X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fui%2Fgui%2Fsort-cases-dialog.c;h=62fac58379b7aaf71f0de9fed8672c98ee3ed74a;hb=782d25daa41a6e267b0c7c6482835fac12964bbc;hp=c299d3d4a0d60674d43c2f9465c402b0c8c3cf67;hpb=a1fa03b1638263a959df0b2943478a0a4ca4b11a;p=pspp-builds.git

diff --git a/src/ui/gui/sort-cases-dialog.c b/src/ui/gui/sort-cases-dialog.c
index c299d3d4..62fac583 100644
--- a/src/ui/gui/sort-cases-dialog.c
+++ b/src/ui/gui/sort-cases-dialog.c
@@ -1,21 +1,18 @@
-/*
-    PSPPIRE --- A Graphical User Interface for PSPP
-    Copyright (C) 2007  Free Software Foundation
+/* PSPPIRE - a graphical user interface for PSPP.
+   Copyright (C) 2007  Free Software Foundation
 
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
 
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
 
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-    02110-1301, USA. */
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>. */
 
 #include <config.h>
 #include <gtk/gtk.h>
@@ -48,13 +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, "");
@@ -110,6 +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);
@@ -119,6 +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));