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 #include <cspi/spi-private.h>
27 * Global functions serviced by the registry
32 /* static stuff used only by registry C bindings */
33 static GList *key_listeners = NULL;
34 static Display *display = NULL;
38 * registerGlobalEventListener:
39 * @listener: the #AccessibleEventListener to be registered against an
41 * @eventType: a character string indicating the type of events for which
42 * notification is requested. Format is
43 * EventClass:major_type:minor_type:detail
44 * where all subfields other than EventClass are optional.
45 * EventClasses include "object", "window", "mouse",
46 * and toolkit events (e.g. "Gtk", "AWT").
47 * Examples: "focus:", "Gtk:GtkWidget:button_press_event".
49 * Legal object event types:
51 * (property change events)
53 * object:property-change
54 * object:property-change:accessible-name
55 * object:property-change:accessible-state
56 * object:property-change:accessible-description
57 * object:property-change:accessible-parent
58 * object:property-change:accessible-value
59 * object:property-change:accessible-role
60 * object:property-change:accessible-table-caption
61 * object:property-change:accessible-table-column-description
62 * object:property-change:accessible-table-column-header
63 * object:property-change:accessible-table-row-description
64 * object:property-change:accessible-table-row-header
65 * object:property-change:accessible-table-summary
67 * (other object events)
69 * object:children-changed
70 * object:visible-data-changed
71 * object:selection-changed
72 * object:text-selection-changed
74 * object:text-caret-moved
76 * object:row-reordered
78 * object:column-inserted
79 * object:column-reordered
80 * object:column-deleted
81 * object:model-changed
83 * NOTE: this string may be UTF-8, but should not contain byte value 56
84 * (ascii ':'), except as a delimiter, since non-UTF-8 string
85 * delimiting functions are used internally.
86 * In general, listening to
87 * toolkit-specific events is not recommended.
89 * Add an in-process callback function to an existing AccessibleEventListener.
91 * Returns: #TRUE if successful, otherwise #FALSE.
95 registerGlobalEventListener (AccessibleEventListener *listener,
100 Accessibility_Registry_registerGlobalEventListener (
102 (Accessibility_EventListener)
103 bonobo_object_corba_objref (bonobo_object (listener)),
107 retval = !cspi_exception ();
113 * deregisterGlobalEventListenerAll:
114 * @listener: the #AccessibleEventListener to be registered against
117 * deregisters an AccessibleEventListener from the registry, for all
118 * event types it may be listening to. Also unrefs the listener.
119 * The listener cannot subsequently be reused.
121 * Returns: #TRUE if successful, otherwise #FALSE.
125 deregisterGlobalEventListenerAll (AccessibleEventListener *listener)
127 Accessibility_Registry_deregisterGlobalEventListenerAll (
129 (Accessibility_EventListener)
130 CORBA_Object_duplicate (
131 bonobo_object_corba_objref (
132 bonobo_object (listener)), cspi_ev ()),
134 if (!cspi_exception ())
136 bonobo_object_unref (BONOBO_OBJECT (listener));
137 /* Would prefer that this were not a bonobo object: g_object_unref (listener);*/
140 return !cspi_exception ();
143 * deregisterGlobalEventListener:
144 * @listener: the #AccessibleEventListener registered against an event type.
145 * @eventType: a string specifying the event type for which this
146 * listener is to be deregistered.
148 * deregisters an AccessibleEventListener from the registry, for a specific
151 * Returns: #TRUE if successful, otherwise #FALSE.
155 deregisterGlobalEventListener (AccessibleEventListener *listener,
158 Accessibility_Registry_deregisterGlobalEventListener (
160 (Accessibility_EventListener)
161 CORBA_Object_duplicate (
162 bonobo_object_corba_objref (bonobo_object (listener)), cspi_ev ()),
163 (CORBA_char *) eventType,
166 return !cspi_exception ();
172 * Get the number of virtual desktops.
173 * NOTE: currently multiple virtual desktops are not implemented, this
174 * function always returns '1'.
176 * Returns: an integer indicating the number of active virtual desktops.
182 return Accessibility_Registry_getDesktopCount (cspi_registry (), cspi_ev ());
187 * @i: an integer indicating which of the accessible desktops is to be returned.
189 * Get the virtual desktop indicated by index @i.
190 * NOTE: currently multiple virtual desktops are not implemented, this
191 * function always returns '1'.
193 * Returns: a pointer to the 'i-th' virtual desktop's #Accessible representation.
199 return cspi_object_add (Accessibility_Registry_getDesktop (cspi_registry (),
206 * @list: a pointer to an array of #Accessible objects.
208 * Get the list of virtual desktops. On return, @list will point
209 * to a newly-created array of virtual desktop pointers.
210 * It is the responsibility of the caller to free this array when
211 * it is no longer needed.
213 * Not Yet Implemented : this implementation always returns a single
214 * #Accessible desktop.
216 * Returns: an integer indicating how many virtual desktops have been
217 * placed in the list pointed to by parameter @list.
220 getDesktopList (Accessible **list)
228 key_event_source_func (void *p)
230 GList *listeners = (GList *)p;
231 XEvent *x_event = g_new0 (XEvent, 1);
232 while (XPending (display))
234 XNextEvent (display, x_event);
237 /* if the listener mask matches, notify it*/
249 * registerAccessibleKeystrokeListener:
250 * @listener: a pointer to the #AccessibleKeystrokeListener for which
251 * keystroke events are requested.
252 * @keys: a pointer to the #AccessibleKeySet indicating which
253 * keystroke events are requested, or #CSPI_KEYSET_ALL_KEYS.
254 * @modmask: an #AccessibleKeyMaskType mask indicating which
255 * key event modifiers must be set in combination with @keys,
256 * events will only be reported for key events for which all
257 * modifiers in @modmask are set. If you wish to listen for
258 * events with multiple modifier combinations you must call
259 * registerAccessibleKeystrokeListener() once for each combination.
260 * @eventmask: an #AccessibleKeyMaskType mask indicating which
261 * types of key events are requested (#SPI_KEY_PRESSED, etc.).
262 * @sync_type: a #AccessibleKeyListenerSyncType parameter indicating
263 * the behavior of the notification/listener transaction.
265 * Register a listener for keystroke events, either pre-emptively for
266 * all windows (CSPI_KEYLISTENER_ALL_WINDOWS), or
267 * non-preemptively (CSPI_KEYLISTENER_NOSYNC).
268 * ( Other sync_type values may be available in the future.)
271 registerAccessibleKeystrokeListener (AccessibleKeystrokeListener *listener,
272 AccessibleKeySet *keys,
273 AccessibleKeyMaskType modmask,
274 AccessibleKeyEventMask eventmask,
275 AccessibleKeyListenerSyncType sync_type)
277 Accessibility_ControllerEventMask *controller_event_mask =
278 Accessibility_ControllerEventMask__alloc();
279 Accessibility_DeviceEventController device_event_controller =
280 Accessibility_Registry_getDeviceEventController (cspi_registry (), cspi_ev ());
281 Accessibility_KeySet *key_set = Accessibility_KeySet__alloc();
282 Accessibility_KeyEventTypeSeq *key_events = Accessibility_KeyEventTypeSeq__alloc();
283 Accessibility_KeystrokeListener cspi_listener_corba_ref;
285 Accessibility_DeviceEventController_ref (device_event_controller, cspi_ev ());
287 /* copy the keyval filter values from the C api into the CORBA KeySet */
290 key_set->_buffer = Accessibility_KeySet_allocbuf (
291 (unsigned long) keys->len);
292 key_set->_length = (unsigned long) keys->len;
293 for (i=0; i < key_set->_length; ++i)
295 /* we overload the keyset long w/keycodes, the - bit acts as a flag */
296 key_set->_buffer[i] = (keys->keysyms[i]) ? keys->keysyms[i] :
298 /* g_print ("key-set %d = %d\n", i, (int) key_set->_buffer[i]); */
301 /* copy the event filter values from the C api into the CORBA KeyEventTypeSeq */
306 if (mask & eventmask) ++i;
308 } while (mask & 0xFFFF);
310 key_events->_buffer = Accessibility_KeyEventTypeSeq_allocbuf (i);
312 if (eventmask & SPI_KEY_PRESSED)
314 key_events->_buffer[i++] = Accessibility_KEY_PRESSED;
316 if (eventmask & SPI_KEY_RELEASED)
318 key_events->_buffer[i++] = Accessibility_KEY_RELEASED;
320 key_events->_length = i;
322 controller_event_mask->value = (CORBA_unsigned_long) modmask;
323 controller_event_mask->refcount = (CORBA_unsigned_short) 1;
325 cspi_listener_corba_ref = (Accessibility_KeystrokeListener)
326 CORBA_Object_duplicate (bonobo_object_corba_objref (bonobo_object (listener)), cspi_ev ());
328 Accessibility_DeviceEventController_registerKeystrokeListener (
329 device_event_controller,
330 cspi_listener_corba_ref,
332 controller_event_mask,
334 (CORBA_boolean) ((sync_type & SPI_KEYLISTENER_ALL_WINDOWS)!=0),
339 * deregisterAccessibleKeystrokeListener:
340 * @listener: a pointer to the #AccessibleKeystrokeListener for which
341 * keystroke events are requested.
342 * @modmask: the key modifier mask for which this listener is to be
343 * 'deregistered' (of type #AccessibleeyMaskType).
345 * Removes a keystroke event listener from the registry's listener queue,
346 * ceasing notification of events with modifiers matching @modmask.
349 deregisterAccessibleKeystrokeListener (AccessibleKeystrokeListener *listener,
350 AccessibleKeyMaskType modmask)
352 Accessibility_ControllerEventMask *controller_event_mask =
353 Accessibility_ControllerEventMask__alloc();
354 Accessibility_DeviceEventController device_event_controller =
355 Accessibility_Registry_getDeviceEventController (cspi_registry (), cspi_ev ());
356 Accessibility_KeySet *all_keys = Accessibility_KeySet__alloc();
357 Accessibility_KeyEventTypeSeq *key_events = Accessibility_KeyEventTypeSeq__alloc();
358 Accessibility_KeystrokeListener cspi_listener_corba_ref;
359 Accessibility_DeviceEventController_unref (device_event_controller, cspi_ev ());
360 controller_event_mask->value = (CORBA_unsigned_long) modmask;
361 controller_event_mask->refcount = (CORBA_unsigned_short) 1;
363 cspi_listener_corba_ref = (Accessibility_KeystrokeListener)
364 CORBA_Object_duplicate (BONOBO_OBJREF(listener), cspi_ev ());
366 Accessibility_DeviceEventController_deregisterKeystrokeListener (
367 device_event_controller,
368 cspi_listener_corba_ref,
370 controller_event_mask,
372 (CORBA_boolean) TRUE,
378 * @keyval: a long integer indicating the keycode or keysym of the key event
380 * @synth_type: a #AccessibleKeySynthType flag indicating whether @keyval
381 * is to be interpreted as a keysym rather than a keycode
382 * (CSPI_KEYSYM), or whether to synthesize
383 * SPI_KEY_PRESS, SPI_KEY_RELEASE, or both (SPI_KEY_PRESSRELEASE).
385 * Synthesize a keyboard event (as if a hardware keyboard event occurred in the
386 * current UI context).
390 generateKeyEvent (long int keyval, AccessibleKeySynthType synth_type)
392 /* TODO: check current modifier status and
393 * send keycode to alter, if necessary
395 Accessibility_DeviceEventController device_event_controller =
396 Accessibility_Registry_getDeviceEventController (cspi_registry (), cspi_ev ());
397 Accessibility_DeviceEventController_generateKeyEvent (device_event_controller,
399 (unsigned long) synth_type,
404 * generateMouseEvent:
405 * @x: a #long indicating the screen x coordinate of the mouse event.
406 * @y: a #long indicating the screen y coordinate of the mouse event.
407 * @name: a string indicating which mouse event to be synthesized
408 * (e.g. "button1", "button2", "mousemove").
410 * Synthesize a mouse event at a specific screen coordinate.
411 * Most AT clients should use the #AccessibleAction interface when
412 * tempted to generate mouse events, rather than this method.
413 * Not Yet Implemented.
417 generateMouseEvent (long x, long y, char *name)