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sortkeys: Add an equal sort keys

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Compares every element as equal.
This is useful when sorters are in an invalid configuration.
This commit is contained in:
Benjamin Otte 2020-07-16 12:05:45 +02:00
parent 3b24c8a0a4
commit 814c88fbc1
2 changed files with 55 additions and 0 deletions
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53
gtk/gtksortkeys.c
View File

@ -95,3 +95,56 @@ gtk_sort_keys_needs_clear_key (GtkSortKeys *self)
return self->klass->clear_key != NULL;
}
static void
gtk_equal_sort_keys_free (GtkSortKeys *keys)
{
g_slice_free (GtkSortKeys, keys);
}
static int
gtk_equal_sort_keys_compare (gconstpointer a,
gconstpointer b,
gpointer unused)
{
return GTK_ORDERING_EQUAL;
}
static gboolean
gtk_equal_sort_keys_is_compatible (GtkSortKeys *keys,
GtkSortKeys *other)
{
return keys->klass == other->klass;
}
static void
gtk_equal_sort_keys_init_key (GtkSortKeys *keys,
gpointer item,
gpointer key_memory)
{
}
static const GtkSortKeysClass GTK_EQUAL_SORT_KEYS_CLASS =
{
gtk_equal_sort_keys_free,
gtk_equal_sort_keys_compare,
gtk_equal_sort_keys_is_compatible,
gtk_equal_sort_keys_init_key,
NULL
};
/*<private>
* gtk_sort_keys_new_equal:
*
* Creates a new #GtkSortKeys that compares every element as equal.
* This is useful when sorters are in an invalid configuration.
*
* Returns: a new #GtkSortKeys
**/
GtkSortKeys *
gtk_sort_keys_new_equal (void)
{
return gtk_sort_keys_new (GtkSortKeys,
&GTK_EQUAL_SORT_KEYS_CLASS,
0, 1);
}

2
gtk/gtksortkeysprivate.h
View File

@ -59,6 +59,8 @@ GtkSortKeys * gtk_sort_keys_alloc (const GtkSortKe
GtkSortKeys * gtk_sort_keys_ref (GtkSortKeys *self);
void gtk_sort_keys_unref (GtkSortKeys *self);
GtkSortKeys * gtk_sort_keys_new_equal (void);
gsize gtk_sort_keys_get_key_size (GtkSortKeys *self);
gsize gtk_sort_keys_get_key_align (GtkSortKeys *self);
GCompareDataFunc gtk_sort_keys_get_key_compare_func (GtkSortKeys *self);