// TnzCore includes

#include "tsmartpointer.h"

// tcg includes

#include "tcg/tcg_list.h"

#include "tgldisplaylistsmanager.h"

//***********************************************************************************************

//    Local namespace - declarations

//***********************************************************************************************

namespace

{

struct ProxyReference {

	TGLDisplayListsProxy *m_proxy;

	int m_refCount;

	ProxyReference(TGLDisplayListsProxy *proxy) : m_proxy(proxy), m_refCount() {}

};

} // namespace

//***********************************************************************************************

//    Local namespace - globals

//***********************************************************************************************

namespace

{

tcg::list<proxyreference> m_proxies;</proxyreference>

std::map<tglcontext, int=""> m_proxyIdsByContext;</tglcontext,>

} // namespace

//***********************************************************************************************

//    TGLDisplayListsManager  implementation

//***********************************************************************************************

TGLDisplayListsManager *TGLDisplayListsManager::instance()

{

	static TGLDisplayListsManager theInstance;

	return &theInstance;

}

//-----------------------------------------------------------------------------------

int TGLDisplayListsManager::storeProxy(TGLDisplayListsProxy *proxy)

{

	return m_proxies.push_back(ProxyReference(proxy));

}

//-----------------------------------------------------------------------------------

void TGLDisplayListsManager::attachContext(int dlSpaceId, TGlContext context)

{

	m_proxyIdsByContext.insert(std::make_pair(context, dlSpaceId));

	++m_proxies[dlSpaceId].m_refCount;

}

//-----------------------------------------------------------------------------------

void TGLDisplayListsManager::releaseContext(TGlContext context)

{

	std::map<tglcontext, int="">::iterator it = m_proxyIdsByContext.find(context);</tglcontext,>

	assert(it != m_proxyIdsByContext.end());

	if (it == m_proxyIdsByContext.end())

		return;

	int dlSpaceId = it->second;

	if (--m_proxies[dlSpaceId].m_refCount <= 0) {

		// Notify observers first

		observers_container::const_iterator ot, oEnd = observers().end();

		for (ot = observers().begin(); ot != oEnd; ++ot)

			static_cast<observer *="">(*ot)->onDisplayListDestroyed(dlSpaceId);</observer>

		// Then, destroy stuff

		delete m_proxies[dlSpaceId].m_proxy;

		m_proxies.erase(dlSpaceId);

	}

	m_proxyIdsByContext.erase(it);

}

//-----------------------------------------------------------------------------------

int TGLDisplayListsManager::displayListsSpaceId(TGlContext context)

{

	std::map<tglcontext, int="">::iterator it = m_proxyIdsByContext.find(context);</tglcontext,>

	return (it == m_proxyIdsByContext.end()) ? -1 : it->second;

}

//-----------------------------------------------------------------------------------

TGLDisplayListsProxy *TGLDisplayListsManager::dlProxy(int dlSpaceId)

{

	return m_proxies[dlSpaceId].m_proxy;

}