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/*
 * e-mail-formatter-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_MAIL_FORMATTER_EXTENSION_H
#define E_MAIL_FORMATTER_EXTENSION_H

#include <em-format/e-mail-part.h>
#include <em-format/e-mail-formatter.h>
#include <camel/camel.h>
#include <gtk/gtk.h>

/* Standard GObject macros */
#define E_TYPE_MAIL_FORMATTER_EXTENSION \
    (e_mail_formatter_extension_get_type ())
#define E_MAIL_FORMATTER_EXTENSION(obj) \
    (G_TYPE_CHECK_INSTANCE_CAST \
    ((obj), E_TYPE_MAIL_FORMATTER_EXTENSION, EMailFormatterExtension))
#define E_MAIL_FORMATTER_EXTENSION_INTERFACE(cls) \
    (G_TYPE_CHECK_CLASS_CAST \
    ((cls), E_TYPE_MAIL_FORMATTER_EXTENSION, EMailFormatterExtensionInterface))
#define E_IS_MAIL_FORMATTER_EXTENSION(obj) \
    (G_TYPE_CHECK_INSTANCE_TYPE \
    ((obj), E_TYPE_MAIL_FORMATTER_EXTENSION))
#define E_IS_MAIL_FORMATTER_EXTENSION_INTERFACE(cls) \
    (G_TYPE_CHECK_CLASS_TYPE \
    ((cls), E_TYPE_MAIL_FORMATTER_EXTENSION))
#define E_MAIL_FORMATTER_EXTENSION_GET_INTERFACE(obj) \
    (G_TYPE_INSTANCE_GET_INTERFACE \
    ((obj), E_TYPE_MAIL_FORMATTER_EXTENSION, EMailFormatterExtensionInterface))

#define EMF_EXTENSION_GET_FORMATTER(e) \
    E_MAIL_FORMATTER (e_extension_get_extensible (E_EXTENSION (e)))

G_BEGIN_DECLS

typedef struct _EMailFormatterExtension EMailFormatterExtension;
typedef struct _EMailFormatterExtensionInterface EMailFormatterExtensionInterface;

struct _EMailFormatterExtensionInterface {
    GTypeInterface parent_interface;

    /* This is a NULL-terminated array of supported MIME types.
     * The MIME types can be exact (e.g. "text/plain") or use a
     * wildcard (e.g. "text/ *"). */
    const gchar **mime_types;

    gboolean    (*format)   (EMailFormatterExtension *extension,
                     EMailFormatter *formatter,
                     EMailFormatterContext *context,
                     EMailPart *part,
                     CamelStream *stream,
                     GCancellable *cancellable);

    GtkWidget * (*get_widget)   (EMailFormatterExtension *extension,
                     EMailPartList *context,
                     EMailPart *part,
                     GHashTable *params);

    const gchar *   (*get_display_name)
                    (EMailFormatterExtension *extension);

    const gchar *   (*get_description)
                    (EMailFormatterExtension *extension);

};

GType       e_mail_formatter_extension_get_type
                        (void);

gboolean    e_mail_formatter_extension_format
                        (EMailFormatterExtension *extension,
                         EMailFormatter *formatter,
                         EMailFormatterContext *context,
                         EMailPart *part,
                         CamelStream *stream,
                         GCancellable *cancellable);

gboolean    e_mail_formatter_extension_has_widget
                        (EMailFormatterExtension *extension);

GtkWidget * e_mail_formatter_extension_get_widget
                        (EMailFormatterExtension *extension,
                         EMailPartList *context,
                         EMailPart *part,
                         GHashTable *params);

const gchar *   e_mail_formatter_extension_get_display_name
                        (EMailFormatterExtension *extension);

const gchar *   e_mail_formatter_extension_get_description
                        (EMailFormatterExtension *extension);

G_END_DECLS

#endif /* E_MAIL_FORMATTER_EXTENSION_H */