From 5cf5b56f24f63b8dd5c6ff7f744e4a850a926120 Mon Sep 17 00:00:00 2001
From: Jennifer Mourek <jennifer.mourek@icinga.com>
Date: Thu, 26 Oct 2017 11:49:54 +0200
Subject: [PATCH] events: Suspend autorefresh when document not visible

refs #2761
---
 public/js/icinga/events.js | 16 ++++++++++------
 public/js/icinga/loader.js |  2 ++
 2 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/public/js/icinga/events.js b/public/js/icinga/events.js
index be71b06c1..483d0ddb2 100644
--- a/public/js/icinga/events.js
+++ b/public/js/icinga/events.js
@@ -177,12 +177,16 @@
         onVisibilityChange: function (event) {
             var icinga = event.data.self.icinga;
 
-            if !!(document.visibilityState === undefined || document.visibilityState === 'visible') {
-                icinga.logger.info('Page visible, enabling auto-refresh');
-                icinga.loader.enableAutorefresh()
-            } else {
-                icinga.logger.info('Page invisible, disabling auto-refresh');
-                icinga.loader.disableAutorefresh()
+            if (icinga.loader.autorefreshEnabled === true || icinga.autorefreshSuspended === true) {
+                if (document.visibilityState === undefined || document.visibilityState === 'visible') {
+                    icinga.autorefreshSuspended = false;
+                    icinga.logger.info('Page visible, enabling auto-refresh');
+                    icinga.loader.enableAutorefresh()
+                } else {
+                    icinga.autorefreshSuspended = true;
+                    icinga.logger.info('Page invisible, disabling auto-refresh');
+                    icinga.loader.disableAutorefresh()
+                }
             }
         },
 
diff --git a/public/js/icinga/loader.js b/public/js/icinga/loader.js
index 4b19ef15d..0daff0392 100644
--- a/public/js/icinga/loader.js
+++ b/public/js/icinga/loader.js
@@ -31,6 +31,8 @@
         this.iconCache = {};
 
         this.autorefreshEnabled = true;
+
+        this.autorefreshSuspended = false;
     };
 
     Icinga.Loader.prototype = {