2006-10-23 17:48:43 +02:00
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//
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// Delegate.h
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//
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2008-01-28 18:23:19 +01:00
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// $Id: //poco/svn/Foundation/include/Poco/Delegate.h#2 $
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2006-10-23 17:48:43 +02:00
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//
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// Library: Foundation
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// Package: Events
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// Module: Delegate
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//
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// Implementation of the Delegate template.
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//
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// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#ifndef Foundation_Delegate_INCLUDED
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#define Foundation_Delegate_INCLUDED
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#include "Poco/Foundation.h"
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#include "Poco/AbstractDelegate.h"
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2007-06-13 17:13:29 +02:00
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#include "Poco/FunctionDelegate.h"
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2006-10-23 17:48:43 +02:00
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#include "Poco/Expire.h"
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namespace Poco {
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2007-06-13 17:13:29 +02:00
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template <class TObj, class TArgs, bool withSender=true>
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2006-10-23 17:48:43 +02:00
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class Delegate: public AbstractDelegate<TArgs>
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{
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public:
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typedef void (TObj::*NotifyMethod)(const void*, TArgs&);
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Delegate(TObj* obj, NotifyMethod method):
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AbstractDelegate<TArgs>(obj),
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_receiverObject(obj),
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_receiverMethod(method)
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{
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}
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Delegate(const Delegate& delegate):
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AbstractDelegate<TArgs>(delegate),
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_receiverObject(delegate._receiverObject),
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_receiverMethod(delegate._receiverMethod)
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{
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}
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~Delegate()
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{
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}
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Delegate& operator = (const Delegate& delegate)
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{
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if (&delegate != this)
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{
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this->_pTarget = delegate._pTarget;
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this->_receiverObject = delegate._receiverObject;
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this->_receiverMethod = delegate._receiverMethod;
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}
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return *this;
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}
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bool notify(const void* sender, TArgs& arguments)
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{
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(_receiverObject->*_receiverMethod)(sender, arguments);
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return true; // a "standard" delegate never expires
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}
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AbstractDelegate<TArgs>* clone() const
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{
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return new Delegate(*this);
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}
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protected:
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TObj* _receiverObject;
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NotifyMethod _receiverMethod;
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private:
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Delegate();
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};
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2007-06-13 17:13:29 +02:00
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template <class TObj, class TArgs>
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class Delegate<TObj, TArgs, false>: public AbstractDelegate<TArgs>
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{
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public:
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typedef void (TObj::*NotifyMethod)(TArgs&);
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Delegate(TObj* obj, NotifyMethod method):
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AbstractDelegate<TArgs>(obj),
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_receiverObject(obj),
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_receiverMethod(method)
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{
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}
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Delegate(const Delegate& delegate):
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AbstractDelegate<TArgs>(delegate),
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_receiverObject(delegate._receiverObject),
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_receiverMethod(delegate._receiverMethod)
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{
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}
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~Delegate()
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{
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}
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Delegate& operator = (const Delegate& delegate)
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{
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if (&delegate != this)
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{
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this->_pTarget = delegate._pTarget;
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this->_receiverObject = delegate._receiverObject;
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this->_receiverMethod = delegate._receiverMethod;
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}
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return *this;
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}
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bool notify(const void*, TArgs& arguments)
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{
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(_receiverObject->*_receiverMethod)(arguments);
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return true; // a "standard" delegate never expires
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}
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AbstractDelegate<TArgs>* clone() const
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{
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return new Delegate(*this);
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}
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protected:
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TObj* _receiverObject;
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NotifyMethod _receiverMethod;
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private:
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Delegate();
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};
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template <class TObj, class TArgs>
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static Delegate<TObj, TArgs, true> delegate(TObj* pObj, void (TObj::*NotifyMethod)(const void*, TArgs&))
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{
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return Delegate<TObj, TArgs, true>(pObj, NotifyMethod);
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}
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template <class TObj, class TArgs>
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static Delegate<TObj, TArgs, false> delegate(TObj* pObj, void (TObj::*NotifyMethod)(TArgs&))
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{
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return Delegate<TObj, TArgs, false>(pObj, NotifyMethod);
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}
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template <class TObj, class TArgs>
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static Expire<TArgs> delegate(TObj* pObj, void (TObj::*NotifyMethod)(const void*, TArgs&), Timestamp::TimeDiff expireMillisecs)
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{
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return Expire<TArgs>(Delegate<TObj, TArgs, true>(pObj, NotifyMethod), expireMillisecs);
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}
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template <class TObj, class TArgs>
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static Expire<TArgs> delegate(TObj* pObj, void (TObj::*NotifyMethod)(TArgs&), Timestamp::TimeDiff expireMillisecs)
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{
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return Expire<TArgs>(Delegate<TObj, TArgs, false>(pObj, NotifyMethod), expireMillisecs);
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}
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template <class TArgs>
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static Expire<TArgs> delegate(void (*NotifyMethod)(const void*, TArgs&), Timestamp::TimeDiff expireMillisecs)
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{
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return Expire<TArgs>(FunctionDelegate<TArgs, true, true>(NotifyMethod), expireMillisecs);
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}
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template <class TArgs>
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static Expire<TArgs> delegate(void (*NotifyMethod)(void*, TArgs&), Timestamp::TimeDiff expireMillisecs)
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{
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return Expire<TArgs>(FunctionDelegate<TArgs, true, false>(NotifyMethod), expireMillisecs);
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}
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template <class TArgs>
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static Expire<TArgs> delegate(void (*NotifyMethod)(TArgs&), Timestamp::TimeDiff expireMillisecs)
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{
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return Expire<TArgs>(FunctionDelegate<TArgs, false>( NotifyMethod), expireMillisecs);
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}
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template <class TArgs>
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static FunctionDelegate<TArgs, true, true> delegate(void (*NotifyMethod)(const void*, TArgs&))
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{
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return FunctionDelegate<TArgs, true, true>(NotifyMethod);
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}
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template <class TArgs>
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static FunctionDelegate<TArgs, true, false> delegate(void (*NotifyMethod)(void*, TArgs&))
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{
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return FunctionDelegate<TArgs, true, false>(NotifyMethod);
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}
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template <class TArgs>
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static FunctionDelegate<TArgs, false> delegate(void (*NotifyMethod)(TArgs&))
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{
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return FunctionDelegate<TArgs, false>(NotifyMethod);
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}
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2006-10-23 17:48:43 +02:00
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} // namespace Poco
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#endif
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