/* This file is part of GEGL.

 *

 * 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 3 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/>.

 *

 * Copyright 2006,2007 Øyvind Kolås <pippin@gimp.org>

 */

#include "config.h"

#include <string.h>

#include <glib-object.h>

#include "gegl-buffer-types.h"

#include "gegl-tile-source.h"

#include "gegl-tile-handler.h"

#include "gegl-tile-handler-chain.h"

#include "gegl-tile-storage.h"

G_DEFINE_TYPE (GeglTileHandler, gegl_tile_handler, GEGL_TYPE_TILE_SOURCE)

enum

{

  PROP0,

  PROP_SOURCE

};

gboolean gegl_tile_storage_cached_release (GeglTileStorage *storage);

static void

gegl_tile_handler_dispose (GObject *object)

{

  GeglTileHandler *handler = GEGL_TILE_HANDLER (object);

  if (handler->source != NULL)

    {

      if (!(GEGL_IS_TILE_STORAGE (handler->source) &&

	    gegl_tile_storage_cached_release ((void*)handler->source)))

        g_object_unref (handler->source);

      handler->source = NULL;

    }

  G_OBJECT_CLASS (gegl_tile_handler_parent_class)->dispose (object);

}

static gpointer

gegl_tile_handler_command (GeglTileSource *gegl_tile_source,

                           GeglTileCommand command,

                           gint            x,

                           gint            y,

                           gint            z,

                           gpointer        data)

{

  GeglTileHandler *handler = (GeglTileHandler*)gegl_tile_source;

  return gegl_tile_handler_source_command (handler, command, x, y, z, data);

}

static void

gegl_tile_handler_get_property (GObject    *gobject,

                                guint       property_id,

                                GValue     *value,

                                GParamSpec *pspec)

{

  GeglTileHandler *handler = GEGL_TILE_HANDLER (gobject);

  switch (property_id)

    {

      case PROP_SOURCE:

        g_value_set_object (value, handler->source);

        break;

      default:

        G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, property_id, pspec);

        break;

    }

}

void

gegl_tile_handler_set_source (GeglTileHandler *handler,

                              GeglTileSource  *source)

{

  if (handler->source != NULL)

    g_object_unref (handler->source);

  if (source == NULL)

    {

      handler->source = NULL;

      return;

    }

  handler->source = g_object_ref (source);

}

static void

gegl_tile_handler_set_property (GObject      *gobject,

                                guint         property_id,

                                const GValue *value,

                                GParamSpec   *pspec)

{

  GeglTileHandler *handler = GEGL_TILE_HANDLER (gobject);

  switch (property_id)

    {

      case PROP_SOURCE:

        gegl_tile_handler_set_source (handler, GEGL_TILE_SOURCE (g_value_get_object (value)));

        return;

      default:

        G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, property_id, pspec);

        break;

    }

}

static void

gegl_tile_handler_class_init (GeglTileHandlerClass *klass)

{

  GObjectClass    *gobject_class  = G_OBJECT_CLASS (klass);

  gobject_class->set_property = gegl_tile_handler_set_property;

  gobject_class->get_property = gegl_tile_handler_get_property;

  gobject_class->dispose      = gegl_tile_handler_dispose;

  g_object_class_install_property (gobject_class, PROP_SOURCE,

                                   g_param_spec_object ("source",

                                                        "GeglBuffer",

                                                        "The tilestore to be a facade for",

                                                        G_TYPE_OBJECT,

                                                        G_PARAM_READWRITE | G_PARAM_CONSTRUCT));

}

static void

gegl_tile_handler_init (GeglTileHandler *self)

{

  ((GeglTileSource*)self)->command = gegl_tile_handler_command;

  self->source = NULL;

}