Set is-focused class on React editor's wrapper view for now

spec/editor-component-spec.coffee

@@ -918,8 +918,10 @@ describe "EditorComponent", ->
       expect(document.activeElement).toBe document.body
       inputNode.focus()
       expect(node.classList.contains('is-focused')).toBe true
+      expect(wrapperView.hasClass('is-focused')).toBe true
       inputNode.blur()
       expect(node.classList.contains('is-focused')).toBe false
+      expect(wrapperView.hasClass('is-focused')).toBe false
 
   describe "selection handling", ->
     cursor = null

src/editor-component.coffee

@@ -170,6 +170,7 @@ EditorComponent = React.createClass
   componentDidUpdate: (prevProps, prevState) ->
     @pendingChanges.length = 0
     @refreshingScrollbars = false
+    @updateParentViewFocusedClassIfNeeded(prevState)
     @measureScrollbars() if @measuringScrollbars
     @measureLineHeightAndCharWidthsIfNeeded(prevState)
     @pauseOverflowChangedEvents()
@@ -784,3 +785,7 @@ EditorComponent = React.createClass
     top = clientY - scrollViewClientRect.top + editor.getScrollTop()
     left = clientX - scrollViewClientRect.left + editor.getScrollLeft()
     {top, left}
+
+  updateParentViewFocusedClassIfNeeded: (prevState) ->
+    if prevState.focused isnt @state.focused
+      @props.parentView.toggleClass('is-focused', @props.focused)