/* $Id: datamodel.ccg,v 1.4 2004/03/30 18:40:28 murrayc Exp $ */
// -*- C++ -*- // this is for the .ccg, I realize gensig puts one in

/* datamodel.cc
 * 
 * Copyright 2003 libgdamm Development Team
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <libgda/gda-data-model.h>

namespace //anonymous
{

// This Signal Proxy allows the C++ coder to specify
// a sigc::slot instead of a static function.
class SignalProxy_ForEach
{
public:
  typedef Gnome::Gda::DataModel::SlotForEach SlotType;

  SignalProxy_ForEach(const SlotType& slot)
  : slot_(slot)
  {}
  
  ~SignalProxy_ForEach();

  static gboolean gtk_callback(GdaDataModel* model, GdaRow* row, gpointer user_data);

private:
  SlotType slot_;
};

SignalProxy_ForEach::~SignalProxy_ForEach()
{}

gboolean SignalProxy_ForEach::gtk_callback(GdaDataModel* model, GdaRow* row, gpointer user_data)
{
  SignalProxy_ForEach *const self = static_cast<SignalProxy_ForEach*>(user_data);

  try
  {
    return (self->slot_)(Glib::wrap(row));
  }
  catch(...)
  {
    Glib::exception_handlers_invoke();
  }

  return 0;
}

} // anonymous namespace

namespace Gnome
{

namespace Gda
{
  
void DataModel::foreach(const SlotForEach& slot)
{
  SignalProxy_ForEach proxy(slot);
  gda_data_model_foreach(gobj(), &SignalProxy_ForEach::gtk_callback, &proxy);
}         

} /* namespace Gda */

} /* namespace Gnome */