X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=src%2Fui%2Fgui%2Ftranspose-dialog.c;fp=src%2Fui%2Fgui%2Ftranspose-dialog.c;h=cdd3364d8fa7aa9d5a1971be51d0fd8c4fb453a4;hb=17cc22594edc09fa76e03777a9019ec579cd8a1a;hp=3a1f3a931002e53e0127ff7ed9f6dff869e22cfd;hpb=c02bf21b2dfed21e2ff8648b388fa016a6797b63;p=pspp-builds.git

diff --git a/src/ui/gui/transpose-dialog.c b/src/ui/gui/transpose-dialog.c
index 3a1f3a93..cdd3364d 100644
--- a/src/ui/gui/transpose-dialog.c
+++ b/src/ui/gui/transpose-dialog.c
@@ -55,6 +55,28 @@ refresh (PsppireDialog *dialog, gpointer data)
   gtk_entry_set_text (GTK_ENTRY (entry), "");
 }
 
+static gboolean
+dialog_state_valid (gpointer data)
+{
+  GladeXML *xml = data;
+
+  GtkWidget *tv = get_widget_assert (xml, "variables-treeview");
+  GtkWidget *entry = get_widget_assert (xml, "new-name-entry");
+
+  GtkTreeModel *model = gtk_tree_view_get_model (GTK_TREE_VIEW (tv));
+
+  gint n_rows = gtk_tree_model_iter_n_children  (model, NULL);
+
+  if ( n_rows == 0 )
+    return FALSE;
+
+  if ( 0 == strcmp ("", gtk_entry_get_text (GTK_ENTRY (entry))))
+    return FALSE;
+
+  return TRUE;
+}
+
+
 void
 transpose_dialog (GObject *o, gpointer data)
 {
@@ -99,6 +121,9 @@ transpose_dialog (GObject *o, gpointer data)
 
   gtk_window_set_transient_for (GTK_WINDOW (dialog), de->parent.window);
 
+  psppire_dialog_set_valid_predicate (PSPPIRE_DIALOG (dialog),
+				      dialog_state_valid, xml);
+
   response = psppire_dialog_run (PSPPIRE_DIALOG (dialog));
 
   switch (response)