* AT-SPI - Assistive Technology Service Provider Interface
* (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
*
- * Copyright 2001 Sun Microsystems Inc.
+ * Copyright 2001, 2002 Sun Microsystems Inc.,
+ * Copyright 2001, 2002 Ximian, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
#undef SPI_LISTENER_DEBUG
#undef SPI_DEBUG
+#undef SPI_QUEUE_DEBUG
#include <config.h>
#ifdef SPI_DEBUG
/* A pointer to our parent object class */
static SpiListenerClass *spi_registry_parent_class;
+static GQuark _deactivate_quark = 0;
+static GQuark _activate_quark = 0;
+static GQuark _state_quark = 0;
+static GQuark _state_changed_focused_quark = 0;
+
+int _dbg = 0;
+
typedef enum {
ETYPE_FOCUS,
ETYPE_OBJECT,
} EventTypeCategory;
typedef struct {
- char *event_name;
+ const char *event_name;
EventTypeCategory type_cat;
GQuark major; /* from string segment[1] */
GQuark minor; /* from string segment[1]+segment[2] */
EventTypeCategory event_type_cat;
} SpiListenerStruct;
+static void
+spi_registry_set_debug (const char *debug_flag_string)
+{
+ if (debug_flag_string)
+ _dbg = (int) g_ascii_strtod (debug_flag_string, NULL);
+}
+
SpiListenerStruct *
spi_listener_struct_new (Accessibility_EventListener listener, CORBA_Environment *ev)
{
BonoboObject *registry = BONOBO_OBJECT (data);
Accessibility_Event e;
CORBA_Environment ev;
+ Accessibility_Accessible a;
- e.type = g_strdup ("object:children-changed:add");
+ CORBA_exception_init (&ev);
+ e.type = "object:children-changed:add";
e.source = BONOBO_OBJREF (desktop);
e.detail1 = index;
e.detail2 = 0;
- CORBA_exception_init (&ev);
+ a = Accessibility_Accessible_getChildAtIndex (BONOBO_OBJREF (desktop),
+ index, &ev);
+ /* FIXME
+ spi_init_any_object (&e.any_data, a);
+ */
+ spi_init_any_nil (&e.any_data);
Accessibility_Registry_notifyEvent (BONOBO_OBJREF (registry),
&e, &ev);
- Accessibility_Desktop_unref (e.source, &ev);
+ bonobo_object_release_unref (a, &ev);
CORBA_exception_free (&ev);
}
{
BonoboObject *registry = BONOBO_OBJECT (data);
Accessibility_Event e;
+ Accessibility_Accessible a;
CORBA_Environment ev;
- e.type = g_strdup ("object:children-changed:remove");
+ CORBA_exception_init (&ev);
+
+ e.type = "object:children-changed:remove";
e.source = BONOBO_OBJREF (desktop);
e.detail1 = index;
e.detail2 = 0;
- CORBA_exception_init (&ev);
+ a = Accessibility_Accessible_getChildAtIndex (BONOBO_OBJREF (desktop),
+ index, &ev);
+ /* FIXME
+ spi_init_any_object (&e.any_data, a);
+ */
+ spi_init_any_nil (&e.any_data);
+ Accessibility_Accessible_unref (a, &ev);
Accessibility_Registry_notifyEvent (BONOBO_OBJREF (registry),
&e, &ev);
Accessibility_Desktop_unref (e.source, &ev);
static void
spi_registry_object_finalize (GObject *object)
{
- printf ("spi_registry_object_finalize called\n");
+ DBG (1, g_warning ("spi_registry_object_finalize called\n"));
+ g_object_unref (SPI_REGISTRY (object)->de_controller);
- /* TODO: unref deviceeventcontroller, which disconnects key listener */
G_OBJECT_CLASS (spi_registry_parent_class)->finalize (object);
}
gchar *s;
split_string = g_strsplit (event_name, ":", 4);
- etype->event_name = g_strdup (event_name);
+ etype->event_name = event_name;
if (!g_ascii_strncasecmp (event_name, "focus:", 6))
{
{
etype->type_cat = ETYPE_WINDOW;
}
+ else if (!g_ascii_strncasecmp (event_name, "keyboard:", 9))
+ {
+ etype->type_cat = ETYPE_KEYBOARD;
+ }
else
{
etype->type_cat = ETYPE_TOOLKIT;
case ETYPE_OBJECT:
case ETYPE_PROPERTY:
case ETYPE_FOCUS:
+ case ETYPE_KEYBOARD:
ret = ®istry->object_listeners;
break;
case ETYPE_WINDOW:
case ETYPE_TOOLKIT:
ret = ®istry->toolkit_listeners;
break;
- case ETYPE_KEYBOARD:
default:
ret = NULL;
break;
GList **list;
#ifdef SPI_LISTENER_DEBUG
- fprintf (stderr, "registering");
fprintf (stderr, "registering for events of type %s\n", event_name);
#endif
CORBA_Environment *ev)
{
int i;
- GList **lists[2];
+ GList **lists[3];
SpiRegistry *registry = SPI_REGISTRY (bonobo_object_from_servant (servant));
lists[0] = ®istry->object_listeners;
{
SpiListenerStruct *ls;
NotifyContext *ctx = user_data;
-#ifdef SPI_DEBUG
- CORBA_string s;
-#endif
ls = (*list)->data;
fprintf (stderr, "event quarks: %lx %lx %lx\n", ls->event_type_quark, ctx->etype.major, ctx->etype.minor);
fprintf (stderr, "event name: %s\n", ctx->etype.event_name);
#endif
-
if ((ls->event_type_quark == ctx->etype.major) ||
(ls->event_type_quark == ctx->etype.minor))
{
#ifdef SPI_DEBUG
+ CORBA_string s;
fprintf (stderr, "notifying listener %d\n", 0);
/* g_list_index (list, l->data)); */
s = Accessibility_Accessible__get_name (ctx->source, ctx->ev);
fprintf (stderr, "event source name %s\n", s);
CORBA_free (s);
-#endif
-
- ctx->e_out.source = CORBA_Object_duplicate (ctx->source, ctx->ev);
-
if (BONOBO_EX (ctx->ev))
{
- return SPI_RE_ENTRANT_CONTINUE;;
+ CORBA_exception_free (ctx->ev);
+ return SPI_RE_ENTRANT_CONTINUE;
}
+#endif
+
+ ctx->e_out.source = ctx->source;
if ((*list) && (*list)->data == ls)
{
(Accessibility_EventListener) ls->listener, &ctx->e_out, ctx->ev);
if (ctx->ev->_major != CORBA_NO_EXCEPTION)
{
- g_warning ("Accessibility app error: exception during "
+ DBG (1, g_warning ("Accessibility app error: exception during "
"event notification: %s\n",
- CORBA_exception_id (ctx->ev));
- if (ctx->ev->_major == CORBA_SYSTEM_EXCEPTION)
- CORBA_exception_init (ctx->ev);
- /* clear system exception on notify, it means listener is dead but
- * that's no concern of the event source :-) */
+ CORBA_exception_id (ctx->ev)));
+ CORBA_exception_free (ctx->ev);
+ /* FIXME: check that this item is removed from the list
+ * on system exception by a 'broken' listener */
}
}
- else /* dup re-entered */
- {
- CORBA_Object_release (ctx->e_out.source, ctx->ev);
- }
}
return SPI_RE_ENTRANT_CONTINUE;
}
static void
+registry_emit_event (SpiRegistry *registry, NotifyContext *ctx)
+{
+ GList **list = get_listener_list (registry, ctx->etype.type_cat);
+
+ if (list && *list)
+ {
+
+ spi_re_entrant_list_foreach (list, notify_listeners_cb, ctx);
+ }
+}
+
+static NotifyContext*
+registry_clone_notify_context (NotifyContext *ctx)
+{
+ NotifyContext *new_ctx = g_new0 (NotifyContext, 1);
+
+ new_ctx->ev = NULL;
+ new_ctx->source = bonobo_object_dup_ref (ctx->source, NULL);
+ new_ctx->etype.event_name = CORBA_string_dup (ctx->etype.event_name);
+ new_ctx->etype.type_cat = ctx->etype.type_cat;
+ new_ctx->etype.major = ctx->etype.major;
+ new_ctx->etype.minor = ctx->etype.minor;
+ new_ctx->etype.detail = ctx->etype.detail;
+ new_ctx->e_out.type = CORBA_string_dup (ctx->e_out.type);
+ new_ctx->e_out.source = ctx->e_out.source;
+ new_ctx->e_out.detail1 = ctx->e_out.detail1;
+ new_ctx->e_out.detail2 = ctx->e_out.detail2;
+ CORBA_any__copy (&(new_ctx->e_out.any_data), &(ctx->e_out.any_data));
+ return new_ctx;
+}
+
+static void
+registry_flush_event_queue (SpiRegistry *registry,
+ gboolean discard,
+ CORBA_Environment *ev)
+{
+ NotifyContext *q_ctx;
+ while (!g_queue_is_empty (registry->deferred_event_queue)) {
+ q_ctx = g_queue_pop_tail (registry->deferred_event_queue);
+#ifdef SPI_QUEUE_DEBUG
+ fprintf (stderr, "%s! %s [n=%d] %p\n", (discard ? "discard" : "pop"),
+ q_ctx->etype.event_name,
+ (int) registry->deferred_event_queue->length, q_ctx);
+#endif
+ if (!discard) {
+ q_ctx->ev = ev;
+ registry_emit_event (registry, q_ctx);
+ }
+ if (discard &&
+ (q_ctx->etype.type_cat == ETYPE_OBJECT) &&
+ (q_ctx->etype.major == _state_quark) &&
+ (q_ctx->etype.minor == _state_changed_focused_quark)) {
+ registry->focus_object = q_ctx->source;
+#ifdef SPI_QUEUE_DEBUG
+ fprintf (stderr, "discard!: set focus_object %p\n", registry->focus_object);
+#endif
+ }
+ else {
+ bonobo_object_release_unref (q_ctx->source, NULL);
+ }
+ CORBA_free ((void *)q_ctx->etype.event_name);
+ CORBA_free ((void *)q_ctx->e_out.type);
+ g_free (q_ctx);
+ }
+ registry->is_queueing = FALSE;
+}
+
+static gboolean
+registry_timeout_flush_queue (gpointer data)
+{
+ SpiRegistry *registry = data;
+ CORBA_Environment ev;
+#ifdef SPI_QUEUE_DEBUG
+ fprintf (stderr, "timeout! flushing queue...\n");
+#endif
+ CORBA_exception_init (&ev);
+ registry->queue_handler_id = 0;
+ registry_flush_event_queue (registry, FALSE, &ev);
+ return FALSE;
+}
+
+static gboolean
+registry_discard_on_event (SpiRegistry *registry, NotifyContext *ctx)
+{
+ gboolean retval = FALSE;
+ NotifyContext *q_ctx = g_queue_peek_tail (registry->deferred_event_queue);
+ if ((q_ctx != NULL) &&
+ (ctx->etype.type_cat == ETYPE_WINDOW) &&
+ (ctx->etype.major == _activate_quark)) {
+ if (CORBA_Object_is_equivalent (ctx->source, q_ctx->source, NULL)) {
+ retval = TRUE;
+ }
+ }
+ return retval;
+}
+
+static gboolean
+registry_reset_on_event (SpiRegistry *registry, NotifyContext *ctx)
+{
+ return (ctx->etype.type_cat == ETYPE_WINDOW) ? TRUE : FALSE;
+}
+
+#ifdef SPI_QUEUE_DEBUG
+#include <sys/time.h>
+#endif
+
+static void
+registry_start_queue (SpiRegistry *registry)
+{
+#ifdef SPI_QUEUE_DEBUG
+ struct timeval tp;
+ gettimeofday (&tp, NULL);
+ fprintf (stderr, "start queueing at %i.%.6i\n", tp.tv_sec, tp.tv_usec);
+#endif
+ if (registry->queue_handler_id != 0)
+ g_source_remove (registry->queue_handler_id);
+
+ if (registry->focus_object)
+ {
+#ifdef SPI_QUEUE_DEBUG
+ fprintf (stderr, "registry_start_queue: release focus_object %p\n", registry->focus_object);
+#endif
+ bonobo_object_release_unref (registry->focus_object, NULL);
+ registry->focus_object = NULL;
+ }
+ registry->queue_handler_id = g_timeout_add_full (G_PRIORITY_HIGH_IDLE,
+ registry->exit_notify_timeout,
+ registry_timeout_flush_queue, registry,
+ NULL);
+ registry->is_queueing = TRUE;
+}
+
+static gboolean
+registry_discard_event (SpiRegistry *registry, NotifyContext *ctx)
+{
+ gboolean ret = FALSE;
+
+ if (ctx->etype.type_cat == ETYPE_FOCUS)
+ {
+ if (registry->focus_object)
+ {
+ if (CORBA_Object_is_equivalent (registry->focus_object, ctx->source, NULL))
+ {
+ ret = TRUE;
+ }
+#ifdef SPI_QUEUE_DEBUG
+ fprintf (stderr, "registry_discard_event: release focus_object %p\n", registry->focus_object);
+#endif
+ bonobo_object_release_unref (registry->focus_object, NULL);
+ registry->focus_object = NULL;
+ }
+ }
+ return ret;
+}
+
+static gboolean
+registry_defer_on_event (SpiRegistry *registry, NotifyContext *ctx)
+{
+ gboolean defer = FALSE;
+ if ((ctx->etype.type_cat == ETYPE_WINDOW) &&
+ (ctx->etype.major == _deactivate_quark)) {
+ defer = TRUE;
+ registry_start_queue (registry);
+ }
+ /* defer all object:state-change events after a window:deactivate */
+ else if ((ctx->etype.type_cat == ETYPE_FOCUS) ||
+ ((ctx->etype.type_cat == ETYPE_OBJECT) &&
+ (ctx->etype.major == _state_quark))) {
+ defer = TRUE;
+ }
+ return defer;
+}
+
+static gboolean
+registry_queue_event (SpiRegistry *registry, NotifyContext *ctx)
+{
+ NotifyContext *q_ctx = registry_clone_notify_context (ctx);
+#ifdef SPI_QUEUE_DEBUG
+ if (q_ctx->etype.type_cat != ETYPE_MOUSE)
+ fprintf (stderr, "push! %s %p\n", q_ctx->etype.event_name, q_ctx);
+#endif
+ if (registry->is_queueing)
+ {
+ g_queue_push_head (registry->deferred_event_queue, q_ctx);
+
+ return FALSE;
+ }
+ else
+ {
+ bonobo_object_release_unref (q_ctx->source, NULL);
+ CORBA_free ((void *)q_ctx->etype.event_name);
+ CORBA_free ((void *)q_ctx->e_out.type);
+ g_free (q_ctx);
+ return TRUE;
+ }
+}
+
+/**
+ * Dispose of event in one of several ways:
+ * 1) discard;
+ * 2) initiate queuing and push onto queue (below)
+ * 3) push on existing queue to either pop on timeout or on subsequent event
+ * 4) pass-through immediately
+ * 5) pass-through, discarding queued events
+ * 6) emit queued events and then pass through
+ **/
+static gboolean
+registry_filter_event (SpiRegistry *registry, NotifyContext *ctx,
+ CORBA_Environment *ev)
+{
+ g_assert (ctx != NULL);
+
+ if (registry_discard_event (registry, ctx))
+ return FALSE;
+
+ if (registry_defer_on_event (registry, ctx)) { /* #2, #3 */
+ if (registry->is_queueing) {
+ return registry_queue_event (registry, ctx);
+ }
+ else { /* #4a */
+ return TRUE;
+ }
+ }
+ else if (registry_reset_on_event (registry, ctx)) { /* #5, #6 */
+ gboolean discard = registry_discard_on_event (registry, ctx);
+#ifdef SPI_QUEUE_DEBUG
+ fprintf (stderr, "event %s caused reset, discard=%d\n",
+ ctx->etype.event_name, (int) discard);
+ {
+ struct timeval tp;
+ gettimeofday (&tp, NULL);
+ fprintf (stderr, "event at %i.%.6i\n", tp.tv_sec, tp.tv_usec);
+ }
+#endif
+ registry_flush_event_queue (registry, discard, ev);
+ return (discard ? FALSE : TRUE);
+ }
+ else { /* #4b */
+ return TRUE;
+ }
+}
+
+static void
impl_registry_notify_event (PortableServer_Servant servant,
const Accessibility_Event *e,
CORBA_Environment *ev)
{
SpiRegistry *registry;
- GList **list;
NotifyContext ctx;
+ static int level = 0;
+ level++;
registry = SPI_REGISTRY (bonobo_object_from_servant (servant));
parse_event_type (&ctx.etype, e->type);
- list = get_listener_list (registry, ctx.etype.type_cat);
-
- if (list)
- {
- ctx.ev = ev;
- ctx.e_out = *e;
- ctx.source = e->source;
- parse_event_type (&ctx.etype, e->type);
-
- spi_re_entrant_list_foreach (list, notify_listeners_cb, &ctx);
- }
-
+ ctx.ev = ev;
+ ctx.e_out = *e;
+ ctx.source = e->source;
+
+#ifdef SPI_QUEUE_DEBUG
+ if (ctx.etype.type_cat != ETYPE_MOUSE)
+ fprintf (stderr, "filter! %s level: %d\n", ctx.etype.event_name, level);
+#endif
+ if (registry_filter_event (registry, &ctx, ev)) {
+#ifdef SPI_QUEUE_DEBUG
+ if (ctx.etype.type_cat != ETYPE_MOUSE)
+ fprintf (stderr, "emit! %s level: %d\n", ctx.etype.event_name, level);
+#endif
+ registry_emit_event (registry, &ctx);
+ }
+ level--;
}
-
static void
spi_registry_class_init (SpiRegistryClass *klass)
{
epv->getDesktopCount = impl_accessibility_registry_get_desktop_count;
epv->getDesktop = impl_accessibility_registry_get_desktop;
epv->getDesktopList = impl_accessibility_registry_get_desktop_list;
+ _deactivate_quark = g_quark_from_static_string ("deactivate");
+ _activate_quark = g_quark_from_static_string ("activate");
+ _state_quark = g_quark_from_static_string ("state-changed");
+ _state_changed_focused_quark = g_quark_from_static_string ("state-changedfocused");
}
static void
spi_registry_init (SpiRegistry *registry)
{
+ spi_registry_set_debug (g_getenv ("AT_SPI_DEBUG"));
+ /*
+ * TODO: FIXME, this module makes the foolish assumptions that
+ * registryd uses the same display as the apps, and that the
+ * DISPLAY environment variable is set.
+ */
+ gdk_init (NULL, NULL);
+
registry->object_listeners = NULL;
registry->window_listeners = NULL;
registry->toolkit_listeners = NULL;
+ registry->deferred_event_queue = g_queue_new ();
+ registry->exit_notify_timeout = 200;
+ registry->queue_handler_id = 0;
+ /*
+ * The focus_object is set when a state-change:focused event is discarded
+ * after a window:deactivate event is received because a window:activate
+ * event has been received for the same window within the timeout period.
+ * The focus object is used to suppress a focus event for that object.
+ * It is released when a window:deactivate event is received.
+ */
+ registry->focus_object = NULL;
registry->desktop = spi_desktop_new ();
/* Register callback notification for application addition and removal */
g_signal_connect (G_OBJECT (registry->desktop),
BONOBO_TYPE_FUNC_FULL (SpiRegistry,
Accessibility_Registry,
PARENT_TYPE,
- spi_registry);
+ spi_registry)
SpiRegistry *
spi_registry_new (void)
projects / platform / core / uifw / at-spi2-atk.git / blobdiff