[latexila/gnome-3] Save scheme setting: more robust

[SÃbastien Wilmet <swilmet src gnome org>]

commit 02024050ebe4ef2363f57374f04bc063bedf0ffe
Author: SÃbastien Wilmet <swilmet src gnome org>
Date:   Mon Apr 2 03:22:49 2012 +0200

    Save scheme setting: more robust
    
    There were sometimes critical messages.
    And anyway using the cursor_changed signal was a bad idea.

 src/preferences_dialog.vala |   17 ++++++++++-------
 1 files changed, 10 insertions(+), 7 deletions(-)
---
diff --git a/src/preferences_dialog.vala b/src/preferences_dialog.vala
index 751a09b..0d2f490 100644
--- a/src/preferences_dialog.vala
+++ b/src/preferences_dialog.vala
@@ -227,17 +227,20 @@ public class PreferencesDialog : Dialog
         init_schemes_treeview (schemes_treeview, current_scheme_id);
 
         // the scheme has changed in the treeview -> update gsettings
-        schemes_treeview.cursor_changed.connect ((treeview) =>
+        TreeSelection schemes_select = schemes_treeview.get_selection ();
+        schemes_select.changed.connect (() =>
         {
-            TreePath tree_path;
-            TreeIter iter;
-            schemes_treeview.get_cursor (out tree_path, null);
+            unowned TreeModel model;
+            GLib.List<TreePath> rows = schemes_select.get_selected_rows (out model);
+            if (rows.length () != 1)
+                return;
 
-            TreeModel model = treeview.model;
-            model.get_iter (out iter, tree_path);
+            TreePath path = rows.nth_data (0);
+            TreeIter iter;
+            model.get_iter (out iter, path);
 
             string id;
-            model.get (iter, StyleSchemes.ID, out id, -1);
+            model.get (iter, StyleSchemes.ID, out id);
 
             settings.set_string ("scheme", id);
         });