Use atom.views.getView in WorkspaceView to preserve previous behavior

The status-bar package specs were calling atom.views.getView with the
workspace model *prior* to instantiating the SpacePen view. A weird
case, but might as well leave it working so the deprecation shim is
perfect.

benchmark/benchmark-helper.coffee

@@ -1,7 +1,8 @@
 require '../spec/spec-helper'
 
 path = require 'path'
-{$, Point} = require 'atom'
+{$} = require '../src/space-pen-extensions'
+{Point} = require 'atom'
 _ = require 'underscore-plus'
 fs = require 'fs-plus'
 Project = require '../src/project'

benchmark/benchmark-suite.coffee

@@ -1,5 +1,7 @@
 require './benchmark-helper'
-{$, _, WorkspaceView} = require 'atom'
+{$} = require '../src/space-pen-extensions'
+_ = require 'underscore-plus'
+{WorkspaceView} = require 'atom'
 TokenizedBuffer = require '../src/tokenized-buffer'
 
 describe "editorView.", ->
@@ -7,7 +9,7 @@ describe "editorView.", ->
 
   beforeEach ->
     atom.workspaceViewParentSelector = '#jasmine-content'
-    atom.workspaceView = atom.views.getView(atom.workspace).__spacePenView
+    atom.workspaceView = atom.views.createView(atom.workspace).__spacePenView
     atom.workspaceView.attachToDom()
 
     atom.workspaceView.width(1024)

build/tasks/docs-task.coffee

@@ -6,12 +6,17 @@ _ = require 'underscore-plus'
 donna = require 'donna'
 tello = require 'tello'
 
+moduleBlacklist = [
+  'space-pen'
+]
+
 module.exports = (grunt) ->
   getClassesToInclude = ->
     modulesPath = path.resolve(__dirname, '..', '..', 'node_modules')
     classes = {}
     fs.traverseTreeSync modulesPath, (modulePath) ->
       return false if modulePath.match(/node_modules/g).length > 1 # dont need the dependencies of the dependencies
+      return false if path.basename(modulePath) in moduleBlacklist
       return true unless path.basename(modulePath) is 'package.json'
       return true unless fs.isFileSync(modulePath)
 

docs/advanced/configuration.md

@@ -11,32 +11,34 @@ value of a namespaced config key with `atom.config.get`:
 @showInvisibles() if atom.config.get "editor.showInvisibles"
 ```
 
-Or you can use the `::subscribe` with `atom.config.observe` to track changes
-from any view object.
+Or you can subscribe via `atom.config.observe` to track changes from any view
+object.
 
 ```coffeescript
+{View} = require 'space-pen'
+
 class MyView extends View
-  initialize: ->
-    @subscribe atom.config.observe 'editor.fontSize', (newValue, {previous}) =>
-      @adjustFontSize()
+  attached: ->
+    @fontSizeObserveSubscription =
+      atom.config.observe 'editor.fontSize', (newValue, {previous}) =>
+        @adjustFontSize()
+
+  detached: ->
+    @fontSizeObserveSubscription.dispose()
 ```
 
 The `atom.config.observe` method will call the given callback immediately with
 the current value for the specified key path, and it will also call it in the
-future whenever the value of that key path changes.
+future whenever the value of that key path changes. If you only want to invoke
+the callback when the next time the value changes, use `atom.config.onDidChange`
+instead.
 
-Subscriptions made with `::subscribe` are automatically canceled when the
-view is removed. You can cancel config subscriptions manually via the
-`off` method on the subscription object that `atom.config.observe` returns.
-
-```coffeescript
-fontSizeSubscription = atom.config.observe 'editor.fontSize', (newValue, {previous}) =>
-  @adjustFontSize()
-
-# ... later on
-
-fontSizeSubscription.off() # Stop observing
-```
+Subscription methods return *disposable* subscription objects. Note in the
+example above how we save the subscription to the `@fontSizeObserveSubscription`
+instance variable and dispose of it when the view is detached. To group multiple
+subscriptions together, you can add them all to a
+[`CompositeDisposable`][composite-disposable] that you dispose when the view is
+detached.
 
 ### Writing Config Settings
 
@@ -48,10 +50,9 @@ but you can programmatically write to it with `atom.config.set`:
 atom.config.set("core.showInvisibles", true)
 ```
 
-You can also use `setDefaults`, which will assign default values for keys that
-are always overridden by values assigned with `set`. Defaults are not written
-out to the the `config.json` file to prevent it from becoming cluttered.
+If you're exposing package configuration via specific key paths, you'll want to
+associate them with a schema in your package's main module. Read more about
+schemas in the [config API docs][config-api].
 
-```coffeescript
-atom.config.setDefaults("editor", fontSize: 18, showInvisibles: true)
-```
+[composite-disposable]: https://atom.io/docs/api/latest/CompositeDisposable
+[config-api]: https://atom.io/docs/api/latest/Config

docs/advanced/globals.md

@@ -1,34 +0,0 @@
-# Globals
-
-Atom exposes several services through singleton objects accessible via the
-`atom` global:
-
-* atom
-  * workspace:
-      Manipulate and query the state of the user interface for the current
-      window. Open editors, manipulate panes.
-  * workspaceView:
-      Similar to workspace, but provides access to the root of all views in the
-      current window.
-  * project:
-      Access the directory associated with the current window. Load editors,
-      perform project-wide searches, register custom openers for special file
-      types.
-  * config:
-      Read, write, and observe user configuration settings.
-  * keymap:
-      Add and query the currently active keybindings.
-  * deserializers:
-      Deserialize instances from their state objects and register deserializers.
-  * packages:
-      Activate, deactivate, and query user packages.
-  * themes:
-      Activate, deactivate, and query user themes.
-  * contextMenu:
-      Register context menus.
-  * menu:
-      Register application menus.
-  * pasteboard:
-      Read from and write to the system pasteboard.
-  * syntax:
-      Assign and query syntactically-scoped properties.

docs/advanced/view-system.md

@@ -1,58 +0,0 @@
-## Atom's View System
-
-### SpacePen Basics
-
-Atom's view system is built around the [SpacePen] view framework. SpacePen
-view objects inherit from the jQuery prototype, and wrap DOM nodes
-
-View objects are actually jQuery wrappers around DOM fragments, supporting all
-the typical jQuery traversal and manipulation methods. In addition, view objects
-have methods that are view-specific. For example, you could call both general
-and view-specific on the global `atom.workspaceView` instance:
-
-```coffeescript
-atom.workspaceView.find('atom-text-editor.active') # standard jQuery method
-atom.workspaceView.getActiveEditor()      # view-specific method
-```
-
-If you retrieve a jQuery wrapper for an element associated with a view, use the
-`.view()` method to retrieve the element's view object:
-
-```coffeescript
-# this is a plain jQuery object; you can't call view-specific methods
-editorElement = atom.workspaceView.find('atom-text-editor.active')
-
-# get the view object by calling `.view()` to call view-specific methods
-editorView = editorElement.view()
-editorView.setCursorBufferPosition([1, 2])
-```
-
-Refer to the [SpacePen] documentation for more details.
-
-### WorkspaceView
-
-The root of Atom's view hierarchy is a global called `atom.workspaceView`, which is a
-singleton instance of the `WorkspaceView` view class. The root view fills the entire
-window, and contains every other view. If you open Atom's inspector with
-`alt-cmd-i`, you can see the internal structure of `WorkspaceView`:
-
-![WorkspaceView in the inspector][workspaceview-inspector]
-
-#### Panes
-
-The `WorkspaceView` contains `prependToBottom/Top/Left/Right` and
-`appendToBottom/Top/Left/Right` methods, which are used to add Tool Panels. Tool
-panels are elements that take up screen real estate not devoted to text editing.
-In the example above, the `TreeView` is appended to the left, and the
-`CommandPanel` is appended to the top.
-
-```coffeescript
-# place a view to the left of the panes
-atom.workspaceView.appendToLeft(new MyView)
-
-# place a view below the panes
-atom.workspaceView.appendToBottom(new MyOtherView)
-```
-
-[spacepen]: http://github.com/nathansobo/space-pen
-[workspaceView-inspector]: https://f.cloud.github.com/assets/1424/1091631/1932c2d6-166b-11e3-8adf-9690fe82d3b8.png

docs/apm-rest-api.md

@@ -30,6 +30,8 @@ All requests that take parameters require `application/json`.
 Parameters:
 
 - **page** (optional)
+- **sort** (optional, values: `created_at`, `updated_at`, `downloads`)
+- **direction** (optional, values: `asc`, `desc`)
 
 Returns a list of all packages in the following format:
 ```json
@@ -57,6 +59,20 @@ Link: <https://www.atom.io/api/packages?page=1>; rel="self",
       <https://www.atom.io/api/packages?page=2>; rel="next"
 ```
 
+By default, results are sorted by download count, descending.
+
+#### GET /api/packages/search
+
+Parameters:
+
+- **q** String query to search
+- **sort** (optional, values: `created_at`, `updated_at`, `downloads`)
+- **direction** (optional, values: `asc`, `desc`)
+
+Returns a list of all packages in the same format as `/api/packages`.
+
+By default, results sorted by relevance to search query.
+
 ### Showing package details
 
 #### GET /api/packages/:package_name

docs/creating-a-package.md

@@ -40,7 +40,7 @@ package.json files have their own additions.
 - `main` (**Required**): the path to the CoffeeScript file that's the entry point
 to your package
 - `stylesheets` (**Optional**): an Array of Strings identifying the order of the
-stylesheets your package needs to load. If not specified, stylesheets in the
+style sheets your package needs to load. If not specified, style sheets in the
 _stylesheets_ directory are added alphabetically.
 - `keymaps`(**Optional**): an Array of Strings identifying the order of the
 key mappings your package needs to load. If not specified, mappings in the
@@ -119,27 +119,27 @@ Also, please collaborate with us if you need an API that doesn't exist. Our goal
 is to build out Atom's API organically based on the needs of package authors
 like you.
 
-## Stylesheets
+## Style Sheets
 
-Stylesheets for your package should be placed in the _stylesheets_ directory.
-Any stylesheets in this directory will be loaded and attached to the DOM when
-your package is activated. Stylesheets can be written as CSS or [LESS] (but LESS
-is recommended).
+Style sheets for your package should be placed in the _stylesheets_ directory.
+Any style sheets in this directory will be loaded and attached to the DOM when
+your package is activated. Style sheets can be written as CSS or [LESS] (but
+LESS is recommended).
 
 Ideally, you won't need much in the way of styling. We've provided a standard
 set of components which define both the colors and UI elements for any package
-that fits into Atom seamlessly. You can view all of Atom's UI components by opening
-the styleguide: open the command palette (`cmd-shift-P`) and search for _styleguide_,
-or just type `cmd-ctrl-shift-G`.
+that fits into Atom seamlessly. You can view all of Atom's UI components by
+opening the styleguide: open the command palette (`cmd-shift-P`) and search for
+_styleguide_, or just type `cmd-ctrl-shift-G`.
 
-If you _do_ need special styling, try to keep only structural styles in the package
-stylesheets. If you _must_ specify colors and sizing, these should be taken from
-the active theme's [ui-variables.less][ui-variables]. For more information, see the
-[theme variables docs][theme-variables]. If you follow this guideline, your package
-will look good out of the box with any theme!
+If you _do_ need special styling, try to keep only structural styles in the
+package style sheets. If you _must_ specify colors and sizing, these should be
+taken from the active theme's [ui-variables.less][ui-variables]. For more
+information, see the [theme variables docs][theme-variables]. If you follow this
+guideline, your package will look good out of the box with any theme!
 
-An optional `stylesheets` array in your _package.json_ can list the stylesheets
-by name to specify a loading order; otherwise, stylesheets are loaded
+An optional `stylesheets` array in your _package.json_ can list the style sheets
+by name to specify a loading order; otherwise, style sheets are loaded
 alphabetically.
 
 ## Keymaps
@@ -157,9 +157,9 @@ loaded in alphabetical order. An optional `keymaps` array in your _package.json_
 can specify which keymaps to load and in what order.
 
 
-Keybindings are executed by determining which element the keypress occurred on. In
-the example above, `changer:magic` command is executed when pressing `ctrl-V` on
-the `.tree-view-scroller` element.
+Keybindings are executed by determining which element the keypress occurred on.
+In the example above, `changer:magic` command is executed when pressing `ctrl-V`
+on the `.tree-view-scroller` element.
 
 See the [main keymaps documentation][keymaps] for more detailed information on
 how keymaps work.
@@ -195,7 +195,8 @@ with your package that aren't tied to a specific element:
 ```
 
 To add your own item to the application menu, simply create a top level `menu`
-key in any menu configuration file in _menus_. This can be a JSON or [CSON] file.
+key in any menu configuration file in _menus_. This can be a JSON or [CSON]
+file.
 
 The menu templates you specify are merged with all other templates provided
 by other packages in the order which they were loaded.

docs/customizing-atom.md

@@ -118,7 +118,6 @@ You can open this file in an editor from the _Atom > Open Your Config_ menu.
       - `cr`: Carriage return (for Microsoft-style line endings)
       - `eol`: `\n` characters
       - `space`: Leading and trailing space characters
-  - `normalizeIndentOnPaste`: Enable/disable conversion of pasted tabs to spaces
   - `preferredLineLength`: Identifies the length of a line (defaults to `80`)
   - `showInvisibles`: Whether to render placeholders for invisible characters (defaults to `false`)
   - `showIndentGuide`: Show/hide indent indicators within the editor

docs/index.md

@@ -18,7 +18,6 @@
 * [Developing Node Modules](advanced/node-modules.md)
 * [Keymaps](advanced/keymaps.md)
 * [Serialization](advanced/serialization.md)
-* [View System](advanced/view-system.md)
 * [Scopes and Scope Descriptors](advanced/scopes-and-scope-descriptors.md)
 
 ### Upgrading to 1.0 APIs

docs/your-first-package.md

@@ -49,7 +49,7 @@ Register the command in _lib/ascii-art.coffee_:
 ```coffeescript
 module.exports =
   activate: ->
-    atom.workspaceView.command "ascii-art:convert", => @convert()
+    atom.commands.add 'atom-workspace', "ascii-art:convert", => @convert()
 
   convert: ->
     # This assumes the active pane item is an editor
@@ -57,10 +57,10 @@ module.exports =
     editor.insertText('Hello, World!')
 ```
 
-The `atom.workspaceView.command` method takes a command name and a callback. The
-callback executes when the command is triggered. In this case, when the command
-is triggered the callback will call the `convert` method and insert 'Hello,
-World!'.
+The `atom.commands.add` method takes a selector, command name, and a callback.
+The callback executes when the command is triggered on an element matching the
+selector. In this case, when the command is triggered the callback will call the
+`convert` method and insert 'Hello, World!'.
 
 ## Reload the Package
 
@@ -95,13 +95,13 @@ you don't need it anymore. When finished, the file will look like this:
   'cmd-alt-a': 'ascii-art:convert'
 ```
 
-Notice `atom-text-editor` on the first line. Just like CSS, keymap selectors *scope* key
-bindings so they only apply to specific elements. In this case, our binding is
-only active for elements matching the `atom-text-editor` selector. If the Tree View has
-focus, pressing `cmd-alt-a` won't trigger the `ascii-art:convert` command. But
-if the editor has focus, the `ascii-art:convert` method *will* be triggered.
-More information on key bindings can be found in the
-[keymaps](advanced/keymaps.html) documentation.
+Notice `atom-text-editor` on the first line. Just like CSS, keymap selectors
+*scope* key bindings so they only apply to specific elements. In this case, our
+binding is only active for elements matching the `atom-text-editor` selector. If
+the Tree View has focus, pressing `cmd-alt-a` won't trigger the
+`ascii-art:convert` command. But if the editor has focus, the
+`ascii-art:convert` method *will* be triggered. More information on key bindings
+can be found in the [keymaps](advanced/keymaps.html) documentation.
 
 Now reload the window and verify that the key binding works! You can also verify
 that it **doesn't** work when the Tree View is focused.

exports/atom.coffee

@@ -6,6 +6,7 @@ module.exports =
   BufferedNodeProcess: require '../src/buffered-node-process'
   BufferedProcess: require '../src/buffered-process'
   GitRepository: require '../src/git-repository'
+  Notification: require '../src/notification'
   Point: Point
   Range: Range
   Emitter: Emitter
@@ -32,7 +33,8 @@ unless process.env.ATOM_SHELL_INTERNAL_RUN_AS_NODE
   Object.defineProperty module.exports, 'WorkspaceView', get: ->
     deprecate """
       Requiring `WorkspaceView` from `atom` is no longer supported.
-      Use `atom.view.getView(atom.workspace)` instead.
+      Use `document.querySelector('atom-workspace')` if you need to access
+      the workspace element.
     """
     require '../src/workspace-view'
 
@@ -43,7 +45,7 @@ unless process.env.ATOM_SHELL_INTERNAL_RUN_AS_NODE
         `{$} = require 'space-pen'`
         or
         `$ = require 'jquery'`
-      Add `"space-pen": "^3"` to your package dependencies.
+      Add `"space-pen": "^4"` to your package dependencies.
       Or add `"jquery": "^2"` to your package dependencies.
     """
     $
@@ -53,7 +55,7 @@ unless process.env.ATOM_SHELL_INTERNAL_RUN_AS_NODE
       Requiring `$$` from `atom` is no longer supported.
       Please require `space-pen` instead:
         `{$$} = require 'space-pen'`
-      Add `"space-pen": "^3"` to your package dependencies.
+      Add `"space-pen": "^4"` to your package dependencies.
     """
     $$
 
@@ -62,7 +64,7 @@ unless process.env.ATOM_SHELL_INTERNAL_RUN_AS_NODE
       Requiring `$$$` from `atom` is no longer supported.
       Please require `space-pen` instead:
         `{$$$} = require 'space-pen'`
-      Add `"space-pen": "^3"` to your package dependencies.
+      Add `"space-pen": "^4"` to your package dependencies.
     """
     $$$
 
@@ -71,7 +73,7 @@ unless process.env.ATOM_SHELL_INTERNAL_RUN_AS_NODE
       Requiring `View` from `atom` is no longer supported.
       Please require `space-pen` instead:
         `{View} = require 'space-pen'`
-      Add `"space-pen": "^3"` to your package dependencies.
+      Add `"space-pen": "^4"` to your package dependencies.
     """
     View
 
@@ -118,8 +120,8 @@ unless process.env.ATOM_SHELL_INTERNAL_RUN_AS_NODE
     require 'react-atom-fork'
 
   Object.defineProperty module.exports, 'Reactionary', get: ->
-    deprecate "Please require `reactionary` instead: `Reactionary = require 'reactionary'`. Add `\"reactionary\": \"^0.9\"` to your package dependencies."
-    require 'reactionary'
+    deprecate "Please require `reactionary-atom-fork` instead: `Reactionary = require 'reactionary-atom-fork'`. Add `\"reactionary-atom-fork\": \"^0.9\"` to your package dependencies."
+    require 'reactionary-atom-fork'
 
 Object.defineProperty module.exports, 'Git', get: ->
   deprecate "Please require `GitRepository` instead of `Git`: `{GitRepository} = require 'atom'`"

package.json

@@ -1,7 +1,7 @@
 {
   "name": "atom",
   "productName": "Atom",
-  "version": "0.148.0",
+  "version": "0.153.0",
   "description": "A hackable text editor for the 21st Century.",
   "main": "./src/browser/main.js",
   "repository": {
@@ -17,10 +17,10 @@
       "url": "http://github.com/atom/atom/raw/master/LICENSE.md"
     }
   ],
-  "atomShellVersion": "0.19.2",
+  "atomShellVersion": "0.19.4",
   "dependencies": {
     "async": "0.2.6",
-    "atom-keymap": "^2.2.2",
+    "atom-keymap": "^2.3.0",
     "bootstrap": "git+https://github.com/atom/bootstrap.git#6af81906189f1747fd6c93479e3d998ebe041372",
     "clear-cut": "0.4.0",
     "coffee-script": "1.7.0",
@@ -29,7 +29,7 @@
     "emissary": "^1.3.1",
     "event-kit": "0.7.2",
     "first-mate": "^2.2.0",
-    "fs-plus": "^2.3.1",
+    "fs-plus": "^2.3.2",
     "fstream": "0.1.24",
     "fuzzaldrin": "^2.1",
     "git-utils": "^2.1.5",
@@ -39,12 +39,13 @@
     "jasmine-tagged": "^1.1.2",
     "jquery": "^2.1.1",
     "less-cache": "0.19.0",
+    "marked": "^0.3",
     "mixto": "^1",
     "mkdirp": "0.3.5",
     "nslog": "^1.0.1",
     "oniguruma": "^3.0.4",
     "optimist": "0.4.0",
-    "pathwatcher": "^2.3.2",
+    "pathwatcher": "^2.3.5",
     "property-accessors": "^1",
     "q": "^1.0.1",
     "random-words": "0.0.1",
@@ -57,91 +58,92 @@
     "season": "^1.0.2",
     "semver": "2.2.1",
     "serializable": "^1",
-    "space-pen": "3.8.1",
+    "space-pen": "3.8.2",
     "temp": "0.7.0",
-    "text-buffer": "^3.6.1",
+    "text-buffer": "^3.8.0",
     "theorist": "^1.0.2",
     "underscore-plus": "^1.6.1",
     "vm-compatibility-layer": "0.1.0"
   },
   "packageDependencies": {
-    "atom-dark-syntax": "0.22.0",
-    "atom-dark-ui": "0.39.0",
+    "atom-dark-syntax": "0.23.0",
+    "atom-dark-ui": "0.42.0",
     "atom-light-syntax": "0.22.0",
-    "atom-light-ui": "0.33.0",
+    "atom-light-ui": "0.36.0",
     "base16-tomorrow-dark-theme": "0.22.0",
     "base16-tomorrow-light-theme": "0.5.0",
-    "solarized-dark-syntax": "0.23.0",
+    "solarized-dark-syntax": "0.24.0",
     "solarized-light-syntax": "0.13.0",
     "archive-view": "0.37.0",
-    "autocomplete": "0.33.0",
+    "autocomplete": "0.33.1",
     "autoflow": "0.18.0",
     "autosave": "0.18.0",
     "background-tips": "0.17.0",
     "bookmarks": "0.30.0",
     "bracket-matcher": "0.62.0",
-    "command-palette": "0.28.0",
-    "deprecation-cop": "0.14.0",
+    "command-palette": "0.29.0",
+    "deprecation-cop": "0.18.0",
     "dev-live-reload": "0.35.0",
-    "encoding-selector": "0.7.0",
+    "encoding-selector": "0.8.0",
     "exception-reporting": "0.20.0",
     "find-and-replace": "0.147.0",
     "fuzzy-finder": "0.60.0",
     "git-diff": "0.43.0",
     "go-to-line": "0.26.0",
     "grammar-selector": "0.37.0",
-    "image-view": "0.40.0",
+    "image-view": "0.42.0",
     "incompatible-packages": "0.10.0",
     "keybinding-resolver": "0.20.0",
     "link": "0.26.0",
     "markdown-preview": "0.110.0",
     "metrics": "0.39.0",
+    "notifications": "0.4.0",
     "open-on-github": "0.30.0",
     "package-generator": "0.32.0",
     "release-notes": "0.36.0",
     "settings-view": "0.161.0",
-    "snippets": "0.56.0",
-    "spell-check": "0.43.0",
-    "status-bar": "0.46.0",
+    "snippets": "0.57.0",
+    "spell-check": "0.44.0",
+    "status-bar": "0.48.0",
     "styleguide": "0.30.0",
     "symbols-view": "0.68.0",
     "tabs": "0.56.0",
     "timecop": "0.23.0",
-    "tree-view": "0.132.0",
+    "tree-view": "0.134.0",
     "update-package-dependencies": "0.6.0",
     "welcome": "0.19.0",
     "whitespace": "0.26.0",
     "wrap-guide": "0.24.0",
     "language-c": "0.31.0",
-    "language-coffee-script": "0.38.0",
-    "language-css": "0.23.0",
-    "language-gfm": "0.53.0",
+    "language-coffee-script": "0.38.1",
+    "language-css": "0.23.1",
+    "language-gfm": "0.54.1",
     "language-git": "0.9.0",
-    "language-go": "0.19.0",
-    "language-html": "0.26.0",
-    "language-hyperlink": "0.12.0",
+    "language-go": "0.19.1",
+    "language-html": "0.26.1",
+    "language-hyperlink": "0.12.2",
     "language-java": "0.11.0",
-    "language-javascript": "0.43.0",
+    "language-javascript": "0.45.1",
     "language-json": "0.8.0",
-    "language-less": "0.18.0",
+    "language-less": "0.18.1",
     "language-make": "0.12.0",
-    "language-mustache": "0.10.0",
+    "language-mustache": "0.10.1",
     "language-objective-c": "0.11.0",
     "language-perl": "0.9.0",
     "language-php": "0.18.0",
     "language-property-list": "0.7.0",
-    "language-python": "0.24.0",
-    "language-ruby": "0.41.0",
+    "language-python": "0.24.1",
+    "language-ruby": "0.42.0",
     "language-ruby-on-rails": "0.18.0",
-    "language-sass": "0.26.0",
-    "language-shellscript": "0.10.0",
+    "language-sass": "0.26.1",
+    "language-shellscript": "0.10.1",
     "language-source": "0.8.0",
     "language-sql": "0.11.0",
     "language-text": "0.6.0",
     "language-todo": "0.13.0",
-    "language-toml": "0.14.0",
-    "language-xml": "0.24.0",
-    "language-yaml": "0.20.0"
+    "language-toml": "0.14.1",
+    "language-xml": "0.25.0",
+    "language-yaml": "0.20.1"
   },
   "private": true,
   "scripts": {

spec/atom-protocol-handler-spec.coffee

@@ -1,4 +1,4 @@
-{$} = require 'atom'
+{$} = require '../src/space-pen-extensions'
 
 describe '"atom" protocol URL', ->
   it 'sends the file relative in the package as response', ->

spec/atom-reporter.coffee

@@ -3,6 +3,7 @@ _ = require 'underscore-plus'
 {convertStackTrace} = require 'coffeestack'
 {View, $, $$} = require '../src/space-pen-extensions'
 grim = require 'grim'
+marked = require 'marked'
 
 sourceMaps = {}
 formatStackTrace = (spec, message='', stackTrace) ->
@@ -110,7 +111,8 @@ class AtomReporter extends View
     for deprecation in deprecations
       @deprecationList.append $$ ->
         @div class: 'padded', =>
-          @div class: 'result-message fail deprecation-message', deprecation.message
+          @div class: 'result-message fail deprecation-message', =>
+            @raw marked(deprecation.message)
 
           for stack in deprecation.stacks
             fullStack = stack.map ({functionName, location}) ->

spec/atom-spec.coffee

@@ -1,13 +1,10 @@
-{$, $$, WorkspaceView}  = require 'atom'
+{$, $$}  = require '../src/space-pen-extensions'
 Exec = require('child_process').exec
 path = require 'path'
 Package = require '../src/package'
 ThemeManager = require '../src/theme-manager'
 
 describe "the `atom` global", ->
-  beforeEach ->
-    atom.workspaceView = atom.views.getView(atom.workspace).__spacePenView
-
   describe 'window sizing methods', ->
     describe '::getPosition and ::setPosition', ->
       it 'sets the position of the window, and can retrieve the position just set', ->
@@ -33,10 +30,16 @@ describe "the `atom` global", ->
       version = '36b5518'
       expect(atom.isReleasedVersion()).toBe false
 
-  describe "window:update-available", ->
-    it "is triggered when the auto-updater sends the update-downloaded event", ->
+  describe "when an update becomes available", ->
+    subscription = null
+
+    afterEach ->
+      subscription?.dispose()
+
+    it "invokes onUpdateAvailable listeners", ->
       updateAvailableHandler = jasmine.createSpy("update-available-handler")
-      atom.workspaceView.on 'window:update-available', updateAvailableHandler
+      subscription = atom.onUpdateAvailable updateAvailableHandler
+
       autoUpdater = require('remote').require('auto-updater')
       autoUpdater.emit 'update-downloaded', null, "notes", "version"
 
@@ -44,9 +47,9 @@ describe "the `atom` global", ->
         updateAvailableHandler.callCount > 0
 
       runs ->
-        [event, version, notes] = updateAvailableHandler.mostRecentCall.args
-        expect(notes).toBe 'notes'
-        expect(version).toBe 'version'
+        {releaseVersion, releaseNotes} = updateAvailableHandler.mostRecentCall.args[0]
+        expect(releaseVersion).toBe 'version'
+        expect(releaseNotes).toBe 'notes'
 
   describe "loading default config", ->
     it 'loads the default core config', ->

spec/config-spec.coffee

@@ -128,6 +128,12 @@ describe "Config", ->
       expect(atom.config.get("foo")).toEqual 'a\\.b': 1, b: 2
 
   describe ".toggle(keyPath)", ->
+    beforeEach ->
+      jasmine.snapshotDeprecations()
+
+    afterEach ->
+      jasmine.restoreDeprecationsSnapshot()
+
     it "negates the boolean value of the current key path value", ->
       atom.config.set('foo.a', 1)
       atom.config.toggle('foo.a')
@@ -298,6 +304,12 @@ describe "Config", ->
       expect(observeHandler).toHaveBeenCalledWith atom.config.get("foo.bar.baz")
 
   describe ".getPositiveInt(keyPath, defaultValue)", ->
+    beforeEach ->
+      jasmine.snapshotDeprecations()
+
+    afterEach ->
+      jasmine.restoreDeprecationsSnapshot()
+
     it "returns the proper coerced value", ->
       atom.config.set('editor.preferredLineLength', 0)
       expect(atom.config.getPositiveInt('editor.preferredLineLength', 80)).toBe 1
@@ -470,7 +482,7 @@ describe "Config", ->
 
     it "does not fire the callback once the observe subscription is off'ed", ->
       observeHandler.reset() # clear the initial call
-      observeSubscription.off()
+      observeSubscription.dispose()
       atom.config.set('foo.bar.baz', "value 2")
       expect(observeHandler).not.toHaveBeenCalled()
 
@@ -554,11 +566,13 @@ describe "Config", ->
     describe "when the config file contains invalid cson", ->
       beforeEach ->
         spyOn(console, 'error')
+        spyOn(atom.notifications, 'addError')
         fs.writeFileSync(atom.config.configFilePath, "{{{{{")
 
       it "logs an error to the console and does not overwrite the config file on a subsequent save", ->
         atom.config.loadUserConfig()
         expect(console.error).toHaveBeenCalled()
+        expect(atom.notifications.addError.callCount).toBe 1
         atom.config.set("hair", "blonde") # trigger a save
         expect(atom.config.save).not.toHaveBeenCalled()
 
@@ -692,7 +706,6 @@ describe "Config", ->
             expect(atom.config.get(['.source.ruby'], 'foo.bar')).toBe 'baz'
             expect(atom.config.get(['.source.ruby'], 'foo.scoped')).toBe true
 
-
     describe "when the config file changes to omit a setting with a default", ->
       it "resets the setting back to the default", ->
         fs.writeFileSync(atom.config.configFilePath, "foo: { baz: 'new'}")

spec/context-menu-manager-spec.coffee

@@ -1,4 +1,4 @@
-{$$} = require 'atom'
+{$$} = require '../src/space-pen-extensions'
 
 ContextMenuManager = require '../src/context-menu-manager'
 
@@ -151,24 +151,31 @@ describe "ContextMenuManager", ->
       shouldDisplay = false
       expect(contextMenu.templateForEvent(dispatchedEvent)).toEqual []
 
-    it "allows items to be specified in the legacy format for now", ->
-      contextMenu.add '.parent':
-        'A': 'a'
-        'Separator 1': '-'
-        'B':
-          'C': 'c'
-          'Separator 2': '-'
-          'D': 'd'
+    describe "when the menus are specified in a legacy format", ->
+      beforeEach ->
+        jasmine.snapshotDeprecations()
 
-      expect(contextMenu.templateForElement(parent)).toEqual [
-        {label: 'A', command: 'a'}
-        {type: 'separator'}
-        {
-          label: 'B'
-          submenu: [
-            {label: 'C', command: 'c'}
-            {type: 'separator'}
-            {label: 'D', command: 'd'}
-          ]
-        }
-      ]
+      afterEach ->
+        jasmine.restoreDeprecationsSnapshot()
+
+      it "allows items to be specified in the legacy format for now", ->
+        contextMenu.add '.parent':
+          'A': 'a'
+          'Separator 1': '-'
+          'B':
+            'C': 'c'
+            'Separator 2': '-'
+            'D': 'd'
+
+        expect(contextMenu.templateForElement(parent)).toEqual [
+          {label: 'A', command: 'a'}
+          {type: 'separator'}
+          {
+            label: 'B'
+            submenu: [
+              {label: 'C', command: 'c'}
+              {type: 'separator'}
+              {label: 'D', command: 'd'}
+            ]
+          }
+        ]

spec/fixtures/packages/package-with-activation-commands/index.coffee

@@ -9,5 +9,6 @@ module.exports =
     atom.commands.add 'atom-workspace', 'activation-command', =>
       @activationCommandCallCount++
 
-    atom.workspaceView.getActiveView()?.command 'activation-command', =>
+    editorView = document.querySelector('atom-workspace').getView(atom.workspace.getActiveEditor())?.__spacePenView
+    editorView?.command 'activation-command', =>
       @legacyActivationCommandCallCount++

spec/fixtures/packages/package-with-menus-manifest/menus/menu-1.cson

@@ -3,5 +3,6 @@
 ]
 
 'context-menu':
-  '.test-1':
-    'Menu item 1': 'command-1'
+  '.test-1': [
+    {label: 'Menu item 1', command: 'command-1'}
+  ]

spec/fixtures/packages/package-with-menus-manifest/menus/menu-2.cson

@@ -3,5 +3,6 @@
 ]
 
 'context-menu':
-  '.test-1':
-    'Menu item 2': 'command-2'
+  '.test-1': [
+    {label: 'Menu item 2', command: 'command-2'}
+  ]

spec/fixtures/packages/package-with-menus-manifest/menus/menu-3.cson

@@ -1,3 +1,4 @@
 'context-menu':
-  '.test-1':
-    'Menu item 3': 'command-3'
+  '.test-1': [
+    {label: 'Menu item 3', command: 'command-3'}
+  ]

spec/notification-manager-spec.coffee

@@ -0,0 +1,57 @@
+NotificationManager = require '../src/notification-manager'
+
+describe "NotificationManager", ->
+  [manager] = []
+
+  beforeEach ->
+    manager = new NotificationManager
+
+  describe "the atom global", ->
+    it "has a notifications instance", ->
+      expect(atom.notifications instanceof NotificationManager).toBe true
+
+  describe "adding events", ->
+    addSpy = null
+
+    beforeEach ->
+      addSpy = jasmine.createSpy()
+      manager.onDidAddNotification(addSpy)
+
+    it "emits an event when a notification has been added", ->
+      manager.add('error', 'Some error!', icon: 'someIcon')
+      expect(addSpy).toHaveBeenCalled()
+
+      notification = addSpy.mostRecentCall.args[0]
+      expect(notification.getType()).toBe 'error'
+      expect(notification.getMessage()).toBe 'Some error!'
+      expect(notification.getIcon()).toBe 'someIcon'
+
+    it "emits a fatal error ::addFatalError has been called", ->
+      manager.addFatalError('Some error!', icon: 'someIcon')
+      expect(addSpy).toHaveBeenCalled()
+      notification = addSpy.mostRecentCall.args[0]
+      expect(notification.getType()).toBe 'fatal'
+
+    it "emits an error ::addError has been called", ->
+      manager.addError('Some error!', icon: 'someIcon')
+      expect(addSpy).toHaveBeenCalled()
+      notification = addSpy.mostRecentCall.args[0]
+      expect(notification.getType()).toBe 'error'
+
+    it "emits a warning notification ::addWarning has been called", ->
+      manager.addWarning('Something!', icon: 'someIcon')
+      expect(addSpy).toHaveBeenCalled()
+      notification = addSpy.mostRecentCall.args[0]
+      expect(notification.getType()).toBe 'warning'
+
+    it "emits an info notification ::addInfo has been called", ->
+      manager.addInfo('Something!', icon: 'someIcon')
+      expect(addSpy).toHaveBeenCalled()
+      notification = addSpy.mostRecentCall.args[0]
+      expect(notification.getType()).toBe 'info'
+
+    it "emits a success notification ::addSuccess has been called", ->
+      manager.addSuccess('Something!', icon: 'someIcon')
+      expect(addSpy).toHaveBeenCalled()
+      notification = addSpy.mostRecentCall.args[0]
+      expect(notification.getType()).toBe 'success'

spec/notification-spec.coffee

@@ -0,0 +1,18 @@
+Notification = require '../src/notification'
+
+describe "Notification", ->
+  [notification] = []
+
+  describe "::getTimestamp()", ->
+    it "returns a Date object", ->
+      notification = new Notification('error', 'message!')
+      expect(notification.getTimestamp() instanceof Date).toBe true
+
+  describe "::getIcon()", ->
+    it "returns a default when no icon specified", ->
+      notification = new Notification('error', 'message!')
+      expect(notification.getIcon()).toBe 'flame'
+
+    it "returns the icon specified", ->
+      notification = new Notification('error', 'message!', icon: 'my-icon')
+      expect(notification.getIcon()).toBe 'my-icon'

spec/package-manager-spec.coffee

@@ -1,9 +1,10 @@
-{$, $$, WorkspaceView}  = require 'atom'
+{$, $$} = require '../src/space-pen-extensions'
 Package = require '../src/package'
 
 describe "PackageManager", ->
+  workspaceElement = null
   beforeEach ->
-    atom.workspaceView = atom.views.getView(atom.workspace).__spacePenView
+    workspaceElement = atom.views.createView(atom.workspace)
 
   describe "::loadPackage(name)", ->
     it "continues if the package has an invalid package.json", ->
@@ -97,21 +98,29 @@ describe "PackageManager", ->
             expect(atom.config.set('package-with-config-schema.numbers.one', '10')).toBe true
             expect(atom.config.get('package-with-config-schema.numbers.one')).toBe 10
 
-        it "still assigns configDefaults from the module though deprecated", ->
-          expect(atom.config.get('package-with-config-defaults.numbers.one')).toBeUndefined()
+        describe "when a package has configDefaults", ->
+          beforeEach ->
+            jasmine.snapshotDeprecations()
 
-          waitsForPromise ->
-            atom.packages.activatePackage('package-with-config-defaults')
+          afterEach ->
+            jasmine.restoreDeprecationsSnapshot()
 
-          runs ->
-            expect(atom.config.get('package-with-config-defaults.numbers.one')).toBe 1
-            expect(atom.config.get('package-with-config-defaults.numbers.two')).toBe 2
+          it "still assigns configDefaults from the module though deprecated", ->
+
+            expect(atom.config.get('package-with-config-defaults.numbers.one')).toBeUndefined()
+
+            waitsForPromise ->
+              atom.packages.activatePackage('package-with-config-defaults')
+
+            runs ->
+              expect(atom.config.get('package-with-config-defaults.numbers.one')).toBe 1
+              expect(atom.config.get('package-with-config-defaults.numbers.two')).toBe 2
 
         describe "when the package metadata includes `activationCommands`", ->
           [mainModule, promise, workspaceCommandListener] = []
 
           beforeEach ->
-            atom.workspaceView.attachToDom()
+            jasmine.attachToDOM(workspaceElement)
             mainModule = require './fixtures/packages/package-with-activation-commands/index'
             mainModule.legacyActivationCommandCallCount = 0
             mainModule.activationCommandCallCount = 0
@@ -125,29 +134,29 @@ describe "PackageManager", ->
 
           it "defers requiring/activating the main module until an activation event bubbles to the root view", ->
             expect(promise.isFulfilled()).not.toBeTruthy()
-            atom.workspaceView[0].dispatchEvent(new CustomEvent('activation-command', bubbles: true))
+            workspaceElement.dispatchEvent(new CustomEvent('activation-command', bubbles: true))
 
             waitsForPromise ->
               promise
 
           it "triggers the activation event on all handlers registered during activation", ->
             waitsForPromise ->
-              atom.workspaceView.open()
+              atom.workspace.open()
 
             runs ->
-              editorView = atom.workspaceView.getActiveView()
+              editorView = workspaceElement.getView(atom.workspace.getActiveEditor()).__spacePenView
               legacyCommandListener = jasmine.createSpy("legacyCommandListener")
               editorView.command 'activation-command', legacyCommandListener
               editorCommandListener = jasmine.createSpy("editorCommandListener")
               atom.commands.add 'atom-text-editor', 'activation-command', editorCommandListener
-              editorView[0].dispatchEvent(new CustomEvent('activation-command', bubbles: true))
+              atom.commands.dispatch(editorView[0], 'activation-command')
               expect(mainModule.activate.callCount).toBe 1
               expect(mainModule.legacyActivationCommandCallCount).toBe 1
               expect(mainModule.activationCommandCallCount).toBe 1
               expect(legacyCommandListener.callCount).toBe 1
               expect(editorCommandListener.callCount).toBe 1
               expect(workspaceCommandListener.callCount).toBe 1
-              editorView[0].dispatchEvent(new CustomEvent('activation-command', bubbles: true))
+              atom.commands.dispatch(editorView[0], 'activation-command')
               expect(mainModule.legacyActivationCommandCallCount).toBe 2
               expect(mainModule.activationCommandCallCount).toBe 2
               expect(legacyCommandListener.callCount).toBe 2
@@ -349,8 +358,8 @@ describe "PackageManager", ->
             atom.packages.activatePackage('package-with-grammars')
 
           runs ->
-            expect(atom.syntax.selectGrammar('a.alot').name).toBe 'Alot'
-            expect(atom.syntax.selectGrammar('a.alittle').name).toBe 'Alittle'
+            expect(atom.grammars.selectGrammar('a.alot').name).toBe 'Alot'
+            expect(atom.grammars.selectGrammar('a.alittle').name).toBe 'Alittle'
 
       describe "scoped-property loading", ->
         it "loads the scoped properties", ->
@@ -362,13 +371,13 @@ describe "PackageManager", ->
 
     describe "converted textmate packages", ->
       it "loads the package's grammars", ->
-        expect(atom.syntax.selectGrammar("file.rb").name).toBe "Null Grammar"
+        expect(atom.grammars.selectGrammar("file.rb").name).toBe "Null Grammar"
 
         waitsForPromise ->
           atom.packages.activatePackage('language-ruby')
 
         runs ->
-          expect(atom.syntax.selectGrammar("file.rb").name).toBe "Ruby"
+          expect(atom.grammars.selectGrammar("file.rb").name).toBe "Ruby"
 
       it "loads the translated scoped properties", ->
         expect(atom.config.get(['.source.ruby'], 'editor.commentStart')).toBeUndefined()
@@ -454,8 +463,8 @@ describe "PackageManager", ->
 
         runs ->
           atom.packages.deactivatePackage('package-with-grammars')
-          expect(atom.syntax.selectGrammar('a.alot').name).toBe 'Null Grammar'
-          expect(atom.syntax.selectGrammar('a.alittle').name).toBe 'Null Grammar'
+          expect(atom.grammars.selectGrammar('a.alot').name).toBe 'Null Grammar'
+          expect(atom.grammars.selectGrammar('a.alittle').name).toBe 'Null Grammar'
 
       it "removes the package's keymaps", ->
         waitsForPromise ->
@@ -490,15 +499,15 @@ describe "PackageManager", ->
 
     describe "textmate packages", ->
       it "removes the package's grammars", ->
-        expect(atom.syntax.selectGrammar("file.rb").name).toBe "Null Grammar"
+        expect(atom.grammars.selectGrammar("file.rb").name).toBe "Null Grammar"
 
         waitsForPromise ->
           atom.packages.activatePackage('language-ruby')
 
         runs ->
-          expect(atom.syntax.selectGrammar("file.rb").name).toBe "Ruby"
+          expect(atom.grammars.selectGrammar("file.rb").name).toBe "Ruby"
           atom.packages.deactivatePackage('language-ruby')
-          expect(atom.syntax.selectGrammar("file.rb").name).toBe "Null Grammar"
+          expect(atom.grammars.selectGrammar("file.rb").name).toBe "Null Grammar"
 
       it "removes the package's scoped properties", ->
         waitsForPromise ->
@@ -513,6 +522,7 @@ describe "PackageManager", ->
     themeActivator = null
 
     beforeEach ->
+      jasmine.snapshotDeprecations()
       spyOn(console, 'warn')
       atom.packages.loadPackages()
 
@@ -526,8 +536,9 @@ describe "PackageManager", ->
       atom.packages.deactivatePackages()
       atom.packages.unloadPackages()
 
-      Syntax = require '../src/syntax'
-      atom.syntax = window.syntax = new Syntax()
+      GrammarRegistry = require '../src/grammar-registry'
+      atom.grammars = window.syntax = new GrammarRegistry()
+      jasmine.restoreDeprecationsSnapshot()
 
     it "activates all the packages, and none of the themes", ->
       atom.packages.activate()

spec/package-spec.coffee

@@ -1,4 +1,4 @@
-{$} = require 'atom'
+{$} = require '../src/space-pen-extensions'
 path = require 'path'
 Package = require '../src/package'
 ThemePackage = require '../src/theme-package'

spec/pane-container-view-spec.coffee

@@ -3,10 +3,12 @@ temp = require 'temp'
 PaneContainer = require '../src/pane-container'
 PaneContainerView = require '../src/pane-container-view'
 PaneView = require '../src/pane-view'
-{$, View, $$} = require 'atom'
+{Disposable} = require 'event-kit'
+{$, View, $$} = require '../src/space-pen-extensions'
+ViewRegistry = require '../src/view-registry'
 
 describe "PaneContainerView", ->
-  [TestView, container, pane1, pane2, pane3, deserializerDisposable] = []
+  [viewRegistry, TestView, container, pane1, pane2, pane3, deserializerDisposable] = []
 
   beforeEach ->
     class TestView extends View
@@ -18,8 +20,11 @@ describe "PaneContainerView", ->
       getUri: -> path.join(temp.dir, @name)
       save: -> @saved = true
       isEqual: (other) -> @name is other?.name
+      onDidChangeTitle: -> new Disposable(->)
+      onDidChangeModified: -> new Disposable(->)
 
-    container = atom.views.getView(atom.workspace.paneContainer).__spacePenView
+    viewRegistry = new ViewRegistry(atom.views)
+    container = atom.views.createView(atom.workspace.paneContainer, {viewRegistry}).__spacePenView
     pane1 = container.getRoot()
     pane1.activateItem(new TestView('1'))
     pane2 = pane1.splitRight(new TestView('2'))
@@ -73,7 +78,7 @@ describe "PaneContainerView", ->
 
   describe "serialization", ->
     it "can be serialized and deserialized, and correctly adjusts dimensions of deserialized panes after attach", ->
-      newContainer = atom.views.getView(container.model.testSerialization()).__spacePenView
+      newContainer = atom.views.createView(container.model.testSerialization(), {viewRegistry}).__spacePenView
       expect(newContainer.find('atom-pane-axis.horizontal > :contains(1)')).toExist()
       expect(newContainer.find('atom-pane-axis.horizontal > atom-pane-axis.vertical > :contains(2)')).toExist()
       expect(newContainer.find('atom-pane-axis.horizontal > atom-pane-axis.vertical > :contains(3)')).toExist()
@@ -89,14 +94,14 @@ describe "PaneContainerView", ->
 
       describe "if the 'core.destroyEmptyPanes' config option is false (the default)", ->
         it "leaves the empty panes intact", ->
-          newContainer = atom.views.getView(container.model.testSerialization()).__spacePenView
+          newContainer = atom.views.createView(container.model.testSerialization(), {viewRegistry}).__spacePenView
           expect(newContainer.find('atom-pane-axis.horizontal > :contains(1)')).toExist()
           expect(newContainer.find('atom-pane-axis.horizontal > atom-pane-axis.vertical > atom-pane').length).toBe 2
 
       describe "if the 'core.destroyEmptyPanes' config option is true", ->
         it "removes empty panes on deserialization", ->
           atom.config.set('core.destroyEmptyPanes', true)
-          newContainer = atom.views.getView(container.model.testSerialization()).__spacePenView
+          newContainer = atom.views.createView(container.model.testSerialization(), {viewRegistry}).__spacePenView
           expect(newContainer.find('atom-pane-axis.horizontal, atom-pane-axis.vertical')).not.toExist()
           expect(newContainer.find('> :contains(1)')).toExist()
 
@@ -109,7 +114,7 @@ describe "PaneContainerView", ->
       item2b = new TestView('2b')
       item3a = new TestView('3a')
 
-      container = atom.views.getView(new PaneContainer).__spacePenView
+      container = atom.views.createView(new PaneContainer, {viewRegistry}).__spacePenView
       pane1 = container.getRoot()
       pane1.activateItem(item1a)
       container.attachToDom()
@@ -259,7 +264,7 @@ describe "PaneContainerView", ->
       # |7|8|9|
       # -------
 
-      container = atom.views.getView(new PaneContainer).__spacePenView
+      container = atom.views.createView(new PaneContainer, {viewRegistry}).__spacePenView
       pane1 = container.getRoot()
       pane1.activateItem(new TestView('1'))
       pane4 = pane1.splitDown(new TestView('4'))

spec/pane-view-spec.coffee

@@ -1,13 +1,14 @@
 PaneContainer = require '../src/pane-container'
 PaneView = require '../src/pane-view'
+ViewRegistry = require '../src/view-registry'
 fs = require 'fs-plus'
-{Emitter} = require 'event-kit'
-{$, View} = require 'atom'
+{Emitter, Disposable} = require 'event-kit'
+{$, View} = require '../src/space-pen-extensions'
 path = require 'path'
 temp = require 'temp'
 
 describe "PaneView", ->
-  [container, containerModel, view1, view2, editor1, editor2, pane, paneModel, deserializerDisposable] = []
+  [viewRegistry, container, containerModel, view1, view2, editor1, editor2, pane, paneModel, deserializerDisposable] = []
 
   class TestView extends View
     @deserialize: ({id, text}) -> new TestView({id, text})
@@ -21,10 +22,14 @@ describe "PaneView", ->
       @emitter.emit 'did-change-title', 'title'
     onDidChangeTitle: (callback) ->
       @emitter.on 'did-change-title', callback
+    onDidChangeModified: -> new Disposable(->)
 
   beforeEach ->
+    jasmine.snapshotDeprecations()
+
     deserializerDisposable = atom.deserializers.add(TestView)
-    container = atom.views.getView(new PaneContainer).__spacePenView
+    viewRegistry = new ViewRegistry(atom.views)
+    container = atom.views.createView(new PaneContainer, {viewRegistry}).__spacePenView
     containerModel = container.model
     view1 = new TestView(id: 'view-1', text: 'View 1')
     view2 = new TestView(id: 'view-2', text: 'View 2')
@@ -41,6 +46,7 @@ describe "PaneView", ->
 
   afterEach ->
     deserializerDisposable.dispose()
+    jasmine.restoreDeprecationsSnapshot()
 
   describe "when the active pane item changes", ->
     it "hides all item views except the active one", ->
@@ -155,14 +161,19 @@ describe "PaneView", ->
       expect(view1.is(':visible')).toBe true
 
   describe "when the title of the active item changes", ->
-    describe 'when there is no onDidChangeTitle method', ->
+    describe 'when there is no onDidChangeTitle method (deprecated)', ->
       beforeEach ->
+        jasmine.snapshotDeprecations()
+
         view1.onDidChangeTitle = null
         view2.onDidChangeTitle = null
 
         pane.activateItem(view2)
         pane.activateItem(view1)
 
+      afterEach ->
+        jasmine.restoreDeprecationsSnapshot()
+
       it "emits pane:active-item-title-changed", ->
         activeItemTitleChangedHandler = jasmine.createSpy("activeItemTitleChangedHandler")
         pane.on 'pane:active-item-title-changed', activeItemTitleChangedHandler
@@ -220,7 +231,7 @@ describe "PaneView", ->
 
     beforeEach ->
       pane2Model = paneModel.splitRight() # Can't destroy the last pane, so we add another
-      pane2 = containerModel.getView(pane2Model).__spacePenView
+      pane2 = viewRegistry.getView(pane2Model).__spacePenView
 
     it "triggers a 'pane:removed' event with the pane", ->
       removedHandler = jasmine.createSpy("removedHandler")
@@ -253,7 +264,7 @@ describe "PaneView", ->
 
     beforeEach ->
       pane2Model = paneModel.splitRight(items: [pane.copyActiveItem()])
-      pane2 = containerModel.getView(pane2Model).__spacePenView
+      pane2 = viewRegistry.getView(pane2Model).__spacePenView
       expect(pane2Model.isActive()).toBe true
 
     it "adds or removes the .active class as appropriate", ->
@@ -300,8 +311,8 @@ describe "PaneView", ->
       pane2Model = pane1Model.splitRight(items: [pane1Model.copyActiveItem()])
       pane3Model = pane2Model.splitDown(items: [pane2Model.copyActiveItem()])
       pane2 = pane2Model._view
-      pane2 = containerModel.getView(pane2Model).__spacePenView
-      pane3 = containerModel.getView(pane3Model).__spacePenView
+      pane2 = viewRegistry.getView(pane2Model).__spacePenView
+      pane3 = viewRegistry.getView(pane3Model).__spacePenView
 
       expect(container.find('> atom-pane-axis.horizontal > atom-pane').toArray()).toEqual [pane1[0]]
       expect(container.find('> atom-pane-axis.horizontal > atom-pane-axis.vertical > atom-pane').toArray()).toEqual [pane2[0], pane3[0]]
@@ -314,13 +325,13 @@ describe "PaneView", ->
       container.attachToDom()
       pane.focus()
 
-      container2 = atom.views.getView(container.model.testSerialization()).__spacePenView
+      container2 = viewRegistry.getView(container.model.testSerialization()).__spacePenView
       pane2 = container2.getRoot()
       container2.attachToDom()
       expect(pane2).toMatchSelector(':has(:focus)')
 
       $(document.activeElement).blur()
-      container3 = atom.views.getView(container.model.testSerialization()).__spacePenView
+      container3 = viewRegistry.getView(container.model.testSerialization()).__spacePenView
       pane3 = container3.getRoot()
       container3.attachToDom()
       expect(pane3).not.toMatchSelector(':has(:focus)')

spec/panel-container-element-spec.coffee

@@ -1,8 +1,8 @@
-ViewRegistry = require '../src/view-registry'
 Panel = require '../src/panel'
 PanelElement = require '../src/panel-element'
 PanelContainer = require '../src/panel-container'
 PanelContainerElement = require '../src/panel-container-element'
+ViewRegistry = require '../src/view-registry'
 
 describe "PanelContainerElement", ->
   [jasmineContent, element, container, viewRegistry] = []
@@ -13,25 +13,26 @@ describe "PanelContainerElement", ->
   class TestPanelContainerItemElement extends HTMLElement
     createdCallback: ->
       @classList.add('test-root')
-    setModel: (@model) ->
+    initialize: ({@model}) ->
   TestPanelContainerItemElement = document.registerElement 'atom-test-container-item-element', prototype: TestPanelContainerItemElement.prototype
 
   beforeEach ->
     jasmineContent = document.body.querySelector('#jasmine-content')
 
-    viewRegistry = new ViewRegistry
-    viewRegistry.addViewProvider
+    atom.views.addViewProvider
       modelConstructor: Panel
       viewConstructor: PanelElement
-    viewRegistry.addViewProvider
+    atom.views.addViewProvider
       modelConstructor: PanelContainer
       viewConstructor: PanelContainerElement
-    viewRegistry.addViewProvider
+    atom.views.addViewProvider
       modelConstructor: TestPanelContainerItem
       viewConstructor: TestPanelContainerItemElement
 
-    container = new PanelContainer({viewRegistry, location: 'left'})
-    element = container.getView()
+
+    container = new PanelContainer({location: 'left'})
+    viewRegistry = new ViewRegistry(atom.views)
+    element = viewRegistry.getView(container, {viewRegistry})
     jasmineContent.appendChild(element)
 
   it 'has a location class with value from the model', ->
@@ -43,23 +44,38 @@ describe "PanelContainerElement", ->
     expect(element.parentNode).not.toBe jasmineContent
 
   describe "adding and removing panels", ->
+    it "allows panels to be inserted at any position", ->
+      panel1 = new Panel({item: new TestPanelContainerItem(), priority: 10})
+      panel2 = new Panel({item: new TestPanelContainerItem(), priority: 5})
+      panel3 = new Panel({item: new TestPanelContainerItem(), priority: 8})
+
+      container.addPanel(panel1)
+      container.addPanel(panel2)
+      container.addPanel(panel3)
+
+      expect(element.childNodes[2].getModel()).toBe(panel1)
+      expect(element.childNodes[1].getModel()).toBe(panel3)
+      expect(element.childNodes[0].getModel()).toBe(panel2)
+
     describe "when the container is at the left location", ->
       it "adds atom-panel elements when a new panel is added to the container; removes them when the panels are destroyed", ->
         expect(element.childNodes.length).toBe 0
 
-        panel1 = new Panel({viewRegistry, item: new TestPanelContainerItem()})
+        panel1 = new Panel({item: new TestPanelContainerItem()})
         container.addPanel(panel1)
         expect(element.childNodes.length).toBe 1
         expect(element.childNodes[0]).toHaveClass 'left'
+        expect(element.childNodes[0]).toHaveClass 'tool-panel' # legacy selector support
+        expect(element.childNodes[0]).toHaveClass 'panel-left' # legacy selector support
 
         expect(element.childNodes[0].tagName).toBe 'ATOM-PANEL'
 
-        panel2 = new Panel({viewRegistry, item: new TestPanelContainerItem()})
+        panel2 = new Panel({item: new TestPanelContainerItem()})
         container.addPanel(panel2)
         expect(element.childNodes.length).toBe 2
 
-        expect(panel1.getView().style.display).not.toBe 'none'
-        expect(panel2.getView().style.display).not.toBe 'none'
+        expect(viewRegistry.getView(panel1).style.display).not.toBe 'none'
+        expect(viewRegistry.getView(panel2).style.display).not.toBe 'none'
 
         panel1.destroy()
         expect(element.childNodes.length).toBe 1
@@ -69,24 +85,26 @@ describe "PanelContainerElement", ->
 
     describe "when the container is at the bottom location", ->
       beforeEach ->
-        container = new PanelContainer({viewRegistry, location: 'bottom'})
-        element = container.getView()
+        container = new PanelContainer({location: 'bottom'})
+        element = viewRegistry.getView(container)
         jasmineContent.appendChild(element)
 
       it "adds atom-panel elements when a new panel is added to the container; removes them when the panels are destroyed", ->
         expect(element.childNodes.length).toBe 0
 
-        panel1 = new Panel({viewRegistry, item: new TestPanelContainerItem(), className: 'one'})
+        panel1 = new Panel({item: new TestPanelContainerItem(), className: 'one'})
         container.addPanel(panel1)
         expect(element.childNodes.length).toBe 1
         expect(element.childNodes[0]).toHaveClass 'bottom'
+        expect(element.childNodes[0]).toHaveClass 'tool-panel' # legacy selector support
+        expect(element.childNodes[0]).toHaveClass 'panel-bottom' # legacy selector support
         expect(element.childNodes[0].tagName).toBe 'ATOM-PANEL'
-        expect(panel1.getView()).toHaveClass 'one'
+        expect(viewRegistry.getView(panel1)).toHaveClass 'one'
 
-        panel2 = new Panel({viewRegistry, item: new TestPanelContainerItem(), className: 'two'})
+        panel2 = new Panel({item: new TestPanelContainerItem(), className: 'two'})
         container.addPanel(panel2)
         expect(element.childNodes.length).toBe 2
-        expect(panel2.getView()).toHaveClass 'two'
+        expect(viewRegistry.getView(panel2)).toHaveClass 'two'
 
         panel1.destroy()
         expect(element.childNodes.length).toBe 1
@@ -96,23 +114,34 @@ describe "PanelContainerElement", ->
 
   describe "when the container is modal", ->
     beforeEach ->
-      container = new PanelContainer({viewRegistry, location: 'modal'})
-      element = container.getView()
+      container = new PanelContainer({location: 'modal'})
+      element = viewRegistry.getView(container)
       jasmineContent.appendChild(element)
 
     it "allows only one panel to be visible at a time", ->
-      panel1 = new Panel({viewRegistry, item: new TestPanelContainerItem()})
+      panel1 = new Panel({item: new TestPanelContainerItem()})
       container.addPanel(panel1)
 
-      expect(panel1.getView().style.display).not.toBe 'none'
+      expect(viewRegistry.getView(panel1).style.display).not.toBe 'none'
 
-      panel2 = new Panel({viewRegistry, item: new TestPanelContainerItem()})
+      panel2 = new Panel({item: new TestPanelContainerItem()})
       container.addPanel(panel2)
 
-      expect(panel1.getView().style.display).toBe 'none'
-      expect(panel2.getView().style.display).not.toBe 'none'
+      expect(viewRegistry.getView(panel1).style.display).toBe 'none'
+      expect(viewRegistry.getView(panel2).style.display).not.toBe 'none'
 
       panel1.show()
 
-      expect(panel1.getView().style.display).not.toBe 'none'
-      expect(panel2.getView().style.display).toBe 'none'
+      expect(viewRegistry.getView(panel1).style.display).not.toBe 'none'
+      expect(viewRegistry.getView(panel2).style.display).toBe 'none'
+
+    it "adds the 'modal' class to panels", ->
+      panel1 = new Panel({item: new TestPanelContainerItem()})
+      container.addPanel(panel1)
+
+      expect(viewRegistry.getView(panel1)).toHaveClass 'modal'
+
+      # legacy selector support
+      expect(viewRegistry.getView(panel1)).not.toHaveClass 'tool-panel'
+      expect(viewRegistry.getView(panel1)).toHaveClass 'overlay'
+      expect(viewRegistry.getView(panel1)).toHaveClass 'from-top'

spec/panel-container-spec.coffee

@@ -1,16 +1,14 @@
-ViewRegistry = require '../src/view-registry'
 Panel = require '../src/panel'
 PanelContainer = require '../src/panel-container'
 
 describe "PanelContainer", ->
-  [container, viewRegistry] = []
+  [container] = []
 
   class TestPanelItem
     constructior: ->
 
   beforeEach ->
-    viewRegistry = new ViewRegistry
-    container = new PanelContainer({viewRegistry})
+    container = new PanelContainer
 
   describe "::addPanel(panel)", ->
     it 'emits an onDidAddPanel event with the index the panel was inserted at', ->
@@ -46,7 +44,7 @@ describe "PanelContainer", ->
       [initialPanel] = []
       beforeEach ->
         # 'left' logic is the same as 'top'
-        container = new PanelContainer({viewRegistry, location: 'left'})
+        container = new PanelContainer({location: 'left'})
         initialPanel = new Panel(item: new TestPanelItem())
         container.addPanel(initialPanel)
 
@@ -75,7 +73,7 @@ describe "PanelContainer", ->
       [initialPanel] = []
       beforeEach ->
         # 'bottom' logic is the same as 'right'
-        container = new PanelContainer({viewRegistry, location: 'right'})
+        container = new PanelContainer({location: 'right'})
         initialPanel = new Panel(item: new TestPanelItem())
         container.addPanel(initialPanel)
 

spec/panel-element-spec.coffee

@@ -1,6 +1,6 @@
-ViewRegistry = require '../src/view-registry'
 Panel = require '../src/panel'
 PanelElement = require '../src/panel-element'
+ViewRegistry = require '../src/view-registry'
 
 describe "PanelElement", ->
   [jasmineContent, element, panel, viewRegistry] = []
@@ -11,23 +11,30 @@ describe "PanelElement", ->
   class TestPanelItemElement extends HTMLElement
     createdCallback: ->
       @classList.add('test-root')
-    setModel: (@model) ->
+    initialize: ({@model}) ->
   TestPanelItemElement = document.registerElement 'atom-test-item-element', prototype: TestPanelItemElement.prototype
 
   beforeEach ->
     jasmineContent = document.body.querySelector('#jasmine-content')
 
-    viewRegistry = new ViewRegistry
-    viewRegistry.addViewProvider
+    atom.views.addViewProvider
       modelConstructor: Panel
       viewConstructor: PanelElement
-    viewRegistry.addViewProvider
+    atom.views.addViewProvider
       modelConstructor: TestPanelItem
       viewConstructor: TestPanelItemElement
 
+    viewRegistry = new ViewRegistry(atom.views)
+
+  it "renders a view for the panel's item", ->
+    panel = new Panel({item: new TestPanelItem})
+    element = atom.views.createView(panel, {viewRegistry})
+    jasmineContent.appendChild(element)
+    expect(element.firstChild).toBe viewRegistry.getView(panel.getItem())
+
   it 'removes the element when the panel is destroyed', ->
-    panel = new Panel({viewRegistry, item: new TestPanelItem})
-    element = panel.getView()
+    panel = new Panel({item: new TestPanelItem})
+    element = atom.views.createView(panel, {viewRegistry})
     jasmineContent.appendChild(element)
 
     expect(element.parentNode).toBe jasmineContent
@@ -36,15 +43,15 @@ describe "PanelElement", ->
 
   describe "changing panel visibility", ->
     it 'initially renders panel created with visibile: false', ->
-      panel = new Panel({viewRegistry, visible: false, item: new TestPanelItem})
-      element = panel.getView()
+      panel = new Panel({visible: false, item: new TestPanelItem})
+      element = atom.views.createView(panel, {viewRegistry})
       jasmineContent.appendChild(element)
 
       expect(element.style.display).toBe 'none'
 
     it 'hides and shows the panel element when Panel::hide() and Panel::show() are called', ->
-      panel = new Panel({viewRegistry, item: new TestPanelItem})
-      element = panel.getView()
+      panel = new Panel({item: new TestPanelItem})
+      element = atom.views.createView(panel, {viewRegistry})
       jasmineContent.appendChild(element)
 
       expect(element.style.display).not.toBe 'none'
@@ -57,8 +64,8 @@ describe "PanelElement", ->
 
   describe "when a class name is specified", ->
     it 'initially renders panel created with visibile: false', ->
-      panel = new Panel({viewRegistry, className: 'some classes', item: new TestPanelItem})
-      element = panel.getView()
+      panel = new Panel({className: 'some classes', item: new TestPanelItem})
+      element = atom.views.createView(panel, {viewRegistry})
       jasmineContent.appendChild(element)
 
       expect(element).toHaveClass 'some'

spec/project-spec.coffee

@@ -170,30 +170,30 @@ describe "Project", ->
         absolutePath = fs.absolute(__dirname)
         expect(atom.project.resolve(absolutePath)).toBe absolutePath
 
-  describe ".setPath(path)", ->
+  describe ".setPaths(path)", ->
     describe "when path is a file", ->
       it "sets its path to the files parent directory and updates the root directory", ->
         atom.project.setPaths([require.resolve('./fixtures/dir/a')])
         expect(atom.project.getPaths()[0]).toEqual path.dirname(require.resolve('./fixtures/dir/a'))
-        expect(atom.project.getRootDirectory().path).toEqual path.dirname(require.resolve('./fixtures/dir/a'))
+        expect(atom.project.getDirectories()[0].path).toEqual path.dirname(require.resolve('./fixtures/dir/a'))
 
     describe "when path is a directory", ->
       it "sets its path to the directory and updates the root directory", ->
         directory = fs.absolute(path.join(__dirname, 'fixtures', 'dir', 'a-dir'))
         atom.project.setPaths([directory])
         expect(atom.project.getPaths()[0]).toEqual directory
-        expect(atom.project.getRootDirectory().path).toEqual directory
+        expect(atom.project.getDirectories()[0].path).toEqual directory
 
     describe "when path is null", ->
       it "sets its path and root directory to null", ->
         atom.project.setPaths([])
         expect(atom.project.getPaths()[0]?).toBeFalsy()
-        expect(atom.project.getRootDirectory()?).toBeFalsy()
+        expect(atom.project.getDirectories()[0]?).toBeFalsy()
 
     it "normalizes the path to remove consecutive slashes, ., and .. segments", ->
       atom.project.setPaths(["#{require.resolve('./fixtures/dir/a')}#{path.sep}b#{path.sep}#{path.sep}.."])
       expect(atom.project.getPaths()[0]).toEqual path.dirname(require.resolve('./fixtures/dir/a'))
-      expect(atom.project.getRootDirectory().path).toEqual path.dirname(require.resolve('./fixtures/dir/a'))
+      expect(atom.project.getDirectories()[0].path).toEqual path.dirname(require.resolve('./fixtures/dir/a'))
 
   describe ".replace()", ->
     [filePath, commentFilePath, sampleContent, sampleCommentContent] = []

spec/select-list-view-spec.coffee

@@ -1,5 +1,5 @@
 SelectListView = require '../src/select-list-view'
-{$, $$} = require 'atom'
+{$, $$} = require '../src/space-pen-extensions'
 
 describe "SelectListView", ->
   [selectList, items, list, filterEditorView] = []

spec/space-pen-extensions-spec.coffee

@@ -1,4 +1,4 @@
-{View, $, $$} = require 'atom'
+{View, $, $$} = require '../src/space-pen-extensions'
 
 describe "SpacePen extensions", ->
   class TestView extends View

spec/spec-helper.coffee

@@ -9,12 +9,17 @@ _ = require 'underscore-plus'
 fs = require 'fs-plus'
 Grim = require 'grim'
 KeymapManager = require '../src/keymap-extensions'
-{$, WorkspaceView, Workspace} = require 'atom'
+
+# FIXME: Remove jquery from this
+{$} = require '../src/space-pen-extensions'
+
 Config = require '../src/config'
 {Point} = require 'text-buffer'
 Project = require '../src/project'
+Workspace = require '../src/workspace'
 TextEditor = require '../src/text-editor'
 TextEditorView = require '../src/text-editor-view'
+TextEditorElement = require '../src/text-editor-element'
 TokenizedBuffer = require '../src/tokenized-buffer'
 TextEditorComponent = require '../src/text-editor-component'
 pathwatcher = require 'pathwatcher'
@@ -76,13 +81,15 @@ beforeEach ->
   atom.commands.restoreSnapshot(commandsToRestore)
   atom.styles.restoreSnapshot(styleElementsToRestore)
 
+  atom.workspaceViewParentSelector = '#jasmine-content'
+
   window.resetTimeouts()
   atom.packages.packageStates = {}
 
   serializedWindowState = null
 
   spyOn(atom, 'saveSync')
-  atom.syntax.clearGrammarOverrides()
+  atom.grammars.clearGrammarOverrides()
 
   spy = spyOn(atom.packages, 'resolvePackagePath').andCallFake (packageName) ->
     if specPackageName and packageName is specPackageName
@@ -111,8 +118,7 @@ beforeEach ->
   config.save.reset()
 
   # make editor display updates synchronous
-  spyOn(TextEditorView.prototype, 'requestDisplayUpdate').andCallFake -> @updateDisplay()
-  TextEditorComponent.performSyncUpdates = true
+  TextEditorElement::setUpdatedSynchronously(true)
 
   spyOn(atom, "setRepresentedFilename")
   spyOn(window, "setTimeout").andCallFake window.fakeSetTimeout
@@ -135,8 +141,9 @@ afterEach ->
   atom.menu.template = []
   atom.contextMenu.clear()
 
-  atom.workspaceView?.remove?()
-  atom.workspaceView = null
+  atom.workspace?.destroy()
+  atom.workspace = null
+  atom.__workspaceView = null
   delete atom.state.workspace
 
   atom.project?.destroy()
@@ -150,7 +157,7 @@ afterEach ->
 
   jasmine.unspy(atom, 'saveSync')
   ensureNoPathSubscriptions()
-  atom.syntax.clearObservers()
+  atom.grammars.clearObservers()
   waits(0) # yield to ui thread to make screen update more frequently
 
 ensureNoPathSubscriptions = ->
@@ -191,6 +198,17 @@ jasmine.unspy = (object, methodName) ->
   throw new Error("Not a spy") unless object[methodName].hasOwnProperty('originalValue')
   object[methodName] = object[methodName].originalValue
 
+jasmine.attachToDOM = (element) ->
+  jasmineContent = document.querySelector('#jasmine-content')
+  jasmineContent.appendChild(element) unless jasmineContent.contains(element)
+
+deprecationsSnapshot = null
+jasmine.snapshotDeprecations = ->
+  deprecationsSnapshot = Grim.getDeprecations() # suppress deprecations!!
+
+jasmine.restoreDeprecationsSnapshot = ->
+  Grim.grimDeprecations = deprecationsSnapshot
+
 addCustomMatchers = (spec) ->
   spec.addMatchers
     toBeInstanceOf: (expected) ->
@@ -286,6 +304,9 @@ window.waitsForPromise = (args...) ->
         jasmine.getEnv().currentSpec.fail("Expected promise to be resolved, but it was rejected with #{jasmine.pp(error)}")
         moveOn()
 
+window.waitsForAnimationFrame = ->
+  waitsFor "next animation frame", (done) -> requestAnimationFrame(done)
+
 window.resetTimeouts = ->
   window.now = 0
   window.timeoutCount = 0

spec/syntax-spec.coffee

@@ -23,10 +23,10 @@ describe "the `syntax` global", ->
   describe "serialization", ->
     it "remembers grammar overrides by path", ->
       filePath = '/foo/bar/file.js'
-      expect(atom.syntax.selectGrammar(filePath).name).not.toBe 'Ruby'
-      atom.syntax.setGrammarOverrideForPath(filePath, 'source.ruby')
-      syntax2 = atom.deserializers.deserialize(atom.syntax.serialize())
-      syntax2.addGrammar(grammar) for grammar in atom.syntax.grammars when grammar isnt atom.syntax.nullGrammar
+      expect(atom.grammars.selectGrammar(filePath).name).not.toBe 'Ruby'
+      atom.grammars.setGrammarOverrideForPath(filePath, 'source.ruby')
+      syntax2 = atom.deserializers.deserialize(atom.grammars.serialize())
+      syntax2.addGrammar(grammar) for grammar in atom.grammars.grammars when grammar isnt atom.grammars.nullGrammar
       expect(syntax2.selectGrammar(filePath).name).toBe 'Ruby'
 
   describe ".selectGrammar(filePath)", ->
@@ -35,15 +35,15 @@ describe "the `syntax` global", ->
         atom.packages.activatePackage('language-git')
 
       runs ->
-        expect(atom.syntax.selectGrammar("file.js").name).toBe "JavaScript" # based on extension (.js)
-        expect(atom.syntax.selectGrammar(path.join(temp.dir, '.git', 'config')).name).toBe "Git Config" # based on end of the path (.git/config)
-        expect(atom.syntax.selectGrammar("Rakefile").name).toBe "Ruby" # based on the file's basename (Rakefile)
-        expect(atom.syntax.selectGrammar("curb").name).toBe "Null Grammar"
-        expect(atom.syntax.selectGrammar("/hu.git/config").name).toBe "Null Grammar"
+        expect(atom.grammars.selectGrammar("file.js").name).toBe "JavaScript" # based on extension (.js)
+        expect(atom.grammars.selectGrammar(path.join(temp.dir, '.git', 'config')).name).toBe "Git Config" # based on end of the path (.git/config)
+        expect(atom.grammars.selectGrammar("Rakefile").name).toBe "Ruby" # based on the file's basename (Rakefile)
+        expect(atom.grammars.selectGrammar("curb").name).toBe "Null Grammar"
+        expect(atom.grammars.selectGrammar("/hu.git/config").name).toBe "Null Grammar"
 
     it "uses the filePath's shebang line if the grammar cannot be determined by the extension or basename", ->
       filePath = require.resolve("./fixtures/shebang")
-      expect(atom.syntax.selectGrammar(filePath).name).toBe "Ruby"
+      expect(atom.grammars.selectGrammar(filePath).name).toBe "Ruby"
 
     it "uses the number of newlines in the first line regex to determine the number of lines to test against", ->
       waitsForPromise ->
@@ -51,28 +51,28 @@ describe "the `syntax` global", ->
 
       runs ->
         fileContent = "first-line\n<html>"
-        expect(atom.syntax.selectGrammar("dummy.coffee", fileContent).name).toBe "CoffeeScript"
+        expect(atom.grammars.selectGrammar("dummy.coffee", fileContent).name).toBe "CoffeeScript"
 
         fileContent = '<?xml version="1.0" encoding="UTF-8"?>'
-        expect(atom.syntax.selectGrammar("grammar.tmLanguage", fileContent).name).toBe "Null Grammar"
+        expect(atom.grammars.selectGrammar("grammar.tmLanguage", fileContent).name).toBe "Null Grammar"
 
         fileContent += '\n<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">'
-        expect(atom.syntax.selectGrammar("grammar.tmLanguage", fileContent).name).toBe "Property List (XML)"
+        expect(atom.grammars.selectGrammar("grammar.tmLanguage", fileContent).name).toBe "Property List (XML)"
 
     it "doesn't read the file when the file contents are specified", ->
       filePath = require.resolve("./fixtures/shebang")
       filePathContents = fs.readFileSync(filePath, 'utf8')
       spyOn(fs, 'read').andCallThrough()
-      expect(atom.syntax.selectGrammar(filePath, filePathContents).name).toBe "Ruby"
+      expect(atom.grammars.selectGrammar(filePath, filePathContents).name).toBe "Ruby"
       expect(fs.read).not.toHaveBeenCalled()
 
     it "allows the default grammar to be overridden for a path", ->
       filePath = '/foo/bar/file.js'
-      expect(atom.syntax.selectGrammar(filePath).name).not.toBe 'Ruby'
-      atom.syntax.setGrammarOverrideForPath(filePath, 'source.ruby')
-      expect(atom.syntax.selectGrammar(filePath).name).toBe 'Ruby'
-      atom.syntax.clearGrammarOverrideForPath(filePath)
-      expect(atom.syntax.selectGrammar(filePath).name).not.toBe 'Ruby'
+      expect(atom.grammars.selectGrammar(filePath).name).not.toBe 'Ruby'
+      atom.grammars.setGrammarOverrideForPath(filePath, 'source.ruby')
+      expect(atom.grammars.selectGrammar(filePath).name).toBe 'Ruby'
+      atom.grammars.clearGrammarOverrideForPath(filePath)
+      expect(atom.grammars.selectGrammar(filePath).name).not.toBe 'Ruby'
 
     describe "when multiple grammars have matching fileTypes", ->
       it "selects the grammar with the longest fileType match", ->
@@ -82,8 +82,8 @@ describe "the `syntax` global", ->
           scopeName: 'source1'
           fileTypes: ['test']
         )
-        grammar1 = atom.syntax.loadGrammarSync(grammarPath1)
-        expect(atom.syntax.selectGrammar('more.test', '')).toBe grammar1
+        grammar1 = atom.grammars.loadGrammarSync(grammarPath1)
+        expect(atom.grammars.selectGrammar('more.test', '')).toBe grammar1
 
         grammarPath2 = temp.path(suffix: '.json')
         fs.writeFileSync grammarPath2, JSON.stringify(
@@ -91,44 +91,17 @@ describe "the `syntax` global", ->
           scopeName: 'source2'
           fileTypes: ['test', 'more.test']
         )
-        grammar2 = atom.syntax.loadGrammarSync(grammarPath2)
-        expect(atom.syntax.selectGrammar('more.test', '')).toBe grammar2
+        grammar2 = atom.grammars.loadGrammarSync(grammarPath2)
+        expect(atom.grammars.selectGrammar('more.test', '')).toBe grammar2
 
     describe "when there is no file path", ->
       it "does not throw an exception (regression)", ->
-        expect(-> atom.syntax.selectGrammar(null, '#!/usr/bin/ruby')).not.toThrow()
-        expect(-> atom.syntax.selectGrammar(null, '')).not.toThrow()
-        expect(-> atom.syntax.selectGrammar(null, null)).not.toThrow()
+        expect(-> atom.grammars.selectGrammar(null, '#!/usr/bin/ruby')).not.toThrow()
+        expect(-> atom.grammars.selectGrammar(null, '')).not.toThrow()
+        expect(-> atom.grammars.selectGrammar(null, null)).not.toThrow()
 
   describe ".removeGrammar(grammar)", ->
     it "removes the grammar, so it won't be returned by selectGrammar", ->
-      grammar = atom.syntax.selectGrammar('foo.js')
-      atom.syntax.removeGrammar(grammar)
-      expect(atom.syntax.selectGrammar('foo.js').name).not.toBe grammar.name
-
-  describe ".getProperty(scopeDescriptor)", ->
-    it "returns the property with the most specific scope selector", ->
-      atom.syntax.addProperties(".source.coffee .string.quoted.double.coffee", foo: bar: baz: 42)
-      atom.syntax.addProperties(".source .string.quoted.double", foo: bar: baz: 22)
-      atom.syntax.addProperties(".source", foo: bar: baz: 11)
-
-      expect(atom.syntax.getProperty([".source.coffee", ".string.quoted.double.coffee"], "foo.bar.baz")).toBe 42
-      expect(atom.syntax.getProperty([".source.js", ".string.quoted.double.js"], "foo.bar.baz")).toBe 22
-      expect(atom.syntax.getProperty([".source.js", ".variable.assignment.js"], "foo.bar.baz")).toBe 11
-      expect(atom.syntax.getProperty([".text"], "foo.bar.baz")).toBeUndefined()
-
-    it "favors the most recently added properties in the event of a specificity tie", ->
-      atom.syntax.addProperties(".source.coffee .string.quoted.single", foo: bar: baz: 42)
-      atom.syntax.addProperties(".source.coffee .string.quoted.double", foo: bar: baz: 22)
-
-      expect(atom.syntax.getProperty([".source.coffee", ".string.quoted.single"], "foo.bar.baz")).toBe 42
-      expect(atom.syntax.getProperty([".source.coffee", ".string.quoted.single.double"], "foo.bar.baz")).toBe 22
-
-  describe ".removeProperties(name)", ->
-    it "allows properties to be removed by name", ->
-      atom.syntax.addProperties("a", ".source.coffee .string.quoted.double.coffee", foo: bar: baz: 42)
-      atom.syntax.addProperties("b", ".source .string.quoted.double", foo: bar: baz: 22)
-
-      atom.syntax.removeProperties("b")
-      expect(atom.syntax.getProperty([".source.js", ".string.quoted.double.js"], "foo.bar.baz")).toBeUndefined()
-      expect(atom.syntax.getProperty([".source.coffee", ".string.quoted.double.coffee"], "foo.bar.baz")).toBe 42
+      grammar = atom.grammars.selectGrammar('foo.js')
+      atom.grammars.removeGrammar(grammar)
+      expect(atom.grammars.selectGrammar('foo.js').name).not.toBe grammar.name

spec/text-editor-component-spec.coffee

@@ -3,10 +3,12 @@ _ = require 'underscore-plus'
 
 TextEditorView = require '../src/text-editor-view'
 TextEditorComponent = require '../src/text-editor-component'
+ViewRegistry = require '../src/view-registry'
+
 nbsp = String.fromCharCode(160)
 
 describe "TextEditorComponent", ->
-  [contentNode, editor, wrapperView, wrapperNode, component, componentNode, verticalScrollbarNode, horizontalScrollbarNode] = []
+  [viewRegistry, contentNode, editor, wrapperView, wrapperNode, component, componentNode, verticalScrollbarNode, horizontalScrollbarNode] = []
   [lineHeightInPixels, charWidth, nextAnimationFrame, noAnimationFrame, lineOverdrawMargin] = []
 
   beforeEach ->
@@ -31,19 +33,22 @@ describe "TextEditorComponent", ->
       atom.project.open('sample.js').then (o) -> editor = o
 
     runs ->
+      viewRegistry = new ViewRegistry(atom.views)
+
       contentNode = document.querySelector('#jasmine-content')
       contentNode.style.width = '1000px'
 
-      wrapperView = new TextEditorView(editor, {lineOverdrawMargin})
-      wrapperView.attachToDom()
-      wrapperNode = wrapperView.element
+      wrapperNode = atom.views.createView(editor, {viewRegistry, lineOverdrawMargin})
+      wrapperNode.setUpdatedSynchronously(false)
+      jasmine.attachToDOM(wrapperNode)
 
-      {component} = wrapperView
-      component.performSyncUpdates = false
+      {component} = wrapperNode
       component.setFontFamily('monospace')
       component.setLineHeight(1.3)
       component.setFontSize(20)
 
+      wrapperView = wrapperNode.__spacePenView
+
       lineHeightInPixels = editor.getLineHeightInPixels()
       charWidth = editor.getDefaultCharWidth()
       componentNode = component.getDOMNode()
@@ -302,7 +307,7 @@ describe "TextEditorComponent", ->
 
       it "interleaves invisible line-ending characters with indent guides on empty lines", ->
         component.setShowIndentGuide(true)
-        editor.setTextInBufferRange([[10, 0], [11, 0]], "\r\n", false)
+        editor.setTextInBufferRange([[10, 0], [11, 0]], "\r\n", normalizeLineEndings: false)
         nextAnimationFrame()
         expect(component.lineNodeForScreenRow(10).innerHTML).toBe '<span class="indent-guide"><span class="invisible-character">C</span><span class="invisible-character">E</span></span>'
 
@@ -1247,7 +1252,7 @@ describe "TextEditorComponent", ->
         expect(overlay.style.top).toBe position.top + editor.getLineHeightInPixels() + 'px'
 
     describe "when the marker is not empty", ->
-      it "renders at the head of the marker", ->
+      it "renders at the head of the marker by default", ->
         marker = editor.displayBuffer.markBufferRange([[2, 5], [2, 10]], invalidate: 'never')
         decoration = editor.decorateMarker(marker, {type: 'overlay', item})
         nextAnimationFrame()
@@ -1269,6 +1274,17 @@ describe "TextEditorComponent", ->
         expect(overlay.style.left).toBe position.left + 'px'
         expect(overlay.style.top).toBe position.top + editor.getLineHeightInPixels() + 'px'
 
+      it "renders at the tail of the marker when the 'position' option is 'tail'", ->
+        marker = editor.displayBuffer.markBufferRange([[2, 5], [2, 10]], invalidate: 'never')
+        decoration = editor.decorateMarker(marker, {type: 'overlay', position: 'tail', item})
+        nextAnimationFrame()
+
+        position = editor.pixelPositionForBufferPosition([2, 5])
+
+        overlay = component.getTopmostDOMNode().querySelector('atom-overlay')
+        expect(overlay.style.left).toBe position.left + 'px'
+        expect(overlay.style.top).toBe position.top + editor.getLineHeightInPixels() + 'px'
+
     describe "positioning the overlay when near the edge of the editor", ->
       [itemWidth, itemHeight] = []
       beforeEach ->
@@ -2532,7 +2548,7 @@ describe "TextEditorComponent", ->
   describe "grammar data attributes", ->
     it "adds and updates the grammar data attribute based on the current grammar", ->
       expect(wrapperNode.dataset.grammar).toBe 'source js'
-      editor.setGrammar(atom.syntax.nullGrammar)
+      editor.setGrammar(atom.grammars.nullGrammar)
       expect(wrapperNode.dataset.grammar).toBe 'text plain null-grammar'
 
   describe "encoding data attributes", ->

spec/text-editor-element-spec.coffee

@@ -98,3 +98,23 @@ describe "TextEditorElement", ->
       verticalScrollbarNode = element.querySelector(".vertical-scrollbar")
       scrollbarWidth = verticalScrollbarNode.offsetWidth - verticalScrollbarNode.clientWidth
       expect(scrollbarWidth).toEqual(8)
+
+  describe "::setUpdatedSynchronously", ->
+    it "controls whether the text editor is updated synchronously", ->
+      element = new TextEditorElement
+      jasmine.attachToDOM(element)
+
+      element.setUpdatedSynchronously(false)
+      expect(element.isUpdatedSynchronously()).toBe false
+
+      element.getModel().setText("hello")
+      expect(element.shadowRoot.textContent).not.toContain "hello"
+
+      waitsForAnimationFrame()
+
+      runs ->
+        expect(element.shadowRoot.textContent).toContain "hello"
+
+        element.setUpdatedSynchronously(true)
+        element.getModel().setText("goodbye")
+        expect(element.shadowRoot.textContent).toContain "goodbye"

spec/text-editor-spec.coffee

@@ -616,7 +616,7 @@ describe "TextEditor", ->
         describe "when invisible characters are enabled with hard tabs", ->
           it "moves to the first character of the current line without being confused by the invisible characters", ->
             atom.config.set('editor.showInvisibles', true)
-            buffer.setTextInRange([[1, 0], [1, Infinity]], '\t\t\ta', false)
+            buffer.setTextInRange([[1, 0], [1, Infinity]], '\t\t\ta', normalizeLineEndings: false)
 
             editor.setCursorScreenPosition [1,7]
             editor.moveToFirstCharacterOfLine()
@@ -2607,69 +2607,44 @@ describe "TextEditor", ->
               atom.clipboard.write(" z();")
               editor.setCursorBufferPosition([1, Infinity])
               editor.pasteText()
-
-              console.log JSON.stringify(editor.lineTextForBufferRow(1))
               expect(editor.lineTextForBufferRow(1)).toBe("    y(); z();")
 
         describe "when `autoIndentOnPaste` is false", ->
           beforeEach ->
             atom.config.set('editor.autoIndentOnPaste', false)
 
-          describe "when the inserted text contains no newlines", ->
-            it "does not adjust the indentation level of the text", ->
-              editor.setCursorBufferPosition([5, 2])
-              editor.insertText("foo", indentBasis: 5)
-              expect(editor.lineTextForBufferRow(5)).toBe "  foo    current = items.shift();"
+          describe "when the cursor is indented further than the original copied text", ->
+            it "increases the indentation of the copied lines to match", ->
+              editor.setSelectedBufferRange([[1, 2], [3, 0]])
+              editor.copySelectedText()
 
-            it "does not adjust the whitespace if there are preceding characters", ->
-              copyText(" foo")
-              editor.setCursorBufferPosition([5, 30])
+              editor.setCursorBufferPosition([5, 6])
               editor.pasteText()
 
-              expect(editor.lineTextForBufferRow(5)).toBe "      current = items.shift(); foo"
+              expect(editor.lineTextForBufferRow(5)).toBe "      var sort = function(items) {"
+              expect(editor.lineTextForBufferRow(6)).toBe "        if (items.length <= 1) return items;"
 
-          describe "when the inserted text contains newlines", ->
-            describe "when the cursor is preceded only by whitespace characters", ->
-              it "normalizes indented lines to each cursor's current indentation level", ->
-                editor.setSelectedBufferRanges([
-                  [[1,2], [3,0]],
-                  [[4,4], [6,0]]
-                ])
-                editor.copySelectedText()
-                expect(atom.clipboard.read()).toEqual """
-                  var sort = function(items) {
-                      if (items.length <= 1) return items;
+          describe "when the cursor is indented less far than the original copied text", ->
+            it "decreases the indentation of the copied lines to match", ->
+              editor.setSelectedBufferRange([[6, 6], [8, 0]])
+              editor.copySelectedText()
 
-                  while(items.length > 0) {
-                        current = items.shift();
+              editor.setCursorBufferPosition([1, 2])
+              editor.pasteText()
 
-                """
+              expect(editor.lineTextForBufferRow(1)).toBe "  current < pivot ? left.push(current) : right.push(current);"
+              expect(editor.lineTextForBufferRow(2)).toBe "}"
 
-                editor.setCursorBufferPosition([0,0])
-                editor.insertNewlineAbove()
-                editor.setSelectedBufferRanges([
-                  [[0,0], [0,0]],
-                  [[1,0], [1,0]]
-                ])
-                editor.pasteText()
+          describe "when the first copied line has leading whitespace", ->
+            it "preserves the line's leading whitespace", ->
+              editor.setSelectedBufferRange([[4, 0], [6, 0]])
+              editor.copySelectedText()
 
-                expect(editor.lineTextForBufferRow(0)).toBe "var sort = function(items) {"
-                console.log JSON.stringify(editor.lineTextForBufferRow(1))
-                expect(editor.lineTextForBufferRow(1)).toBe "  if (items.length <= 1) return items;"
-                expect(editor.lineTextForBufferRow(2)).toBe ""
-                expect(editor.lineTextForBufferRow(3)).toBe "while(items.length > 0) {"
-                expect(editor.lineTextForBufferRow(4)).toBe "  current = items.shift();"
+              editor.setCursorBufferPosition([0, 0])
+              editor.pasteText()
 
-            describe "when the cursor is preceded by non-whitespace characters", ->
-              it "normalizes the indentation level of all lines based on the level of the existing first line", ->
-                copyText("    while (true) {\n      foo();\n    }\n", {startColumn: 0})
-                editor.setCursorBufferPosition([1, Infinity])
-                editor.pasteText()
-
-                expect(editor.lineTextForBufferRow(1)).toBe "  var sort = function(items) {while (true) {"
-                expect(editor.lineTextForBufferRow(2)).toBe "    foo();"
-                expect(editor.lineTextForBufferRow(3)).toBe "  }"
-                expect(editor.lineTextForBufferRow(4)).toBe ""
+              expect(editor.lineTextForBufferRow(0)).toBe "    while(items.length > 0) {"
+              expect(editor.lineTextForBufferRow(1)).toBe "      current = items.shift();"
 
         describe 'when the clipboard has many selections', ->
           beforeEach ->
@@ -3039,18 +3014,16 @@ describe "TextEditor", ->
         expect(editor.isFoldedAtBufferRow(1)).toBeFalsy()
         expect(editor.isFoldedAtBufferRow(2)).toBeTruthy()
 
-    describe "begin/commitTransaction()", ->
+    describe "::transact", ->
       it "restores the selection when the transaction is undone/redone", ->
         buffer.setText('1234')
         editor.setSelectedBufferRange([[0, 1], [0, 3]])
-        editor.beginTransaction()
 
-        editor.delete()
-        editor.moveToEndOfLine()
-        editor.insertText('5')
-        expect(buffer.getText()).toBe '145'
-
-        editor.commitTransaction()
+        editor.transact ->
+          editor.delete()
+          editor.moveToEndOfLine()
+          editor.insertText('5')
+          expect(buffer.getText()).toBe '145'
 
         editor.undo()
         expect(buffer.getText()).toBe '1234'
@@ -3357,17 +3330,17 @@ describe "TextEditor", ->
     it "switches to the better-matched grammar and re-tokenizes the buffer", ->
       editor.destroy()
 
-      jsGrammar = atom.syntax.selectGrammar('a.js')
-      atom.syntax.removeGrammar(jsGrammar)
+      jsGrammar = atom.grammars.selectGrammar('a.js')
+      atom.grammars.removeGrammar(jsGrammar)
 
       waitsForPromise ->
         atom.workspace.open('sample.js', autoIndent: false).then (o) -> editor = o
 
       runs ->
-        expect(editor.getGrammar()).toBe atom.syntax.nullGrammar
+        expect(editor.getGrammar()).toBe atom.grammars.nullGrammar
         expect(editor.tokenizedLineForScreenRow(0).tokens.length).toBe 1
 
-        atom.syntax.addGrammar(jsGrammar)
+        atom.grammars.addGrammar(jsGrammar)
         expect(editor.getGrammar()).toBe jsGrammar
         expect(editor.tokenizedLineForScreenRow(0).tokens.length).toBeGreaterThan 1
 
@@ -3787,7 +3760,7 @@ describe "TextEditor", ->
 
     it "updates the grammar based on grammar overrides", ->
       expect(editor.getGrammar().name).toBe 'JavaScript'
-      atom.syntax.setGrammarOverrideForPath(editor.getPath(), 'source.coffee')
+      atom.grammars.setGrammarOverrideForPath(editor.getPath(), 'source.coffee')
       editor.reloadGrammar()
       expect(editor.getGrammar().name).toBe 'CoffeeScript'
 
@@ -3805,7 +3778,7 @@ describe "TextEditor", ->
         atom.packages.activatePackage('language-hyperlink')
 
       runs ->
-        grammar = atom.syntax.selectGrammar("text.js")
+        grammar = atom.grammars.selectGrammar("text.js")
         {tokens} = grammar.tokenizeLine("var i; // http://github.com")
 
         expect(tokens[0].value).toBe "var"

spec/theme-manager-spec.coffee

@@ -1,6 +1,6 @@
 path = require 'path'
 
-{$, $$, WorkspaceView} = require 'atom'
+{$, $$} = require '../src/space-pen-extensions'
 fs = require 'fs-plus'
 temp = require 'temp'
 
@@ -20,8 +20,12 @@ describe "ThemeManager", ->
 
   describe "theme getters and setters", ->
     beforeEach ->
+      jasmine.snapshotDeprecations()
       atom.packages.loadPackages()
 
+    afterEach ->
+      jasmine.restoreDeprecationsSnapshot()
+
     it 'getLoadedThemes get all the loaded themes', ->
       themes = themeManager.getLoadedThemes()
       expect(themes.length).toBeGreaterThan(2)
@@ -70,7 +74,7 @@ describe "ThemeManager", ->
   describe "when the core.themes config value changes", ->
     it "add/removes stylesheets to reflect the new config value", ->
       themeManager.onDidReloadAll reloadHandler = jasmine.createSpy()
-      spyOn(themeManager, 'getUserStylesheetPath').andCallFake -> null
+      spyOn(atom.styles, 'getUserStyleSheetPath').andCallFake -> null
 
       waitsForPromise ->
         themeManager.activateThemes()
@@ -130,15 +134,24 @@ describe "ThemeManager", ->
       expect(-> atom.packages.activatePackage('a-theme-that-will-not-be-found')).toThrow()
 
   describe "::requireStylesheet(path)", ->
+    beforeEach ->
+      jasmine.snapshotDeprecations()
+
+    afterEach ->
+      jasmine.restoreDeprecationsSnapshot()
+
     it "synchronously loads css at the given path and installs a style tag for it in the head", ->
+      atom.styles.onDidAddStyleElement styleElementAddedHandler = jasmine.createSpy("styleElementAddedHandler")
       themeManager.onDidChangeStylesheets stylesheetsChangedHandler = jasmine.createSpy("stylesheetsChangedHandler")
       themeManager.onDidAddStylesheet stylesheetAddedHandler = jasmine.createSpy("stylesheetAddedHandler")
+
       cssPath = atom.project.resolve('css.css')
       lengthBefore = $('head style').length
 
       themeManager.requireStylesheet(cssPath)
       expect($('head style').length).toBe lengthBefore + 1
 
+      expect(styleElementAddedHandler).toHaveBeenCalled()
       expect(stylesheetAddedHandler).toHaveBeenCalled()
       expect(stylesheetsChangedHandler).toHaveBeenCalled()
 
@@ -148,8 +161,10 @@ describe "ThemeManager", ->
       expect(element[0].sheet).toBe stylesheetAddedHandler.argsForCall[0][0]
 
       # doesn't append twice
+      styleElementAddedHandler.reset()
       themeManager.requireStylesheet(cssPath)
       expect($('head style').length).toBe lengthBefore + 1
+      expect(styleElementAddedHandler).not.toHaveBeenCalled()
 
       $('head style[id*="css.css"]').remove()
 
@@ -192,6 +207,7 @@ describe "ThemeManager", ->
       disposable = themeManager.requireStylesheet(cssPath)
       expect($(document.body).css('font-weight')).toBe("bold")
 
+      atom.styles.onDidRemoveStyleElement styleElementRemovedHandler = jasmine.createSpy("styleElementRemovedHandler")
       themeManager.onDidRemoveStylesheet stylesheetRemovedHandler = jasmine.createSpy("stylesheetRemovedHandler")
       themeManager.onDidChangeStylesheets stylesheetsChangedHandler = jasmine.createSpy("stylesheetsChangedHandler")
 
@@ -199,6 +215,7 @@ describe "ThemeManager", ->
 
       expect($(document.body).css('font-weight')).not.toBe("bold")
 
+      expect(styleElementRemovedHandler).toHaveBeenCalled()
       expect(stylesheetRemovedHandler).toHaveBeenCalled()
       stylesheet = stylesheetRemovedHandler.argsForCall[0][0]
       expect(stylesheet instanceof CSSStyleSheet).toBe true
@@ -207,14 +224,20 @@ describe "ThemeManager", ->
       expect(stylesheetsChangedHandler).toHaveBeenCalled()
 
   describe "base stylesheet loading", ->
+    workspaceElement = null
     beforeEach ->
-      atom.workspaceView = atom.views.getView(atom.workspace).__spacePenView
-      atom.workspaceView.append $('<atom-text-editor>')
-      atom.workspaceView.attachToDom()
+      jasmine.snapshotDeprecations()
+
+      workspaceElement = atom.views.createView(atom.workspace)
+      jasmine.attachToDOM(workspaceElement)
+      workspaceElement.appendChild document.createElement('atom-text-editor')
 
       waitsForPromise ->
         themeManager.activateThemes()
 
+    beforeEach ->
+      jasmine.restoreDeprecationsSnapshot()
+
     it "loads the correct values from the theme's ui-variables file", ->
       themeManager.onDidReloadAll reloadHandler = jasmine.createSpy()
       atom.config.set('core.themes', ['theme-with-ui-variables', 'theme-with-syntax-variables'])
@@ -224,7 +247,7 @@ describe "ThemeManager", ->
 
       runs ->
         # an override loaded in the base css
-        expect(atom.workspaceView.css("background-color")).toBe "rgb(0, 0, 255)"
+        expect(getComputedStyle(workspaceElement)["background-color"]).toBe "rgb(0, 0, 255)"
 
         # from within the theme itself
         expect($("atom-text-editor").css("padding-top")).toBe "150px"
@@ -241,14 +264,14 @@ describe "ThemeManager", ->
 
         runs ->
           # an override loaded in the base css
-          expect(atom.workspaceView.css("background-color")).toBe "rgb(0, 0, 255)"
+          expect(getComputedStyle(workspaceElement)["background-color"]).toBe "rgb(0, 0, 255)"
 
           # from within the theme itself
           expect($("atom-text-editor").css("background-color")).toBe "rgb(0, 152, 255)"
 
     describe "theme classes on the workspace", ->
       it 'adds theme-* classes to the workspace for each active theme', ->
-        expect(atom.workspaceView).toHaveClass 'theme-atom-dark-ui'
+        expect(workspaceElement).toHaveClass 'theme-atom-dark-ui'
 
         themeManager.onDidReloadAll reloadHandler = jasmine.createSpy()
         atom.config.set('core.themes', ['theme-with-ui-variables', 'theme-with-syntax-variables'])
@@ -258,22 +281,32 @@ describe "ThemeManager", ->
 
         runs ->
           # `theme-` twice as it prefixes the name with `theme-`
-          expect(atom.workspaceView).toHaveClass 'theme-theme-with-ui-variables'
-          expect(atom.workspaceView).toHaveClass 'theme-theme-with-syntax-variables'
-          expect(atom.workspaceView).not.toHaveClass 'theme-atom-dark-ui'
-          expect(atom.workspaceView).not.toHaveClass 'theme-atom-dark-syntax'
+          expect(workspaceElement).toHaveClass 'theme-theme-with-ui-variables'
+          expect(workspaceElement).toHaveClass 'theme-theme-with-syntax-variables'
+          expect(workspaceElement).not.toHaveClass 'theme-atom-dark-ui'
+          expect(workspaceElement).not.toHaveClass 'theme-atom-dark-syntax'
 
   describe "when the user stylesheet changes", ->
+    beforeEach ->
+      jasmine.snapshotDeprecations()
+
+    afterEach ->
+      jasmine.restoreDeprecationsSnapshot()
+
     it "reloads it", ->
+      [styleElementAddedHandler, styleElementRemovedHandler] = []
       [stylesheetRemovedHandler, stylesheetAddedHandler, stylesheetsChangedHandler] = []
       userStylesheetPath = path.join(temp.mkdirSync("atom"), 'styles.less')
       fs.writeFileSync(userStylesheetPath, 'body {border-style: dotted !important;}')
-      spyOn(themeManager, 'getUserStylesheetPath').andReturn userStylesheetPath
+      spyOn(atom.styles, 'getUserStyleSheetPath').andReturn userStylesheetPath
 
       waitsForPromise ->
         themeManager.activateThemes()
 
       runs ->
+        atom.styles.onDidRemoveStyleElement styleElementRemovedHandler = jasmine.createSpy("styleElementRemovedHandler")
+        atom.styles.onDidAddStyleElement styleElementAddedHandler = jasmine.createSpy("styleElementAddedHandler")
+
         themeManager.onDidChangeStylesheets stylesheetsChangedHandler = jasmine.createSpy("stylesheetsChangedHandler")
         themeManager.onDidRemoveStylesheet stylesheetRemovedHandler = jasmine.createSpy("stylesheetRemovedHandler")
         themeManager.onDidAddStylesheet stylesheetAddedHandler = jasmine.createSpy("stylesheetAddedHandler")
@@ -288,14 +321,19 @@ describe "ThemeManager", ->
       runs ->
         expect($(document.body).css('border-style')).toBe 'dashed'
 
+        expect(styleElementRemovedHandler).toHaveBeenCalled()
+        expect(styleElementRemovedHandler.argsForCall[0][0].textContent).toContain 'dotted'
         expect(stylesheetRemovedHandler).toHaveBeenCalled()
         expect(stylesheetRemovedHandler.argsForCall[0][0].cssRules[0].style.border).toBe 'dotted'
 
+        expect(styleElementAddedHandler).toHaveBeenCalled()
+        expect(styleElementAddedHandler.argsForCall[0][0].textContent).toContain 'dashed'
         expect(stylesheetAddedHandler).toHaveBeenCalled()
         expect(stylesheetAddedHandler.argsForCall[0][0].cssRules[0].style.border).toBe 'dashed'
 
         expect(stylesheetsChangedHandler).toHaveBeenCalled()
 
+        styleElementRemovedHandler.reset()
         stylesheetRemovedHandler.reset()
         stylesheetsChangedHandler.reset()
         fs.removeSync(userStylesheetPath)
@@ -304,6 +342,8 @@ describe "ThemeManager", ->
         themeManager.loadUserStylesheet.callCount is 2
 
       runs ->
+        expect(styleElementRemovedHandler).toHaveBeenCalled()
+        expect(styleElementRemovedHandler.argsForCall[0][0].textContent).toContain 'dashed'
         expect(stylesheetRemovedHandler).toHaveBeenCalled()
         expect(stylesheetRemovedHandler.argsForCall[0][0].cssRules[0].style.border).toBe 'dashed'
         expect($(document.body).css('border-style')).toBe 'none'

spec/tokenized-buffer-spec.coffee

@@ -522,7 +522,7 @@ describe "TokenizedBuffer", ->
         buffer = atom.project.bufferForPathSync()
         buffer.setText "<div class='name'><%= User.find(2).full_name %></div>"
         tokenizedBuffer = new TokenizedBuffer({buffer})
-        tokenizedBuffer.setGrammar(atom.syntax.selectGrammar('test.erb'))
+        tokenizedBuffer.setGrammar(atom.grammars.selectGrammar('test.erb'))
         fullyTokenize(tokenizedBuffer)
 
         {tokens} = tokenizedBuffer.tokenizedLineForRow(0)

spec/tooltip-manager-spec.coffee

@@ -0,0 +1,72 @@
+TooltipManager = require '../src/tooltip-manager'
+{$} = require '../src/space-pen-extensions'
+
+describe "TooltipManager", ->
+  [manager, element] = []
+
+  beforeEach ->
+    manager = new TooltipManager
+    element = document.createElement('div')
+    element.classList.add('foo')
+    jasmine.attachToDOM(element)
+
+  hover = (element, fn) ->
+    $(element).trigger 'mouseenter'
+    advanceClock(manager.defaults.delay.show)
+    fn()
+    $(element).trigger 'mouseleave'
+    advanceClock(manager.defaults.delay.hide)
+
+  describe "::add(target, options)", ->
+    describe "when the target is an element", ->
+      it "creates a tooltip based on the given options when hovering over the target element", ->
+        manager.add element, title: "Title"
+        hover element, ->
+          expect(document.body.querySelector(".tooltip")).toHaveText("Title")
+
+    describe "when a keyBindingCommand is specified", ->
+      describe "when a title is specified", ->
+        it "appends the key binding corresponding to the command to the title", ->
+          atom.keymaps.add 'test',
+            '.foo': 'ctrl-x ctrl-y': 'test-command'
+            '.bar': 'ctrl-x ctrl-z': 'test-command'
+
+          manager.add element, title: "Title", keyBindingCommand: 'test-command'
+
+          hover element, ->
+            tooltipElement = document.body.querySelector(".tooltip")
+            expect(tooltipElement).toHaveText "Title ⌃X ⌃Y"
+
+      describe "when no title is specified", ->
+        it "shows the key binding corresponding to the command alone", ->
+          atom.keymaps.add 'test', '.foo': 'ctrl-x ctrl-y': 'test-command'
+
+          manager.add element, keyBindingCommand: 'test-command'
+
+          hover element, ->
+            tooltipElement = document.body.querySelector(".tooltip")
+            expect(tooltipElement).toHaveText "⌃X ⌃Y"
+
+      describe "when a keyBindingTarget is specified", ->
+        it "looks up the key binding relative to the target", ->
+          atom.keymaps.add 'test',
+            '.bar': 'ctrl-x ctrl-z': 'test-command'
+            '.foo': 'ctrl-x ctrl-y': 'test-command'
+
+          manager.add element, keyBindingCommand: 'test-command', keyBindingTarget: element
+
+          hover element, ->
+            tooltipElement = document.body.querySelector(".tooltip")
+            expect(tooltipElement).toHaveText "⌃X ⌃Y"
+
+    describe "when .dispose() is called on the returned disposable", ->
+      it "no longer displays the tooltip on hover", ->
+        disposable = manager.add element, title: "Title"
+
+        hover element, ->
+          expect(document.body.querySelector(".tooltip")).toHaveText("Title")
+
+        disposable.dispose()
+
+        hover element, ->
+          expect(document.body.querySelector(".tooltip")).toBeNull()

spec/view-factory-spec.coffee

@@ -1,17 +1,17 @@
-ViewRegistry = require '../src/view-registry'
+ViewFactory = require '../src/view-factory'
 {View} = require '../src/space-pen-extensions'
 
-describe "ViewRegistry", ->
-  registry = null
+describe "ViewFactory", ->
+  factory = null
 
   beforeEach ->
-    registry = new ViewRegistry
+    factory = new ViewFactory
 
-  describe "::getView(object)", ->
+  describe "::createView(object, params)", ->
     describe "when passed a DOM node", ->
       it "returns the given DOM node", ->
         node = document.createElement('div')
-        expect(registry.getView(node)).toBe node
+        expect(factory.createView(node)).toBe node
 
     describe "when passed a SpacePen view", ->
       it "returns the root node of the view with a __spacePenView property pointing at the SpacePen view", ->
@@ -19,56 +19,65 @@ describe "ViewRegistry", ->
           @content: -> @div "Hello"
 
         view = new TestView
-        node = registry.getView(view)
+        node = factory.createView(view)
         expect(node.textContent).toBe "Hello"
         expect(node.__spacePenView).toBe view
 
     describe "when passed a model object", ->
       describe "when a view provider is registered matching the object's constructor", ->
         describe "when the provider has a viewConstructor property", ->
-          it "constructs a view element and assigns the model on it", ->
+          it "constructs a view element and calls initialize on it with the creation params", ->
             class TestModel
 
             class TestModelSubclass extends TestModel
 
             class TestView
-              setModel: (@model) ->
+              initialize: (@params) ->
 
             model = new TestModel
 
-            registry.addViewProvider
+            factory.addViewProvider
               modelConstructor: TestModel
               viewConstructor: TestView
 
-            view = registry.getView(model)
+            view = factory.createView(model, a: 1)
             expect(view instanceof TestView).toBe true
-            expect(view.model).toBe model
+            expect(view.params.a).toBe 1
+            expect(view.params.model).toBe model
+            expect(view.params.viewFactory).toBe factory
 
             subclassModel = new TestModelSubclass
-            view2 = registry.getView(subclassModel)
+            view2 = factory.createView(subclassModel)
             expect(view2 instanceof TestView).toBe true
-            expect(view2.model).toBe subclassModel
+            expect(view2.params.model).toBe subclassModel
 
         describe "when the provider has a createView method", ->
-          it "constructs a view element by calling the createView method with the model", ->
+          it "constructs a view element by calling the createView method with the creation params", ->
             class TestModel
             class TestView
-              setModel: (@model) ->
+              initialize: (@params) ->
 
-            registry.addViewProvider
+            factory.addViewProvider
               modelConstructor: TestModel
-              createView: (model) ->
+              createView: (params) ->
                 view = new TestView
-                view.setModel(model)
+                view.initialize(params)
                 view
 
             model = new TestModel
-            view = registry.getView(model)
+            view = factory.createView(model, a: 1)
             expect(view instanceof TestView).toBe true
-            expect(view.model).toBe model
+            expect(view.params.a).toBe 1
+            expect(view.params.model).toBe model
 
       describe "when no view provider is registered for the object's constructor", ->
-        describe "when the object has a .getViewClass() method", ->
+        describe "when the object has a .createViewClass() method", ->
+          beforeEach ->
+            jasmine.snapshotDeprecations()
+
+          afterEach ->
+            jasmine.restoreDeprecationsSnapshot()
+
           it "builds an instance of the view class with the model, then returns its root node with a __spacePenView property pointing at the view", ->
             class TestView extends View
               @content: (model) -> @div model.name
@@ -79,29 +88,26 @@ describe "ViewRegistry", ->
               getViewClass: -> TestView
 
             model = new TestModel("hello")
-            node = registry.getView(model)
+            node = factory.createView(model)
 
             expect(node.textContent).toBe "hello"
             view = node.__spacePenView
             expect(view instanceof TestView).toBe true
             expect(view.model).toBe model
 
-            # returns the same DOM node for repeated calls
-            expect(registry.getView(model)).toBe node
-
-        describe "when the object has no .getViewClass() method", ->
+        describe "when the object has no .createViewClass() method", ->
           it "throws an exception", ->
-            expect(-> registry.getView(new Object)).toThrow()
+            expect(-> factory.createView(new Object)).toThrow()
 
   describe "::addViewProvider(providerSpec)", ->
     it "returns a disposable that can be used to remove the provider", ->
       class TestModel
       class TestView
-        setModel: (@model) ->
-      disposable = registry.addViewProvider
+        initialize: ->
+      disposable = factory.addViewProvider
         modelConstructor: TestModel
         viewConstructor: TestView
 
-      expect(registry.getView(new TestModel) instanceof TestView).toBe true
+      expect(factory.createView(new TestModel) instanceof TestView).toBe true
       disposable.dispose()
-      expect(-> registry.getView(new TestModel)).toThrow()
+      expect(-> factory.createView(new TestModel)).toThrow()

spec/window-spec.coffee

@@ -1,4 +1,4 @@
-{$, $$} = require 'atom'
+{$, $$} = require '../src/space-pen-extensions'
 path = require 'path'
 TextEditor = require '../src/text-editor'
 WindowEventHandler = require '../src/window-event-handler'
@@ -95,13 +95,13 @@ describe "Window", ->
   describe ".unloadEditorWindow()", ->
     it "saves the serialized state of the window so it can be deserialized after reload", ->
       workspaceState = atom.workspace.serialize()
-      syntaxState = atom.syntax.serialize()
+      syntaxState = atom.grammars.serialize()
       projectState = atom.project.serialize()
 
       atom.unloadEditorWindow()
 
       expect(atom.state.workspace).toEqual workspaceState
-      expect(atom.state.syntax).toEqual syntaxState
+      expect(atom.state.grammars).toEqual syntaxState
       expect(atom.state.project).toEqual projectState
       expect(atom.saveSync).toHaveBeenCalled()
 
@@ -112,9 +112,9 @@ describe "Window", ->
 
       runs ->
         buffer = atom.workspace.getActivePaneItem().buffer
-        pane = atom.workspaceView.getActivePaneView()
-        pane.splitRight(pane.copyActiveItem())
-        expect(atom.workspaceView.find('atom-text-editor').length).toBe 2
+        pane = atom.workspace.getActivePane()
+        pane.splitRight(copyActiveItem: true)
+        expect(atom.workspace.getTextEditors().length).toBe 2
 
         atom.removeEditorWindow()
 
@@ -259,24 +259,23 @@ describe "Window", ->
 
       describe "when the opened path exists", ->
         it "sets the project path to the opened path", ->
-          $(window).trigger('window:open-path', [{pathToOpen: __filename}])
-
+          atom.getCurrentWindow().send 'message', 'open-path', pathToOpen: __filename
           expect(atom.project.getPaths()[0]).toBe __dirname
 
       describe "when the opened path does not exist but its parent directory does", ->
         it "sets the project path to the opened path's parent directory", ->
-          $(window).trigger('window:open-path', [{pathToOpen: path.join(__dirname, 'this-path-does-not-exist.txt')}])
-
+          pathToOpen = path.join(__dirname, 'this-path-does-not-exist.txt')
+          atom.getCurrentWindow().send 'message', 'open-path', {pathToOpen}
           expect(atom.project.getPaths()[0]).toBe __dirname
 
     describe "when the opened path is a file", ->
       it "opens it in the workspace", ->
-        $(window).trigger('window:open-path', [{pathToOpen: __filename}])
+        atom.getCurrentWindow().send 'message', 'open-path', pathToOpen: __filename
 
         expect(atom.workspace.open.mostRecentCall.args[0]).toBe __filename
 
     describe "when the opened path is a directory", ->
       it "does not open it in the workspace", ->
-        $(window).trigger('window:open-path', [{pathToOpen: __dirname}])
+        atom.getCurrentWindow().send 'message', 'open-path', pathToOpen: __dirname
 
         expect(atom.workspace.open.callCount).toBe 0

spec/workspace-spec.coffee

@@ -375,7 +375,7 @@ describe "Workspace", ->
   describe "document.title", ->
     describe "when the project has no path", ->
       it "sets the title to 'untitled'", ->
-        atom.project.setPath(undefined)
+        atom.project.setPaths([])
         expect(document.title).toBe 'untitled - Atom'
 
     describe "when the project has a path", ->
@@ -458,46 +458,59 @@ describe "Workspace", ->
       expect(atom.setDocumentEdited).toHaveBeenCalledWith(false)
 
   describe "adding panels", ->
-    class TestPanel
-      constructior: ->
+    class TestItem
 
     describe '::addLeftPanel(model)', ->
       it 'adds a panel to the correct panel container', ->
+        expect(atom.workspace.getLeftPanels().length).toBe(0)
         atom.workspace.panelContainers.left.onDidAddPanel addPanelSpy = jasmine.createSpy()
-        panel = atom.workspace.addLeftPanel(item: new TestPanel())
+
+        model = new TestItem
+        panel = atom.workspace.addLeftPanel(item: model)
 
         expect(panel).toBeDefined()
         expect(addPanelSpy).toHaveBeenCalledWith({panel, index: 0})
 
     describe '::addRightPanel(model)', ->
       it 'adds a panel to the correct panel container', ->
+        expect(atom.workspace.getRightPanels().length).toBe(0)
         atom.workspace.panelContainers.right.onDidAddPanel addPanelSpy = jasmine.createSpy()
-        panel = atom.workspace.addRightPanel(item: new TestPanel())
+
+        model = new TestItem
+        panel = atom.workspace.addRightPanel(item: model)
 
         expect(panel).toBeDefined()
         expect(addPanelSpy).toHaveBeenCalledWith({panel, index: 0})
 
     describe '::addTopPanel(model)', ->
       it 'adds a panel to the correct panel container', ->
+        expect(atom.workspace.getTopPanels().length).toBe(0)
         atom.workspace.panelContainers.top.onDidAddPanel addPanelSpy = jasmine.createSpy()
-        panel = atom.workspace.addTopPanel(item: new TestPanel())
+
+        model = new TestItem
+        panel = atom.workspace.addTopPanel(item: model)
 
         expect(panel).toBeDefined()
         expect(addPanelSpy).toHaveBeenCalledWith({panel, index: 0})
 
     describe '::addBottomPanel(model)', ->
       it 'adds a panel to the correct panel container', ->
+        expect(atom.workspace.getBottomPanels().length).toBe(0)
         atom.workspace.panelContainers.bottom.onDidAddPanel addPanelSpy = jasmine.createSpy()
-        panel = atom.workspace.addBottomPanel(item: new TestPanel())
+
+        model = new TestItem
+        panel = atom.workspace.addBottomPanel(item: model)
 
         expect(panel).toBeDefined()
         expect(addPanelSpy).toHaveBeenCalledWith({panel, index: 0})
 
     describe '::addModalPanel(model)', ->
       it 'adds a panel to the correct panel container', ->
+        expect(atom.workspace.getModalPanels().length).toBe(0)
         atom.workspace.panelContainers.modal.onDidAddPanel addPanelSpy = jasmine.createSpy()
-        panel = atom.workspace.addModalPanel(item: new TestPanel())
+
+        model = new TestItem
+        panel = atom.workspace.addModalPanel(item: model)
 
         expect(panel).toBeDefined()
         expect(addPanelSpy).toHaveBeenCalledWith({panel, index: 0})
-        expect(panel.getClassName()).toBe 'overlay from-top' # the default

spec/workspace-view-spec.coffee

@@ -1,4 +1,4 @@
-{$, $$, WorkspaceView, View} = require 'atom'
+{$, $$, View} = require '../src/space-pen-extensions'
 Q = require 'q'
 path = require 'path'
 temp = require 'temp'
@@ -10,16 +10,21 @@ describe "WorkspaceView", ->
   pathToOpen = null
 
   beforeEach ->
+    jasmine.snapshotDeprecations()
+
     atom.project.setPaths([atom.project.resolve('dir')])
     pathToOpen = atom.project.resolve('a')
     atom.workspace = new Workspace
-    atom.workspaceView = atom.views.getView(atom.workspace).__spacePenView
+    atom.workspaceView = atom.views.createView(atom.workspace).__spacePenView
     atom.workspaceView.enableKeymap()
     atom.workspaceView.focus()
 
     waitsForPromise ->
       atom.workspace.open(pathToOpen)
 
+  afterEach ->
+    jasmine.restoreDeprecationsSnapshot()
+
   describe "@deserialize()", ->
     viewState = null
 
@@ -29,7 +34,7 @@ describe "WorkspaceView", ->
       atom.workspaceView.remove()
       atom.project = atom.deserializers.deserialize(projectState)
       atom.workspace = Workspace.deserialize(workspaceState)
-      atom.workspaceView = atom.views.getView(atom.workspace).__spacePenView
+      atom.workspaceView = atom.views.createView(atom.workspace).__spacePenView
       atom.workspaceView.attachToDom()
 
     describe "when the serialized WorkspaceView has an unsaved buffer", ->
@@ -274,7 +279,7 @@ describe "WorkspaceView", ->
   describe 'panel containers', ->
     workspaceElement = null
     beforeEach ->
-      workspaceElement = atom.views.getView(atom.workspace)
+      workspaceElement = atom.views.createView(atom.workspace)
 
     it 'inserts panel container elements in the correct places in the DOM', ->
       leftContainer = workspaceElement.querySelector('atom-panel-container.left')

src/atom.coffee

@@ -5,6 +5,7 @@ path = require 'path'
 remote = require 'remote'
 screen = require 'screen'
 shell = require 'shell'
+{deprecate} = require 'grim'
 
 _ = require 'underscore-plus'
 {deprecate} = require 'grim'
@@ -33,6 +34,23 @@ class Atom extends Model
     startTime = Date.now()
     atom = @deserialize(@loadState(mode)) ? new this({mode, @version})
     atom.deserializeTimings.atom = Date.now() -  startTime
+
+    workspaceViewDeprecationMessage = """
+      atom.workspaceView is no longer available.
+      In most cases you will not need the view. See the Workspace docs for
+      alternatives: https://atom.io/docs/api/latest/Workspace.
+      If you do need the view, please use `document.querySelector('atom-workspace')`,
+      which returns an HTMLElement.
+    """
+
+    Object.defineProperty atom, 'workspaceView',
+      get: ->
+        deprecate(workspaceViewDeprecationMessage)
+        atom.__workspaceView
+      set: (newValue) ->
+        deprecate(workspaceViewDeprecationMessage)
+        atom.__workspaceView = newValue
+
     atom
 
   # Deserializes the Atom environment from a state object
@@ -125,11 +143,17 @@ class Atom extends Model
   # Public: A {KeymapManager} instance
   keymaps: null
 
+  # Public: A {TooltipManager} instance
+  tooltips: null
+
+  # Experimental: A {NotificationManager} instance
+  notifications: null
+
   # Public: A {Project} instance
   project: null
 
-  # Public: A {Syntax} instance
-  syntax: null
+  # Public: A {GrammarRegistry} instance
+  grammars: null
 
   # Public: A {PackageManager} instance
   packages: null
@@ -137,18 +161,18 @@ class Atom extends Model
   # Public: A {ThemeManager} instance
   themes: null
 
+  # Public: A {StyleManager} instance
+  styles: null
+
   # Public: A {DeserializerManager} instance
   deserializers: null
 
-  # Public: A {ViewRegistry} instance
+  # Public: A {ViewFactory} instance
   views: null
 
   # Public: A {Workspace} instance
   workspace: null
 
-  # Public: A {WorkspaceView} instance
-  workspaceView: null
-
   ###
   Section: Construction and Destruction
   ###
@@ -196,11 +220,13 @@ class Atom extends Model
 
     Config = require './config'
     KeymapManager = require './keymap-extensions'
-    ViewRegistry = require './view-registry'
+    ViewFactory = require './view-factory'
     CommandRegistry = require './command-registry'
+    TooltipManager = require './tooltip-manager'
+    NotificationManager = require './notification-manager'
     PackageManager = require './package-manager'
     Clipboard = require './clipboard'
-    Syntax = require './syntax'
+    GrammarRegistry = require './grammar-registry'
     ThemeManager = require './theme-manager'
     StyleManager = require './style-manager'
     ContextMenuManager = require './context-menu-manager'
@@ -223,8 +249,11 @@ class Atom extends Model
     @config = new Config({configDirPath, resourcePath})
     @keymaps = new KeymapManager({configDirPath, resourcePath})
     @keymap = @keymaps # Deprecated
+    @keymaps.subscribeToFileReadFailure()
+    @tooltips = new TooltipManager
+    @notifications = new NotificationManager
     @commands = new CommandRegistry
-    @views = new ViewRegistry
+    @views = new ViewFactory
     @packages = new PackageManager({devMode, configDirPath, resourcePath, safeMode})
     @styles = new StyleManager
     document.head.appendChild(new StylesElement)
@@ -233,7 +262,11 @@ class Atom extends Model
     @menu = new MenuManager({resourcePath})
     @clipboard = new Clipboard()
 
-    @syntax = @deserializers.deserialize(@state.syntax) ? new Syntax()
+    @grammars = @deserializers.deserialize(@state.grammars ? @state.syntax) ? new GrammarRegistry()
+
+    Object.defineProperty this, 'syntax', get: ->
+      deprecate "The atom.syntax global is deprecated. Use atom.grammars instead."
+      @grammars
 
     @subscribe @packages.onDidActivateAll => @watchThemes()
 
@@ -544,9 +577,9 @@ class Atom extends Model
     @displayWindow({maximize})
 
   unloadEditorWindow: ->
-    return if not @project and not @workspaceView
+    return if not @project
 
-    @state.syntax = @syntax.serialize()
+    @state.grammars = @grammars.serialize()
     @state.project = @project.serialize()
     @state.workspace = @workspace.serialize()
     @packages.deactivatePackages()
@@ -555,10 +588,10 @@ class Atom extends Model
     @windowState = null
 
   removeEditorWindow: ->
-    return if not @project and not @workspaceView
+    return if not @project
 
-    @workspaceView?.remove()
-    @workspaceView = null
+    @workspace?.destroy()
+    @workspace = null
     @project?.destroy()
     @project = null
 
@@ -571,7 +604,7 @@ class Atom extends Model
   # Essential: Visually and audibly trigger a beep.
   beep: ->
     shell.beep() if @config.get('core.audioBeep')
-    @workspaceView.trigger 'beep'
+    @__workspaceView.trigger 'beep'
     @emitter.emit 'did-beep'
 
   # Essential: A flexible way to open a dialog akin to an alert dialog.
@@ -647,11 +680,13 @@ class Atom extends Model
 
     startTime = Date.now()
     @workspace = Workspace.deserialize(@state.workspace) ? new Workspace
-    @workspaceView = @views.getView(@workspace).__spacePenView
+
+    workspaceElement = @views.createView(@workspace)
+    @__workspaceView = workspaceElement.__spacePenView
     @deserializeTimings.workspace = Date.now() - startTime
 
-    @keymaps.defaultTarget = @workspaceView[0]
-    $(@workspaceViewParentSelector).append(@workspaceView)
+    @keymaps.defaultTarget = workspaceElement
+    document.querySelector(@workspaceViewParentSelector).appendChild(workspaceElement)
 
   deserializePackageStates: ->
     @packages.packageStates = @state.packageStates ? {}
@@ -748,6 +783,12 @@ class Atom extends Model
       else
         window[key] = value
 
+  onUpdateAvailable: (callback) ->
+    @emitter.on 'update-available', callback
+
+  updateAvailable: (details) ->
+    @emitter.emit 'update-available', details
+
   # Deprecated: Callers should be converted to use atom.deserializers
   registerRepresentationClass: ->
     deprecate("Callers should be converted to use atom.deserializers")

src/browser/atom-window.coffee

@@ -58,7 +58,7 @@ class AtomWindow
     @browserWindow.loadUrl @getUrl(loadSettings)
     @browserWindow.focusOnWebView() if @isSpec
 
-    @openPath(pathToOpen, initialLine, initialColumn)
+    @openPath(pathToOpen, initialLine, initialColumn) unless @isSpecWindow()
 
   getUrl: (loadSettingsObj) ->
     # Ignore the windowState when passing loadSettings via URL, since it could
@@ -143,10 +143,13 @@ class AtomWindow
   openPath: (pathToOpen, initialLine, initialColumn) ->
     if @loaded
       @focus()
-      @sendCommand('window:open-path', {pathToOpen, initialLine, initialColumn})
+      @sendMessage 'open-path', {pathToOpen, initialLine, initialColumn}
     else
       @browserWindow.once 'window:loaded', => @openPath(pathToOpen, initialLine, initialColumn)
 
+  sendMessage: (message, detail) ->
+    @browserWindow.webContents.send 'message', message, detail
+
   sendCommand: (command, args...) ->
     if @isSpecWindow()
       unless global.atomApplication.sendCommandToFirstResponder(command)
@@ -154,7 +157,6 @@ class AtomWindow
           when 'window:reload' then @reload()
           when 'window:toggle-dev-tools' then @toggleDevTools()
           when 'window:close' then @close()
-          when 'window:update-available' then @sendCommandToBrowserWindow(command, args...) # For spec testing
     else if @isWebViewFocused()
       @sendCommandToBrowserWindow(command, args...)
     else

src/browser/auto-update-manager.coffee

@@ -15,7 +15,12 @@ class AutoUpdateManager
 
   constructor: (@version) ->
     @state = IdleState
-    @feedUrl = "https://atom.io/api/updates?version=#{@version}"
+    if process.platform is 'win32'
+      # Squirrel for Windows can't handle query params
+      # https://github.com/Squirrel/Squirrel.Windows/issues/132
+      @feedUrl = 'https://atom.io/api/updates'
+    else
+      @feedUrl = "https://atom.io/api/updates?version=#{@version}"
 
     process.nextTick => @setupAutoUpdater()
 
@@ -51,7 +56,7 @@ class AutoUpdateManager
   emitUpdateAvailableEvent: (windows...) ->
     return unless @releaseVersion? and @releaseNotes
     for atomWindow in windows
-      atomWindow.sendCommand('window:update-available', [@releaseVersion, @releaseNotes])
+      atomWindow.sendMessage('update-available', {@releaseVersion, @releaseNotes})
 
   setState: (state) ->
     return if @state is state

src/browser/context-menu.coffee

@@ -8,7 +8,7 @@ class ContextMenu
     menu.popup(@atomWindow.browserWindow)
 
   # It's necessary to build the event handlers in this process, otherwise
-  # closures are drug across processes and failed to be garbage collected
+  # closures are dragged across processes and failed to be garbage collected
   # appropriately.
   createClickHandlers: (template) ->
     for item in template

src/browser/main.coffee

@@ -13,6 +13,16 @@ process.on 'uncaughtException', (error={}) ->
   nslog(error.message) if error.message?
   nslog(error.stack) if error.stack?
 
+# Patch fs.statSyncNoException/fs.lstatSyncNoException to fail for non-strings
+# https://github.com/atom/atom-shell/issues/843
+{lstatSyncNoException, statSyncNoException} = fs
+fs.statSyncNoException = (pathToStat) ->
+  return false unless pathToStat and typeof pathToStat is 'string'
+  statSyncNoException(pathToStat)
+fs.lstatSyncNoException = (pathToStat) ->
+  return false unless pathToStat and typeof pathToStat is 'string'
+  lstatSyncNoException(pathToStat)
+
 start = ->
   if process.platform is 'win32'
     SquirrelUpdate = require './squirrel-update'

src/config-schema.coffee

@@ -119,9 +119,6 @@ module.exports =
       autoIndentOnPaste:
         type: 'boolean'
         default: true
-      normalizeIndentOnPaste:
-        type: 'boolean'
-        default: true
       nonWordCharacters:
         type: 'string'
         default: "/\\()\"':,.;<>~!@#$%^&*|+=[]{}`?-"

src/config.coffee

@@ -526,6 +526,9 @@ class Config
 
   # Extended: Restore the global setting at `keyPath` to its default value.
   #
+  # * `scopeSelector` (optional) {String}. eg. '.source.ruby'
+  #   See [the scopes docs](https://atom.io/docs/latest/advanced/scopes-and-scope-descriptors)
+  #   for more information.
   # * `keyPath` The {String} name of the key.
   #
   # Returns the new value.
@@ -721,21 +724,26 @@ class Config
       @configFileHasErrors = false
     catch error
       @configFileHasErrors = true
-      console.error "Failed to load user config '#{@configFilePath}'", error.message
-      console.error error.stack
+      @notifyFailure('Failed to load config.cson', error)
 
   observeUserConfig: ->
     try
       @watchSubscription ?= pathWatcher.watch @configFilePath, (eventType) =>
         @loadUserConfig() if eventType is 'change' and @watchSubscription?
     catch error
-      console.error "Failed to watch user config '#{@configFilePath}'", error.message
-      console.error error.stack
+      @notifyFailure('Failed to watch user config', error)
 
   unobserveUserConfig: ->
     @watchSubscription?.close()
     @watchSubscription = null
 
+  notifyFailure: (errorMessage, error) ->
+    message = "#{errorMessage}"
+    detail = error.stack
+    atom.notifications.addError(message, {detail, closable: true})
+    console.error message
+    console.error detail
+
   save: ->
     allSettings = global: @settings
     allSettings = _.extend allSettings, @scopedSettingsStore.propertiesForSource('user-config')

src/display-buffer.coffee

@@ -889,6 +889,9 @@ class DisplayBuffer extends Model
       allDecorations = allDecorations.concat(decorations) if decorations?
     allDecorations
 
+  getOverlayDecorations: ->
+    @getDecorations().filter (decoration) -> decoration.isType('overlay')
+
   decorationsForScreenRowRange: (startScreenRow, endScreenRow) ->
     decorationsByMarkerId = {}
     for marker in @findMarkers(intersectsScreenRowRange: [startScreenRow, endScreenRow])

src/git-repository.coffee

@@ -1,9 +1,8 @@
 {basename, join} = require 'path'
 
 _ = require 'underscore-plus'
-{Subscriber} = require 'emissary'
 EmitterMixin = require('emissary').Emitter
-{Emitter} = require 'event-kit'
+{Emitter, Disposable, CompositeDisposable} = require 'event-kit'
 fs = require 'fs-plus'
 GitUtils = require 'git-utils'
 {deprecate} = require 'grim'
@@ -45,7 +44,6 @@ Task = require './task'
 module.exports =
 class GitRepository
   EmitterMixin.includeInto(this)
-  Subscriber.includeInto(this)
 
   @exists: (path) ->
     if git = @open(path)
@@ -75,6 +73,8 @@ class GitRepository
 
   constructor: (path, options={}) ->
     @emitter = new Emitter
+    @subscriptions = new CompositeDisposable
+
     @repo = GitUtils.open(path)
     unless @repo?
       throw new Error("No Git repository found searching path: #{path}")
@@ -88,13 +88,15 @@ class GitRepository
 
     refreshOnWindowFocus ?= true
     if refreshOnWindowFocus
-      {$} = require './space-pen-extensions'
-      @subscribe $(window), 'focus', =>
+      onWindowFocus = =>
         @refreshIndex()
         @refreshStatus()
 
+      window.addEventListener 'focus', onWindowFocus
+      @subscriptions.add new Disposable(-> window.removeEventListener 'focus', onWindowFocus)
+
     if @project?
-      @subscribe @project.eachBuffer (buffer) => @subscribeToBuffer(buffer)
+      @subscriptions.add @project.eachBuffer (buffer) => @subscribeToBuffer(buffer)
 
   # Public: Destroy this {GitRepository} object.
   #
@@ -109,7 +111,7 @@ class GitRepository
       @repo.release()
       @repo = null
 
-    @unsubscribe()
+    @subscriptions.dispose()
 
   ###
   Section: Event Subscription
@@ -403,10 +405,13 @@ class GitRepository
       if path = buffer.getPath()
         @getPathStatus(path)
 
-    @subscribe buffer.onDidSave(getBufferPathStatus)
-    @subscribe buffer.onDidReload(getBufferPathStatus)
-    @subscribe buffer.onDidChangePath(getBufferPathStatus)
-    @subscribe buffer.onDidDestroy => @unsubscribe(buffer)
+    bufferSubscriptions = new CompositeDisposable
+    bufferSubscriptions.add buffer.onDidSave(getBufferPathStatus)
+    bufferSubscriptions.add buffer.onDidReload(getBufferPathStatus)
+    bufferSubscriptions.add buffer.onDidChangePath(getBufferPathStatus)
+    bufferSubscriptions.add buffer.onDidDestroy =>
+      bufferSubscriptions.dispose()
+      @subscriptions.remove(bufferSubscriptions)
 
   # Subscribes to editor view event.
   checkoutHeadForEditor: (editor) ->

src/grammar-registry.coffee

@@ -2,7 +2,8 @@ _ = require 'underscore-plus'
 {deprecate} = require 'grim'
 {specificity} = require 'clear-cut'
 {Subscriber} = require 'emissary'
-{GrammarRegistry, ScopeSelector} = require 'first-mate'
+FirstMate = require 'first-mate'
+{ScopeSelector} = FirstMate
 ScopedPropertyStore = require 'scoped-property-store'
 PropertyAccessors = require 'property-accessors'
 
@@ -11,20 +12,22 @@ Token = require './token'
 
 # Extended: Syntax class holding the grammars used for tokenizing.
 #
-# An instance of this class is always available as the `atom.syntax` global.
+# An instance of this class is always available as the `atom.grammars` global.
 #
 # The Syntax class also contains properties for things such as the
 # language-specific comment regexes. See {::getProperty} for more details.
 module.exports =
-class Syntax extends GrammarRegistry
+class GrammarRegistry extends FirstMate.GrammarRegistry
   PropertyAccessors.includeInto(this)
   Subscriber.includeInto(this)
-  atom.deserializers.add(this)
 
   @deserialize: ({grammarOverridesByPath}) ->
-    syntax = new Syntax()
-    syntax.grammarOverridesByPath = grammarOverridesByPath
-    syntax
+    grammarRegistry = new GrammarRegistry()
+    grammarRegistry.grammarOverridesByPath = grammarOverridesByPath
+    grammarRegistry
+
+  atom.deserializers.add(this)
+  atom.deserializers.add(name: 'Syntax', deserialize: @deserialize) # Support old serialization
 
   constructor: ->
     super(maxTokensPerLine: 100)
@@ -34,6 +37,17 @@ class Syntax extends GrammarRegistry
 
   createToken: (value, scopes) -> new Token({value, scopes})
 
+  # Extended: Select a grammar for the given file path and file contents.
+  #
+  # This picks the best match by checking the file path and contents against
+  # each grammar.
+  #
+  # * `filePath` A {String} file path.
+  # * `fileContents` A {String} of text for the file path.
+  #
+  # Returns a {Grammar}, never null.
+  selectGrammar: (filePath, fileContents) -> super
+
   # Deprecated: Used by settings-view to display snippets for packages
   @::accessor 'propertyStore', ->
     deprecate("Do not use this. Use a public method on Config")

src/keymap-extensions.coffee

@@ -23,6 +23,10 @@ KeymapManager::loadUserKeymap = ->
   if fs.isFileSync(userKeymapPath)
     @loadKeymap(userKeymapPath, watch: true, suppressErrors: true)
 
+KeymapManager::subscribeToFileReadFailure = ->
+  this.onDidFailToReadFile (error) ->
+    atom.notifications.addError('Failed to load keymap.cson', {detail: error.stack, closable: true})
+
 # This enables command handlers registered via jQuery to call
 # `.abortKeyBinding()` on the `jQuery.Event` object passed to the handler.
 jQuery.Event::abortKeyBinding = ->

src/lines-component.coffee

@@ -66,10 +66,10 @@ LinesComponent = React.createClass
 
       insertionPoint = document.createElement('content')
       insertionPoint.setAttribute('select', 'atom-overlay')
-      @overlayManager = new OverlayManager(@props.hostElement)
+      @overlayManager = new OverlayManager(@props.hostElement, @props.hostElement.viewRegistry)
       @getDOMNode().appendChild(insertionPoint)
     else
-      @overlayManager = new OverlayManager(@getDOMNode())
+      @overlayManager = new OverlayManager(@getDOMNode(), @props.hostElement.viewRegistry)
 
   shouldComponentUpdate: (newProps) ->
     return true unless isEqualForProperties(newProps, @props,

src/notification-manager.coffee

@@ -0,0 +1,44 @@
+{Emitter, Disposable} = require 'event-kit'
+Notification = require '../src/notification'
+
+# Experimental: Allows messaging the user. This will likely change, dont use
+# quite yet!
+module.exports =
+class NotificationManager
+  constructor: ->
+    @notifications = []
+    @emitter = new Emitter
+
+  ###
+  Section: Events
+  ###
+
+  onDidAddNotification: (callback) ->
+    @emitter.on 'did-add-notification', callback
+
+  ###
+  Section: Adding Notifications
+  ###
+
+  addSuccess: (message, options) ->
+    @addNotification(new Notification('success', message, options))
+
+  addInfo: (message, options) ->
+    @addNotification(new Notification('info', message, options))
+
+  addWarning: (message, options) ->
+    @addNotification(new Notification('warning', message, options))
+
+  addError: (message, options) ->
+    @addNotification(new Notification('error', message, options))
+
+  addFatalError: (message, options) ->
+    @addNotification(new Notification('fatal', message, options))
+
+  add: (type, message, options) ->
+    @addNotification(new Notification(type, message, options))
+
+  addNotification: (notification) ->
+    @notifications.push(notification)
+    @emitter.emit('did-add-notification', notification)
+    notification

src/notification.coffee

@@ -0,0 +1,33 @@
+
+# Experimental: This will likely change, do not use.
+module.exports =
+class Notification
+  constructor: (@type, @message, @options={}) ->
+    @timestamp = new Date()
+
+  getOptions: -> @options
+
+  getType: -> @type
+
+  getMessage: -> @message
+
+  getTimestamp: -> @timestamp
+
+  getDetail: -> @options.detail
+
+  isEqual: (other) ->
+    @getMessage() == other.getMessage() \
+      and @getType() == other.getType() \
+      and @getDetail() == other.getDetail()
+
+  isClosable: ->
+    !!@options.closable
+
+  getIcon: ->
+    return @options.icon if @options.icon?
+    switch @type
+      when 'fatal' then 'bug'
+      when 'error' then 'flame'
+      when 'warning' then 'alert'
+      when 'info' then 'info'
+      when 'success' then 'check'

src/overlay-manager.coffee

@@ -1,15 +1,18 @@
 module.exports =
 class OverlayManager
-  constructor: (@container) ->
+  constructor: (@container, @viewRegistry) ->
     @overlays = {}
 
   render: (props) ->
     {editor, overlayDecorations, lineHeightInPixels} = props
 
     existingDecorations = null
-    for markerId, {isMarkerReversed, headPixelPosition, decorations} of overlayDecorations
+    for markerId, {headPixelPosition, tailPixelPosition, decorations} of overlayDecorations
       for decoration in decorations
-        @renderOverlay(editor, decoration, headPixelPosition, lineHeightInPixels)
+        pixelPosition =
+          if decoration.position is 'tail' then tailPixelPosition else headPixelPosition
+
+        @renderOverlay(editor, decoration, pixelPosition, lineHeightInPixels)
 
         existingDecorations ?= {}
         existingDecorations[decoration.id] = true
@@ -22,7 +25,7 @@ class OverlayManager
     return
 
   renderOverlay: (editor, decoration, pixelPosition, lineHeightInPixels) ->
-    item = atom.views.getView(decoration.item)
+    item = @viewRegistry.getView(decoration.item)
     unless overlay = @overlays[decoration.id]
       overlay = @overlays[decoration.id] = document.createElement('atom-overlay')
       overlay.appendChild(item)

src/package.coffee

@@ -254,7 +254,7 @@ class Package
     grammarPaths = fs.listSync(grammarsDirPath, ['json', 'cson'])
     for grammarPath in grammarPaths
       try
-        grammar = atom.syntax.readGrammarSync(grammarPath)
+        grammar = atom.grammars.readGrammarSync(grammarPath)
         grammar.packageName = @name
         @grammars.push(grammar)
         grammar.activate()
@@ -268,7 +268,7 @@ class Package
     return Q() if @grammarsLoaded
 
     loadGrammar = (grammarPath, callback) =>
-      atom.syntax.readGrammar grammarPath, (error, grammar) =>
+      atom.grammars.readGrammar grammarPath, (error, grammar) =>
         if error?
           console.warn("Failed to load grammar: #{grammarPath}", error.stack ? error)
         else

src/pane-axis-element.coffee

@@ -8,7 +8,7 @@ class PaneAxisElement extends HTMLElement
   detachedCallback: ->
     @subscriptions.dispose()
 
-  setModel: (@model) ->
+  initialize: ({@viewRegistry, @model}) ->
     @subscriptions.add @model.onDidAddChild(@childAdded.bind(this))
     @subscriptions.add @model.onDidRemoveChild(@childRemoved.bind(this))
     @subscriptions.add @model.onDidReplaceChild(@childReplaced.bind(this))
@@ -22,12 +22,12 @@ class PaneAxisElement extends HTMLElement
         @classList.add('vertical', 'pane-column')
 
   childAdded: ({child, index}) ->
-    view = @model.getView(child)
+    view = @viewRegistry.getView(child)
     @insertBefore(view, @children[index])
     callAttachHooks(view) # for backward compatibility with SpacePen views
 
   childRemoved: ({child}) ->
-    view = @model.getView(child)
+    view = @viewRegistry.getView(child)
     view.remove()
 
   childReplaced:  ({index, oldChild, newChild}) ->

src/pane-axis.coffee

@@ -39,9 +39,6 @@ class PaneAxis extends Model
 
   getOrientation: -> @orientation
 
-  getView: (object) ->
-    @container.getView(object)
-
   getChildren: -> @children.slice()
 
   getPanes: ->

src/pane-container-element.coffee

@@ -11,7 +11,7 @@ class PaneContainerElement extends HTMLElement
     PaneContainerView ?= require './pane-container-view'
     @__spacePenView = new PaneContainerView(this)
 
-  setModel: (@model) ->
+  initialize: ({@viewRegistry, @model}) ->
     @subscriptions.add @model.observeRoot(@rootChanged.bind(this))
     @__spacePenView.setModel(@model)
 
@@ -19,7 +19,7 @@ class PaneContainerElement extends HTMLElement
     focusedElement = document.activeElement if @hasFocus()
     @firstChild?.remove()
     if root?
-      view = @model.getView(root)
+      view = @viewRegistry.getView(root)
       @appendChild(view)
       callAttachHooks(view)
       focusedElement?.focus()
@@ -45,7 +45,7 @@ class PaneContainerElement extends HTMLElement
       y = pointB.y - pointA.y
       Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2))
 
-    paneView = @model.getView(@model.getActivePane())
+    paneView = @viewRegistry.getView(@model.getActivePane())
     box = @boundingBoxForPaneView(paneView)
 
     paneViews = _.toArray(@querySelectorAll('atom-pane'))

src/pane-container-view.coffee

@@ -23,7 +23,7 @@ class PaneContainerView extends View
     @subscriptions.add @model.onDidChangeActivePaneItem(@onActivePaneItemChanged)
 
   getRoot: ->
-    view = @model.getView(@model.getRoot())
+    view = @element.viewRegistry.getView(@model.getRoot())
     view.__spacePenView ? view
 
   onActivePaneItemChanged: (activeItem) =>
@@ -55,7 +55,7 @@ class PaneContainerView extends View
     @getActivePaneView()
 
   getActivePaneView: ->
-    @model.getView(@model.getActivePane()).__spacePenView
+    @element.viewRegistry.getView(@model.getActivePane()).__spacePenView
 
   getActivePaneItem: ->
     @model.getActivePaneItem()
@@ -64,7 +64,7 @@ class PaneContainerView extends View
     @getActivePaneView()?.activeView
 
   paneForUri: (uri) ->
-    @model.getView(@model.paneForUri(uri)).__spacePenView
+    @element.viewRegistry.getView(@model.paneForUri(uri)).__spacePenView
 
   focusNextPaneView: ->
     @model.activateNextPane()

src/pane-container.coffee

@@ -9,7 +9,6 @@ PaneAxisElement = require './pane-axis-element'
 PaneAxis = require './pane-axis'
 TextEditor = require './text-editor'
 TextEditorElement = require './text-editor-element'
-ViewRegistry = require './view-registry'
 ItemRegistry = require './item-registry'
 
 module.exports =
@@ -36,7 +35,6 @@ class PaneContainer extends Model
     @subscriptions = new CompositeDisposable
 
     @itemRegistry = new ItemRegistry
-    @viewRegistry = params?.viewRegistry ? new ViewRegistry
     @registerViewProviders()
 
     @setRoot(params?.root ? new Pane)
@@ -58,25 +56,22 @@ class PaneContainer extends Model
     activePaneId: @activePane.id
 
   registerViewProviders: ->
-    @viewRegistry.addViewProvider
+    atom.views.addViewProvider
       modelConstructor: PaneContainer
       viewConstructor: PaneContainerElement
 
-    @viewRegistry.addViewProvider
+    atom.views.addViewProvider
       modelConstructor: PaneAxis
       viewConstructor: PaneAxisElement
 
-    @viewRegistry.addViewProvider
+    atom.views.addViewProvider
       modelConstructor: Pane
       viewConstructor: PaneElement
 
-    @viewRegistry.addViewProvider
+    atom.views.addViewProvider
       modelConstructor: TextEditor
       viewConstructor: TextEditorElement
 
-  getView: (object) ->
-    @viewRegistry.getView(object)
-
   onDidChangeRoot: (fn) ->
     @emitter.on 'did-change-root', fn
 

src/pane-element.coffee

@@ -43,9 +43,7 @@ class PaneElement extends HTMLElement
   createSpacePenShim: ->
     @__spacePenView = new PaneView(this)
 
-  getModel: -> @model
-
-  setModel: (@model) ->
+  initialize: ({@viewRegistry, @model}) ->
     @subscriptions.add @model.onDidActivate(@activated.bind(this))
     @subscriptions.add @model.observeActive(@activeStatusChanged.bind(this))
     @subscriptions.add @model.observeActiveItem(@activeItemChanged.bind(this))
@@ -53,8 +51,10 @@ class PaneElement extends HTMLElement
     @subscriptions.add @model.onDidDestroy(@paneDestroyed.bind(this))
     @__spacePenView.setModel(@model)
 
+  getModel: -> @model
+
   activated: ->
-    @focus() unless @hasFocus()
+    @focus()
 
   activeStatusChanged: (active) ->
     if active
@@ -66,7 +66,7 @@ class PaneElement extends HTMLElement
     return unless item?
 
     hasFocus = @hasFocus()
-    itemView = @model.getView(item)
+    itemView = @viewRegistry.getView(item)
 
     unless @itemViews.contains(itemView)
       @itemViews.appendChild(itemView)
@@ -94,14 +94,14 @@ class PaneElement extends HTMLElement
       itemView.style.display = 'none'
 
   itemRemoved: ({item, index, destroyed}) ->
-    if viewToRemove = @model.getView(item)
-      callRemoveHooks(viewToRemove)
+    if viewToRemove = @viewRegistry.getView(item)
+      callRemoveHooks(viewToRemove) if destroyed
       viewToRemove.remove()
 
   paneDestroyed: ->
     @subscriptions.dispose()
 
-  getActiveView: -> @model.getView(@model.getActiveItem())
+  getActiveView: -> @viewRegistry.getView(@model.getActiveItem())
 
   hasFocus: ->
     this is document.activeElement or @contains(document.activeElement)

src/pane-view.coffee

@@ -153,15 +153,15 @@ class PaneView extends View
   activeItemModifiedChanged: =>
     @trigger 'pane:active-item-modified-status-changed'
 
-  @::accessor 'activeView', -> @model.getView(@activeItem)?.__spacePenView
+  @::accessor 'activeView', -> @element.viewRegistry.getView(@activeItem)?.__spacePenView
 
-  splitLeft: (items...) -> @model.getView(@model.splitLeft({items})).__spacePenView
+  splitLeft: (items...) -> @element.viewRegistry.getView(@model.splitLeft({items})).__spacePenView
 
-  splitRight: (items...) -> @model.getView(@model.splitRight({items})).__spacePenView
+  splitRight: (items...) -> @element.viewRegistry.getView(@model.splitRight({items})).__spacePenView
 
-  splitUp: (items...) -> @model.getView(@model.splitUp({items})).__spacePenView
+  splitUp: (items...) -> @element.viewRegistry.getView(@model.splitUp({items})).__spacePenView
 
-  splitDown: (items...) -> @model.getView(@model.splitDown({items})).__spacePenView
+  splitDown: (items...) -> @element.viewRegistry.getView(@model.splitDown({items})).__spacePenView
 
   getContainer: -> @closest('atom-pane-container').view()
 

src/pane.coffee

@@ -53,9 +53,6 @@ class Pane extends Model
     params.activeItem = find params.items, (item) -> item.getUri?() is activeItemUri
     params
 
-  getView: (object) ->
-    @container.getView(object)
-
   getParent: -> @parent
 
   setParent: (@parent) -> @parent

src/panel-container-element.coffee

@@ -6,19 +6,24 @@ class PanelContainerElement extends HTMLElement
 
   getModel: -> @model
 
-  setModel: (@model) ->
+  initialize: ({@viewRegistry, @model}) ->
     @subscriptions.add @model.onDidAddPanel(@panelAdded.bind(this))
     @subscriptions.add @model.onDidRemovePanel(@panelRemoved.bind(this))
     @subscriptions.add @model.onDidDestroy(@destroyed.bind(this))
     @classList.add(@model.getLocation())
 
   panelAdded: ({panel, index}) ->
-    panelElement = panel.getView()
+    panelElement = @viewRegistry.getView(panel)
     panelElement.classList.add(@model.getLocation())
+    if @model.isModal()
+      panelElement.classList.add("overlay", "from-top")
+    else
+      panelElement.classList.add("tool-panel", "panel-#{@model.getLocation()}")
+
     if index >= @childNodes.length
       @appendChild(panelElement)
     else
-      referenceItem = @childNodes[index + 1]
+      referenceItem = @childNodes[index]
       @insertBefore(panelElement, referenceItem)
 
     if @model.isModal()
@@ -27,7 +32,7 @@ class PanelContainerElement extends HTMLElement
         @hideAllPanelsExcept(panel) if visible
 
   panelRemoved: ({panel, index}) ->
-    @removeChild(panel.getView())
+    @removeChild(@viewRegistry.getView(panel))
 
   destroyed: ->
     @subscriptions.dispose()

src/panel-container.coffee

@@ -2,7 +2,7 @@
 
 module.exports =
 class PanelContainer
-  constructor: ({@viewRegistry, @location}) ->
+  constructor: ({@location}={}) ->
     @emitter = new Emitter
     @subscriptions = new CompositeDisposable
     @panels = []
@@ -30,8 +30,6 @@ class PanelContainer
   Section: Panels
   ###
 
-  getView: -> @viewRegistry.getView(this)
-
   getLocation: -> @location
 
   isModal: -> @location is 'modal'

src/panel-element.coffee

@@ -7,16 +7,18 @@ class PanelElement extends HTMLElement
 
   getModel: -> @model
 
-  setModel: (@model) ->
-    view = @model.getItemView()
-    @appendChild(view)
-    callAttachHooks(view) # for backward compatibility with SpacePen views
+  initialize: ({@viewRegistry, @model}) ->
+    @appendChild(@getItemView())
 
     @classList.add(@model.getClassName().split(' ')...) if @model.getClassName()?
     @subscriptions.add @model.onDidChangeVisible(@visibleChanged.bind(this))
     @subscriptions.add @model.onDidDestroy(@destroyed.bind(this))
 
+  getItemView: ->
+    @viewRegistry.getView(@model.getItem())
+
   attachedCallback: ->
+    callAttachHooks(@getItemView()) # for backward compatibility with SpacePen views
     @visibleChanged(@model.isVisible())
 
   visibleChanged: (visible) ->

src/panel.coffee

@@ -14,7 +14,7 @@ class Panel
   Section: Construction and Destruction
   ###
 
-  constructor: ({@viewRegistry, @item, @visible, @priority, @className}) ->
+  constructor: ({@item, @visible, @priority, @className}) ->
     @emitter = new Emitter
     @visible ?= true
     @priority ?= 100
@@ -50,15 +50,8 @@ class Panel
   Section: Panel Details
   ###
 
-  # Public: Gets this panel model's view DOM node.
-  #
-  # Returns an `<atom-panel>` {Element}
-  getView: -> @viewRegistry.getView(this)
-
-  # Public: Gets your panel contents view.
-  #
-  # Returns an {Element} or jQuery element, depeneding on how you created the panel.
-  getItemView: -> @viewRegistry.getView(@item)
+  # Public: Returns the panel's item.
+  getItem: -> @item
 
   # Public: Returns a {Number} indicating this panel's priority.
   getPriority: -> @priority

src/project.coffee

@@ -64,7 +64,7 @@ class Project extends Model
   ###
 
   serializeParams: ->
-    path: @path
+    paths: @getPaths()
     buffers: _.compact(@buffers.map (buffer) -> buffer.serialize() if buffer.isRetained())
 
   deserializeParams: (params) ->

src/scroll-view.coffee

@@ -1,6 +1,6 @@
 {View} = require './space-pen-extensions'
 
-# Extended: Represents a view that scrolls.
+# Deprecated: Represents a view that scrolls.
 #
 # Handles several core events to update scroll position:
 #

src/select-list-view.coffee

@@ -2,7 +2,7 @@
 TextEditorView = require './text-editor-view'
 fuzzyFilter = require('fuzzaldrin').filter
 
-# Essential: Provides a view that renders a list of items with an editor that
+# Deprecated: Provides a view that renders a list of items with an editor that
 # filters the items. Used by many packages such as the fuzzy-finder,
 # command-palette, symbols-view and autocomplete.
 #

src/selection.coffee

@@ -359,8 +359,11 @@ class Selection extends Model
     @clear()
     @cursor.needsAutoscroll = @cursor.isLastCursor()
 
+    precedingText = @editor.getTextInRange([[oldBufferRange.start.row, 0], oldBufferRange.start])
+    startLevel = @editor.indentLevelForLine(precedingText)
+
     if options.indentBasis? and not options.autoIndent
-      text = @normalizeIndents(text, options.indentBasis)
+      text = @adjustIndent(text, startLevel - options.indentBasis)
 
     newBufferRange = @editor.buffer.setTextInRange(oldBufferRange, text, pick(options, 'undo', 'normalizeLineEndings'))
 
@@ -562,8 +565,10 @@ class Selection extends Model
   #   cursor's horizontal position. (default: false)
   copy: (maintainClipboard=false, fullLine=false) ->
     return if @isEmpty()
-    selectionText = @editor.buffer.getTextInRange(@getBufferRange())
-    selectionIndentation = @editor.indentationForBufferRow(@getBufferRange().start.row)
+    {start, end} = @getBufferRange()
+    selectionText = @editor.getTextInRange([start, end])
+    precedingText = @editor.getTextInRange([[start.row, 0], start])
+    startLevel = @editor.indentLevelForLine(precedingText)
 
     if maintainClipboard
       {text: clipboardText, metadata} = atom.clipboard.readWithMetadata()
@@ -572,16 +577,17 @@ class Selection extends Model
         metadata.selections = [{
           text: clipboardText,
           indentBasis: metadata.indentBasis,
+          fullLine: metadata.fullLine,
         }]
       metadata.selections.push({
         text: selectionText,
-        indentBasis: selectionIndentation,
+        indentBasis: startLevel,
         fullLine: fullLine
       })
       atom.clipboard.write([clipboardText, selectionText].join("\n"), metadata)
     else
       atom.clipboard.write(selectionText, {
-        indentBasis: selectionIndentation,
+        indentBasis: startLevel,
         fullLine: fullLine
       })
 
@@ -591,34 +597,22 @@ class Selection extends Model
     @editor.createFold(range.start.row, range.end.row)
     @cursor.setBufferPosition([range.end.row + 1, 0])
 
-  # Public: Indents the given text to the suggested level based on the grammar.
+  # Public: Increases the indentation level of
   #
-  # * `text` The {String} to indent within the selection.
-  # * `indentBasis` The beginning indent level.
-  normalizeIndents: (text, indentBasis) ->
-    textPrecedingCursor = @cursor.getCurrentBufferLine()[0...@cursor.getBufferColumn()]
-    isCursorInsideExistingLine = /\S/.test(textPrecedingCursor)
 
+  # * `indentIncrease` The beginning indent level.
+  adjustIndent: (text, indentIncrease) ->
     lines = text.split('\n')
-    firstLineIndentLevel = @editor.indentLevelForLine(lines[0])
-    if isCursorInsideExistingLine
-      minimumIndentLevel = @editor.indentationForBufferRow(@cursor.getBufferRow())
-    else
-      minimumIndentLevel = @cursor.getIndentLevel()
-
-    normalizedLines = []
-    for line, i in lines
-      if i == 0
-        indentLevel = 0
-      else if line == '' # remove all indentation from empty lines
-        indentLevel = 0
+    for line, i in lines when i > 0
+      if indentIncrease == 0
+        continue
+      else if indentIncrease > 0
+        lines[i] = @editor.buildIndentString(indentIncrease) + line
       else
-        lineIndentLevel = @editor.indentLevelForLine(lines[i])
-        indentLevel = minimumIndentLevel + (lineIndentLevel - indentBasis)
-
-      normalizedLines.push(@setIndentationForLine(line, indentLevel))
-
-    normalizedLines.join('\n')
+        currentIndentLevel = @editor.indentLevelForLine(lines[i])
+        indentLevel = Math.max(0, currentIndentLevel + indentIncrease)
+        lines[i] = line.replace(/^[\t ]+/, @editor.buildIndentString(indentLevel))
+    lines.join('\n')
 
   # Indent the current line(s).
   #
@@ -651,11 +645,6 @@ class Selection extends Model
     for row in [start..end]
       @editor.buffer.insert([row, 0], @editor.getTabText()) unless @editor.buffer.lineLengthForRow(row) == 0
 
-  setIndentationForLine: (line, indentLevel) ->
-    desiredIndentLevel = Math.max(0, indentLevel)
-    desiredIndentString = @editor.buildIndentString(desiredIndentLevel)
-    line.replace(/^[\t ]*/, desiredIndentString)
-
   ###
   Section: Managing multiple selections
   ###

src/space-pen-extensions.coffee

@@ -12,7 +12,7 @@ jQuery.cleanData = (elements) ->
 
 SpacePenCallRemoveHooks = SpacePen.callRemoveHooks
 SpacePen.callRemoveHooks = (element) ->
-  view.unsubscribe() for view in SpacePen.viewsForElement(element)
+  view.unsubscribe?() for view in SpacePen.viewsForElement(element)
   SpacePenCallRemoveHooks(element)
 
 NativeEventNames = new Set

src/style-manager.coffee

@@ -1,5 +1,12 @@
+fs = require 'fs-plus'
+path = require 'path'
 {Emitter, Disposable} = require 'event-kit'
 
+# Extended: A singleton instance of this class available via `atom.styles`,
+# which you can use to globally query and observe the set of active style
+# sheets. The `StyleManager` doesn't add any style elements to the DOM on its
+# own, but is instead subscribed to by individual `<atom-styles>` elements,
+# which clone and attach style elements in different contexts.
 module.exports =
 class StyleManager
   constructor: ->
@@ -7,19 +14,78 @@ class StyleManager
     @styleElements = []
     @styleElementsBySourcePath = {}
 
+  ###
+  Section: Event Subscription
+  ###
+
+  # Extended: Invoke `callback` for all current and future style elements.
+  #
+  # * `callback` {Function} that is called with style elements.
+  #   * `styleElement` An `HTMLStyleElement` instance. The `.sheet` property
+  #     will be null because this element isn't attached to the DOM. If you want
+  #     to attach this element to the DOM, be sure to clone it first by calling
+  #     `.cloneNode(true)` on it. The style element will also have the following
+  #     non-standard properties:
+  #     * `sourcePath` A {String} containing the path from which the style
+  #       element was loaded.
+  #     * `context` A {String} indicating the target context of the style
+  #       element.
+  #
+  # Returns a {Disposable} on which `.dispose()` can be called to cancel the
+  # subscription.
   observeStyleElements: (callback) ->
     callback(styleElement) for styleElement in @getStyleElements()
     @onDidAddStyleElement(callback)
 
+  # Extended: Invoke `callback` when a style element is added.
+  #
+  # * `callback` {Function} that is called with style elements.
+  #   * `styleElement` An `HTMLStyleElement` instance. The `.sheet` property
+  #     will be null because this element isn't attached to the DOM. If you want
+  #     to attach this element to the DOM, be sure to clone it first by calling
+  #     `.cloneNode(true)` on it. The style element will also have the following
+  #     non-standard properties:
+  #     * `sourcePath` A {String} containing the path from which the style
+  #       element was loaded.
+  #     * `context` A {String} indicating the target context of the style
+  #       element.
+  #
+  # Returns a {Disposable} on which `.dispose()` can be called to cancel the
+  # subscription.
   onDidAddStyleElement: (callback) ->
     @emitter.on 'did-add-style-element', callback
 
+  # Extended: Invoke `callback` when a style element is removed.
+  #
+  # * `callback` {Function} that is called with style elements.
+  #   * `styleElement` An `HTMLStyleElement` instance.
+  #
+  # Returns a {Disposable} on which `.dispose()` can be called to cancel the
+  # subscription.
   onDidRemoveStyleElement: (callback) ->
     @emitter.on 'did-remove-style-element', callback
 
+  # Extended: Invoke `callback` when an existing style element is updated.
+  #
+  # * `callback` {Function} that is called with style elements.
+  #   * `styleElement` An `HTMLStyleElement` instance. The `.sheet` property
+  #      will be null because this element isn't attached to the DOM. The style
+  #      element will also have the following non-standard properties:
+  #     * `sourcePath` A {String} containing the path from which the style
+  #       element was loaded.
+  #     * `context` A {String} indicating the target context of the style
+  #       element.
+  #
+  # Returns a {Disposable} on which `.dispose()` can be called to cancel the
+  # subscription.
   onDidUpdateStyleElement: (callback) ->
     @emitter.on 'did-update-style-element', callback
 
+  ###
+  Section: Reading Style Elements
+  ###
+
+  # Extended: Get all loaded style elements.
   getStyleElements: ->
     @styleElements.slice()
 
@@ -85,3 +151,17 @@ class StyleManager
     existingStyleElements = @getStyleElements()
     for styleElement in styleElementsToRestore
       @addStyleElement(styleElement) unless styleElement in existingStyleElements
+
+  ###
+  Section: Paths
+  ###
+
+  # Extended: Get the path of the user style sheet in `~/.atom`.
+  #
+  # Returns a {String}.
+  getUserStyleSheetPath: ->
+    stylesheetPath = fs.resolve(path.join(atom.getConfigDirPath(), 'styles'), ['css', 'less'])
+    if fs.isFileSync(stylesheetPath)
+      stylesheetPath
+    else
+      path.join(atom.getConfigDirPath(), 'styles.less')

src/text-editor-component.coffee

@@ -20,9 +20,6 @@ TextEditorComponent = React.createClass
   displayName: 'TextEditorComponent'
   mixins: [SubscriberMixin]
 
-  statics:
-    performSyncUpdates: false
-
   visible: false
   autoHeight: false
   backgroundColor: null
@@ -199,7 +196,6 @@ TextEditorComponent = React.createClass
   componentWillUnmount: ->
     {editor, hostElement} = @props
 
-    hostElement.__spacePenView.trigger 'editor:will-be-removed', [hostElement.__spacePenView]
     @unsubscribe()
     @scopedConfigSubscriptions.dispose()
     window.removeEventListener 'resize', @requestHeightAndWidthMeasurement
@@ -243,7 +239,7 @@ TextEditorComponent = React.createClass
       @updateRequestedWhilePaused = true
       return
 
-    if @performSyncUpdates ? TextEditorComponent.performSyncUpdates
+    if @props.hostElement.isUpdatedSynchronously()
       @forceUpdate()
     else unless @updateRequested
       @updateRequested = true
@@ -364,14 +360,16 @@ TextEditorComponent = React.createClass
     filteredDecorations = {}
     for markerId, decorations of decorationsByMarkerId
       marker = editor.getMarker(markerId)
-      headBufferPosition = marker.getHeadBufferPosition()
+      headScreenPosition = marker.getHeadScreenPosition()
+      tailScreenPosition = marker.getTailScreenPosition()
       if marker.isValid()
         for decoration in decorations
           if decoration.isType('overlay')
             decorationParams = decoration.getProperties()
             filteredDecorations[markerId] ?=
               id: markerId
-              headPixelPosition: editor.pixelPositionForScreenPosition(headBufferPosition)
+              headPixelPosition: editor.pixelPositionForScreenPosition(headScreenPosition)
+              tailPixelPosition: editor.pixelPositionForScreenPosition(tailScreenPosition)
               decorations: []
             filteredDecorations[markerId].decorations.push decorationParams
     filteredDecorations

src/text-editor-element.coffee

@@ -63,6 +63,9 @@ class TextEditorElement extends HTMLElement
     @component.checkForVisibilityChange()
     @focus() if @focusOnAttach
 
+  initialize: ({@viewRegistry, @lineOverdrawMargin, model}) ->
+    @setModel(model)
+
   setModel: (model) ->
     throw new Error("Model already assigned on TextEditorElement") if @model?
     return if model.isDestroyed()
@@ -103,7 +106,9 @@ class TextEditorElement extends HTMLElement
     )
     @component = React.renderComponent(@componentDescriptor, @rootElement)
 
-    unless @useShadowDOM
+    if @useShadowDOM
+      @shadowRoot.addEventListener('blur', @shadowRootBlurred.bind(this), true)
+    else
       inputNode = @component.refs.input.getDOMNode()
       inputNode.addEventListener 'focus', @focused.bind(this)
       inputNode.addEventListener 'blur', => @dispatchEvent(new FocusEvent('blur', bubbles: false))
@@ -128,6 +133,16 @@ class TextEditorElement extends HTMLElement
 
     @component?.blurred()
 
+  # Work around what seems to be a bug in Chromium. Focus can be stolen from the
+  # hidden input when clicking on the gutter and transferred to the
+  # already-focused host element. The host element never gets a 'focus' event
+  # however, which leaves us in a limbo state where the text editor element is
+  # focused but the hidden input isn't focused. This always refocuses the hidden
+  # input if a blur event occurs in the shadow DOM that is transferring focus
+  # back to the host element.
+  shadowRootBlurred: (event) ->
+    @component.focused() if event.relatedTarget is this
+
   addGrammarScopeAttribute: ->
     grammarScope = @model.getGrammar()?.scopeName?.replace(/\./g, ' ')
     @dataset.grammar = grammarScope
@@ -141,6 +156,10 @@ class TextEditorElement extends HTMLElement
   hasFocus: ->
     this is document.activeElement or @contains(document.activeElement)
 
+  setUpdatedSynchronously: (@updatedSynchronously) -> @updatedSynchronously
+
+  isUpdatedSynchronously: -> @updatedSynchronously
+
 stopEventPropagation = (commandListeners) ->
   newCommandListeners = {}
   for commandName, commandListener of commandListeners

src/text-editor-view.coffee

@@ -7,7 +7,7 @@ TextEditorElement = require './text-editor-element'
 TextEditorComponent = require './text-editor-component'
 {deprecate} = require 'grim'
 
-# Public: Represents the entire visual pane in Atom.
+# Deprecated: Represents the entire visual pane in Atom.
 #
 # The TextEditorView manages the {TextEditor}, which manages the file buffers.
 # `TextEditorView` is intentionally sparse. Most of the things you'll want
@@ -63,7 +63,7 @@ class TextEditorView extends View
       element = new TextEditorElement
       element.lineOverdrawMargin = props?.lineOverdrawMargin
       element.setAttribute(name, value) for name, value of attributes if attributes?
-      element.setModel(model)
+      element.initialize({model})
       return element.__spacePenView
 
     # Handle construction with an element
@@ -138,6 +138,7 @@ class TextEditorView extends View
 
   beforeRemove: ->
     @trigger 'editor:detached', [this]
+    @trigger 'editor:will-be-removed', [this]
     @attached = false
 
   remove: (selector, keepData) ->

src/text-editor.coffee

@@ -1098,34 +1098,49 @@ class TextEditor extends Model
   # abort the transaction, call {::abortTransaction} to terminate the function's
   # execution and revert any changes performed up to the abortion.
   #
-  # * `groupingInterval` (optional) This is the sames as the `groupingInterval`
-  #    parameter in {::beginTransaction}
-  # * `fn` A {Function} to call inside the transaction.
-  transact: (groupingInterval, fn) -> @buffer.transact(groupingInterval, fn)
-
-  # Extended: Start an open-ended transaction.
-  #
-  # Call {::commitTransaction} or {::abortTransaction} to terminate the
-  # transaction. If you nest calls to transactions, only the outermost
-  # transaction is considered. You must match every begin with a matching
-  # commit, but a single call to abort will cancel all nested transactions.
-  #
   # * `groupingInterval` (optional) The {Number} of milliseconds for which this
   #   transaction should be considered 'groupable' after it begins. If a transaction
   #   with a positive `groupingInterval` is committed while the previous transaction is
   #   still 'groupable', the two transactions are merged with respect to undo and redo.
+  # * `fn` A {Function} to call inside the transaction.
+  transact: (groupingInterval, fn) -> @buffer.transact(groupingInterval, fn)
+
+  # Deprecated: Start an open-ended transaction.
   beginTransaction: (groupingInterval) -> @buffer.beginTransaction(groupingInterval)
 
-  # Extended: Commit an open-ended transaction started with {::beginTransaction}
-  # and push it to the undo stack.
-  #
-  # If transactions are nested, only the outermost commit takes effect.
+  # Deprecated: Commit an open-ended transaction started with {::beginTransaction}.
   commitTransaction: -> @buffer.commitTransaction()
 
   # Extended: Abort an open transaction, undoing any operations performed so far
   # within the transaction.
   abortTransaction: -> @buffer.abortTransaction()
 
+  # Extended: Create a pointer to the current state of the buffer for use
+  # with {::revertToCheckpoint} and {::groupChangesSinceCheckpoint}.
+  #
+  # Returns a checkpoint value.
+  createCheckpoint: -> @buffer.createCheckpoint()
+
+  # Extended: Revert the buffer to the state it was in when the given
+  # checkpoint was created.
+  #
+  # The redo stack will be empty following this operation, so changes since the
+  # checkpoint will be lost. If the given checkpoint is no longer present in the
+  # undo history, no changes will be made to the buffer and this method will
+  # return `false`.
+  #
+  # Returns a {Boolean} indicating whether the operation succeeded.
+  revertToCheckpoint: (checkpoint) -> @buffer.revertToCheckpoint(checkpoint)
+
+  # Extended: Group all changes since the given checkpoint into a single
+  # transaction for purposes of undo/redo.
+  #
+  # If the given checkpoint is no longer present in the undo history, no
+  # grouping will be performed and this method will return `false`.
+  #
+  # Returns a {Boolean} indicating whether the operation succeeded.
+  groupChangesSinceCheckpoint: (checkpoint) -> @buffer.groupChangesSinceCheckpoint(checkpoint)
+
   ###
   Section: TextEditor Coordinates
   ###
@@ -1248,18 +1263,33 @@ class TextEditor extends Model
   # ## Arguments
   #
   # * `marker` A {Marker} you want this decoration to follow.
-  # * `decorationParams` An {Object} representing the decoration e.g. `{type: 'gutter', class: 'linter-error'}`
-  #   * `type` There are a few supported decoration types: `gutter`, `line`, and `highlight`
+  # * `decorationParams` An {Object} representing the decoration e.g.
+  #   `{type: 'gutter', class: 'linter-error'}`
+  #   * `type` There are a few supported decoration types: `gutter`, `line`,
+  #     `highlight`, and `overlay`. The behavior of the types are as follows:
+  #     * `gutter` Adds the given `class` to the line numbers overlapping the
+  #       rows spanned by the marker.
+  #     * `line` Adds the given `class` to the lines overlapping the rows
+  #        spanned by the marker.
+  #     * `highlight` Creates a `.highlight` div with the nested class with up
+  #       to 3 nested regions that fill the area spanned by the marker.
+  #     * `overlay` Positions the view associated with the given item at the
+  #       head or tail of the given marker, depending on the `position`
+  #       property.
   #   * `class` This CSS class will be applied to the decorated line number,
   #     line, or highlight.
-  #   * `onlyHead` (optional) If `true`, the decoration will only be applied to the head
-  #     of the marker. Only applicable to the `line` and `gutter` types.
-  #   * `onlyEmpty` (optional) If `true`, the decoration will only be applied if the
-  #     associated marker is empty. Only applicable to the `line` and
+  #   * `onlyHead` (optional) If `true`, the decoration will only be applied to
+  #     the head of the marker. Only applicable to the `line` and `gutter`
+  #     types.
+  #   * `onlyEmpty` (optional) If `true`, the decoration will only be applied if
+  #     the associated marker is empty. Only applicable to the `line` and
   #     `gutter` types.
-  #   * `onlyNonEmpty` (optional) If `true`, the decoration will only be applied if the
-  #     associated marker is non-empty.  Only applicable to the `line` and
-  #     gutter types.
+  #   * `onlyNonEmpty` (optional) If `true`, the decoration will only be applied
+  #     if the associated marker is non-empty.  Only applicable to the `line`
+  #     and gutter types.
+  #   * `position` (optional) Only applicable to decorations of type `overlay`,
+  #     controls where the overlay view is positioned relative to the marker.
+  #     Values can be `'head'` (the default), or `'tail'`.
   #
   # Returns a {Decoration} object
   decorateMarker: (marker, decorationParams) ->
@@ -1278,6 +1308,18 @@ class TextEditor extends Model
   decorationsForScreenRowRange: (startScreenRow, endScreenRow) ->
     @displayBuffer.decorationsForScreenRowRange(startScreenRow, endScreenRow)
 
+  # Extended: Get all decorations.
+  #
+  # Returns an {Array} of {Decoration}s.
+  getDecorations: ->
+    @displayBuffer.getDecorations()
+
+  # Extended: Get all decorations of type 'overlay'.
+  #
+  # Returns an {Array} of {Decoration}s.
+  getOverlayDecorations: ->
+    @displayBuffer.getOverlayDecorations()
+
   decorationForId: (id) ->
     @displayBuffer.decorationForId(id)
 

src/theme-manager.coffee

@@ -6,7 +6,7 @@ EmitterMixin = require('emissary').Emitter
 {File} = require 'pathwatcher'
 fs = require 'fs-plus'
 Q = require 'q'
-{deprecate} = require 'grim'
+Grim = require 'grim'
 
 Package = require './package'
 
@@ -57,61 +57,66 @@ class ThemeManager
   Section: Event Subscription
   ###
 
-  # Essential: Invoke `callback` when all styles have been reloaded.
+  # Essential: Invoke `callback` when style sheet changes associated with
+  # updating the list of active themes have completed.
   #
   # * `callback` {Function}
   onDidReloadAll: (callback) ->
     @emitter.on 'did-reload-all', callback
 
-  # Essential: Invoke `callback` when a stylesheet has been added to the dom.
+  # Deprecated: Invoke `callback` when a stylesheet has been added to the dom.
   #
   # * `callback` {Function}
   #   * `stylesheet` {StyleSheet} the style node
   #
   # Returns a {Disposable} on which `.dispose()` can be called to unsubscribe.
   onDidAddStylesheet: (callback) ->
+    Grim.deprecate("Use atom.styles.onDidAddStyleElement instead")
     @emitter.on 'did-add-stylesheet', callback
 
-  # Essential: Invoke `callback` when a stylesheet has been removed from the dom.
+  # Deprecated: Invoke `callback` when a stylesheet has been removed from the dom.
   #
   # * `callback` {Function}
   #   * `stylesheet` {StyleSheet} the style node
   #
   # Returns a {Disposable} on which `.dispose()` can be called to unsubscribe.
   onDidRemoveStylesheet: (callback) ->
+    Grim.deprecate("Use atom.styles.onDidRemoveStyleElement instead")
     @emitter.on 'did-remove-stylesheet', callback
 
-  # Essential: Invoke `callback` when a stylesheet has been updated.
+  # Deprecated: Invoke `callback` when a stylesheet has been updated.
   #
   # * `callback` {Function}
   #   * `stylesheet` {StyleSheet} the style node
   #
   # Returns a {Disposable} on which `.dispose()` can be called to unsubscribe.
   onDidUpdateStylesheet: (callback) ->
+    Grim.deprecate("Use atom.styles.onDidUpdateStyleElement instead")
     @emitter.on 'did-update-stylesheet', callback
 
-  # Essential: Invoke `callback` when any stylesheet has been updated, added, or removed.
+  # Deprecated: Invoke `callback` when any stylesheet has been updated, added, or removed.
   #
   # * `callback` {Function}
   #
   # Returns a {Disposable} on which `.dispose()` can be called to unsubscribe.
   onDidChangeStylesheets: (callback) ->
+    Grim.deprecate("Use atom.styles.onDidAdd/RemoveStyleElement instead")
     @emitter.on 'did-change-stylesheets', callback
 
   on: (eventName) ->
     switch eventName
       when 'reloaded'
-        deprecate 'Use ThemeManager::onDidReloadAll instead'
+        Grim.deprecate 'Use ThemeManager::onDidReloadAll instead'
       when 'stylesheet-added'
-        deprecate 'Use ThemeManager::onDidAddStylesheet instead'
+        Grim.deprecate 'Use ThemeManager::onDidAddStylesheet instead'
       when 'stylesheet-removed'
-        deprecate 'Use ThemeManager::onDidRemoveStylesheet instead'
+        Grim.deprecate 'Use ThemeManager::onDidRemoveStylesheet instead'
       when 'stylesheet-updated'
-        deprecate 'Use ThemeManager::onDidUpdateStylesheet instead'
+        Grim.deprecate 'Use ThemeManager::onDidUpdateStylesheet instead'
       when 'stylesheets-changed'
-        deprecate 'Use ThemeManager::onDidChangeStylesheets instead'
+        Grim.deprecate 'Use ThemeManager::onDidChangeStylesheets instead'
       else
-        deprecate 'ThemeManager::on is deprecated. Use event subscription methods instead.'
+        Grim.deprecate 'ThemeManager::on is deprecated. Use event subscription methods instead.'
     EmitterMixin::on.apply(this, arguments)
 
   ###
@@ -197,18 +202,15 @@ class ThemeManager
     atom.config.set('core.themes', enabledThemeNames)
 
   ###
-  Section: Managing Stylesheets
+  Section: Private
   ###
 
-  # Public: Returns the {String} path to the user's stylesheet under ~/.atom
+  # Returns the {String} path to the user's stylesheet under ~/.atom
   getUserStylesheetPath: ->
-    stylesheetPath = fs.resolve(path.join(@configDirPath, 'styles'), ['css', 'less'])
-    if fs.isFileSync(stylesheetPath)
-      stylesheetPath
-    else
-      path.join(@configDirPath, 'styles.less')
+    Grim.deprecate("Call atom.styles.getUserStyleSheetPath() instead")
+    atom.styles.getUserStyleSheetPath()
 
-  # Public: Resolve and apply the stylesheet specified by the path.
+  # Resolve and apply the stylesheet specified by the path.
   #
   # This supports both CSS and Less stylsheets.
   #
@@ -231,7 +233,7 @@ class ThemeManager
 
   loadUserStylesheet: ->
     @unwatchUserStylesheet()
-    userStylesheetPath = @getUserStylesheetPath()
+    userStylesheetPath = atom.styles.getUserStyleSheetPath()
     return unless fs.isFileSync(userStylesheetPath)
 
     @userStylesheetPath = userStylesheetPath
@@ -292,10 +294,6 @@ class ThemeManager
   applyStylesheet: (path, text, type='bundled') ->
     @styleSheetDisposablesBySourcePath[path] = atom.styles.addStyleSheet(text, sourcePath: path, group: type)
 
-  ###
-  Section: Private
-  ###
-
   stringToId: (string) ->
     string.replace(/\\/g, '/')
 
@@ -335,14 +333,18 @@ class ThemeManager
 
   isInitialLoadComplete: -> @initialLoadComplete
 
+  # FIXME: This should be moved to WorkspaceElement
   addActiveThemeClasses: ->
-    for pack in @getActiveThemes()
-      atom.workspaceView?[0]?.classList.add("theme-#{pack.name}")
+    if workspaceElement = document.querySelector('atom-workspace')
+      for pack in @getActiveThemes()
+        workspaceElement.classList.add("theme-#{pack.name}")
     return
 
+  # FIXME: This should be moved to WorkspaceElement
   removeActiveThemeClasses: ->
-    for pack in @getActiveThemes()
-      atom.workspaceView?[0]?.classList.remove("theme-#{pack.name}")
+    if workspaceElement = document.querySelector('atom-workspace')
+      for pack in @getActiveThemes()
+        workspaceElement.classList.remove("theme-#{pack.name}")
     return
 
   refreshLessCache: ->

src/tokenized-buffer.coffee

@@ -26,8 +26,8 @@ class TokenizedBuffer extends Model
   constructor: ({@buffer, @tabLength, @invisibles}) ->
     @emitter = new Emitter
 
-    @subscribe atom.syntax.onDidAddGrammar(@grammarAddedOrUpdated)
-    @subscribe atom.syntax.onDidUpdateGrammar(@grammarAddedOrUpdated)
+    @subscribe atom.grammars.onDidAddGrammar(@grammarAddedOrUpdated)
+    @subscribe atom.grammars.onDidUpdateGrammar(@grammarAddedOrUpdated)
 
     @subscribe @buffer.preemptDidChange (e) => @handleBufferChange(e)
     @subscribe @buffer.onDidChangePath (@bufferPath) => @reloadGrammar()
@@ -98,7 +98,7 @@ class TokenizedBuffer extends Model
     @emitter.emit 'did-change-grammar', grammar
 
   reloadGrammar: ->
-    if grammar = atom.syntax.selectGrammar(@buffer.getPath(), @buffer.getText())
+    if grammar = atom.grammars.selectGrammar(@buffer.getPath(), @buffer.getText())
       @setGrammar(grammar)
     else
       throw new Error("No grammar found for path: #{path}")

src/tooltip-manager.coffee

@@ -0,0 +1,60 @@
+_ = require 'underscore-plus'
+{Disposable} = require 'event-kit'
+{$} = require './space-pen-extensions'
+
+# Essential: Associates tooltips with HTML elements or selectors.
+module.exports =
+class TooltipManager
+  defaults:
+    delay:
+      show: 1000
+      hide: 100
+    container: 'body'
+    html: true
+    placement: 'auto top'
+    viewportPadding: 2
+
+  # Essential: Add a tooltip to the given element.
+  #
+  # * `target` An `HTMLElement`
+  # * `options` See http://getbootstrap.com/javascript/#tooltips for a full list
+  #   of options. You can also supply the following additional options:
+  #   * `title` {String} Text in the tip.
+  #   * `keyBindingCommand` A {String} containing a command name. If you specify
+  #     this option and a key binding exists that matches the command, it will
+  #     be appended to the title or rendered alone if no title is specified.
+  #   * `keyBindingTarget` An `HTMLElement` on which to look up the key binding.
+  #     If this option is not supplied, the first of all matching key bindings
+  #     for the given command will be rendered.
+  #
+  # Returns a {Disposable} on which `.dispose()` can be called to remove the
+  # tooltip.
+  add: (target, options) ->
+    requireBootstrapTooltip()
+
+    {keyBindingCommand, keyBindingTarget} = options
+
+    if keyBindingCommand?
+      bindings = atom.keymaps.findKeyBindings(command: keyBindingCommand, target: keyBindingTarget)
+      if options.title?
+        options.title += " " + getKeystroke(bindings)
+      else
+        options.title = getKeystroke(bindings)
+
+    $target = $(target)
+    $target.tooltip(_.defaults(options, @defaults))
+
+    new Disposable -> $target.tooltip('destroy')
+
+humanizeKeystrokes = (keystroke) ->
+  keystrokes = keystroke.split(' ')
+  keystrokes = (_.humanizeKeystroke(stroke) for stroke in keystrokes)
+  keystrokes.join(' ')
+
+getKeystroke = (bindings) ->
+  if bindings?.length
+    "<span class=\"keystroke\">#{humanizeKeystrokes(bindings[0].keystrokes)}</span>"
+  else
+
+requireBootstrapTooltip = _.once ->
+  atom.requireWithGlobals('bootstrap/js/tooltip', {jQuery: $})

src/view-factory.coffee

@@ -0,0 +1,106 @@
+{Disposable} = require 'event-kit'
+Grim = require 'grim'
+ViewRegistry = require './view-registry'
+
+# Essential: The `ViewFactory` can creates the appropriate views for a given
+# model object based on recipes registered via {::addViewProvider}. It is
+# available via `atom.views` as a singleton object.
+module.exports =
+class ViewFactory
+  constructor: ->
+    @providers = []
+    @deprecatedViewRegistry = new ViewRegistry(this)
+
+  # Essential: Add a provider that will be used by {::createView} to construct
+  # an element based on the constructor of the given model object.
+  #
+  # ## Examples
+  #
+  # Text editors are divided into a model and a view layer, so when you interact
+  # with methods like `atom.workspace.getActiveTextEditor()` you're only going
+  # to get the model object. We display text editors on screen by teaching the
+  # workspace what view constructor it should use to represent them:
+  #
+  # ```coffee
+  # atom.views.addViewProvider
+  #   modelConstructor: TextEditor
+  #   viewConstructor: TextEditorElement
+  # ```
+  #
+  # * `providerSpec` {Object} containing the following keys:
+  #   * `modelConstructor` Constructor {Function} for your model.
+  #   * `viewConstructor` (Optional) Constructor {Function} for your view. It
+  #     should be a subclass of `HTMLElement` (that is, your view should be a
+  #     DOM node) and   have a `::setModel()` method which will be called
+  #     immediately after construction. If you don't supply this property, you
+  #     must supply the `createView` property with a function that never returns
+  #     `undefined`.
+  #   * `createView` (Optional) Factory {Function} that must return a subclass
+  #     of `HTMLElement` or `undefined`. If this property is not present or the
+  #     function returns `undefined`, the view provider will fall back to the
+  #     `viewConstructor` property. If you don't provide this property, you must
+  #     provider a `viewConstructor` property.
+  #
+  # Returns a {Disposable} on which `.dispose()` can be called to remove the
+  # added provider.
+  addViewProvider: (providerSpec) ->
+    @providers.push(providerSpec)
+    new Disposable =>
+      @providers = @providers.filter (provider) -> provider isnt providerSpec
+
+  getView: (object, suppressDeprecationWarning) ->
+    unless suppressDeprecationWarning
+      Grim.deprecate("Call ::getView on the workspace element instead. The atom.views global is only intended to create views.")
+    @deprecatedViewRegistry.getView(object)
+
+  # Essential: Create an element for the given model object based on providers
+  # registered via {::addViewProvider}.
+  #
+  # ## Examples
+  #
+  # ### Creating a workspace element in specs
+  # ```coffee
+  # workspaceElement = atom.views.createView(atom.workspace)
+  # ```
+  #
+  # * `object` The model for which to create the view. A view provider matching
+  #   its constructor must be registered.
+  # * `params` (optional) An {Object} with which to initialize the view. If the
+  #   selected view provider has a `createView` method, the params will be
+  #   passed to it. If the view provider has a `viewConstructor` method,
+  #   `initialize` will be called on the element after creation with the
+  #   given params.
+  #
+  # Returns a DOM element.
+  createView: (object, params) ->
+    view =
+      if object instanceof HTMLElement
+        object
+      else if object?.jquery
+        object[0]?.__spacePenView ?= object
+        object[0]
+      else if provider = @findProvider(object)
+        params ?= {}
+        params.viewFactory = this
+        params.model = object
+        element = provider.createView?(params)
+        unless element?
+          element = new provider.viewConstructor
+          if not (typeof element.initialize is 'function') and (typeof element.setModel is 'function')
+            Grim.deprecate("Define `::initialize` instead of `::setModel` in your view. It will be passed a params hash including the model.")
+            element.setModel(object)
+          else
+            element.initialize(params)
+        element
+      else if viewConstructor = object?.getViewClass?()
+        Grim.deprecate("Add a view provider for your object on atom.views instead of implementing `::getViewClass`.")
+        view = new viewConstructor(object)
+        view[0].__spacePenView ?= view
+        view[0]
+      else
+        throw new Error("Can't create a view for #{object.constructor.name} instance. Please register a view provider.")
+    @deprecatedViewRegistry.views.set(object, view)
+    view
+
+  findProvider: (object) ->
+    @providers.find ({modelConstructor}) -> object instanceof modelConstructor

src/view-registry.coffee

@@ -1,144 +1,14 @@
-{Disposable} = require 'event-kit'
-
-# Essential: `ViewRegistry` handles the association between model and view
-# types in Atom. We call this association a View Provider. As in, for a given
-# model, this class can provide a view via {::getView}, as long as the
-# model/view association was registered via {::addViewProvider}
-#
-# If you're adding your own kind of pane item, a good strategy for all but the
-# simplest items is to separate the model and the view. The model handles
-# application logic and is the primary point of API interaction. The view
-# just handles presentation.
-#
-# View providers to inform the workspace how your model objects should be
-# presented in the DOM. A view provider must always return a DOM node, which
-# makes [HTML 5 custom elements](http://www.html5rocks.com/en/tutorials/webcomponents/customelements/)
-# an ideal tool for implementing views in Atom.
-#
-# You can access the `ViewRegistry` object via `atom.views`.
-#
-# ## Examples
-#
-# ### Getting the workspace element
-#
-# ```coffee
-# workspaceElement = atom.views.getView(atom.workspace)
-# ```
-#
-# ### Getting An Editor Element
-#
-# ```coffee
-# textEditor = atom.workspace.getActiveTextEditor()
-# textEditorElement = atom.views.getView(textEditor)
-# ```
-#
-# ### Getting A Pane Element
-#
-# ```coffee
-# pane = atom.workspace.getActivePane()
-# paneElement = atom.views.getView(pane)
-# ```
 module.exports =
 class ViewRegistry
-  constructor: ->
+  constructor: (@viewFactory) ->
     @views = new WeakMap
-    @providers = []
 
-  # Essential: Add a provider that will be used to construct views in the
-  # workspace's view layer based on model objects in its model layer.
-  #
-  # ## Examples
-  #
-  # Text editors are divided into a model and a view layer, so when you interact
-  # with methods like `atom.workspace.getActiveTextEditor()` you're only going
-  # to get the model object. We display text editors on screen by teaching the
-  # workspace what view constructor it should use to represent them:
-  #
-  # ```coffee
-  # atom.views.addViewProvider
-  #   modelConstructor: TextEditor
-  #   viewConstructor: TextEditorElement
-  # ```
-  #
-  # * `providerSpec` {Object} containing the following keys:
-  #   * `modelConstructor` Constructor {Function} for your model.
-  #   * `viewConstructor` (Optional) Constructor {Function} for your view. It
-  #     should be a subclass of `HTMLElement` (that is, your view should be a
-  #     DOM node) and   have a `::setModel()` method which will be called
-  #     immediately after construction. If you don't supply this property, you
-  #     must supply the `createView` property with a function that never returns
-  #     `undefined`.
-  #   * `createView` (Optional) Factory {Function} that must return a subclass
-  #     of `HTMLElement` or `undefined`. If this property is not present or the
-  #     function returns `undefined`, the view provider will fall back to the
-  #     `viewConstructor` property. If you don't provide this property, you must
-  #     provider a `viewConstructor` property.
-  #
-  # Returns a {Disposable} on which `.dispose()` can be called to remove the
-  # added provider.
-  addViewProvider: (providerSpec) ->
-    @providers.push(providerSpec)
-    new Disposable =>
-      @providers = @providers.filter (provider) -> provider isnt providerSpec
-
-  # Essential: Get the view associated with an object in the workspace.
-  #
-  # If you're just *using* the workspace, you shouldn't need to access the view
-  # layer, but view layer access may be necessary if you want to perform DOM
-  # manipulation that isn't supported via the model API.
-  #
-  # ## Examples
-  #
-  # ### Getting An Editor View
-  # ```coffee
-  # textEditor = atom.workspace.getActiveTextEditor()
-  # textEditorView = atom.views.getView(textEditor)
-  # ```
-  #
-  # ### Getting A Pane View
-  # ```coffee
-  # pane = atom.workspace.getActivePane()
-  # paneView = atom.views.getView(pane)
-  # ```
-  #
-  # ### Getting The Workspace View
-  #
-  # ```coffee
-  # workspaceView = atom.views.getView(atom.workspace)
-  # ```
-  #
-  # * `object` The object for which you want to retrieve a view. This can be a
-  #   pane item, a pane, or the workspace itself.
-  #
-  # Returns a DOM element.
   getView: (object) ->
     return unless object?
 
     if view = @views.get(object)
       view
     else
-      view = @createView(object)
+      view = @viewFactory.createView(object, viewRegistry: this)
       @views.set(object, view)
       view
-
-  createView: (object) ->
-    if object instanceof HTMLElement
-      object
-    else if object?.jquery
-      object[0]?.__spacePenView ?= object
-      object[0]
-    else if provider = @findProvider(object)
-      element = provider.createView?(object)
-      unless element?
-        element = new provider.viewConstructor
-        element.setModel(object)
-      element
-    else if viewConstructor = object?.getViewClass?()
-      view = new viewConstructor(object)
-      view[0].__spacePenView ?= view
-      view[0]
-    else
-      throw new Error("Can't create a view for #{object.constructor.name} instance. Please register a view provider.")
-
-  findProvider: (object) ->
-    @providers.find ({modelConstructor}) -> object instanceof modelConstructor

src/window-event-handler.coffee

@@ -14,12 +14,35 @@ class WindowEventHandler
   constructor: ->
     @reloadRequested = false
 
+    @subscribe ipc, 'message', (message, detail) ->
+      switch message
+        when 'open-path'
+          {pathToOpen, initialLine, initialColumn} = detail
+
+          unless atom.project?.getPaths().length
+            if fs.existsSync(pathToOpen) or fs.existsSync(path.dirname(pathToOpen))
+              atom.project?.setPaths([pathToOpen])
+
+          unless fs.isDirectorySync(pathToOpen)
+            atom.workspace?.open(pathToOpen, {initialLine, initialColumn})
+
+        when 'update-available'
+          atom.updateAvailable(detail)
+
+          # FIXME: Remove this when deprecations are removed
+          {releaseVersion, releaseNotes} = detail
+          detail = [releaseVersion, releaseNotes]
+
+          if workspaceElement = document.querySelector('atom-workspace')
+            atom.commands.dispatch workspaceElement, "window:update-available", detail
+
     @subscribe ipc, 'command', (command, args...) ->
       activeElement = document.activeElement
-      # Use root view if body has focus
-      if activeElement is document.body and atom.workspaceView?
-        activeElement = atom.workspaceView
-      $(activeElement).trigger(command, args...)
+      # Use the workspace element view if body has focus
+      if activeElement is document.body and workspaceElement = document.querySelector('atom-workspace')
+        activeElement = workspaceElement
+
+      atom.commands.dispatch(activeElement, command, args[0])
 
     @subscribe ipc, 'context-command', (command, args...) ->
       $(atom.contextMenu.activeElement).trigger(command, args...)
@@ -28,14 +51,6 @@ class WindowEventHandler
 
     @subscribe $(window), 'blur', -> document.body.classList.add('is-blurred')
 
-    @subscribeToCommand $(window), 'window:open-path', (event, {pathToOpen, initialLine, initialColumn}) ->
-      unless atom.project?.getPath()
-        if fs.existsSync(pathToOpen) or fs.existsSync(path.dirname(pathToOpen))
-          atom.project?.setPath(pathToOpen)
-
-      unless fs.isDirectorySync(pathToOpen)
-        atom.workspace?.open(pathToOpen, {initialLine, initialColumn})
-
     @subscribe $(window), 'beforeunload', =>
       confirmed = atom.workspace?.confirmClose()
       atom.hide() if confirmed and not @reloadRequested and atom.getCurrentWindow().isWebViewFocused()

src/workspace-element.coffee

@@ -6,9 +6,37 @@ scrollbarStyle = require 'scrollbar-style'
 {callAttachHooks} = require 'space-pen'
 WorkspaceView = null
 
+# Essential: The on-screen representation of the workspace. Unless you have
+# an explicit need access the view layer, you should prefer using the
+# {Workspace} model object via `atom.workspace`.
+#
+# ## Examples
+#
+# In specs, you can create a workspace element via the view factory and attach
+# it to the DOM:
+#
+# ```coffee
+# workspaceElement = atom.views.createElement(atom.workspace)
+# jasmine.attachToDOM(workspaceElement)
+#
+# # Get a reference to a nested element corresponding to a model object...
+# editorElement = workspaceElement.getView(atom.workspace.getActiveTextEditor)
+# ```
+#
+# In production, you can access the singleton instance of the workspace element
+# by pulling it directly from the DOM:
+#
+# ```coffee
+# workspaceElement = document.querySelector('atom-workspace')
+#
+# # Careful! Direct DOM manipulation is more likely to break as Atom changes
+# workspaceElement.addClass("foo")
+# ```
 module.exports =
 class WorkspaceElement extends HTMLElement
   globalTextEditorStyleSheet: null
+  viewRegistry: null
+  model: null
 
   createdCallback: ->
     @subscriptions = new CompositeDisposable
@@ -62,19 +90,20 @@ class WorkspaceElement extends HTMLElement
     WorkspaceView ?= require './workspace-view'
     @__spacePenView = new WorkspaceView(this)
 
-  getModel: -> @model
+  initialize: ({@viewFactory, @model}) ->
+    @viewRegistry = @viewFactory.deprecatedViewRegistry
+    atom.views.deprecatedViewRegistry = @viewRegistry
 
-  setModel: (@model) ->
-    @paneContainer = atom.views.getView(@model.paneContainer)
+    @paneContainer = @viewRegistry.getView(@model.paneContainer)
     @verticalAxis.appendChild(@paneContainer)
     @addEventListener 'focus', @handleFocus.bind(this)
 
     @panelContainers =
-      top: @model.panelContainers.top.getView()
-      left: @model.panelContainers.left.getView()
-      right: @model.panelContainers.right.getView()
-      bottom: @model.panelContainers.bottom.getView()
-      modal: @model.panelContainers.modal.getView()
+      top: @viewRegistry.getView(@model.panelContainers.top)
+      left: @viewRegistry.getView(@model.panelContainers.left)
+      right: @viewRegistry.getView(@model.panelContainers.right)
+      bottom: @viewRegistry.getView(@model.panelContainers.bottom)
+      modal: @viewRegistry.getView(@model.panelContainers.modal)
 
     @horizontalAxis.insertBefore(@panelContainers.left, @verticalAxis)
     @horizontalAxis.appendChild(@panelContainers.right)
@@ -86,6 +115,32 @@ class WorkspaceElement extends HTMLElement
 
     @__spacePenView.setModel(@model)
 
+  getModel: -> @model
+
+  # Essential: Get the view associated with a model in the workspace.
+  #
+  # ## Examples
+  #
+  # ### Get the active text editor's view element
+  # ```coffee
+  # # At the model level...
+  # activeTextEditor = atom.workspace.getActiveTextEditor()
+  #
+  # # At the view level...
+  # workspaceElement = document.querySelector('atom-workspace')
+  # textEditorElement = workspaceElement.getView(activeTextEditor)
+  #
+  # # Now manipulate the text editor's DOM at your own risk...
+  # ```
+  #
+  # * `model` A model object that's present in the workspace. It could be a
+  #   workspace model object such as a {Pane} or a {Panel}, or it could be a
+  #   third-party model such as a pane or panel's *item*.
+  #
+  # Returns a DOM element.
+  getView: (model) ->
+    @viewRegistry.getView(model)
+
   setTextEditorFontSize: (fontSize) ->
     @updateGlobalEditorStyle('font-size', fontSize + 'px')
 

src/workspace-view.coffee

@@ -12,7 +12,7 @@ PaneView = require './pane-view'
 PaneContainerView = require './pane-container-view'
 TextEditor = require './text-editor'
 
-# Extended: The top-level view for the entire window. An instance of this class is
+# Deprecated: The top-level view for the entire window. An instance of this class is
 # available via the `atom.workspaceView` global.
 #
 # It is backed by a model object, an instance of {Workspace}, which is available
@@ -59,7 +59,7 @@ class WorkspaceView extends View
 
   constructor: (@element) ->
     unless @element?
-      return atom.views.getView(atom.workspace).__spacePenView
+      return atom.views.getView(atom.workspace, true).__spacePenView
     super
     @deprecateViewEvents()
 

src/workspace.coffee

@@ -14,7 +14,6 @@ Panel = require './panel'
 PanelElement = require './panel-element'
 PanelContainer = require './panel-container'
 PanelContainerElement = require './panel-container-element'
-ViewRegistry = require './view-registry'
 WorkspaceElement = require './workspace-element'
 
 # Essential: Represents the state of the user interface for the entire window.
@@ -34,7 +33,6 @@ class Workspace extends Model
   @delegatesProperty 'activePane', 'activePaneItem', toProperty: 'paneContainer'
 
   @properties
-    viewRegistry: null
     paneContainer: null
     fullScreen: false
     destroyedItemUris: -> []
@@ -45,23 +43,22 @@ class Workspace extends Model
     @emitter = new Emitter
     @openers = []
 
-    viewRegistry = atom.views
-    @paneContainer ?= new PaneContainer({viewRegistry})
+    @paneContainer ?= new PaneContainer()
     @paneContainer.onDidDestroyPaneItem(@onPaneItemDestroyed)
 
     @panelContainers =
-      top: new PanelContainer({viewRegistry, location: 'top'})
-      left: new PanelContainer({viewRegistry, location: 'left'})
-      right: new PanelContainer({viewRegistry, location: 'right'})
-      bottom: new PanelContainer({viewRegistry, location: 'bottom'})
-      modal: new PanelContainer({viewRegistry, location: 'modal'})
+      top: new PanelContainer({location: 'top'})
+      left: new PanelContainer({location: 'left'})
+      right: new PanelContainer({location: 'right'})
+      bottom: new PanelContainer({location: 'bottom'})
+      modal: new PanelContainer({location: 'modal'})
 
     @subscribeToActiveItem()
 
     @addOpener (filePath) =>
       switch filePath
         when 'atom://.atom/stylesheet'
-          @open(atom.themes.getUserStylesheetPath())
+          @open(atom.styles.getUserStyleSheetPath())
         when 'atom://.atom/keymap'
           @open(atom.keymaps.getUserKeymapPath())
         when 'atom://.atom/config'
@@ -86,7 +83,6 @@ class Workspace extends Model
     for packageName in params.packagesWithActiveGrammars ? []
       atom.packages.getLoadedPackage(packageName)?.loadGrammarsSync()
 
-    params.paneContainer.viewRegistry = atom.views
     params.paneContainer = PaneContainer.deserialize(params.paneContainer)
     params
 
@@ -105,13 +101,13 @@ class Workspace extends Model
 
       packageNames.push(packageName)
       for scopeName in includedGrammarScopes ? []
-        addGrammar(atom.syntax.grammarForScopeName(scopeName))
+        addGrammar(atom.grammars.grammarForScopeName(scopeName))
 
     editors = @getTextEditors()
     addGrammar(editor.getGrammar()) for editor in editors
 
     if editors.length > 0
-      for grammar in atom.syntax.getGrammars() when grammar.injectionSelector
+      for grammar in atom.grammars.getGrammars() when grammar.injectionSelector
         addGrammar(grammar)
 
     _.uniq(packageNames)
@@ -377,11 +373,15 @@ class Workspace extends Model
   #   * `activatePane` A {Boolean} indicating whether to call {Pane::activate} on
   #     the containing pane. Defaults to `true`.
   openSync: (uri='', options={}) ->
-    deprecate("Don't use the `changeFocus` option") if options.changeFocus?
+    # TODO: Remove deprecated changeFocus option
+    if options.changeFocus?
+      deprecate("The `changeFocus` option has been renamed to `activatePane`")
+      options.activatePane = options.changeFocus
+      delete options.changeFocus
 
     {initialLine, initialColumn} = options
-    # TODO: Remove deprecated changeFocus option
-    activatePane = options.activatePane ? options.changeFocus ? true
+    activatePane = options.activatePane ? true
+
     uri = atom.project.resolve(uri)
 
     item = @activePane.itemForUri(uri)
@@ -395,7 +395,13 @@ class Workspace extends Model
     item
 
   openUriInPane: (uri, pane, options={}) ->
-    changeFocus = options.changeFocus ? true
+    # TODO: Remove deprecated changeFocus option
+    if options.changeFocus?
+      deprecate("The `changeFocus` option has been renamed to `activatePane`")
+      options.activatePane = options.changeFocus
+      delete options.changeFocus
+
+    activatePane = options.activatePane ? true
 
     if uri?
       item = pane.itemForUri(uri)
@@ -409,7 +415,7 @@ class Workspace extends Model
           @paneContainer.root = pane
         @itemOpened(item)
         pane.activateItem(item)
-        pane.activate() if changeFocus
+        pane.activate() if activatePane
         index = pane.getActiveItemIndex()
         @emit "uri-opened"
         @emitter.emit 'did-open', {uri, pane, item, index}
@@ -609,12 +615,16 @@ class Workspace extends Model
   Section: Panels
   ###
 
+  # Essential: Get an {Array} of all the panel items at the bottom of the editor window.
+  getBottomPanels: ->
+    @getPanels('bottom')
+
   # Essential: Adds a panel item to the bottom of the editor window.
   #
   # * `options` {Object}
   #   * `item` Your panel content. It can be DOM element, a jQuery element, or
-  #     a model with a view registered via {ViewRegistry::addViewProvider}. We recommend the
-  #     latter. See {ViewRegistry::addViewProvider} for more information.
+  #     a model with a view registered via {ViewFactory::addViewProvider}. We recommend the
+  #     latter. See {ViewFactory::addViewProvider} for more information.
   #   * `visible` (optional) {Boolean} false if you want the panel to initially be hidden
   #     (default: true)
   #   * `priority` (optional) {Number} Determines stacking order. Lower priority items are
@@ -624,12 +634,16 @@ class Workspace extends Model
   addBottomPanel: (options) ->
     @addPanel('bottom', options)
 
+  # Essential: Get an {Array} of all the panel items to the left of the editor window.
+  getLeftPanels: ->
+    @getPanels('left')
+
   # Essential: Adds a panel item to the left of the editor window.
   #
   # * `options` {Object}
   #   * `item` Your panel content. It can be DOM element, a jQuery element, or
-  #     a model with a view registered via {ViewRegistry::addViewProvider}. We recommend the
-  #     latter. See {ViewRegistry::addViewProvider} for more information.
+  #     a model with a view registered via {ViewFactory::addViewProvider}. We recommend the
+  #     latter. See {ViewFactory::addViewProvider} for more information.
   #   * `visible` (optional) {Boolean} false if you want the panel to initially be hidden
   #     (default: true)
   #   * `priority` (optional) {Number} Determines stacking order. Lower priority items are
@@ -639,12 +653,16 @@ class Workspace extends Model
   addLeftPanel: (options) ->
     @addPanel('left', options)
 
+  # Essential: Get an {Array} of all the panel items to the right of the editor window.
+  getRightPanels: ->
+    @getPanels('right')
+
   # Essential: Adds a panel item to the right of the editor window.
   #
   # * `options` {Object}
   #   * `item` Your panel content. It can be DOM element, a jQuery element, or
-  #     a model with a view registered via {ViewRegistry::addViewProvider}. We recommend the
-  #     latter. See {ViewRegistry::addViewProvider} for more information.
+  #     a model with a view registered via {ViewFactory::addViewProvider}. We recommend the
+  #     latter. See {ViewFactory::addViewProvider} for more information.
   #   * `visible` (optional) {Boolean} false if you want the panel to initially be hidden
   #     (default: true)
   #   * `priority` (optional) {Number} Determines stacking order. Lower priority items are
@@ -654,12 +672,16 @@ class Workspace extends Model
   addRightPanel: (options) ->
     @addPanel('right', options)
 
+  # Essential: Get an {Array} of all the panel items at the top of the editor window.
+  getTopPanels: ->
+    @getPanels('top')
+
   # Essential: Adds a panel item to the top of the editor window above the tabs.
   #
   # * `options` {Object}
   #   * `item` Your panel content. It can be DOM element, a jQuery element, or
-  #     a model with a view registered via {ViewRegistry::addViewProvider}. We recommend the
-  #     latter. See {ViewRegistry::addViewProvider} for more information.
+  #     a model with a view registered via {ViewFactory::addViewProvider}. We recommend the
+  #     latter. See {ViewFactory::addViewProvider} for more information.
   #   * `visible` (optional) {Boolean} false if you want the panel to initially be hidden
   #     (default: true)
   #   * `priority` (optional) {Number} Determines stacking order. Lower priority items are
@@ -669,12 +691,16 @@ class Workspace extends Model
   addTopPanel: (options) ->
     @addPanel('top', options)
 
+  # Essential: Get an {Array} of all the modal panel items
+  getModalPanels: ->
+    @getPanels('modal')
+
   # Essential: Adds a panel item as a modal dialog.
   #
   # * `options` {Object}
   #   * `item` Your panel content. It can be DOM element, a jQuery element, or
-  #     a model with a view registered via {ViewRegistry::addViewProvider}. We recommend the
-  #     latter. See {ViewRegistry::addViewProvider} for more information.
+  #     a model with a view registered via {ViewFactory::addViewProvider}. We recommend the
+  #     latter. See {ViewFactory::addViewProvider} for more information.
   #   * `visible` (optional) {Boolean} false if you want the panel to initially be hidden
   #     (default: true)
   #   * `priority` (optional) {Number} Determines stacking order. Lower priority items are
@@ -682,11 +708,11 @@ class Workspace extends Model
   #
   # Returns a {Panel}
   addModalPanel: (options={}) ->
-    # TODO: remove these default classes. They are to supoprt existing themes.
-    options.className ?= 'overlay from-top'
     @addPanel('modal', options)
 
+  getPanels: (location) ->
+    @panelContainers[location].getPanels()
+
   addPanel: (location, options) ->
     options ?= {}
-    options.viewRegistry = atom.views
     @panelContainers[location].addPanel(new Panel(options))

static/index.js

@@ -2,8 +2,26 @@ window.onload = function() {
   try {
     var startTime = Date.now();
 
+    var fs = require('fs');
     var path = require('path');
 
+    // Patch fs.statSyncNoException/fs.lstatSyncNoException to fail for non-strings
+    // https://github.com/atom/atom-shell/issues/843
+    var statSyncNoException = fs.statSyncNoException;
+    var lstatSyncNoException = fs.lstatSyncNoException;
+    fs.statSyncNoException = function(pathToStat) {
+      if (pathToStat && typeof pathToStat === 'string')
+        return statSyncNoException(pathToStat);
+      else
+        return false;
+    };
+    fs.lstatSyncNoException = function(pathToStat) {
+      if (pathToStat && typeof pathToStat === 'string')
+        return lstatSyncNoException(pathToStat);
+      else
+        return false;
+    };
+
     // Skip "?loadSettings=".
     var loadSettings = JSON.parse(decodeURIComponent(location.search.substr(14)));
 

static/jasmine.less

@@ -136,7 +136,18 @@ body {
   }
 
   .result-message.deprecation-message {
-    color: #f0ad4e;
+    font-weight: normal;
+    color: darken(#f0ad4e, 20%);
+    line-height: 1.4;
+
+    a {
+      color: darken(#f0ad4e, 15%);
+    }
+
+    code {
+      color: darken(#f0ad4e, 20%);
+      background: lighten(#f0ad4e, 35%);
+    }
   }
 
   .stack-trace {

static/utilities.less

@@ -64,13 +64,3 @@ div > .inline-block-tight:last-child {
     margin-left: 0;
   }
 }
-
-.error {
-  -webkit-animation: flash-error 0.3s ease-in;
-}
-
-@-webkit-keyframes flash-error {
-  0% { background: @background-color-error; }
-
-  100% { background: auto; }
-}