From 32e7a8adba33407ceff3c3520a76f063cc319b86 Mon Sep 17 00:00:00 2001
From: Rob Wu <rob@robwu.nl>
Date: Mon, 20 Jul 2015 13:10:51 +0200
Subject: [PATCH] Don't reload after updating if a tab is in use

---
 extensions/chromium/pdfHandler.html    |  1 +
 extensions/chromium/suppress-update.js | 29 ++++++++++++++++++++++++++
 2 files changed, 30 insertions(+)
 create mode 100644 extensions/chromium/suppress-update.js

diff --git a/extensions/chromium/pdfHandler.html b/extensions/chromium/pdfHandler.html
index 02a82fa1c..a9bdca160 100644
--- a/extensions/chromium/pdfHandler.html
+++ b/extensions/chromium/pdfHandler.html
@@ -22,3 +22,4 @@ limitations under the License.
 <script src="pdfHandler-v2.js"></script>
 <script src="pdfHandler-vcros.js"></script>
 <script src="pageAction/background.js"></script>
+<script src="suppress-update.js"></script>
diff --git a/extensions/chromium/suppress-update.js b/extensions/chromium/suppress-update.js
new file mode 100644
index 000000000..0f985f882
--- /dev/null
+++ b/extensions/chromium/suppress-update.js
@@ -0,0 +1,29 @@
+/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
+/*
+Copyright 2015 Mozilla Foundation
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+/* globals chrome */
+
+'use strict';
+
+// Do not reload the extension when an update becomes available, UNLESS the PDF
+// viewer is not displaying any PDF files. Otherwise the tabs would close, which
+// is quite disruptive (crbug.com/511670).
+chrome.runtime.onUpdateAvailable.addListener(function() {
+    if (chrome.extension.getViews({type: 'tab'}).length === 0) {
+        chrome.runtime.reload();
+    }
+});