Add API for enabling/disabling input to support vim-mode's insert mode

spec/editor-component-spec.coffee

@@ -1175,6 +1175,12 @@ describe "EditorComponent", ->
       inputNode.dispatchEvent(new Event('input'))
       expect(editor.lineForBufferRow(0)).toBe 'üvar quicksort = function () {'
 
+    it "does not handle input events when input is disabled", ->
+      component.setInputEnabled(false)
+      inputNode.value = 'x'
+      inputNode.dispatchEvent(new Event('input'))
+      expect(editor.lineForBufferRow(0)).toBe 'var quicksort = function () {'
+
   describe "commands", ->
     describe "editor:consolidate-selections", ->
       it "consolidates selections on the editor model, aborting the key binding if there is only one selection", ->

src/editor-component.coffee

@@ -37,6 +37,7 @@ EditorComponent = React.createClass
   overflowChangedEventsPaused: false
   overflowChangedWhilePaused: false
   measureLineHeightAndDefaultCharWidthWhenShown: false
+  inputEnabled: true
 
   render: ->
     {focused, fontSize, lineHeight, fontFamily, showIndentGuide, showInvisibles, visible} = @state
@@ -456,6 +457,8 @@ EditorComponent = React.createClass
     scrollViewNode.scrollLeft = 0
 
   onInput: (char, replaceLastCharacter) ->
+    return unless @inputEnabled
+
     {editor} = @props
 
     if replaceLastCharacter
@@ -760,6 +763,10 @@ EditorComponent = React.createClass
   getModel: ->
     @props.editor
 
+  isInputEnabled: -> @inputEnabled
+
+  setInputEnabled: (@inputEnabled) -> @inputEnabled
+
   runScrollBenchmark: ->
     unless process.env.NODE_ENV is 'production'
       ReactPerf = require 'react-atom-fork/lib/ReactDefaultPerf'

src/react-editor-view.coffee

@@ -197,6 +197,12 @@ class ReactEditorView extends View
   insertText: (text) ->
     @editor.insertText(text)
 
+  isInputEnabled: ->
+    @component.isInputEnabled()
+
+  setInputEnabled: (inputEnabled) ->
+    @component.setInputEnabled(inputEnabled)
+
   requestDisplayUpdate: -> # No-op shim for find-and-replace
 
   updateDisplay: -> # No-op shim for package specs