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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* camel-object.h: Base class for Camel */
/*
* Author:
* Dan Winship <danw@helixcode.com>
*
* Copyright 2000 Helix Code, Inc. (http://www.helixcode.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
#ifndef CAMEL_OBJECT_H
#define CAMEL_OBJECT_H 1
#ifdef __cplusplus
extern "C"
{
#pragma }
#endif /* __cplusplus } */
#include <stdlib.h> /* size_t */
#include <camel/camel-types.h>
#include <glib.h>
#ifdef G_DISABLE_CHECKS
#define CAMEL_CHECK_CAST( obj, ctype, ptype ) ((ptype *) obj)
#define CAMEL_CHECK_CLASS_CAST( class, ctype, ptype ) ((ptype *) class)
#define CAMEL_CHECK_TYPE( obj, ctype ) (TRUE)
#define CAMEL_CHECK_CLASS_TYPE( class, ctype ) (TRUE)
#else
#define CAMEL_CHECK_CAST( obj, ctype, ptype ) ((ptype *) camel_object_check_cast( (CamelObject *)(obj), (CamelType)(ctype) ))
#define CAMEL_CHECK_CLASS_CAST( class, ctype, ptype ) ((ptype *) camel_object_class_check_cast( (CamelObjectClass *)(class), (CamelType)(ctype) ))
#define CAMEL_CHECK_TYPE( obj, ctype ) (camel_object_is_of_type( (CamelObject *)(obj), (CamelType)(ctype) ))
#define CAMEL_CHECK_CLASS_TYPE( class, ctype ) (camel_object_class_is_of_type( (CamelObjectClass *)(class), (CamelType)(ctype) ))
#endif
#define CAMEL_INVALID_TYPE ((CamelType)0)
#define CAMEL_OBJECT_TYPE (camel_object_get_type ())
#define CAMEL_OBJECT(obj) (CAMEL_CHECK_CAST((obj), CAMEL_OBJECT_TYPE, CamelObject))
#define CAMEL_OBJECT_CLASS(k) (CAMEL_CHECK_CLASS_CAST ((k), CAMEL_OBJECT_TYPE, CamelObjectClass))
#define CAMEL_IS_OBJECT(o) (CAMEL_CHECK_TYPE((o), CAMEL_OBJECT_TYPE))
#define CAMEL_IS_OBJECT_CLASS(k) (CAMEL_CHECK_CLASS_TYPE((k), CAMEL_OBJECT_TYPE))
#define CAMEL_OBJECT_GET_CLASS(o) ((CamelObjectClass *)(CAMEL_OBJECT(o))->classfuncs)
#define CAMEL_OBJECT_GET_TYPE(o) ((CamelType)(CAMEL_OBJECT(o))->s.type)
typedef guint32 CamelType;
typedef struct _CamelObjectShared
{
guint32 magic;
CamelType type;
}
CamelObjectShared;
typedef struct _CamelObjectClass
{
CamelObjectShared s;
GHashTable *event_to_preplist;
}
CamelObjectClass;
typedef struct _CamelObject
{
CamelObjectShared s;
guint32 ref_count:31;
guint32 in_event:1;
CamelObjectClass *classfuncs;
GHashTable *event_to_hooklist;
}
CamelObject;
typedef void (*CamelObjectClassInitFunc) (CamelObjectClass *);
typedef void (*CamelObjectClassFinalizeFunc) (CamelObjectClass *);
typedef void (*CamelObjectInitFunc) (CamelObject *);
typedef void (*CamelObjectFinalizeFunc) (CamelObject *);
typedef gboolean (*CamelObjectEventPrepFunc) (CamelObject *,
gpointer);
typedef void (*CamelObjectEventHookFunc) (CamelObject *, gpointer,
gpointer);
/* The type system .... it's pretty simple..... */
void camel_type_init (void);
CamelType camel_type_register (CamelType parent, const gchar * name,
size_t instance_size,
size_t classfuncs_size,
CamelObjectClassInitFunc class_init,
CamelObjectClassFinalizeFunc
class_finalize,
CamelObjectInitFunc instance_init,
CamelObjectFinalizeFunc
instance_finalize);
CamelObjectClass *camel_type_get_global_classfuncs (CamelType type);
const gchar *camel_type_to_name (CamelType type);
CamelType camel_object_get_type (void);
CamelObject *camel_object_new (CamelType type);
void camel_object_ref (CamelObject * obj);
void camel_object_unref (CamelObject * obj);
CamelObject *camel_object_check_cast (CamelObject * obj,
CamelType ctype);
CamelObjectClass *camel_object_class_check_cast (CamelObjectClass *
class,
CamelType ctype);
gboolean camel_object_is_of_type (CamelObject * obj, CamelType ctype);
gboolean camel_object_class_is_of_type (CamelObjectClass * class,
CamelType ctype);
gchar *camel_object_describe (CamelObject * obj);
void camel_object_class_declare_event (CamelObjectClass * class,
const gchar * name,
CamelObjectEventPrepFunc prep);
void camel_object_hook_event (CamelObject * obj, const gchar * name,
CamelObjectEventHookFunc hook,
gpointer user_data);
void camel_object_unhook_event (CamelObject * obj, const gchar * name,
CamelObjectEventHookFunc hook,
gpointer user_data);
void camel_object_trigger_event (CamelObject * obj,
const gchar * name,
gpointer event_data);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* CAMEL_OBJECT_H */
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