* AT-SPI - Assistive Technology Service Provider Interface
* (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
*
+ * Copyright 2008 Codethink Ltd.
* Copyright 2001, 2002, 2003 Sun Microsystems Inc.,
* Copyright 2001, 2002, 2003 Ximian, Inc.
*
#include "bridge.h"
#include "atk-dbus.h"
-#undef SPI_BRIDGE_DEBUG
-
-#define DBG(a,b) if(_dbg>=(a))b
-
-int _dbg = 0;
-static const char *registry = NULL;
-SpiAppData *this_app = NULL;
-static gboolean registry_died = FALSE;
-static gint toplevels = 0;
-static gboolean exiting = FALSE;
-static AtkMisc *misc = NULL;
-static gboolean during_init_shutdown = TRUE;
-
-static const char *spi_atk_bridge_get_registry (void);
-static char *device_event_controller = NULL;
-static void spi_atk_bridge_register_application (const char *registry);
-static gchar *spi_atk_bridge_get_registry_ior (void);
-static gboolean spi_atk_bridge_do_registration (void);
-static void spi_atk_bridge_toplevel_added (AtkObject *object,
- guint index,
- AtkObject *child);
-static void spi_atk_bridge_toplevel_removed (AtkObject *object,
- guint index,
- AtkObject *child);
-
-static void spi_atk_bridge_exit_func (void);
-static void spi_atk_tidy_windows (void);
-static void deregister_application (SpiAppData *app);
-static void reinit_register_vars (void);
-
-/* For automatic libgnome init */
-extern void gnome_accessibility_module_init (void);
-extern void gnome_accessibility_module_shutdown (void);
-
-static int atk_bridge_initialized = FALSE;
-static pid_t atk_bridge_pid = 0;
+void spi_atk_register_event_listeners (void);
+void spi_atk_deregister_event_listeners (void);
+void spi_atk_tidy_windows (void);
-/*
- * These exported symbols are hooked by gnome-program
- * to provide automatic module initialization and shutdown.
- */
-extern void gnome_accessibility_module_init (void);
-extern void gnome_accessibility_module_shutdown (void);
-
-void
-spi_atk_register_event_listeners(void);
-
-void
-spi_atk_deregister_event_listeners (void);
-
-static gboolean
-post_init (gpointer data)
-{
- during_init_shutdown = FALSE;
- return FALSE;
-}
+/*---------------------------------------------------------------------------*/
-static DBusObjectPathVTable droute_vtable =
-{
- NULL,
- &droute_message,
- NULL, NULL, NULL, NULL
-};
+SpiAppData *app_data = NULL;
-static gchar* atspi_dbus_name;
-static gboolean atspi_no_register;
+static const AtkMisc *atk_misc = NULL;
-static GOptionEntry atspi_option_entries[] =
-{
- {"atspi-dbus-name", 0, 0, G_OPTION_ARG_STRING, &atspi_dbus_name, "D-Bus bus name to register as", NULL},
- {"atspi-no-register", 0, 0, G_OPTION_ARG_NONE, &atspi_no_register, "Do not register with Registry Daemon", NULL},
- {NULL}
-};
+/*static Display *bridge_display = NULL;*/
-static SpiAppData *
-spi_app_init (AtkObject *root, gint *argc, gchar **argv[])
-{
- GOptionContext *opt;
- SpiAppData *ad = g_new0(SpiAppData, 1);
- GError *err = NULL;
- DBusError error;
- int i;
+/*---------------------------------------------------------------------------*/
- opt = g_option_context_new(NULL);
- g_option_context_add_main_entries(opt, atspi_option_entries, NULL);
- g_option_context_set_ignore_unknown_options(opt, TRUE);
- if (!g_option_context_parse(opt, argc, argv, &err))
- g_warning("Option parsing failed: %s\n", err->message);
-
- dbus_error_init(&error);
- ad->root = root;
- ad->droute.bus = dbus_bus_get(DBUS_BUS_SESSION, &error);
- g_print("D-Bus unique name is : %s\n", dbus_bus_get_unique_name(ad->droute.bus));
-
- if (!ad->droute.bus)
- {
- g_warning("Couldn't connect to dbus: %s\n", error.message);
- free(ad);
- return NULL;
- }
- if (atspi_dbus_name != NULL && dbus_bus_request_name(ad->droute.bus,
- atspi_dbus_name,
- 0,
- &error))
- {
- g_print("\nRecieved D-Bus name - %s\n", atspi_dbus_name);
- }
- spi_register_tree_object(ad->droute.bus, &ad->droute, "/org/freedesktop/atspi/tree");
- if (!dbus_connection_try_register_fallback (ad->droute.bus,
- "/org/freedesktop/atspi/accessible",
- &droute_vtable,
- &ad->droute,
- &error))
- {
- g_warning("Couldn't register droute.\n");
- free(ad);
- return NULL;
- }
-
- dbus_connection_setup_with_g_main(ad->droute.bus, g_main_context_default());
-
- atk_dbus_initialize (&ad->droute);
- return ad;
-}
-
-static int
-atk_bridge_init (gint *argc, gchar **argv[])
-{
- const char *debug_env_string = g_getenv ("AT_SPI_DEBUG");
- gchar *fname;
- gboolean success = FALSE;
-
- if (atk_bridge_initialized)
- {
- return 0;
- }
- atk_bridge_initialized = TRUE;
- atk_bridge_pid = getpid ();
-
- misc = atk_misc_get_instance();
-
- if (g_getenv ("ATK_BRIDGE_REDIRECT_LOG"))
- {
- fname = g_strconcat ("/tmp/", g_get_prgname (), ".at-spi-log", NULL);
- /* make sure we're not being redirected - security issue */
- if (!g_file_test (fname, G_FILE_TEST_IS_SYMLINK))
- freopen (fname, "w", stderr);
- g_free (fname);
- }
-
- if (debug_env_string)
- _dbg = (int) g_ascii_strtod (debug_env_string, NULL);
-
- /* Connect to dbus */
- this_app = spi_app_init (atk_get_root (), argc, argv);
-
- /*
- * We only want to enable the bridge for top level
- * applications, we detect bonobo components by seeing
- * if they were activated with the intention of extracting
- * an impl. by IID - very solid.
- */
-#ifdef WITH_BONOBO
- // TODO: Figure out if this is still needed
- if (bonobo_activation_iid_get ())
-#else
- if (0)
-#endif
- {
- DBG (1, g_message ("Found Bonobo component\n"));
- g_signal_connect (atk_get_root (),
- "children-changed::add",
- (GCallback) spi_atk_bridge_toplevel_added,
- NULL);
- g_signal_connect (atk_get_root (),
- "children-changed::remove",
- (GCallback) spi_atk_bridge_toplevel_removed,
- NULL);
- /* in this case we redefine 'success' to mean 'registry is present' */
- success = (spi_atk_bridge_get_registry () != NULL);
- }
- else
- {
- success = spi_atk_bridge_do_registration ();
- }
- /*
- * we must emit events even if we are not registered as a
- * full-fledged app; See bugzilla #400709.
- */
- if (success)
- {
- spi_atk_register_event_listeners ();
- }
- else
- {
- atk_bridge_initialized = FALSE;
- }
- g_idle_add (post_init, NULL);
-
- return 0;
-}
-
-static gboolean
-spi_atk_bridge_do_registration (void)
-{
- if (spi_atk_bridge_get_registry () == NULL)
- {
- g_warning ("Could not locate registry");
- return FALSE;
- }
-
- /* Create the accessible application server object */
- if (this_app == NULL)
- this_app = spi_app_init (atk_get_root (), 0, NULL);
-
- DBG (1, g_message ("About to register application\n"));
-
- spi_atk_bridge_register_application (spi_atk_bridge_get_registry ());
-
- g_atexit (spi_atk_bridge_exit_func);
-
- DBG (1, g_message ("Application registered & listening\n"));
- return TRUE;
-}
-
-static void
-spi_atk_bridge_toplevel_added (AtkObject *object,
- guint index,
- AtkObject *child)
-{
- if (toplevels == 0)
- {
- spi_atk_bridge_do_registration ();
- }
- toplevels++;
-}
-
-static void
-spi_atk_bridge_toplevel_removed (AtkObject *object,
- guint index,
- AtkObject *child)
-{
- toplevels--;
- if (toplevels == 0)
- {
- deregister_application (this_app);
- reinit_register_vars ();
- }
- if (toplevels < 0)
- {
- g_warning ("More toplevels removed than added\n");
- toplevels = 0;
- }
-}
-
-static void
-spi_atk_bridge_register_application (const char *registry)
-{
- DBusMessage *message, *reply;
- DBusError error;
-
- message = dbus_message_new_signal (SPI_DBUS_PATH_REGISTRY, SPI_DBUS_INTERFACE_TREE, "registerApplication");
- dbus_error_init (&error);
- dbus_connection_send (this_app->droute.bus, message, NULL);
- if (error.message) g_print (error.message);
- if (message) dbus_message_unref (message);
-}
-
-/*
+/*
* Returns a 'canonicalized' value for DISPLAY,
* with the screen number stripped off if present.
+ *
+ * Not currently used in D-Bus version but may be
+ * useful in future if we make use of XAtom.
*/
+#if 0
static const gchar*
spi_display_name (void)
{
if (!canonical_display_name)
{
const gchar *display_env = g_getenv ("AT_SPI_DISPLAY");
- if (!display_env)
- {
- display_env = g_getenv ("DISPLAY");
- if (!display_env || !display_env[0])
- canonical_display_name = ":0";
- else
- {
- gchar *display_p, *screen_p;
- canonical_display_name = g_strdup (display_env);
- display_p = strrchr (canonical_display_name, ':');
- screen_p = strrchr (canonical_display_name, '.');
- if (screen_p && display_p && (screen_p > display_p))
- {
- *screen_p = '\0';
- }
- }
- }
- else
- {
- canonical_display_name = display_env;
- }
+ if (!display_env)
+ {
+ display_env = g_getenv ("DISPLAY");
+ if (!display_env || !display_env[0])
+ canonical_display_name = ":0";
+ else
+ {
+ gchar *display_p, *screen_p;
+ canonical_display_name = g_strdup (display_env);
+ display_p = strrchr (canonical_display_name, ':');
+ screen_p = strrchr (canonical_display_name, '.');
+ if (screen_p && display_p && (screen_p > display_p))
+ {
+ *screen_p = '\0';
+ }
+ }
+ }
+ else
+ {
+ canonical_display_name = display_env;
+ }
}
return canonical_display_name;
}
+#endif
-static Display *bridge_display = NULL;
+/*---------------------------------------------------------------------------*/
+/*
+ * Gets the IOR from the XDisplay.
+ * Not currently used in D-Bus version, but something similar
+ * may be employed in the future for accessing the registry daemon
+ * bus name.
+ */
+#if 0
static gchar *
spi_atk_bridge_get_registry_ior (void)
{
-
Atom AT_SPI_IOR;
Atom actual_type;
int actual_format;
AT_SPI_IOR = XInternAtom (bridge_display, "AT_SPI_IOR", False);
XGetWindowProperty(bridge_display,
- XDefaultRootWindow (bridge_display),
- AT_SPI_IOR, 0L,
- (long)BUFSIZ, False,
- (Atom) 31, &actual_type, &actual_format,
- &nitems, &leftover, &data);
+ XDefaultRootWindow (bridge_display),
+ AT_SPI_IOR, 0L,
+ (long)BUFSIZ, False,
+ (Atom) 31, &actual_type, &actual_format,
+ &nitems, &leftover, &data);
if (data == NULL)
- g_warning (_("AT_SPI_REGISTRY was not started at session startup."));
-
+ g_warning (_("AT_SPI_REGISTRY was not started at session startup."));
return (gchar *) data;
-
}
+#endif
-static const char *
-spi_atk_bridge_get_registry (void)
-{
- // TODO: check for registry dying, as the old code attempted to do
- return "org.freedesktop.atspi.registry";
-}
+/*---------------------------------------------------------------------------*/
-static const char *
-spi_atk_bridge_get_dec (void)
+static void
+register_application (SpiAppData *app)
{
- return "/dec";
-}
+ DBusMessage *message;
+ DBusMessageIter iter;
+ DBusError error;
+ const char *uname;
-int
-gtk_module_init (gint *argc, gchar **argv[])
-{
- //printf("Pointer to argc %x %x\n", (short) ((argc && 0xffff0000) >> 16), (short) (argc && 0xffff));
- return atk_bridge_init (argc, argv);
+ dbus_error_init (&error);
+
+ message = dbus_message_new_method_call (SPI_DBUS_NAME_REGISTRY,
+ SPI_DBUS_PATH_REGISTRY,
+ SPI_DBUS_INTERFACE_REGISTRY,
+ "registerApplication");
+ dbus_message_set_no_reply (message, TRUE);
+
+ uname = dbus_bus_get_unique_name(app->droute.bus);
+
+ dbus_message_iter_init_append(message, &iter);
+ dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &uname);
+ dbus_connection_send (app->droute.bus, message, NULL);
+ if (message) dbus_message_unref (message);
}
+/*---------------------------------------------------------------------------*/
+
static void
deregister_application (SpiAppData *app)
{
- const char *registry = spi_atk_bridge_get_registry ();
- // todo: deregister
+ DBusMessage *message;
+ DBusMessageIter iter;
+ DBusError error;
+ const char *uname;
+
+ dbus_error_init (&error);
+
+ message = dbus_message_new_method_call (SPI_DBUS_NAME_REGISTRY,
+ SPI_DBUS_PATH_REGISTRY,
+ SPI_DBUS_INTERFACE_REGISTRY,
+ "deregisterApplication");
+ dbus_message_set_no_reply (message, TRUE);
+
+ uname = dbus_bus_get_unique_name(app->droute.bus);
+
+ dbus_message_iter_init_append(message, &iter);
+ dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &uname);
+ dbus_connection_send (app->droute.bus, message, NULL);
+ if (message) dbus_message_unref (message);
}
+/*---------------------------------------------------------------------------*/
+
static void
-spi_atk_bridge_exit_func (void)
+exit_func (void)
{
- SpiAppData *app = (SpiAppData *) this_app;
-
- DBG (1, g_message ("exiting bridge\n"));
-
- if (!app)
+ if (!app_data)
{
return;
}
- if (atk_bridge_pid != getpid ())
- {
- _exit (0);
- }
- during_init_shutdown = TRUE;
- exiting = TRUE;
- /*
- * Check whether we still have windows which have not been deleted.
- */
spi_atk_tidy_windows ();
- /*
- * FIXME: this may be incorrect for apps that do their own bonobo
- * shutdown, until we can explicitly shutdown to get the ordering
- * right.
- */
- if (!registry_died)
- deregister_application (this_app);
- this_app = NULL;
- DBG (1, g_message ("bridge exit func complete.\n"));
-
- if (g_getenv ("AT_BRIDGE_SHUTDOWN"))
- {
- }
+ spi_atk_deregister_event_listeners();
+ deregister_application (app_data);
+
+ g_free(app_data);
+ app_data = NULL;
+
+ /* Not currently creating an XDisplay */
+#if 0
if (bridge_display)
XCloseDisplay (bridge_display);
+#endif
}
-void
-gnome_accessibility_module_init (void)
+/*---------------------------------------------------------------------------*/
+
+static DBusObjectPathVTable droute_vtable =
{
- atk_bridge_init (0, NULL);
+ NULL,
+ &droute_message,
+ NULL, NULL, NULL, NULL
+};
- if (g_getenv ("AT_BRIDGE_SHUTDOWN"))
- {
- g_print("Atk Accessibility bridge initialized\n");
- }
-}
+static gchar *atspi_dbus_name;
+static gboolean atspi_no_register;
-void
-gnome_accessibility_module_shutdown (void)
+static GOptionEntry atspi_option_entries[] =
{
- int i;
-
- if (!atk_bridge_initialized)
- {
- return;
- }
- during_init_shutdown = TRUE;
- atk_bridge_initialized = FALSE;
+ {"atspi-dbus-name", 0, 0, G_OPTION_ARG_STRING, &atspi_dbus_name, "D-Bus bus name to register as", NULL},
+ {"atspi-no-register", 0, 0, G_OPTION_ARG_NONE, &atspi_no_register, "Do not register with Registry Daemon", NULL},
+ {NULL}
+};
- if (g_getenv ("AT_BRIDGE_SHUTDOWN"))
- {
- g_print("Atk Accessibility bridge shutdown\n");
- }
+/*
+ * spi_app_init
+ *
+ * The following needs to be initialized.
+ *
+ * - DRoute for routing message to their accessible objects.
+ * - Event handlers for emmitting signals on specific ATK events.
+ * - Application registration with the AT-SPI registry.
+ *
+ */
+static int
+adaptor_init (gint *argc, gchar **argv[])
+{
+ GOptionContext *opt;
+ GError *err = NULL;
+ DBusError error;
- spi_atk_deregister_event_listeners();
+ if (app_data != NULL)
+ return 0;
+
+ /* Parse command line options */
+ opt = g_option_context_new(NULL);
+ g_option_context_add_main_entries(opt, atspi_option_entries, NULL);
+ g_option_context_set_ignore_unknown_options(opt, TRUE);
+ if (!g_option_context_parse(opt, argc, argv, &err))
+ g_warning("AT-SPI Option parsing failed: %s\n", err->message);
+
+ /* Allocate global data and do ATK initializations */
+ app_data = g_new0 (SpiAppData, 1);
+ atk_misc = atk_misc_get_instance ();
+
+ /* Get D-Bus connection, register D-Bus name*/
+ dbus_error_init (&error);
+ app_data->root = atk_get_root();
+ app_data->droute.bus = dbus_bus_get (DBUS_BUS_SESSION, &error);
+ if (!app_data->droute.bus)
+ {
+ g_warning ("AT-SPI Couldn't connect to D-Bus: %s\n", error.message);
+ g_free(app_data);
+ app_data = NULL;
+ return 0;
+ }
+ if (atspi_dbus_name != NULL &&
+ dbus_bus_request_name(app_data->droute.bus, atspi_dbus_name, 0, &error))
+ {
+ g_print("AT-SPI Recieved D-Bus name - %s\n", atspi_dbus_name);
+ }
- deregister_application (this_app);
- this_app = NULL;
+ /* Finish setting up D-Bus */
+ dbus_connection_setup_with_g_main(app_data->droute.bus, g_main_context_default());
- misc = NULL;
+ /* Register droute for routing AT-SPI messages */
+ spi_register_tree_object(app_data->droute.bus, &app_data->droute, "/org/freedesktop/atspi/tree");
+
+ if (!dbus_connection_register_fallback (app_data->droute.bus,
+ "/org/freedesktop/atspi/accessible",
+ &droute_vtable,
+ &app_data->droute))
+ {
+ g_warning("AT-SPI Couldn't register droute.\n");
+ g_free(app_data);
+ app_data = NULL;
+ return 0;
+ }
+
+ /* Register all interfaces with droute and set up application accessible db */
+ atk_dbus_initialize (&app_data->droute);
+
+ /* Register methods to send D-Bus signals on certain ATK events */
+ spi_atk_register_event_listeners ();
+
+ /* Register this app by sending a signal out to AT-SPI registry daemon */
+ register_application (app_data);
+
+ g_atexit (exit_func);
+
+ return 0;
}
-static void
-reinit_register_vars (void)
+/*---------------------------------------------------------------------------*/
+
+int
+gtk_module_init (gint *argc, gchar **argv[])
{
- registry = NULL;
- device_event_controller = NULL;
- this_app = NULL;
+ return adaptor_init (argc, argv);
}
+
+/*END------------------------------------------------------------------------*/
projects / platform / core / uifw / at-spi2-atk.git / blobdiff