♻️ Refactor html5 history.

frontend/src/uxbox/main.cljs

@@ -20,7 +20,6 @@
    [uxbox.main.ui.modal :refer [modal]]
    [uxbox.main.worker]
    [uxbox.util.dom :as dom]
-   [uxbox.util.html.history :as html-history]
    [uxbox.util.i18n :as i18n]
    [uxbox.util.theme :as theme]
    [uxbox.util.router :as rt]
@@ -29,38 +28,33 @@
 
 (declare reinit)
 
-(defn- on-navigate
+(defn on-navigate
   [router path]
   (let [match (rt/match router path)
         profile (:profile storage)]
     (cond
       (and (= path "") (not profile))
-      (st/emit! (rt/nav :login))
+      (rt/nav :login)
 
       (and (= path "") profile)
-      (st/emit! (rt/nav :dashboard-team {:team-id (:default-team-id profile)}))
+      (rt/nav :dashboard-team {:team-id (:default-team-id profile)})
 
       (nil? match)
-      (st/emit! (rt/nav :not-found))
+      (rt/nav :not-found)
 
       :else
-      (st/emit! #(assoc % :route match)))))
+      #(assoc % :route match))))
 
 (defn init-ui
   []
-  (let [router (rt/init ui/routes)
-        cpath (deref html-history/path)]
+  (st/emit! (rt/initialize-router ui/routes)
+            (rt/initialize-history on-navigate))
 
-    (st/emit! #(assoc % :router router))
-    (add-watch html-history/path ::main #(on-navigate router %4))
+  (when (:profile storage)
+    (st/emit! udu/fetch-profile))
 
-    (when (:profile storage)
-      (st/emit! udu/fetch-profile))
-
-    (mf/mount (mf/element ui/app) (dom/get-element "app"))
-    (mf/mount (mf/element modal) (dom/get-element "modal"))
-
-    (on-navigate router cpath)))
+  (mf/mount (mf/element ui/app) (dom/get-element "app"))
+  (mf/mount (mf/element modal) (dom/get-element "modal")))
 
 (defn ^:export init
   []
@@ -73,7 +67,6 @@
 
 (defn reinit
   []
-  (remove-watch html-history/path ::main)
   (mf/unmount (dom/get-element "app"))
   (mf/unmount (dom/get-element "modal"))
   (init-ui))

frontend/src/uxbox/main/fonts.cljs

@@ -83,7 +83,7 @@
                                (group-by :backend (vals db)))))
 (add-watch fontsdb "main"
            (fn [_ _ _ db]
-             (ts/schedule-on-idle #(materialize-fontsview db))))
+             (ts/schedule #(materialize-fontsview db))))
 
 (defn register!
   [backend fonts]

frontend/src/uxbox/main/ui/components/chunked_list.cljs

@@ -12,7 +12,7 @@
   (:require
    [beicon.core :as rx]
    [rumext.alpha :as mf]
-   [uxbox.util.timers :refer [schedule-on-idle]]))
+   [uxbox.util.timers :refer [schedule]]))
 
 (mf/defc chunked-list
   [{:keys [items children initial-size chunk-size]
@@ -34,7 +34,7 @@
                :pending-num (- pending-num chunk-size)}))
           (after-render [state]
             (when (pos? (:pending-num @state))
-              (let [sem (schedule-on-idle (fn [] (swap! state update-state)))]
+              (let [sem (schedule (fn [] (swap! state update-state)))]
                 #(rx/cancel! sem))))]
 
     (let [initial (mf/use-memo initial-state)

frontend/src/uxbox/util/browser_history.js

@@ -0,0 +1,49 @@
+/**
+ * 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
+ */
+
+"use strict";
+
+goog.provide("uxbox.util.browser_history");
+goog.require("goog.history.Html5History");
+
+
+goog.scope(function() {
+  const self = uxbox.util.browser_history;
+  const Html5History = goog.history.Html5History;
+
+  class TokenTransformer {
+    retrieveToken(pathPrefix, location) {
+      return location.pathname.substr(pathPrefix.length) + location.search;
+    }
+
+    createUrl(token, pathPrefix, location) {
+      return pathPrefix + token;
+    }
+  }
+
+  self.create = function() {
+    const instance = new Html5History(null, new TokenTransformer());
+    instance.setUseFragment(true);
+    return instance;
+  };
+
+  self.enable_BANG_ = function(instance) {
+    instance.setEnabled(true);
+  };
+
+  self.disable_BANG_ = function(instance) {
+    instance.setEnabled(false);
+  };
+
+  self.set_token_BANG_ = function(instance, token) {
+    instance.setToken(token);
+  }
+});

frontend/src/uxbox/util/components.cljs

@@ -9,7 +9,7 @@
   (:require
    [beicon.core :as rx]
    [rumext.alpha :as mf]
-   [uxbox.util.timers :refer [schedule-on-idle]]))
+   [uxbox.util.timers :refer [schedule]]))
 
 ;; TODO: this file is DEPRECATED (pending deletion)
 
@@ -33,7 +33,7 @@
                :pending-num (- pending-num chunk-size)}))
           (after-render [state]
             (when (pos? (:pending-num @state))
-              (let [sem (schedule-on-idle (fn [] (swap! state update-state)))]
+              (let [sem (schedule (fn [] (swap! state update-state)))]
                 #(rx/cancel! sem))))]
 
     (let [initial (mf/use-memo initial-state)

frontend/src/uxbox/util/html/TokenTransformer.js

@@ -1,60 +0,0 @@
-/**
- * TokenTransformer
- *
- * @author Paul Anderson <paul@andersonpaul.com>, 2018
- * @license BSD License <https://opensource.org/licenses/BSD-2-Clause>
- */
-
-goog.provide('uxbox.util.html.TokenTransformer');
-goog.require('goog.history.Html5History');
-
-goog.scope(function() {
-  /**
-   * A goog.history.Html5History.TokenTransformer implementation that
-   * includes the query string in the token.
-   *
-   * The implementation of token<->url transforms in
-   * `goog.history.Html5History`, when useFragment is false and no custom
-   * transformer is supplied, assumes that a token is equivalent to
-   * `window.location.pathname` minus any configured path prefix. Since
-   * bide allows constructing urls that include a query string, we want
-   * to be able to store those as tokens.
-   *
-   * Addresses funcool/bide#15.
-   *
-   * @constructor
-   * @implements {goog.history.Html5History.TokenTransformer}
-   */
-  uxbox.util.html.TokenTransformer = function () {};
-
-  /**
-   * Retrieves a history token given the path prefix and
-   * `window.location` object.
-   *
-   * @param {string} pathPrefix The path prefix to use when storing token
-   *     in a path; always begin with a slash.
-   * @param {Location} location The `window.location` object.
-   *     Treat this object as read-only.
-   * @return {string} token The history token.
-   */
-  uxbox.util.html.TokenTransformer.prototype.retrieveToken = function(pathPrefix, location) {
-    return location.pathname.substr(pathPrefix.length) + location.search;
-  };
-
-  /**
-   * Creates a URL to be pushed into HTML5 history stack when storing
-   * token without using hash fragment.
-   *
-   * @param {string} token The history token.
-   * @param {string} pathPrefix The path prefix to use when storing token
-   *     in a path; always begin with a slash.
-   * @param {Location} location The `window.location` object.
-   *     Treat this object as read-only.
-   * @return {string} url The complete URL string from path onwards
-   *     (without {@code protocol://host:port} part); must begin with a
-   *     slash.
-   */
-  uxbox.util.html.TokenTransformer.prototype.createUrl = function(token, pathPrefix, location) {
-    return pathPrefix + token;
-  };
-});

frontend/src/uxbox/util/html/history.cljs

@@ -1,31 +0,0 @@
-;; 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) 2019 Andrey Antukh <niwi@niwi.nz>
-
-(ns uxbox.util.html.history
-  "A singleton abstraction for the html5 fragment based history."
-  (:require [goog.events :as e])
-  (:import uxbox.util.html.TokenTransformer
-           goog.history.Html5History
-           goog.history.EventType))
-
-(defonce ^:private +instance+
-  (doto (Html5History. nil (TokenTransformer.))
-    (.setUseFragment true)
-    (.setEnabled true)))
-
-(defonce path (atom (.getToken +instance+)))
-
-(defonce ^:private +instance-sem+
-  (e/listen +instance+ EventType.NAVIGATE
-            #(reset! path (.-token %))))
-
-(defn set-path!
-  [path]
-  (.setToken +instance+ path))
-
-(defn replace-path!
-  [path]
-  (.replaceToken +instance+ path))

frontend/src/uxbox/util/router.cljs

@@ -7,16 +7,19 @@
 (ns uxbox.util.router
   (:refer-clojure :exclude [resolve])
   (:require
+   [beicon.core :as rx]
+   [rumext.alpha :as mf]
    [reitit.core :as r]
+   [goog.events :as e]
    [cuerdas.core :as str]
    [potok.core :as ptk]
-   [uxbox.common.data :as d]
-   [uxbox.util.html.history :as html-history])
+   [uxbox.util.browser-history :as bhistory]
+   [uxbox.common.data :as d])
   (:import
    goog.Uri
    goog.Uri.QueryData))
 
-;; --- API
+;; --- Router API
 
 (defn- parse-query-data
   [^QueryData qdata]
@@ -50,10 +53,17 @@
          (.setQueryData uri qdt)
          (.toString uri))))))
 
-(defn init
+(defn create
   [routes]
   (r/router routes))
 
+(defn initialize-router
+  [routes]
+  (ptk/reify ::initialize-router
+    ptk/UpdateEvent
+    (update [_ state]
+      (assoc state :router (create routes)))))
+
 (defn query-params
   "Given goog.Uri, read query parameters into Clojure map."
   [^goog.Uri uri]
@@ -63,13 +73,6 @@
          (map (juxt keyword #(.get q %)))
          (into {}))))
 
-(defn navigate!
-  ([router id] (navigate! router id {} {}))
-  ([router id params] (navigate! router id params {}))
-  ([router id params qparams]
-   (-> (resolve router id params qparams)
-       (html-history/set-path!))))
-
 (defn match
   "Given routing tree and current path, return match with possibly
   coerced parameters. Return nil if no match found."
@@ -87,8 +90,10 @@
 (deftype Navigate [id params qparams]
   ptk/EffectEvent
   (effect [_ state stream]
-    (let [router (:router state)]
-      (navigate! router id params qparams))))
+    (let [router  (:router state)
+          history (:history state)
+          path    (resolve router id params qparams)]
+      (bhistory/set-token! history path))))
 
 (defn nav
   ([id] (nav id nil nil))
@@ -99,3 +104,30 @@
 
 (def navigate nav)
 
+;; --- History API
+
+(defn initialize-history
+  [on-change]
+  (ptk/reify ::initialize-history
+    ptk/UpdateEvent
+    (update [_ state]
+      (let [history (bhistory/create)]
+        (assoc state :history history)))
+
+    ptk/WatchEvent
+    (watch [_ state stream]
+      (let [stoper  (rx/filter (ptk/type? ::initialize-history) stream)
+            history (:history state)
+            router  (:router state)]
+        (->> (rx/create (fn [sink]
+                          (let [key (e/listen history "navigate" #(sink (.-token %)))]
+                            (bhistory/enable! history)
+                            (fn []
+                              (bhistory/disable! history)
+                              (e/unlistenByKey key)))))
+             (rx/map #(on-change router %))
+             (rx/take-until stoper))))))
+
+
+
+

frontend/src/uxbox/util/timers.cljs

@@ -2,7 +2,10 @@
 ;; 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) 2016-2019 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) 2020 UXBOX Labs SL
 
 (ns uxbox.util.timers
   (:require [beicon.core :as rx]))