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lib-of-vs-libs-Poco-include-Poco-FunctionDelegate.h / h



  //
  // FunctionDelegate.h
  //
  // Id: //poco/1.3/Foundation/include/Poco/FunctionDelegate.h#1 
  //
  // Library: Foundation
  // Package: Events
  // Module:  FunctionDelegate
  //
  // Implementation of the FunctionDelegate template.
  //
  // Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
  // and Contributors.
  //
  // Permission is hereby granted, free of charge, to any person or organization
  // obtaining a copy of the software and accompanying documentation covered by
  // this license (the "Software") to use, reproduce, display, distribute,
  // execute, and transmit the Software, and to prepare derivative works of the
  // Software, and to permit third-parties to whom the Software is furnished to
  // do so, all subject to the following:
  // 
  // The copyright notices in the Software and this entire statement, including
  // the above license grant, this restriction and the following disclaimer,
  // must be included in all copies of the Software, in whole or in part, and
  // all derivative works of the Software, unless such copies or derivative
  // works are solely in the form of machine-executable object code generated by
  // a source language processor.
  // 
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  // FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
  // SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
  // FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
  // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  // DEALINGS IN THE SOFTWARE.
  //
  
  ifndef  Foundation_FunctionDelegate_INCLUDED
  define  Foundation_FunctionDelegate_INCLUDED
  
  include "Poco/Foundation.h"
  include "Poco/AbstractDelegate.h"
  
  namespace Poco {
  
  template <class TArgs, bool hasSender = true, bool senderIsConst = true> 
  class FunctionDelegate: public AbstractDelegate<TArgs>
Wraps a C style function (or a C++ static fucntion) to be used as a delegate { public: typedef void (*NotifyMethod)(const void*, TArgs&); 

          FunctionDelegate(NotifyMethod method):
                  AbstractDelegate<TArgs>(*reinterpret_cast<void**>(&method)),
                  _receiverMethod(method)
          {
          }
  
          FunctionDelegate(const FunctionDelegate& delegate):
                  AbstractDelegate<TArgs>(delegate),
                  _receiverMethod(delegate._receiverMethod)
          {
          }
  
          ~FunctionDelegate()
          {
          }
          
          FunctionDelegate& operator = (const FunctionDelegate& delegate)
          {
                  if (&delegate != this)
                  {
                          this->_pTarget        = delegate._pTarget;
                          this->_receiverMethod = delegate._receiverMethod;
                  }
                  return *this;
          }
  
          bool notify(const void* sender, TArgs& arguments)
          {
                  (*_receiverMethod)(sender, arguments);
                  return true; // a "standard" delegate never expires
          }
  
          AbstractDelegate<TArgs>* clone() const
          {
                  return new FunctionDelegate(*this);
          }
  
  protected:
          NotifyMethod _receiverMethod;
  
  private:
          FunctionDelegate();
  };
  
  template <class TArgs> 
  class FunctionDelegate<void**>(&method)),
                  _receiverMethod(method)
          {
          }
  
          FunctionDelegate(const FunctionDelegate& delegate):
                  AbstractDelegate<TArgs>(delegate),
                  _receiverMethod(delegate._receiverMethod)
          {
          }
  
          ~FunctionDelegate()
          {
          }
          
          FunctionDelegate& operator = (const FunctionDelegate& delegate)
          {
                  if (&delegate != this)
                  {
                          this->_pTarget        = delegate._pTarget;
                          this->_receiverMethod = delegate._receiverMethod;
                  }
                  return *this;
          }
  
          bool notify(const void* sender, TArgs& arguments)
          {
                  (*_receiverMethod)(const_cast<void*>(sender), arguments);
                  return true; // a "standard" delegate never expires
          }
  
          AbstractDelegate<TArgs>* clone() const
          {
                  return new FunctionDelegate(*this);
          }
  
  protected:
          NotifyMethod _receiverMethod;
  
  private:
          FunctionDelegate();
  };
  
  template <class TArgs, bool senderIsConst> 
  class FunctionDelegate<void**>(&method)),
                  _receiverMethod(method)
          {
          }
  
          FunctionDelegate(const FunctionDelegate& delegate):
                  AbstractDelegate<TArgs>(delegate),
                  _receiverMethod(delegate._receiverMethod)
          {
          }
  
          ~FunctionDelegate()
          {
          }
          
          FunctionDelegate& operator = (const FunctionDelegate& delegate)
          {
                  if (&delegate != this)
                  {
                          this->_pTarget        = delegate._pTarget;
                          this->_receiverMethod = delegate._receiverMethod;
                  }
                  return *this;
          }
  
          bool notify(const void* sender, TArgs& arguments)
          {
                  (*_receiverMethod)(arguments);
                  return true; // a "standard" delegate never expires
          }
  
          AbstractDelegate<TArgs>* clone() const
          {
                  return new FunctionDelegate(*this);
          }
  
  protected:
          NotifyMethod _receiverMethod;
  
  private:
          FunctionDelegate();
  };
  
  } // namespace Poco
  
  endif // Foundation_FunctionDelegate_INCLUDED
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

(C) Æliens 04/09/2009

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