/*
 *
 * Copyright (C) 2007, 2008, 2009 John P. Swensen
 *
 * OctaveGUI - A graphical user interface for Octave
 * Copyright (C) 2011 Jacob Dawid
 * jacob.dawid@googlemail.com
 * This file is as a part of OctaveDE.
 *
 * Octave is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2, or (at your option) any
 * later version.
 *
 * Octave is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Octave; see the file COPYING.  If not, write to the Free
 * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 *
 * */

#ifndef OCTAVELINK_H
#define OCTAVELINK_H

// Octave includes
#undef PACKAGE_BUGREPORT
#undef PACKAGE_NAME
#undef PACKAGE_STRING
#undef PACKAGE_TARNAME
#undef PACKAGE_VERSION
#undef PACKAGE_URL
#include <octave/config.h>
#include "octave/cmd-edit.h"
#include "octave/error.h"
#include "octave/file-io.h"
#include "octave/input.h"
#include "octave/lex.h"
#include "octave/load-path.h"
#include "octave/octave.h"
#include "octave/oct-hist.h"
#include "octave/oct-map.h"
#include "octave/oct-obj.h"
#include "octave/ops.h"
#include "octave/ov.h"
#include "octave/ov-usr-fcn.h"
#include "octave/symtab.h"
#include "octave/pt.h"
#include "octave/pt-eval.h"
#include "octave/config.h"
#include "octave/Range.h"
#include "octave/toplev.h"
#include "octave/procstream.h"
#include "octave/sighandlers.h"
#include "octave/debug.h"
#include "octave/sysdep.h"
#include "octave/ov.h"
#include "octave/unwind-prot.h"
#include "octave/utils.h"
#include "octave/variables.h"

// Standard includes
#include <iostream>
#include <string>
#include <vector>
#include <readline/readline.h>

// Qt includes
#include <QMutexLocker>
#include <QMutex>
#include <QFileInfo>
#include <QList>
#include <QString>
#include <QStringList>
#include <QVector>
#include <QSemaphore>
#include <QObject>
#include <QStringListModel>

typedef symbol_table::symbol_record SymbolRecord;
typedef octave_value OctaveValue;

/**
  * \class OctaveLink
  * Manages a link to an octave instance.
  */
class OctaveLink:QObject
{
  Q_OBJECT
public:
  static OctaveLink *
  instance ()
  {
    return &m_singleton;
  }
  static int
  readlineEventHook (void);
  static QString
  octaveValueAsQString (OctaveValue octaveValue);

  /**
    * Returns a copy of the current symbol table buffer.
    * \return Copy of the current symbol table buffer.
    */
  QList < SymbolRecord > currentSymbolTable ();

  void
  updateHistoryModel ();

  QStringListModel *
  historyModel ();

  void
  processOctaveServerData ();

  /**
    * Updates the current symbol table with new data
    * from octave.
    */
  void
  fetchSymbolTable ();

signals:
  void
  symbolTableChanged ();

private:
  OctaveLink ();
  ~OctaveLink ();

  /** Variable related member variables. */
  QSemaphore * m_symbolTableSemaphore;
  QList < SymbolRecord > m_symbolTableBuffer;

  /** History related member variables. */
  QStringListModel *m_historyModel;
  QSemaphore *m_historySemaphore;
  QStringList m_historyBuffer;
  int m_previousHistoryLength;
  static OctaveLink m_singleton;
};
#endif // OCTAVELINK_H