/////////////////////////////////////////////////////////////////////////////
// Name:        helpbase.h
// Purpose:     Help system base classes
// Author:      Julian Smart
// Modified by:
// Created:     04/01/98
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart and Markus Holzem
// Licence:   	wxWindows license
/////////////////////////////////////////////////////////////////////////////

#ifndef _WX_HELPBASEH__
#define _WX_HELPBASEH__

#ifdef __GNUG__
#pragma interface "helpbase.h"
#endif

#include "wx/wx.h"

#if wxUSE_HELP

// Flags for SetViewer
#define wxHELP_NETSCAPE     1

// Defines the API for help controllers
class WXDLLEXPORT wxHelpControllerBase: public wxObject
{
  DECLARE_CLASS(wxHelpControllerBase)

 public:
  inline wxHelpControllerBase(void) {}
  inline ~wxHelpControllerBase(void) {};

  // Must call this to set the filename and server name.
  // server is only required when implementing TCP/IP-based
  // help controllers.
  virtual bool Initialize(const wxString& WXUNUSED(file), int WXUNUSED(server) ) { return FALSE; };
  virtual bool Initialize(const wxString& file) = 0;

  // Set viewer: only relevant to some kinds of controller
  virtual void SetViewer(const wxString& WXUNUSED(viewer), long WXUNUSED(flags) = 0) {}

  // If file is "", reloads file given  in Initialize
  virtual bool LoadFile(const wxString& file = "") = 0;
  virtual bool DisplayContents(void) = 0;
  virtual bool DisplaySection(int sectionNo) = 0;
  virtual bool DisplayBlock(long blockNo) = 0;
  virtual bool KeywordSearch(const wxString& k) = 0;

  virtual bool Quit(void) = 0;
  virtual void OnQuit(void) {};
};

#endif // wxUSE_HELP
#endif
    // _WX_HELPBASEH__