penpot/frontend/src/app/plugins/events.cljs
2024-05-23 14:24:12 +02:00

85 lines
2.7 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) KALEIDOS INC
(ns app.plugins.events
(:require
[app.common.data.macros :as dm]
[app.main.store :as st]
[app.plugins.file :as file]
[app.plugins.page :as page]
[goog.functions :as gf]))
(defmulti handle-state-change (fn [type _] type))
(defmethod handle-state-change "finish"
[_ old-val new-val]
(let [old-file-id (:current-file-id old-val)
new-file-id (:current-file-id new-val)]
(if (and (some? old-file-id) (nil? new-file-id))
(str old-file-id)
::not-changed)))
(defmethod handle-state-change "filechange"
[_ old-val new-val]
(let [old-file (:workspace-file old-val)
new-file (:workspace-file new-val)
old-data (:workspace-data old-val)
new-data (:workspace-data new-val)]
(if (and (identical? old-file new-file)
(identical? old-data new-data))
::not-changed
(file/file-proxy (:id new-file)))))
(defmethod handle-state-change "pagechange"
[_ old-val new-val]
(let [file-id (:current-file-id new-val)
old-page-id (:current-page-id old-val)
new-page-id (:current-page-id new-val)
old-page (dm/get-in old-val [:workspace-data :pages-index old-page-id])
new-page (dm/get-in new-val [:workspace-data :pages-index new-page-id])]
(if (identical? old-page new-page)
::not-changed
(page/page-proxy file-id new-page-id))))
(defmethod handle-state-change "selectionchange"
[_ old-val new-val]
(let [old-selection (get-in old-val [:workspace-local :selected])
new-selection (get-in new-val [:workspace-local :selected])]
(if (identical? old-selection new-selection)
::not-changed
(apply array (map str new-selection)))))
(defmethod handle-state-change "themechange"
[_ old-val new-val]
(let [old-theme (get-in old-val [:profile :theme])
new-theme (get-in new-val [:profile :theme])]
(if (identical? old-theme new-theme)
::not-changed
(if (= new-theme "default")
"dark"
new-theme))))
(defmethod handle-state-change :default
[_ _ _]
::not-changed)
(defn add-listener
[type callback]
(let [key (js/Symbol)
callback (gf/debounce callback 10)]
(add-watch
st/state key
(fn [_ _ old-val new-val]
(let [result (handle-state-change type old-val new-val)]
(when (not= ::not-changed result)
(callback result)))))
;; return the generated key
key))
(defn remove-listener
[key]
(remove-watch st/state key))