From fa66048d71d4edcc6f066075f2ee649a220e2e7b Mon Sep 17 00:00:00 2001
From: Nathan Sobo <nathan@github.com>
Date: Thu, 12 Nov 2015 17:34:48 -0700
Subject: [PATCH] Guard against focusing a destroyed pane

---
 spec/pane-spec.coffee | 6 ++++++
 src/pane.coffee       | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/spec/pane-spec.coffee b/spec/pane-spec.coffee
index 36803bde6..325087263 100644
--- a/spec/pane-spec.coffee
+++ b/spec/pane-spec.coffee
@@ -751,6 +751,12 @@ describe "Pane", ->
         pane2.destroy()
         expect(container.root).toBe pane1
 
+  describe "::focus()", ->
+    it "doesn't blow up if the pane has been destroyed", ->
+      pane = new Pane(paneParams())
+      pane.destroy()
+      pane.focus()
+
   describe "serialization", ->
     pane = null
 
diff --git a/src/pane.coffee b/src/pane.coffee
index 412fc5251..06ffd8f49 100644
--- a/src/pane.coffee
+++ b/src/pane.coffee
@@ -248,7 +248,7 @@ class Pane extends Model
   # Called by the view layer to indicate that the pane has gained focus.
   focus: ->
     @focused = true
-    @activate() unless @isActive()
+    @activate() unless @isActive() or @isDestroyed()
 
   # Called by the view layer to indicate that the pane has lost focus.
   blur: ->