Add ability to resume route on page reload

frontend/src/components/TopLevel.component.js

@@ -59,6 +59,7 @@ class TopLevelComponent extends Component {
     async vue_on_create() {
         // Listen for navigation changes.
         this.router_subscription = router.subscribe((path, args) => this.on_route_change(path, args))
+        this.current_route = router.current_route
 
         const url_params = new URLSearchParams(window.location.search)
         if ( url_params.has('then') ) {

frontend/src/module/routing.js

@@ -10,6 +10,9 @@ class Router {
      */
     route_args = undefined
 
+    /** The currently navigated route. */
+    current_route = undefined
+
     /**
      * List of callback functions listening for route changes.
      * @type {function[]}
@@ -22,6 +25,17 @@ class Router {
      */
     history = []
 
+    /** Initialize the router and determine the current page. */
+    constructor() {
+        try {
+            const route = location.href.split(APP_BASE_PATH).filter(Boolean)[0].split(/[#?]/)[0]
+            if ( route ) {
+                this.navigate(route, {})
+            }
+        } catch (e) {}
+    }
+
+
     /**
      * Returns the APP_BASE_PATH of the application.
      * @return {string}
@@ -39,6 +53,7 @@ class Router {
         this.route_args = args
         this.history.push({path, args})
         window.history.pushState({}, path, this.build_url(path))
+        this.current_route = path
         this.subscribers.forEach(sub => sub(path, args))
     }