1 /* GObject - GLib Type, Object, Parameter and Signal Library
2 * Copyright (C) 1997-1999, 2000-2001 Tim Janik and Red Hat, Inc.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General
15 * Public License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
17 * Boston, MA 02111-1307, USA.
25 #include "gparamspecs.h"
27 #include "gvaluecollector.h"
28 #include "gobjectalias.h"
34 #define G_PARAM_USER_MASK (~0 << G_PARAM_USER_SHIFT)
35 #define PSPEC_APPLIES_TO_VALUE(pspec, value) (G_TYPE_CHECK_VALUE_TYPE ((value), G_PARAM_SPEC_VALUE_TYPE (pspec)))
36 #define G_SLOCK(mutex) g_static_mutex_lock (mutex)
37 #define G_SUNLOCK(mutex) g_static_mutex_unlock (mutex)
40 /* --- prototypes --- */
41 static void g_param_spec_class_base_init (GParamSpecClass *class);
42 static void g_param_spec_class_base_finalize (GParamSpecClass *class);
43 static void g_param_spec_class_init (GParamSpecClass *class,
45 static void g_param_spec_init (GParamSpec *pspec,
46 GParamSpecClass *class);
47 static void g_param_spec_finalize (GParamSpec *pspec);
48 static void value_param_init (GValue *value);
49 static void value_param_free_value (GValue *value);
50 static void value_param_copy_value (const GValue *src_value,
52 static void value_param_transform_value (const GValue *src_value,
54 static gpointer value_param_peek_pointer (const GValue *value);
55 static gchar* value_param_collect_value (GValue *value,
56 guint n_collect_values,
57 GTypeCValue *collect_values,
59 static gchar* value_param_lcopy_value (const GValue *value,
60 guint n_collect_values,
61 GTypeCValue *collect_values,
65 /* --- variables --- */
66 static GQuark quark_floating = 0;
69 /* --- functions --- */
71 g_param_type_init (void)
73 static const GTypeFundamentalInfo finfo = {
74 (G_TYPE_FLAG_CLASSED |
75 G_TYPE_FLAG_INSTANTIATABLE |
76 G_TYPE_FLAG_DERIVABLE |
77 G_TYPE_FLAG_DEEP_DERIVABLE),
79 static const GTypeValueTable param_value_table = {
80 value_param_init, /* value_init */
81 value_param_free_value, /* value_free */
82 value_param_copy_value, /* value_copy */
83 value_param_peek_pointer, /* value_peek_pointer */
84 "p", /* collect_format */
85 value_param_collect_value, /* collect_value */
86 "p", /* lcopy_format */
87 value_param_lcopy_value, /* lcopy_value */
89 static const GTypeInfo param_spec_info = {
90 sizeof (GParamSpecClass),
92 (GBaseInitFunc) g_param_spec_class_base_init,
93 (GBaseFinalizeFunc) g_param_spec_class_base_finalize,
94 (GClassInitFunc) g_param_spec_class_init,
95 (GClassFinalizeFunc) NULL,
96 NULL, /* class_data */
100 (GInstanceInitFunc) g_param_spec_init,
106 type = g_type_register_fundamental (G_TYPE_PARAM, g_intern_static_string ("GParam"), ¶m_spec_info, &finfo, G_TYPE_FLAG_ABSTRACT);
107 g_assert (type == G_TYPE_PARAM);
108 g_value_register_transform_func (G_TYPE_PARAM, G_TYPE_PARAM, value_param_transform_value);
112 g_param_spec_class_base_init (GParamSpecClass *class)
117 g_param_spec_class_base_finalize (GParamSpecClass *class)
122 g_param_spec_class_init (GParamSpecClass *class,
125 quark_floating = g_quark_from_static_string ("GParamSpec-floating");
127 class->value_type = G_TYPE_NONE;
128 class->finalize = g_param_spec_finalize;
129 class->value_set_default = NULL;
130 class->value_validate = NULL;
131 class->values_cmp = NULL;
135 g_param_spec_init (GParamSpec *pspec,
136 GParamSpecClass *class)
140 pspec->_blurb = NULL;
142 pspec->value_type = class->value_type;
143 pspec->owner_type = 0;
145 pspec->ref_count = 1;
147 g_datalist_id_set_data (&pspec->qdata, quark_floating, GUINT_TO_POINTER (TRUE));
151 g_param_spec_finalize (GParamSpec *pspec)
153 g_datalist_clear (&pspec->qdata);
155 if (!(pspec->flags & G_PARAM_STATIC_NAME))
156 g_free (pspec->name);
158 if (!(pspec->flags & G_PARAM_STATIC_NICK))
159 g_free (pspec->_nick);
161 if (!(pspec->flags & G_PARAM_STATIC_BLURB))
162 g_free (pspec->_blurb);
164 g_type_free_instance ((GTypeInstance*) pspec);
168 g_param_spec_ref (GParamSpec *pspec)
170 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
171 g_return_val_if_fail (pspec->ref_count > 0, NULL);
173 g_atomic_int_inc (&pspec->ref_count);
179 g_param_spec_unref (GParamSpec *pspec)
183 g_return_if_fail (G_IS_PARAM_SPEC (pspec));
184 g_return_if_fail (pspec->ref_count > 0);
186 is_zero = g_atomic_int_dec_and_test (&pspec->ref_count);
188 if (G_UNLIKELY (is_zero))
190 G_PARAM_SPEC_GET_CLASS (pspec)->finalize (pspec);
195 g_param_spec_sink (GParamSpec *pspec)
197 g_return_if_fail (G_IS_PARAM_SPEC (pspec));
198 g_return_if_fail (pspec->ref_count > 0);
200 if (g_datalist_id_remove_no_notify (&pspec->qdata, quark_floating))
201 g_param_spec_unref (pspec);
205 g_param_spec_ref_sink (GParamSpec *pspec)
207 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
208 g_return_val_if_fail (pspec->ref_count > 0, NULL);
210 g_param_spec_ref (pspec);
211 g_param_spec_sink (pspec);
215 G_CONST_RETURN gchar*
216 g_param_spec_get_name (GParamSpec *pspec)
218 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
223 G_CONST_RETURN gchar*
224 g_param_spec_get_nick (GParamSpec *pspec)
226 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
232 GParamSpec *redirect_target;
234 redirect_target = g_param_spec_get_redirect_target (pspec);
235 if (redirect_target && redirect_target->_nick)
236 return redirect_target->_nick;
242 G_CONST_RETURN gchar*
243 g_param_spec_get_blurb (GParamSpec *pspec)
245 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
248 return pspec->_blurb;
251 GParamSpec *redirect_target;
253 redirect_target = g_param_spec_get_redirect_target (pspec);
254 if (redirect_target && redirect_target->_blurb)
255 return redirect_target->_blurb;
262 canonicalize_key (gchar *key)
266 for (p = key; *p != 0; p++)
271 (c < '0' || c > '9') &&
272 (c < 'A' || c > 'Z') &&
273 (c < 'a' || c > 'z'))
279 is_canonical (const gchar *key)
283 for (p = key; *p != 0; p++)
288 (c < '0' || c > '9') &&
289 (c < 'A' || c > 'Z') &&
290 (c < 'a' || c > 'z'))
298 g_param_spec_internal (GType param_type,
306 g_return_val_if_fail (G_TYPE_IS_PARAM (param_type) && param_type != G_TYPE_PARAM, NULL);
307 g_return_val_if_fail (name != NULL, NULL);
308 g_return_val_if_fail ((name[0] >= 'A' && name[0] <= 'Z') || (name[0] >= 'a' && name[0] <= 'z'), NULL);
309 g_return_val_if_fail (!(flags & G_PARAM_STATIC_NAME) || is_canonical (name), NULL);
311 pspec = (gpointer) g_type_create_instance (param_type);
313 if (flags & G_PARAM_STATIC_NAME)
315 pspec->name = g_intern_static_string (name);
316 if (!is_canonical (pspec->name))
317 g_warning ("G_PARAM_STATIC_NAME used with non-canonical pspec name: %s", pspec->name);
321 pspec->name = g_strdup (name);
322 canonicalize_key (pspec->name);
323 g_intern_string (pspec->name);
326 if (flags & G_PARAM_STATIC_NICK)
327 pspec->_nick = (gchar*) nick;
329 pspec->_nick = g_strdup (nick);
331 if (flags & G_PARAM_STATIC_BLURB)
332 pspec->_blurb = (gchar*) blurb;
334 pspec->_blurb = g_strdup (blurb);
336 pspec->flags = (flags & G_PARAM_USER_MASK) | (flags & G_PARAM_MASK);
342 g_param_spec_get_qdata (GParamSpec *pspec,
345 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
347 return quark ? g_datalist_id_get_data (&pspec->qdata, quark) : NULL;
351 g_param_spec_set_qdata (GParamSpec *pspec,
355 g_return_if_fail (G_IS_PARAM_SPEC (pspec));
356 g_return_if_fail (quark > 0);
358 g_datalist_id_set_data (&pspec->qdata, quark, data);
362 g_param_spec_set_qdata_full (GParamSpec *pspec,
365 GDestroyNotify destroy)
367 g_return_if_fail (G_IS_PARAM_SPEC (pspec));
368 g_return_if_fail (quark > 0);
370 g_datalist_id_set_data_full (&pspec->qdata, quark, data, data ? destroy : (GDestroyNotify) NULL);
374 g_param_spec_steal_qdata (GParamSpec *pspec,
377 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
378 g_return_val_if_fail (quark > 0, NULL);
380 return g_datalist_id_remove_no_notify (&pspec->qdata, quark);
384 g_param_spec_get_redirect_target (GParamSpec *pspec)
386 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
388 if (G_IS_PARAM_SPEC_OVERRIDE (pspec))
390 GParamSpecOverride *ospec = G_PARAM_SPEC_OVERRIDE (pspec);
392 return ospec->overridden;
399 g_param_value_set_default (GParamSpec *pspec,
402 g_return_if_fail (G_IS_PARAM_SPEC (pspec));
403 g_return_if_fail (G_IS_VALUE (value));
404 g_return_if_fail (PSPEC_APPLIES_TO_VALUE (pspec, value));
406 g_value_reset (value);
407 G_PARAM_SPEC_GET_CLASS (pspec)->value_set_default (pspec, value);
411 g_param_value_defaults (GParamSpec *pspec,
414 GValue dflt_value = { 0, };
417 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), FALSE);
418 g_return_val_if_fail (G_IS_VALUE (value), FALSE);
419 g_return_val_if_fail (PSPEC_APPLIES_TO_VALUE (pspec, value), FALSE);
421 g_value_init (&dflt_value, G_PARAM_SPEC_VALUE_TYPE (pspec));
422 G_PARAM_SPEC_GET_CLASS (pspec)->value_set_default (pspec, &dflt_value);
423 defaults = G_PARAM_SPEC_GET_CLASS (pspec)->values_cmp (pspec, value, &dflt_value) == 0;
424 g_value_unset (&dflt_value);
430 g_param_value_validate (GParamSpec *pspec,
433 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), FALSE);
434 g_return_val_if_fail (G_IS_VALUE (value), FALSE);
435 g_return_val_if_fail (PSPEC_APPLIES_TO_VALUE (pspec, value), FALSE);
437 if (G_PARAM_SPEC_GET_CLASS (pspec)->value_validate)
439 GValue oval = *value;
441 if (G_PARAM_SPEC_GET_CLASS (pspec)->value_validate (pspec, value) ||
442 memcmp (&oval.data, &value->data, sizeof (oval.data)))
450 g_param_value_convert (GParamSpec *pspec,
451 const GValue *src_value,
453 gboolean strict_validation)
455 GValue tmp_value = { 0, };
457 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), FALSE);
458 g_return_val_if_fail (G_IS_VALUE (src_value), FALSE);
459 g_return_val_if_fail (G_IS_VALUE (dest_value), FALSE);
460 g_return_val_if_fail (PSPEC_APPLIES_TO_VALUE (pspec, dest_value), FALSE);
462 /* better leave dest_value untouched when returning FALSE */
464 g_value_init (&tmp_value, G_VALUE_TYPE (dest_value));
465 if (g_value_transform (src_value, &tmp_value) &&
466 (!g_param_value_validate (pspec, &tmp_value) || !strict_validation))
468 g_value_unset (dest_value);
470 /* values are relocatable */
471 memcpy (dest_value, &tmp_value, sizeof (tmp_value));
477 g_value_unset (&tmp_value);
484 g_param_values_cmp (GParamSpec *pspec,
485 const GValue *value1,
486 const GValue *value2)
490 /* param_values_cmp() effectively does: value1 - value2
491 * so the return values are:
492 * -1) value1 < value2
493 * 0) value1 == value2
496 g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), 0);
497 g_return_val_if_fail (G_IS_VALUE (value1), 0);
498 g_return_val_if_fail (G_IS_VALUE (value2), 0);
499 g_return_val_if_fail (PSPEC_APPLIES_TO_VALUE (pspec, value1), 0);
500 g_return_val_if_fail (PSPEC_APPLIES_TO_VALUE (pspec, value2), 0);
502 cmp = G_PARAM_SPEC_GET_CLASS (pspec)->values_cmp (pspec, value1, value2);
504 return CLAMP (cmp, -1, 1);
508 value_param_init (GValue *value)
510 value->data[0].v_pointer = NULL;
514 value_param_free_value (GValue *value)
516 if (value->data[0].v_pointer)
517 g_param_spec_unref (value->data[0].v_pointer);
521 value_param_copy_value (const GValue *src_value,
524 if (src_value->data[0].v_pointer)
525 dest_value->data[0].v_pointer = g_param_spec_ref (src_value->data[0].v_pointer);
527 dest_value->data[0].v_pointer = NULL;
531 value_param_transform_value (const GValue *src_value,
534 if (src_value->data[0].v_pointer &&
535 g_type_is_a (G_PARAM_SPEC_TYPE (dest_value->data[0].v_pointer), G_VALUE_TYPE (dest_value)))
536 dest_value->data[0].v_pointer = g_param_spec_ref (src_value->data[0].v_pointer);
538 dest_value->data[0].v_pointer = NULL;
542 value_param_peek_pointer (const GValue *value)
544 return value->data[0].v_pointer;
548 value_param_collect_value (GValue *value,
549 guint n_collect_values,
550 GTypeCValue *collect_values,
553 if (collect_values[0].v_pointer)
555 GParamSpec *param = collect_values[0].v_pointer;
557 if (param->g_type_instance.g_class == NULL)
558 return g_strconcat ("invalid unclassed param spec pointer for value type `",
559 G_VALUE_TYPE_NAME (value),
562 else if (!g_value_type_compatible (G_PARAM_SPEC_TYPE (param), G_VALUE_TYPE (value)))
563 return g_strconcat ("invalid param spec type `",
564 G_PARAM_SPEC_TYPE_NAME (param),
565 "' for value type `",
566 G_VALUE_TYPE_NAME (value),
569 value->data[0].v_pointer = g_param_spec_ref (param);
572 value->data[0].v_pointer = NULL;
578 value_param_lcopy_value (const GValue *value,
579 guint n_collect_values,
580 GTypeCValue *collect_values,
583 GParamSpec **param_p = collect_values[0].v_pointer;
586 return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
588 if (!value->data[0].v_pointer)
590 else if (collect_flags & G_VALUE_NOCOPY_CONTENTS)
591 *param_p = value->data[0].v_pointer;
593 *param_p = g_param_spec_ref (value->data[0].v_pointer);
599 /* --- param spec pool --- */
600 struct _GParamSpecPool
603 gboolean type_prefixing;
604 GHashTable *hash_table;
608 param_spec_pool_hash (gconstpointer key_spec)
610 const GParamSpec *key = key_spec;
612 guint h = key->owner_type;
614 for (p = key->name; *p; p++)
615 h = (h << 5) - h + *p;
621 param_spec_pool_equals (gconstpointer key_spec_1,
622 gconstpointer key_spec_2)
624 const GParamSpec *key1 = key_spec_1;
625 const GParamSpec *key2 = key_spec_2;
627 return (key1->owner_type == key2->owner_type &&
628 strcmp (key1->name, key2->name) == 0);
632 g_param_spec_pool_new (gboolean type_prefixing)
634 static GStaticMutex init_smutex = G_STATIC_MUTEX_INIT;
635 GParamSpecPool *pool = g_new (GParamSpecPool, 1);
637 memcpy (&pool->smutex, &init_smutex, sizeof (init_smutex));
638 pool->type_prefixing = type_prefixing != FALSE;
639 pool->hash_table = g_hash_table_new (param_spec_pool_hash, param_spec_pool_equals);
645 g_param_spec_pool_insert (GParamSpecPool *pool,
651 if (pool && pspec && owner_type > 0 && pspec->owner_type == 0)
653 G_SLOCK (&pool->smutex);
654 for (p = pspec->name; *p; p++)
656 if (!strchr (G_CSET_A_2_Z G_CSET_a_2_z G_CSET_DIGITS "-_", *p))
658 g_warning (G_STRLOC ": pspec name \"%s\" contains invalid characters", pspec->name);
659 G_SUNLOCK (&pool->smutex);
664 pspec->owner_type = owner_type;
665 g_param_spec_ref (pspec);
666 g_hash_table_insert (pool->hash_table, pspec, pspec);
667 G_SUNLOCK (&pool->smutex);
671 g_return_if_fail (pool != NULL);
672 g_return_if_fail (pspec);
673 g_return_if_fail (owner_type > 0);
674 g_return_if_fail (pspec->owner_type == 0);
679 g_param_spec_pool_remove (GParamSpecPool *pool,
684 G_SLOCK (&pool->smutex);
685 if (g_hash_table_remove (pool->hash_table, pspec))
686 g_param_spec_unref (pspec);
688 g_warning (G_STRLOC ": attempt to remove unknown pspec `%s' from pool", pspec->name);
689 G_SUNLOCK (&pool->smutex);
693 g_return_if_fail (pool != NULL);
694 g_return_if_fail (pspec);
698 static inline GParamSpec*
699 param_spec_ht_lookup (GHashTable *hash_table,
700 const gchar *param_name,
702 gboolean walk_ancestors)
704 GParamSpec key, *pspec;
706 key.owner_type = owner_type;
707 key.name = (gchar*) param_name;
711 pspec = g_hash_table_lookup (hash_table, &key);
714 key.owner_type = g_type_parent (key.owner_type);
716 while (key.owner_type);
718 pspec = g_hash_table_lookup (hash_table, &key);
720 if (!pspec && !is_canonical (param_name))
722 /* try canonicalized form */
723 key.name = g_strdup (param_name);
724 key.owner_type = owner_type;
726 canonicalize_key (key.name);
730 pspec = g_hash_table_lookup (hash_table, &key);
736 key.owner_type = g_type_parent (key.owner_type);
738 while (key.owner_type);
740 pspec = g_hash_table_lookup (hash_table, &key);
748 g_param_spec_pool_lookup (GParamSpecPool *pool,
749 const gchar *param_name,
751 gboolean walk_ancestors)
756 if (!pool || !param_name)
758 g_return_val_if_fail (pool != NULL, NULL);
759 g_return_val_if_fail (param_name != NULL, NULL);
762 G_SLOCK (&pool->smutex);
764 delim = pool->type_prefixing ? strchr (param_name, ':') : NULL;
766 /* try quick and away, i.e. without prefix */
769 pspec = param_spec_ht_lookup (pool->hash_table, param_name, owner_type, walk_ancestors);
770 G_SUNLOCK (&pool->smutex);
775 /* strip type prefix */
776 if (pool->type_prefixing && delim[1] == ':')
778 guint l = delim - param_name;
779 gchar stack_buffer[32], *buffer = l < 32 ? stack_buffer : g_new (gchar, l + 1);
782 strncpy (buffer, param_name, delim - param_name);
784 type = g_type_from_name (buffer);
787 if (type) /* type==0 isn't a valid type pefix */
789 /* sanity check, these cases don't make a whole lot of sense */
790 if ((!walk_ancestors && type != owner_type) || !g_type_is_a (owner_type, type))
792 G_SUNLOCK (&pool->smutex);
798 pspec = param_spec_ht_lookup (pool->hash_table, param_name, owner_type, walk_ancestors);
799 G_SUNLOCK (&pool->smutex);
804 /* malformed param_name */
806 G_SUNLOCK (&pool->smutex);
812 pool_list (gpointer key,
816 GParamSpec *pspec = value;
817 gpointer *data = user_data;
818 GType owner_type = (GType) data[1];
820 if (owner_type == pspec->owner_type)
821 data[0] = g_list_prepend (data[0], pspec);
825 g_param_spec_pool_list_owned (GParamSpecPool *pool,
830 g_return_val_if_fail (pool != NULL, NULL);
831 g_return_val_if_fail (owner_type > 0, NULL);
833 G_SLOCK (&pool->smutex);
835 data[1] = (gpointer) owner_type;
836 g_hash_table_foreach (pool->hash_table, pool_list, &data);
837 G_SUNLOCK (&pool->smutex);
843 pspec_compare_id (gconstpointer a,
846 const GParamSpec *pspec1 = a, *pspec2 = b;
848 return pspec1->param_id < pspec2->param_id ? -1 : pspec1->param_id > pspec2->param_id;
851 static inline GSList*
852 pspec_list_remove_overridden_and_redirected (GSList *plist,
857 GSList *rlist = NULL;
861 GSList *tmp = plist->next;
862 GParamSpec *pspec = plist->data;
864 gboolean remove = FALSE;
866 /* Remove paramspecs that are redirected, and also paramspecs
867 * that have are overridden by non-redirected properties.
868 * The idea is to get the single paramspec for each name that
869 * best corresponds to what the application sees.
871 if (g_param_spec_get_redirect_target (pspec))
875 found = param_spec_ht_lookup (ht, pspec->name, owner_type, TRUE);
878 GParamSpec *redirect = g_param_spec_get_redirect_target (found);
879 if (redirect != pspec)
886 g_slist_free_1 (plist);
900 pool_depth_list (gpointer key,
904 GParamSpec *pspec = value;
905 gpointer *data = user_data;
906 GSList **slists = data[0];
907 GType owner_type = (GType) data[1];
909 if (g_type_is_a (owner_type, pspec->owner_type))
911 if (G_TYPE_IS_INTERFACE (pspec->owner_type))
913 slists[0] = g_slist_prepend (slists[0], pspec);
917 guint d = g_type_depth (pspec->owner_type);
919 slists[d - 1] = g_slist_prepend (slists[d - 1], pspec);
924 /* We handle interfaces specially since we don't want to
925 * count interface prerequsites like normal inheritance;
926 * the property comes from the direct inheritance from
927 * the prerequisite class, not from the interface that
930 * also 'depth' isn't a meaningful concept for interface
934 pool_depth_list_for_interface (gpointer key,
938 GParamSpec *pspec = value;
939 gpointer *data = user_data;
940 GSList **slists = data[0];
941 GType owner_type = (GType) data[1];
943 if (pspec->owner_type == owner_type)
944 slists[0] = g_slist_prepend (slists[0], pspec);
947 GParamSpec** /* free result */
948 g_param_spec_pool_list (GParamSpecPool *pool,
952 GParamSpec **pspecs, **p;
953 GSList **slists, *node;
957 g_return_val_if_fail (pool != NULL, NULL);
958 g_return_val_if_fail (owner_type > 0, NULL);
959 g_return_val_if_fail (n_pspecs_p != NULL, NULL);
961 G_SLOCK (&pool->smutex);
963 d = g_type_depth (owner_type);
964 slists = g_new0 (GSList*, d);
966 data[1] = (gpointer) owner_type;
968 g_hash_table_foreach (pool->hash_table,
969 G_TYPE_IS_INTERFACE (owner_type) ?
970 pool_depth_list_for_interface :
974 for (i = 0; i < d; i++)
975 slists[i] = pspec_list_remove_overridden_and_redirected (slists[i], pool->hash_table, owner_type, n_pspecs_p);
976 pspecs = g_new (GParamSpec*, *n_pspecs_p + 1);
978 for (i = 0; i < d; i++)
980 slists[i] = g_slist_sort (slists[i], pspec_compare_id);
981 for (node = slists[i]; node; node = node->next)
983 g_slist_free (slists[i]);
987 G_SUNLOCK (&pool->smutex);
993 /* --- auxillary functions --- */
998 void (*finalize) (GParamSpec *pspec);
999 void (*value_set_default) (GParamSpec *pspec,
1001 gboolean (*value_validate) (GParamSpec *pspec,
1003 gint (*values_cmp) (GParamSpec *pspec,
1004 const GValue *value1,
1005 const GValue *value2);
1006 } ParamSpecClassInfo;
1009 param_spec_generic_class_init (gpointer g_class,
1010 gpointer class_data)
1012 GParamSpecClass *class = g_class;
1013 ParamSpecClassInfo *info = class_data;
1015 class->value_type = info->value_type;
1017 class->finalize = info->finalize; /* optional */
1018 class->value_set_default = info->value_set_default;
1019 if (info->value_validate)
1020 class->value_validate = info->value_validate; /* optional */
1021 class->values_cmp = info->values_cmp;
1022 g_free (class_data);
1026 default_value_set_default (GParamSpec *pspec,
1029 /* value is already zero initialized */
1033 default_values_cmp (GParamSpec *pspec,
1034 const GValue *value1,
1035 const GValue *value2)
1037 return memcmp (&value1->data, &value2->data, sizeof (value1->data));
1041 g_param_type_register_static (const gchar *name,
1042 const GParamSpecTypeInfo *pspec_info)
1045 sizeof (GParamSpecClass), /* class_size */
1046 NULL, /* base_init */
1047 NULL, /* base_destroy */
1048 param_spec_generic_class_init, /* class_init */
1049 NULL, /* class_destroy */
1050 NULL, /* class_data */
1051 0, /* instance_size */
1052 16, /* n_preallocs */
1053 NULL, /* instance_init */
1055 ParamSpecClassInfo *cinfo;
1057 g_return_val_if_fail (name != NULL, 0);
1058 g_return_val_if_fail (pspec_info != NULL, 0);
1059 g_return_val_if_fail (g_type_from_name (name) == 0, 0);
1060 g_return_val_if_fail (pspec_info->instance_size >= sizeof (GParamSpec), 0);
1061 g_return_val_if_fail (g_type_name (pspec_info->value_type) != NULL, 0);
1062 /* default: g_return_val_if_fail (pspec_info->value_set_default != NULL, 0); */
1063 /* optional: g_return_val_if_fail (pspec_info->value_validate != NULL, 0); */
1064 /* default: g_return_val_if_fail (pspec_info->values_cmp != NULL, 0); */
1066 info.instance_size = pspec_info->instance_size;
1067 info.n_preallocs = pspec_info->n_preallocs;
1068 info.instance_init = (GInstanceInitFunc) pspec_info->instance_init;
1069 cinfo = g_new (ParamSpecClassInfo, 1);
1070 cinfo->value_type = pspec_info->value_type;
1071 cinfo->finalize = pspec_info->finalize;
1072 cinfo->value_set_default = pspec_info->value_set_default ? pspec_info->value_set_default : default_value_set_default;
1073 cinfo->value_validate = pspec_info->value_validate;
1074 cinfo->values_cmp = pspec_info->values_cmp ? pspec_info->values_cmp : default_values_cmp;
1075 info.class_data = cinfo;
1077 return g_type_register_static (G_TYPE_PARAM, name, &info, 0);
1081 g_value_set_param (GValue *value,
1084 g_return_if_fail (G_VALUE_HOLDS_PARAM (value));
1086 g_return_if_fail (G_IS_PARAM_SPEC (param));
1088 if (value->data[0].v_pointer)
1089 g_param_spec_unref (value->data[0].v_pointer);
1090 value->data[0].v_pointer = param;
1091 if (value->data[0].v_pointer)
1092 g_param_spec_ref (value->data[0].v_pointer);
1096 g_value_set_param_take_ownership (GValue *value,
1099 g_value_take_param (value, param);
1103 g_value_take_param (GValue *value,
1106 g_return_if_fail (G_VALUE_HOLDS_PARAM (value));
1108 g_return_if_fail (G_IS_PARAM_SPEC (param));
1110 if (value->data[0].v_pointer)
1111 g_param_spec_unref (value->data[0].v_pointer);
1112 value->data[0].v_pointer = param; /* we take over the reference count */
1116 g_value_get_param (const GValue *value)
1118 g_return_val_if_fail (G_VALUE_HOLDS_PARAM (value), NULL);
1120 return value->data[0].v_pointer;
1124 g_value_dup_param (const GValue *value)
1126 g_return_val_if_fail (G_VALUE_HOLDS_PARAM (value), NULL);
1128 return value->data[0].v_pointer ? g_param_spec_ref (value->data[0].v_pointer) : NULL;
1131 #define __G_PARAM_C__
1132 #include "gobjectaliasdef.c"