From 17c785e1f8aee169fe6c3fe9eb7dbbcc9843999e Mon Sep 17 00:00:00 2001
From: Oliver <480930+rivo@users.noreply.github.com>
Date: Thu, 11 Jan 2018 11:52:27 +0100
Subject: [PATCH] Application does not lock on PollEvent() call anymore. Should
 resolve gridlocks when calling SetRoot() in goroutines. Resolves #6

---
 application.go | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/application.go b/application.go
index cdf01bf..3b66e00 100644
--- a/application.go
+++ b/application.go
@@ -112,15 +112,18 @@ func (a *Application) Run() error {
 	// Start event loop.
 	for {
 		a.RLock()
-		if a.screen == nil {
-			a.RUnlock()
+		screen := a.screen
+		a.RUnlock()
+		if screen == nil {
 			break
 		}
+
+		// Wait for next event.
 		event := a.screen.PollEvent()
-		a.RUnlock()
 		if event == nil {
 			break // The screen was finalized.
 		}
+
 		switch event := event.(type) {
 		case *tcell.EventKey:
 			a.RLock()