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a11y: Notify callers when an attributes set changes

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We can use that information inside the ATContext.
This commit is contained in:
Emmanuele Bassi 2020-08-05 18:04:34 +01:00
parent 1338dcddcb
commit 32a1cd13c8
2 changed files with 35 additions and 6 deletions
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37
gtk/gtkaccessibleattributeset.c
View File

@ -114,13 +114,26 @@ gtk_accessible_attribute_set_unref (GtkAccessibleAttributeSet *self)
*
* If you want to remove @attribute from the set, use gtk_accessible_attribute_set_remove()
* instead.
*
* Returns: %TRUE if the set was modified, and %FALSE otherwise
*/
void
gboolean
gtk_accessible_attribute_set_add (GtkAccessibleAttributeSet *self,
int attribute,
GtkAccessibleValue *value)
{
g_return_if_fail (attribute >= 0 && attribute < self->n_attributes);
g_return_val_if_fail (attribute >= 0 && attribute < self->n_attributes, FALSE);
if (value != NULL)
{
if (gtk_accessible_value_equal (value, self->attribute_values[attribute]))
return FALSE;
}
else
{
if (!_gtk_bitmask_get (self->attributes_set, attribute))
return FALSE;
}
g_clear_pointer (&(self->attribute_values[attribute]), gtk_accessible_value_unref);
@ -130,18 +143,34 @@ gtk_accessible_attribute_set_add (GtkAccessibleAttributeSet *self,
self->attribute_values[attribute] = (* self->default_func) (attribute);
self->attributes_set = _gtk_bitmask_set (self->attributes_set, attribute, TRUE);
return TRUE;
}
void
/*< private >
* gtk_accessible_attribute_set_remove:
* @self: a #GtkAccessibleAttributeSet
* @attribute: the attribute to be removed
*
* Resets the @attribute in the given #GtkAccessibleAttributeSet to its default value.
*
* Returns: %TRUE if the set was modified, and %FALSE otherwise
*/
gboolean
gtk_accessible_attribute_set_remove (GtkAccessibleAttributeSet *self,
int attribute)
{
g_return_if_fail (attribute >= 0 && attribute < self->n_attributes);
g_return_val_if_fail (attribute >= 0 && attribute < self->n_attributes, FALSE);
if (!_gtk_bitmask_get (self->attributes_set, attribute))
return FALSE;
g_clear_pointer (&(self->attribute_values[attribute]), gtk_accessible_value_unref);
self->attribute_values[attribute] = (* self->default_func) (attribute);
self->attributes_set = _gtk_bitmask_set (self->attributes_set, attribute, FALSE);
return TRUE;
}
gboolean

4
gtk/gtkaccessibleattributesetprivate.h
View File

@ -37,10 +37,10 @@ void gtk_accessible_attribute_set_unref
gsize gtk_accessible_attribute_set_get_length (GtkAccessibleAttributeSet *self);
void gtk_accessible_attribute_set_add (GtkAccessibleAttributeSet *self,
gboolean gtk_accessible_attribute_set_add (GtkAccessibleAttributeSet *self,
int attribute,
GtkAccessibleValue *value);
void gtk_accessible_attribute_set_remove (GtkAccessibleAttributeSet *self,
gboolean gtk_accessible_attribute_set_remove (GtkAccessibleAttributeSet *self,
int state);
gboolean gtk_accessible_attribute_set_contains (GtkAccessibleAttributeSet *self,
int state);