src/go-data-cache-source.c

   1 /* vim: set sw=8: -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  * go-data-cache-source.c:
   4  *
   5  * Copyright (C) 2008 Jody Goldberg (jody@gnome.org)
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License as
   9  * published by the Free Software Foundation; either version 2 of the
  10  * License, or (at your option) version 3.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
  20  * USA
  21  */
  22
  23 #include <goffice/goffice.h>
  24 #include <gnumeric-config.h>
  25 #include "go-data-cache-source.h"
  26
  27 GType
  28 go_data_cache_source_get_type (void)
  29 {
  30         static GType go_data_cache_source_type = 0;
  31
  32         if (!go_data_cache_source_type) {
  33                 static GTypeInfo const go_data_cache_source_info = {
  34                         sizeof (GODataCacheSourceClass),        /* class_size */
  35                         NULL,           /* base_init */
  36                         NULL,           /* base_finalize */
  37                 };
  38
  39                 go_data_cache_source_type = g_type_register_static (G_TYPE_INTERFACE,
  40                         "GODataCacheSource", &go_data_cache_source_info, 0);
  41         }
  42
  43         return go_data_cache_source_type;
  44 }
  45
  46 /**
  47  * go_data_cache_source_allocate:
  48  * @src: a #GODataCacheSource
  49  *
  50  * Creates a ref to a new #GODataCache from @src.
  51  *
  52  * Returns : a #GODataCache
  53  **/
  54 GODataCache *
  55 go_data_cache_source_allocate (GODataCacheSource const *src)
  56 {
  57         g_return_val_if_fail (IS_GO_DATA_CACHE_SOURCE (src), NULL);
  58
  59         return GO_DATA_CACHE_SOURCE_GET_CLASS (src)->allocate (src);
  60 }
  61
  62 /**
  63  * go_data_cache_source_needs_update:
  64  * @src: a #GODataCacheSource
  65  *
  66  * Has @src changed since the last call to go_data_cache_source_allocate.
  67  *
  68  * Returns: %TRUE if @src has changed.
  69  **/
  70 gboolean
  71 go_data_cache_source_needs_update (GODataCacheSource const *src)
  72 {
  73         g_return_val_if_fail (IS_GO_DATA_CACHE_SOURCE (src), FALSE);
  74         return GO_DATA_CACHE_SOURCE_GET_CLASS (src)->needs_update (src);
  75 }