From 378c49c2d8542297c4565ebc1e0c0a8aa27e71b9 Mon Sep 17 00:00:00 2001
From: Yury Delendik <ydelendik@mozilla.com>
Date: Tue, 7 Jan 2014 10:59:54 -0600
Subject: [PATCH] Avoiding double draw() calls
---
web/page_view.js | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/web/page_view.js b/web/page_view.js
index d897d21c4..2725b9f12 100644
--- a/web/page_view.js
+++ b/web/page_view.js
@@ -414,12 +414,17 @@ var PageView = function pageView(container, id, scale,
this.draw = function pageviewDraw(callback) {
var pdfPage = this.pdfPage;
+ if (this.pagePdfPromise) {
+ return;
+ }
if (!pdfPage) {
var promise = PDFView.getPage(this.id);
promise.then(function(pdfPage) {
+ delete this.pagePdfPromise;
this.setPdfPage(pdfPage);
this.draw(callback);
}.bind(this));
+ this.pagePdfPromise = promise;
return;
}