#include "X3D_SceneSaverStateVariables.h"
#include "X3DAbstractNode.h"
#include "X3D_X3DNode.h"

#include <algorithm>

using namespace std;

namespace X3DTK {
namespace X3D {

SceneSaverStateVariables::SceneSaverStateVariables()
: StateVariables(), _lineNumber(-1), _tab("  "), _nameID(0)
{
}

SceneSaverStateVariables::~SceneSaverStateVariables()
{
}

void SceneSaverStateVariables::init()
{
  _lineNumber = -1;
  _tab = SFString("  ");
}

void SceneSaverStateVariables::initNodes()
{
  _visitedNodes.clear();
}

void SceneSaverStateVariables::finish()
{
  _output.clear();
  _lineStack.clear();
  _hasUSEStack.clear();
  _visitedNodes.clear();
  _names.clear();
}

void SceneSaverStateVariables::addNode(SFNode N)
{
  _visitedNodes.push_back(N);
}

bool SceneSaverStateVariables::findNode(SFNode N)
{
  MFNode::const_iterator it = find(_visitedNodes.begin(), _visitedNodes.end(), N);
  if (it != _visitedNodes.end())
    return true;
    
  return false;
}

void SceneSaverStateVariables::newLine()
{
  ++_lineNumber;
  _output.push_back(SFString(_tab));
}

void SceneSaverStateVariables::pushCurrentLine()
{
  _lineStack.push_front(_lineNumber);
}

SFString &SceneSaverStateVariables::getCurrentLine()
{
  return _output.back();
}

SFString &SceneSaverStateVariables::getOpeningLine()
{
  return _output[_lineStack.front()];
}

void SceneSaverStateVariables::addTab()
{
  _tab += "  ";
}

void SceneSaverStateVariables::removeTab()
{
  _tab.erase(0, 2);
}

void SceneSaverStateVariables::addName(const SFString &name)
{
  _names.push_back(name);
}

SFString SceneSaverStateVariables::generateName()
{
  while (true)
  {
    SFString res = "_x3dtkN" + SFString::number(_nameID);
    bool found = false;
    for (MFString::const_iterator it = _names.begin(); it != _names.end(); ++it)
    {
      if (res == *it)
      {
        found = true;
        ++_nameID;
      }  
    }
    if (!found)
    {
      _names.push_back(res);
      return res;      
    }  
  }  
}

bool SceneSaverStateVariables::hasChild()
{
  return (_lineNumber == _lineStack.front());
}

void SceneSaverStateVariables::pushHasUSE(bool value)
{
  _hasUSEStack.push_front(value);
}

void SceneSaverStateVariables::popHasUSE()
{
  _hasUSEStack.pop_front();
}

void SceneSaverStateVariables::popLine()
{
  _lineStack.pop_front();
}

}
}