From 2825535ae279610441caf5f1857d3dd348bbfcf7 Mon Sep 17 00:00:00 2001
From: John Berlin <n0tan3rd@gmail.com>
Date: Fri, 1 Jun 2018 18:13:43 -0400
Subject: [PATCH] Added FontFace to wombat overrides,
 https://drafts.csswg.org/css-font-loading/#FontFace-interface (#340)

---
 pywb/static/wombat.js | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/pywb/static/wombat.js b/pywb/static/wombat.js
index 139c8b1c..336fcf5b 100644
--- a/pywb/static/wombat.js
+++ b/pywb/static/wombat.js
@@ -2073,6 +2073,30 @@ var _WBWombat = function($wbwindow, wbinfo) {
         }
     }
 
+    //============================================
+    function initFontFaceOverride ($wbwindow) {
+        if (!$wbwindow.FontFace || $wbwindow.FontFace.__wboverriden__) {
+            return;
+        }
+        // per https://drafts.csswg.org/css-font-loading/#FontFace-interface and Chrome, FF, Opera Support
+        var origFontFace = $wbwindow.FontFace;
+        $wbwindow.FontFace = (function (FontFace) {
+            return function (family, source, descriptors) {
+                var rwSource = source;
+                if (source != null) {
+                    if (typeof source !== 'string') {
+                        source = source.toString(); // is CSSOMString or ArrayBuffer or ArrayBufferView
+                    }
+                    rwSource = rewrite_inline_style(source);
+                }
+                return new FontFace(family, rwSource, descriptors);
+            }
+        })($wbwindow.FontFace);
+        $wbwindow.FontFace.prototype = origFontFace.prototype;
+        Object.defineProperty($wbwindow.FontFace.prototype, "constructor", {value: $wbwindow.FontFace});
+        $wbwindow.FontFace.__wboverriden__ = true;
+    }
+
     //============================================
     function init_wombat_loc(win) {
 
@@ -3354,6 +3378,9 @@ var _WBWombat = function($wbwindow, wbinfo) {
             // Audio
             init_audio_override();
 
+            // FontFace
+            initFontFaceOverride($wbwindow);
+
             // Worker override (experimental)
             init_web_worker_override();
             init_service_worker_override();