[front/feat] add active style

src/main/frontend/app.cljs

@@ -1,74 +1,121 @@
 (ns frontend.app
-  (:require [reagent.core :as r]
-            [reagent.dom.client :as rdom]
+  (:require [reagent.dom.client :as rdom]
             [reitit.frontend :as rf]
             [reitit.frontend.easy :as rfe]
+            [reitit.frontend.controllers :as rfc]
             [spec-tools.data-spec :as ds]
-            ))
-
+            [re-frame.core :refer [dispatch dispatch-sync reg-event-db clear-subscription-cache! reg-event-fx reg-sub
+                                   subscribe ]]))
 
 (defn home-page []
   [:div
    :h2 "Home"]
   [:button
    {:type "button"
-    :on-click #(rfe/push-state ::item {:id 3})}
-   "Item 3"])
+    :on-click #(rfe/push-state :item {:id 431038004})}
+   "Item 431038004"])
 
 (defn about-page []
   [:div
    [:h2 "About"]
    [:ul
-    [:li [:a {:href "stub"} "Source code"]]]
+    [:li [:a {:href "stub"} "Source code"]]]])
 
-   ])
-
-(defn item-page [match]
-  (let [{:keys [path query]} (:parameters match)
-        {:keys [id]} path]
+(defn item-page []
+  (let [current-route @(subscribe [::current-route])
+        id (get-in current-route [:path-params :id])]
     [:div
-     [:h2 "Selected item " id]
-     (if (:foo query)
-       [:p "Optional foo query param: " (:foo query)])]))
+     [:h2 "Selected item " id]]))
+
+
+(def routes
+  [["/"
+    [""
+     {:name :frontpage
+      :view home-page
+      :link-text "Home"}]
+    ["about"
+     {:name :about
+      :view about-page
+      :link-text "About"}]
+    ["item/:id"
+     {:name :item
+      :view item-page
+      :link-text "Item"
+      :parameters {:path {:id int?}
+                   :query {(ds/opt :foo) keyword?}}}]]])
+
+(def router
+  (rf/router
+    routes
+    ))
+
+(reg-event-db :initialize-db
+  (fn [_ _]
+    {:set-active-page nil}))
+
+(reg-event-fx
+ :set-active-page
+ (fn [{:keys [db]} [_ {:keys [page id]}]]
+   (let [set-page (assoc db :active-page page)]
+     (case page
+       ;; -- URL @ "/" --------------------------------------------------------
+       "/" {:db         set-page}))))
+
+(reg-sub ::current-route
+        (fn [db]
+        (:current-route db)))
+
+(reg-event-db ::navigated
+            (fn [db [_ new-match]]
+                (let [old-match   (:current-route db)
+                    controllers (rfc/apply-controllers (:controllers old-match) new-match)]
+                (assoc db :current-route (assoc new-match :controllers controllers)))))
+
+
+(def history
+  #(dispatch [:set-active-page {:page      (:path %)
+                                :id (get-in % [:path-params :id])}]))
+
+(defn on-navigate [new-match]
+  (when new-match
+    (dispatch [::navigated new-match])))
+
+(defn nav [{:keys [current-route]}]
+  (js/console.log current-route)
+  (let [active #(when (= % (-> current-route :data :name)) "> ")]
+    [:ul {:class "nav flex flex-col overflow-hidden"}
+     [:li
+      [:a {:href (rfe/href :frontpage)} (active :frontpage) "Home"]]
+     [:li
+      [:a {:href (rfe/href :about)} (active :about) "About"]]
+     [:li
+      [:a {:href (rfe/href :item {:id 233})} (active :item) "Item 233"]]]))
 
-(defonce match (r/atom nil))
 
 (defn current-page []
+  (let [current-route @(subscribe [::current-route])]
     [:div {:class "container p-2 mx-auto"}
      [:div {:class "flex flex-row flex-wrap py-4"}
       [:div {:class "w-full sm:w-1/3 md:w-1/4 px-2"}
        [:div {:class "sticky top-0 p-4 bg-slate-300 rounded-xl w-full"}
-      [:ul {:class "nav flex flex-col overflow-hidden"}
-       [:li [:a {:href (rfe/href ::frontpage)} "Home"]]
-       [:li [:a {:href (rfe/href ::about)} "About"]]
-       [:li [:a {:href (rfe/href ::item {:id 1})} "Item 1"]]]]]
-    (if @match
-      (let [view (:view (:data @match))]
-        [:div {:class "w-full sm:w-2/3 md:w-3/4 pt-1 px-2"} [view @match]]))]])
+        [nav {:current-route current-route}]]]
+      (when current-route
+        [:div {:class "w-full sm:w-2/3 md:w-3/4 pt-1 px-2"}
+         [(-> current-route :data :view)]])]]))
 
-(def routes
-  [["/"
-    {:name ::frontpage
-     :view home-page}]
-   ["/about"
-    {:name ::about
-     :view about-page}]
-   ["/item/:id"
-    {:name ::item
-     :view item-page
-     :parameters {:path {:id int?}
-                  :query {(ds/opt :foo) keyword?}}}]
-   ])
 
 (defonce root (rdom/create-root (js/document.getElementById "app")))
 
 (defn ^:dev/after-load start []
-  (rdom/render root [current-page] ))
+  (rdom/render root [current-page {:router router}] ))
 
 (defn init []
+  (clear-subscription-cache!)
+  (dispatch-sync [:initialize-db])
   (rfe/start!
-   (rf/router routes)
-   (fn [m] (reset! match m))
+   router
+   on-navigate
    {:use-fragment true})
   (js/console.log "init")
   (start))