Move AtomWindow to it's own file

src/atom-window.coffee

@@ -0,0 +1,32 @@
+BrowserWindow = require 'browser_window'
+ipc = require 'ipc'
+
+module.exports =
+class AtomWindow
+  browserWindow: null
+
+  constructor: ({bootstrapScript, resourcePath, pathToOpen, exitWhenDone, @isSpec}) ->
+    @browserWindow = new BrowserWindow show: false, title: 'Atom'
+    @handleEvents()
+
+    url = "file://#{resourcePath}/static/index.html?bootstrapScript=#{bootstrapScript}&resourcePath=#{resourcePath}"
+    url += "&pathToOpen=#{pathToOpen}" if pathToOpen
+    url += '&exitWhenDone=1' if exitWhenDone
+
+    @browserWindow.loadUrl url
+
+  handleEvents: ->
+    @browserWindow.on 'destroyed', =>
+      require('atom-application').removeWindow(this)
+
+    if @isSpec
+      # Spec window's web view should always have focus
+      @browserWindow.on 'blur', =>
+        @browserWindow.focusOnWebView()
+    else
+      @browserWindow.on 'close', (event) =>
+        event.preventDefault()
+        @sendCommand 'window:close'
+
+  sendCommand: (command) ->
+    ipc.sendChannel @browserWindow.getProcessId(), @browserWindow.getRoutingId(), 'command', command