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 CORBA_exception_free (&ev);
107 desktop_remove_application (SpiDesktop *desktop,
108 guint index, gpointer data)
110 BonoboObject *registry = BONOBO_OBJECT (data);
111 Accessibility_Event e;
112 CORBA_Environment ev;
114 e.type = g_strdup ("object:children-changed:remove");
115 e.source = BONOBO_OBJREF (desktop);
118 CORBA_exception_init (&ev);
119 Accessibility_Registry_notifyEvent (BONOBO_OBJREF (registry),
121 CORBA_exception_free (&ev);
127 spi_registry_object_finalize (GObject *object)
129 printf ("spi_registry_object_finalize called\n");
131 /* TODO: unref deviceeventcontroller, which disconnects key listener */
132 G_OBJECT_CLASS (spi_registry_parent_class)->finalize (object);
136 _get_unique_id (void)
144 * registerApplication:
145 * @application: a reference to the requesting @Application
146 * return values: void
148 * Register a new application with the accessibility broker.
152 impl_accessibility_registry_register_application (PortableServer_Servant servant,
153 const Accessibility_Application application,
154 CORBA_Environment * ev)
156 SpiRegistry *registry = SPI_REGISTRY (bonobo_object_from_servant (servant));
159 fprintf (stderr, "registering app %p\n", application);
161 spi_desktop_add_application (registry->desktop, application);
163 Accessibility_Application__set_id (application, _get_unique_id (), ev);
166 * TODO: change the implementation below to a WM-aware one;
167 * e.g. don't add all apps to the SpiDesktop
171 #ifdef USE_A_HASH_IN_FUTURE
173 compare_corba_objects (gconstpointer p1, gconstpointer p2)
175 CORBA_Environment ev;
179 fprintf (stderr, "comparing %p to %p\n",
183 retval = !CORBA_Object_is_equivalent ((CORBA_Object) p1, (CORBA_Object) p2, &ev);
189 register_with_toolkits (SpiRegistry *spi_registry_bonobo_object, EventTypeStruct *etype, CORBA_Environment *ev)
194 Accessibility_Desktop desktop;
195 Accessibility_Application app;
196 Accessibility_Registry registry;
197 registry = BONOBO_OBJREF (spi_registry_bonobo_object);
199 /* for each app in each desktop, call ...Application_registerToolkitEventListener */
201 n_desktops = Accessibility_Registry_getDesktopCount (registry, ev);
203 for (i=0; i<n_desktops; ++i)
205 desktop = Accessibility_Registry_getDesktop (registry, i, ev);
206 n_apps = Accessibility_Desktop__get_childCount (desktop, ev);
207 for (j=0; j<n_apps; ++j)
209 app = (Accessibility_Application) Accessibility_Desktop_getChildAtIndex (desktop,
212 Accessibility_Application_registerToolkitEventListener (app,
214 CORBA_string_dup (etype->event_name),
220 #ifdef USE_A_HASH_IN_FUTURE
223 compare_listener_quarks (gconstpointer p1, gconstpointer p2)
225 return (((SpiListenerStruct *)p2)->event_type_quark !=
226 ((SpiListenerStruct *)p1)->event_type_quark);
230 compare_listener_corbaref (gconstpointer p1, gconstpointer p2)
232 return compare_corba_objects (((SpiListenerStruct *)p2)->listener,
233 ((SpiListenerStruct *)p1)->listener);
238 parse_event_type (EventTypeStruct *etype, const char *event_name)
240 gchar **split_string;
243 split_string = g_strsplit (event_name, ":", 4);
244 etype->event_name = g_strdup (event_name);
246 if (!g_ascii_strncasecmp (event_name, "focus:", 6))
248 etype->type_cat = ETYPE_FOCUS;
250 else if (!g_ascii_strncasecmp (event_name, "object:", 7))
252 etype->type_cat = ETYPE_OBJECT;
254 else if (!g_ascii_strncasecmp (event_name, "window:", 7))
256 etype->type_cat = ETYPE_WINDOW;
260 etype->type_cat = ETYPE_TOOLKIT;
265 etype->major = g_quark_from_string (split_string[1]);
268 etype->minor = g_quark_from_string (s = g_strconcat (split_string[1], split_string[2], NULL));
272 etype->detail = g_quark_from_string (split_string[3]);
276 etype->detail = g_quark_from_static_string ("");
281 etype->minor = etype->major;
282 etype->detail = g_quark_from_static_string (""); //etype->major;
287 etype->major = g_quark_from_static_string ("");
288 etype->minor = etype->major;
289 etype->detail = etype->major;
292 g_strfreev (split_string);
296 * deregisterApplication:
297 * @application: a reference to the @Application
298 * to be deregistered.
299 * return values: void
301 * De-register an application previously registered with the broker.
305 impl_accessibility_registry_deregister_application (PortableServer_Servant servant,
306 const Accessibility_Application application,
307 CORBA_Environment * ev)
309 SpiRegistry *registry = SPI_REGISTRY (bonobo_object_from_servant (servant));
311 spi_desktop_remove_application (registry->desktop, application);
314 fprintf (stderr, "de-registered app %p\n", application);
319 get_listener_list (SpiRegistry *registry,
320 EventTypeCategory cat)
329 ret = ®istry->object_listeners;
332 ret = ®istry->window_listeners;
335 ret = ®istry->toolkit_listeners;
346 * CORBA Accessibility::Registry::registerGlobalEventListener method implementation
349 impl_accessibility_registry_register_global_event_listener (
350 PortableServer_Servant servant,
351 Accessibility_EventListener listener,
352 const CORBA_char *event_name,
353 CORBA_Environment *ev)
355 SpiRegistry *registry = SPI_REGISTRY (bonobo_object_from_servant (servant));
356 SpiListenerStruct *ls = spi_listener_struct_new (listener, ev);
357 EventTypeStruct etype;
361 fprintf (stderr, "registering");
362 fprintf (stderr, "registering for events of type %s\n", event_name);
365 /* parse, check major event type and add listener accordingly */
366 parse_event_type (&etype, event_name);
367 ls->event_type_quark = etype.major;
368 ls->event_type_cat = etype.type_cat;
370 list = get_listener_list (registry, etype.type_cat);
374 *list = g_list_prepend (*list, ls);
376 if (etype.type_cat == ETYPE_TOOLKIT)
378 register_with_toolkits (registry, &etype, ev);
383 spi_listener_struct_free (ls, ev);
387 static SpiReEntrantContinue
388 remove_listener_cb (GList * const *list, gpointer user_data)
390 SpiListenerStruct *ls = (SpiListenerStruct *) (*list)->data;
391 CORBA_Environment ev;
392 Accessibility_EventListener listener = user_data;
394 CORBA_exception_init (&ev);
396 if (CORBA_Object_is_equivalent (ls->listener, listener, &ev))
398 spi_re_entrant_list_delete_link (list);
399 spi_listener_struct_free (ls, &ev);
402 CORBA_exception_free (&ev);
404 return SPI_RE_ENTRANT_CONTINUE;
408 * CORBA Accessibility::Registry::deregisterGlobalEventListenerAll method implementation
411 impl_accessibility_registry_deregister_global_event_listener_all (
412 PortableServer_Servant servant,
413 Accessibility_EventListener listener,
414 CORBA_Environment *ev)
418 SpiRegistry *registry = SPI_REGISTRY (bonobo_object_from_servant (servant));
420 lists[0] = ®istry->object_listeners;
421 lists[1] = ®istry->window_listeners;
422 lists[2] = ®istry->toolkit_listeners;
424 for (i = 0; i < sizeof (lists) / sizeof (lists[0]); i++)
426 spi_re_entrant_list_foreach (lists [i], remove_listener_cb, listener);
432 * CORBA Accessibility::Registry::deregisterGlobalEventListener method implementation
435 impl_accessibility_registry_deregister_global_event_listener (
436 PortableServer_Servant servant,
437 Accessibility_EventListener listener,
438 const CORBA_char *event_name,
439 CORBA_Environment *ev)
441 SpiRegistry *registry;
442 EventTypeStruct etype;
444 registry = SPI_REGISTRY (bonobo_object_from_servant (servant));
446 parse_event_type (&etype, (char *) event_name);
448 spi_re_entrant_list_foreach (get_listener_list (registry, etype.type_cat),
449 remove_listener_cb, listener);
455 * return values: a short integer indicating the current number of
458 * Get the current number of desktops.
462 impl_accessibility_registry_get_desktop_count (PortableServer_Servant servant,
463 CORBA_Environment * ev)
465 /* TODO: implement support for multiple virtual desktops */
466 CORBA_short n_desktops;
467 n_desktops = (CORBA_short) 1;
474 * @n: the index of the requested @Desktop.
475 * return values: a reference to the requested @Desktop.
477 * Get the nth accessible desktop.
480 static Accessibility_Desktop
481 impl_accessibility_registry_get_desktop (PortableServer_Servant servant,
483 CORBA_Environment * ev)
485 SpiRegistry *registry = SPI_REGISTRY (bonobo_object_from_servant (servant));
487 /* TODO: implement support for multiple virtual desktops */
490 return (Accessibility_Desktop)
491 bonobo_object_dup_ref (BONOBO_OBJREF (registry->desktop), ev);
495 return (Accessibility_Desktop) CORBA_OBJECT_NIL;
502 * return values: a sequence containing references to
505 * Get a list of accessible desktops.
508 static Accessibility_DesktopSeq *
509 impl_accessibility_registry_get_desktop_list (PortableServer_Servant servant,
510 CORBA_Environment * ev)
512 SpiRegistry *registry = SPI_REGISTRY (bonobo_object_from_servant (servant));
513 Accessibility_DesktopSeq *desktops;
515 desktops = Accessibility_DesktopSeq__alloc ();
516 desktops->_length = desktops->_maximum = 1;
517 desktops->_buffer = Accessibility_DesktopSeq_allocbuf (desktops->_length);
518 desktops->_buffer [0] = bonobo_object_dup_ref (BONOBO_OBJREF (registry->desktop), ev);
524 static Accessibility_DeviceEventController
525 impl_accessibility_registry_get_device_event_controller (PortableServer_Servant servant,
526 CORBA_Environment *ev)
528 SpiRegistry *registry = SPI_REGISTRY (bonobo_object_from_servant (servant));
530 if (!registry->de_controller)
532 registry->de_controller = spi_device_event_controller_new (registry);
535 return bonobo_object_dup_ref (BONOBO_OBJREF (registry->de_controller), ev);
539 CORBA_Environment *ev;
540 Bonobo_Unknown source;
541 EventTypeStruct etype;
542 Accessibility_Event e_out;
545 static SpiReEntrantContinue
546 notify_listeners_cb (GList * const *list, gpointer user_data)
548 SpiListenerStruct *ls;
549 NotifyContext *ctx = user_data;
556 #ifdef SPI_LISTENER_DEBUG
557 fprintf (stderr, "event quarks: %lx %lx %lx\n", ls->event_type_quark, ctx->etype.major, ctx->etype.minor);
558 fprintf (stderr, "event name: %s\n", ctx->etype.event_name);
561 if ((ls->event_type_quark == ctx->etype.major) ||
562 (ls->event_type_quark == ctx->etype.minor))
565 fprintf (stderr, "notifying listener %d\n", 0);
566 /* g_list_index (list, l->data)); */
567 s = Accessibility_Accessible__get_name (ctx->source, ctx->ev);
568 fprintf (stderr, "event source name %s\n", s);
572 ctx->e_out.source = bonobo_object_dup_ref (ctx->source, ctx->ev);
573 if (BONOBO_EX (ctx->ev))
575 return SPI_RE_ENTRANT_CONTINUE;;
578 if ((*list) && (*list)->data == ls)
580 Accessibility_EventListener_notifyEvent (
581 (Accessibility_EventListener) ls->listener, &ctx->e_out, ctx->ev);
582 if (ctx->ev->_major != CORBA_NO_EXCEPTION)
584 g_warning ("Accessibility app error: exception during "
585 "event notification: %s\n",
586 CORBA_exception_id (ctx->ev));
589 else /* dup re-entered */
591 bonobo_object_release_unref (ctx->e_out.source, ctx->ev);
595 return SPI_RE_ENTRANT_CONTINUE;
599 impl_registry_notify_event (PortableServer_Servant servant,
600 const Accessibility_Event *e,
601 CORBA_Environment *ev)
603 SpiRegistry *registry;
607 registry = SPI_REGISTRY (bonobo_object_from_servant (servant));
609 parse_event_type (&ctx.etype, e->type);
611 list = get_listener_list (registry, ctx.etype.type_cat);
617 ctx.source = e->source;
618 parse_event_type (&ctx.etype, e->type);
620 spi_re_entrant_list_foreach (list, notify_listeners_cb, &ctx);
623 if (e->source != CORBA_OBJECT_NIL)
625 Accessibility_Accessible_unref (e->source, ev);
631 spi_registry_class_init (SpiRegistryClass *klass)
633 GObjectClass * object_class = (GObjectClass *) klass;
634 POA_Accessibility_Registry__epv *epv = &klass->epv;
636 spi_registry_parent_class = g_type_class_ref (SPI_LISTENER_TYPE);
638 object_class->finalize = spi_registry_object_finalize;
640 klass->parent_class.epv.notifyEvent = impl_registry_notify_event;
642 epv->registerApplication = impl_accessibility_registry_register_application;
643 epv->deregisterApplication = impl_accessibility_registry_deregister_application;
644 epv->registerGlobalEventListener = impl_accessibility_registry_register_global_event_listener;
645 epv->deregisterGlobalEventListener = impl_accessibility_registry_deregister_global_event_listener;
646 epv->deregisterGlobalEventListenerAll = impl_accessibility_registry_deregister_global_event_listener_all;
647 epv->getDeviceEventController = impl_accessibility_registry_get_device_event_controller;
648 epv->getDesktopCount = impl_accessibility_registry_get_desktop_count;
649 epv->getDesktop = impl_accessibility_registry_get_desktop;
650 epv->getDesktopList = impl_accessibility_registry_get_desktop_list;
654 spi_registry_init (SpiRegistry *registry)
656 registry->object_listeners = NULL;
657 registry->window_listeners = NULL;
658 registry->toolkit_listeners = NULL;
659 registry->desktop = spi_desktop_new ();
660 /* Register callback notification for application addition and removal */
661 g_signal_connect (G_OBJECT (registry->desktop),
663 G_CALLBACK (desktop_add_application),
666 g_signal_connect (G_OBJECT (registry->desktop),
667 "application_removed",
668 G_CALLBACK (desktop_remove_application),
671 registry->de_controller = NULL;
674 BONOBO_TYPE_FUNC_FULL (SpiRegistry,
675 Accessibility_Registry,
680 spi_registry_new (void)
682 SpiRegistry *retval = g_object_new (SPI_REGISTRY_TYPE, NULL);
683 bonobo_object_set_immortal (BONOBO_OBJECT (retval), TRUE);