From c770fb90142d01667d92ae769382ecda3d7e23c8 Mon Sep 17 00:00:00 2001
From: Albert Gasset <albertgasset@fsfe.org>
Date: Mon, 1 Oct 2018 17:49:55 +0200
Subject: [PATCH] MOBILE-2611 utils: Function to check whether HTML content is
 blank

---
 src/providers/utils/text.ts | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/src/providers/utils/text.ts b/src/providers/utils/text.ts
index 6fa91d8be..3ee32224e 100644
--- a/src/providers/utils/text.ts
+++ b/src/providers/utils/text.ts
@@ -427,6 +427,23 @@ export class CoreTextUtilsProvider {
         return /<[a-z][\s\S]*>/i.test(text);
     }
 
+    /**
+     * Check if HTML content is blank.
+     *
+     * @param {string} content HTML content.
+     * @return {boolean} True if the string does not contain actual content: text, images, etc.
+     */
+    htmlIsBlank(content: string): boolean {
+        if (!content) {
+            return true;
+        }
+
+        const div = document.createElement('div');
+        div.innerHTML = content;
+
+        return div.textContent === '' && div.querySelector('img, object, hr') === null;
+    }
+
     /**
      * Check if a text contains Unicode long chars.
      * Using as threshold Hex value D800