FEM: extend the C++ fem mesh object to be able make python mesh object childs

src/Mod/Fem/App/AppFem.cpp

@@ -136,6 +136,7 @@ PyMODINIT_FUNC initFem()
     Fem::FeaturePython              ::init();
     Fem::FemMesh                    ::init();
     Fem::FemMeshObject              ::init();
+    Fem::FemMeshObjectPython        ::init();
     Fem::FemMeshShapeObject         ::init();
     Fem::FemMeshShapeNetgenObject   ::init();
     Fem::PropertyFemMesh            ::init();

src/Mod/Fem/App/FemMeshObject.cpp

@@ -29,6 +29,7 @@
 #include "FemMeshObject.h"
 #include "FemMesh.h"
 #include <App/DocumentObjectPy.h>
+#include <App/FeaturePythonPyImp.h>
 #include <Base/Placement.h>
 
 using namespace Fem;
@@ -70,3 +71,25 @@ void FemMeshObject::onChanged(const Property* prop)
     }
 
 }
+
+// Python feature ---------------------------------------------------------
+
+namespace App {
+/// @cond DOXERR
+PROPERTY_SOURCE_TEMPLATE(Fem::FemMeshObjectPython, Fem::FemMeshObject)
+template<> const char* Fem::FemMeshObjectPython::getViewProviderName(void) const {
+    return "FemGui::ViewProviderFemMeshPython";
+}
+
+template<> PyObject* Fem::FemMeshObjectPython::getPyObject(void) {
+    if (PythonObject.is(Py::_None())) {
+        // ref counter is set to 1
+        PythonObject = Py::Object(new App::FeaturePythonPyT<App::DocumentObjectPy>(this),true);
+    }
+    return Py::new_reference_to(PythonObject);
+}
+
+// explicit template instantiation
+template class AppFemExport FeaturePythonT<Fem::FemMeshObject>;
+
+}

src/Mod/Fem/App/FemMeshObject.h

@@ -24,6 +24,7 @@
 #ifndef Fem_FemMeshObject_H
 #define Fem_FemMeshObject_H
 
+#include <App/FeaturePython.h>
 #include <App/GeoFeature.h>
 #include <App/PropertyFile.h>
 #include <App/PropertyGeo.h>
@@ -60,6 +61,9 @@ protected:
     virtual void onChanged (const App::Property* prop);
 };
 
+typedef App::FeaturePythonT<FemMeshObject> FemMeshObjectPython;
+
+
 } //namespace Fem
 
 

src/Mod/Fem/Gui/AppFemGui.cpp

@@ -109,6 +109,7 @@ PyMODINIT_FUNC initFemGui()
     FemGui::ViewProviderFemAnalysis               ::init();
     FemGui::ViewProviderFemAnalysisPython         ::init();
     FemGui::ViewProviderFemMesh                   ::init();
+    FemGui::ViewProviderFemMeshPython                   ::init();
     FemGui::ViewProviderFemMeshShape              ::init();
     FemGui::ViewProviderFemMeshShapeNetgen        ::init();
     FemGui::ViewProviderSolver                    ::init();

src/Mod/Fem/Gui/ViewProviderFemMesh.cpp

@@ -2464,3 +2464,15 @@ void ViewProviderFEMMeshBuilder::createMesh(const App::Property* prop,
 
 
 }
+
+
+// Python feature -----------------------------------------------------------------------
+
+namespace Gui {
+/// @cond DOXERR
+PROPERTY_SOURCE_TEMPLATE(FemGui::ViewProviderFemMeshPython, FemGui::ViewProviderFemMesh)
+/// @endcond
+
+// explicit template instantiation
+template class FemGuiExport ViewProviderPythonFeatureT<ViewProviderFemMesh>;
+}

src/Mod/Fem/Gui/ViewProviderFemMesh.h

@@ -26,6 +26,7 @@
 
 #include <Gui/ViewProviderGeometryObject.h>
 #include <Gui/ViewProviderBuilder.h>
+#include <Gui/ViewProviderPythonFeature.h>
 
 #include <CXX/Objects.hxx>
 
@@ -163,6 +164,9 @@ private:
     class Private;
 };
 
+typedef Gui::ViewProviderPythonFeatureT<ViewProviderFemMesh> ViewProviderFemMeshPython;
+
+
 } //namespace FemGui
 
 

src/Mod/Fem/Gui/ViewProviderFemMeshPy.xml

@@ -1,13 +1,13 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <GenerateModel xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="generateMetaModel_Module.xsd">
     <PythonExport
-            Father="ViewProviderPy"
+            Father="ViewProviderDocumentObjectPy"
             Name="ViewProviderFemMeshPy"
             Twin="ViewProviderFemMesh"
             TwinPointer="ViewProviderFemMesh"
             Include="Mod/Fem/Gui/ViewProviderFemMesh.h"
             Namespace="FemGui"
-            FatherInclude="Gui/ViewProviderPy.h"
+            FatherInclude="Gui/ViewProviderDocumentObjectPy.h"
             FatherNamespace="Gui"
             Constructor="false"
             Delete="false">