2003-02-14 Padraig O'Briain <padraig.obriain@sun.com>

[platform/upstream/at-spi2-core.git] / cspi / spi_event.c

diff --git a/cspi/spi_event.c b/cspi/spi_event.c
index a819941..27ac522 100644 (file)
--- a/cspi/spi_event.c
+++ b/cspi/spi_event.c
@@ -2,8 +2,8 @@
  * AT-SPI - Assistive Technology Service Provider Interface
  * (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
  *
- * Copyright 2001, 2002 Sun Microsystems Inc.,
- * Copyright 2001, 2002 Ximian, Inc.
+ * 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
@@ -24,6 +24,8 @@
 #include <cspi/spi-private.h>
 #include <cspi/bonobo/cspi-bonobo-listener.h>
 
+static GSList *_cspi_event_queue = NULL;
+
 /**
  * SPI_freeAccessibleKeySet:
  * @keyset: An AccessibleKeyset to free.
@@ -336,7 +338,7 @@ cspi_internal_event_get_text (const InternalEvent *e)
   any = (CORBA_any *) e->data;
   if (CORBA_TypeCode_equivalent (any->_type, TC_CORBA_string, NULL)) 
     {
-      return * (char **) any->_value;
+      return g_strdup (* (char **) any->_value);
     } 
   else
     {
@@ -352,18 +354,20 @@ 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 (any->_type == TC_CORBA_Object) 
-    return cspi_object_add (* (CORBA_Object *) any->_value);
+  if (CORBA_TypeCode_equal (any->_type, TC_CORBA_Object, cspi_ev()))
+    return cspi_object_take (* (CORBA_Object *) any->_value);
   else 
     return NULL;
 }
 
 /**
  * AccessibleTextChangedEvent_getChangeString:
- * @event: a pointer to the #AccessibleEvent being queried.
+ * @e: a pointer to the #AccessibleEvent being queried.
  *
  * Queries an #AccessibleEvent of type "object:text-changed", 
  *         returning the text inserted or deleted.
@@ -501,9 +505,90 @@ AccessibleDescriptionChangedEvent_getDescriptionString (const AccessibleEvent *e
   return NULL;
 }
 
+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);
+}
+
 char *
 AccessibleNameChangedEvent_getNameString (const AccessibleEvent *e)
 {
   return NULL;
 }
 
+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;
+}
+
+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);
+       }
+    }
+}