#ifndef __bbtkWx_h_INCLUDED__
#define __bbtkWx_h_INCLUDED__

//===========================================================================
// Wx headers
#ifdef _USE_WXWIDGETS_
// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"
#include <wx/datetime.h>


#ifdef __BORLANDC__
#pragma hdrstop
#endif

#ifndef WX_PRECOMP
#include <wx/wx.h>
#endif

#ifdef __WXGTK__
# include <locale.h>
#endif //__WXGTK__
// EO Wx headers

#else //_USE_WXWIDGETS_

// define wxWindow
typedef void wxWindow;

#endif // EO _USE_WXWIDGETS_
//===========================================================================

//===========================================================================
#include "bbtkSystem.h"
//===========================================================================

//===========================================================================
// SIGNAL/SLOT MECHANISM 
// FOR bbtk WINDOWS CREATION/DESTRUCTION OBSERVATION 
// BBTKWXSIG
#include <boost/signal.hpp>
#include <boost/bind.hpp>
// \BBTKWXSIG
//===========================================================================

namespace bbtk
{

  //==================================================================
  /// Global wx handlers (cursor...)
  
// BBTKWXSIG
#define bbtkAddWxSignalObserver(METHOD)		\
  Wx::AddSignalObserver(boost::bind(&METHOD, this))
// \BBTKWXSIG

  struct BBTK_EXPORT Wx
  {	
  public:
    // BBTKWXSIG
    typedef boost::signals::trackable SignalObserver;
    typedef boost::signal<void ()>  Signal_type;
    typedef Signal_type::slot_function_type Slot_function_type;
    // \BBTKWXSIG

    /*
    static void ResetCursor();
    static void BeginBusyCursor(); 
    static void EndBusyCursor();
    */

    static void LoopUntilAllWindowsClose();

    class BusyCursor
    {
    public:
      BusyCursor();
      ~BusyCursor();
    };

    static void SetTopWindowParent(wxWindow*);
    static void SetAutoDestroyTopWindow(bool);

    /// Returns the creation time parent of all bbtk windows 
    /// (window can be reparented after creation)
    static wxWindow* GetTopWindow();
    static bool TopWindowExists();
    
    static void IncNbWindowsAlive();
    static void DecNbWindowsAlive();
    static int  GetNbWindowsAlive();
    static bool IsSomeWindowAlive();
    
    static void IncNbWindowsShown();
    static void DecNbWindowsShown();
    static int  GetNbWindowsShown();
    static bool IsSomeWindowShown();

    // BBTKWXSIG
    static void AddSignalObserver(Slot_function_type);
    // \BBTKWXSIG

  private:

    static void CreateWxAppIfNeeded();
    static void DestroyWxAppIfNeeded();

    static void CreateTopWindowIfNeeded();
    static void DestroyTopWindowIfNeeded();

    /// Sets the creation time parent of all bbtk windows
    static void SetTopWindow(wxWindow*);
  }; // struct Wx
  //==================================================================
  



#ifdef _USE_WXWIDGETS_
  //==================================================================
  /// Conversion std::string to wxString 
  inline wxString std2wx(const std::string& s){
    wxString wx;
    const char* my_string=s.c_str();
    wxMBConvUTF8 *wxconv= new wxMBConvUTF8();
    wx=wxString(wxconv->cMB2WC(my_string),wxConvUTF8);
    delete wxconv;
    // test if conversion works of not. In case it fails convert from Ascii
    if(wx.length()==0)
      wx=wxString(wxString::FromAscii(s.c_str()));
    return wx;
  }
  //==================================================================

  //==================================================================
  /// Conversion wxString to std::string
  inline std::string wx2std(const wxString& s){
    std::string s2;
    if(s.wxString::IsAscii()) {
      s2=s.wxString::ToAscii();
    } else {
      const wxWX2MBbuf tmp_buf = wxConvCurrent->cWX2MB(s);
      const char *tmp_str = (const char*) tmp_buf;
      s2=std::string(tmp_str, strlen(tmp_str));
    }
    return s2;
  }
  //==================================================================
#endif // EO _USE_WXWIDGETS

  
} // namespace bbtk
  

#endif // EO __bbtkWx_h_INCLUDED__