topical media & game development
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lib-of-vs-libs-Poco-include-Poco-AbstractDelegate.h / h



  //
  // AbstractDelegate.h
  //
  // Id: //poco/1.3/Foundation/include/Poco/AbstractDelegate.h#2 
  //
  // Library: Foundation
  // Package: Events
  // Module:  AbstractDelegate
  //
  // Implementation of the AbstractDelegate 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_AbstractDelegate_INCLUDED
  define  Foundation_AbstractDelegate_INCLUDED
  
  include "Poco/Foundation.h"
  
  namespace Poco {
  
  template <class TArgs> 
  class AbstractDelegate
Interface for Delegate and Expire Very similar to AbstractPriorityDelegate but having two separate files (no inheritance) allows one to have compile-time checks when registering an observer instead of run-time checks. { public: AbstractDelegate(void* pTarget): _pTarget(pTarget) { poco_assert_dbg (_pTarget != 0); } 

          AbstractDelegate(const AbstractDelegate& del): _pTarget(del._pTarget)
          {
                  poco_assert_dbg (_pTarget != 0);
          }
  
          virtual ~AbstractDelegate() 
          {
          }
  
          virtual bool notify(const void* sender, TArgs& arguments) = 0;
Returns false, if the Delegate is no longer valid, thus indicating an expire 

          virtual AbstractDelegate* clone() const = 0;
Returns a deep-copy of the AbstractDelegate 

          bool operator < (const AbstractDelegate<TArgs>& other) const
For comparing AbstractDelegates in a collection. { return _pTarget < other._pTarget; } 

          void* target() const
          {
                  return _pTarget;
          }
  
  protected:
          void* _pTarget;
  };
  
  } // namespace Poco
  
  endif
[] 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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