.. _program_listing_file_Logic_vtkSlicerLayerDMLogic.cxx:

Program Listing for File vtkSlicerLayerDMLogic.cxx
==================================================

|exhale_lsh| :ref:`Return to documentation for file <file_Logic_vtkSlicerLayerDMLogic.cxx>` (``Logic/vtkSlicerLayerDMLogic.cxx``)

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

.. code-block:: cpp

   #include "vtkSlicerLayerDMLogic.h"
   
   // LayerDM includes
   #include <vtkSlicerLayerDMVersion.h>
   
   // Slicer includes
   #include <vtkMRMLLayerDMWidgetEventTranslationNode.h>
   
   // VTK includes
   #include <vtkObjectFactory.h>
   
   vtkStandardNewMacro(vtkSlicerLayerDMLogic);
   
   void vtkSlicerLayerDMLogic::RegisterNodes()
   {
     RegisterNodeIfNeeded<vtkMRMLLayerDMWidgetEventTranslationNode>(GetMRMLScene());
   }
   
   int vtkSlicerLayerDMLogic::GetVersionMajor()
   {
     return vtkSlicerLayerDM_VERSION_MAJOR;
   }
   
   int vtkSlicerLayerDMLogic::GetVersionMinor()
   {
     return vtkSlicerLayerDM_VERSION_MINOR;
   }
   
   int vtkSlicerLayerDMLogic::GetVersionPatch()
   {
     return vtkSlicerLayerDM_VERSION_PATCH;
   }
   
   std::string vtkSlicerLayerDMLogic::GetVersion()
   {
     return vtkSlicerLayerDM_VERSION;
   }
   
   void vtkSlicerLayerDMLogic::SetWidgetEventTranslationNode(vtkMRMLNode* node, vtkMRMLLayerDMWidgetEventTranslationNode* translationNode)
   {
     SetReferenceNode(node, translationNode, EventTranslationRole);
   }
   
   vtkMRMLLayerDMWidgetEventTranslationNode* vtkSlicerLayerDMLogic::GetWidgetEventTranslationNode(vtkMRMLNode* node)
   {
     return GetReferenceNode<vtkMRMLLayerDMWidgetEventTranslationNode>(node, EventTranslationRole);
   }
   
   vtkMRMLLayerDMWidgetEventTranslationNode* vtkSlicerLayerDMLogic::GetWidgetEventTranslationSingleton(vtkMRMLScene* scene, const std::string& singletonId)
   {
     if (!scene)
     {
       return {};
     }
   
     return vtkMRMLLayerDMWidgetEventTranslationNode::SafeDownCast(scene->GetNodeByID(singletonId));
   }
   
   vtkMRMLLayerDMWidgetEventTranslationNode* vtkSlicerLayerDMLogic::GetWidgetEventTranslationSingleton(
     vtkMRMLScene* scene,
     const std::string& singletonId,
     const std::function<void(vtkMRMLLayerDMWidgetEventTranslationNode*)>& configureF)
   {
     auto node = GetWidgetEventTranslationSingleton(scene, singletonId);
     if (!node)
     {
       node = CreateWidgetEventTranslationSingleton(scene, singletonId);
       configureF(node);
     }
     return node;
   }
   
   vtkMRMLLayerDMWidgetEventTranslationNode* vtkSlicerLayerDMLogic::CreateWidgetEventTranslationSingleton(vtkMRMLScene* scene, const std::string& singletonId)
   {
     if (auto node = GetWidgetEventTranslationSingleton(scene, singletonId))
     {
       return node;
     }
   
     if (!scene)
     {
       return {};
     }
   
     vtkNew<vtkMRMLLayerDMWidgetEventTranslationNode> newNode;
     newNode->SetSingletonTag(singletonId.c_str());
     newNode->SetSaveWithScene(false);
     return vtkMRMLLayerDMWidgetEventTranslationNode::SafeDownCast(scene->AddNode(newNode));
   }
   
   void vtkSlicerLayerDMLogic::CreateDefaultEventTranslation(vtkMRMLNode* node,
                                                             const std::string& singletonId,
                                                             const std::function<void(vtkMRMLLayerDMWidgetEventTranslationNode*)>& configureF)
   {
     if (GetWidgetEventTranslationNode(node))
     {
       return;
     }
     SetWidgetEventTranslationNode(node, GetWidgetEventTranslationSingleton(node ? node->GetScene() : nullptr, singletonId, configureF));
   }
   
   std::string vtkSlicerLayerDMLogic::GetEventTranslationRole()
   {
     return EventTranslationRole;
   }
   
   std::string vtkSlicerLayerDMLogic::GetDisplayRole()
   {
     return DisplayRole;
   }