Fix history requesting for MUC when joining

app/widgets/Chat/Chat.php

@@ -800,5 +800,6 @@ class Chat extends \Movim\Widget\Base
 
     function display()
     {
+        $this->view->assign('pagination', $this->_pagination);
     }
 }

app/widgets/Chat/chat.js

@@ -245,7 +245,8 @@ var Chat = {
     setScrollBehaviour : function() {
         var discussion = document.querySelector('#chat_widget div.contained');
         discussion.onscroll = function() {
-            if(this.scrollTop < 1) {
+            if(this.scrollTop < 1
+            && discussion.querySelectorAll('ul li p').length >= Chat.pagination) {
                 Chat_ajaxGetHistory(Chat.getTextarea().dataset.jid, Chat.currentDate);
             }
 

app/widgets/Chat/chat.tpl

@@ -1,4 +1,7 @@
 <div id="chat_widget" style="background-color: #EEE;">
+    <script type="text/javascript">
+        Chat.pagination = {$pagination};
+    </script>
     {$c->prepareEmpty()}
 </div>