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/*
 * e-extension.h
 *
 * This program 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 of the License, or (at your option) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 */

#ifndef E_EXTENSION_H
#define E_EXTENSION_H

#include <glib-object.h>
#include <e-util/e-extensible.h>

/* Standard GObject macros */
#define E_TYPE_EXTENSION \
    (e_extension_get_type ())
#define E_EXTENSION(obj) \
    (G_TYPE_CHECK_INSTANCE_CAST \
    ((obj), E_TYPE_EXTENSION, EExtension))
#define E_EXTENSION_CLASS(cls) \
    (G_TYPE_CHECK_CLASS_CAST \
    ((cls), E_TYPE_EXTENSION, EExtensionClass))
#define E_IS_EXTENSION(obj) \
    (G_TYPE_CHECK_INSTANCE_TYPE \
    ((obj), E_TYPE_EXTENSION))
#define E_IS_EXTENSION_CLASS(cls) \
    (G_TYPE_CHECK_CLASS_TYPE \
    ((cls), E_TYPE_EXTENSION))
#define E_EXTENSION_GET_CLASS(obj) \
    (G_TYPE_INSTANCE_GET_CLASS \
    ((obj), E_TYPE_EXTENSION, EExtensionClass))

G_BEGIN_DECLS

typedef struct _EExtension EExtension;
typedef struct _EExtensionClass EExtensionClass;
typedef struct _EExtensionPrivate EExtensionPrivate;

struct _EExtension {
    GObject parent;
    EExtensionPrivate *priv;
};

struct _EExtensionClass {
    GObjectClass parent_class;

    /* The type to extend. */
    GType extensible_type;
};

GType       e_extension_get_type        (void);
EExtensible *   e_extension_get_extensible  (EExtension *extension);

G_END_DECLS

#endif /* E_EXTENSION_H */