From 9cb38baaf88b9f50eeed028ab66421c462f3124a Mon Sep 17 00:00:00 2001
From: Richard Moe Gustavsen <richard.gustavsen@theqtcompany.com>
Date: Mon, 30 Mar 2015 15:11:37 +0200
Subject: [PATCH] iOS: check if Qt has an active window before scrolling to
 cursor
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In hybrid applications an external view can be first reponder. And when
that is the case, Qt will have no active windows and focusView will return 0.
We therefore need to protect scrollToCursor from this case, so it doesn't try
to access e.g focusView().window, which will lead to a crash.

Task-number: QTBUG-45182
Change-Id: I87d470631f5beda22fd64fc1f2b0f7259344f830
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@theqtcompany.com>
---
 src/plugins/platforms/ios/qiosinputcontext.mm | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/plugins/platforms/ios/qiosinputcontext.mm b/src/plugins/platforms/ios/qiosinputcontext.mm
index 2ebd87f29c8..090df66e0d3 100644
--- a/src/plugins/platforms/ios/qiosinputcontext.mm
+++ b/src/plugins/platforms/ios/qiosinputcontext.mm
@@ -437,6 +437,9 @@ void QIOSInputContext::scrollToCursor()
     if (!rootView)
         return;
 
+    if (!focusView())
+        return;
+
     if (rootView.window != focusView().window)
         return;