From b7b4dcda24536421e9cfd4a738d4b477ee33c3a2 Mon Sep 17 00:00:00 2001
From: Kevin Sawicki <kevin@github.com>
Date: Mon, 8 Apr 2013 12:50:05 -0700
Subject: [PATCH] Schedule redraw when updating an invisible editor

The redrawOnReattach flag will now be set when update
display is called on an invisible editor so that if the
editor is detached or hidden before the next update was
processed it will be performed when reattached.
---
 spec/app/editor-spec.coffee | 18 ++++++++++++++++++
 src/app/editor.coffee       |  4 +++-
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/spec/app/editor-spec.coffee b/spec/app/editor-spec.coffee
index a49088bfd..9fe7e94e0 100644
--- a/spec/app/editor-spec.coffee
+++ b/spec/app/editor-spec.coffee
@@ -2515,3 +2515,21 @@ describe "Editor", ->
 
         runs ->
           expect(editor.renderedLines.find('.line').text()).toBe 'hidden changes'
+
+      it "redraws the editor when it is next reattached", ->
+        editor.attachToDom()
+        editor.hide()
+        editor.setText('hidden changes')
+        editor.setCursorBufferPosition([0,4])
+        editor.detach()
+
+        displayUpdatedHandler = jasmine.createSpy("displayUpdatedHandler")
+        editor.on 'editor:display-updated', displayUpdatedHandler
+        editor.show()
+        editor.attachToDom()
+
+        waitsFor ->
+          displayUpdatedHandler.callCount is 1
+
+        runs ->
+          expect(editor.renderedLines.find('.line').text()).toBe 'hidden changes'
diff --git a/src/app/editor.coffee b/src/app/editor.coffee
index 37e9610af..5eefef7bb 100644
--- a/src/app/editor.coffee
+++ b/src/app/editor.coffee
@@ -783,7 +783,9 @@ class Editor extends View
   updateDisplay: (options={}) ->
     return unless @attached and @activeEditSession
     return if @activeEditSession.destroyed
-    return unless @isVisible()
+    unless @isVisible()
+      @redrawOnReattach = true
+      return
 
     @updateRenderedLines()
     @highlightCursorLine()