'meta-o' presents open dialog.

spec/atom/window-spec.coffee

@@ -13,3 +13,28 @@ describe "Window", ->
         spyOn(window.editor, 'save')
         window.keydown 'meta+s'
         expect(window.editor.save).toHaveBeenCalled()
+
+    describe 'meta+o', ->
+      selectedFilePath = null
+
+      beforeEach ->
+        spyOn(atom.native, 'openPanel').andCallFake -> 
+          selectedFilePath
+
+      it 'presents an open dialog', ->
+        window.keydown 'meta+o'
+        expect(atom.native.openPanel).toHaveBeenCalled()
+
+      describe 'when a url is chosen', ->
+        it 'opens the url in the editor', ->
+          selectedFilePath = require.resolve 'fixtures/sample.txt'
+          spyOn(window.editor, 'open').andCallFake (url) -> url
+          window.keydown 'meta+o'
+          expect(window.editor.open).toHaveBeenCalledWith(selectedFilePath)
+
+      describe 'when dialog is canceled', ->
+        it 'does not open the editor', ->
+          selectedFilePath = null
+          spyOn(window.editor, 'open').andCallFake()
+          window.keydown 'meta+o'
+          expect(window.editor.open).not.toHaveBeenCalled()

src/atom/window.coffee

@@ -27,6 +27,10 @@ windowAdditions =
       if String.fromCharCode(event.which) == 'S' and event.metaKey
         @editor.save()
 
+      if String.fromCharCode(event.which) == 'O' and event.metaKey
+        url = atom.native.openPanel()
+        @editor.open(url) if url
+
   unbindKeys: ->
     $(document).unbind 'keydown'
 

src/stdlib/native.coffee

@@ -26,11 +26,7 @@ class Native
       return null
     filename = panel.filenames.lastObject
     localStorage.lastOpenedPath = filename
-    filename.toString()
-
-  openURL: (url) ->
-    window.location = url
-    atom.app.activeWindow.setTitle _.last url.replace(/\/$/,'').split '/'
+    filename.valueOf()
 
   # Returns null or a file path.
   savePanel: ->

static/atom.css

@@ -60,5 +60,6 @@ body {
 .ace_editor {
   position: relative !important;
   font: 18px Inconsolata, Monaco, Courier !important;
-  -webkit-box-flex: 1;
+  width: 100%;
+  height: 100%;
 }