#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);

}

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