* MT safe
*/
-#include "gparam.h"
+#include "config.h"
+#include <string.h>
-#include "gvaluecollector.h"
-#include <string.h>
+#include "gparam.h"
+#include "gparamspecs.h"
+#include "gvaluecollector.h"
+#include "gobjectalias.h"
+/**
+ * SECTION:gparamspec
+ * @Short_description: Metadata for parameter specifications
+ * @See_also:g_object_class_install_property(), g_object_set(), g_object_get(),
+ * g_object_set_property(), g_object_get_property(), g_value_register_transform_func()
+ * @Title: GParamSpec
+ *
+ * #GParamSpec is an object structure that encapsulates the metadata
+ * required to specify parameters, such as e.g. #GObject properties.
+ *
+ * <para id="canonical-parameter-name">
+ * Parameter names need to start with a letter (a-z or A-Z). Subsequent
+ * characters can be letters, numbers or a '-'.
+ * All other characters are replaced by a '-' during construction.
+ * The result of this replacement is called the canonical name of the
+ * parameter.
+ * </para>
+ */
+
/* --- defines --- */
+#define PARAM_FLOATING_FLAG 0x2
#define G_PARAM_USER_MASK (~0 << G_PARAM_USER_SHIFT)
#define PSPEC_APPLIES_TO_VALUE(pspec, value) (G_TYPE_CHECK_VALUE_TYPE ((value), G_PARAM_SPEC_VALUE_TYPE (pspec)))
#define G_SLOCK(mutex) g_static_mutex_lock (mutex)
guint collect_flags);
-/* --- variables --- */
-static GQuark quark_floating = 0;
-G_LOCK_DEFINE_STATIC (pspec_ref_count);
-
-
/* --- functions --- */
void
-g_param_type_init (void) /* sync with gtype.c */
+g_param_type_init (void)
{
static const GTypeFundamentalInfo finfo = {
(G_TYPE_FLAG_CLASSED |
};
GType type;
- type = g_type_register_fundamental (G_TYPE_PARAM, "GParam", ¶m_spec_info, &finfo, G_TYPE_FLAG_ABSTRACT);
+ type = g_type_register_fundamental (G_TYPE_PARAM, g_intern_static_string ("GParam"), ¶m_spec_info, &finfo, G_TYPE_FLAG_ABSTRACT);
g_assert (type == G_TYPE_PARAM);
g_value_register_transform_func (G_TYPE_PARAM, G_TYPE_PARAM, value_param_transform_value);
}
g_param_spec_class_init (GParamSpecClass *class,
gpointer class_data)
{
- quark_floating = g_quark_from_static_string ("GParamSpec-floating");
-
class->value_type = G_TYPE_NONE;
class->finalize = g_param_spec_finalize;
class->value_set_default = NULL;
pspec->value_type = class->value_type;
pspec->owner_type = 0;
pspec->qdata = NULL;
+ g_datalist_init (&pspec->qdata);
+ g_datalist_set_flags (&pspec->qdata, PARAM_FLOATING_FLAG);
pspec->ref_count = 1;
pspec->param_id = 0;
- g_datalist_id_set_data (&pspec->qdata, quark_floating, GUINT_TO_POINTER (TRUE));
}
static void
g_param_spec_finalize (GParamSpec *pspec)
{
g_datalist_clear (&pspec->qdata);
+
+ if (!(pspec->flags & G_PARAM_STATIC_NAME))
+ g_free (pspec->name);
- g_free (pspec->name);
- g_free (pspec->_nick);
- g_free (pspec->_blurb);
+ if (!(pspec->flags & G_PARAM_STATIC_NICK))
+ g_free (pspec->_nick);
+
+ if (!(pspec->flags & G_PARAM_STATIC_BLURB))
+ g_free (pspec->_blurb);
g_type_free_instance ((GTypeInstance*) pspec);
}
+/**
+ * g_param_spec_ref:
+ * @pspec: a valid #GParamSpec
+ *
+ * Increments the reference count of @pspec.
+ *
+ * Returns: the #GParamSpec that was passed into this function
+ */
GParamSpec*
g_param_spec_ref (GParamSpec *pspec)
{
g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
+ g_return_val_if_fail (pspec->ref_count > 0, NULL);
+
+ g_atomic_int_inc (&pspec->ref_count);
- G_LOCK (pspec_ref_count);
- if (pspec->ref_count > 0)
- {
- pspec->ref_count += 1;
- G_UNLOCK (pspec_ref_count);
- }
- else
- {
- G_UNLOCK (pspec_ref_count);
- g_return_val_if_fail (pspec->ref_count > 0, NULL);
- }
-
return pspec;
}
+/**
+ * g_param_spec_unref:
+ * @pspec: a valid #GParamSpec
+ *
+ * Decrements the reference count of a @pspec.
+ */
void
g_param_spec_unref (GParamSpec *pspec)
{
+ gboolean is_zero;
+
g_return_if_fail (G_IS_PARAM_SPEC (pspec));
+ g_return_if_fail (pspec->ref_count > 0);
- G_LOCK (pspec_ref_count);
- if (pspec->ref_count > 0)
- {
- gboolean need_finalize;
-
- /* sync with _sink */
- pspec->ref_count -= 1;
- need_finalize = pspec->ref_count == 0;
- G_UNLOCK (pspec_ref_count);
- if (need_finalize)
- G_PARAM_SPEC_GET_CLASS (pspec)->finalize (pspec);
- }
- else
+ is_zero = g_atomic_int_dec_and_test (&pspec->ref_count);
+
+ if (G_UNLIKELY (is_zero))
{
- G_UNLOCK (pspec_ref_count);
- g_return_if_fail (pspec->ref_count > 0);
+ G_PARAM_SPEC_GET_CLASS (pspec)->finalize (pspec);
}
}
+/**
+ * g_param_spec_sink:
+ * @pspec: a valid #GParamSpec
+ *
+ * The initial reference count of a newly created #GParamSpec is 1, even
+ * though no one has explicitly called g_param_spec_ref() on it yet. So the
+ * initial reference count is flagged as "floating", until someone calls
+ * <literal>g_param_spec_ref (pspec); g_param_spec_sink (pspec);</literal>
+ * in sequence on it, taking over the initial reference count (thus
+ * ending up with a @pspec that has a reference count of 1 still, but is
+ * not flagged "floating" anymore).
+ */
void
g_param_spec_sink (GParamSpec *pspec)
{
+ gpointer oldvalue;
g_return_if_fail (G_IS_PARAM_SPEC (pspec));
+ g_return_if_fail (pspec->ref_count > 0);
+
+ do
+ oldvalue = g_atomic_pointer_get (&pspec->qdata);
+ while (!g_atomic_pointer_compare_and_exchange ((void**) &pspec->qdata, oldvalue,
+ (gpointer) ((gsize) oldvalue & ~(gsize) PARAM_FLOATING_FLAG)));
+ if ((gsize) oldvalue & PARAM_FLOATING_FLAG)
+ g_param_spec_unref (pspec);
+}
- G_LOCK (pspec_ref_count);
- if (pspec->ref_count > 0)
- {
- if (g_datalist_id_remove_no_notify (&pspec->qdata, quark_floating))
- {
- /* sync with _unref */
- if (pspec->ref_count > 1)
- pspec->ref_count -= 1;
- else
- {
- G_UNLOCK (pspec_ref_count);
- g_param_spec_unref (pspec);
+/**
+ * g_param_spec_ref_sink:
+ * @pspec: a valid #GParamSpec
+ *
+ * Convenience function to ref and sink a #GParamSpec.
+ *
+ * Since: 2.10
+ * Returns: the #GParamSpec that was passed into this function
+ */
+GParamSpec*
+g_param_spec_ref_sink (GParamSpec *pspec)
+{
+ g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
+ g_return_val_if_fail (pspec->ref_count > 0, NULL);
- return;
- }
- }
- G_UNLOCK (pspec_ref_count);
- }
- else
- {
- G_UNLOCK (pspec_ref_count);
- g_return_if_fail (pspec->ref_count > 0);
- }
+ g_param_spec_ref (pspec);
+ g_param_spec_sink (pspec);
+ return pspec;
}
+/**
+ * g_param_spec_get_name:
+ * @pspec: a valid #GParamSpec
+ *
+ * Get the name of a #GParamSpec.
+ *
+ * Returns: the name of @pspec.
+ */
G_CONST_RETURN gchar*
g_param_spec_get_name (GParamSpec *pspec)
{
return pspec->name;
}
+/**
+ * g_param_spec_get_nick:
+ * @pspec: a valid #GParamSpec
+ *
+ * Get the nickname of a #GParamSpec.
+ *
+ * Returns: the nickname of @pspec.
+ */
G_CONST_RETURN gchar*
g_param_spec_get_nick (GParamSpec *pspec)
{
g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
- return pspec->_nick ? pspec->_nick : pspec->name;
+ if (pspec->_nick)
+ return pspec->_nick;
+ else
+ {
+ GParamSpec *redirect_target;
+
+ redirect_target = g_param_spec_get_redirect_target (pspec);
+ if (redirect_target && redirect_target->_nick)
+ return redirect_target->_nick;
+ }
+
+ return pspec->name;
}
+/**
+ * g_param_spec_get_blurb:
+ * @pspec: a valid #GParamSpec
+ *
+ * Get the short description of a #GParamSpec.
+ *
+ * Returns: the short description of @pspec.
+ */
G_CONST_RETURN gchar*
g_param_spec_get_blurb (GParamSpec *pspec)
{
g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
- return pspec->_blurb;
+ if (pspec->_blurb)
+ return pspec->_blurb;
+ else
+ {
+ GParamSpec *redirect_target;
+
+ redirect_target = g_param_spec_get_redirect_target (pspec);
+ if (redirect_target && redirect_target->_blurb)
+ return redirect_target->_blurb;
+ }
+
+ return NULL;
}
static void
-canonalize_key(gchar *key)
+canonicalize_key (gchar *key)
{
- gchar *p, c;
-
- for (p = key; (c = *p) != 0; p++)
+ gchar *p;
+
+ for (p = key; *p != 0; p++)
{
+ gchar c = *p;
+
if (c != '-' &&
(c < '0' || c > '9') &&
(c < 'A' || c > 'Z') &&
}
}
+static gboolean
+is_canonical (const gchar *key)
+{
+ const gchar *p;
+
+ for (p = key; *p != 0; p++)
+ {
+ gchar c = *p;
+
+ if (c != '-' &&
+ (c < '0' || c > '9') &&
+ (c < 'A' || c > 'Z') &&
+ (c < 'a' || c > 'z'))
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+/**
+ * g_param_spec_internal:
+ * @param_type: the #GType for the property; must be derived from #G_TYPE_PARAM
+ * @name: the canonical name of the property
+ * @nick: the nickname of the property
+ * @blurb: a short description of the property
+ * @flags: a combination of #GParamFlags
+ *
+ * Creates a new #GParamSpec instance.
+ *
+ * A property name consists of segments consisting of ASCII letters and
+ * digits, separated by either the '-' or '_' character. The first
+ * character of a property name must be a letter. Names which violate these
+ * rules lead to undefined behaviour.
+ *
+ * When creating and looking up a #GParamSpec, either separator can be used,
+ * but they cannot be mixed. Using '-' is considerably more efficient and in
+ * fact required when using property names as detail strings for signals.
+ *
+ * Beyond the name, #GParamSpec<!-- -->s have two more descriptive strings
+ * associated with them, the @nick, which should be suitable for use as
+ * a label for the property in a property editor, and the @blurb, which should
+ * be a somewhat longer description, suitable for e.g. a tooltip. The @nick
+ * and @blurb should ideally be localized.
+ *
+ * Returns: a newly allocated #GParamSpec instance
+ */
gpointer
g_param_spec_internal (GType param_type,
const gchar *name,
GParamFlags flags)
{
GParamSpec *pspec;
-
+
g_return_val_if_fail (G_TYPE_IS_PARAM (param_type) && param_type != G_TYPE_PARAM, NULL);
g_return_val_if_fail (name != NULL, NULL);
g_return_val_if_fail ((name[0] >= 'A' && name[0] <= 'Z') || (name[0] >= 'a' && name[0] <= 'z'), NULL);
-
+ g_return_val_if_fail (!(flags & G_PARAM_STATIC_NAME) || is_canonical (name), NULL);
+
pspec = (gpointer) g_type_create_instance (param_type);
- pspec->name = g_strdup (name);
- canonalize_key (pspec->name);
- pspec->_nick = g_strdup (nick);
- pspec->_blurb = g_strdup (blurb);
- pspec->flags = (flags & G_PARAM_USER_MASK) | (flags & G_PARAM_MASK);
+ if (flags & G_PARAM_STATIC_NAME)
+ {
+ pspec->name = g_intern_static_string (name);
+ if (!is_canonical (pspec->name))
+ g_warning ("G_PARAM_STATIC_NAME used with non-canonical pspec name: %s", pspec->name);
+ }
+ else
+ {
+ pspec->name = g_strdup (name);
+ canonicalize_key (pspec->name);
+ g_intern_string (pspec->name);
+ }
+
+ if (flags & G_PARAM_STATIC_NICK)
+ pspec->_nick = (gchar*) nick;
+ else
+ pspec->_nick = g_strdup (nick);
+
+ if (flags & G_PARAM_STATIC_BLURB)
+ pspec->_blurb = (gchar*) blurb;
+ else
+ pspec->_blurb = g_strdup (blurb);
+
+ pspec->flags = (flags & G_PARAM_USER_MASK) | (flags & G_PARAM_MASK);
+
return pspec;
}
+/**
+ * g_param_spec_get_qdata:
+ * @pspec: a valid #GParamSpec
+ * @quark: a #GQuark, naming the user data pointer
+ *
+ * Gets back user data pointers stored via g_param_spec_set_qdata().
+ *
+ * Returns: the user data pointer set, or %NULL
+ */
gpointer
g_param_spec_get_qdata (GParamSpec *pspec,
GQuark quark)
return quark ? g_datalist_id_get_data (&pspec->qdata, quark) : NULL;
}
+/**
+ * g_param_spec_set_qdata:
+ * @pspec: the #GParamSpec to set store a user data pointer
+ * @quark: a #GQuark, naming the user data pointer
+ * @data: an opaque user data pointer
+ *
+ * Sets an opaque, named pointer on a #GParamSpec. The name is specified
+ * through a #GQuark (retrieved e.g. via g_quark_from_static_string()), and
+ * the pointer can be gotten back from the @pspec with g_param_spec_get_qdata().
+ * Setting a previously set user data pointer, overrides (frees)
+ * the old pointer set, using %NULL as pointer essentially
+ * removes the data stored.
+ */
void
g_param_spec_set_qdata (GParamSpec *pspec,
GQuark quark,
g_datalist_id_set_data (&pspec->qdata, quark, data);
}
+/**
+ * g_param_spec_set_qdata_full:
+ * @pspec: the #GParamSpec to set store a user data pointer
+ * @quark: a #GQuark, naming the user data pointer
+ * @data: an opaque user data pointer
+ * @destroy: function to invoke with @data as argument, when @data needs to
+ * be freed
+ *
+ * This function works like g_param_spec_set_qdata(), but in addition,
+ * a <literal>void (*destroy) (gpointer)</literal> function may be
+ * specified which is called with @data as argument when the @pspec is
+ * finalized, or the data is being overwritten by a call to
+ * g_param_spec_set_qdata() with the same @quark.
+ */
void
g_param_spec_set_qdata_full (GParamSpec *pspec,
GQuark quark,
g_datalist_id_set_data_full (&pspec->qdata, quark, data, data ? destroy : (GDestroyNotify) NULL);
}
+/**
+ * g_param_spec_steal_qdata:
+ * @pspec: the #GParamSpec to get a stored user data pointer from
+ * @quark: a #GQuark, naming the user data pointer
+ *
+ * Gets back user data pointers stored via g_param_spec_set_qdata() and
+ * removes the @data from @pspec without invoking it's destroy() function
+ * (if any was set).
+ * Usually, calling this function is only required to update
+ * user data pointers with a destroy notifier.
+ *
+ * Returns: the user data pointer set, or %NULL
+ */
gpointer
g_param_spec_steal_qdata (GParamSpec *pspec,
GQuark quark)
return g_datalist_id_remove_no_notify (&pspec->qdata, quark);
}
+/**
+ * g_param_spec_get_redirect_target:
+ * @pspec: a #GParamSpec
+ *
+ * If the paramspec redirects operations to another paramspec,
+ * returns that paramspec. Redirect is used typically for
+ * providing a new implementation of a property in a derived
+ * type while preserving all the properties from the parent
+ * type. Redirection is established by creating a property
+ * of type #GParamSpecOverride. See g_object_class_override_property()
+ * for an example of the use of this capability.
+ *
+ * Since: 2.4
+ * Returns: paramspec to which requests on this paramspec should
+ * be redirected, or %NULL if none.
+ */
+GParamSpec*
+g_param_spec_get_redirect_target (GParamSpec *pspec)
+{
+ g_return_val_if_fail (G_IS_PARAM_SPEC (pspec), NULL);
+
+ if (G_IS_PARAM_SPEC_OVERRIDE (pspec))
+ {
+ GParamSpecOverride *ospec = G_PARAM_SPEC_OVERRIDE (pspec);
+
+ return ospec->overridden;
+ }
+ else
+ return NULL;
+}
+
+/**
+ * g_param_value_set_default:
+ * @pspec: a valid #GParamSpec
+ * @value: a #GValue of correct type for @pspec
+ *
+ * Sets @value to its default value as specified in @pspec.
+ */
void
g_param_value_set_default (GParamSpec *pspec,
GValue *value)
G_PARAM_SPEC_GET_CLASS (pspec)->value_set_default (pspec, value);
}
+/**
+ * g_param_value_defaults:
+ * @pspec: a valid #GParamSpec
+ * @value: a #GValue of correct type for @pspec
+ *
+ * Checks whether @value contains the default value as specified in @pspec.
+ *
+ * Returns: whether @value contains the canonical default for this @pspec
+ */
gboolean
g_param_value_defaults (GParamSpec *pspec,
GValue *value)
return defaults;
}
+/**
+ * g_param_value_validate:
+ * @pspec: a valid #GParamSpec
+ * @value: a #GValue of correct type for @pspec
+ *
+ * Ensures that the contents of @value comply with the specifications
+ * set out by @pspec. For example, a #GParamSpecInt might require
+ * that integers stored in @value may not be smaller than -42 and not be
+ * greater than +42. If @value contains an integer outside of this range,
+ * it is modified accordingly, so the resulting value will fit into the
+ * range -42 .. +42.
+ *
+ * Returns: whether modifying @value was necessary to ensure validity
+ */
gboolean
g_param_value_validate (GParamSpec *pspec,
GValue *value)
return FALSE;
}
+/**
+ * g_param_value_convert:
+ * @pspec: a valid #GParamSpec
+ * @src_value: souce #GValue
+ * @dest_value: destination #GValue of correct type for @pspec
+ * @strict_validation: %TRUE requires @dest_value to conform to @pspec without modifications
+ *
+ * Transforms @src_value into @dest_value if possible, and then validates
+ * @dest_value, in order for it to conform to @pspec.
+ * If @strict_validation is %TRUE this function will only succeed if
+ * the transformed @dest_value complied to @pspec without modifications.
+ *
+ * See also g_value_type_transformable(), g_value_transform() and
+ * g_param_value_validate().
+ *
+ * Returns: %TRUE if transformation and validation were successful,
+ * %FALSE otherwise and @dest_value is left untouched.
+ */
gboolean
g_param_value_convert (GParamSpec *pspec,
const GValue *src_value,
}
}
+/**
+ * g_param_values_cmp:
+ * @pspec: a valid #GParamSpec
+ * @value1: a #GValue of correct type for @pspec
+ * @value2: a #GValue of correct type for @pspec
+ *
+ * Compares @value1 with @value2 according to @pspec, and return -1, 0 or +1,
+ * if @value1 is found to be less than, equal to or greater than @value2,
+ * respectively.
+ *
+ * Returns: -1, 0 or +1, for a less than, equal to or greater than result
+ */
gint
g_param_values_cmp (GParamSpec *pspec,
const GValue *value1,
/* --- param spec pool --- */
+/**
+ * GParamSpecPool:
+ *
+ * A #GParamSpecPool maintains a collection of #GParamSpec<!-- -->s which can be
+ * quickly accessed by owner and name. The implementation of the #GObject property
+ * system uses such a pool to store the #GParamSpecs of the properties all object
+ * types.
+ */
struct _GParamSpecPool
{
GStaticMutex smutex;
strcmp (key1->name, key2->name) == 0);
}
+/**
+ * g_param_spec_pool_new:
+ * @type_prefixing: Whether the pool will support type-prefixed property names.
+ *
+ * Creates a new #GParamSpecPool.
+ *
+ * If @type_prefixing is %TRUE, lookups in the newly created pool will
+ * allow to specify the owner as a colon-separated prefix of the property name,
+ * like "GtkContainer:border-width". This feature is deprecated, so you should
+ * always set @type_prefixing to %FALSE.
+ *
+ * Returns: a newly allocated #GParamSpecPool.
+ */
GParamSpecPool*
g_param_spec_pool_new (gboolean type_prefixing)
{
return pool;
}
-void
+/**
+ * g_param_spec_pool_insert:
+ * @pool: a #GParamSpecPool.
+ * @pspec: the #GParamSpec to insert
+ * @owner_type: a #GType identifying the owner of @pspec
+ *
+ * Inserts a #GParamSpec in the pool.
+ */void
g_param_spec_pool_insert (GParamSpecPool *pool,
GParamSpec *pspec,
GType owner_type)
}
}
+/**
+ * g_param_spec_pool_remove:
+ * @pool: a #GParamSpecPool
+ * @pspec: the #GParamSpec to remove
+ *
+ * Removes a #GParamSpec from the pool.
+ */
void
g_param_spec_pool_remove (GParamSpecPool *pool,
GParamSpec *pspec)
else
pspec = g_hash_table_lookup (hash_table, &key);
- if (!pspec)
+ if (!pspec && !is_canonical (param_name))
{
/* try canonicalized form */
key.name = g_strdup (param_name);
key.owner_type = owner_type;
- canonalize_key (key.name);
+ canonicalize_key (key.name);
if (walk_ancestors)
do
{
return pspec;
}
+/**
+ * g_param_spec_pool_lookup:
+ * @pool: a #GParamSpecPool
+ * @param_name: the name to look for
+ * @owner_type: the owner to look for
+ * @walk_ancestors: If %TRUE, also try to find a #GParamSpec with @param_name
+ * owned by an ancestor of @owner_type.
+ *
+ * Looks up a #GParamSpec in the pool.
+ *
+ * Returns: The found #GParamSpec, or %NULL if no matching #GParamSpec was found.
+ */
GParamSpec*
g_param_spec_pool_lookup (GParamSpecPool *pool,
const gchar *param_name,
data[0] = g_list_prepend (data[0], pspec);
}
+/**
+ * g_param_spec_pool_list_owned:
+ * @pool: a #GParamSpecPool
+ * @owner_type: the owner to look for
+ *
+ * Gets an #GList of all #GParamSpec<!-- -->s owned by @owner_type in the pool.
+ *
+ * Returns: a #GList of all #GParamSpec<!-- -->s owned by @owner_type in
+ * the pool#GParamSpec<!-- -->s.
+ */
GList*
g_param_spec_pool_list_owned (GParamSpecPool *pool,
GType owner_type)
}
static inline GSList*
-pspec_list_remove_overridden (GSList *plist,
- GHashTable *ht,
- GType owner_type,
- guint *n_p)
+pspec_list_remove_overridden_and_redirected (GSList *plist,
+ GHashTable *ht,
+ GType owner_type,
+ guint *n_p)
{
GSList *rlist = NULL;
{
GSList *tmp = plist->next;
GParamSpec *pspec = plist->data;
+ GParamSpec *found;
+ gboolean remove = FALSE;
+
+ /* Remove paramspecs that are redirected, and also paramspecs
+ * that have are overridden by non-redirected properties.
+ * The idea is to get the single paramspec for each name that
+ * best corresponds to what the application sees.
+ */
+ if (g_param_spec_get_redirect_target (pspec))
+ remove = TRUE;
+ else
+ {
+ found = param_spec_ht_lookup (ht, pspec->name, owner_type, TRUE);
+ if (found != pspec)
+ {
+ GParamSpec *redirect = g_param_spec_get_redirect_target (found);
+ if (redirect != pspec)
+ remove = TRUE;
+ }
+ }
- if (param_spec_ht_lookup (ht, pspec->name, owner_type, TRUE) != pspec)
- g_slist_free_1 (plist);
+ if (remove)
+ {
+ g_slist_free_1 (plist);
+ }
else
{
plist->next = rlist;
if (g_type_is_a (owner_type, pspec->owner_type))
{
- guint d = g_type_depth (pspec->owner_type);
+ if (G_TYPE_IS_INTERFACE (pspec->owner_type))
+ {
+ slists[0] = g_slist_prepend (slists[0], pspec);
+ }
+ else
+ {
+ guint d = g_type_depth (pspec->owner_type);
- slists[d - 1] = g_slist_prepend (slists[d - 1], pspec);
+ slists[d - 1] = g_slist_prepend (slists[d - 1], pspec);
+ }
}
}
-GParamSpec** /* free result */
+/* We handle interfaces specially since we don't want to
+ * count interface prerequisites like normal inheritance;
+ * the property comes from the direct inheritance from
+ * the prerequisite class, not from the interface that
+ * prerequires it.
+ *
+ * also 'depth' isn't a meaningful concept for interface
+ * prerequites.
+ */
+static void
+pool_depth_list_for_interface (gpointer key,
+ gpointer value,
+ gpointer user_data)
+{
+ GParamSpec *pspec = value;
+ gpointer *data = user_data;
+ GSList **slists = data[0];
+ GType owner_type = (GType) data[1];
+
+ if (pspec->owner_type == owner_type)
+ slists[0] = g_slist_prepend (slists[0], pspec);
+}
+
+/**
+ * g_param_spec_pool_list:
+ * @pool: a #GParamSpecPool
+ * @owner_type: the owner to look for
+ * @n_pspecs_p: return location for the length of the returned array
+ *
+ * Gets an array of all #GParamSpec<!-- -->s owned by @owner_type in the pool.
+ *
+ * Returns: a newly allocated array containing pointers to all
+ * #GParamSpec<!-- -->s owned by @owner_type in the pool
+ */
+GParamSpec**
g_param_spec_pool_list (GParamSpecPool *pool,
GType owner_type,
guint *n_pspecs_p)
slists = g_new0 (GSList*, d);
data[0] = slists;
data[1] = (gpointer) owner_type;
- g_hash_table_foreach (pool->hash_table, pool_depth_list, &data);
- for (i = 0; i < d - 1; i++)
- slists[i] = pspec_list_remove_overridden (slists[i], pool->hash_table, owner_type, n_pspecs_p);
- *n_pspecs_p += g_slist_length (slists[i]);
+
+ g_hash_table_foreach (pool->hash_table,
+ G_TYPE_IS_INTERFACE (owner_type) ?
+ pool_depth_list_for_interface :
+ pool_depth_list,
+ &data);
+
+ for (i = 0; i < d; i++)
+ slists[i] = pspec_list_remove_overridden_and_redirected (slists[i], pool->hash_table, owner_type, n_pspecs_p);
pspecs = g_new (GParamSpec*, *n_pspecs_p + 1);
p = pspecs;
for (i = 0; i < d; i++)
return memcmp (&value1->data, &value2->data, sizeof (value1->data));
}
+/**
+ * g_param_type_register_static:
+ * @name: 0-terminated string used as the name of the new #GParamSpec type.
+ * @pspec_info: The #GParamSpecTypeInfo for this #GParamSpec type.
+ *
+ * Registers @name as the name of a new static type derived from
+ * #G_TYPE_PARAM. The type system uses the information contained in the
+ * #GParamSpecTypeInfo structure pointed to by @info to manage the #GParamSpec
+ * type and its instances.
+ *
+ * Returns: The new type identifier.
+ */
GType
g_param_type_register_static (const gchar *name,
const GParamSpecTypeInfo *pspec_info)
return g_type_register_static (G_TYPE_PARAM, name, &info, 0);
}
+/**
+ * g_value_set_param:
+ * @value: a valid #GValue of type %G_TYPE_PARAM
+ * @param: the #GParamSpec to be set
+ *
+ * Set the contents of a %G_TYPE_PARAM #GValue to @param.
+ */
void
g_value_set_param (GValue *value,
GParamSpec *param)
g_param_spec_ref (value->data[0].v_pointer);
}
+/**
+ * g_value_set_param_take_ownership:
+ * @value: a valid #GValue of type %G_TYPE_PARAM
+ * @param: the #GParamSpec to be set
+ *
+ * This is an internal function introduced mainly for C marshallers.
+ *
+ * Deprecated: 2.4: Use g_value_take_param() instead.
+ */
void
g_value_set_param_take_ownership (GValue *value,
GParamSpec *param)
{
+ g_value_take_param (value, param);
+}
+
+/**
+ * g_value_take_param:
+ * @value: a valid #GValue of type %G_TYPE_PARAM
+ * @param: the #GParamSpec to be set
+ *
+ * Sets the contents of a %G_TYPE_PARAM #GValue to @param and
+ * takes over the ownership of the callers reference to @param;
+ * the caller doesn't have to unref it any more.
+ *
+ * Since: 2.4
+ */
+void
+g_value_take_param (GValue *value,
+ GParamSpec *param)
+{
g_return_if_fail (G_VALUE_HOLDS_PARAM (value));
if (param)
g_return_if_fail (G_IS_PARAM_SPEC (param));
value->data[0].v_pointer = param; /* we take over the reference count */
}
+/**
+ * g_value_get_param:
+ * @value: a valid #GValue whose type is derived from %G_TYPE_PARAM
+ *
+ * Get the contents of a %G_TYPE_PARAM #GValue.
+ *
+ * Returns: #GParamSpec content of @value
+ */
GParamSpec*
g_value_get_param (const GValue *value)
{
return value->data[0].v_pointer;
}
+/**
+ * g_value_dup_param:
+ * @value: a valid #GValue whose type is derived from %G_TYPE_PARAM
+ *
+ * Get the contents of a %G_TYPE_PARAM #GValue, increasing its reference count.
+ *
+ * Returns: #GParamSpec content of @value, should be unreferenced when no longer needed.
+ */
GParamSpec*
g_value_dup_param (const GValue *value)
{
return value->data[0].v_pointer ? g_param_spec_ref (value->data[0].v_pointer) : NULL;
}
+
+#define __G_PARAM_C__
+#include "gobjectaliasdef.c"
projects / platform / upstream / glib.git / blobdiff