* AT-SPI - Assistive Technology Service Provider Interface
* (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
*
- * Copyright 2001 Sun Microsystems Inc.
+ * Copyright 2001, 2002 Sun Microsystems Inc.,
+ * Copyright 2001, 2002 Ximian, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* Boston, MA 02111-1307, USA.
*/
+#include <string.h>
+#include <libbonobo.h>
#include <cspi/spi-private.h>
+
+/* TODO: factor/wrap Bonobo_Stream dependency to cspi/bonobo */
+
+struct StreamCacheItem {
+ Bonobo_Stream stream;
+ gchar *mimetype;
+};
+
+static gboolean
+streams_equal_func (gconstpointer a, gconstpointer b)
+{
+ const struct StreamCacheItem *c1 = a, *c2 = b;
+ return CORBA_Object_is_equivalent (c1->stream, c2->stream, cspi_ev ());
+}
+
+static void
+stream_release (gpointer a)
+{
+ CORBA_Environment ev;
+
+ bonobo_object_release_unref (a, &ev);
+}
+
+static void
+stream_cache_item_free (gpointer a)
+{
+ struct StreamCacheItem *cache_item = a;
+ CORBA_Environment ev;
+ if (cache_item) {
+ bonobo_object_release_unref (cache_item->stream, &ev);
+ SPI_freeString (cache_item->mimetype);
+ g_free (cache_item);
+ }
+}
+
+static GHashTable *streams = NULL;
+
+GHashTable *
+get_streams (void)
+{
+ if (streams == NULL) {
+ streams = g_hash_table_new_full (g_direct_hash, streams_equal_func,
+ stream_release, stream_cache_item_free);
+ }
+ return streams;
+}
+
+/* internal use only, declared in cspi-private.h */
+void
+cspi_streams_close_all (void)
+{
+ if (streams)
+ {
+ g_hash_table_destroy (streams);
+ streams = NULL;
+ }
+}
+
/**
* AccessibleStreamableContent_ref:
* @obj: a pointer to the #AccessibleStreamableContent implementor on which to
char **
AccessibleStreamableContent_getContentTypes (AccessibleStreamableContent *obj)
{
- char **content_types = malloc (sizeof (char *));
- content_types [0] = NULL;
+ Accessibility_StringSeq *mimeseq;
+ char **content_types;
+ int i;
+
+ mimeseq = Accessibility_StreamableContent_getContentTypes (CSPI_OBJREF (obj),
+ cspi_ev ());
+
+ content_types = g_new0 (char *, mimeseq->_length + 1);
+ for (i = 0; i < mimeseq->_length; ++i) {
+ content_types[i] = CORBA_string_dup (mimeseq->_buffer[i]);
+ }
+ content_types [mimeseq->_length] = NULL;
+ CORBA_free (mimeseq);
- /* TODO: connect this to the correct libspi implementation code */
return content_types;
}
AccessibleStreamableContent_open (AccessibleStreamableContent *obj,
const char *content_type)
{
- /* TODO: connect this to the correct libspi implementation code */
+ Bonobo_Stream stream;
+ struct StreamCacheItem *cache;
+ stream = Accessibility_StreamableContent_getContent (CSPI_OBJREF (obj),
+ content_type,
+ cspi_ev ());
+ if (stream != CORBA_OBJECT_NIL) {
+ cache = g_new0 (struct StreamCacheItem, 1);
+ cache->stream = stream;
+ cache->mimetype = CORBA_string_dup (content_type);
+ g_hash_table_replace (get_streams (), stream, cache);
+ return TRUE;
+ }
+ return FALSE;
+}
+
+/**
+ * AccessibleStreamableContent_close:
+ * @obj: a pointer to the #AccessibleStreamableContent implementor on which to operate.
+ *
+ * Close the current streaming connection to an AccessibleStreamableContent implementor.
+ * This must be called before any subsequent AccessibleStreamableContent_open
+ * calls on the same object.
+ *
+ * Returns: #TRUE if successful, #FALSE if unsuccessful.
+ *
+ **/
+SPIBoolean
+AccessibleStreamableContent_close (AccessibleStreamableContent *obj)
+{
+ if (CSPI_OBJREF (obj) != CORBA_OBJECT_NIL) {
+ if (g_hash_table_remove (get_streams (), CSPI_OBJREF (obj)))
+ return TRUE;
+ }
return FALSE;
}
long int offset,
unsigned int seek_type)
{
- /* TODO: connect this to the correct libspi implementation code */
+ /* currently Bonobo_Stream does not appear to support seek operations */
return FALSE;
}
long int nbytes,
unsigned int read_type)
{
- /* TODO: connect this to the correct libspi implementation code */
- return -1;
+ Bonobo_Stream stream;
+ struct StreamCacheItem *cached;
+ cached = g_hash_table_lookup (get_streams (), CSPI_OBJREF (obj));
+ if (cached) {
+ CORBA_long len_read;
+ stream = cached->stream;
+ if (stream != CORBA_OBJECT_NIL) {
+ guint8 *mem;
+ mem = bonobo_stream_client_read (stream, (size_t) nbytes, &len_read, cspi_ev ());
+ if (mem) memcpy (buff, mem, len_read);
+ if (mem && ((nbytes == -1) || (len_read == nbytes)))
+ return TRUE;
+ }
+ }
+ return FALSE;
}