X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=cspi%2Fspi_event.c;h=bbed8e371d604ad1684cd5d40ff1aafb99b95eca;hb=02b26babf827c0e7a33c6e1c63b9bff0729d3224;hp=60081ac5dfed516a249af4ab2353a14c79da28e7;hpb=e5a9e644107d0a366d8f4036fc8d363a4ff82255;p=platform%2Fcore%2Fuifw%2Fat-spi2-atk.git

diff --git a/cspi/spi_event.c b/cspi/spi_event.c
index 60081ac..bbed8e3 100644
--- a/cspi/spi_event.c
+++ b/cspi/spi_event.c
@@ -1,44 +1,174 @@
+/*
+ * AT-SPI - Assistive Technology Service Provider Interface
+ * (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
+ *
+ * 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 Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <cspi/spi-private.h>
+#include <cspi/bonobo/cspi-bonobo-listener.h>
+
+static GSList *_cspi_event_queue = NULL;
 
 /**
- * createEventListener:
+ * SPI_freeAccessibleKeySet:
+ * @keyset: An AccessibleKeyset to free.
+ *
+ * Release the memory used by an AccessibleKeySet.
+ *
+ **/
+void
+SPI_freeAccessibleKeySet (AccessibleKeySet *keyset)
+{
+  int i = 0;	
+  g_free (keyset->keysyms);
+  g_free (keyset->keycodes);
+  while (keyset->keystrings [i])
+    {
+      g_free (keyset->keystrings [i++]);
+    }
+  g_free (keyset->keystrings);
+  g_free (keyset);
+}
+
+/**
+ * SPI_createAccessibleKeySet:
+ * @len: the number of key values in the key set.
+ * @keysyms: a UTF-8 string containing symbolic key values to be matched, or NULL if
+ *           matching is performed against other key values instead.
+ * @keycodes: an array of unsigned short values which are the hardware keycodes
+ *           to be matched, or NULL if the keyset is specified solely by keysyms
+ *           and/or keystrings.
+ * @keystrings: an array of null-terminated character strings which specify key
+ *             name values to match, or NULL if the keyset is specified solely by
+ *             keycodes and/or keysyms.
+ *
+ * Create a new #AccessibleKeySet of a specified length.
+ * A KeySet is used typically to match key event values, and a matches are made
+ * using the following criteria: a match exists with a key event if all non-null
+ * i-th members of the keyset match the key event.
+ * If both keystring and keysym values are NULL, a keycode value match is
+ * forced, thus the match for keysym=0, keycode=0, keystring=NULL is
+ * keycode 0.
+ *
+ * Returns: a pointer to a newly-created #AccessibleKeySet.
+ *
+ **/
+AccessibleKeySet *
+SPI_createAccessibleKeySet (int len, const char *keysyms, short *keycodes,
+			    const char **keystrings)
+{
+  AccessibleKeySet *keyset = g_new0 (AccessibleKeySet, 1);
+  int i, keysym_len = 0;
+  const char *keysym_ptr = keysyms;
+  keyset->len = len;
+  keyset->keysyms = g_new0 (unsigned long, len);
+  keyset->keycodes = g_new0 (unsigned short, len);
+  keyset->keystrings = g_new0 (char *, len);
+  if (keysyms)
+    {
+      keysym_len = g_utf8_strlen (keysyms, -1);
+    }
+  for (i = 0; i < len; ++i)
+    {
+      if (i < keysym_len)
+        {
+	  keyset->keysyms [i] = (unsigned long) g_utf8_get_char (keysym_ptr);
+	  keysym_ptr = g_utf8_find_next_char (keysym_ptr, NULL);
+        }
+      else
+        {
+          keyset->keysyms [i] = 0;
+        }
+      if (keycodes)
+        {
+	  keyset->keycodes [i] = keycodes [i];
+	}
+      if (keystrings)
+        {
+	  keyset->keystrings [i] = g_strdup (keystrings [i]);
+	}
+    }
+  return keyset;	
+}
+
+/**
+ * SPI_createAccessibleEventListener:
  * @callback : an #AccessibleEventListenerCB callback function, or NULL.
+ * @user_data: a pointer to data which will be passed to the callback when invoked.
  *
- * Create a new #AccessibleEventListener with a specified callback function.
+ * Create a new #AccessibleEventListener with a specified (in-process) callback function.
  *
  * Returns: a pointer to a newly-created #AccessibleEventListener.
  *
  **/
 AccessibleEventListener *
-createEventListener (AccessibleEventListenerCB callback)
+SPI_createAccessibleEventListener (AccessibleEventListenerCB callback,
+				   void                     *user_data)
 {
-  AccessibleEventListener *listener = accessible_event_listener_new ();
+  AccessibleEventListener *listener = cspi_event_listener_new ();
   if (callback)
     {
-      accessible_event_listener_add_callback (listener, callback);
+      AccessibleEventListener_addCallback (listener, callback, user_data);
     }
   return listener;
 }
 
 /**
- * EventListener_addCallback:
+ * AccessibleEventListener_addCallback:
  * @listener: the #AccessibleEventListener instance to modify.
  * @callback: an #AccessibleEventListenerCB function pointer.
+ * @user_data: a pointer to data which will be passed to the callback when invoked.
  *
  * Add an in-process callback function to an existing AccessibleEventListener.
+ * Note that the callback function must live in the same address
+ * space as the AccessibleEventListener implementation code, thus one should not
+ * use this function to attach callbacks to a 'remote' event listener
+ * (that is, one that was not created by a client call to
+ * createAccessibleEventListener ();
  *
  * Returns: #TRUE if successful, otherwise #FALSE.
  *
  **/
-boolean
-EventListener_addCallback (AccessibleEventListener *listener,
-                           AccessibleEventListenerCB callback)
+SPIBoolean
+AccessibleEventListener_addCallback (AccessibleEventListener *listener,
+				     AccessibleEventListenerCB callback,
+				     void                     *user_data)
 {
-  accessible_event_listener_add_callback (listener, callback);
+  cspi_event_listener_add_cb (listener, callback, user_data);
   return TRUE;
 }
 
 /**
- * EventListener_removeCallback:
+ * AccessibleEventListener_unref:
+ * @listener: a pointer to the #AccessibleEventListener being operated on.
+ *
+ * Decrements an #AccessibleEventListener's reference count.
+ **/
+void
+AccessibleEventListener_unref (AccessibleEventListener *listener)
+{
+  cspi_event_listener_unref (listener);
+}
+
+/**
+ * AccessibleEventListener_removeCallback:
  * @listener: the #AccessibleEventListener instance to modify.
  * @callback: an #AccessibleEventListenerCB function pointer.
  *
@@ -47,66 +177,731 @@ EventListener_addCallback (AccessibleEventListener *listener,
  * Returns: #TRUE if successful, otherwise #FALSE.
  *
  **/
-boolean
-EventListener_removeCallback (AccessibleEventListener *listener,
-                           AccessibleEventListenerCB callback)
+SPIBoolean
+AccessibleEventListener_removeCallback (AccessibleEventListener  *listener,
+					AccessibleEventListenerCB callback)
 {
-  accessible_event_listener_remove_callback (listener, callback);
+  cspi_event_listener_remove_cb (listener, callback);
   return TRUE;
 }
 
 /**
- * createKeystrokeListener:
- * @callback : an #KeystrokeListenerCB callback function, or NULL.
+ * SPI_createAccessibleKeystrokeListener:
+ * @callback : an #AccessibleKeystrokeListenerCB callback function, or NULL.
+ * @user_data: a pointer to data which will be passed to the callback when invoked.
  *
- * Create a new #KeystrokeListener with a specified callback function.
+ * Create a new #AccessibleKeystrokeListener with a specified callback function.
  *
- * Returns: a pointer to a newly-created #KeystrokeListener.
+ * Returns: a pointer to a newly-created #AccessibleKeystrokeListener.
  *
  **/
-KeystrokeListener *
-createKeystrokeListener (KeystrokeListenerCB callback)
+AccessibleKeystrokeListener *
+SPI_createAccessibleKeystrokeListener (AccessibleKeystrokeListenerCB callback,
+				       void                         *user_data)
 {
-  KeystrokeListener *listener = g_object_new (KEYSTROKE_LISTENER_TYPE, NULL);
+  AccessibleDeviceListener *listener = cspi_device_listener_new ();
   if (callback)
     {
-      keystroke_listener_add_callback (listener, callback);
+      AccessibleDeviceListener_addCallback (listener, callback, user_data);
     }
   return listener;
 }
 
 /**
- * KeystrokeListener_addCallback:
- * @listener: the #KeystrokeListener instance to modify.
- * @callback: an #KeystrokeListenerCB function pointer.
+ * AccessibleKeystrokeListener_addCallback:
+ * @listener: the #AccessibleKeystrokeListener instance to modify.
+ * @callback: an #AccessibleKeystrokeListenerCB function pointer.
+ * @user_data: a pointer to data which will be passed to the callback when invoked.
  *
- * Add an in-process callback function to an existing #KeystrokeListener.
+ * Add an in-process callback function to an existing #AccessibleKeystrokeListener.
  *
  * Returns: #TRUE if successful, otherwise #FALSE.
  *
  **/
-boolean
-KeystrokeListener_addCallback (KeystrokeListener *listener,
-                           KeystrokeListenerCB callback)
+SPIBoolean
+AccessibleKeystrokeListener_addCallback (AccessibleKeystrokeListener *listener,
+					 AccessibleKeystrokeListenerCB callback,
+					 void                         *user_data)
 {
-  keystroke_listener_add_callback (listener, callback);
+  cspi_device_listener_add_cb (listener, callback, user_data);
   return TRUE;
 }
 
 /**
- * KeystrokeListener_removeCallback:
- * @listener: the #KeystrokeListener instance to modify.
- * @callback: an #KeystrokeListenerCB function pointer.
+ * AccessibleKeystrokeListener_removeCallback:
+ * @listener: the #AccessibleKeystrokeListener instance to modify.
+ * @callback: an #AccessibleKeystrokeListenerCB function pointer.
  *
- * Remove an in-process callback function from an existing KeystrokeListener.
+ * Remove an in-process callback function from an existing #AccessibleKeystrokeListener.
  *
  * Returns: #TRUE if successful, otherwise #FALSE.
  *
  **/
-boolean
-KeystrokeListener_removeCallback (KeystrokeListener *listener,
-				  KeystrokeListenerCB callback)
+SPIBoolean
+AccessibleKeystrokeListener_removeCallback (AccessibleKeystrokeListener *listener,
+					    AccessibleKeystrokeListenerCB callback)
 {
-  keystroke_listener_remove_callback (listener, callback);
+  cspi_device_listener_remove_cb (listener, callback);
   return TRUE;
 }
+
+/**
+ * AccessibleKeystrokeListener_unref:
+ * @listener: a pointer to the #AccessibleKeystrokeListener being operated on.
+ *
+ * Decrements an #AccessibleKeystrokeListener's reference count.
+ **/
+void
+AccessibleKeystrokeListener_unref (AccessibleKeystrokeListener *listener)
+{
+  cspi_device_listener_unref (listener);
+}
+
+/**
+ * SPI_createAccessibleDeviceListener:
+ * @callback : an #AccessibleDeviceListenerCB callback function, or NULL.
+ * @user_data: a pointer to data which will be passed to the callback when invoked.
+ *
+ * Create a new #AccessibleDeviceListener with a specified callback function.
+ *
+ * Returns: a pointer to a newly-created #AccessibleDeviceListener.
+ *
+ **/
+AccessibleDeviceListener *
+SPI_createAccessibleDeviceListener (AccessibleDeviceListenerCB callback,
+				       void                         *user_data)
+{
+  AccessibleDeviceListener *listener = cspi_device_listener_new ();
+  if (callback)
+    {
+      AccessibleDeviceListener_addCallback (listener, callback, user_data);
+    }
+  return listener;
+}
+
+/**
+ * AccessibleDeviceListener_addCallback:
+ * @listener: the #AccessibleDeviceListener instance to modify.
+ * @callback: an #AccessibleDeviceListenerCB function pointer.
+ * @user_data: a pointer to data which will be passed to the callback when invoked.
+ *
+ * Add an in-process callback function to an existing #AccessibleDeviceListener.
+ *
+ * Returns: #TRUE if successful, otherwise #FALSE.
+ *
+ **/
+SPIBoolean
+AccessibleDeviceListener_addCallback (AccessibleDeviceListener *listener,
+					 AccessibleDeviceListenerCB callback,
+					 void                         *user_data)
+{
+  cspi_device_listener_add_cb (listener, callback, user_data);
+  return TRUE;
+}
+
+/**
+ * AccessibleDeviceListener_removeCallback:
+ * @listener: the #AccessibleDeviceListener instance to modify.
+ * @callback: an #AccessibleDeviceListenerCB function pointer.
+ *
+ * Remove an in-process callback function from an existing #AccessibleDeviceListener.
+ *
+ * Returns: #TRUE if successful, otherwise #FALSE.
+ *
+ **/
+SPIBoolean
+AccessibleDeviceListener_removeCallback (AccessibleDeviceListener *listener,
+					    AccessibleDeviceListenerCB callback)
+{
+  cspi_device_listener_remove_cb (listener, callback);
+  return TRUE;
+}
+
+/**
+ * AccessibleDeviceListener_unref:
+ * @listener: a pointer to the #AccessibleDeviceListener being operated on.
+ *
+ * Decrements an #AccessibleDeviceListener's reference count.
+ **/
+void
+AccessibleDeviceListener_unref (AccessibleDeviceListener *listener)
+{
+  cspi_device_listener_unref (listener);
+}
+
+static char *
+cspi_internal_event_get_text (const InternalEvent *e)
+{
+  CORBA_any *any;
+  g_return_val_if_fail (e, NULL);
+  g_return_val_if_fail (e->data, NULL);
+  any = (CORBA_any *) e->data;
+  if (CORBA_TypeCode_equivalent (any->_type, TC_Accessibility_EventDetails, NULL)) 
+    {
+      Accessibility_EventDetails *details = (Accessibility_EventDetails *)any->_value;
+      if (CORBA_TypeCode_equal (details->any_data._type, TC_CORBA_string, cspi_ev()))
+	  return CORBA_string_dup (* (char **) (details->any_data._value));
+      else
+	  return CORBA_string_dup ("");
+      return CORBA_string_dup (* (char **) (details->any_data._value));
+    }
+  else if (CORBA_TypeCode_equivalent (any->_type, TC_CORBA_string, NULL)) 
+    {
+      return CORBA_string_dup (* (char **) any->_value);
+    } 
+  else
+    {
+#ifdef EVENT_CONTEXT_DEBUG
+      fprintf (stderr, "requested string, TC is not TC_CORBA_string! (%u)\n",
+	       (unsigned) any->_type);
+#endif
+      return NULL;
+    }
+}
+
+static Accessible *
+cspi_internal_event_get_object (const InternalEvent *e)
+{
+  CORBA_any *any;
+
+  g_return_val_if_fail (e, NULL);
+  g_return_val_if_fail (e->data, NULL);
+
+  any = (CORBA_any *) e->data;
+  if (CORBA_TypeCode_equivalent (any->_type, TC_Accessibility_EventDetails, NULL)) 
+    {
+      Accessibility_EventDetails *details = (Accessibility_EventDetails *)any->_value;
+      if (CORBA_TypeCode_equal (details->any_data._type, TC_CORBA_Object, cspi_ev()))
+	  return cspi_object_take (* (CORBA_Object *) (details->any_data._value));
+      else
+	  return NULL;
+    }
+  else if (CORBA_TypeCode_equal (any->_type, TC_CORBA_Object, cspi_ev()))
+    return cspi_object_take (* (CORBA_Object *) any->_value);
+  else 
+    return NULL;
+}
+
+static SPIRect *
+cspi_internal_event_get_rect (const InternalEvent *e)
+{
+  CORBA_any *any;
+  g_return_val_if_fail (e, NULL);
+  g_return_val_if_fail (e->data, NULL);
+  any = (CORBA_any *) e->data;
+  if (CORBA_TypeCode_equivalent (any->_type, TC_Accessibility_EventDetails, NULL)) 
+    {
+      Accessibility_EventDetails *details = (Accessibility_EventDetails *)any->_value;
+      SPIRect *rect = g_new (SPIRect, 1);
+      if (CORBA_TypeCode_equal (details->any_data._type, TC_Accessibility_BoundingBox, cspi_ev()))
+      {
+	  Accessibility_BoundingBox *bounds = (Accessibility_BoundingBox *) details->any_data._value;
+	  rect->x = bounds->x;
+	  rect->y = bounds->y;
+	  rect->width = bounds->width;
+	  rect->height = bounds->height;
+	  return rect;
+      }
+      else
+	  return NULL;
+    }
+  if (CORBA_TypeCode_equivalent (any->_type, TC_Accessibility_BoundingBox, NULL)) 
+    {
+      SPIRect *rect = g_new (SPIRect, 1);
+      Accessibility_BoundingBox *bounds = (Accessibility_BoundingBox *) any->_value;
+      rect->x = bounds->x;
+      rect->y = bounds->y;
+      rect->width = bounds->width;
+      rect->height = bounds->height;
+      return rect;
+    } 
+  else
+    {
+#ifdef EVENT_CONTEXT_DEBUG
+      fprintf (stderr, "requested string, TC is not TC_Accessible_RectBounds! (%u)\n",
+	       (unsigned) any->_type);
+#endif
+      return NULL;
+    }
+}
+
+/**
+ * AccessibleEvent_getSourceName:
+ *
+ * Get the 'accessible-name' of the object emitting the event.
+ * @event: an #AccessibleEvent to be queried. 
+ *
+ * Returns: The name of the event source, or NULL if the event source cannot be identified
+ *          or does not report a name.
+ */
+char*        AccessibleEvent_getSourceName (const AccessibleEvent *e)
+{
+    InternalEvent *ie = (InternalEvent *)e;
+    CORBA_any *any = ((ie && ie->data) ? (CORBA_any *)ie->data : NULL);
+    if (any &&
+	CORBA_TypeCode_equivalent (any->_type, 
+				   TC_Accessibility_EventDetails, NULL))
+      {
+	  Accessibility_EventDetails *details = (Accessibility_EventDetails *) any->_value;
+	  return CORBA_string_dup (details->source_name);
+      }
+    else
+	return NULL;
+}
+
+/**
+ * AccessibleEvent_getSourceRole:
+ *
+ * Get the #AccessibleRole of the object emitting the event.
+ * @event: an #AccessibleEvent to be queried. 
+ *
+ * Returns: #AccessibleRole of the event source, or SPI_ROLE_UNKNOWN
+ *          if the event source's role is unknown or unspecified.
+ *          (Some kinds of events, such as 'mouse:' events or
+ *          toolkit events, don't have associated object roles.)
+ */
+AccessibleRole AccessibleEvent_getSourceRole (const AccessibleEvent *e)
+{
+    InternalEvent *ie = (InternalEvent *)e;
+    CORBA_any *any = ((ie && ie->data) ? (CORBA_any *)ie->data : NULL);
+    if (any &&
+	CORBA_TypeCode_equivalent (any->_type, 
+				   TC_Accessibility_EventDetails, NULL))
+      {
+	  Accessibility_EventDetails *details = (Accessibility_EventDetails *) any->_value;
+	  return cspi_role_from_spi_role (details->source_role);
+      }
+    else
+	return SPI_ROLE_UNKNOWN;
+}
+
+/**
+ * AccessibleEvent_getSourceApplication:
+ *
+ * Get the #Application hosting the object which emitted the event.
+ * @event: an #AccessibleEvent to be queried. 
+ *
+ * Returns: A pointer to the host #Application contining the event source
+ *          component.
+ */
+AccessibleApplication* AccessibleEvent_getSourceApplication (const AccessibleEvent *e)
+{
+    InternalEvent *ie = (InternalEvent *)e;
+    CORBA_any *any = ((ie && ie->data) ? (CORBA_any *)ie->data : NULL);
+    if (any &&
+	CORBA_TypeCode_equivalent (any->_type, 
+				   TC_Accessibility_EventDetails, NULL))
+      {
+	  Accessibility_EventDetails *details = (Accessibility_EventDetails *) any->_value;
+	  return  cspi_object_take (details->host_application);
+      }
+    else
+	return NULL;
+}
+
+/**
+ * AccessibleEvent_getSourceApplication:
+ *
+ * Get the host #Application, "accessible name", and #AccessibleRole 
+ * of the object which emitted the event.
+ *
+ * @event: an #AccessibleEvent to be queried. 
+ *
+ * Returns: TRUE if the source details were successfully retrieved, 
+ *          FALSE if they were not, either due to error, incomplete data,
+ *          or the fact that the event did not encapsulate the required data.
+ */
+SPIBoolean   AccessibleEvent_getSourceDetails (const AccessibleEvent *e, 
+					       char **name, AccessibleRole *role, 
+					       AccessibleApplication **app)
+{
+    InternalEvent *ie = (InternalEvent *)e;
+    CORBA_any *any = ((ie && ie->data) ? (CORBA_any *)ie->data : NULL);
+    if (any &&
+	CORBA_TypeCode_equivalent (any->_type, 
+				   TC_Accessibility_EventDetails, NULL))
+      {
+	  Accessibility_EventDetails *details = (Accessibility_EventDetails *) any->_value;
+	  *name = CORBA_string_dup (details->source_name);
+	  *role = cspi_role_from_spi_role (details->source_role);
+	  *app = cspi_object_take (details->host_application);
+	  return TRUE;
+      }
+    else
+      {
+        *name = NULL;
+	*role = SPI_ROLE_UNKNOWN;
+	*app = NULL;
+	return FALSE;
+      }
+}
+
+/**
+ * AccessibleTextChangedEvent_getChangeString:
+ * @e: a pointer to the #AccessibleEvent being queried.
+ *
+ * Queries an #AccessibleEvent of type "object:text-changed", 
+ *         returning the text inserted or deleted.
+ *
+ * Returns: a UTF-8 text string indicating the text inserted,
+ *          deleted, or substituted by this event.
+ **/
+char *
+AccessibleTextChangedEvent_getChangeString (const AccessibleEvent *e)
+{
+  const InternalEvent *foo = (InternalEvent *) e;
+  /* TODO: check the event type. */
+  return cspi_internal_event_get_text (foo);
+}
+
+/**
+ * AccessibleTextSelectionChangedEvent_getSelectionString:
+ * @e: a pointer to the #AccessibleEvent being queried.
+ *
+ * Queries an #AccessibleEvent of type "object:text-selection-changed", 
+ *         returning the newly added, removed, or modified selection string.
+ *
+ * Returns: a UTF-8 text string indicating the recently changed selection.
+ **/
+char *
+AccessibleTextSelectionChangedEvent_getSelectionString (const AccessibleEvent *e)
+{
+  const InternalEvent *foo = (InternalEvent *) e;
+  /* TODO: check the event type. */
+  return cspi_internal_event_get_text (foo);
+}
+
+/**
+ * AccessibleWindowEvent_getTitleString:
+ * @e: a pointer to the #AccessibleEvent being queried.
+ *
+ * Queries an #AccessibleEvent of type "window:", 
+ *         returning the window title.
+ *
+ * Returns: a UTF-8 text string representing the title of the 
+ *         recently changed window.
+ **/
+char *
+AccessibleWindowEvent_getTitleString (const AccessibleEvent *e)
+{
+  const InternalEvent *foo = (InternalEvent *) e;
+  /* TODO: check the event type. */
+  return cspi_internal_event_get_text (foo);
+}
+
+/**
+ * AccessibleChildChangedEvent_getChildAccessible:
+ * @e: a pointer to the #AccessibleEvent being queried.
+ *
+ * Queries an #AccessibleEvent of type "object:children_changed"
+ *         to get a reference to the changed #Accessible.
+ *         Note that context #Accessibles are not guaranteed to outlive
+ *         event delivery, in which case this call may return %NULL
+ *         even if the object existed at the time of dispatch.
+ *
+ * Returns: the context #Accessible for the event, or %NULL if
+ *          there is no longer a valid context #Accessible 
+ *          object for the event.
+ **/
+Accessible *
+AccessibleChildChangedEvent_getChildAccessible (const AccessibleEvent *e)
+{
+  const InternalEvent *foo = (InternalEvent *) e;
+  return (Accessible *) cspi_internal_event_get_object (foo);
+}
+
+/**
+ * AccessibleParentChangedEvent_getParentAccessible:
+ * @e: a pointer to the #AccessibleEvent being queried.
+ *
+ * Queries an #AccessibleEvent of type "object:property-change:accessible-parent"
+ *         to get a reference to the changed #Accessible.
+ *         Note that context #Accessibles are not guaranteed to outlive
+ *         event delivery, in which case this call may return %NULL
+ *         even if the object existed at the time of dispatch.
+ *
+ * Returns: an #Accessible pointer representing the new parent object.
+ **/
+Accessible *
+AccessibleParentChangedEvent_getParentAccessible (const AccessibleEvent *e)
+{
+  const InternalEvent *foo = (InternalEvent *) e;
+  return (Accessible *) cspi_internal_event_get_object (foo);
+}
+
+/**
+ * AccessibleActiveDescendantChangedEvent_getActiveDescendant:
+ * @e: a pointer to the #AccessibleEvent being queried.
+ *
+ * Queries an #AccessibleEvent of type "object:active-descendant-changed"
+ *         to get a reference to the changed #Accessible.
+ *         Note that context #Accessibles are not guaranteed to outlive
+ *         event delivery, in which case this call may return %NULL
+ *         even if the object existed at the time of dispatch.
+ *
+ * Returns: an #Accessible pointer representing the new active descendant.
+ **/
+Accessible *
+AccessibleActiveDescendantChangedEvent_getActiveDescendant (const AccessibleEvent *e) 
+{
+  const InternalEvent *foo = (InternalEvent *) e;
+  return (Accessible *) cspi_internal_event_get_object (foo);
+}
+
+/**
+ * AccessibleTableSummaryChangedEvent_getSummaryAccessible:
+ * @e: a pointer to the #AccessibleEvent being queried.
+ *
+ * Queries an #AccessibleEvent of type "object:property-changed:accessible-table-summary"
+ *         to get a reference to the changed #Accessible.
+ *         Note that context #Accessibles are not guaranteed to outlive
+ *         event delivery, in which case this call may return %NULL
+ *         even if the object existed at the time of dispatch.
+ *
+ * Returns: an #Accessible pointer representing the new table summary.
+ **/
+Accessible *
+AccessibleTableSummaryChangedEvent_getSummaryAccessible (const AccessibleEvent *e) 
+{
+  const InternalEvent *foo = (InternalEvent *) e;
+  return (Accessible *) cspi_internal_event_get_object (foo);
+}
+
+/**
+ * AccessibleTableHeaderChangedEvent_getHeaderAccessible:
+ * @e: a pointer to the #AccessibleEvent being queried.
+ *
+ * Queries an #AccessibleEvent of type 
+ *         "object:property-changed:accessible-table-row-header" or
+ *         "object:property-changed:accessible-table-column-header"
+ *         to get a reference to the changed #Accessible.
+ *         Note that context #Accessibles are not guaranteed to outlive
+ *         event delivery, in which case this call may return %NULL
+ *         even if the object existed at the time of dispatch.
+ *
+ * Returns: an #Accessible pointer representing the new table header.
+ **/
+Accessible *
+AccessibleTableHeaderChangedEvent_getHeaderAccessible (const AccessibleEvent *e)
+{
+  const InternalEvent *foo = (InternalEvent *) e;
+  return (Accessible *) cspi_internal_event_get_object (foo);
+}
+
+
+/**
+ * AccessibleTableCaptionChangedEvent_getCaptionString:
+ * @e: a pointer to the #AccessibleEvent being queried.
+ *
+ * Queries an #AccessibleEvent of type 
+ *         "object:property-changed:accessible-table-caption-object" 
+ *         returning the text in the caption, if present.
+ *
+ * Returns: a UTF-8 text string indicating the text in the caption.
+ **/
+char *
+AccessibleTableCaptionChangedEvent_getCaptionString (const AccessibleEvent *e)
+{
+  const InternalEvent *foo = (InternalEvent *) e;
+  /* TODO: check the event type. */
+  return cspi_internal_event_get_text (foo);
+}
+
+/**
+ * AccessibleTableRowDescriptionChangedEvent_getDescriptionString:
+ * @e: a pointer to the #AccessibleEvent being queried.
+ *
+ * Queries an #AccessibleEvent of type 
+ *         "object:property-changed:accessible-table-row-description" 
+ *         returning the new table row description.
+ *
+ * Returns: a UTF-8 text string representing the recently changed
+ *         table row description 
+ **/
+char *
+AccessibleTableRowDescriptionChangedEvent_getDescriptionString (const AccessibleEvent *e)
+{
+  const InternalEvent *foo = (InternalEvent *) e;
+  /* TODO: check the event type. */
+  return cspi_internal_event_get_text (foo);
+}
+
+/**
+ * AccessibleTableColumnDescriptionChangedEvent_getDescriptionString:
+ * @e: a pointer to the #AccessibleEvent being queried.
+ *
+ * Queries an #AccessibleEvent of type 
+ *         "object:property-changed:accessible-table-column-description" 
+ *         returning the new table column description.
+ *
+ * Returns: a UTF-8 text string representing the recently changed
+ *         table column description 
+ **/
+char *
+AccessibleTableColumnDescriptionChangedEvent_getDescriptionString (const AccessibleEvent *e)
+{
+  const InternalEvent *foo = (InternalEvent *) e;
+  /* TODO: check the event type. */
+  return cspi_internal_event_get_text (foo);
+}
+
+/**
+ * AccessibleDescriptionChangedEvent_getDescriptionString:
+ * @e: a pointer to the #AccessibleEvent being queried.
+ *
+ * Queries an #AccessibleEvent of type 
+ *         "object:property-changed:accessible-description" 
+ *         returning the new description.
+ *
+ * Returns: a UTF-8 text string representing the recently changed
+ *         description 
+ **/
+char *
+AccessibleDescriptionChangedEvent_getDescriptionString (const AccessibleEvent *e)
+{
+  const InternalEvent *foo = (InternalEvent *) e;
+  /* TODO: check the event type. */
+  return cspi_internal_event_get_text (foo);
+}
+
+/**
+ * AccessibleBoundsChangedEvent_getNewBounds:
+ * @e: a pointer to the #AccessibleEvent being queried.
+ *
+ * Queries an #AccessibleEvent of type "object:bounds-changed", 
+ *         returning a pointer to an SPIRect structure containing the
+ *         new bounds, or NULL on error.
+ *         The returned structure should be freed with SPI_freeRect when 
+ *         the caller has finished referencing it.
+ *
+ * Returns: a pointer to an SPIRect defining the new object bounds.
+ **/
+SPIRect *
+AccessibleBoundsChangedEvent_getNewBounds (const AccessibleEvent *e)
+{
+  const InternalEvent *foo = (InternalEvent *) e;
+  /* TODO: check the event type. */
+  return cspi_internal_event_get_rect (foo);
+}
+
+static gint
+cspi_event_compare (gconstpointer p1, gconstpointer p2)
+{
+  const InternalEvent *e1 = p1, *e2 = p2;
+  return (gint) ((long) e2->id  - (long) e1->id);
+}
+
+static InternalEvent *
+cspi_internal_event_lookup (const InternalEvent *e)
+{
+  InternalEvent *internal = NULL;
+  GSList *p =
+    g_slist_find_custom (_cspi_event_queue, e, cspi_event_compare);
+  if (p)
+    internal = p->data;
+  return internal;
+}
+
+static const InternalEvent *
+cspi_internal_event_check (const AccessibleEvent *e)
+{
+  InternalEvent *internal = (InternalEvent *) e;
+  if (internal->magic == SPI_INTERNAL_EVENT_MAGIC) 
+    return internal;
+  else
+    return NULL;
+}
+
+static InternalEvent *
+cspi_internal_event_add (const InternalEvent *e)
+{
+  _cspi_event_queue = g_slist_prepend (_cspi_event_queue, (gpointer) e);
+  return (InternalEvent *) e;
+}
+
+static void
+cspi_internal_event_remove (const InternalEvent *e)
+{
+  GSList *link = g_slist_find_custom (_cspi_event_queue, e, cspi_event_compare);
+  if (link)
+    _cspi_event_queue = g_slist_remove_link (_cspi_event_queue, link);
+}
+
+/**
+ * AccessibleNameChangedEvent_getNameString:
+ * @e: a pointer to the #AccessibleEvent being queried.
+ *
+ * Queries an #AccessibleEvent of type "object:property-change:accessible_name:", 
+ *         returning the name.
+ *
+ * Returns: a UTF-8 text string representing the name of the 
+ *         object which recently changed.
+ **/
+char *
+AccessibleNameChangedEvent_getNameString (const AccessibleEvent *e)
+{
+  const InternalEvent *foo = (InternalEvent *) e;
+  return cspi_internal_event_get_text (foo);
+}
+
+/**
+ * AccessibleEvent_ref:
+ * @e: a pointer to the #AccessibleEvent being referenced.
+ *
+ * Increments by 1 the reference count of the event
+ *
+ * Returns: TRUE if the function succeeded; FALSE if the pointer is not a
+ *         valid event.
+ **/
+SPIBoolean
+AccessibleEvent_ref (const AccessibleEvent *e)
+{
+  const InternalEvent *private = cspi_internal_event_check (e);
+  if (private)
+    {
+      InternalEvent *event = cspi_internal_event_lookup (private);
+      /* 
+       * put event in the cache if it's not there already, 
+       * and increment refcount 
+       */
+      if (!event)
+	{
+	  event = cspi_internal_event_add (private);
+	}
+      event->ref_count++;
+      return TRUE;
+    }
+  else
+    return FALSE;
+}
+
+/**
+ * AccessibleEvent_unref:
+ * @e: a pointer to the #AccessibleEvent being referenced.
+ *
+ * Decrements by 1 the reference count of the event. The event is destroyed
+ * when the reference count recahes zero.
+ *
+ **/
+void
+AccessibleEvent_unref (const AccessibleEvent *e)
+{
+  const InternalEvent *private = cspi_internal_event_check (e);
+  /* decrement refcount and remove if appropriate */
+  if (private)
+    {
+      InternalEvent *event = cspi_internal_event_lookup (private);
+      if (event) 
+	{
+	  event->ref_count--;
+	  if (event->ref_count < 1)
+            {
+	      cspi_internal_event_remove (event);
+              g_free ((gpointer)e->type);
+              Accessible_unref (e->source);
+              CORBA_free (event->data);
+              g_free ((gpointer)e);
+            }
+	}
+    }
+}