#include <list>

#include "base/logging.h"
#include "gfx/gl_lost_manager.h"

std::list<GfxResourceHolder *> *holders;

GfxResourceHolder::~GfxResourceHolder() {}

void register_gl_resource_holder(GfxResourceHolder *holder) {
	if (holders) {
		holders->push_back(holder);
	} else {
		WLOG("GL resource holder not initialized, cannot register resource");
	}
}
void unregister_gl_resource_holder(GfxResourceHolder *holder) {
	if (holders) {
		holders->remove(holder);
	} else {
		WLOG("GL resource holder not initialized or already shutdown, cannot unregister resource");
	}
}

void gl_lost() {
	if (!holders) {
		WLOG("GL resource holder not initialized, cannot process lost request");
		return;
	}
	for (std::list<GfxResourceHolder *>::iterator iter = holders->begin(); iter != holders->end(); ++iter) {
		(*iter)->GLLost();
	}
}

void gl_lost_manager_init() {
	if (holders) {
		FLOG("Double GL lost manager init");
	}
	holders = new std::list<GfxResourceHolder *>();
}

void gl_lost_manager_shutdown() {
	if (!holders) {
		FLOG("Lost manager already shutdown");
	}
	delete holders;
	holders = 0;
}