2 * AT-SPI - Assistive Technology Service Provider Interface
3 * (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
5 * Copyright 2001 Sun Microsystems Inc.
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
23 /* registry.c: the main accessibility service registry implementation */
25 #undef SPI_LISTENER_DEBUG
33 #include <bonobo/bonobo-exception.h>
34 #include "../libspi/spi-private.h"
37 /* Our parent GObject type */
38 #define PARENT_TYPE SPI_LISTENER_TYPE
40 /* A pointer to our parent object class */
41 static SpiListenerClass *spi_registry_parent_class;
56 EventTypeCategory type_cat;
57 GQuark major; /* from string segment[1] */
58 GQuark minor; /* from string segment[1]+segment[2] */
59 GQuark detail; /* from string segment[3] (not concatenated) */
63 Accessibility_EventListener listener;
64 GQuark event_type_quark;
65 EventTypeCategory event_type_cat;
70 spi_listener_struct_new (Accessibility_EventListener listener, CORBA_Environment *ev)
72 SpiListenerStruct *retval = g_malloc (sizeof (SpiListenerStruct));
73 retval->listener = bonobo_object_dup_ref (listener, ev);
79 spi_listener_struct_free (SpiListenerStruct *ls, CORBA_Environment *ev)
81 bonobo_object_release_unref (ls->listener, ev);
87 desktop_add_application (SpiDesktop *desktop,
88 guint index, gpointer data)
90 BonoboObject *registry = BONOBO_OBJECT (data);
91 Accessibility_Event e;
94 e.type = g_strdup ("object:children-changed:add");
95 e.source = BONOBO_OBJREF (desktop);
98 CORBA_exception_init (&ev);
99 Accessibility_Registry_notifyEvent (BONOBO_OBJREF (registry),
101 Accessibility_Desktop_unref (e.source, &ev);
102 CORBA_exception_free (&ev);
108 desktop_remove_application (SpiDesktop *desktop,
109 guint index, gpointer data)
111 BonoboObject *registry = BONOBO_OBJECT (data);
112 Accessibility_Event e;
113 CORBA_Environment ev;
115 e.type = g_strdup ("object:children-changed:remove");
116 e.source = BONOBO_OBJREF (desktop);
119 CORBA_exception_init (&ev);
120 Accessibility_Registry_notifyEvent (BONOBO_OBJREF (registry),
122 Accessibility_Desktop_unref (e.source, &ev);
123 CORBA_exception_free (&ev);
128 spi_registry_object_finalize (GObject *object)
130 printf ("spi_registry_object_finalize called\n");
132 /* TODO: unref deviceeventcontroller, which disconnects key listener */
133 G_OBJECT_CLASS (spi_registry_parent_class)->finalize (object);
137 _get_unique_id (void)
145 * registerApplication:
146 * @application: a reference to the requesting @Application
147 * return values: void
149 * Register a new application with the accessibility broker.
153 impl_accessibility_registry_register_application (PortableServer_Servant servant,
154 const Accessibility_Application application,
155 CORBA_Environment * ev)
157 SpiRegistry *registry = SPI_REGISTRY (bonobo_object_from_servant (servant));
160 fprintf (stderr, "registering app %p\n", application);
162 spi_desktop_add_application (registry->desktop, application);
164 Accessibility_Application__set_id (application, _get_unique_id (), ev);
167 * TODO: change the implementation below to a WM-aware one;
168 * e.g. don't add all apps to the SpiDesktop
172 #ifdef USE_A_HASH_IN_FUTURE
174 compare_corba_objects (gconstpointer p1, gconstpointer p2)
176 CORBA_Environment ev;
180 fprintf (stderr, "comparing %p to %p\n",
184 retval = !CORBA_Object_is_equivalent ((CORBA_Object) p1, (CORBA_Object) p2, &ev);
190 register_with_toolkits (SpiRegistry *spi_registry_bonobo_object, EventTypeStruct *etype, CORBA_Environment *ev)
195 Accessibility_Desktop desktop;
196 Accessibility_Application app;
197 Accessibility_Registry registry;
198 registry = BONOBO_OBJREF (spi_registry_bonobo_object);
200 /* for each app in each desktop, call ...Application_registerToolkitEventListener */
202 n_desktops = Accessibility_Registry_getDesktopCount (registry, ev);
204 for (i=0; i<n_desktops; ++i)
206 desktop = Accessibility_Registry_getDesktop (registry, i, ev);
207 n_apps = Accessibility_Desktop__get_childCount (desktop, ev);
208 for (j=0; j<n_apps; ++j)
210 app = (Accessibility_Application) Accessibility_Desktop_getChildAtIndex (desktop,
213 Accessibility_Application_registerToolkitEventListener (app,
215 CORBA_string_dup (etype->event_name),
221 #ifdef USE_A_HASH_IN_FUTURE
224 compare_listener_quarks (gconstpointer p1, gconstpointer p2)
226 return (((SpiListenerStruct *)p2)->event_type_quark !=
227 ((SpiListenerStruct *)p1)->event_type_quark);
231 compare_listener_corbaref (gconstpointer p1, gconstpointer p2)
233 return compare_corba_objects (((SpiListenerStruct *)p2)->listener,
234 ((SpiListenerStruct *)p1)->listener);
239 parse_event_type (EventTypeStruct *etype, const char *event_name)
241 gchar **split_string;
244 split_string = g_strsplit (event_name, ":", 4);
245 etype->event_name = g_strdup (event_name);
247 if (!g_ascii_strncasecmp (event_name, "focus:", 6))
249 etype->type_cat = ETYPE_FOCUS;
251 else if (!g_ascii_strncasecmp (event_name, "object:", 7))
253 etype->type_cat = ETYPE_OBJECT;
255 else if (!g_ascii_strncasecmp (event_name, "window:", 7))
257 etype->type_cat = ETYPE_WINDOW;
261 etype->type_cat = ETYPE_TOOLKIT;
266 etype->major = g_quark_from_string (split_string[1]);
269 etype->minor = g_quark_from_string (s = g_strconcat (split_string[1], split_string[2], NULL));
273 etype->detail = g_quark_from_string (split_string[3]);
277 etype->detail = g_quark_from_static_string ("");
282 etype->minor = etype->major;
283 etype->detail = g_quark_from_static_string (""); //etype->major;
288 etype->major = g_quark_from_static_string ("");
289 etype->minor = etype->major;
290 etype->detail = etype->major;
293 g_strfreev (split_string);
297 * deregisterApplication:
298 * @application: a reference to the @Application
299 * to be deregistered.
300 * return values: void
302 * De-register an application previously registered with the broker.
306 impl_accessibility_registry_deregister_application (PortableServer_Servant servant,
307 const Accessibility_Application application,
308 CORBA_Environment * ev)
310 SpiRegistry *registry = SPI_REGISTRY (bonobo_object_from_servant (servant));
312 spi_desktop_remove_application (registry->desktop, application);
315 fprintf (stderr, "de-registered app %p\n", application);
320 get_listener_list (SpiRegistry *registry,
321 EventTypeCategory cat)
330 ret = ®istry->object_listeners;
333 ret = ®istry->window_listeners;
336 ret = ®istry->toolkit_listeners;
347 * CORBA Accessibility::Registry::registerGlobalEventListener method implementation
350 impl_accessibility_registry_register_global_event_listener (
351 PortableServer_Servant servant,
352 Accessibility_EventListener listener,
353 const CORBA_char *event_name,
354 CORBA_Environment *ev)
356 SpiRegistry *registry = SPI_REGISTRY (bonobo_object_from_servant (servant));
357 SpiListenerStruct *ls = spi_listener_struct_new (listener, ev);
358 EventTypeStruct etype;
361 #ifdef SPI_LISTENER_DEBUG
362 fprintf (stderr, "registering");
363 fprintf (stderr, "registering for events of type %s\n", event_name);
366 /* parse, check major event type and add listener accordingly */
367 parse_event_type (&etype, event_name);
368 ls->event_type_quark = etype.minor;
369 ls->event_type_cat = etype.type_cat;
371 list = get_listener_list (registry, etype.type_cat);
375 *list = g_list_prepend (*list, ls);
377 if (etype.type_cat == ETYPE_TOOLKIT)
379 register_with_toolkits (registry, &etype, ev);
384 spi_listener_struct_free (ls, ev);
388 static SpiReEntrantContinue
389 remove_listener_cb (GList * const *list, gpointer user_data)
391 SpiListenerStruct *ls = (SpiListenerStruct *) (*list)->data;
392 CORBA_Environment ev;
393 Accessibility_EventListener listener = user_data;
395 CORBA_exception_init (&ev);
397 if (CORBA_Object_is_equivalent (ls->listener, listener, &ev))
399 spi_re_entrant_list_delete_link (list);
400 spi_listener_struct_free (ls, &ev);
403 CORBA_exception_free (&ev);
405 return SPI_RE_ENTRANT_CONTINUE;
409 * CORBA Accessibility::Registry::deregisterGlobalEventListenerAll method implementation
412 impl_accessibility_registry_deregister_global_event_listener_all (
413 PortableServer_Servant servant,
414 Accessibility_EventListener listener,
415 CORBA_Environment *ev)
419 SpiRegistry *registry = SPI_REGISTRY (bonobo_object_from_servant (servant));
421 lists[0] = ®istry->object_listeners;
422 lists[1] = ®istry->window_listeners;
423 lists[2] = ®istry->toolkit_listeners;
425 for (i = 0; i < sizeof (lists) / sizeof (lists[0]); i++)
427 spi_re_entrant_list_foreach (lists [i], remove_listener_cb, listener);
433 * CORBA Accessibility::Registry::deregisterGlobalEventListener method implementation
436 impl_accessibility_registry_deregister_global_event_listener (
437 PortableServer_Servant servant,
438 Accessibility_EventListener listener,
439 const CORBA_char *event_name,
440 CORBA_Environment *ev)
442 SpiRegistry *registry;
443 EventTypeStruct etype;
445 registry = SPI_REGISTRY (bonobo_object_from_servant (servant));
447 parse_event_type (&etype, (char *) event_name);
449 spi_re_entrant_list_foreach (get_listener_list (registry, etype.type_cat),
450 remove_listener_cb, listener);
456 * return values: a short integer indicating the current number of
459 * Get the current number of desktops.
463 impl_accessibility_registry_get_desktop_count (PortableServer_Servant servant,
464 CORBA_Environment * ev)
466 /* TODO: implement support for multiple virtual desktops */
467 CORBA_short n_desktops;
468 n_desktops = (CORBA_short) 1;
475 * @n: the index of the requested @Desktop.
476 * return values: a reference to the requested @Desktop.
478 * Get the nth accessible desktop.
481 static Accessibility_Desktop
482 impl_accessibility_registry_get_desktop (PortableServer_Servant servant,
484 CORBA_Environment * ev)
486 SpiRegistry *registry = SPI_REGISTRY (bonobo_object_from_servant (servant));
488 /* TODO: implement support for multiple virtual desktops */
491 return (Accessibility_Desktop)
492 bonobo_object_dup_ref (BONOBO_OBJREF (registry->desktop), ev);
496 return (Accessibility_Desktop) CORBA_OBJECT_NIL;
503 * return values: a sequence containing references to
506 * Get a list of accessible desktops.
509 static Accessibility_DesktopSeq *
510 impl_accessibility_registry_get_desktop_list (PortableServer_Servant servant,
511 CORBA_Environment * ev)
513 SpiRegistry *registry = SPI_REGISTRY (bonobo_object_from_servant (servant));
514 Accessibility_DesktopSeq *desktops;
516 desktops = Accessibility_DesktopSeq__alloc ();
517 desktops->_length = desktops->_maximum = 1;
518 desktops->_buffer = Accessibility_DesktopSeq_allocbuf (desktops->_length);
519 desktops->_buffer [0] = bonobo_object_dup_ref (BONOBO_OBJREF (registry->desktop), ev);
525 static Accessibility_DeviceEventController
526 impl_accessibility_registry_get_device_event_controller (PortableServer_Servant servant,
527 CORBA_Environment *ev)
529 SpiRegistry *registry = SPI_REGISTRY (bonobo_object_from_servant (servant));
531 if (!registry->de_controller)
533 registry->de_controller = spi_device_event_controller_new (registry);
536 return bonobo_object_dup_ref (BONOBO_OBJREF (registry->de_controller), ev);
540 CORBA_Environment *ev;
541 Bonobo_Unknown source;
542 EventTypeStruct etype;
543 Accessibility_Event e_out;
546 static SpiReEntrantContinue
547 notify_listeners_cb (GList * const *list, gpointer user_data)
549 SpiListenerStruct *ls;
550 NotifyContext *ctx = user_data;
557 #ifdef SPI_LISTENER_DEBUG
558 fprintf (stderr, "event quarks: %lx %lx %lx\n", ls->event_type_quark, ctx->etype.major, ctx->etype.minor);
559 fprintf (stderr, "event name: %s\n", ctx->etype.event_name);
562 if ((ls->event_type_quark == ctx->etype.major) ||
563 (ls->event_type_quark == ctx->etype.minor))
566 fprintf (stderr, "notifying listener %d\n", 0);
567 /* g_list_index (list, l->data)); */
568 s = Accessibility_Accessible__get_name (ctx->source, ctx->ev);
569 fprintf (stderr, "event source name %s\n", s);
573 ctx->e_out.source = CORBA_Object_duplicate (ctx->source, ctx->ev);
575 if (BONOBO_EX (ctx->ev))
577 return SPI_RE_ENTRANT_CONTINUE;;
580 if ((*list) && (*list)->data == ls)
582 Accessibility_EventListener_notifyEvent (
583 (Accessibility_EventListener) ls->listener, &ctx->e_out, ctx->ev);
584 if (ctx->ev->_major != CORBA_NO_EXCEPTION)
586 g_warning ("Accessibility app error: exception during "
587 "event notification: %s\n",
588 CORBA_exception_id (ctx->ev));
591 else /* dup re-entered */
593 CORBA_Object_release (ctx->e_out.source, ctx->ev);
597 return SPI_RE_ENTRANT_CONTINUE;
601 impl_registry_notify_event (PortableServer_Servant servant,
602 const Accessibility_Event *e,
603 CORBA_Environment *ev)
605 SpiRegistry *registry;
609 registry = SPI_REGISTRY (bonobo_object_from_servant (servant));
611 parse_event_type (&ctx.etype, e->type);
613 list = get_listener_list (registry, ctx.etype.type_cat);
619 ctx.source = e->source;
620 parse_event_type (&ctx.etype, e->type);
622 spi_re_entrant_list_foreach (list, notify_listeners_cb, &ctx);
629 spi_registry_class_init (SpiRegistryClass *klass)
631 GObjectClass * object_class = (GObjectClass *) klass;
632 POA_Accessibility_Registry__epv *epv = &klass->epv;
634 spi_registry_parent_class = g_type_class_ref (SPI_LISTENER_TYPE);
636 object_class->finalize = spi_registry_object_finalize;
638 klass->parent_class.epv.notifyEvent = impl_registry_notify_event;
640 epv->registerApplication = impl_accessibility_registry_register_application;
641 epv->deregisterApplication = impl_accessibility_registry_deregister_application;
642 epv->registerGlobalEventListener = impl_accessibility_registry_register_global_event_listener;
643 epv->deregisterGlobalEventListener = impl_accessibility_registry_deregister_global_event_listener;
644 epv->deregisterGlobalEventListenerAll = impl_accessibility_registry_deregister_global_event_listener_all;
645 epv->getDeviceEventController = impl_accessibility_registry_get_device_event_controller;
646 epv->getDesktopCount = impl_accessibility_registry_get_desktop_count;
647 epv->getDesktop = impl_accessibility_registry_get_desktop;
648 epv->getDesktopList = impl_accessibility_registry_get_desktop_list;
652 spi_registry_init (SpiRegistry *registry)
654 registry->object_listeners = NULL;
655 registry->window_listeners = NULL;
656 registry->toolkit_listeners = NULL;
657 registry->desktop = spi_desktop_new ();
658 /* Register callback notification for application addition and removal */
659 g_signal_connect (G_OBJECT (registry->desktop),
661 G_CALLBACK (desktop_add_application),
664 g_signal_connect (G_OBJECT (registry->desktop),
665 "application_removed",
666 G_CALLBACK (desktop_remove_application),
669 registry->de_controller = NULL;
672 BONOBO_TYPE_FUNC_FULL (SpiRegistry,
673 Accessibility_Registry,
678 spi_registry_new (void)
680 SpiRegistry *retval = g_object_new (SPI_REGISTRY_TYPE, NULL);
681 bonobo_object_set_immortal (BONOBO_OBJECT (retval), TRUE);