XML, gst-editor, gst-rec and anything that's not based on spider is now broken. This re-fixes it.

Original commit message from CVS:
XML, gst-editor, gst-rec and anything that's not based on spider is now broken. This re-fixes it.

gst/gstelement.c

@@ -147,6 +147,8 @@ gst_element_class_init (GstElementClass *klass)
   klass->error	 			= GST_DEBUG_FUNCPTR (gst_element_error_func);
   klass->padtemplates 			= NULL;
   klass->numpadtemplates 		= 0;
+
+  klass->elementfactory			= NULL;
 }
 
 static void
@@ -2549,6 +2551,22 @@ failure:
   return GST_STATE_FAILURE;
 }
 
+/**
+ * gst_element_get_factory:
+ * @element: a #GstElement to request the element factory of.
+ *
+ * Retrieves the factory that was used to create this element.
+ *
+ * Returns: the #GstElementFactory used for creating this element.
+ */
+GstElementFactory*
+gst_element_get_factory (GstElement *element)
+{
+  g_return_val_if_fail (GST_IS_ELEMENT (element), NULL);
+                                                                                
+  return GST_ELEMENT_GET_CLASS (element)->elementfactory;
+}
+
 static void
 gst_element_dispose (GObject *object)
 {
@@ -2628,6 +2646,13 @@ gst_element_save_thyself (GstObject *object,
 
   xmlNewChild(parent, NULL, "name", GST_ELEMENT_NAME(element));
 
+  if (oclass->elementfactory != NULL) {
+    GstElementFactory *factory = (GstElementFactory *)oclass->elementfactory;
+
+    xmlNewChild (parent, NULL, "type",
+		 GST_PLUGIN_FEATURE (factory)->name);
+  }
+
 /* FIXME: what is this? */  
 /*  if (element->manager) */
 /*    xmlNewChild(parent, NULL, "manager", GST_ELEMENT_NAME(element->manager)); */

gst/gstelement.h

@@ -192,6 +192,10 @@ struct _GstElementClass {
 
   /* the element details */
   GstElementDetails 	details;
+
+  /* factory that the element was created from */
+  GstElementFactory	*elementfactory;
+
   /* templates for our pads */
   GList 		*padtemplates;
   gint 			numpadtemplates;
@@ -359,6 +363,8 @@ void 			gst_element_wait_state_change 	(GstElement *element);
 	
 const gchar*		gst_element_state_get_name	(GstElementState state);
 
+GstElementFactory*	gst_element_get_factory		(GstElement *element);
+
 GstBin*			gst_element_get_managing_bin	(GstElement *element);
 
 
@@ -403,7 +409,6 @@ gboolean		gst_element_register			(GstPlugin *plugin,
 								 GType type);
 
 GstElementFactory *	gst_element_factory_find		(const gchar *name);
-GstElementFactory *	gst_element_factory_find_from_element	(GstElement *element);
 GType			gst_element_factory_get_element_type	(GstElementFactory *factory);
 G_CONST_RETURN gchar *	gst_element_factory_get_longname	(GstElementFactory *factory);
 G_CONST_RETURN gchar *	gst_element_factory_get_klass		(GstElementFactory *factory);

gst/gstelementfactory.c

@@ -108,43 +108,7 @@ gst_element_factory_find (const gchar *name)
   GST_DEBUG ("no such elementfactory \"%s\"", name);
   return NULL;
 }
-typedef struct {
-  GType type;
-} MyGTypeData;
-static gboolean
-find_type_filter (GstPluginFeature *feature, gpointer data)
-{
-  GstElementFactory *factory;
-  
-  if (!GST_IS_ELEMENT_FACTORY (feature))
-    return FALSE;
-
-  factory = GST_ELEMENT_FACTORY (feature);
 
-  return factory->type == ((MyGTypeData *) data)->type;
-}
-GstElementFactory *
-gst_element_factory_find_from_element (GstElement *element)
-{
-  GstElementFactory *factory;
-  GList *list;
-  MyGTypeData data;
-  
-  g_return_val_if_fail(GST_IS_ELEMENT (element), NULL);
-  
-  data.type = G_OBJECT_TYPE (element);
-  
-  list = gst_registry_pool_feature_filter (find_type_filter, TRUE, &data);
-
-  if (!list)
-    return NULL;
-  
-  g_assert (g_list_next (list) == NULL);
-  factory = GST_ELEMENT_FACTORY (list->data);
-  g_list_free (list);
-
-  return factory;
-}
 void
 __gst_element_details_clear (GstElementDetails *dp)
 {
@@ -248,6 +212,7 @@ gst_element_factory_create (GstElementFactory *factory,
                            const gchar *name)
 {
   GstElement *element;
+  GstElementClass *oclass;
 
   g_return_val_if_fail (factory != NULL, NULL);
 
@@ -265,10 +230,18 @@ gst_element_factory_create (GstElementFactory *factory,
       return NULL;
   }
 
+  oclass = GST_ELEMENT_CLASS (g_type_class_ref (factory->type)); 	 
+  if (oclass->elementfactory == NULL) { 	 
+    GST_DEBUG ("class %s", GST_PLUGIN_FEATURE_NAME (factory)); 	 
+    oclass->elementfactory = factory;
+  }
+
   /* create an instance of the element */
   element = GST_ELEMENT (g_object_new (factory->type, NULL));
   g_assert (element != NULL);
 
+  g_type_class_unref (oclass);
+
   gst_object_set_name (GST_OBJECT (element), name);
 
   return element;
@@ -363,7 +336,7 @@ gst_element_factory_get_longname (GstElementFactory *factory)
  * Returns: the class
  */
 G_CONST_RETURN gchar *
-gst_element_factory_get_class (GstElementFactory *factory)
+gst_element_factory_get_klass (GstElementFactory *factory)
 {
   g_return_val_if_fail (GST_IS_ELEMENT_FACTORY (factory), NULL);