From 32248e9e3643c7dbcbcdbb9fa5079d7cda73f89d Mon Sep 17 00:00:00 2001
From: Brandon Thomas <echelon@gmail.com>
Date: Sun, 30 Oct 2016 03:04:57 -0400
Subject: [PATCH] Fix UI "clear" button to clear URL state

---
 frontend/main.ts | 3 ++-
 frontend/url.ts  | 7 +++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/frontend/main.ts b/frontend/main.ts
index ca0441f7df..9ff92f081c 100644
--- a/frontend/main.ts
+++ b/frontend/main.ts
@@ -8,7 +8,7 @@ declare var $: any;
 
 import { setup_animation } from "./animation";
 import Audio from "./audio";
-import { decode_url_hash, get_audio_api_url, set_url_hash } from "./url";
+import { clear_url_hash, decode_url_hash, get_audio_api_url, set_url_hash } from "./url";
 import { RawSentence, FilteredSentence } from "./sentence";
 
 const INPUT = 'input#jungle';
@@ -75,6 +75,7 @@ function install_events() {
   $('button#clear').on('click', function(ev: any): any {
     $(INPUT).val(''); // ESC key.
     (<any>window).audio.stop();
+    clear_url_hash();
     ev.preventDefault();
     return false;
   });
diff --git a/frontend/url.ts b/frontend/url.ts
index 93b63039bf..a1fca25511 100644
--- a/frontend/url.ts
+++ b/frontend/url.ts
@@ -13,6 +13,13 @@ export function get_audio_api_url(sentence: FilteredSentence) : string {
   return `/speak?v=trump&vol=3&s=${encoded}`;
 }
 
+/**
+ * Reset the URL.
+ */
+export function clear_url_hash() {
+  window.history.replaceState(null, null, '/');
+}
+
 /**
  * Sentence -> Persistent URL hash
  */