penpot/frontend/src/uxbox/util/forms.cljs
2019-09-09 23:21:55 +02:00

122 lines
3.6 KiB
Clojure

;; 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) 2015-2017 Andrey Antukh <niwi@niwi.nz>
(ns uxbox.util.forms
(:refer-clojure :exclude [uuid])
(:require
[beicon.core :as rx]
[cljs.spec.alpha :as s]
[cuerdas.core :as str]
[lentes.core :as l]
[potok.core :as ptk]
[rumext.alpha :as mf]
[uxbox.util.dom :as dom]
[uxbox.util.spec :as us]
[uxbox.util.i18n :refer [tr]]))
;; --- Handlers Helpers
(defn- impl-mutator
[v update-fn]
(specify v
IReset
(-reset! [_ new-value]
(update-fn new-value))
ISwap
(-swap!
([self f] (update-fn f))
([self f x] (update-fn #(f % x)))
([self f x y] (update-fn #(f % x y)))
([self f x y more] (update-fn #(apply f % x y more))))))
(defn- translate-error-type
[name]
"errors.undefined-error")
(defn- interpret-problem
[acc {:keys [path pred val via in] :as problem}]
;; (prn "interpret-problem" problem)
(cond
(and (empty? path)
(list? pred)
(= (first (last pred)) 'cljs.core/contains?))
(let [path (conj path (last (last pred)))]
(assoc-in acc path {:name ::missing :type :builtin}))
(and (not (empty? path))
(not (empty? via)))
(assoc-in acc path {:name (last via) :type :builtin})
:else acc))
(defn use-form
[spec initial]
(let [[state update-state] (mf/useState {:data (if (fn? initial) (initial) initial)
:errors {}
:touched {}})
clean-data (s/conform spec (:data state))
problems (when (= ::s/invalid clean-data)
(::s/problems (s/explain-data spec (:data state))))
errors (merge (reduce interpret-problem {} problems)
(:errors state))]
(-> (assoc state
:errors errors
:clean-data (when (not= clean-data ::s/invalid) clean-data)
:valid (and (empty? errors)
(not= clean-data ::s/invalid)))
(impl-mutator update-state))))
(defn on-input-change
[{:keys [data] :as form} field]
(fn [event]
(let [target (dom/get-target event)
value (dom/get-value target)]
(swap! form (fn [state]
(-> state
(assoc-in [:data field] value)
(update :errors dissoc field)))))))
(defn on-input-blur
[{:keys [touched] :as form} field]
(fn [event]
(let [target (dom/get-target event)]
(when-not (get touched field)
(swap! form assoc-in [:touched field] true)))))
;; --- Helper Components
(mf/defc field-error
[{:keys [form field type]
:or {only (constantly true)}
:as props}]
(let [touched? (get-in form [:touched field])
{:keys [message code] :as error} (get-in form [:errors field])]
(when (and touched? error
(cond
(nil? type) true
(keyword? type) (= (:type error) type)
(ifn? type) (type (:type error))
:else false))
(prn "field-error" error)
[:ul.form-errors
[:li {:key code} (tr message)]])))
(defn error-class
[form field]
(when (and (get-in form [:errors field])
(get-in form [:touched field]))
"invalid"))
;; --- Form Specs and Conformers
;; TODO: migrate to uxbox.util.spec
(s/def ::email ::us/email)
(s/def ::not-empty-string ::us/not-empty-string)
(s/def ::color ::us/color)
(s/def ::number-str ::us/number-str)