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#ifndef Fireworks_Core_FWEvePtr_h
#define Fireworks_Core_FWEvePtr_h
// -*- C++ -*-
//
// Package: Core
// Class : FWEvePtr
//
/**\class FWEvePtr FWEvePtr.h Fireworks/Core/interface/FWEvePtr.h
Description: Smart pointer which properly deals with TEveElement reference counting
Usage:
<usage>
*/
//
// Original Author: Chris Jones
// Created: Wed Nov 12 11:08:49 EST 2008
//
// system include files
#include <memory>
#include "TEveElement.h"
// user include files
// forward declarations
template <typename T>
class FWEvePtr {
public:
FWEvePtr() {}
explicit FWEvePtr(T* iElement) : m_container(new TEveElementList()) { m_container->AddElement(iElement); }
// ---------- const member functions ---------------------
T* operator->() const {
return m_container && m_container->HasChildren() ? static_cast<T*>(m_container->FirstChild()) : static_cast<T*>(0);
}
T& operator*() const { return *(operator->()); }
T* get() const { return (operator->()); }
operator bool() const { return m_container && m_container->HasChildren(); }
// ---------- static member functions --------------------
// ---------- member functions ---------------------------
void reset() { m_container.reset(); }
void reset(T* iNew) {
FWEvePtr<T> temp(iNew);
swap(temp);
}
void destroyElement() {
if (m_container) {
m_container->DestroyElements();
}
reset();
}
void swap(FWEvePtr<T>& iOther) { m_container.swap(iOther.m_container); }
private:
//FWEvePtr(const FWEvePtr&); // stop default
//const FWEvePtr& operator=(const FWEvePtr&); // stop default
// ---------- member data --------------------------------
std::shared_ptr<TEveElement> m_container;
};
#endif
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