icinga2/base/delegate.h

60 lines
2.4 KiB
C++

/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012 Icinga Development Team (http://www.icinga.org/) *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* as published by the Free Software Foundation; either version 2 *
* of the License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software Foundation *
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
******************************************************************************/
#ifndef DELEGATE_H
#define DELEGATE_H
namespace icinga
{
template<class TObject, class TArgs>
int delegate_fwd(int (TObject::*function)(TArgs), weak_ptr<TObject> wref, TArgs args)
{
shared_ptr<TObject> ref = wref.lock();
if (!ref)
return -1;
return (ref.get()->*function)(args);
}
template<class TObject, class TArgs>
function<int (TArgs)> bind_weak(int (TObject::*function)(TArgs), const weak_ptr<TObject>& wref)
{
return bind(&delegate_fwd<TObject, TArgs>, function, wref, _1);
}
template<class TObject, class TArgs>
function<int (TArgs)> bind_weak(int (TObject::*function)(TArgs), shared_ptr<TObject> ref)
{
weak_ptr<TObject> wref = weak_ptr<TObject>(ref);
return bind_weak(function, wref);
}
template<class TObject, class TArgs>
function<int (TArgs)> bind_weak(int (TObject::*function)(TArgs), shared_ptr<Object> ref)
{
weak_ptr<TObject> wref = weak_ptr<TObject>(static_pointer_cast<TObject>(ref));
return bind_weak(function, wref);
}
}
#endif /* DELEGATE_H */