SoCallbackList.h

/*=======================================================================
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**=======================================================================*/
/*=======================================================================
** Author      : David Mott (MMM yyyy)
**=======================================================================*/
/*=======================================================================
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**=======================================================================*/
/*=======================================================================
** Modified by : VSG (MMM YYYY)
**=======================================================================*/
 
 
#ifndef  _SO_CALLBACK_LIST_
#define  _SO_CALLBACK_LIST_
 
#include <Inventor/SbPList.h>
 
//
//  Class: SoCallbackList
//
 
typedef void SoCallbackListCB(void *userData, void *callbackData);
 
class  SoCallbackList {
    
 public:
 
  SoCallbackList();
  ~SoCallbackList();
  
  void addCallback(SoCallbackListCB *f, void *userData = NULL);
  void removeCallback(SoCallbackListCB *f, void *userData = NULL);
    
  void clearCallbacks() { list.truncate(0); }
  int getNumCallbacks() const { return list.getLength(); }
 
  void invokeCallbacks(void *callbackData);
  
  void enable(SbBool enableCallbacks){ m_enable = enableCallbacks;}
 
 private:
  
   //If set tofalse, callbacks will have no effect
   SbBool m_enable;
 
  // callbackList holds a list of functions and user data
  SbPList list;
 
};
 
#endif  /* _SO_CALLBACK_LIST_ */