
-                    self.fea.load_results()
-            else:
-                print("CalculiX failed ccx finished with error {}".format(ret_code))
-
         self.solver = self.selobj
         if self.solver.Proxy.Type == 'Fem::FemSolverCalculixCcxTools':
             print('CalxuliX ccx tools solver!')
             from femtools import ccxtools
             self.fea = ccxtools.FemToolsCcx(None, self.solver)
             self.fea.reset_mesh_purge_results_checked()
-            message = self.fea.check_prerequisites()
-            if message:
-                QtGui.QMessageBox.critical(None, "Missing prerequisite", message)
-                return
-            self.fea.finished.connect(load_results)
-            QtCore.QThreadPool.globalInstance().start(self.fea)
+            self.fea.run()
         else:
             print('Frame work solver!')
             try:

src/Mod/Fem/femtools/ccxtools.py

@@ -666,18 +666,33 @@ class FemToolsCcx(QtCore.QRunnable, QtCore.QObject):
 
     def run(self):
         message = self.check_prerequisites()
-        if not message:
-            self.write_inp_file()
-            if self.inp_file_name != "":
-                FreeCAD.Console.PrintMessage("Writing CalculiX input file completed!\n")
-            else:
-                # TODO do not run solver, do not try to read results in a smarter way than an Exception
-                raise Exception('Error on writing CalculiX input file.\n')
-            self.ccx_run()
+        if message:
+            error_message = "CalculiX was not started due to missing prerequisites:\n{}\n".format(message)
+            FreeCAD.Console.PrintError(error_message)
+            if FreeCAD.GuiUp:
+                QtGui.QMessageBox.critical(None, "Missing prerequisite", error_message)
+            return False
         else:
-            FreeCAD.Console.PrintError("CalculiX was not started due to missing prerequisites:\n{}\n".format(message))
-            # ATM it is not possible to start CalculiX if prerequisites are not fulfilled
-        self.load_results()
+            self.write_inp_file()
+            if self.inp_file_name == "":
+                error_message = "Error on writing CalculiX input file.\n"
+                FreeCAD.Console.PrintError(error_message)
+                if FreeCAD.GuiUp:
+                    QtGui.QMessageBox.critical(None, "Error", error_message)
+                return False
+            else:
+                FreeCAD.Console.PrintMessage("Writing CalculiX input file completed.\n")
+                ret_code = self.ccx_run()
+                if ret_code != 0:
+                    error_message = "CalculiX finished with error {}".format(ret_code)
+                    FreeCAD.Console.PrintError(error_message)
+                    if FreeCAD.GuiUp:
+                        QtGui.QMessageBox.critical(None, "Error", error_message)
+                    return False
+                else:
+                    self.load_results()
+                    # TODO: output an error message if there where problems reading the results
+        return True
 
     def has_no_material_assigned(self):
         if ' *ERROR in calinput: no material was assigned' in self.ccx_stdout: