/* ATK -  Accessibility Toolkit

 * Copyright 2001 Sun Microsystems Inc.

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Library General Public

 * License as published by the Free Software Foundation; either

 * version 2 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

 * Library General Public License for more details.

 *

 * You should have received a copy of the GNU Library General Public

 * License along with this library; if not, write to the

 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

 * Boston, MA 02111-1307, USA.

 */

#ifndef __ATK_STREAMABLE_CONTENT_H__

#define __ATK_STREAMABLE_CONTENT_H__

#if defined(ATK_DISABLE_SINGLE_INCLUDES) && !defined (__ATK_H_INSIDE__) && !defined (ATK_COMPILATION)

#error "Only <atk/atk.h> can be included directly."

#endif

#include <atk/atkobject.h>

G_BEGIN_DECLS

#define ATK_TYPE_STREAMABLE_CONTENT           (atk_streamable_content_get_type ())

#define ATK_IS_STREAMABLE_CONTENT(obj)        G_TYPE_CHECK_INSTANCE_TYPE ((obj), ATK_TYPE_STREAMABLE_CONTENT)

#define ATK_STREAMABLE_CONTENT(obj)           G_TYPE_CHECK_INSTANCE_CAST ((obj), ATK_TYPE_STREAMABLE_CONTENT, AtkStreamableContent)

#define ATK_STREAMABLE_CONTENT_GET_IFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), ATK_TYPE_STREAMABLE_CONTENT, AtkStreamableContentIface))

#ifndef _TYPEDEF_ATK_STREAMABLE_CONTENT

#define _TYPEDEF_ATK_STREAMABLE_CONTENT

typedef struct _AtkStreamableContent AtkStreamableContent;

#endif

typedef struct _AtkStreamableContentIface AtkStreamableContentIface;

struct _AtkStreamableContentIface

{

  GTypeInterface parent;

  /*

   * Get the number of mime types supported by this object

   */

  gint                      (* get_n_mime_types)  (AtkStreamableContent     *streamable);

  /*

   * Gets the specified mime type supported by this object.

   * The mime types are 0-based so the first mime type is 

   * at index 0, the second at index 1 and so on.  The mime-type

   * at index 0 should be considered the "default" data type for the stream.

   *

   * This assumes that the strings for the mime types are stored in the

   * AtkStreamableContent. Alternatively the const could be removed

   * and the caller would be responsible for calling g_free() on the

   * returned value.

   */

  const gchar*              (* get_mime_type)     (AtkStreamableContent     *streamable,

                                                   gint                     i);

  /*

   * One possible implementation for this method is that it constructs the

   * content appropriate for the mime type and then creates a temporary

   * file containing the content, opens the file and then calls

   * g_io_channel_unix_new_fd().

   */

  GIOChannel*               (* get_stream)        (AtkStreamableContent     *streamable,

                                                   const gchar              *mime_type);

/*

 * Returns a string representing a URI in IETF standard format

 * (see http://www.ietf.org/rfc/rfc2396.txt) from which the object's content

 * may be streamed in the specified mime-type.

 * If mime_type is NULL, the URI for the default (and possibly only) mime-type is

 * returned.

 *

 * returns NULL if the mime-type is not supported, or if no URI can be 

 * constructed.  Note that it is possible for get_uri to return NULL but for

 * get_stream to work nonetheless, since not all GIOChannels connect to URIs.

 */

    const  gchar*           (* get_uri)           (AtkStreamableContent     *streamable,

                                                   const gchar              *mime_type);

  AtkFunction               pad1;

  AtkFunction               pad2;

  AtkFunction               pad3;

};

ATK_AVAILABLE_IN_ALL

GType                  atk_streamable_content_get_type (void);

ATK_AVAILABLE_IN_ALL

gint                   atk_streamable_content_get_n_mime_types (AtkStreamableContent     *streamable);

ATK_AVAILABLE_IN_ALL

const gchar*           atk_streamable_content_get_mime_type    (AtkStreamableContent     *streamable,

                                                                gint                     i);

ATK_AVAILABLE_IN_ALL

GIOChannel*             atk_streamable_content_get_stream       (AtkStreamableContent     *streamable,

                                                                 const gchar              *mime_type);

ATK_AVAILABLE_IN_ALL

const gchar*           atk_streamable_content_get_uri          (AtkStreamableContent     *streamable,

                                                                const gchar              *mime_type);

G_END_DECLS

#endif /* __ATK_STREAMABLE_CONTENT_H__ */