/*=========================================================================

   Program: ParaView
   Module:    pqScalarSetModel.cxx

   Copyright (c) 2005-2008 Sandia Corporation, Kitware Inc.
   All rights reserved.

   ParaView is a free software; you can redistribute it and/or modify it
   under the terms of the ParaView license version 1.2. 

   See License_v1.2.txt for the full ParaView license.
   A copy of this license can be obtained by contacting
   Kitware Inc.
   28 Corporate Drive
   Clifton Park, NY 12065
   USA

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

=========================================================================*/

#include "pqScalarSetModel.h"

#include <QList>


////////////////////////////////////////////////////////////////////////////
// pqScalarSetModel::pqImplementation

class pqScalarSetModel::pqImplementation
{
public:
  pqImplementation() :
    PreserveOrder(false),
    Format('g'),
    Precision(3)
  {
  }
  
  QList<double> Values;
  bool PreserveOrder;
  char Format;
  int Precision;
};

/////////////////////////////////////////////////////////////////////////////
// pqScalarSetModel

pqScalarSetModel::pqScalarSetModel() :
  Implementation(new pqImplementation())
{
}

//-----------------------------------------------------------------------------
pqScalarSetModel::~pqScalarSetModel()
{
  delete this->Implementation;
}

//-----------------------------------------------------------------------------
void pqScalarSetModel::clear()
{
  this->Implementation->Values.clear();
  emit layoutChanged();
}

//-----------------------------------------------------------------------------
QModelIndex pqScalarSetModel::insert(double value)
{
  QModelIndex mindex;
  if (this->Implementation->PreserveOrder)
    {
    this->Implementation->Values.append(value);
    mindex = this->createIndex(this->Implementation->Values.size()-1, 0);
    }
  else
    {
    // if value is already contained, we don't add it.
    int curindex = this->Implementation->Values.indexOf(value);
    if (curindex == -1)
      {
      // insert at correct place.
      for (int cc=0; cc < this->Implementation->Values.size(); cc++)
        {
        if (this->Implementation->Values[cc] > value)
          {
          curindex = cc;
          this->Implementation->Values.insert(curindex, value);
          break;
          }
        }
      if (curindex == -1)
        {
        curindex = this->Implementation->Values.size();
        this->Implementation->Values.append(value);
        }
      }
    mindex = this->createIndex(curindex, 0);
    }

  /*
  vtkstd::pair<vtkstd::set<double>::iterator,bool> iter=this->Implementation->Values.insert(value);
  int idx=vtkstd::distance(this->Implementation->Values.begin(),iter.first);
  QModelIndex mindex=this->createIndex(idx,0);
  */
  emit layoutChanged();
  return mindex;
}

//-----------------------------------------------------------------------------
void pqScalarSetModel::erase(double value)
{
  this->Implementation->Values.removeAll(value);
  emit layoutChanged();
}

//-----------------------------------------------------------------------------
void pqScalarSetModel::erase(int row)
{
  if(row < 0 || row >= static_cast<int>(this->Implementation->Values.size()))
    {
    return;
    }
    
  this->Implementation->Values.removeAt(row);
  emit layoutChanged();
}

//-----------------------------------------------------------------------------
const QList<double> pqScalarSetModel::values()
{
  return this->Implementation->Values;
}

//-----------------------------------------------------------------------------
void pqScalarSetModel::setFormat(char f, int precision)
{
  this->Implementation->Format = f;
  this->Implementation->Precision = precision;
  emit dataChanged(this->index(0), 
    this->index(this->Implementation->Values.size() - 1));
}

//-----------------------------------------------------------------------------
QVariant pqScalarSetModel::data(const QModelIndex& i, int role) const
{
  if(!i.isValid())
    return QVariant();
  
  if(i.row() < 0 || i.row() >= static_cast<int>(this->Implementation->Values.size()))
    return QVariant();
  
  switch(role)
    {
    case Qt::EditRole:
    case Qt::DisplayRole:
      {
      QList<double>::iterator iterator = this->Implementation->Values.begin();
      iterator += i.row();
      return QString::number(
        *iterator, this->Implementation->Format, this->Implementation->Precision);
      }
    }
    
  return QVariant();
}

//-----------------------------------------------------------------------------
Qt::ItemFlags pqScalarSetModel::flags(const QModelIndex& /*i*/) const
{
  return Qt::ItemIsEditable | Qt::ItemIsEnabled | Qt::ItemIsSelectable;
}

//-----------------------------------------------------------------------------
int pqScalarSetModel::rowCount(const QModelIndex& /*parent*/) const
{
  return Implementation->Values.size();
}

//-----------------------------------------------------------------------------
bool pqScalarSetModel::setData(const QModelIndex& i, const QVariant& value, int role)
{
  if(!i.isValid())
    return false;
    
  if(i.row() < 0 || i.row() >= static_cast<int>(this->Implementation->Values.size()))
    return false;
  
  switch(role)
    {
    case Qt::EditRole:
      {
      /*
      vtkstd::set<double>::iterator iterator = this->Implementation->Values.begin();
      vtkstd::advance(iterator, i.row());
      this->Implementation->Values.erase(iterator);
      this->Implementation->Values.insert(value.toDouble());
      */
      this->erase(i.row());
      this->insert(value.toDouble());
      emit dataChanged(this->index(0), this->index(this->Implementation->Values.size() - 1));
      emit layoutChanged();
      }
    }
    
  return true;
}

//-----------------------------------------------------------------------------
void pqScalarSetModel::setPreserveOrder(bool preserve)
{
  this->Implementation->PreserveOrder = preserve;
}

//-----------------------------------------------------------------------------
bool pqScalarSetModel::preserveOrder() const
{
  return this->Implementation->PreserveOrder;
}
