From c50f463bc12da7e3a5de490b714b4ff1ea8d3e56 Mon Sep 17 00:00:00 2001
From: Shin'ya Ueoka <ueokande@i-beam.org>
Date: Mon, 21 Aug 2017 21:01:29 +0900
Subject: add follow tests

---
 src/content/follow.js | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

(limited to 'src/content')

diff --git a/src/content/follow.js b/src/content/follow.js
index c0b7a44..d678351 100644
--- a/src/content/follow.js
+++ b/src/content/follow.js
@@ -105,6 +105,20 @@ export default class Follow {
   }
 
   static getTargetElements(doc) {
-    return doc.querySelectorAll('a')
+    let all = doc.querySelectorAll('a');
+    let filtered = Array.prototype.filter.call(all, (e) => {
+      return Follow.isVisibleElement(e);
+    });
+    return filtered;
+  }
+
+  static isVisibleElement(element) {
+    var style = window.getComputedStyle(element);
+    if (style.display === 'none') {
+      return false;
+    } else if (style.visibility === 'hidden') {
+      return false;
+    }
+    return true;
   }
 }
-- 
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