From 063ae2d65b39b7571a008b83e0322d37a5b15150 Mon Sep 17 00:00:00 2001
From: Lisa Wagner <github@lisawagner.li>
Date: Tue, 10 Nov 2015 10:38:09 +0100
Subject: [PATCH] #33 adding check for repeated 'newResults' event

---
 SearchResultListVis/js/msgListeners.js | 38 ++++++++++++++------------
 1 file changed, 21 insertions(+), 17 deletions(-)

diff --git a/SearchResultListVis/js/msgListeners.js b/SearchResultListVis/js/msgListeners.js
index bdfa022..94a94d5 100644
--- a/SearchResultListVis/js/msgListeners.js
+++ b/SearchResultListVis/js/msgListeners.js
@@ -1,3 +1,5 @@
+var lastProcessedQueryID;
+
 window.onmessage = function (msg) {
     if (msg.data.event) {
         if (msg.data.event === 'eexcess.queryTriggered') {
@@ -5,29 +7,31 @@ window.onmessage = function (msg) {
             $(showLoadingBar());
         }
 
-        else if (msg.data.event === 'eexcess.newResults') {
+        if (msg.data.event && msg.data.event === 'eexcess.newResults') {
             // new results are available in msg.data.data
-
-            $(addIsotopeGrid(msg));
-            $(logResultItemClicks(msg));
-
-            //make sure elements exist
-            var checkExist = setInterval(function() {
-                if ($('.eexcess-isotope-grid-item').length) {
-                    clearInterval(checkExist);
-                    $(addFilterCounter);
-                    $(truncateTitles);
-                }
-            }, 10);
+            if (lastProcessedQueryID && lastProcessedQueryID === msg.data.data.queryID) {
+                // data already processed, do nothing
+            } else {
+                $(addIsotopeGrid(msg));
+                $(logResultItemClicks(msg));
+
+                //make sure elements exist
+                var checkExist = setInterval(function () {
+                    if ($('.eexcess-isotope-grid-item').length) {
+                        clearInterval(checkExist);
+                        $(addFilterCounter);
+                        $(truncateTitles);
+                    }
+                }, 10);
+
+                lastProcessedQueryID = msg.data.data.queryID;
+            }
 
         } else if (msg.data.event === 'eexcess.error') {
             $(showError(msg.data.data));
         }
 
-        }
-
-
-
+    }
 
 
 }