1 files changed, 112 insertions, 0 deletions

diff --git a/src/fs/gnunet-fs-gtk_common.c b/src/fs/gnunet-fs-gtk_common.c
index 8ca006e3..82d93e8f 100644
--- a/src/fs/gnunet-fs-gtk_common.c
+++ b/src/fs/gnunet-fs-gtk_common.c
@@ -416,5 +416,117 @@ GNUNET_FS_GTK_handle_uri (const struct GNUNET_FS_Uri *uri)
   GNUNET_break (0);
 }
 
+/* Largest rating value among all namespaces. INT_MIN means "undefined" */
+static int largest_namespace_rating = INT_MIN;
+
+
+/**
+ * Helper function for finding the largest namespace rating.
+ *
+ * @param cls closure
+ * @param pseudonym pseudonym hash
+ * @param md metadata container
+ * @param rating rating
+ * @return GNUNET_OK to keep iterating
+ */
+static int
+find_largest_namespace_rating_iterator (void *cls,
+    const GNUNET_HashCode *pseudonym, const char *name,
+    const char *unique_name,
+    const struct GNUNET_CONTAINER_MetaData *md, int rating)
+{
+  int *largest = cls;
+  if (*largest < rating)
+    *largest = rating;
+  return GNUNET_OK;
+}
+
+/**
+ * Finds largest namespace rating.
+ * Used to calculate a rating for newly discovered namespaces.
+ * Returns from cache, if possible.
+ *
+ * @return largest namespace rating. Might be negative and even. INT_MIN means
+ *         that no namespaces are known.
+ */
+int
+GNUNET_GTK_find_largest_namespace_rating ()
+{
+  if (largest_namespace_rating != INT_MIN)
+    return largest_namespace_rating;
+  (void) GNUNET_PSEUDONYM_list_all (GNUNET_FS_GTK_get_configuration (),
+      find_largest_namespace_rating_iterator, &largest_namespace_rating);
+  return largest_namespace_rating;
+}
+
+/**
+ * Sets largest namespace rating.
+ * Used to change cached largest namespace rating, when namespace list
+ * was changed in a way that is easy to track.
+ * If namespace list was changed in a way that makes it difficult to
+ * decide upon the new value, set new value to INT_MIN.
+ *
+ * @param new_value new value for the rating.
+ */
+void
+GNUNET_GTK_set_largest_namespace_rating (int new_value)
+{
+  largest_namespace_rating = new_value;
+}
+
+/**
+ * Converts a GtkTreeRowReference to a GtkTreeIter.
+ *
+ * @param rr row reference
+ * @param iter pointer to an iter structure to fill
+ * @return GNUNET_OK if iter was filled, GNUNET_SYSERR otherwise
+ */
+int
+GNUNET_GTK_get_iter_from_reference (GtkTreeRowReference *rr, GtkTreeIter *iter)
+{
+  int result = GNUNET_SYSERR;
+  if (rr != NULL)
+  {
+    if (gtk_tree_row_reference_valid (rr))
+    {
+      GtkTreePath *path;
+      GtkTreeModel *model;
+      path = gtk_tree_row_reference_get_path (rr);
+      model = gtk_tree_row_reference_get_model (rr);
+      if (path != NULL && model != NULL)
+      {
+        if (gtk_tree_model_get_iter (model,
+            iter, path))
+          result = GNUNET_OK;
+        gtk_tree_path_free (path);
+      }
+    }
+  }
+  return result;
+}
+
+/**
+ * Creates a GtkTreeRowReference from a GtkTreeIter.
+ *
+ * @param model a model to reference
+ * @param iter an iter that points to a row in the model
+ * @return newly created reference or NULL in case of error
+ */
+GtkTreeRowReference *
+GNUNET_GTK_get_reference_from_iter (GtkTreeModel *model, GtkTreeIter *iter)
+{
+  GtkTreeRowReference *result = NULL;
+  if (iter != NULL && model != NULL)
+  {
+    GtkTreePath *path = gtk_tree_model_get_path (model, iter);
+    if (path != NULL)
+    {
+      result = gtk_tree_row_reference_new (model, path);
+      gtk_tree_path_free (path);
+    }
+  }
+  return result;
+}
+
 
 /* end of gnunet-fs-gtk-common.c */