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//
// AbstractPriorityDelegate.h
//
// $Id: //poco/1.3/Foundation/include/Poco/AbstractPriorityDelegate.h#1 $
//
// Library: Foundation
// Package: Events
// Module: AbstractPriorityDelegate
//
// Implementation of the AbstractPriorityDelegate 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_AbstractPriorityDelegate_INCLUDED
#define Foundation_AbstractPriorityDelegate_INCLUDED
#include "Poco/Foundation.h"
namespace Poco {
template <class TArgs>
class AbstractPriorityDelegate
/// Interface for PriorityDelegate and PriorityExpire.
/// Very similar to AbstractDelegate but having two separate files (no inheritance)
/// allows to have compile-time checks when registering an observer
/// instead of run-time checks.
{
public:
AbstractPriorityDelegate(void* pTarget, int prio):
_pTarget(pTarget),
_priority(prio)
{
}
AbstractPriorityDelegate(const AbstractPriorityDelegate& del):
_pTarget(del._pTarget),
_priority(del._priority)
{
}
virtual ~AbstractPriorityDelegate()
{
}
virtual bool notify(const void* sender, TArgs & arguments) = 0;
/// Returns false, if the Delegate is no longer valid, thus indicating an expire
virtual AbstractPriorityDelegate* clone() const = 0;
// Returns a deep-copy of the object.
bool operator < (const AbstractPriorityDelegate<TArgs>& other) const
/// Operator used for comparing AbstractPriorityDelegates in a collection.
{
if (_priority == other._priority)
{
return _pTarget < other._pTarget;
}
return (_priority < other._priority);
}
void* target() const
{
return _pTarget;
}
int priority() const
{
return _priority;
}
protected:
void* _pTarget;
int _priority;
};
} // namespace Poco
#endif
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