.. _program_listing_file_MRMLDM_vtkMRMLLayerDMPipelineScriptedCreator.cxx:

Program Listing for File vtkMRMLLayerDMPipelineScriptedCreator.cxx
==================================================================

|exhale_lsh| :ref:`Return to documentation for file <file_MRMLDM_vtkMRMLLayerDMPipelineScriptedCreator.cxx>` (``MRMLDM/vtkMRMLLayerDMPipelineScriptedCreator.cxx``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   #include "vtkMRMLLayerDMPipelineScriptedCreator.h"
   
   // Layer DM includes
   #include "vtkMRMLLayerDMPipelineI.h"
   #include "vtkMRMLLayerDMPythonUtil.h"
   
   // Slicer includes
   #include "vtkMRMLAbstractViewNode.h"
   #include "vtkMRMLNode.h"
   
   // VTK includes
   #include <vtkObjectFactory.h>
   #include <vtkPythonUtil.h>
   
   vtkStandardNewMacro(vtkMRMLLayerDMPipelineScriptedCreator);
   
   vtkMRMLLayerDMPipelineScriptedCreator::vtkMRMLLayerDMPipelineScriptedCreator()
     : m_object(nullptr)
   {
     this->SetCallback(
       [this](vtkMRMLAbstractViewNode* viewNode, vtkMRMLNode* node) -> vtkSmartPointer<vtkMRMLLayerDMPipelineI>
       {
         if (!vtkMRMLLayerDMPythonUtil::IsValidPythonContext())
         {
           return nullptr;
         }
   
         vtkPythonScopeGilEnsurer gilEnsurer;
         PyObject* result = vtkMRMLLayerDMPythonUtil::CallPythonObject(
           this->m_object, vtkMRMLLayerDMPythonUtil::ToPyArgs({ vtkMRMLLayerDMPythonUtil::ToPyObject(viewNode), vtkMRMLLayerDMPythonUtil::ToPyObject(node) }));
         if (!result)
         {
           auto errorMsg = std::string(__func__) + ": Failed to call : " + vtkMRMLLayerDMPythonUtil::GetObjectStr(this->m_object) + ":";
           vtkMRMLLayerDMPythonUtil::PrintErrorTraceback(this, errorMsg);
           return nullptr;
         }
         return vtkMRMLLayerDMPipelineI::SafeDownCast(vtkPythonUtil::GetPointerFromObject(result, "vtkMRMLLayerDMPipelineI"));
       });
   }
   
   vtkMRMLLayerDMPipelineScriptedCreator::~vtkMRMLLayerDMPipelineScriptedCreator()
   {
     vtkMRMLLayerDMPythonUtil::DeletePythonObject(&this->m_object);
   }
   
   void vtkMRMLLayerDMPipelineScriptedCreator::SetPythonCallback(PyObject* object)
   {
     vtkMRMLLayerDMPythonUtil::SetPythonObject(&this->m_object, object);
   }