+ ModestWindow *window);
+
+/**
+ * modest_dimming_rules_group_add_rules:
+ * @self: the #ModestDimmingRulesGroup object which stores dimming rules.
+ * @rule: a #ModestDimmingRule
+ * @user_data: generic user data.
+ *
+ * Add @rule to @self dimming rules group object.
+ **/
+void
+modest_dimming_rules_group_add_widget_rule (ModestDimmingRulesGroup *self,
+ GtkWidget *widget,
+ GCallback callback,
+ ModestWindow *window);