SharedWidgetPtr.hpp

//
// TGUI - Texus's Graphical User Interface
// Copyright (C) 2012-2015 Bruno Van de Velde (vdv_b@tgui.eu)
//
// This software is provided 'as-is', without any express or implied warranty.
// In no event will the authors be held liable for any damages arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it freely,
// subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented;
// you must not claim that you wrote the original software.
// If you use this software in a product, an acknowledgment
// in the product documentation would be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such,
// and must not be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source distribution.
//


#ifndef TGUI_SHARED_WIDGET_PTR_HPP
#define TGUI_SHARED_WIDGET_PTR_HPP


#include <SFML/System/String.hpp>

#include <cstddef>


namespace tgui
{
 class Container;
 class Gui;


 template <class T>
 class SharedWidgetPtr
 {
 public:


 SharedWidgetPtr();


 SharedWidgetPtr(std::nullptr_t);


 SharedWidgetPtr(Gui& gui, const sf::String& widgetName = "");


 SharedWidgetPtr(Container& container, const sf::String& widgetName = "");


 SharedWidgetPtr(const SharedWidgetPtr<T>& copy);


 template <class U>
 SharedWidgetPtr(const SharedWidgetPtr<U>& copy);


 ~SharedWidgetPtr();


 SharedWidgetPtr<T>& operator=(const SharedWidgetPtr<T>& copy);


 template <class U>
 SharedWidgetPtr<T>& operator=(const SharedWidgetPtr<U>& copy);


 void init();


 void reset();


 bool operator!() const;


 template <typename U>
 bool operator ==(const SharedWidgetPtr<U>& right) const;


 bool operator ==(const SharedWidgetPtr<T>& right) const;


 template <typename U>
 friend bool operator ==(const SharedWidgetPtr<T>& left, const U* right)
 {
 return left.m_WidgetPtr == right;
 }


 friend bool operator ==(const SharedWidgetPtr<T>& left, const T* right)
 {
 return left.m_WidgetPtr == right;
 }


 template <typename U>
 friend bool operator ==(const U* left, const SharedWidgetPtr<T>& right)
 {
 return left == right.m_WidgetPtr;
 }


 friend bool operator ==(const T* left, const SharedWidgetPtr<T>& right)
 {
 return left == right.m_WidgetPtr;
 }


 template <typename U>
 bool operator !=(const SharedWidgetPtr<U>& right) const;


 bool operator !=(const SharedWidgetPtr<T>& right) const;


 template <typename U>
 friend bool operator !=(const SharedWidgetPtr<T>& left, const U* right)
 {
 return left.m_WidgetPtr != right;
 }


 friend bool operator !=(const SharedWidgetPtr<T>& left, const T* right)
 {
 return left.m_WidgetPtr != right;
 }


 template <typename U>
 friend bool operator !=(const U* left, const SharedWidgetPtr<T>& right)
 {
 return left != right.m_WidgetPtr;
 }


 friend bool operator !=(const T* left, const SharedWidgetPtr<T>& right)
 {
 return left != right.m_WidgetPtr;
 }


 T& operator*() const;


 T* operator->() const;


 T* get() const;


 unsigned int* getRefCount() const;


 SharedWidgetPtr clone() const;

 private:

 T* m_WidgetPtr;
 unsigned int* m_RefCount;

 };

}


#endif // TGUI_SHARED_WIDGET_PTR_HPP