src/go-data-cache-source.c

   1 /*
   2  * go-data-cache-source.c:
   3  *
   4  * Copyright (C) 2008 Jody Goldberg (jody@gnome.org)
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 2 of the
   9  * License, or (at your option) version 3.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
  19  * USA
  20  */
  21
  22 #include <goffice/goffice.h>
  23 #include <gnumeric-config.h>
  24 #include <go-data-cache-source.h>
  25
  26 GType
  27 go_data_cache_source_get_type (void)
  28 {
  29         static GType go_data_cache_source_type = 0;
  30
  31         if (!go_data_cache_source_type) {
  32                 static GTypeInfo const go_data_cache_source_info = {
  33                         sizeof (GODataCacheSourceClass),        /* class_size */
  34                         NULL,           /* base_init */
  35                         NULL,           /* base_finalize */
  36                 };
  37
  38                 go_data_cache_source_type = g_type_register_static (G_TYPE_INTERFACE,
  39                         "GODataCacheSource", &go_data_cache_source_info, 0);
  40         }
  41
  42         return go_data_cache_source_type;
  43 }
  44
  45 /**
  46  * go_data_cache_source_allocate:
  47  * @src: a #GODataCacheSource
  48  *
  49  * Creates a ref to a new #GODataCache from @src.
  50  *
  51  * Returns : a #GODataCache
  52  **/
  53 GODataCache *
  54 go_data_cache_source_allocate (GODataCacheSource const *src)
  55 {
  56         g_return_val_if_fail (IS_GO_DATA_CACHE_SOURCE (src), NULL);
  57
  58         return GO_DATA_CACHE_SOURCE_GET_CLASS (src)->allocate (src);
  59 }
  60
  61 /**
  62  * go_data_cache_source_needs_update:
  63  * @src: a #GODataCacheSource
  64  *
  65  * Has @src changed since the last call to go_data_cache_source_allocate.
  66  *
  67  * Returns: %TRUE if @src has changed.
  68  **/
  69 gboolean
  70 go_data_cache_source_needs_update (GODataCacheSource const *src)
  71 {
  72         g_return_val_if_fail (IS_GO_DATA_CACHE_SOURCE (src), FALSE);
  73         return GO_DATA_CACHE_SOURCE_GET_CLASS (src)->needs_update (src);
  74 }