From 03dcfd05b631a7ec55d7022c868603b492638e41 Mon Sep 17 00:00:00 2001
From: Alex Grintsvayg <git@grin.io>
Date: Thu, 24 Jan 2019 14:03:42 -0500
Subject: [PATCH] support anchors in url when iframed

---
 _layouts/spec.html | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/_layouts/spec.html b/_layouts/spec.html
index f92c5d9..4ade375 100644
--- a/_layouts/spec.html
+++ b/_layouts/spec.html
@@ -65,7 +65,12 @@
         headingSelector: 'h2, h3, h4, h5, h6',
         collapseDepth: 3,
         positionFixedSelector: ".toc",
-        onClick: (e) => { history.replaceState(null,null,e.target.href); }, // put anchor into url on toc link click
+        onClick: (e) => {  // put anchor into url on toc link click, and send to parent window if this is iframed
+          history.replaceState(null,null,e.target.href);
+          if (window.parent) {
+            window.parent.postMessage(e.target.href.substr(e.target.href.lastIndexOf('#')+1), "*");
+          }
+        },
       };
 
       tocbot.init(options);