OCCT

// Created on: 1999-06-11
// Created by: Vladislav ROMASHKO
// Copyright (c) 1999-1999 Matra Datavision
// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.

#include <Standard_GUID.hxx>
#include <Standard_Type.hxx>
#include <TCollection_ExtendedString.hxx>
#include <TDF.hxx>
#include <TFunction_Driver.hxx>
#include <NCollection_DataMap.hxx>
#include <TFunction_DriverTable.hxx>

IMPLEMENT_STANDARD_RTTIEXT(TFunction_DriverTable, Standard_Transient)

static occ::handle<TFunction_DriverTable> DT;

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

occ::handle<TFunction_DriverTable> TFunction_DriverTable::Get()
{
  if (DT.IsNull())
  {
    DT = new TFunction_DriverTable;
  }
  return DT;
}

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

TFunction_DriverTable::TFunction_DriverTable() = default;

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

bool TFunction_DriverTable::AddDriver(const Standard_GUID&                 guid,
                                      const occ::handle<TFunction_Driver>& driver,
                                      const int                            thread)
{
  if (thread == 0)
  {
    return myDrivers.Bind(guid, driver);
  }
  else if (thread > 0)
  {
    if (myThreadDrivers.IsNull())
    {
      // Create a new table for thread-drivers.
      myThreadDrivers =
        new NCollection_HArray1<NCollection_DataMap<Standard_GUID, occ::handle<TFunction_Driver>>>(
          1,
          thread);
    }
    else if (myThreadDrivers->Upper() < thread)
    {
      // Create a bigger table for thread-drivers.
      occ::handle<
        NCollection_HArray1<NCollection_DataMap<Standard_GUID, occ::handle<TFunction_Driver>>>>
        new_dt = new NCollection_HArray1<
          NCollection_DataMap<Standard_GUID, occ::handle<TFunction_Driver>>>(1, thread);
      // Copy old table to the expanded (new) one.
      int i = 1, old_upper = myThreadDrivers->Upper();
      for (; i <= old_upper; i++)
      {
        const NCollection_DataMap<Standard_GUID, occ::handle<TFunction_Driver>>& t =
          myThreadDrivers->Value(i);
        NCollection_DataMap<Standard_GUID, occ::handle<TFunction_Driver>>::Iterator itrt(t);
        for (; itrt.More(); itrt.Next())
        {
          new_dt->ChangeValue(i).Bind(itrt.Key(), itrt.Value());
        }
      } // for...
      myThreadDrivers = new_dt;
    } // else...
    return myThreadDrivers->ChangeValue(thread).Bind(guid, driver);
  }
  return false;
}

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

bool TFunction_DriverTable::HasDriver(const Standard_GUID& guid, const int thread) const
{
  if (thread == 0)
  {
    return myDrivers.IsBound(guid);
  }
  else if (thread > 0 && !myThreadDrivers.IsNull() && myThreadDrivers->Upper() >= thread)
  {
    return myThreadDrivers->Value(thread).IsBound(guid);
  }
  return false;
}

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

bool TFunction_DriverTable::FindDriver(const Standard_GUID&           guid,
                                       occ::handle<TFunction_Driver>& driver,
                                       const int                      thread) const
{
  if (thread == 0)
  {
    if (myDrivers.IsBound(guid))
    {
      driver = myDrivers.Find(guid);
      return true;
    }
  }
  else if (thread > 0 && !myThreadDrivers.IsNull() && myThreadDrivers->Upper() >= thread)
  {
    if (myThreadDrivers->Value(thread).IsBound(guid))
    {
      driver = myThreadDrivers->Value(thread).Find(guid);
      return true;
    }
  }
  return false;
}

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

Standard_OStream& TFunction_DriverTable::Dump(Standard_OStream& anOS) const
{
  NCollection_DataMap<Standard_GUID, occ::handle<TFunction_Driver>>::Iterator itr(myDrivers);
  for (; itr.More(); itr.Next())
  {
    itr.Key().ShallowDump(anOS);
    anOS << "\t";
    TCollection_ExtendedString es;
    TDF::ProgIDFromGUID(itr.Key(), es);
    anOS << es << "\n";
  }
  return anOS;
}

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

bool TFunction_DriverTable::RemoveDriver(const Standard_GUID& guid, const int thread)
{
  if (thread == 0)
  {
    return myDrivers.UnBind(guid);
  }
  else if (thread > 0 && !myThreadDrivers.IsNull() && myThreadDrivers->Upper() >= thread)
  {
    myThreadDrivers->ChangeValue(thread).UnBind(guid);
  }
  return false;
}

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

void TFunction_DriverTable::Clear()
{
  myDrivers.Clear();
  if (!myThreadDrivers.IsNull())
  {
    myThreadDrivers.Nullify();
  }
}