/* GIO - GLib Input, Output and Streaming Library

 * 

 * Copyright (C) 2006-2007 Red Hat, Inc.

 * Copyright (C) 2007 Sebastian Dröge.

 *

 * 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, see <http://www.gnu.org/licenses/>.

 *

 * Authors: Alexander Larsson <alexl@redhat.com>

 *          John McCutchan <john@johnmccutchan.com> 

 *          Sebastian Dröge <slomo@circular-chaos.org>

 *          Ryan Lortie <desrt@desrt.ca>

 */

#include "config.h"

#include "ginotifyfilemonitor.h"

#include <gio/giomodule.h>

#define USE_INOTIFY 1

#include "inotify-helper.h"

struct _GInotifyFileMonitor

{

  GLocalFileMonitor parent_instance;

  inotify_sub *sub;

};

G_DEFINE_TYPE_WITH_CODE (GInotifyFileMonitor, g_inotify_file_monitor, G_TYPE_LOCAL_FILE_MONITOR,

                         g_io_extension_point_implement (G_LOCAL_FILE_MONITOR_EXTENSION_POINT_NAME,

                                                         g_define_type_id, "inotify", 20))

static gboolean

g_inotify_file_monitor_is_supported (void)

{

  return _ih_startup ();

}

static void

g_inotify_file_monitor_start (GLocalFileMonitor  *local_monitor,

                              const gchar        *dirname,

                              const gchar        *basename,

                              const gchar        *filename,

                              GFileMonitorSource *source)

{

  GInotifyFileMonitor *inotify_monitor = G_INOTIFY_FILE_MONITOR (local_monitor);

  gboolean success;

  /* should already have been called, from is_supported() */

  success = _ih_startup ();

  g_assert (success);

  inotify_monitor->sub = _ih_sub_new (dirname, basename, filename != NULL, source);

  _ih_sub_add (inotify_monitor->sub);

}

static gboolean

g_inotify_file_monitor_cancel (GFileMonitor *monitor)

{

  GInotifyFileMonitor *inotify_monitor = G_INOTIFY_FILE_MONITOR (monitor);

  if (inotify_monitor->sub)

    {

      _ih_sub_cancel (inotify_monitor->sub);

      _ih_sub_free (inotify_monitor->sub);

      inotify_monitor->sub = NULL;

    }

  return TRUE;

}

static void

g_inotify_file_monitor_finalize (GObject *object)

{

  GInotifyFileMonitor *inotify_monitor = G_INOTIFY_FILE_MONITOR (object);

  /* must surely have been cancelled already */

  g_assert (!inotify_monitor->sub);

  G_OBJECT_CLASS (g_inotify_file_monitor_parent_class)->finalize (object);

}

static void

g_inotify_file_monitor_init (GInotifyFileMonitor* monitor)

{

}

static void

g_inotify_file_monitor_class_init (GInotifyFileMonitorClass* klass)

{

  GObjectClass* gobject_class = G_OBJECT_CLASS (klass);

  GFileMonitorClass *file_monitor_class = G_FILE_MONITOR_CLASS (klass);

  GLocalFileMonitorClass *local_file_monitor_class = G_LOCAL_FILE_MONITOR_CLASS (klass);

  local_file_monitor_class->is_supported = g_inotify_file_monitor_is_supported;

  local_file_monitor_class->start = g_inotify_file_monitor_start;

  local_file_monitor_class->mount_notify = TRUE;

  file_monitor_class->cancel = g_inotify_file_monitor_cancel;

  gobject_class->finalize = g_inotify_file_monitor_finalize;

}