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 /* spi_registry.c: Global functions wrapping the registry */
25 #include <cspi/spi-private.h>
28 * SPI_registerGlobalEventListener:
29 * @listener: the #AccessibleEventListener to be registered against an
31 * @eventType: a character string indicating the type of events for which
32 * notification is requested. Format is
33 * EventClass:major_type:minor_type:detail
34 * where all subfields other than EventClass are optional.
35 * EventClasses include "object", "window", "mouse",
36 * and toolkit events (e.g. "Gtk", "AWT").
37 * Examples: "focus:", "Gtk:GtkWidget:button_press_event".
39 * Legal object event types:
41 * (property change events)
43 * object:property-change
44 * object:property-change:accessible-name
45 * object:property-change:accessible-state
46 * object:property-change:accessible-description
47 * object:property-change:accessible-parent
48 * object:property-change:accessible-value
49 * object:property-change:accessible-role
50 * object:property-change:accessible-table-caption
51 * object:property-change:accessible-table-column-description
52 * object:property-change:accessible-table-column-header
53 * object:property-change:accessible-table-row-description
54 * object:property-change:accessible-table-row-header
55 * object:property-change:accessible-table-summary
57 * (other object events)
59 * object:children-changed
60 * object:visible-data-changed
61 * object:selection-changed
62 * object:text-selection-changed
64 * object:text-caret-moved
66 * object:row-reordered
68 * object:column-inserted
69 * object:column-reordered
70 * object:column-deleted
71 * object:model-changed
81 * window:desktop-create
82 * window:desktop-destroy
93 * NOTE: this string may be UTF-8, but should not contain byte value 56
94 * (ascii ':'), except as a delimiter, since non-UTF-8 string
95 * delimiting functions are used internally.
96 * In general, listening to
97 * toolkit-specific events is not recommended.
99 * Add an in-process callback function to an existing AccessibleEventListener.
101 * Returns: #TRUE if successful, otherwise #FALSE.
104 SPI_registerGlobalEventListener (AccessibleEventListener *listener,
105 const char *eventType)
114 Accessibility_Registry_registerGlobalEventListener (
116 cspi_event_listener_get_corba (listener),
117 eventType, cspi_ev ());
119 retval = !cspi_exception ();
125 * SPI_deregisterGlobalEventListenerAll:
126 * @listener: the #AccessibleEventListener to be registered against
129 * deregisters an AccessibleEventListener from the registry, for all
130 * event types it may be listening to. Use
131 * AccessibleEventListener_unref to release the
132 * listener reference.
134 * Returns: #TRUE if successful, otherwise #FALSE.
137 SPI_deregisterGlobalEventListenerAll (AccessibleEventListener *listener)
144 Accessibility_Registry_deregisterGlobalEventListenerAll (
146 cspi_event_listener_get_corba (listener),
149 return !cspi_exception ();
153 * SPI_deregisterGlobalEventListener:
154 * @listener: the #AccessibleEventListener registered against an event type.
155 * @eventType: a string specifying the event type for which this
156 * listener is to be deregistered.
158 * deregisters an AccessibleEventListener from the registry, for a specific
161 * Returns: #TRUE if successful, otherwise #FALSE.
164 SPI_deregisterGlobalEventListener (AccessibleEventListener *listener,
165 const char *eventType)
172 Accessibility_Registry_deregisterGlobalEventListener (
174 cspi_event_listener_get_corba (listener),
175 (CORBA_char *) eventType, cspi_ev ());
177 return !cspi_exception ();
181 * SPI_getDesktopCount:
183 * Get the number of virtual desktops.
184 * NOTE: currently multiple virtual desktops are not implemented, this
185 * function always returns '1'.
187 * Returns: an integer indicating the number of active virtual desktops.
190 SPI_getDesktopCount ()
194 retval = Accessibility_Registry_getDesktopCount (
195 cspi_registry (), cspi_ev ());
197 cspi_return_val_if_ev ("getDesktopCount", -1);
204 * @i: an integer indicating which of the accessible desktops is to be returned.
206 * Get the virtual desktop indicated by index @i.
207 * NOTE: currently multiple virtual desktops are not implemented, this
208 * function always returns '1'.
210 * Returns: a pointer to the 'i-th' virtual desktop's #Accessible representation.
213 SPI_getDesktop (int i)
215 return cspi_object_add (
216 Accessibility_Registry_getDesktop (
217 cspi_registry (), (CORBA_short) i, cspi_ev ()));
221 * SPI_getDesktopList:
222 * @list: a pointer to an array of #Accessible objects.
224 * Get the list of virtual desktops. On return, @list will point
225 * to a newly-created array of virtual desktop pointers.
226 * It is the responsibility of the caller to free this array when
227 * it is no longer needed.
229 * Not Yet Implemented : this implementation always returns a single
230 * #Accessible desktop.
232 * Returns: an integer indicating how many virtual desktops have been
233 * placed in the list pointed to by parameter @list.
236 SPI_getDesktopList (Accessible **list)
243 * SPI_registerAccessibleKeystrokeListener:
244 * @listener: a pointer to the #AccessibleKeystrokeListener for which
245 * keystroke events are requested.
246 * @keys: a pointer to the #AccessibleKeySet indicating which
247 * keystroke events are requested, or #CSPI_KEYSET_ALL_KEYS.
248 * @modmask: an #AccessibleKeyMaskType mask indicating which
249 * key event modifiers must be set in combination with @keys,
250 * events will only be reported for key events for which all
251 * modifiers in @modmask are set. If you wish to listen for
252 * events with multiple modifier combinations you must call
253 * registerAccessibleKeystrokeListener() once for each combination.
254 * @eventmask: an #AccessibleKeyMaskType mask indicating which
255 * types of key events are requested (#SPI_KEY_PRESSED, etc.).
256 * @sync_type: a #AccessibleKeyListenerSyncType parameter indicating
257 * the behavior of the notification/listener transaction.
259 * Register a listener for keystroke events, either pre-emptively for
260 * all windows (CSPI_KEYLISTENER_ALL_WINDOWS), or
261 * non-preemptively (CSPI_KEYLISTENER_NOSYNC).
262 * ( Other sync_type values may be available in the future.)
264 * Returns: #TRUE if successful, otherwise #FALSE.
267 SPI_registerAccessibleKeystrokeListener (AccessibleKeystrokeListener *listener,
268 AccessibleKeySet *keys,
269 AccessibleKeyMaskType modmask,
270 AccessibleKeyEventMask eventmask,
271 AccessibleKeyListenerSyncType sync_type)
274 Accessibility_KeySet key_set;
275 Accessibility_KeyEventTypeSeq key_events;
276 Accessibility_ControllerEventMask controller_event_mask;
277 Accessibility_DeviceEventController device_event_controller;
278 Accessibility_EventListenerMode listener_mode;
285 device_event_controller =
286 Accessibility_Registry_getDeviceEventController (cspi_registry (), cspi_ev ());
288 cspi_return_val_if_ev ("getting event controller", FALSE);
290 /* copy the keyval filter values from the C api into the CORBA KeySet */
293 key_set._length = keys->len;
294 key_set._buffer = Accessibility_KeySet_allocbuf (keys->len);
295 for (i = 0; i < key_set._length; ++i)
297 /* we overload the keyset long w/keycodes, the - bit acts as a flag */
298 key_set._buffer[i] = (keys->keysyms[i]) ? keys->keysyms[i] :
300 /* fprintf (stderr, "key-set %d = %d\n", i, (int) key_set->_buffer[i]); */
306 key_set._buffer = NULL;
309 /* copy the event filter values from the C api into the CORBA KeyEventTypeSeq */
314 if (mask & eventmask)
320 while (mask & 0xFFFF);
322 key_events._buffer = Accessibility_KeyEventTypeSeq_allocbuf (i);
324 if (eventmask & SPI_KEY_PRESSED)
326 key_events._buffer[i++] = Accessibility_KEY_PRESSED;
328 if (eventmask & SPI_KEY_RELEASED)
330 key_events._buffer[i++] = Accessibility_KEY_RELEASED;
332 key_events._length = i;
334 controller_event_mask = (CORBA_unsigned_long) modmask;
336 listener_mode.synchronous =
337 (CORBA_boolean) ((sync_type & SPI_KEYLISTENER_SYNCHRONOUS)!=0);
338 listener_mode.preemptive =
339 (CORBA_boolean) ((sync_type & SPI_KEYLISTENER_CANCONSUME)!=0);
340 listener_mode.global =
341 (CORBA_boolean) ((sync_type & SPI_KEYLISTENER_ALL_WINDOWS)!=0);
343 Accessibility_DeviceEventController_registerKeystrokeListener (
344 device_event_controller,
345 cspi_event_listener_get_corba (listener),
347 controller_event_mask,
352 cspi_return_val_if_ev ("registering keystroke listener", FALSE);
354 cspi_release_unref (device_event_controller);
360 * SPI_deregisterAccessibleKeystrokeListener:
361 * @listener: a pointer to the #AccessibleKeystrokeListener for which
362 * keystroke events are requested.
363 * @modmask: the key modifier mask for which this listener is to be
364 * 'deregistered' (of type #AccessibleeyMaskType).
366 * Removes a keystroke event listener from the registry's listener queue,
367 * ceasing notification of events with modifiers matching @modmask.
369 * Returns: #TRUE if successful, otherwise #FALSE.
372 SPI_deregisterAccessibleKeystrokeListener (AccessibleKeystrokeListener *listener,
373 AccessibleKeyMaskType modmask)
375 Accessibility_ControllerEventMask controller_event_mask;
376 Accessibility_KeySet key_set;
377 Accessibility_KeyEventTypeSeq key_events;
378 Accessibility_DeviceEventController device_event_controller;
385 device_event_controller =
386 Accessibility_Registry_getDeviceEventController (cspi_registry (), cspi_ev ());
388 cspi_return_val_if_ev ("getting keystroke listener", FALSE);
390 controller_event_mask = (CORBA_unsigned_long) modmask;
392 key_events._buffer = NULL;
393 key_events._length = 0;
395 key_set._buffer = NULL;
398 Accessibility_DeviceEventController_deregisterKeystrokeListener (
399 device_event_controller,
400 cspi_event_listener_get_corba (listener),
402 controller_event_mask,
406 cspi_release_unref (device_event_controller);
412 * SPI_generateKeyboardEvent:
413 * @keyval: a long integer indicating the keycode or keysym of the key event
415 * @synth_type: a #AccessibleKeySynthType flag indicating whether @keyval
416 * is to be interpreted as a keysym rather than a keycode
417 * (CSPI_KEYSYM), or whether to synthesize
418 * SPI_KEY_PRESS, SPI_KEY_RELEASE, or both (SPI_KEY_PRESSRELEASE).
420 * Synthesize a keyboard event (as if a hardware keyboard event occurred in the
421 * current UI context).
423 * Returns: #TRUE if successful, otherwise #FALSE.
426 SPI_generateKeyboardEvent (long int keyval,
428 AccessibleKeySynthType synth_type)
430 /* TODO: check current modifier status and
431 * send keycode to alter, if necessary
434 /* TODO: implement keystring use case */
435 Accessibility_KeySynthType keysynth_type;
436 Accessibility_DeviceEventController device_event_controller =
437 Accessibility_Registry_getDeviceEventController (cspi_registry (), cspi_ev ());
439 cspi_return_val_if_ev ("getting event controller for key event gen", FALSE);
444 keysynth_type = Accessibility_KEY_PRESS;
446 case SPI_KEY_RELEASE:
447 keysynth_type = Accessibility_KEY_RELEASE;
449 case SPI_KEY_PRESSRELEASE:
450 keysynth_type = Accessibility_KEY_PRESSRELEASE;
453 keysynth_type = Accessibility_KEY_SYM;
456 keysynth_type = Accessibility_KEY_STRING;
460 Accessibility_DeviceEventController_generateKeyboardEvent (device_event_controller,
466 cspi_return_val_if_ev ("generating keyboard event", FALSE);
468 cspi_release_unref (device_event_controller);
474 * SPI_generateMouseEvent:
475 * @x: a #long indicating the screen x coordinate of the mouse event.
476 * @y: a #long indicating the screen y coordinate of the mouse event.
477 * @name: a string indicating which mouse event to be synthesized
478 * (e.g. "button1", "button2", "mousemove").
480 * Synthesize a mouse event at a specific screen coordinate.
481 * Most AT clients should use the #AccessibleAction interface when
482 * tempted to generate mouse events, rather than this method.
483 * Not Yet Implemented.
485 * Returns: #TRUE if successful, otherwise #FALSE.
488 SPI_generateMouseEvent (long x, long y, char *name)