From f934cc57a2e06f75e2cd076c1fdcdb24cc0f44d7 Mon Sep 17 00:00:00 2001
From: Alexander Ebert <ebert@woltlab.com>
Date: Sun, 8 Feb 2015 11:07:04 +0100
Subject: [PATCH] Using MutationObserver for supported browsers

---
 wcfsetup/install/files/js/WCF.js | 24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/wcfsetup/install/files/js/WCF.js b/wcfsetup/install/files/js/WCF.js
index a327938d5e..5d796ea34c 100755
--- a/wcfsetup/install/files/js/WCF.js
+++ b/wcfsetup/install/files/js/WCF.js
@@ -5951,7 +5951,29 @@ WCF.DOMNodeRemovedHandler = {
 	_bindListener: function() {
 		if (this._isListening) return;
 		
-		$(document).bind('DOMNodeRemoved', $.proxy(this._executeCallbacks, this));
+		if (window.MutationObserver) {
+			var $mutationObserver = new MutationObserver((function(mutations) {
+				var $triggerEvent = false;
+				
+				mutations.forEach((function(mutation) {
+					if (mutation.removedNodes.length) {
+						$triggerEvent = true;
+					}
+				}).bind(this));
+				
+				if ($triggerEvent) {
+					this._executeCallbacks({ });
+				}
+			}).bind(this));
+			
+			$mutationObserver.observe(document.body, {
+				childList: true,
+				subtree: true
+			});
+		}
+		else {
+			$(document).bind('DOMNodeRemoved', $.proxy(this._executeCallbacks, this));
+		}
 		
 		this._isListening = true;
 	},
-- 
2.20.1