From ca449f8087548f0286f7433af06f99fab3763bd8 Mon Sep 17 00:00:00 2001
From: Jeff Niu <jeffniu22@gmail.com>
Date: Mon, 18 Sep 2017 10:09:43 -0700
Subject: [PATCH] Bugfix: nvd3 tooltips do not disappear

---
 superset/assets/visualizations/nvd3_vis.js | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/superset/assets/visualizations/nvd3_vis.js b/superset/assets/visualizations/nvd3_vis.js
index 831b99710e86..5f8be80faaa4 100644
--- a/superset/assets/visualizations/nvd3_vis.js
+++ b/superset/assets/visualizations/nvd3_vis.js
@@ -478,6 +478,19 @@ function nvd3Vis(slice, payload) {
       .call(chart);
     }
 
+    // clean up tooltips when switching to another viz
+    const container = $(slice.selector);
+    if (!container.data('observed')) {
+      container.data('observed', true); // limit to one observer
+      const observer = new MutationObserver(() => {
+        container.data('observed', false);
+        $('.nvtooltip').remove();
+        observer.disconnect();
+      });
+      const cfg = { attributes: true, attributeFilter: ['class'] };
+      observer.observe(container[0], cfg);
+    }
+
     // on scroll, hide tooltips. throttle to only 4x/second.
     $(window).scroll(throttle(hideTooltips, 250));