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136 lines
3.7 KiB
C++
136 lines
3.7 KiB
C++
//
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// PriorityDelegate.h
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//
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// $Id: //poco/1.2/Foundation/include/Poco/PriorityDelegate.h#1 $
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//
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// Library: Foundation
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// Package: Events
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// Module: PriorityDelegate
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//
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// Implementation of the PriorityDelegate 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_PriorityDelegate_INCLUDED
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#define Foundation_PriorityDelegate_INCLUDED
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#include "Poco/Foundation.h"
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#include "Poco/AbstractPriorityDelegate.h"
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#include "Poco/PriorityExpire.h"
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namespace Poco {
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template <class TObj, class TArgs>
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class PriorityDelegate: public AbstractPriorityDelegate<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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PriorityDelegate(TObj* obj, NotifyMethod method, int prio):
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_receiverObject(obj),
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_receiverMethod(method),
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_priority(prio)
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{
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}
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PriorityDelegate(const PriorityDelegate& delegate):
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_receiverObject(delegate._receiverObject),
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_receiverMethod(delegate._receiverMethod),
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_priority(delegate._priority)
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{
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}
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PriorityDelegate& operator = (const PriorityDelegate& delegate)
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{
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if (&delegate != this)
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{
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_receiverObject = delegate._receiverObject;
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_receiverMethod = delegate._receiverMethod;
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_priority = delegate._priority;
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}
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return *this;
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}
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~PriorityDelegate()
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{
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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; // per default the delegate never expires
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}
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AbstractPriorityDelegate<TArgs>* clone() const
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{
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return new PriorityDelegate(*this);
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}
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bool operator < (const AbstractPriorityDelegate<TArgs>& other) const
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{
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const PriorityDelegate* pOther = dynamic_cast<const PriorityDelegate*>(&other);
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if (pOther == 0)
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{
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const PriorityExpire<TArgs>* pExpire = dynamic_cast<const PriorityExpire<TArgs>*>(&other);
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poco_check_ptr(pExpire);
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return this->operator < (pExpire->getDelegate());
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}
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if (_priority < pOther->_priority)
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{
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return true;
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}
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if (_priority > pOther->_priority)
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{
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return false;
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}
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return _receiverObject < pOther->_receiverObject;
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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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int _priority;
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private:
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PriorityDelegate();
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};
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} // namespace Poco
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#endif
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