✨ Simplify changes detection and commit.

With minor code cleaning.

frontend/src/uxbox/util/dom.cljs

@@ -2,11 +2,16 @@
 ;; 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) 2015-2016 Andrey Antukh <niwi@niwi.nz>
+;; This Source Code Form is "Incompatible With Secondary Licenses", as
+;; defined by the Mozilla Public License, v. 2.0.
+;;
 ;; Copyright (c) 2015-2016 Juan de la Cruz <delacruzgarciajuan@gmail.com>
+;; Copyright (c) 2015-2020 Andrey Antukh <niwi@niwi.nz>
 
 (ns uxbox.util.dom
-  (:require [goog.dom :as dom]))
+  (:require
+   [goog.dom :as dom]
+   [cuerdas.core :as str]))
 
 ;; --- Deprecated methods
 
@@ -22,6 +27,16 @@
   [e]
   (.-target e))
 
+(defn classnames
+  [& params]
+  (assert (even? (count params)))
+  (str/join " " (reduce (fn [acc [k v]]
+                          (if (true? v)
+                            (conj acc (name k))
+                            acc))
+                        []
+                        (partition 2 params))))
+
 ;; --- New methods
 
 (defn get-element-by-class