diff --git a/src/uxbox/util/mixins.clj b/src/uxbox/util/mixins.clj
new file mode 100644
index 000000000..662469b7c
--- /dev/null
+++ b/src/uxbox/util/mixins.clj
@@ -0,0 +1,40 @@
+;; This Source Code Form is subject to the terms of the Mozilla Public
+;; License, v. 2.0. If a copy of the MPL was not distributed with this
+;; file, You can obtain one at http://mozilla.org/MPL/2.0/.
+;;
+;; Copyright (c) 2016 Andrey Antukh <niwi@niwi.nz>
+
+(ns uxbox.util.mixins
+  (:require [rum.core :as rum]
+            [sablono.compiler :as s]))
+
+(defn- parse-defc
+  [args]
+  (loop [r {}
+         s 0
+         v (first args)
+         n (rest args)]
+    (case s
+      0 (if (symbol? v)
+          (recur (assoc r :name v) (inc s) (first n) (rest n))
+          (throw (ex-info "Invalid" {})))
+      1 (if (string? v)
+          (recur (assoc r :doc v) (inc s) (first n) (rest n))
+          (recur r (inc s) v n))
+      2 (if (map? v)
+          (if-let [mixins (:mixins v)]
+            (let [spec (dissoc v :mixins)
+                  mixins (if (empty? spec)
+                           mixins
+                           (conj mixins spec))]
+              (recur (assoc r :mixins mixins) (inc s) (first n) (rest n)))
+            (recur (assoc r :mixins [v]) (inc s) (first n) (rest n)))
+          (recur r (inc s) v n))
+      3 (let [sym (:name r)
+              func `(fn ~sym ~v ~(s/compile-html `(do ~@n)))]
+          [func (:doc r) (:mixins r) sym]))))
+
+(defmacro defc
+  [& args]
+  (let [[render doc mixins cname] (parse-defc args)]
+    `(def ~cname ~doc (rum/build-defc ~render ~mixins ~(str cname)))))