From 07d827c907fa73f1b27788e86504b3936fd60045 Mon Sep 17 00:00:00 2001
From: scrawl <scrawl@baseoftrash.de>
Date: Mon, 8 Sep 2014 15:22:33 +0200
Subject: [PATCH] Ignore invalid input in numeric EditBox (Fixes #1885)

---
 apps/openmw/mwgui/tradewindow.cpp | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/apps/openmw/mwgui/tradewindow.cpp b/apps/openmw/mwgui/tradewindow.cpp
index ccfe6b1eb..8126a4ee8 100644
--- a/apps/openmw/mwgui/tradewindow.cpp
+++ b/apps/openmw/mwgui/tradewindow.cpp
@@ -436,6 +436,10 @@ namespace MWGui
         }
         catch (std::bad_cast&)
         {
+            if (_sender->getCaption().empty())
+                mTotalBalance->setCaption("0");
+            else
+                mTotalBalance->setCaption(boost::lexical_cast<std::string>(std::abs(mCurrentBalance)));
         }
     }
 
@@ -460,16 +464,19 @@ namespace MWGui
 
         mPlayerGold->setCaptionWithReplacing("#{sYourGold} " + boost::lexical_cast<std::string>(playerGold));
 
+        std::string balanceCaption;
         if (mCurrentBalance > 0)
         {
             mTotalBalanceLabel->setCaptionWithReplacing("#{sTotalSold}");
-            mTotalBalance->setCaption(boost::lexical_cast<std::string>(mCurrentBalance));
+            balanceCaption = boost::lexical_cast<std::string>(mCurrentBalance);
         }
         else
         {
             mTotalBalanceLabel->setCaptionWithReplacing("#{sTotalCost}");
-            mTotalBalance->setCaption(boost::lexical_cast<std::string>(-mCurrentBalance));
+            balanceCaption = boost::lexical_cast<std::string>(-mCurrentBalance);
         }
+        if (balanceCaption != mTotalBalance->getCaption().asUTF8()) // Don't reset text cursor if text doesn't need to be changed
+            mTotalBalance->setCaption(balanceCaption);
 
         mMerchantGold->setCaptionWithReplacing("#{sSellerGold} " + boost::lexical_cast<std::string>(getMerchantGold()));
     }