/*

Copyright (C) 2011-2014 Michael Goffioul

This file is part of Octave.

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 3 of the License, 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, see
<http://www.gnu.org/licenses/>.

*/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <QComboBox>

#include "Container.h"
#include "PopupMenuControl.h"
#include "Utils.h"

//////////////////////////////////////////////////////////////////////////////

namespace QtHandles
{

//////////////////////////////////////////////////////////////////////////////

PopupMenuControl* PopupMenuControl::create (const graphics_object& go)
{
  Object* parent = Object::parentObject (go);

  if (parent)
    {
      Container* container = parent->innerContainer ();

      if (container)
	return new PopupMenuControl (go, new QComboBox (container));
    }

  return 0;
}

//////////////////////////////////////////////////////////////////////////////

PopupMenuControl::PopupMenuControl (const graphics_object& go, QComboBox *box)
     : BaseControl (go, box), m_blockUpdate (false)
{
  uicontrol::properties& up = properties<uicontrol> ();

  box->addItems (Utils::fromStdString (up.get_string_string ()).split ('|'));

  connect (box, SIGNAL (currentIndexChanged (int)),
	   SLOT (currentIndexChanged (int)));
}

//////////////////////////////////////////////////////////////////////////////

PopupMenuControl::~PopupMenuControl (void)
{
}

//////////////////////////////////////////////////////////////////////////////

void PopupMenuControl::update (int pId)
{
  uicontrol::properties& up = properties<uicontrol> ();
  QComboBox* box = qWidget<QComboBox> ();

  switch (pId)
    {
    case uicontrol::properties::ID_STRING:
      m_blockUpdate = true;
	{
	  int oldCurrent = box->currentIndex ();

	  box->clear ();
	  box->addItems (Utils::fromStdString
			 (up.get_string_string ()).split ('|'));
	  if (box->count() > 0
	      && oldCurrent >= 0
	      && oldCurrent < box->count ())
	    {
	      box->setCurrentIndex (oldCurrent);
	    }
	  else
	    {
	      gh_manager::post_set (m_handle, "value",
				    octave_value (box->count () > 0
						  ? 1.0 : 0.0),
				    false);
	    }
	}
      m_blockUpdate = false;
      break;
    case uicontrol::properties::ID_VALUE:
	{
	  Matrix value = up.get_value ().matrix_value ();

	  if (value.numel () > 0)
	    {
	      int newIndex = int (value(0)) - 1;

	      if (newIndex >= 0 && newIndex < box->count ()
		  && newIndex != box->currentIndex ())
		{
		  box->setCurrentIndex (newIndex);
		}
	    }
	}
      break;
    default:
      BaseControl::update (pId);
      break;
    }
}

//////////////////////////////////////////////////////////////////////////////

void PopupMenuControl::currentIndexChanged (int index)
{
  if (! m_blockUpdate)
    {
      gh_manager::post_set (m_handle, "value",
			    octave_value (double (index + 1)),
			    false);
      gh_manager::post_callback (m_handle, "callback");
    }
}

//////////////////////////////////////////////////////////////////////////////

}; // namespace QtHandles