FMEwork/VTK/Sources/VTK/MLVTK/VTKSupport/mlVTKModule.h

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// **InsertLicense** code
//----------------------------------------------------------------------------------

//----------------------------------------------------------------------------------
#ifndef __mlVTKModule_H
#define __mlVTKModule_H

// Include most ml specific things.
// Include dll-specific settings.
#include "mlInitSystemVTKSupport.h"

// Include most ml specific things.
#ifndef __mlModuleIncludes_H
#include "mlModuleIncludes.h"
#endif

// Include vtkObject class which is a base class of all automatically VTK
// objects which potentially can be observed.
#include <vtkObject.h>

// Include support for subject/observer design pattern of VTK.
#include <vtkCallbackCommand.h>

// Include the class for dummy polygon data source used as placeholder for NULL polygon data sources.
#include "vtkPolyDataAlgorithm.h"


ML_START_NAMESPACE
   
  //----------------------------------------------------------------------------------
  //----------------------------------------------------------------------------------
  class MLVTK_SUPPORT_EXPORT VTKModule : public Module
  {
  public:

    VTKModule(int inputNum=0, int outputNum=0);

    virtual ~VTKModule();

    void       suppressHandleVTKObjectCalls(bool suppress);

    bool       areHandleVTKObjectCallsSuppressed();

  protected:

    void       setManagedObject(vtkObject *vObj);

    vtkObject *getManagedObject();


    void       setObservedObject(vtkObject *vObj, 
                                 vtkCommand::EventIds eventId=vtkCommand::AnyEvent, 
                                 float priority = 0.0f);

    vtkObject *getObservedObject();


    virtual void handleVTKObject(vtkObject * /*caller*/,  
                                 unsigned long /*eventId*/, 
                                 void * /*callData*/) { };

    std::string getInputCheckString() const;

    vtkPolyDataAlgorithm *getDummyPolyDataAlgorithm(int polyType = 0);
    
  private:

    virtual void _handleManagedVTKObject(vtkObject *caller,  
                                         unsigned long eventId, 
                                         void *callData);

    static void _vtkCallbackFunc(vtkObject *caller, unsigned long eid, void *clientdata, void *calldata);

    static void _vtkManagedCallbackFunc(vtkObject *caller, unsigned long eid, void *clientdata, void *calldata);


    bool                _suppressHandleVTKObjectCalls;

    vtkCallbackCommand *_observer;

    vtkObject          *_observedObject;

    vtkObject          *_managedObject;

    vtkCallbackCommand **_managedObservers;

    ML_MODULE_CLASS_HEADER(VTKModule);
  };

ML_END_NAMESPACE

#endif