I'm an idiot

extensions/tabs/tabs-pane.coffee

@@ -0,0 +1,57 @@
+$ = require 'jquery'
+_ = require 'underscore'
+
+Pane = require 'pane'
+
+module.exports =
+class TabsPane extends Pane
+  position: 'top'
+
+  html: $ require 'tabs/tabs.html'
+
+  constructor: ->
+    # Style html
+    @html.parents('.pane').css height: 'inherit'
+    css = $('<style id="tabs-style"></style>').html require 'tabs/tabs.css'
+    $('head').append css
+
+    # click tab
+    tabPane = this
+    $('#tabs ul li').live 'mousedown', ->
+      tabPane.switchToTab this
+      false
+
+  nextTab: ->
+    @switchToTab $('#tabs ul .active').next()
+
+  prevTab: ->
+    @switchToTab $('#tabs ul .active').prev()
+
+  switchToTab: (tab) ->
+    tab = $("#tabs ul li").get(tab - 1) if _.isNumber tab
+    return if tab.length is 0
+
+    $("#tabs ul .active").removeClass("active")
+    $(tab).addClass 'active'
+    window.editor.focusBuffer $(tab).data 'path'
+
+  addTab: (path) ->
+    existing = $("#tabs [data-path='#{path}']")
+    if existing.length
+      return @switchToTab existing
+
+    name = if path then _.last path.split '/' else "untitled"
+    $("#tabs ul .active").removeClass()
+    $("#tabs ul").append """
+      <li data-path='#{path}'><a href='#'>#{name}</a></li>
+    """
+    $("#tabs ul li:last").addClass 'active'
+
+  removeTab: (path) ->
+    tab = $("#tabs li[data-path='#{path}']")
+    if tab.hasClass("active")
+      nextTab = tab.next()
+      nextTab = tab.prev() if nextTab.length == 0
+      @switchToTab nextTab if nextTab.length != 0
+
+    tab.remove()

extensions/tree/tree-pane.coffee

@@ -26,17 +26,15 @@ class TreePane extends Pane
 
       if fs.isDirectory path
         window.x = @tree
-        openedDirs = @tree.getOpenedDirs()
         if el.hasClass 'open'
-          openedDirs = _.without openedDirs, path
+          @tree.hideDir path
           el.removeClass 'open'
           el.children("ul").remove()
         else
-          openedDirs.push path unless path in openedDirs
+          @tree.showDir path
           el.addClass 'open'
           list = @createList path
           el.append list
-        @tree.setOpenedDirs openedDirs
       else
         el.addClass 'active'
         window.open path
@@ -58,14 +56,14 @@ class TreePane extends Pane
     paths = fs.list root
 
     list = $('<ul>')
+    console.log @tree.shownDirs()
     for path in paths
       filename = path.replace(root, "").substring 1
       type = if fs.isDirectory path then 'dir' else 'file'
       encodedPath = encodeURIComponent path
       listItem = $("<li class='#{type}' data-path='#{encodedPath}'>#{filename}</li>")
-      openedDirs = @tree.getOpenedDirs()
 
-      if path in openedDirs and fs.isDirectory path
+      if path in @tree.shownDirs() and fs.isDirectory path
         listItem.append @createList path
         listItem.addClass "open"
       list.append listItem

extensions/tree/tree.coffee

@@ -15,21 +15,23 @@ class Tree extends Extension
     KeyBinder.load require.resolve "tree/key-bindings.coffee"
 
     # Remove dirs that no longer exist
-    openedPaths = @getOpenedDirs()
-    for dir in openedPaths when not fs.exists dir
-      openedDirs = _.without openedDirs, path
-      @setOpenedDirs openedDirs
+    @hideDir(dir) for dir in @shownDirs() when not fs.exists dir
 
     @pane = new TreePane @
 
-  storageNamespace: ->
-    @.constructor.name + ":" + atomController.path
-
-  getOpenedDirs: ->
-    Storage.get @storageNamespace() + ':openedDirs', []
-
-  setOpenedDirs: (value) ->
-    Storage.set @storageNamespace() + ':openedDirs', value
-
   startup: ->
     @pane.show()
+
+  shownDirStorageKey: ->
+    @.constructor.name + ":" + atomController.path + ":shownDirs"
+
+  shownDirs: ->
+    Storage.get @shownDirStorageKey(), []
+
+  showDir: (dir) ->
+    dirs = @shownDirs().concat dir
+    Storage.set @shownDirStorageKey(), dirs
+
+  hideDir: (dir) ->
+    dirs = _.without @shownDirs(), dir
+    Storage.set @shownDirStorageKey(), dirs