#include "toonz/txshlevelhandle.h"

#include "toonz/txshlevel.h"

#include "toonz/txshsimplelevel.h"

#include "toonz/txsheet.h"

#include "toonz/txshcell.h"

//=============================================================================

// TXshLevelHandle

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

TXshLevelHandle::TXshLevelHandle()

	: m_level(0)

{

}

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

TXshLevelHandle::~TXshLevelHandle()

{

	if (m_level)

		m_level->release();

}

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

TXshLevel *TXshLevelHandle::getLevel() const

{

	return m_level;

}

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

TXshSimpleLevel *TXshLevelHandle::getSimpleLevel() const

{

	if (!m_level)

		return 0;

	else

		return m_level->getSimpleLevel();

}

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

void TXshLevelHandle::setLevel(TXshLevel *level)

{

	if (m_level == level)

		return;

	TXshLevel *oldLevel = m_level;

	m_level = level;

	if (level)

		level->addRef();

	bool levelExists = oldLevel ? oldLevel->getRefCount() > 1 : false;

	if (oldLevel)

		oldLevel->release();

	emit xshLevelSwitched(levelExists ? oldLevel : 0);

}

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