IPAL21493 Incorrect behaviour of Computation, Evaluation succeed dialog boxes in consecutive operations.

src/SMESHGUI/SMESHGUI.cxx

@@ -3406,6 +3406,13 @@ bool SMESHGUI::isSelectionCompatible()
   return isCompatible;
 }
 
+
+bool SMESHGUI::reusableOperation( const int id )
+{
+  // compute, evaluate and precompute are not reusable operations
+  return ( id == 701 || id == 711 || id == 712 ) ? false : SalomeApp_Module::reusableOperation( id );
+} 
+
 bool SMESHGUI::activateModule( SUIT_Study* study )
 {
   bool res = SalomeApp_Module::activateModule( study );

src/SMESHGUI/SMESHGUI.h

@@ -150,6 +150,8 @@ protected:
 
   virtual bool                    isSelectionCompatible();
 
+  virtual bool                    reusableOperation( const int id ); 
+
 private:
   void                            OnEditDelete();
   int                             addVtkFontPref( const QString& label, 

src/SMESHGUI/SMESHGUI_ComputeDlg.cxx

@@ -616,6 +616,15 @@ SMESHGUI_BaseComputeOp::SMESHGUI_BaseComputeOp()
   myHelpFileName = "about_meshes_page.html"; // V4
 }
 
+SMESH::SMESH_Mesh_ptr SMESHGUI_BaseComputeOp::getMesh()
+{
+  LightApp_SelectionMgr* Sel = selectionMgr();
+  SALOME_ListIO selected; Sel->selectedObjects( selected );
+  Handle(SALOME_InteractiveObject) anIO = selected.First();
+  SMESH::SMESH_Mesh_var aMesh = SMESH::GetMeshByIO(anIO);
+  return myMesh->_is_nil() ? aMesh._retn() : SMESH::SMESH_Mesh::_duplicate( myMesh );
+}
+
 //================================================================================
 /*!
  * \brief Start operation
@@ -1171,6 +1180,23 @@ void SMESHGUI_ComputeOp::startOperation()
   computeMesh();
 }
 
+//================================================================================
+/*!
+ * \brief check the same operations on the same mesh
+ */
+//================================================================================
+
+bool SMESHGUI_BaseComputeOp::isValid(  SUIT_Operation* theOp  ) const
+{
+  SMESHGUI_BaseComputeOp* baseOp = dynamic_cast<SMESHGUI_BaseComputeOp*>( theOp );
+  bool ret = true;
+  if ( !myMesh->_is_nil() && baseOp ) {
+    SMESH::SMESH_Mesh_var aMesh = baseOp->getMesh();
+    if ( !aMesh->_is_nil() && aMesh->GetId() == myMesh->GetId() ) ret = false;
+  }
+  return ret;
+}
+
 //================================================================================
 /*!
  * \brief Gets dialog of this operation

src/SMESHGUI/SMESHGUI_ComputeDlg.h

@@ -72,6 +72,8 @@ public:
   SMESHGUI_BaseComputeOp();
   virtual ~SMESHGUI_BaseComputeOp();
 
+  SMESH::SMESH_Mesh_ptr          getMesh();
+
 protected:
   virtual void                   startOperation();
   virtual void                   stopOperation();
@@ -91,6 +93,8 @@ protected:
                                                     SMESH::compute_error_array_var&,
                                                     const bool,
                                                     const QString&);
+
+  virtual bool                   isValid( SUIT_Operation* theOp ) const;
     
 protected slots:
   virtual bool                   onApply();