Merge branch 'new-maps'

[andy/viking.git] / src / vikmapsource.c

diff --git a/src/vikmapsource.c b/src/vikmapsource.c
index 48a679f08d555101f21339e0b1913ce5fb727052..de756992f5d122124a3e14876c0c71d14e23d98c 100644 (file)
--- a/src/vikmapsource.c
+++ b/src/vikmapsource.c
@@ -30,6 +30,8 @@ static void vik_map_source_init (VikMapSource *object);
 static void vik_map_source_finalize (GObject *object);
 static void vik_map_source_class_init (VikMapSourceClass *klass);
 
+static void _supports_if_modified_since (VikMapSource *object);
+
 G_DEFINE_TYPE_EXTENDED (VikMapSource, vik_map_source, G_TYPE_OBJECT, (GTypeFlags)G_TYPE_FLAG_ABSTRACT,);
 
 static void
@@ -56,6 +58,7 @@ vik_map_source_class_init (VikMapSourceClass *klass)
        klass->get_tilesize_x = NULL;
        klass->get_tilesize_y = NULL;
        klass->get_drawmode = NULL;
+       klass->supports_if_modified_since = _supports_if_modified_since;
        klass->coord_to_mapcoord = NULL;
        klass->mapcoord_to_center_coord = NULL;
        klass->download = NULL;
@@ -63,6 +66,12 @@ vik_map_source_class_init (VikMapSourceClass *klass)
        object_class->finalize = vik_map_source_finalize;
 }
 
+void
+_supports_if_modified_since (VikMapSource *self)
+{
+       // Default feature: does not support
+       return FALSE;
+}
 
 guint8
 vik_map_source_get_uniq_id (VikMapSource *self)
@@ -129,6 +138,19 @@ vik_map_source_get_drawmode (VikMapSource *self)
        return (*klass->get_drawmode)(self);
 }
 
+gboolean
+vik_map_source_supports_if_modified_since (VikMapSource * self)
+{
+       VikMapSourceClass *klass;
+       g_return_val_if_fail (self != NULL, 0);
+       g_return_val_if_fail (VIK_IS_MAP_SOURCE (self), 0);
+       klass = VIK_MAP_SOURCE_GET_CLASS(self);
+
+       g_return_val_if_fail (klass->supports_if_modified_since != NULL, 0);
+
+       return (*klass->supports_if_modified_since)(self);
+}
+
 gboolean
 vik_map_source_coord_to_mapcoord (VikMapSource *self, const VikCoord *src, gdouble xzoom, gdouble yzoom, MapCoord *dest )
 {