Fixed bug #22073

[pspp-builds.git] / src / ui / gui / psppire-dict.c

diff --git a/src/ui/gui/psppire-dict.c b/src/ui/gui/psppire-dict.c
index 8560c223f1236b0b7de9d4904b55c4e1b0358b3e..3722b2e1894a298179bfcd0546cb6d00a2d72ae4 100644 (file)
--- a/src/ui/gui/psppire-dict.c
+++ b/src/ui/gui/psppire-dict.c
@@ -42,14 +42,19 @@ static void dictionary_tree_model_init (GtkTreeModelIface *iface);
 /* --- variables --- */
 static GObjectClass     *parent_class = NULL;
 
-enum  {VARIABLE_CHANGED,
-       VARIABLE_RESIZED,
-       VARIABLE_INSERTED,
-       VARIABLE_DELETED,
-       WEIGHT_CHANGED,
-       FILTER_CHANGED,
-       SPLIT_CHANGED,
-       n_SIGNALS};
+enum  {
+  BACKEND_CHANGED,
+
+  VARIABLE_CHANGED,
+  VARIABLE_RESIZED,
+  VARIABLE_INSERTED,
+  VARIABLE_DELETED,
+
+  WEIGHT_CHANGED,
+  FILTER_CHANGED,
+  SPLIT_CHANGED,
+  n_SIGNALS
+};
 
 static guint signals [n_SIGNALS];
 
@@ -106,6 +111,17 @@ psppire_dict_class_init (PsppireDictClass *class)
 
   object_class->finalize = psppire_dict_finalize;
 
+  signals [BACKEND_CHANGED] =
+    g_signal_new ("backend-changed",
+                 G_TYPE_FROM_CLASS (class),
+                 G_SIGNAL_RUN_FIRST,
+                 0,
+                 NULL, NULL,
+                 g_cclosure_marshal_VOID__VOID,
+                 G_TYPE_NONE,
+                 0);
+
+
   signals [VARIABLE_CHANGED] =
     g_signal_new ("variable_changed",
                  G_TYPE_FROM_CLASS (class),
@@ -289,6 +305,7 @@ void
 psppire_dict_replace_dictionary (PsppireDict *dict, struct dictionary *d)
 {
   struct variable *var =  dict_get_weight (d);
+
   dict->dict = d;
 
   weight_changed_callback (d, var ? var_get_dict_index (var) : -1, dict);
@@ -299,6 +316,8 @@ psppire_dict_replace_dictionary (PsppireDict *dict, struct dictionary *d)
   split_changed_callback (d, dict);
 
   dict_set_callbacks (dict->dict, &gui_callbacks, dict);
+
+  g_signal_emit (dict, signals [BACKEND_CHANGED], 0);
 }
 
 
@@ -771,6 +790,10 @@ psppire_dict_rename_var (PsppireDict *dict, struct variable *v,
   if ( ! var_is_valid_name (name, false))
     return FALSE;
 
+  /* Make sure no other variable has this name */
+  if ( NULL != psppire_dict_lookup_var (dict, name))
+    return FALSE;
+
   dict_rename_var (dict->dict, v, name);
 
   return TRUE;