reagent/demo/sitetools/core.cljs

116 lines
3.9 KiB
Clojure

(ns sitetools.core
(:require [clojure.string :as string]
[goog.events :as evt]
[reagent.core :as r]
[reagent.debug :refer-macros [dbg log dev?]]
[reagent.interop :as i :refer-macros [$ $!]])
(:import goog.History
[goog.history Html5History EventType]))
(enable-console-print!)
;;; Configuration
(declare main-content)
(defonce config (r/atom {:body [#'main-content]
:pages {"/index.html" {:content [:div]
:title ""}}
:site-dir "target/prerender/public/"
:css-infiles ["site/public/css/main.css"]
:css-file "css/built.css"
:js-file "js/main.js"
:main-div "main-content"
:default-title ""}))
(defonce history nil)
(defn demo-handler [state [id x :as event]]
(case id
:set-content (let [page x
title (:title page)
title (if title
(str (:title-prefix state) title)
(str (:default-title state)))]
(when r/is-client
(set! js/document.title title))
(assoc state :current-page page :title title))
:set-page (let [path x
_ (assert (string? path))
ps (:pages state)
p (get ps path (get ps "/index.html"))]
(recur state [:set-content p]))
:goto-page (let [path x
_ (assert (string? path))]
(when-some [h history]
(r/after-render (fn []
(.setToken h x)
(js/scrollTo 0 0)))
state)
(recur state [:set-page x]))))
(defn emit [event]
;; (dbg event)
(r/rswap! config demo-handler event))
(defn register-page [url comp title]
{:pre [(re-matches #"/.*[.]html" url)
(vector? comp)]}
(swap! config update-in [:pages]
assoc url {:content comp :title title}))
;;; History
(defn init-history [page]
(when-not history
(let [html5 (and page
(Html5History.isSupported)
(#{"http:" "https:"} js/location.protocol))]
(doto (set! history
(if html5
(doto (Html5History.)
(.setUseFragment false)
(.setPathPrefix (-> js/location.pathname
(string/replace
(re-pattern (str page "$")) "")
(string/replace #"/*$" ""))))
(History.)))
(evt/listen EventType.NAVIGATE #(when (.-isNavigation %)
(emit [:set-page (.-token %)])
(r/flush)))
(.setEnabled true))
(let [token (.getToken history)
p (if (and page (not html5) (empty? token))
page
token)]
(emit [:set-page p])))))
(defn to-relative [f]
(string/replace f #"^/" ""))
;;; Components
(defn link [props child]
[:a (assoc props
:href (-> props :href to-relative)
:on-click #(do (.preventDefault %)
(emit [:goto-page (:href props)])))
child])
(defn main-content []
(get-in @config [:current-page :content]))
;;; Main entry points
(defn start! [site-config]
(swap! config merge site-config)
(when r/is-client
(let [page-conf (when (exists? js/pageConfig)
(js->clj js/pageConfig :keywordize-keys true))
conf (swap! config merge page-conf)
{:keys [page-path body main-div]} conf]
(init-history page-path)
(r/render body (js/document.getElementById main-div)))))