Bug 1502130 - Prevent handling contentSearchUI events if input element is no longer present r=ursula,k88hudson

Differential Revision: https://phabricator.services.mozilla.com/D9828
2018-10-26 15:12:25 +00:00
parent e12de2a2ac
commit 1e240d98d3
1 changed files with 5 additions and 0 deletions
--- a/browser/base/content/contentSearchUI.js
+++ b/browser/base/content/contentSearchUI.js
@@ -223,6 +223,11 @@ ContentSearchUIController.prototype = {
  },

  handleEvent(event) {
+    // The event handler is triggered by external events while the search
+    // element may no longer be present
+    if (!document.contains(this.input)) {
+      return;
+    }
    this["_on" + event.type[0].toUpperCase() + event.type.substr(1)](event);
  },