/* variablesmap.cc
 *
 * Copyright (C) 2002 The libglademm Development Team
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <glom/variablesmap.h>
#include <gtkmm/togglebutton.h>
#include <gtkmm/entry.h>
#include <gtkmm/calendar.h>
#include <gtkmm/scale.h>
#include <gtkmm/comboboxentry.h>

namespace Glom
{

VariablesMap::VariablesMap(const Glib::RefPtr<Gtk::Builder>& builder)
: m_builder(builder)
{
}

VariablesMap::~VariablesMap()
{
}


void VariablesMap::connect_widget(const Glib::ustring& widget_name, bool& variable)
{
  Gtk::ToggleButton* pToggleButton = 0;
  m_builder->get_widget(widget_name, pToggleButton); //Glade::Xml will complain if it is not a ToggleButton.
  if(pToggleButton)
  {
    m_mapWidgetsToVariables[pToggleButton] = (void*)(&variable);
  }
}

void VariablesMap::connect_widget(const Glib::ustring& widget_name, Glib::ustring& variable)
{
  Gtk::Widget* pWidget = 0;
  m_builder->get_widget(widget_name, pWidget); 

  Gtk::Entry* pEntry = dynamic_cast<Gtk::Entry*>(pWidget); //it mange both Gtk::entry and Gtk::SpinButton
  Gtk::ComboBoxEntry* pComboBoxEntry = dynamic_cast<Gtk::ComboBoxEntry*>(pWidget);
  if(pEntry)
  {
    m_mapWidgetsToVariables[pEntry] = (void*)(&variable);
  }
  if(pComboBoxEntry)
  {
    m_mapWidgetsToVariables[pComboBoxEntry] = (void*)(&variable);
  }
}

void VariablesMap::connect_widget(const Glib::ustring& widget_name, double& variable)
{
  Gtk::Widget* pWidget = 0;
  m_builder->get_widget(widget_name, pWidget); 

  Gtk::Scale* pScale = dynamic_cast<Gtk::Scale*>(pWidget); 
  if(pScale)
  {
    m_mapWidgetsToVariables[pScale] = (void*)(&variable);
  }
}

void VariablesMap::connect_widget(const Glib::ustring& widget_name, Glib::Date& variable)
{
  Gtk::Widget* pWidget = 0;
  m_builder->get_widget(widget_name, pWidget); 

  Gtk::Calendar* pCalendar = dynamic_cast<Gtk::Calendar*>(pWidget); 
  if(pCalendar)
  {
    m_mapWidgetsToVariables[pCalendar] = (void*)(&variable);
  }
}

void VariablesMap::transfer_widgets_to_variables()
{
  if(validate_widgets()) //If the widgets' data is correct. Useful to override.
  {
    for(type_mapWidgetsToVariables::iterator iter =  m_mapWidgetsToVariables.begin(); iter != m_mapWidgetsToVariables.end(); ++iter)
    {
      transfer_one_widget(iter->first, true); //true = to_variable.
    }
  }
}

void VariablesMap::transfer_variables_to_widgets()
{
  for(type_mapWidgetsToVariables::iterator iter =  m_mapWidgetsToVariables.begin(); iter != m_mapWidgetsToVariables.end(); ++iter)
  {
    transfer_one_widget(iter->first, false); //false = to_widget.
  }
}


void VariablesMap::transfer_one_widget(Gtk::Widget* pWidget, bool to_variable)
{
  //Find the widget in the map:
  type_mapWidgetsToVariables::iterator iterFind = m_mapWidgetsToVariables.find(pWidget);
  if(iterFind != m_mapWidgetsToVariables.end())
  {
    //Get the variable for the widget:
    void* pVariable = iterFind->second;
    if(pVariable)
    {
      //Cast the variable appropriately and set it appropriately:
      Gtk::Entry* pEntry = dynamic_cast<Gtk::Entry*>(pWidget);
      Gtk::ComboBoxEntry* pComboBoxEntry = dynamic_cast<Gtk::ComboBoxEntry*>(pWidget);

      Gtk::ToggleButton* pToggleButton = dynamic_cast<Gtk::ToggleButton*>(pWidget); //CheckButtons and RadioButtons.
      Gtk::Scale* pScale = dynamic_cast<Gtk::Scale*>(pWidget); 
      Gtk::Calendar* pCalendar = dynamic_cast<Gtk::Calendar*>(pWidget); 

      if(pEntry)
      {
        Glib::ustring* pVar = (Glib::ustring*)(pVariable);

        if(to_variable)
          (*pVar) = pEntry->get_text();
        else
          pEntry->set_text(*pVar);
      }
      
      if(pComboBoxEntry)
      {
        Glib::ustring* pVar = (Glib::ustring*)(pVariable);
	Gtk::Entry* pIEntry = dynamic_cast<Gtk::Entry*>(pComboBoxEntry->get_child());

        if(to_variable)
        {
	      if(pIEntry) 
          	(*pVar) = pIEntry->get_text();
        } else {
	      if(pIEntry) 
	          pIEntry->set_text(*pVar);
	    }
      }
      
      if(pToggleButton)
      {
        bool* pVar = (bool*)(pVariable);

        if(to_variable)
          (*pVar) = pToggleButton->get_active();
        else
          pToggleButton->set_active(*pVar);
      }
      
      if(pScale)
      {
        double* pVar = (double*)(pVariable);

        if(to_variable)
          (*pVar) = pScale->get_value();
        else
          pScale->set_value(*pVar);
      }
      
      if(pCalendar)
      {
        Glib::Date* pVar = (Glib::Date*)(pVariable);

        if(to_variable)
        {
	       guint year,month,day;
	       pCalendar->get_date(year,month,day);
           (*pVar) = Glib::Date(day,(Glib::Date::Month)month,year);
        }
	    else
        {
          pCalendar->select_day(pVar->get_day());
          pCalendar->select_month(pVar->get_month(), pVar->get_year());
	    }
      }
    }
  }
}

bool VariablesMap::validate_widgets()
{
  //Override to add validation.
  //TODO: We could add some automatic data-range and text-length validation.
  return true;
}


} // namespace Glom

