From 28f8a8dc8a4b15446c486c1b438dd2f078cdbbd9 Mon Sep 17 00:00:00 2001
From: Frode Petterson <frode.andre.petterson@gmail.com>
Date: Mon, 20 Apr 2015 15:37:49 +0200
Subject: [PATCH] Create a spaceholder when resizing iframes.

---
 js/h5p-resizer.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/js/h5p-resizer.js b/js/h5p-resizer.js
index 6318fc8..3d83db6 100644
--- a/js/h5p-resizer.js
+++ b/js/h5p-resizer.js
@@ -46,6 +46,11 @@
    */
   actionHandlers.prepareResize = function (iframe, data, respond) {
     responseData = {};
+    
+    // Create spaceholder and insert after iframe.
+    var spaceholder = document.createElement('div');
+    spaceholder.style.height = (iframe.clientHeight - 1) + 'px';
+    iframe.parentNode.insertBefore(spaceholder, iframe.nextSibling);
 
     // Reset iframe height, in case content has shrinked.
     iframe.style.height = '1px';
@@ -64,6 +69,7 @@
   actionHandlers.resize = function (iframe, data, respond) {
     // Resize iframe so all content is visible.
     iframe.style.height = data.height + 'px';
+    iframe.nextSibling.remove();
   };
 
   /**