lib/propregistry.c

   1 /* Dia -- a diagram creation/manipulation program -*- c -*-
   2  * Copyright (C) 1998 Alexander Larsson
   3  *
   4  * Property system for dia objects/shapes.
   5  * Copyright (C) 2000 James Henstridge
   6  * Copyright (C) 2001 Cyrille Chepelov
   7  * Major restructuration done in August 2001 by C. Chepelov
   8  *
   9  * A Registry of property types.
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  24  */
  25 #ifdef HAVE_CONFIG_H
  26 #include <config.h>
  27 #endif
  28
  29 #include <gtk/gtk.h>
  30 #include "properties.h"
  31 #include "propinternals.h"
  32
  33 static GHashTable *props_hash = NULL;
  34
  35 static void check_props_hash(void)
  36 {
  37   if (!props_hash) {
  38     props_hash = g_hash_table_new(g_str_hash,g_str_equal);
  39   }
  40 }
  41
  42 void
  43 prop_type_register(PropertyType type, const PropertyOps *ops)
  44 {
  45   check_props_hash();
  46   g_hash_table_insert(props_hash,(gpointer)type,(gpointer)ops);
  47 }
  48
  49 const PropertyOps *
  50 prop_type_get_ops(PropertyType type)
  51 {
  52   check_props_hash();
  53   return g_hash_table_lookup(props_hash,type);
  54 }