0
Fork 0
mirror of https://github.com/penpot/penpot.git synced 2025-01-27 00:49:28 -05:00
penpot/frontend/src/app/worker.cljs
2020-08-18 19:32:11 +02:00

86 lines
2.5 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/.
;;
;; This Source Code Form is "Incompatible With Secondary Licenses", as
;; defined by the Mozilla Public License, v. 2.0.
;;
;; Copyright (c) 2020 UXBOX Labs SL
(ns app.worker
(:require
[cljs.spec.alpha :as s]
[promesa.core :as p]
[beicon.core :as rx]
[cuerdas.core :as str]
[app.common.exceptions :as ex]
[app.common.spec :as us]
[app.common.uuid :as uuid]
[app.worker.impl :as impl]
[app.worker.selection]
[app.worker.thumbnails]
[app.worker.snaps]
[app.util.object :as obj]
[app.util.transit :as t]
[app.util.worker :as w])
(:import goog.Uri))
;; --- Messages Handling
(s/def ::cmd keyword?)
(s/def ::payload
(s/keys :req-un [::cmd]))
(s/def ::sender-id uuid?)
(s/def ::message
(s/keys :req-un [::payload ::sender-id]))
(defn- handle-message
[{:keys [sender-id payload] :as message}]
(us/assert ::message message)
(try
(let [result (impl/handler payload)]
(cond
(p/promise? result)
(p/handle result
(fn [msg]
(.postMessage js/self (t/encode
{:reply-to sender-id
:payload msg})))
(fn [err]
(.postMessage js/self (t/encode
{:reply-to sender-id
:error {:data (ex-data err)
:message (ex-message err)}}))))
(or (rx/observable? result)
(rx/subject? result))
(throw (ex-info "not implemented" {}))
:else
(.postMessage js/self (t/encode
{:reply-to sender-id
:payload result}))))
(catch :default e
(let [message {:reply-to sender-id
:error {:data (ex-data e)
:message (ex-message e)}}]
(.postMessage js/self (t/encode message))))))
(defn- on-message
[event]
(when (nil? (.-source event))
(let [message (.-data event)
message (t/decode message)]
(handle-message message))))
(.addEventListener js/self "message" on-message)
(defn ^:dev/before-load stop []
(.removeEventListener js/self "message" on-message))
(defn ^:dev/after-load start []
[]
(.addEventListener js/self "message" on-message))