From 96874d68d8f5fe58ea2df605ef9372be09dd5fcf Mon Sep 17 00:00:00 2001
From: Jessica Lord <jlord@github.com>
Date: Tue, 21 Jul 2015 11:10:35 -0700
Subject: [PATCH] Run polling functions when windows resizes

---
 spec/view-registry-spec.coffee | 12 +++++++++++-
 src/view-registry.coffee       |  2 ++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/spec/view-registry-spec.coffee b/spec/view-registry-spec.coffee
index e5153647d..10ad0f7eb 100644
--- a/spec/view-registry-spec.coffee
+++ b/spec/view-registry-spec.coffee
@@ -186,7 +186,9 @@ describe "ViewRegistry", ->
       expect(events).toEqual ['write', 'read', 'poll']
 
   describe "::pollDocument(fn)", ->
-    it "calls all registered polling functions after document or stylesheet changes until they are disabled via a returned disposable", ->
+    [testElement, testStyleSheet, disposable1, disposable2, events] = []
+
+    beforeEach ->
       testElement = document.createElement('div')
       testStyleSheet = document.createElement('style')
       testStyleSheet.textContent = 'body {}'
@@ -198,6 +200,7 @@ describe "ViewRegistry", ->
       disposable1 = registry.pollDocument -> events.push('poll 1')
       disposable2 = registry.pollDocument -> events.push('poll 2')
 
+    it "calls all registered polling functions after document or stylesheet changes until they are disabled via a returned disposable", ->
       expect(events).toEqual []
 
       testElement.style.height = '400px'
@@ -223,3 +226,10 @@ describe "ViewRegistry", ->
 
       runs ->
         expect(events).toEqual ['poll 2']
+
+    it "calls all registered polling functions when the window resizes", ->
+      expect(events).toEqual []
+
+      window.dispatchEvent(new UIEvent('resize'))
+
+      expect(events).toEqual ['poll 1', 'poll 2']
diff --git a/src/view-registry.coffee b/src/view-registry.coffee
index 285c715dd..4c98bb153 100644
--- a/src/view-registry.coffee
+++ b/src/view-registry.coffee
@@ -210,9 +210,11 @@ class ViewRegistry
     writer() while writer = @documentWriters.shift()
 
   startPollingDocument: ->
+    window.addEventListener('resize', @performDocumentPoll)
     @observer.observe(document, {subtree: true, childList: true, attributes: true})
 
   stopPollingDocument: ->
+    window.removeEventListener('resize', @performDocumentPoll)
     @observer.disconnect()
 
   performDocumentPoll: =>