reduce overhead in hash set/get

js/App.js

@@ -18,6 +18,15 @@ const App = {
    is_prefs: false,
    LABEL_BASE_INDEX: -1024,
    _translations: {},
+   Hash: {
+      get: function() {
+         return dojo.queryToObject(window.location.hash.substring(1));
+      },
+      set: function(params) {
+         const obj = dojo.queryToObject(window.location.hash.substring(1));
+         window.location.hash = dojo.objectToQuery({...obj, ...params});
+      }
+   },
    l10n: {
       ngettext: function(msg1, msg2, n) {
          return self.__((parseInt(n) > 1) ? msg2 : msg1);
@@ -1269,6 +1278,6 @@ const App = {
          default:
             console.log("quickMenuGo: unknown action: " + opid);
       }
-   }
+   },
 }
 

js/Feeds.js

@@ -236,12 +236,12 @@ const	Feeds = {
 		//document.onkeypress = (event) => { return App.hotkeyHandler(event) };
 		window.onresize = () => { Headlines.scrollHandler(); }
 
-		/* global hash_get */
+		const hash = App.Hash.get();
-		const hash_feed_id = hash_get('f');
-		const hash_feed_is_cat = hash_get('c') == "1";
 
-		if (hash_feed_id != undefined) {
+		console.log('got hash', hash);
-			this.open({feed: hash_feed_id, is_cat: hash_feed_is_cat});
+
+		if (hash.f != undefined) {
+			this.open({feed: parseInt(hash.f), is_cat: parseInt(hash.c)});
 		} else {
 			this.openDefaultFeed();
 		}
@@ -305,9 +305,12 @@ const	Feeds = {
 	setActive: function(id, is_cat) {
 		console.log('setActive', id, is_cat);
 
-		/* global hash_set */
+		if ('requestIdleCallback' in window)
-		hash_set('f', id);
+			window.requestIdleCallback(() => {
-		hash_set('c', is_cat ? 1 : 0);
+				App.Hash.set({f: id, c: is_cat ? 1 : 0});
+			});
+		else
+			App.Hash.set({f: id, c: is_cat ? 1 : 0});
 
 		this._active_feed_id = id;
 		this._active_feed_is_cat = is_cat;

js/tt-rss.js

@@ -69,15 +69,3 @@ require(["dojo/_base/kernel",
 	});
 });
 
-/* exported hash_get */
-function hash_get(key) {
-	const obj = dojo.queryToObject(window.location.hash.substring(1));
-	return obj[key];
-}
-
-/* exported hash_set */
-function hash_set(key, value) {
-	const obj = dojo.queryToObject(window.location.hash.substring(1));
-	obj[key] = value;
-	window.location.hash = dojo.objectToQuery(obj);
-}