// -*- 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>

_DEFS(giomm,gio)
_PINCLUDE(glibmm/private/interface_p.h)

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

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
{
  _CLASS_INTERFACE(Initable, GInitable, G_INITABLE, GInitableIface)

protected:
  _WRAP_METHOD(void init(const Glib::RefPtr<Cancellable>& cancellable{?}),
    g_initable_init, errthrow)

  _WRAP_VFUNC(bool init(const Glib::RefPtr<Cancellable>& cancellable, GError** error), "init")
};

} // namespace Gio
