SbDelegate.h

/*=======================================================================
 *** THE CONTENT OF THIS WORK IS PROPRIETARY TO FEI S.A.S, (FEI S.A.S.),            ***
 ***              AND IS DISTRIBUTED UNDER A LICENSE AGREEMENT.                     ***
 ***                                                                                ***
 ***  REPRODUCTION, DISCLOSURE,  OR USE,  IN WHOLE OR IN PART,  OTHER THAN AS       ***
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 ***  CLAUSE  AT FAR 52.227-19  OR SUBPARAGRAPH  (C)(1)(II)  OF  THE RIGHTS IN      ***
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 ***                   COPYRIGHT (C) 1996-2017 BY FEI S.A.S,                        ***
 ***                        BORDEAUX, FRANCE                                        ***
 ***                      ALL RIGHTS RESERVED                                       ***
**=======================================================================*/
/*=======================================================================
** Author      : Thibaut Andrieu (Mar 2015)
**=======================================================================*/
 
#ifndef  _SB_DELEGATE_H_
#define  _SB_DELEGATE_H_
 
#include <Inventor/SbDelegatePtrFunImpl.h>
#include <Inventor/SbDelegateMemberFunImpl.h>
namespace inventor
{
namespace helper
{
 
template<typename ReturnType, typename ArgType>
 
{
public:
 
  SbDelegate()
  {
  }
 
  SbDelegate( const SbDelegate<ReturnType, ArgType>& other )
  : m_delegateImpl ( other.m_delegateImpl->clone() )
  {
  }
 
  SbDelegate(ReturnType (*f)(ArgType))
  {
    if ( f != NULL )
      m_delegateImpl = new inventor::impl::SbDelegatePtrFunImpl<ReturnType, ArgType>(f);
    else
      m_delegateImpl = NULL;
  }
 
  template<typename ClassType>
  SbDelegate(ClassType& a, ReturnType (ClassType::*f)(ArgType))
  {
    if ( f != NULL )
      m_delegateImpl = new inventor::impl::SbDelegateMemberFunImpl<ReturnType, ArgType, ClassType>(a, f);
    else
      m_delegateImpl = NULL;
  }
 
  ReturnType operator()(ArgType arg) const
  {
    if ( m_delegateImpl.ptr() != NULL )
      return m_delegateImpl->call(arg);
    else
      return ReturnType();
  }
 
  bool equal(ReturnType (*f)(ArgType)) const
  {
    if ( m_delegateImpl.ptr() == NULL )
      return (f == NULL);
 
    inventor::impl::SbDelegatePtrFunImpl<ReturnType, ArgType>* delegatePtrFun = dynamic_cast< inventor::impl::SbDelegatePtrFunImpl<ReturnType, ArgType>* >(m_delegateImpl.ptr());
    if ( delegatePtrFun != NULL )
      return delegatePtrFun->equal(f);
 
    return false;
  }
 
  template<typename ClassType>
  bool equal(ClassType& a, ReturnType (ClassType::*f)(ArgType)) const
  {
    if ( m_delegateImpl.ptr() == NULL )
      return (f == NULL);
 
    inventor::impl::SbDelegateMemberFunImpl<ReturnType, ArgType, ClassType>* delegateMemberFun = NULL;
    delegateMemberFun = dynamic_cast< inventor::impl::SbDelegateMemberFunImpl<ReturnType, ArgType, ClassType>* >(m_delegateImpl.ptr());
    if ( delegateMemberFun != NULL )
      return delegateMemberFun->equal(a, f);
    else
      return false;
  }
 
private:
 
  SoRef< inventor::impl::SbDelegateImpl<ReturnType, ArgType> > m_delegateImpl;
};
 
} // helper
} // inventor
#endif // _SB_DELEGATE_H_