Meta+s triggers save on Editor.

Still can't save buffers that don't have a url.

spec/atom/app-spec.coffee

@@ -20,7 +20,5 @@ describe "App", ->
       expect(app.windows().length).toBe 1
       newWindow = app.windows()[0]
 
-      expect(newWindow.editor).toBeDefined()
-      expect(newWindow.editor.buffer).toBeDefined()
       expect(newWindow.editor.buffer.url).toEqual filePath
       expect(newWindow.editor.buffer.getText()).toEqual fs.read(filePath)

spec/atom/editor-spec.coffee

@@ -1,17 +1,21 @@
 Editor = require 'editor'
 $ = require 'jquery'
 ck = require 'coffeekup'
+fs = require 'fs'
 
 describe "Editor", ->
-  mainDiv = null; editor = null; filePath = null
+  mainDiv = null; editor = null
+  filePath = null; tempFilePath = null
 
   beforeEach ->
     filePath = require.resolve 'fixtures/sample.txt'
+    tempFilePath = '/tmp/temp.txt'
     mainDiv = $("<div id='main'>")
     $("#jasmine-content").append(mainDiv)
     editor = new Editor filePath
 
   afterEach ->
+    fs.remove tempFilePath
     editor.destroy()
 
   describe "constructor", ->
@@ -35,3 +39,32 @@ describe "Editor", ->
       expect(editor.buffer.getText()).not.toMatch /^.ooo/
       editor.aceEditor.getSession().insert {row: 0, column: 1}, 'ooo'
       expect(editor.buffer.getText()).toMatch /^.ooo/
+
+
+  describe "on key down", ->
+    describe "meta+s", ->
+      tempEditor = null
+
+      beforeEach ->
+        tempEditor = new Editor tempFilePath
+
+      afterEach ->
+        tempEditor.destroy()
+
+      describe "when the current buffer has a url", ->
+        it "saves the current buffer to disk", ->
+          tempEditor.buffer.setText 'Edited buffer!'
+          expect(fs.exists(tempFilePath)).toBeFalsy()
+
+          $(document).trigger(keydown 'meta+s')
+
+          expect(fs.exists(tempFilePath)).toBeTruthy()
+          expect(fs.read(tempFilePath)).toBe 'Edited buffer!'
+
+      describe "when the current buffer has no url", ->
+        it "presents a save as dialog", ->
+
+        describe "when a url is chosen", ->
+
+        describe "when dialog is cancelled", ->
+

spec/spec-helper.coffee

@@ -0,0 +1,13 @@
+$ = require 'jquery'
+_ = require 'underscore'
+
+window.app = new (require 'app')
+
+window.keydown = (pattern) ->
+  keys = pattern.split '+'
+  $.Event "keydown",
+    ctrlKey: 'ctrl' in keys
+    altKey: 'alt' in keys
+    shiftKey: 'shift' in keys
+    metaKey: 'meta' in keys
+    which: _.last(keys).toUpperCase().charCodeAt 0

spec/spec-suite.coffee

@@ -1,5 +1,4 @@
 fs = require 'fs'
 
-window.app = new (require 'app')
-
+require 'spec-helper'
 require path for path in fs.listDirectoryTree(require.resolve '.') when /-spec\.coffee$/.test path

src/atom/editor.coffee

@@ -7,21 +7,30 @@ module.exports =
 class Editor
   aceEditor: null
   buffer: null
+  editorElement: null
 
   constructor: (url) ->
     @buffer = new Buffer(url)
     @buildAceEditor()
+    $(document).keydown (event) =>
+      if String.fromCharCode(event.which) == 'S' and event.metaKey
+        @save()
+
 
   destroy: ->
     @aceEditor.destroy()
 
   buildAceEditor: ->
-    editorElement = $("<div class='editor'>")
-    $('#main').append(editorElement)
-    @aceEditor = ace.edit editorElement[0]
+    @editorElement = $("<div class='editor'>")
+    $('#main').append(@editorElement)
+    @aceEditor = ace.edit @editorElement[0]
     @aceEditor.setSession(new EditSession(@buffer.aceDocument))
     @aceEditor.setTheme(require "ace/theme/twilight")
 
   getAceSession: ->
     @aceEditor.getSession()
 
+
+  save: ->
+    @buffer.save()
+

src/atom/window.coffee

@@ -24,9 +24,6 @@ windowAdditions =
   onerror: ->
     @showConsole true
 
-  handleKeyEvent: ->
-    null
-
   triggerEvent: ->
     null