user-accounts: Move non-shared function

The would_demote_only_admin function is only used in CcUserPanel

1 files changed, 38 insertions, 0 deletions

diff --git a/panels/user-accounts/cc-user-panel.c b/panels/user-accounts/cc-user-panel.c
index a31ad256e..5002ba4fe 100644
--- a/panels/user-accounts/cc-user-panel.c
+++ b/panels/user-accounts/cc-user-panel.c
@@ -1136,6 +1136,44 @@ remove_unlock_tooltip (GtkWidget *widget)
                                               G_CALLBACK (show_tooltip_now), NULL);
 }
 
+static guint
+get_num_active_admin (ActUserManager *um)
+{
+        GSList *list;
+        GSList *l;
+        guint num_admin = 0;
+
+        list = act_user_manager_list_users (um);
+        for (l = list; l != NULL; l = l->next) {
+                ActUser *u = l->data;
+                if (act_user_get_account_type (u) == ACT_USER_ACCOUNT_TYPE_ADMINISTRATOR && !act_user_get_locked (u)) {
+                        num_admin++;
+                }
+        }
+        g_slist_free (list);
+
+        return num_admin;
+}
+
+static gboolean
+would_demote_only_admin (ActUser *user)
+{
+        ActUserManager *um = act_user_manager_get_default ();
+
+        /* Prevent the user from demoting the only admin account.
+         * Returns TRUE when user is an administrator and there is only
+         * one enabled administrator. */
+
+        if (act_user_get_account_type (user) == ACT_USER_ACCOUNT_TYPE_STANDARD ||
+            act_user_get_locked (user))
+                return FALSE;
+
+        if (get_num_active_admin (um) > 1)
+                return FALSE;
+
+        return TRUE;
+}
+
 static void
 on_permission_changed (CcUserPanel *self)
 {