1 files changed, 60 insertions, 0 deletions

diff --git a/src/common/iterators.c b/src/common/iterators.c
index d7441753..b1a54826 100644
--- a/src/common/iterators.c
+++ b/src/common/iterators.c
@@ -27,6 +27,7 @@
 #include "gnunetgtk_common.h"
 #include <GNUnet/gnunet_util_crypto.h>
 #include <glib.h>
+
 /**
  * Identical to "gtk_tree_selection_selected_foreach",
  * except that modifications of the underlying model
@@ -75,3 +76,62 @@ void ggc_tree_selection_selected_foreach(GtkTreeSelection *selection,
        size,
        0);
 }
+
+typedef struct {
+  GtkTreeRowReference ** refs;
+  unsigned int pos;
+  unsigned int size;
+} CollectData;
+
+static gboolean
+collectAllRows(GtkTreeModel * model,
+               GtkTreePath * path,
+               GtkTreeIter * iter,
+               gpointer cls) {
+  CollectData * cd = cls;
+
+  if (cd->size == cd->pos)
+    GROW(cd->refs,
+         cd->size,
+         cd->size * 2 + 4);
+  cd->refs[cd->pos++] = gtk_tree_row_reference_new(model,
+                                                   path);
+  return FALSE;
+}
+               
+
+/**
+ * Identical to "gtk_tree_model_foreach",
+ * except that modifications of the underlying model
+ * during the iteration are tolerated.
+ */
+void ggc_tree_model_foreach(GtkTreeModel * model,
+                            GtkTreeSelectionForeachFunc func,
+                            gpointer data) {
+  unsigned int i;
+  GtkTreePath * path;
+  GtkTreeIter iter;
+  CollectData cd;
+
+  memset(&cd,
+         0,
+         sizeof(CollectData));
+  gtk_tree_model_foreach(model,
+                         &collectAllRows,
+                         &cd);
+  for (i=0;i<cd.pos;i++) {
+    path = gtk_tree_row_reference_get_path(cd.refs[i]);
+    gtk_tree_row_reference_free(cd.refs[i]);
+    if (TRUE == gtk_tree_model_get_iter(model,
+                                        &iter,
+                                        path))
+      func(model,
+           path,
+           &iter,
+           data);
+    gtk_tree_path_free(path);
+  }
+  GROW(cd.refs,
+       cd.size,
+       0);
+}