#include <string.h>
#include "bridge.h"
+#include "tree-adaptor.h"
#include "accessible-register.h"
/*
*/
#define SPI_ATK_OBJECT_PATH_PREFIX "/org/freedesktop/atspi/accessible"
-#define SPI_ATK_OBJECT_PATH_DESKTOP "/root"
+#define SPI_ATK_OBJECT_PATH_DESKTOP "/desktop"
#define SPI_ATK_PATH_PREFIX_LENGTH 33
#define SPI_ATK_OBJECT_REFERENCE_TEMPLATE SPI_ATK_OBJECT_PATH_PREFIX "/%d"
static GHashTable *ref2ptr = NULL; /* Used for converting a D-Bus path (Reference) to the object pointer */
+static GHashTable *objects_with_subrefs = NULL;
+static GHashTable *leased_refs = NULL;
+static int leased_refs_count;
static guint reference_counter = 0;
static GStaticMutex recursion_check_guard = G_STATIC_MUTEX_INIT;
static gboolean recursion_check = FALSE;
+static int last_gc_time;
+
+static void deregister_sub_accessible (gpointer key, gpointer obj_data, gpointer iter);
+
+static void deregister_sub_hyperlink (gpointer key, gpointer obj_data, gpointer iter);
static gboolean
recursion_check_and_set ()
/* Reference of 0 not allowed as used as direct key in hash table */
if (reference_counter == 0)
reference_counter++;
+ /* TODO: If we've wrapped, ensure that two objects don't have the same ref */
return reference_counter;
}
* Returns the reference of the object, or 0 if it is not registered.
*/
static guint
+gobject_to_ref (GObject *gobj)
+{
+ return GPOINTER_TO_INT(g_object_get_data (gobj, "dbus-id"));
+}
+
+static guint
object_to_ref (AtkObject *accessible)
{
- return GPOINTER_TO_INT(g_object_get_data (G_OBJECT (accessible), "dbus-id"));
+ return gobject_to_ref (G_OBJECT (accessible));
+}
+
+static guint
+hyperlink_to_ref (AtkHyperlink *link)
+{
+ return gobject_to_ref (G_OBJECT (link));
}
/*
* Converts the Accessible object reference to its D-Bus object path
*/
-static gchar *
-ref_to_path (guint ref)
+gchar *
+atk_dbus_ref_to_path (guint ref)
{
return g_strdup_printf(SPI_ATK_OBJECT_REFERENCE_TEMPLATE, ref);
}
* it is no longer exposed over D-Bus.
*/
static void
-deregister_accessible (gpointer data, GObject *accessible)
+deregister_object (gpointer data, GObject *gobj)
{
guint ref;
- g_return_if_fail (ATK_IS_OBJECT (accessible));
+ GHashTable *subrefs_atk;
+ GHashTable *subrefs_hyperlink;
+ g_return_if_fail (ATK_IS_OBJECT (gobj) || ATK_IS_HYPERLINK (gobj));
+
+ subrefs_atk = (GHashTable *) g_object_get_data (gobj, "dbus-subrefs-atk");
+ subrefs_hyperlink = (GHashTable *) g_object_get_data (gobj, "dbus-subrefs-hyperlink");
+
+ if (subrefs_atk)
+ {
+ g_hash_table_foreach (subrefs_atk, deregister_sub_accessible, data);
+ g_hash_table_unref (subrefs_atk);
+ }
+
+ if (subrefs_hyperlink)
+ {
+ g_hash_table_foreach (subrefs_hyperlink, deregister_sub_hyperlink, data);
+ g_hash_table_unref (subrefs_hyperlink);
+ }
+
+ if (subrefs_atk || subrefs_hyperlink)
+ g_hash_table_remove (objects_with_subrefs, gobj);
+
+ if (ATK_IS_OBJECT (gobj))
+ {
+ ref = object_to_ref (ATK_OBJECT (gobj));
+ if (ref != 0)
+ {
+ spi_emit_cache_removal (ref, atk_adaptor_app_data->bus);
+ g_hash_table_remove(ref2ptr, GINT_TO_POINTER(ref));
+ }
+ }
+ }
+
+static void
+deregister_sub_accessible (gpointer key, gpointer obj_data, gpointer iter)
+{
+ GObject *obj = G_OBJECT (obj_data);
+ deregister_object (NULL, obj);
+ g_hash_table_remove (leased_refs, obj);
+ g_object_unref (obj);
+}
+
+static void
+deregister_sub_hyperlink (gpointer key, gpointer obj_data, gpointer iter)
+{
+ guint ref;
+ GObject *ghyperlink = G_OBJECT (obj_data);
- ref = object_to_ref (ATK_OBJECT(accessible));
+ g_return_if_fail (ATK_IS_HYPERLINK (ghyperlink));
+
+ ref = gobject_to_ref (ghyperlink);
if (ref != 0)
{
g_hash_table_remove(ref2ptr, GINT_TO_POINTER(ref));
}
+ g_object_unref (ghyperlink);
+}
+
+static void
+register_gobject (GObject *gobj, GObject *container)
+{
+ guint ref;
+ g_return_if_fail (G_IS_OBJECT(gobj));
+
+ ref = assign_reference();
+
+ g_hash_table_insert (ref2ptr, GINT_TO_POINTER(ref), gobj);
+ g_object_set_data (G_OBJECT(gobj), "dbus-id", GINT_TO_POINTER(ref));
+ g_object_weak_ref(G_OBJECT(gobj), deregister_object, NULL);
+
+ if (container)
+ {
+ GHashTable *subrefs = (GHashTable *) g_object_get_data (G_OBJECT (container), "dbus-subrefs-atk");
+ if (!subrefs)
+ {
+ subrefs = g_hash_table_new(g_direct_hash, g_direct_equal);
+ g_object_set_data (G_OBJECT (container), "dbus-subrefs-atk", subrefs);
+ }
+ g_hash_table_insert (subrefs, GINT_TO_POINTER(ref), gobj);
+ g_hash_table_insert (objects_with_subrefs, gobj, subrefs);
+ }
+
+ if (ATK_IS_HYPERLINK (gobj))
+ g_object_ref (gobj);
+ else if (ATK_IS_OBJECT (gobj))
+ {
+ AtkObject *accessible = ATK_OBJECT (gobj);
+ AtkStateSet *state = atk_object_ref_state_set (accessible);
+ if (atk_state_set_contains_state (state, ATK_STATE_TRANSIENT))
+ {
+ g_object_ref (gobj);
+ }
+ g_object_unref (state);
+ }
}
/*
* Called to register an AtkObject with AT-SPI and expose it over D-Bus.
*/
static void
-register_accessible (AtkObject *accessible)
+register_accessible (AtkObject *accessible, AtkObject *container)
{
- guint ref;
g_return_if_fail (ATK_IS_OBJECT(accessible));
+ register_gobject (G_OBJECT (accessible), G_OBJECT (container));
+}
+
+static void
+register_hyperlink (AtkHyperlink *hyperlink, AtkObject *container)
+{
+ guint ref;
+ g_return_if_fail (ATK_IS_HYPERLINK (hyperlink));
+ g_return_if_fail (container);
+
ref = assign_reference();
- g_hash_table_insert (ref2ptr, GINT_TO_POINTER(ref), accessible);
- g_object_set_data (G_OBJECT(accessible), "dbus-id", GINT_TO_POINTER(ref));
- g_object_weak_ref(G_OBJECT(accessible), deregister_accessible, NULL);
+ g_hash_table_insert (ref2ptr, GINT_TO_POINTER(ref), hyperlink);
+ g_object_set_data (G_OBJECT(hyperlink), "dbus-id", GINT_TO_POINTER(ref));
+ g_object_ref (G_OBJECT (hyperlink));
+
+ GHashTable *subrefs = (GHashTable *) g_object_get_data (G_OBJECT (container), "dbus-subrefs-hyperlink");
+ if (!subrefs)
+ {
+ subrefs = g_hash_table_new(g_direct_hash, g_direct_equal);
+ g_object_set_data (G_OBJECT (container), "dbus-subrefs-hyperlink", GINT_TO_POINTER(ref));
+ }
+ g_hash_table_insert (subrefs, GINT_TO_POINTER(ref), hyperlink);
}
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
+/* TRUE if we should not keep this object / tell the AT about it
+ * Currently true if TRANSIENT and not SHOWING
+ */
static gboolean
-has_manages_descendants (AtkObject *accessible)
+object_is_moot (AtkObject *accessible)
{
AtkStateSet *state;
gboolean result = FALSE;
* by modifying the tree alot.
*/
state = atk_object_ref_state_set (accessible);
- if (atk_state_set_contains_state (state, ATK_STATE_MANAGES_DESCENDANTS))
+ if ( atk_state_set_contains_state (state, ATK_STATE_TRANSIENT) &&
+ !atk_state_set_contains_state (state, ATK_STATE_SHOWING))
{
-#ifdef SPI_ATK_DEBUG
- g_warning ("AT-SPI: Object with 'Manages descendants' states not currently handled by AT-SPI");
-#endif
result = TRUE;
}
g_object_unref (state);
{
AtkObject *current;
guint i;
+ gint count = atk_object_get_n_accessible_children (accessible);
- for (i =0; i < atk_object_get_n_accessible_children (accessible); i++)
+ if (count < 0) count = 0;
+ for (i =0; i < count; i++)
{
current = atk_object_ref_accessible_child (accessible, i);
+ if (current)
+ {
#ifdef SPI_ATK_DEBUG
- non_owned_accessible (current);
+ non_owned_accessible (current);
#endif
- if (!has_manages_descendants (current))
- {
g_queue_push_tail (traversal, current);
}
- else
- {
- g_object_unref (G_OBJECT (current));
- }
}
}
g_queue_push_tail (emit_update, current);
if (!object_to_ref (current))
{
- register_accessible (current);
+ register_accessible (current, NULL);
#ifdef SPI_ATK_DEBUG
g_debug ("REG - %s - %d - %s", atk_object_get_name (current),
atk_object_get_role (current),
/*
* Used to lookup an AtkObject from its D-Bus path.
*/
-AtkObject *
-atk_dbus_path_to_object (const char *path)
+GObject *
+atk_dbus_path_to_gobject (const char *path)
{
guint index;
void *data;
path += SPI_ATK_PATH_PREFIX_LENGTH; /* Skip over the prefix */
if (!g_strcmp0 (SPI_ATK_OBJECT_PATH_DESKTOP, path))
- return atk_get_root();
+ return G_OBJECT (atk_get_root());
if (path[0] != '/')
return NULL;
index = atoi (path);
data = g_hash_table_lookup (ref2ptr, GINT_TO_POINTER(index));
if (data)
- return ATK_OBJECT (data);
+ {
+ GObject *gobj = G_OBJECT (data);
+ g_object_set_data (gobj, "last-ref-time", (gpointer) time (NULL));
+ return gobj;
+ }
else
return NULL;
}
+AtkObject *
+atk_dbus_path_to_object (const char *path)
+{
+ return ATK_OBJECT (atk_dbus_path_to_gobject (path));
+}
+
/*
- * Used to lookup a D-Bus path from the AtkObject.
+ * TODO WARNING HACK This function is dangerous.
+ * It should only be called before sending an event on an
+ * object that has not already been registered.
*/
gchar *
-atk_dbus_object_to_path (AtkObject *accessible)
+atk_dbus_object_attempt_registration (AtkObject *accessible)
{
guint ref;
ref = object_to_ref (accessible);
if (!ref)
+ {
+ /* See if the object is attached to the main tree */
+ AtkObject *current, *prev = NULL;
+ guint cref = 0;
+
+ /* This should iterate until it hits a NULL or registered parent */
+ prev = accessible;
+ current = atk_object_get_parent (accessible);
+ if (current)
+ cref = object_to_ref (current);
+ while (current && !cref)
+ {
+ prev = current;
+ current = atk_object_get_parent (current);
+ if (current)
+ cref = object_to_ref (current);
+ }
+
+ /* A registered parent, with non-registered child, has been found */
+ if (current)
+ {
+ register_subtree (prev);
+ }
+
+ /* The object SHOULD be registered now. If it isn't - I give up */
+ ref = object_to_ref (accessible);
+ if (ref)
+ {
+ return atk_dbus_ref_to_path (ref);
+ }
+ else
+ {
+#ifdef SPI_ATK_DEBUG
+ g_debug ("AT-SPI: Could not register a non-attached accessible object");
+#endif
+ return NULL;
+ }
+ }
+ else
+ {
+ return atk_dbus_ref_to_path (ref);
+ }
+}
+
+
+/*
+ * Used to lookup a D-Bus path from the AtkObject.
+ */
+static gchar *
+atk_dbus_gobject_to_path_internal (GObject *gobj, gboolean do_register, GObject *container)
+{
+ guint ref;
+
+ ref = gobject_to_ref (gobj);
+ if (!ref && do_register)
+ {
+ register_gobject (gobj, container);
+ ref = gobject_to_ref (gobj);
+ }
+
+ if (!ref)
+ return NULL;
+ else
+ return atk_dbus_ref_to_path (ref);
+}
+
+gchar *
+atk_dbus_object_to_path (AtkObject *accessible, gboolean do_register)
+{
+ AtkObject *container = (accessible && do_register? atk_object_get_parent (accessible): NULL);
+ return atk_dbus_gobject_to_path_internal (G_OBJECT (accessible), do_register, G_OBJECT (container));
+}
+
+gchar *
+atk_dbus_sub_object_to_path (GObject *gobj, GObject *container)
+{
+ return atk_dbus_gobject_to_path_internal (gobj, TRUE, container);
+}
+
+gchar *
+atk_dbus_hyperlink_to_path (AtkHyperlink *hyperlink, AtkObject *container)
+{
+ guint ref;
+
+ ref = gobject_to_ref (G_OBJECT (hyperlink));
+ if (!ref && container)
+ {
+ register_hyperlink (hyperlink, container);
+ ref = hyperlink_to_ref (hyperlink);
+ }
+
+ if (!ref)
return NULL;
else
- return ref_to_path (ref);
+ return atk_dbus_ref_to_path (ref);
}
gchar *
/*---------------------------------------------------------------------------*/
+typedef gboolean (*TreeUpdateAction) (GSignalInvocationHint *signal_hint,
+ guint n_param_values,
+ const GValue *param_values,
+ gpointer data,
+ AtkObject *accessible);
+
/*
* Events are not evaluated for non-registered accessibles.
*
* When a parent is changed the subtree is de-registered
* if the parent is not attached to the root accessible.
*/
+/* TODO Turn this function into a macro? */
static gboolean
-tree_update_listener (GSignalInvocationHint *signal_hint,
- guint n_param_values,
- const GValue *param_values,
- gpointer data)
+tree_update_wrapper (GSignalInvocationHint *signal_hint,
+ guint n_param_values,
+ const GValue *param_values,
+ gpointer data,
+ TreeUpdateAction action)
{
AtkObject *accessible;
- AtkPropertyValues *values;
- const gchar *pname = NULL;
g_static_rec_mutex_lock (®istration_mutex);
/* Ensure that only registered accessibles
* have their signals processed.
*/
- accessible = g_value_get_object (¶m_values[0]);
+ accessible = ATK_OBJECT(g_value_get_object (¶m_values[0]));
g_return_val_if_fail (ATK_IS_OBJECT (accessible), TRUE);
if (object_to_ref (accessible))
g_debug ("AT-SPI: Tree update listener");
#endif
+ action (signal_hint, n_param_values, param_values, data, accessible);
+ recursion_check_unset ();
+ }
+
+ g_static_rec_mutex_unlock (®istration_mutex);
+
+ return TRUE;
+}
+
+static gboolean
+maybe_expire_lease (gpointer key, gpointer obj_data, gpointer iter)
+{
+ time_t secs = time (NULL) - (time_t)obj_data;
+
+ if (secs < 30)
+ return FALSE;
+ deregister_sub_accessible (key, obj_data, iter);
+ return TRUE;
+}
+
+static void
+expire_old_leases_in (gpointer key, gpointer obj_data, gpointer iter)
+{
+ g_hash_table_foreach_remove ((GHashTable *)obj_data, maybe_expire_lease, NULL);
+}
+
+static void
+expire_old_leases ()
+{
+ g_hash_table_foreach (objects_with_subrefs, expire_old_leases_in, NULL);
+}
+
+static gboolean
+tree_update_state_action (GSignalInvocationHint *signal_hint,
+ guint n_param_values,
+ const GValue *param_values,
+ gpointer data,
+ AtkObject *accessible)
+{
+ const gchar *name;
+ gboolean state;
+
+ if (n_param_values < 3)
+ {
+ g_warning ("at-spi: Not enough params in state-changed signal");
+ return TRUE;
+ }
+
+ name = g_value_get_string (param_values + 1);
+ state = g_value_get_boolean (param_values + 2);
+ if (!strcmp (name, "visible"))
+ {
+ AtkStateSet *set = atk_object_ref_state_set (accessible);
+ if (atk_state_set_contains_state (set, ATK_STATE_TRANSIENT))
+ {
+ if (state == 0)
+ {
+ g_hash_table_insert (leased_refs, accessible, (gpointer) time (NULL));
+ leased_refs_count++;
+ /* todo: Set to a high number: 5 for dbg. */
+ if (leased_refs_count > 5)
+ expire_old_leases ();
+ }
+ else
+ {
+ g_hash_table_remove (leased_refs, accessible);
+ leased_refs_count--;
+ }
+ }
+ g_object_unref (set);
+ }
+
+ update_accessible (accessible);
+ return TRUE;
+}
+
+static gboolean
+tree_update_state_listener (GSignalInvocationHint *signal_hint,
+ guint n_param_values,
+ const GValue *param_values,
+ gpointer data)
+{
+ tree_update_wrapper (signal_hint, n_param_values, param_values, data, tree_update_state_action);
+ return TRUE;
+}
+
+static gboolean
+tree_update_property_action (GSignalInvocationHint *signal_hint,
+ guint n_param_values,
+ const GValue *param_values,
+ gpointer data,
+ AtkObject *accessible)
+{
+ AtkPropertyValues *values;
+ const gchar *pname = NULL;
values = (AtkPropertyValues*) g_value_get_pointer (¶m_values[1]);
pname = values[0].property_name;
if (strcmp (pname, "accessible-name") == 0 ||
- strcmp (pname, "accessible-description") == 0)
+ strcmp (pname, "accessible-description") == 0 ||
+ strcmp (pname, "accessible-parent") == 0 ||
+ strcmp (pname, "accessible-role") == 0)
{
update_accessible (accessible);
}
/* Parent value us updated by child-add signal of parent object */
-
- recursion_check_unset ();
- }
-
- g_static_rec_mutex_unlock (®istration_mutex);
-
- return TRUE;
+ return TRUE;
}
-/*
- * Events are not evaluated for non registered accessibles.
- *
- * When the children of a registered accessible are changed
- * the subtree, rooted at the child is registered.
- */
static gboolean
-tree_update_children_listener (GSignalInvocationHint *signal_hint,
+tree_update_property_listener (GSignalInvocationHint *signal_hint,
guint n_param_values,
const GValue *param_values,
gpointer data)
{
- AtkObject *accessible;
- const gchar *detail = NULL;
- AtkObject *child;
-
- g_static_rec_mutex_lock (®istration_mutex);
-
- /* Ensure that only registered accessibles
- * have their signals processed.
- */
- accessible = g_value_get_object (¶m_values[0]);
- g_return_val_if_fail (ATK_IS_OBJECT (accessible), TRUE);
-
- if (object_to_ref (accessible))
- {
-#ifdef SPI_ATK_DEBUG
- if (recursion_check_and_set ())
- g_warning ("AT-SPI: Recursive use of registration module");
+ tree_update_wrapper (signal_hint, n_param_values, param_values, data, tree_update_property_action);
+ return TRUE;
+}
- g_debug ("AT-SPI: Tree update children listener");
-#endif
+static gboolean
+tree_update_children_action (GSignalInvocationHint *signal_hint,
+ guint n_param_values,
+ const GValue *param_values,
+ gpointer data,
+ AtkObject *accessible)
+{
+ const gchar *detail = NULL;
+ AtkObject *child;
if (signal_hint->detail)
detail = g_quark_to_string (signal_hint->detail);
register_subtree (child);
update_accessible (accessible);
}
+ return TRUE;
+}
- recursion_check_unset ();
- }
-
- g_static_rec_mutex_unlock (®istration_mutex);
-
- return TRUE;
+static gboolean
+tree_update_children_listener (GSignalInvocationHint *signal_hint,
+ guint n_param_values,
+ const GValue *param_values,
+ gpointer data)
+{
+ tree_update_wrapper (signal_hint, n_param_values, param_values, data, tree_update_children_action);
+ return TRUE;
}
+/*---------------------------------------------------------------------------*/
+
static void
spi_atk_register_toplevel_added (AtkObject *accessible,
guint index,
if (!ref2ptr)
ref2ptr = g_hash_table_new(g_direct_hash, g_direct_equal);
+ if (!objects_with_subrefs)
+ objects_with_subrefs = g_hash_table_new(g_direct_hash, g_direct_equal);
+
+ if (!leased_refs)
+ leased_refs = g_hash_table_new(g_direct_hash, g_direct_equal);
+
#ifdef SPI_ATK_DEBUG
if (g_thread_supported ())
g_message ("AT-SPI: Threads enabled");
register_subtree (root);
- atk_add_global_event_listener (tree_update_listener, "Gtk:AtkObject:property-change");
+ atk_add_global_event_listener (tree_update_property_listener, "Gtk:AtkObject:property-change");
atk_add_global_event_listener (tree_update_children_listener, "Gtk:AtkObject:children-changed");
+ atk_add_global_event_listener (tree_update_state_listener, "Gtk:AtkObject:state-change");
g_signal_connect (root,
"children-changed::add",
projects / platform / core / uifw / at-spi2-atk.git / blobdiff