-/*
- * AT-SPI - Assistive Technology Service Provider Interface
- * (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
- *
- * Copyright 2011, F123 Consulting & Mais Diferenças
- * Copyright 2008, 2009, Codethink Ltd.
- * Copyright 2001, 2002, 2003 Sun Microsystems Inc.,
- * Copyright 2001, 2002, 2003 Ximian, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- */
-
-#include <string.h>
-#include <ctype.h>
-
-#include <atk/atk.h>
-#include <droute/droute.h>
-#include <atspi/atspi.h>
-
-#include "bridge.h"
-#include "accessible-register.h"
-
-#include "spi-dbus.h"
-#include "event.h"
-#include "object.h"
-
-static GArray *listener_ids = NULL;
-
-static gint atk_bridge_key_event_listener_id;
-static gint atk_bridge_focus_tracker_id;
-
-GMainContext *spi_context = NULL;
-
-/*---------------------------------------------------------------------------*/
-
-#define ITF_EVENT_OBJECT "org.a11y.atspi.Event.Object"
-#define ITF_EVENT_WINDOW "org.a11y.atspi.Event.Window"
-#define ITF_EVENT_DOCUMENT "org.a11y.atspi.Event.Document"
-#define ITF_EVENT_FOCUS "org.a11y.atspi.Event.Focus"
-
-/*---------------------------------------------------------------------------*/
-
-typedef struct _SpiReentrantCallClosure
-{
- DBusConnection *bus;
- GMainLoop *loop;
- DBusMessage *reply;
- guint timeout;
-} SpiReentrantCallClosure;
-
-static void
-switch_main_context (GMainContext *cnx)
-{
- GList *list;
-
- if (spi_global_app_data->server)
- atspi_dbus_server_setup_with_g_main (spi_global_app_data->server, cnx);
- atspi_dbus_connection_setup_with_g_main (spi_global_app_data->bus, cnx);
- atspi_set_main_context (cnx);
- for (list = spi_global_app_data->direct_connections; list; list = list->next)
- atspi_dbus_connection_setup_with_g_main (list->data, cnx);
-
- if (_atk_bridge_remove_pending_application_registration (spi_global_app_data))
- _atk_bridge_schedule_application_registration (spi_global_app_data);
-}
-
-guint
-spi_idle_add(GSourceFunc function, gpointer data)
-{
- GSource *source;
- guint id;
-
- source = g_idle_source_new ();
- g_source_set_callback (source, function, data, NULL);
- id = g_source_attach (source, spi_context);
- g_source_unref (source);
-
- return id;
-}
-
-guint
-spi_timeout_add_seconds (gint interval, GSourceFunc function, gpointer data)
-{
- GSource *source;
- guint id;
-
- source = g_timeout_source_new_seconds (interval);
- g_source_set_callback (source, function, data, NULL);
- id = g_source_attach (source, spi_context);
- g_source_unref (source);
-
- return id;
-}
-
-guint
-spi_timeout_add_full (gint priority, guint interval, GSourceFunc function,
- gpointer data, GDestroyNotify notify)
-{
- GSource *source;
- guint id;
-
- source = g_timeout_source_new (interval);
- g_source_set_priority (source, priority);
- g_source_set_callback (source, function, data, notify);
- id = g_source_attach (source, spi_context);
- g_source_unref (source);
-
- return id;
-}
-
-static void
-set_reply (DBusPendingCall * pending, void *user_data)
-{
- SpiReentrantCallClosure* closure = (SpiReentrantCallClosure *) user_data;
-
- closure->reply = dbus_pending_call_steal_reply (pending);
- dbus_pending_call_unref (pending);
- switch_main_context (spi_context);
- g_main_loop_quit (closure->loop);
-}
-
-static gboolean
-timeout_reply (void *data)
-{
- SpiReentrantCallClosure *closure = data;
-
- switch_main_context (spi_context);
- g_main_loop_quit (closure->loop);
- closure->timeout = -1;
- return FALSE;
-}
-
-static DBusMessage *
-send_and_allow_reentry (DBusConnection * bus, DBusMessage * message)
-{
- DBusPendingCall *pending;
- SpiReentrantCallClosure closure;
- GSource *source;
-
- closure.bus = bus;
- closure.loop = g_main_loop_new (spi_global_app_data->main_context, FALSE);
- closure.reply = NULL;
- switch_main_context (spi_global_app_data->main_context);
-
- if (!dbus_connection_send_with_reply (bus, message, &pending, 9000) || !pending)
- {
- switch_main_context (spi_context);
- return NULL;
- }
- dbus_pending_call_set_notify (pending, set_reply, (void *) &closure, NULL);
- source = g_timeout_source_new (500);
- g_source_set_callback (source, timeout_reply, &closure, NULL);
- closure.timeout = g_source_attach (source, spi_global_app_data->main_context);
- g_source_unref (source);
- g_main_loop_run (closure.loop);
- if (closure.timeout != -1)
- g_source_destroy (source);
-
- g_main_loop_unref (closure.loop);
- if (!closure.reply)
- dbus_pending_call_cancel (pending);
- return closure.reply;
-}
-
-void
-atk_bridge_set_event_context(GMainContext *cnx)
-{
- spi_context = cnx;
- switch_main_context(spi_context);
-}
-
-/*---------------------------------------------------------------------------*/
-
-/*
- * Functionality related to sending device events from the application.
- *
- * This is used for forwarding key events on to the registry daemon.
- */
-
-static gboolean
-Accessibility_DeviceEventController_NotifyListenersSync (const
- AtspiDeviceEvent
- * key_event)
-{
- DBusMessage *message;
- dbus_bool_t consumed = FALSE;
-
- message =
- dbus_message_new_method_call (SPI_DBUS_NAME_REGISTRY,
- ATSPI_DBUS_PATH_DEC,
- ATSPI_DBUS_INTERFACE_DEC,
- "NotifyListenersSync");
-
- if (spi_dbus_marshal_deviceEvent (message, key_event))
- {
- DBusMessage *reply =
- send_and_allow_reentry (spi_global_app_data->bus, message);
- if (reply)
- {
- DBusError error;
- dbus_error_init (&error);
- if (!dbus_message_get_args (reply, &error, DBUS_TYPE_BOOLEAN,
- &consumed, DBUS_TYPE_INVALID))
- {
- /* TODO: print a warning */
- dbus_error_free (&error);
- }
- dbus_message_unref (reply);
- }
- }
- dbus_message_unref (message);
- return consumed;
-}
-
-static void
-spi_init_keystroke_from_atk_key_event (AtspiDeviceEvent * keystroke,
- AtkKeyEventStruct * event)
-{
- keystroke->id = (dbus_int32_t) event->keyval;
- keystroke->hw_code = (dbus_int16_t) event->keycode;
- keystroke->timestamp = (dbus_uint32_t) event->timestamp;
- keystroke->modifiers = (dbus_uint16_t) (event->state & 0xFFFF);
- if (event->string)
- {
- gunichar c;
-
- keystroke->event_string = g_strdup (event->string);
- c = g_utf8_get_char_validated (event->string, -1);
- if (c > 0 && g_unichar_isprint (c))
- keystroke->is_text = TRUE;
- else
- keystroke->is_text = FALSE;
- }
- else
- {
- keystroke->event_string = g_strdup ("");
- keystroke->is_text = FALSE;
- }
- switch (event->type)
- {
- case (ATK_KEY_EVENT_PRESS):
- keystroke->type = ATSPI_KEY_PRESSED;
- break;
- case (ATK_KEY_EVENT_RELEASE):
- keystroke->type = ATSPI_KEY_RELEASED;
- break;
- default:
- keystroke->type = 0;
- break;
- }
-#if 0
- g_print
- ("key_event type %d; val=%d code=%d modifiers=%x name=%s is_text=%d, time=%lx\n",
- (int) keystroke->type, (int) keystroke->id, (int) keystroke->hw_code,
- (int) keystroke->modifiers, keystroke->event_string,
- (int) keystroke->is_text, (unsigned long) keystroke->timestamp);
-#endif
-}
-
-
-static gint
-spi_atk_bridge_key_listener (AtkKeyEventStruct * event, gpointer data)
-{
- gboolean result;
- AtspiDeviceEvent key_event;
-
- spi_init_keystroke_from_atk_key_event (&key_event, event);
-
- result =
- Accessibility_DeviceEventController_NotifyListenersSync (&key_event);
-
- if (key_event.event_string)
- g_free (key_event.event_string);
-
- return result;
-}
-
-/*---------------------------------------------------------------------------*/
-
-static const void *
-validate_for_dbus (const gint type,
- const void *val)
-{
- switch (type)
- {
- case DBUS_TYPE_STRING:
- case DBUS_TYPE_OBJECT_PATH:
- if (!val)
- return "";
- else if (!g_utf8_validate (val, -1, NULL))
- {
- g_warning ("atk-bridge: Received bad UTF-8 string when emitting event");
- return "";
- }
- else
- return val;
- default:
- return val;
- }
-}
-
-static void
-append_basic (DBusMessageIter *iter,
- const char *type,
- const void *val)
-{
- DBusMessageIter sub;
-
- dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &sub);
-
- val = validate_for_dbus ((int) *type, val);
- dbus_message_iter_append_basic(&sub, (int) *type, &val);
-
- dbus_message_iter_close_container(iter, &sub);
-}
-
-static void
-append_rect (DBusMessageIter *iter,
- const char *type,
- const void *val)
-{
- DBusMessageIter variant, sub;
- const AtkRectangle *rect = (const AtkRectangle *) val;
-
- dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, type, &variant);
-
- dbus_message_iter_open_container (&variant, DBUS_TYPE_STRUCT, NULL, &sub);
-
- dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->x));
- dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->y));
- dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->width));
- dbus_message_iter_append_basic (&sub, DBUS_TYPE_INT32, &(rect->height));
-
- dbus_message_iter_close_container (&variant, &sub);
-
- dbus_message_iter_close_container(iter, &variant);
-}
-
-static void
-append_object (DBusMessageIter *iter,
- const char *type,
- const void *val)
-{
- spi_object_append_v_reference (iter, ATK_OBJECT (val));
-}
-
-static gchar *
-signal_name_to_dbus (const gchar *s)
-{
- gchar *ret = g_strdup (s);
- gchar *t;
-
- if (!ret)
- return NULL;
- ret [0] = toupper (ret [0]);
- while ((t = strchr (ret, '-')) != NULL)
- {
- memmove (t, t + 1, strlen (t));
- *t = toupper (*t);
- }
- return ret;
-}
-
-/*
- * Converts names of the form "active-descendant-changed" to
- * "ActiveDescendantChanged"
- */
-static gchar *
-ensure_proper_format (const char *name)
-{
- gchar *ret = (gchar *) g_malloc (strlen (name) * 2 + 2);
- gchar *p = ret;
- gboolean need_upper = TRUE;
-
- if (!ret)
- return NULL;
- while (*name)
- {
- if (need_upper)
- {
- *p++ = toupper (*name);
- need_upper = FALSE;
- }
- else if (*name == '-')
- need_upper = TRUE;
- else if (*name == ':')
- {
- need_upper = TRUE;
- *p++ = *name;
- }
- else
- *p++ = *name;
- name++;
- }
- *p = '\0';
- return ret;
-}
-
-void
-append_properties (GArray *properties, event_data *evdata)
-{
- GSList *ls;
- gint i;
-
- for (ls = evdata->properties; ls; ls = ls->next)
- {
- gboolean dup = FALSE;
- for (i = 0; i < properties->len; i++)
- {
- if (ls->data == g_array_index (properties, AtspiPropertyDefinition *, i))
- {
- dup = TRUE;
- break;
- }
- }
- if (!dup)
- g_array_append_val (properties, ls->data);
- }
-}
-
-static gboolean
-signal_is_needed (AtkObject *obj, const gchar *klass, const gchar *major,
- const gchar *minor, GArray **properties)
-{
- gchar *data [4];
- event_data *evdata;
- gboolean ret = FALSE;
- GList *list;
- GArray *props = NULL;
-
- if (!spi_global_app_data->events_initialized)
- return TRUE;
-
- data [0] = ensure_proper_format (klass[0] ? klass + 21 : klass);
- data [1] = ensure_proper_format (major);
- data [2] = ensure_proper_format (minor);
- data [3] = NULL;
-
- /* Hack: Always pass events that update the cache.
- * TODO: FOr 2.2, have at-spi2-core define a special "cache listener" for
- * this instead, so that we don't send these if no one is listening */
- if (!g_strcmp0 (data [1], "ChildrenChanged") ||
- ((!g_strcmp0 (data [1], "PropertyChange")) &&
- (!g_strcmp0 (data [2], "AccessibleName") ||
- !g_strcmp0 (data [2], "AccessibleDescription") ||
- !g_strcmp0 (data [2], "AccessibleParent") ||
- !g_strcmp0 (data [2], "AccessibleRole"))) ||
- !g_strcmp0 (data [1], "StateChanged"))
- {
- if (minor && !g_strcmp0 (minor, "defunct"))
- ret = TRUE;
- else
- {
- AtkStateSet *set = atk_object_ref_state_set (obj);
- AtkState state = ((!g_strcmp0 (data[1], "ChildrenChanged")) ?
- ATK_STATE_MANAGES_DESCENDANTS : ATK_STATE_TRANSIENT);
- ret = !atk_state_set_contains_state (set, state);
- g_object_unref (set);
- }
- }
-
- /* Hack: events such as "object::text-changed::insert:system" as
- generated by Gecko */
- data [2][strcspn (data [2], ":")] = '\0';
-
- for (list = spi_global_app_data->events; list; list = list->next)
- {
- evdata = list->data;
- if (spi_event_is_subtype (data, evdata->data))
- {
- ret = TRUE;
- if (!props)
- props = g_array_new (TRUE, TRUE, sizeof (AtspiPropertyDefinition *));
- append_properties (props, evdata);
- }
- }
-
- g_free (data [2]);
- g_free (data [1]);
- g_free (data [0]);
- *properties = props;
- return ret;
-}
-
-/* Convert a : to a / so that listeners can use arg0path to match only
- * * the prefix */
-static char *
-adapt_minor_for_dbus (const char *source)
-{
- gchar *ret = g_strdup (source);
- int i = strcspn (ret, ":");
- if (ret[i] == ':')
- ret[i] = '/';
- return ret;
-}
-
-/*
- * Emits an AT-SPI event.
- * AT-SPI events names are split into three parts:
- * class:major:minor
- * This is mapped onto D-Bus events as:
- * D-Bus Interface:Signal Name:Detail argument
- *
- * Marshals a basic type into the 'any_data' attribute of
- * the AT-SPI event.
- */
-static void
-emit_event (AtkObject *obj,
- const char *klass,
- const char *major,
- const char *minor,
- dbus_int32_t detail1,
- dbus_int32_t detail2,
- const char *type,
- const void *val,
- void (*append_variant) (DBusMessageIter *, const char *, const void *))
-{
- DBusConnection *bus = spi_global_app_data->bus;
- char *path;
- char *minor_dbus;
-
- gchar *cname;
- DBusMessage *sig;
- DBusMessageIter iter, iter_dict, iter_dict_entry;
- GArray *properties = NULL;
-
- if (!klass) klass = "";
- if (!major) major = "";
- if (!minor) minor = "";
- if (!type) type = "u";
-
- if (!signal_is_needed (obj, klass, major, minor, &properties))
- return;
-
- path = spi_register_object_to_path (spi_global_register, G_OBJECT (obj));
- g_return_if_fail (path != NULL);
-
- /*
- * This is very annoying, but as '-' isn't a legal signal
- * name in D-Bus (Why not??!?) The names need converting
- * on this side, and again on the client side.
- */
- cname = signal_name_to_dbus (major);
- sig = dbus_message_new_signal(path, klass, cname);
-
- dbus_message_iter_init_append(sig, &iter);
-
- minor_dbus = adapt_minor_for_dbus (minor);
- dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &minor_dbus);
- g_free (minor_dbus);
- dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail1);
- dbus_message_iter_append_basic(&iter, DBUS_TYPE_INT32, &detail2);
- append_variant (&iter, type, val);
-
- dbus_message_iter_open_container (&iter, DBUS_TYPE_ARRAY, "{sv}", &iter_dict);
- /* Add requested properties, unless the object is being marked defunct, in
- which case it's safest not to touch it */
- if (minor == NULL || strcmp (minor, "defunct") != 0 || detail1 == 0)
- {
- if (properties)
- {
- gint i;
- for (i = 0; i < properties->len; i++)
- {
- AtspiPropertyDefinition *prop = g_array_index (properties, AtspiPropertyDefinition *, i);
- dbus_message_iter_open_container (&iter_dict, DBUS_TYPE_DICT_ENTRY, NULL,
- &iter_dict_entry);
- dbus_message_iter_append_basic (&iter_dict_entry, DBUS_TYPE_STRING, &prop->name);
- prop->func (&iter_dict_entry, obj);
- dbus_message_iter_close_container (&iter_dict, &iter_dict_entry);
- }
- g_array_free (properties, TRUE);
- }
- }
- dbus_message_iter_close_container (&iter, &iter_dict);
-
- dbus_connection_send(bus, sig, NULL);
- dbus_message_unref(sig);
-
- if (g_strcmp0 (cname, "ChildrenChanged") != 0)
- spi_object_lease_if_needed (G_OBJECT (obj));
-
- g_free(cname);
- g_free (path);
-}
-
-/*---------------------------------------------------------------------------*/
-
-/*
- * The focus listener handles the ATK 'focus' signal and forwards it
- * as the AT-SPI event, 'focus:'
- */
-static void
-focus_tracker (AtkObject * accessible)
-{
- emit_event (accessible, ITF_EVENT_FOCUS, "focus", "", 0, 0,
- DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
-}
-
-/*---------------------------------------------------------------------------*/
-
-#define PCHANGE "PropertyChange"
-
-/*
- * This handler handles the following ATK signals and
- * converts them to AT-SPI events:
- *
- * Gtk:AtkObject:property-change -> object:property-change:(property-name)
- *
- * The property-name is part of the ATK property-change signal.
- */
-static gboolean
-property_event_listener (GSignalInvocationHint * signal_hint,
- guint n_param_values,
- const GValue * param_values, gpointer data)
-{
- AtkObject *accessible;
- AtkPropertyValues *values;
-
- const gchar *pname = NULL;
-
- AtkObject *otemp;
- const gchar *s1;
- gint i;
-
- accessible = g_value_get_object (¶m_values[0]);
- values = (AtkPropertyValues *) g_value_get_pointer (¶m_values[1]);
-
- pname = values[0].property_name;
-
- /* TODO Could improve this control statement by matching
- * on only the end of the signal names,
- */
- if (strcmp (pname, "accessible-name") == 0)
- {
- s1 = atk_object_get_name (accessible);
- if (s1 != NULL)
- emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
- DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
- }
- else if (strcmp (pname, "accessible-description") == 0)
- {
- s1 = atk_object_get_description (accessible);
- if (s1 != NULL)
- emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
- DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
- }
- else if (strcmp (pname, "accessible-parent") == 0)
- {
- otemp = atk_object_get_parent (accessible);
- if (otemp != NULL)
- emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
- "(so)", otemp, append_object);
- }
- else if (strcmp (pname, "accessible-role") == 0)
- {
- i = atk_object_get_role (accessible);
- emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
- DBUS_TYPE_UINT32_AS_STRING, GINT_TO_POINTER(i), append_basic);
- }
- else if (strcmp (pname, "accessible-table-summary") == 0)
- {
- otemp = atk_table_get_summary (ATK_TABLE (accessible));
- if (otemp != NULL)
- emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
- "(so)", otemp, append_object);
- }
- else if (strcmp (pname, "accessible-table-column-header") == 0)
- {
- i = g_value_get_int (&(values->new_value));
- otemp = atk_table_get_column_header (ATK_TABLE (accessible), i);
- if (otemp != NULL)
- emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
- "(so)", otemp, append_object);
- }
- else if (strcmp (pname, "accessible-table-row-header") == 0)
- {
- i = g_value_get_int (&(values->new_value));
- otemp = atk_table_get_row_header (ATK_TABLE (accessible), i);
- if (otemp != NULL)
- emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
- "(so)", otemp, append_object);
- }
- else if (strcmp (pname, "accessible-table-row-description") == 0)
- {
- i = g_value_get_int (&(values->new_value));
- s1 = atk_table_get_row_description (ATK_TABLE (accessible), i);
- emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
- DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
- }
- else if (strcmp (pname, "accessible-table-column-description") == 0)
- {
- i = g_value_get_int (&(values->new_value));
- s1 = atk_table_get_column_description (ATK_TABLE (accessible), i);
- emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
- DBUS_TYPE_STRING_AS_STRING, s1, append_basic);
- }
- else if (strcmp (pname, "accessible-table-caption-object") == 0)
- {
- otemp = atk_table_get_caption (ATK_TABLE (accessible));
- emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
- "(so)", otemp, append_object);
- }
- else
- {
- emit_event (accessible, ITF_EVENT_OBJECT, PCHANGE, pname, 0, 0,
- DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
- }
- return TRUE;
-}
-
-/*---------------------------------------------------------------------------*/
-
-#define STATE_CHANGED "state-changed"
-
-/*
- * The state event listener handles 'Gtk:AtkObject:state-change' ATK signals
- * and forwards them as object:state-changed:(param-name) AT-SPI events. Where
- * the param-name is part of the ATK state-change signal.
- */
-static gboolean
-state_event_listener (GSignalInvocationHint * signal_hint,
- guint n_param_values,
- const GValue * param_values, gpointer data)
-{
- AtkObject *accessible;
- const gchar *pname;
- guint detail1;
-
- accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
- pname = g_value_get_string (¶m_values[1]);
-
- detail1 = (g_value_get_boolean (¶m_values[2])) ? 1 : 0;
- emit_event (accessible, ITF_EVENT_OBJECT, STATE_CHANGED, pname, detail1, 0,
- DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
-
- if (!g_strcmp0 (pname, "defunct") && detail1)
- spi_register_deregister_object (spi_global_register, G_OBJECT (accessible),
- TRUE);
- return TRUE;
-}
-
-/*---------------------------------------------------------------------------*/
-
-/*
- * The window event listener handles the following ATK signals and forwards
- * them as AT-SPI events:
- *
- * window:create -> window:create
- * window:destroy -> window:destroy
- * window:minimize -> window:minimize
- * window:maximize -> window:maximize
- * window:activate -> window:activate
- * window:deactivate -> window:deactivate
- */
-static gboolean
-window_event_listener (GSignalInvocationHint * signal_hint,
- guint n_param_values,
- const GValue * param_values, gpointer data)
-{
- AtkObject *accessible;
- GSignalQuery signal_query;
- const gchar *name, *s;
-
- g_signal_query (signal_hint->signal_id, &signal_query);
- name = signal_query.signal_name;
-
- accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
- s = atk_object_get_name (accessible);
- emit_event (accessible, ITF_EVENT_WINDOW, name, "", 0, 0,
- DBUS_TYPE_STRING_AS_STRING, s, append_basic);
-
- return TRUE;
-}
-
-/*---------------------------------------------------------------------------*/
-
-/*
- * The document event listener handles the following ATK signals
- * and converts them to AT-SPI events:
- *
- * Gtk:AtkDocument:load-complete -> document:load-complete
- * Gtk:AtkDocument:load-stopped -> document:load-stopped
- * Gtk:AtkDocument:reload -> document:reload
- * Gtk:AtkDocument:page-changed -> document:page-changed
- */
-static gboolean
-document_event_listener (GSignalInvocationHint * signal_hint,
- guint n_param_values,
- const GValue * param_values, gpointer data)
-{
- AtkObject *accessible;
- GSignalQuery signal_query;
- const gchar *name, *s;
- gint detail1 = 0;
-
- g_signal_query (signal_hint->signal_id, &signal_query);
- name = signal_query.signal_name;
-
- if (n_param_values > 0) // on the case of page-changed
- if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
- detail1 = g_value_get_int (¶m_values[1]);
-
- accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
- s = atk_object_get_name (accessible);
- emit_event (accessible, ITF_EVENT_DOCUMENT, name, "", detail1, 0,
- DBUS_TYPE_STRING_AS_STRING, s, append_basic);
-
- return TRUE;
-}
-
-/*---------------------------------------------------------------------------*/
-
-/*
- * Signal handler for "Gtk:AtkComponent:bounds-changed". Converts
- * this to an AT-SPI event - "object:bounds-changed".
- */
-static gboolean
-bounds_event_listener (GSignalInvocationHint * signal_hint,
- guint n_param_values,
- const GValue * param_values, gpointer data)
-{
- AtkObject *accessible;
- AtkRectangle *atk_rect;
- GSignalQuery signal_query;
- const gchar *name;
-
- g_signal_query (signal_hint->signal_id, &signal_query);
- name = signal_query.signal_name;
-
- accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
-
- if (G_VALUE_HOLDS_BOXED (param_values + 1))
- {
- atk_rect = g_value_get_boxed (param_values + 1);
-
- emit_event (accessible, ITF_EVENT_OBJECT, name, "", 0, 0,
- "(iiii)", atk_rect, append_rect);
- }
- return TRUE;
-}
-
-/*---------------------------------------------------------------------------*/
-
-/*
- * Handles the ATK signal 'Gtk:AtkObject:active-descendant-changed' and
- * converts it to the AT-SPI signal - 'object:active-descendant-changed'.
- *
- */
-static gboolean
-active_descendant_event_listener (GSignalInvocationHint * signal_hint,
- guint n_param_values,
- const GValue * param_values, gpointer data)
-{
- AtkObject *accessible;
- AtkObject *child;
- GSignalQuery signal_query;
- const gchar *name;
- gint detail1;
-
- g_signal_query (signal_hint->signal_id, &signal_query);
- name = signal_query.signal_name;
-
- accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
- child = ATK_OBJECT (g_value_get_pointer (¶m_values[1]));
- g_return_val_if_fail (ATK_IS_OBJECT (child), TRUE);
-
- detail1 = atk_object_get_index_in_parent (child);
-
- emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, 0,
- "(so)", child, append_object);
- return TRUE;
-}
-
-/*---------------------------------------------------------------------------*/
-
-/*
- * Handles the ATK signal 'Gtk:AtkHypertext:link-selected' and
- * converts it to the AT-SPI signal - 'object:link-selected'
- *
- */
-static gboolean
-link_selected_event_listener (GSignalInvocationHint * signal_hint,
- guint n_param_values,
- const GValue * param_values, gpointer data)
-{
- AtkObject *accessible;
- GSignalQuery signal_query;
- const gchar *name, *minor;
- gint detail1 = 0;
-
- g_signal_query (signal_hint->signal_id, &signal_query);
- name = signal_query.signal_name;
-
- accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
- minor = g_quark_to_string (signal_hint->detail);
-
- if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
- detail1 = g_value_get_int (¶m_values[1]);
-
- emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, 0,
- DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
- return TRUE;
-}
-
-/*---------------------------------------------------------------------------*/
-
-/*
- * Handles the ATK signal 'Gtk:AtkText:text-changed' and
- * converts it to the AT-SPI signal - 'object:text-changed'
- * This signal is deprecated by Gtk:AtkText:text-insert
- * and Gtk:AtkText:text-remove
- *
- */
-static gboolean
-text_changed_event_listener (GSignalInvocationHint * signal_hint,
- guint n_param_values,
- const GValue * param_values, gpointer data)
-{
- AtkObject *accessible;
- GSignalQuery signal_query;
- const gchar *name, *minor;
- gchar *selected;
- gint detail1 = 0, detail2 = 0;
-
- g_signal_query (signal_hint->signal_id, &signal_query);
- name = signal_query.signal_name;
-
- accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
- minor = g_quark_to_string (signal_hint->detail);
-
- if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
- detail1 = g_value_get_int (¶m_values[1]);
-
- if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
- detail2 = g_value_get_int (¶m_values[2]);
-
- selected =
- atk_text_get_text (ATK_TEXT (accessible), detail1, detail1 + detail2);
-
- emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
- DBUS_TYPE_STRING_AS_STRING, selected, append_basic);
- g_free (selected);
-
- return TRUE;
-}
-
-/*
- * Handles the ATK signal 'Gtk:AtkText:text-insert' and
- * converts it to the AT-SPI signal - 'object:text-changed'
- *
- */
-static gboolean
-text_insert_event_listener (GSignalInvocationHint * signal_hint,
- guint n_param_values,
- const GValue * param_values, gpointer data)
-{
- AtkObject *accessible;
- guint text_changed_signal_id;
- GSignalQuery signal_query;
- const gchar *name;
- const gchar *minor_raw, *text;
- gchar *minor;
- gint detail1 = 0, detail2 = 0;
-
- accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
- /* Get signal name for 'Gtk:AtkText:text-changed' so
- * we convert it to the AT-SPI signal - 'object:text-changed'
- */
- text_changed_signal_id = g_signal_lookup ("text-changed", G_OBJECT_TYPE (accessible));
- g_signal_query (text_changed_signal_id, &signal_query);
- name = signal_query.signal_name;
-
-
- /* Add the insert and keep any detail coming from atk */
- minor_raw = g_quark_to_string (signal_hint->detail);
- if (minor_raw)
- minor = g_strconcat ("insert:", minor_raw, NULL);
- else
- minor = g_strdup ("insert");
-
- if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
- detail1 = g_value_get_int (¶m_values[1]);
-
- if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
- detail2 = g_value_get_int (¶m_values[2]);
-
- if (G_VALUE_TYPE (¶m_values[3]) == G_TYPE_STRING)
- text = g_value_get_string (¶m_values[3]);
- else
- text = "";
-
- emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
- DBUS_TYPE_STRING_AS_STRING, text, append_basic);
- g_free (minor);
- return TRUE;
-}
-
-/*
- * Handles the ATK signal 'Gtk:AtkText:text-remove' and
- * converts it to the AT-SPI signal - 'object:text-changed'
- *
- */
-static gboolean
-text_remove_event_listener (GSignalInvocationHint * signal_hint,
- guint n_param_values,
- const GValue * param_values, gpointer data)
-{
- AtkObject *accessible;
- guint text_changed_signal_id;
- GSignalQuery signal_query;
- const gchar *name;
- const gchar *minor_raw, *text;
- gchar *minor;
- gint detail1 = 0, detail2 = 0;
-
- accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
- /* Get signal name for 'Gtk:AtkText:text-changed' so
- * we convert it to the AT-SPI signal - 'object:text-changed'
- */
- text_changed_signal_id = g_signal_lookup ("text-changed", G_OBJECT_TYPE (accessible));
- g_signal_query (text_changed_signal_id, &signal_query);
- name = signal_query.signal_name;
-
- minor_raw = g_quark_to_string (signal_hint->detail);
-
- /* Add the delete and keep any detail coming from atk */
- if (minor_raw)
- minor = g_strconcat ("delete:", minor_raw, NULL);
- else
- minor = g_strdup ("delete");
-
- if (G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
- detail1 = g_value_get_int (¶m_values[1]);
-
- if (G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
- detail2 = g_value_get_int (¶m_values[2]);
-
- if (G_VALUE_TYPE (¶m_values[3]) == G_TYPE_STRING)
- text = g_value_get_string (¶m_values[3]);
- else
- text = "";
-
- emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
- DBUS_TYPE_STRING_AS_STRING, text, append_basic);
- g_free (minor);
- return TRUE;
-}
-
-
-/*---------------------------------------------------------------------------*/
-
-/*
- * Handles the ATK signal 'Gtk:AtkText:text-selection-changed' and
- * converts it to the AT-SPI signal - 'object:text-selection-changed'
- *
- */
-static gboolean
-text_selection_changed_event_listener (GSignalInvocationHint * signal_hint,
- guint n_param_values,
- const GValue * param_values,
- gpointer data)
-{
- AtkObject *accessible;
- GSignalQuery signal_query;
- const gchar *name, *minor;
-
- g_signal_query (signal_hint->signal_id, &signal_query);
- name = signal_query.signal_name;
-
- accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
- minor = g_quark_to_string (signal_hint->detail);
-
- emit_event (accessible, ITF_EVENT_OBJECT, name, minor, 0, 0,
- DBUS_TYPE_STRING_AS_STRING, "", append_basic);
- return TRUE;
-}
-
-/*---------------------------------------------------------------------------*/
-
-/*
- * Children changed signal converter and forwarder.
- *
- * Klass (Interface) org.a11y.atspi.Event.Object
- * Major is the signal name.
- * Minor is 'add' or 'remove'
- * detail1 is the index.
- * detail2 is 0.
- * any_data is the child reference.
- */
-static gboolean
-children_changed_event_listener (GSignalInvocationHint * signal_hint,
- guint n_param_values,
- const GValue * param_values, gpointer data)
-{
- GSignalQuery signal_query;
- const gchar *name, *minor;
- gint detail1 = 0, detail2 = 0;
-
- AtkObject *accessible, *ao=NULL;
- gpointer child;
- AtkStateSet *set;
- gboolean ret;
-
- g_signal_query (signal_hint->signal_id, &signal_query);
- name = signal_query.signal_name;
-
- /* If the accessible is on STATE_MANAGES_DESCENDANTS state,
- children-changed signal are not forwarded. */
- accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
- set = atk_object_ref_state_set (accessible);
- ret = atk_state_set_contains_state (set, ATK_STATE_MANAGES_DESCENDANTS);
- g_object_unref (set);
-
- if (ret)
- return TRUE;
-
- minor = g_quark_to_string (signal_hint->detail);
-
- detail1 = g_value_get_uint (param_values + 1);
- child = g_value_get_pointer (param_values + 2);
-
- if (ATK_IS_OBJECT (child))
- {
- ao = ATK_OBJECT (child);
- emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
- "(so)", ao, append_object);
- }
- else if ((minor != NULL) && (strcmp (minor, "add") == 0))
- {
- ao = atk_object_ref_accessible_child (accessible,
- detail1);
- emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
- "(so)", ao, append_object);
- g_object_unref (ao);
- }
- else
- {
- emit_event (accessible, ITF_EVENT_OBJECT, name, minor, detail1, detail2,
- "(so)", ao, append_object);
- }
-
- return TRUE;
-}
-
-/*---------------------------------------------------------------------------*/
-
-/*
- * Generic signal converter and forwarder.
- *
- * Klass (Interface) org.a11y.atspi.Event.Object
- * Major is the signal name.
- * Minor is NULL.
- * detail1 is 0.
- * detail2 is 0.
- * any_data is NULL.
- */
-static gboolean
-generic_event_listener (GSignalInvocationHint * signal_hint,
- guint n_param_values,
- const GValue * param_values, gpointer data)
-{
- AtkObject *accessible;
- GSignalQuery signal_query;
- const gchar *name;
- int detail1 = 0, detail2 = 0;
-
- g_signal_query (signal_hint->signal_id, &signal_query);
- name = signal_query.signal_name;
-
- accessible = ATK_OBJECT (g_value_get_object (¶m_values[0]));
-
- if (n_param_values > 1 && G_VALUE_TYPE (¶m_values[1]) == G_TYPE_INT)
- detail1 = g_value_get_int (¶m_values[1]);
-
- if (n_param_values > 2 && G_VALUE_TYPE (¶m_values[2]) == G_TYPE_INT)
- detail2 = g_value_get_int (¶m_values[2]);
-
- emit_event (accessible, ITF_EVENT_OBJECT, name, "", detail1, detail2,
- DBUS_TYPE_INT32_AS_STRING, 0, append_basic);
- return TRUE;
-}
-
-/*---------------------------------------------------------------------------*/
-
-/*
- * Registers the provided function as a handler for the given signal name
- * and stores the signal id returned so that the function may be
- * de-registered later.
- */
-static guint
-add_signal_listener (GSignalEmissionHook listener, const char *signal_name)
-{
- guint id;
-
- id = atk_add_global_event_listener (listener, signal_name);
-
- if (id > 0) /* id == 0 is a failure */
- g_array_append_val (listener_ids, id);
-
- return id;
-}
-
-/*
- * Initialization for the signal handlers.
- *
- * Registers all required signal handlers.
- */
-void
-spi_atk_register_event_listeners (void)
-{
- /*
- * Kludge to make sure the Atk interface types are registered, otherwise
- * the AtkText signal handlers below won't get registered
- */
- GObject *ao = g_object_new (ATK_TYPE_OBJECT, NULL);
- AtkObject *bo = atk_no_op_object_new (ao);
- guint id = 0;
-
- g_object_unref (G_OBJECT (bo));
- g_object_unref (ao);
-
- if (listener_ids)
- {
- g_warning ("atk_bridge: spi_atk-register_event_listeners called multiple times");
- return;
- }
-
- /* Register for focus event notifications, and register app with central registry */
- listener_ids = g_array_sized_new (FALSE, TRUE, sizeof (guint), 16);
-
- atk_bridge_focus_tracker_id = atk_add_focus_tracker (focus_tracker);
-
- add_signal_listener (property_event_listener,
- "Gtk:AtkObject:property-change");
-
- /* window events: we tentative try to register using the old format */
- id = add_signal_listener (window_event_listener, "window:create");
-
- if (id != 0)
- {
- /* If we are able to register using the old format, we assume
- * that the ATK implementor is managing window events without
- * AtkWindow. We can't use the opposite test because after
- * including AtkWindow on ATK you would be able to register to
- * that event, although the ATK implementor could or not use it.
- */
-
- add_signal_listener (window_event_listener, "window:destroy");
- add_signal_listener (window_event_listener, "window:minimize");
- add_signal_listener (window_event_listener, "window:maximize");
- add_signal_listener (window_event_listener, "window:restore");
- add_signal_listener (window_event_listener, "window:activate");
- add_signal_listener (window_event_listener, "window:deactivate");
- }
- else
- {
- add_signal_listener (window_event_listener, "Atk:AtkWindow:create");
- add_signal_listener (window_event_listener, "Atk:AtkWindow:destroy");
- add_signal_listener (window_event_listener, "Atk:AtkWindow:minimize");
- add_signal_listener (window_event_listener, "Atk:AtkWindow:maximize");
- add_signal_listener (window_event_listener, "Atk:AtkWindow:restore");
- add_signal_listener (window_event_listener, "Atk:AtkWindow:activate");
- add_signal_listener (window_event_listener, "Atk:AtkWindow:deactivate");
- }
-
- add_signal_listener (document_event_listener,
- "Gtk:AtkDocument:load-complete");
- add_signal_listener (document_event_listener, "Gtk:AtkDocument:reload");
- add_signal_listener (document_event_listener,
- "Gtk:AtkDocument:load-stopped");
- add_signal_listener (document_event_listener,
- "Gtk:AtkDocument:page-changed");
- /* TODO Fake this event on the client side */
- add_signal_listener (state_event_listener, "Gtk:AtkObject:state-change");
- /* TODO */
- add_signal_listener (active_descendant_event_listener,
- "Gtk:AtkObject:active-descendant-changed");
- add_signal_listener (bounds_event_listener,
- "Gtk:AtkComponent:bounds-changed");
- add_signal_listener (text_selection_changed_event_listener,
- "Gtk:AtkText:text-selection-changed");
- add_signal_listener (text_changed_event_listener,
- "Gtk:AtkText:text-changed");
- add_signal_listener (text_insert_event_listener,
- "Gtk:AtkText:text-insert");
- add_signal_listener (text_remove_event_listener,
- "Gtk:AtkText:text-remove");
- add_signal_listener (link_selected_event_listener,
- "Gtk:AtkHypertext:link-selected");
- add_signal_listener (generic_event_listener,
- "Gtk:AtkObject:visible-data-changed");
- add_signal_listener (generic_event_listener,
- "Gtk:AtkSelection:selection-changed");
- add_signal_listener (generic_event_listener,
- "Gtk:AtkText:text-attributes-changed");
- add_signal_listener (generic_event_listener,
- "Gtk:AtkText:text-caret-moved");
- add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-inserted");
- add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-reordered");
- add_signal_listener (generic_event_listener, "Gtk:AtkTable:row-deleted");
- add_signal_listener (generic_event_listener,
- "Gtk:AtkTable:column-inserted");
- add_signal_listener (generic_event_listener,
- "Gtk:AtkTable:column-reordered");
- add_signal_listener (generic_event_listener, "Gtk:AtkTable:column-deleted");
- add_signal_listener (generic_event_listener, "Gtk:AtkTable:model-changed");
- add_signal_listener (children_changed_event_listener, "Gtk:AtkObject:children-changed");
-
-#if 0
- g_signal_connect (G_OBJECT (spi_global_app_data->root),
- "children-changed::add",
- (GCallback) toplevel_added_event_listener, NULL);
-
- g_signal_connect (G_OBJECT (spi_global_app_data->root),
- "children-changed::remove",
- (GCallback) toplevel_removed_event_listener, NULL);
-#endif
-
- /*
- * May add the following listeners to implement preemptive key listening for GTK+
- *
- * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-press-event");
- * atk_add_global_event_listener (spi_atk_bridge_widgetkey_listener, "Gtk:GtkWidget:key-release-event");
- */
- atk_bridge_key_event_listener_id =
- atk_add_key_event_listener (spi_atk_bridge_key_listener, NULL);
-}
-
-/*---------------------------------------------------------------------------*/
-
-/*
- * De-registers all ATK signal handlers.
- */
-void
-spi_atk_deregister_event_listeners (void)
-{
- gint i;
- GArray *ids = listener_ids;
- listener_ids = NULL;
-
- if (atk_bridge_focus_tracker_id)
- {
- atk_remove_focus_tracker (atk_bridge_focus_tracker_id);
- atk_bridge_focus_tracker_id = 0;
- }
-
- if (ids)
- {
- for (i = 0; i < ids->len; i++)
- {
- atk_remove_global_event_listener (g_array_index (ids, guint, i));
- }
- g_array_free (ids, TRUE);
- }
-
- if (atk_bridge_key_event_listener_id)
- {
- atk_remove_key_event_listener (atk_bridge_key_event_listener_id);
- atk_bridge_key_event_listener_id = 0;
- }
-}
-
-/*---------------------------------------------------------------------------*/
-
-/*
- * TODO This function seems out of place here.
- *
- * Emits fake deactivate signals on all top-level windows.
- * Used when shutting down AT-SPI, ensuring that all
- * windows have been removed on the client side.
- */
-void
-spi_atk_tidy_windows (void)
-{
- AtkObject *root;
- gint n_children;
- gint i;
-
- root = atk_get_root ();
- n_children = atk_object_get_n_accessible_children (root);
- for (i = 0; i < n_children; i++)
- {
- AtkObject *child;
- AtkStateSet *stateset;
- const gchar *name;
-
- child = atk_object_ref_accessible_child (root, i);
- stateset = atk_object_ref_state_set (child);
-
- name = atk_object_get_name (child);
- if (atk_state_set_contains_state (stateset, ATK_STATE_ACTIVE))
- {
- emit_event (child, ITF_EVENT_WINDOW, "deactivate", NULL, 0, 0,
- DBUS_TYPE_STRING_AS_STRING, name, append_basic);
- }
- g_object_unref (stateset);
-
- emit_event (child, ITF_EVENT_WINDOW, "destroy", NULL, 0, 0,
- DBUS_TYPE_STRING_AS_STRING, name, append_basic);
- g_object_unref (child);
- }
-}
-
-gboolean
-spi_event_is_subtype (gchar **needle, gchar **haystack)
-{
- while (*haystack && **haystack)
- {
- if (g_strcmp0 (*needle, *haystack))
- return FALSE;
- needle++;
- haystack++;
- }
- return TRUE;
-}
-
-/*END------------------------------------------------------------------------*/