Don't use atom globals in PanelContainerElement

spec/panel-container-element-spec.coffee

@@ -20,10 +20,6 @@ describe "PanelContainerElement", ->
   beforeEach ->
     jasmineContent = document.body.querySelector('#jasmine-content')
 
-    atom.views.addViewProvider Panel, (model) ->
-      new PanelElement().initialize(model)
-    atom.views.addViewProvider PanelContainer, (model) ->
-      new PaneContainerElement().initialize(model)
     atom.views.addViewProvider TestPanelContainerItem, (model) ->
       new TestPanelContainerItemElement().initialize(model)
 

src/atom-environment.coffee

@@ -197,8 +197,8 @@ class AtomEnvironment extends Model
   registerDefaultViewProviders: ->
     @views.addViewProvider Workspace, (model, env) ->
       new WorkspaceElement().initialize(model, env)
-    @views.addViewProvider PanelContainer, (model) ->
-      new PanelContainerElement().initialize(model)
+    @views.addViewProvider PanelContainer, (model, env) ->
+      new PanelContainerElement().initialize(model, env)
     @views.addViewProvider Panel, (model, env) ->
       new PanelElement().initialize(model, env)
     @views.addViewProvider PaneContainer, (model) ->

src/panel-container-element.coffee

@@ -4,7 +4,9 @@ class PanelContainerElement extends HTMLElement
   createdCallback: ->
     @subscriptions = new CompositeDisposable
 
-  initialize: (@model) ->
+  initialize: (@model, {@views}) ->
+    throw new Error("Must pass a views parameter when initializing PanelContainerElements") unless @views?
+
     @subscriptions.add @model.onDidAddPanel(@panelAdded.bind(this))
     @subscriptions.add @model.onDidRemovePanel(@panelRemoved.bind(this))
     @subscriptions.add @model.onDidDestroy(@destroyed.bind(this))