diff --git a/src/atom/browser.coffee b/src/atom/browser.coffee
index 40d46d3a8..01e4653b2 100644
--- a/src/atom/browser.coffee
+++ b/src/atom/browser.coffee
@@ -4,6 +4,8 @@ Document = require 'document'
 
 module.exports =
 class Browser extends Document
+  @register (path) -> /^https?:/.test path
+
   buffers: {}
 
   html: $ "<div id='browser'></div>"
diff --git a/src/atom/document.coffee b/src/atom/document.coffee
index edba498fc..b71d806dc 100644
--- a/src/atom/document.coffee
+++ b/src/atom/document.coffee
@@ -1,9 +1,17 @@
+_ = require 'underscore'
 Pane = require 'pane'
 
 module.exports =
 class Document extends Pane
   position: "main"
 
+  @handlers: {}
+  @handler: (path) ->
+    for handler, test of Document.handlers
+      return handler if test path
+  @register: (cb) ->
+    Document.handlers[this] = cb
+
   open: ->
   close: ->
   save: ->
diff --git a/src/atom/editor.coffee b/src/atom/editor.coffee
index f81f66a83..995f130e5 100644
--- a/src/atom/editor.coffee
+++ b/src/atom/editor.coffee
@@ -9,6 +9,8 @@ ace = require 'ace/ace'
 
 module.exports =
 class Editor extends Document
+  @register (path) -> fs.isFile path
+
   activePath: null
 
   buffers: {}