From 0dd81fe13489bbb1455ba748573523dd73798608 Mon Sep 17 00:00:00 2001
From: Andrew Ozz <azaozz@git.wordpress.org>
Date: Sun, 15 Feb 2015 18:18:06 +0000
Subject: [PATCH] TinyMCE wpView: fire `nodeChanged` when an embedded iframe is
 resized so we can adjust the editor height and other UI components. Props
 iseulde, fixes #30646.

git-svn-id: https://develop.svn.wordpress.org/trunk@31466 602fd350-edb4-49c9-b593-d223f7449a82
---
 src/wp-includes/js/mce-view.js | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/wp-includes/js/mce-view.js b/src/wp-includes/js/mce-view.js
index 209a7b9e20..5f4d846999 100644
--- a/src/wp-includes/js/mce-view.js
+++ b/src/wp-includes/js/mce-view.js
@@ -207,8 +207,18 @@ window.wp = window.wp || {};
 						iframeDoc.close();
 
 						resize = function() {
+							var $iframe, iframeDocHeight;
+
 							// Make sure the iframe still exists.
-							iframe.contentWindow && $( iframe ).height( $( iframeDoc.body ).height() );
+							if ( iframe.contentWindow ) {
+								$iframe = $( iframe );
+								iframeDocHeight = $( iframeDoc.body ).height();
+
+								if ( $iframe.height() !== iframeDocHeight ) {
+									$iframe.height( iframeDocHeight );
+									editor.nodeChanged();
+								}
+							}
 						};
 
 						if ( MutationObserver ) {