From 03359b48d30dcb8e34d2ac2cadf8085c095ae5aa Mon Sep 17 00:00:00 2001
From: Simon Michael <simon@joyful.com>
Date: Tue, 3 Jan 2012 12:14:22 +0000
Subject: [PATCH] web: prevent flot js error which broke add form fields after
 adding a transaction (#72)

---
 hledger-web/Hledger/Web/Handlers.hs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/hledger-web/Hledger/Web/Handlers.hs b/hledger-web/Hledger/Web/Handlers.hs
index 99ebfa7bd..4579bbc5f 100644
--- a/hledger-web/Hledger/Web/Handlers.hs
+++ b/hledger-web/Hledger/Web/Handlers.hs
@@ -389,11 +389,14 @@ $forall p <- tpostings t
 
 -- | Generate javascript/html for a register balance line chart based on
 -- the provided "TransactionsReportItem"s.
-registerChartHtml items = [$hamlet|
+registerChartHtml items =
+ -- have to make sure plot is not called when our container (maincontent)
+ -- is hidden, eg with add form toggled
+ [$hamlet|
 <script type=text/javascript>
+ if (document.getElementById('maincontent').style.display == 'block')
   \$(document).ready(function() {
     /* render chart */
-    /* if (\$('#register-chart')) */
       \$.plot($('#register-chart'),
              [
               [