Vim mode supports command mode and insert mode with i, esc, and x bindings

src/atom/editor.coffee

@@ -55,3 +55,14 @@ class Editor extends Template
         @buffer.url = url
         @buffer.save()
 
+    setCursor: ({column, row}) ->
+      @aceEditor.moveCursorToPosition({column, row})
+
+    getCursor: ->
+      @getAceSession().getSelection().getCursor()
+
+    delete: ->
+      @aceEditor.remove 'right'
+
+
+

src/atom/root-view.coffee

@@ -8,6 +8,7 @@ Editor = require 'editor'
 FileFinder = require 'file-finder'
 Project = require 'project'
 GlobalKeymap = require 'global-keymap'
+VimMode = require 'vim-mode'
 
 module.exports =
 class RootView extends Template
@@ -22,6 +23,7 @@ class RootView extends Template
     globalKeymap: null
 
     initialize: ({url}) ->
+      new VimMode(@editor)
       @editor.keyEventHandler = atom.globalKeymap
       @createProject(url)
 

src/atom/vim-mode.coffee

@@ -0,0 +1,28 @@
+module.exports =
+class VimMode
+  editor: null
+
+  constructor: (@editor) ->
+    atom.bindKeys '.command-mode'
+      'i': 'insert-mode:activate'
+      'x': 'command-mode:delete'
+
+    atom.bindKeys '.insert-mode'
+      '<esc>': 'command-mode:activate'
+
+    @editor.addClass('command-mode')
+
+    @editor.on 'insert-mode:activate', => @activateInsertMode()
+    @editor.on 'command-mode:activate', => @activateCommandMode()
+    @editor.on 'command-mode:delete', => @delete()
+
+  activateInsertMode: ->
+    @editor.removeClass('command-mode')
+    @editor.addClass('insert-mode')
+
+  activateCommandMode: ->
+    @editor.removeClass('insert-mode')
+    @editor.addClass('command-mode')
+
+  delete: ->
+    @editor.delete()