From e9450c941b60915869364894c8f2e3a0cef16ef6 Mon Sep 17 00:00:00 2001
From: "JiaLi.Passion" <JiaLi.Passion@gmail.com>
Date: Fri, 18 Aug 2017 03:40:45 +0900
Subject: [PATCH] feat(cordova): fix #868, patch cordova FileReader

---
 lib/extra/cordova.ts | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/lib/extra/cordova.ts b/lib/extra/cordova.ts
index 6331f73eb..5f8518ce5 100644
--- a/lib/extra/cordova.ts
+++ b/lib/extra/cordova.ts
@@ -21,4 +21,21 @@ Zone.__load_patch('cordova', (global: any, Zone: ZoneType, api: _ZonePrivate) =>
           return nativeExec.apply(self, args);
         });
   }
+});
+
+Zone.__load_patch('cordova.FileReader', (global: any, Zone: ZoneType, api: _ZonePrivate) => {
+  if (global.cordova && typeof global['FileReader'] !== 'undefined') {
+    document.addEventListener('deviceReady', () => {
+      const FileReader = global['FileReader'];
+      ['abort', 'error', 'load', 'loadstart', 'loadend', 'progress'].forEach(prop => {
+        const eventNameSymbol = Zone.__symbol__('ON_PROPERTY' + prop);
+        Object.defineProperty(FileReader.prototype, eventNameSymbol, {
+          configurable: true,
+          get: function() {
+            return this._realReader && this._realReader[eventNameSymbol];
+          }
+        });
+      });
+    });
+  }
 });
\ No newline at end of file