#include "usuals.h"
#include "levelhandler.h"

LevelHandler::LevelHandler()
{

}

LevelHandler::~LevelHandler()
{
	clear();
}

void LevelHandler::clear()
{
	m_curLevel.release();
	m_topLevel.release();

	BaseHandler::clear();
}

void LevelHandler::startDocument(RtfReader* reader)
{
	BaseHandler::startDocument(reader);

	m_topLevel = new Level;
	m_curLevel = m_topLevel;
}

void LevelHandler::endDocument()
{
	BaseHandler::endDocument();
}

void LevelHandler::groupStart()
{
	BaseHandler::groupStart();
	ASSERT(m_curLevel);
	pushLevel();
}

void LevelHandler::groupEnd()
{
	ASSERT(m_curLevel);
	popLevel();
	BaseHandler::groupEnd();
}

DOM::Element LevelHandler::getElement()
{
	ASSERT(m_curLevel);
	return m_curLevel->getElement();
}

void LevelHandler::pushLevel()
{
	// Push a level on the stack
	m_curLevel = m_curLevel->pushLevel();
}

void LevelHandler::popLevel()
{
	// Pull a level off the stack
	LevelPtr level = m_curLevel->getPrevious();

	// TODO: report errors here
	if(level)
		m_curLevel = level;
}

void LevelHandler::rewindLevel(LevelPtr ptr)
{
	ASSERT(ptr != NULL);

	LevelPtr prev = ptr->getPrevious();

	if(prev != NULL)
		m_curLevel = prev;
	else
		m_curLevel = ptr;
}

LevelPtr LevelHandler::getLevel()
{
	return m_curLevel;
}