// -*- c++ -*-
// Generated by gtkmmproc -- DO NOT MODIFY!
#ifndef _GIOMM_INITABLE_H
#define _GIOMM_INITABLE_H


#include <glibmm.h>

// -*- Mode: C++; indent-tabs-mode: nil; c-basic-offset: 2 -*-

/* Copyright (C) 2007 The giomm 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 <glibmm/interface.h>
#include <giomm/cancellable.h>


#ifndef DOXYGEN_SHOULD_SKIP_THIS
typedef struct _GInitableIface GInitableIface;
#endif /* DOXYGEN_SHOULD_SKIP_THIS */

#ifndef DOXYGEN_SHOULD_SKIP_THIS
typedef struct _GInitable GInitable;
typedef struct _GInitableClass GInitableClass;
#endif /* DOXYGEN_SHOULD_SKIP_THIS */


namespace Gio
{ class Initable_Class; } // namespace Gio
namespace Gio
{

/** Failable object initialization interface
 *
 * Initable is implemented by objects that can fail during initialization. If
 * an object implements this interface the init() function must be called as the
 * first thing after construction. If init() is not called, or if it returns an
 * error, all further operations on the object should fail, generally with a
 * G_IO_ERROR_NOT_INITIALIZED error.
 *
 * Users of objects implementing this are not intended to use the interface
 * method directly, instead it will be used automatically in various ways. For C
 * applications you generally just call g_initable_new() directly, or indirectly
 * via a foo_thing_new() wrapper. This will call g_initable_init() under the
 * cover, returning NULL and setting a GError on failure.
 *
 * For bindings in languages where the native constructor supports exceptions
 * the binding could check for objects implemention GInitable during normal
 * construction and automatically initialize them, throwing an exception on
 * failure.
 *
 * @newin{2,24}
 */

class Initable : public Glib::Interface
{
  
#ifndef DOXYGEN_SHOULD_SKIP_THIS

public:
  typedef Initable CppObjectType;
  typedef Initable_Class CppClassType;
  typedef GInitable BaseObjectType;
  typedef GInitableIface BaseClassType;

private:
  friend class Initable_Class;
  static CppClassType initable_class_;

  // noncopyable
  Initable(const Initable&);
  Initable& operator=(const Initable&);

protected:
  Initable(); // you must derive from this class

  /** Called by constructors of derived classes. Provide the result of 
   * the Class init() function to ensure that it is properly 
   * initialized.
   * 
   * @param interface_class The Class object for the derived type.
   */
  explicit Initable(const Glib::Interface_Class& interface_class);

public:
  // This is public so that C++ wrapper instances can be
  // created for C instances of unwrapped types.
  // For instance, if an unexpected C type implements the C interface. 
  explicit Initable(GInitable* castitem);

protected:
#endif /* DOXYGEN_SHOULD_SKIP_THIS */

public:
  virtual ~Initable();

  static void add_interface(GType gtype_implementer);

#ifndef DOXYGEN_SHOULD_SKIP_THIS
  static GType get_type()      G_GNUC_CONST;
  static GType get_base_type() G_GNUC_CONST;
#endif

  ///Provides access to the underlying C GObject.
  GInitable*       gobj()       { return reinterpret_cast<GInitable*>(gobject_); }

  ///Provides access to the underlying C GObject.  
  const GInitable* gobj() const { return reinterpret_cast<GInitable*>(gobject_); }

private:


protected:
  
  /** Initializes the object implementing the interface. This must be
   * done before any real use of the object after initial construction.
   * 
   * Implementations may also support cancellation. If @a cancellable is not <tt>0</tt>,
   * then initialization can be cancelled by triggering the cancellable object
   * from another thread. If the operation was cancelled, the error
   * IO_ERROR_CANCELLED will be returned. If @a cancellable is not <tt>0</tt> and
   * the object doesn't support cancellable initialization the error
   * IO_ERROR_NOT_SUPPORTED will be returned.
   * 
   * If this function is not called, or returns with an error then all
   * operations on the object should fail, generally returning the
   * error IO_ERROR_NOT_INITIALIZED.
   * 
   * Implementations of this method must be idempotent, i.e. multiple calls
   * to this function with the same argument should return the same results.
   * Only the first call initializes the object, further calls return the result
   * of the first call. This is so that its safe to implement the singleton
   * pattern in the GObject constructor function.
   * @param cancellable Optional Cancellable object, <tt>0</tt> to ignore.
   * @return <tt>true</tt> if successful. If an error has occurred, this function will
   * return <tt>false</tt> and set @a error appropriately if present.
   * 
   * @newin{2,22}.
   */
#ifdef GLIBMM_EXCEPTIONS_ENABLED
  void init(const Glib::RefPtr<Cancellable>& cancellable);
#else
  void init(const Glib::RefPtr<Cancellable>& cancellable, std::auto_ptr<Glib::Error>& error);
#endif //GLIBMM_EXCEPTIONS_ENABLED


  #ifdef GLIBMM_VFUNCS_ENABLED
  virtual bool init_vfunc(const Glib::RefPtr<Cancellable>& cancellable, GError** error);
#endif //GLIBMM_VFUNCS_ENABLED


public:

public:
  //C++ methods used to invoke GTK+ virtual functions:
#ifdef GLIBMM_VFUNCS_ENABLED
#endif //GLIBMM_VFUNCS_ENABLED

protected:
  //GTK+ Virtual Functions (override these to change behaviour):
#ifdef GLIBMM_VFUNCS_ENABLED
#endif //GLIBMM_VFUNCS_ENABLED

  //Default Signal Handlers::
#ifdef GLIBMM_DEFAULT_SIGNAL_HANDLERS_ENABLED
#endif //GLIBMM_DEFAULT_SIGNAL_HANDLERS_ENABLED


};

} // namespace Gio


namespace Glib
{
  /** A Glib::wrap() method for this object.
   * 
   * @param object The C instance.
   * @param take_copy False if the result should take ownership of the C instance. True if it should take a new copy or ref.
   * @result A C++ instance that wraps this C instance.
   *
   * @relates Gio::Initable
   */
  Glib::RefPtr<Gio::Initable> wrap(GInitable* object, bool take_copy = false);

} // namespace Glib


#endif /* _GIOMM_INITABLE_H */

