Added crosstabs dialog

[pspp-builds.git] / src / ui / gui / sort-cases-dialog.c

diff --git a/src/ui/gui/sort-cases-dialog.c b/src/ui/gui/sort-cases-dialog.c
index 0eb0eaa678119166e44d8d5ff0d6c5f52c92bf9d..62fac58379b7aaf71f0de9fed8672c98ee3ed74a 100644 (file)
--- a/src/ui/gui/sort-cases-dialog.c
+++ b/src/ui/gui/sort-cases-dialog.c
@@ -45,13 +45,28 @@ struct sort_cases_dialog
   GtkToggleButton *ascending;
 };
 
+
+static gboolean
+dialog_state_valid (gpointer data)
+{
+  struct sort_cases_dialog *scd = data;
+  GtkTreeModel *model = gtk_tree_view_get_model (scd->tv);
+
+  gint n_rows = gtk_tree_model_iter_n_children  (model, NULL);
+
+  if ( n_rows == 0 )
+    return FALSE;
+
+  return TRUE;
+}
+
 static char *
 generate_syntax (const struct sort_cases_dialog *scd)
 {
   gchar *text;
   GString *string = g_string_new ("SORT CASES BY ");
   gint n_vars = append_variable_names (string,
-                                      scd->dict, GTK_TREE_VIEW (scd->tv));
+                                      scd->dict, GTK_TREE_VIEW (scd->tv), 0);
 
   if ( n_vars == 0 )
     g_string_assign (string, "");
@@ -107,6 +122,7 @@ sort_cases_dialog (GObject *o, gpointer data)
                                 source,
                                 dest,
                                 insert_source_row_into_tree_view,
+                                NULL,
                                 NULL);
 
   g_signal_connect (dialog, "refresh", G_CALLBACK (refresh),  dest);
@@ -116,6 +132,11 @@ sort_cases_dialog (GObject *o, gpointer data)
   scd.ascending =
     GTK_TOGGLE_BUTTON (get_widget_assert (xml, "sort-cases-radiobutton0"));
 
+
+  psppire_dialog_set_valid_predicate (PSPPIRE_DIALOG (dialog),
+                                     dialog_state_valid, &scd);
+
+
   response = psppire_dialog_run (PSPPIRE_DIALOG (dialog));