topical media & game development
lib-of-vs-libs-Poco-include-Poco-Util-OptionCallback.h / h
//
// OptionCallback.h
//
//
//
// Library: Util
// Package: Options
// Module: OptionCallback
//
// Definition of the OptionCallback class.
//
// 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 Util_OptionCallback_INCLUDED
define Util_OptionCallback_INCLUDED
include "Poco/Util/Util.h"
namespace Poco {
namespace Util {
class Util_API AbstractOptionCallback
Base class for OptionCallback.
{
public:
virtual void invoke(const std::string& name, const std::string& value) const = 0;
Invokes the callback member function.
virtual AbstractOptionCallback* clone() const = 0;
Creates and returns a copy of the object.
virtual ~AbstractOptionCallback();
Destroys the AbstractOptionCallback.
protected:
AbstractOptionCallback();
AbstractOptionCallback(const AbstractOptionCallback&);
};
template <class C>
class OptionCallback: public AbstractOptionCallback
This class is used as an argument to Option::callback().
It stores a pointer to an object and a pointer to a member
function of the object's class.
{
public:
typedef void (C::*Callback)(const std::string& name, const std::string& value);
OptionCallback(C* pObject, Callback method):
_pObject(pObject),
_method(method)
Creates the OptionCallback for the given object and member function.
{
poco_check_ptr (pObject);
}
OptionCallback(const OptionCallback& cb):
AbstractOptionCallback(cb),
_pObject(cb._pObject),
_method(cb._method)
Creates an OptionCallback from another one.
{
}
~OptionCallback()
Destroys the OptionCallback.
{
}
OptionCallback& operator = (const OptionCallback& cb)
{
if (&cb != this)
{
this->_pObject = cb._pObject;
this->_method = cb._method;
}
return *this;
}
void invoke(const std::string& name, const std::string& value) const
{
(_pObject->*_method)(name, value);
}
AbstractOptionCallback* clone() const
{
return new OptionCallback(_pObject, _method);
}
private:
OptionCallback();
C* _pObject;
Callback _method;
};
} } // namespace Poco::Util
endif // Util_OptionCallback_INCLUDED
(C) Æliens
04/09/2009
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