mirror of
https://github.com/pocoproject/poco.git
synced 2024-12-27 03:28:49 +01:00
97 lines
2.8 KiB
C++
97 lines
2.8 KiB
C++
//
|
|
// AbstractDelegate.h
|
|
//
|
|
// $Id: //poco/Main/Foundation/include/Poco/AbstractDelegate.h#3 $
|
|
//
|
|
// 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
|