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.
25 * Basic SPI initialization and event loop function prototypes
30 #include <cspi/spi-private.h>
34 static CORBA_Environment ev = { 0 };
35 static Accessibility_Registry registry = CORBA_OBJECT_NIL;
36 static GHashTable *live_refs = NULL;
39 cspi_object_hash (gconstpointer key)
41 CORBA_Object object = (CORBA_Object) key;
44 retval = CORBA_Object_hash (object, 0, &ev);
50 cspi_object_equal (gconstpointer a, gconstpointer b)
52 CORBA_Object objecta = (CORBA_Object) a;
53 CORBA_Object objectb = (CORBA_Object) b;
56 retval = CORBA_Object_is_equivalent (objecta, objectb, &ev);
62 cspi_object_release (gpointer value)
64 Accessible *a = (Accessible *) value;
67 g_print ("releasing %p => %p\n", a, a->objref);
70 cspi_release_unref (a->objref);
72 memset (a, 0xaa, sizeof (Accessible));
81 cspi_accessible_is_a (Accessible *obj,
82 const char *interface_name)
85 Bonobo_Unknown unknown;
92 unknown = Bonobo_Unknown_queryInterface (CSPI_OBJREF (obj),
93 interface_name, cspi_ev ());
95 if (ev._major != CORBA_NO_EXCEPTION)
97 g_error ("Exception '%s' checking if is '%s'",
98 cspi_exception_get_text (),
102 if (unknown != CORBA_OBJECT_NIL)
105 cspi_release_unref (unknown);
116 cspi_get_live_refs (void)
120 live_refs = g_hash_table_new_full (cspi_object_hash,
123 cspi_object_release);
131 /* This method is an ugly hack */
135 Accessibility_Registry
142 cspi_exception (void)
146 if (ev._major != CORBA_NO_EXCEPTION)
148 CORBA_exception_free (&ev);
160 cspi_object_add (CORBA_Object corba_object)
162 return cspi_object_add_ref (corba_object, FALSE);
166 cspi_object_add_ref (CORBA_Object corba_object, gboolean do_ref)
170 if (corba_object == CORBA_OBJECT_NIL)
174 else if (!cspi_check_ev ("pre method check: add"))
180 if ((ref = g_hash_table_lookup (cspi_get_live_refs (), corba_object)))
182 g_assert (ref->ref_count > 0);
185 cspi_release_unref (corba_object);
187 g_print ("returning cached %p => %p\n", ref, ref->objref);
192 ref = malloc (sizeof (Accessible));
195 g_print ("allocating %p => %p\n", ref, corba_object);
198 #ifdef JAVA_BRIDGE_BUG_IS_FIXED
199 g_assert (CORBA_Object_is_a (corba_object,
200 "IDL:Bonobo/Unknown:1.0", cspi_ev ()));
202 ref->objref = bonobo_object_dup_ref (corba_object, cspi_ev ());
204 ref->objref = corba_object;
207 g_hash_table_insert (cspi_get_live_refs (), ref->objref, ref);
215 cspi_object_ref (Accessible *accessible)
217 g_return_if_fail (accessible != NULL);
219 accessible->ref_count++;
223 cspi_object_unref (Accessible *accessible)
225 if (accessible == NULL)
230 if (--accessible->ref_count == 0)
232 g_hash_table_remove (cspi_get_live_refs (), accessible->objref);
245 g_hash_table_destroy (refs);
248 if (registry != CORBA_OBJECT_NIL)
250 cspi_release_unref (registry);
251 registry = CORBA_OBJECT_NIL;
255 static gboolean SPI_inited = FALSE;
260 * Connects to the accessibility registry and initializes the SPI.
262 * Returns: 0 on success, otherwise an integer error code.
274 CORBA_exception_init (&ev);
276 registry = cspi_init ();
278 g_atexit (cspi_cleanup);
286 * Starts/enters the main event loop for the SPI services.
288 * (NOTE: This method does not return control, it is exited via a call to
289 * SPI_event_quit () from within an event handler).
293 SPI_event_main (void)
301 * Quits the last main event loop for the SPI services,
305 SPI_event_quit (void)
313 * Checks to see if an SPI event is waiting in the event queue.
314 * Used by clients that don't wish to use SPI_event_main().
316 * Not Yet Implemented.
318 * Returns: #TRUE if an event is waiting, otherwise #FALSE.
329 * @waitForEvent: a #SPIBoolean indicating whether to block or not.
331 * Gets the next event in the SPI event queue; blocks if no event
332 * is pending and @waitForEvent is #TRUE.
333 * Used by clients that don't wish to use SPI_event_main().
335 * Not Yet Implemented.
337 * Returns: the next #AccessibleEvent in the SPI event queue.
340 SPI_nextEvent (SPIBoolean waitForEvent)
348 * Disconnects from the Accessibility Registry and releases
349 * any floating resources. Call only once at exit.
351 * Returns: 0 if there were no leaks, otherwise non zero.
367 leaked = g_hash_table_size (live_refs);
377 fprintf (stderr, "Leaked %d SPI handles\n", leaked);
383 fprintf (stderr, "bye-bye!\n");
390 * @s: a character string returned from another at-spi call.
392 * Free a character string returned from an at-spi call. Clients of
393 * at-spi should use this function instead of free () or g_free().
394 * This API should not be used to free strings
395 * from other libraries or allocated by the client.
398 SPI_freeString (char *s)