Move PaneContainerView::saveAll to the model

src/pane-container-view.coffee

@@ -1,4 +1,5 @@
 Serializable = require 'serializable'
+Delegator = require 'delegato'
 {$, View} = require './space-pen-extensions'
 PaneView = require './pane-view'
 PaneContainer = require './pane-container'
@@ -8,6 +9,7 @@ module.exports =
 class PaneContainerView extends View
   atom.deserializers.add(this)
   Serializable.includeInto(this)
+  Delegator.includeInto(this)
 
   @deserialize: (state) ->
     new this(PaneContainer.deserialize(state.model))
@@ -62,9 +64,6 @@ class PaneContainerView extends View
     @setRoot(null)
     @trigger 'pane:removed', [child] if child instanceof PaneView
 
-  saveAll: ->
-    pane.saveItems() for pane in @getPanes()
-
   confirmClose: ->
     saved = true
     for pane in @getPanes()

src/pane-container.coffee

@@ -40,6 +40,9 @@ class PaneContainer extends Model
   paneForUri: (uri) ->
     find @getPanes(), (pane) -> pane.itemForUri(uri)?
 
+  saveAll: ->
+    pane.saveItems() for pane in @getPanes()
+
   activateNextPane: ->
     panes = @getPanes()
     if panes.length > 1

src/workspace-view.coffee

@@ -46,7 +46,7 @@ class WorkspaceView extends View
 
   @delegatesProperty 'fullScreen', 'destroyedItemUris', toProperty: 'model'
   @delegatesMethods 'open', 'openSync', 'openSingletonSync', 'reopenItemSync',
-    'saveActivePaneItem', 'saveActivePaneItemAs', toProperty: 'model'
+    'saveActivePaneItem', 'saveActivePaneItemAs', 'saveAll', toProperty: 'model'
 
   @version: 4
 
@@ -231,10 +231,6 @@ class WorkspaceView extends View
   # FIXME: Difference between active and focused pane?
   getFocusedPane: -> @panes.getFocusedPane()
 
-  # Public: Saves all of the open items within panes.
-  saveAll: ->
-    @panes.saveAll()
-
   # Public: Fires a callback on each open {PaneView}.
   eachPane: (callback) ->
     @panes.eachPane(callback)

src/workspace.coffee

@@ -12,7 +12,7 @@ class Workspace extends Model
   Serializable.includeInto(this)
 
   @delegatesProperty 'activePane', 'activePaneItem', toProperty: 'paneContainer'
-  @delegatesMethod 'getPanes', toProperty: 'paneContainer'
+  @delegatesMethod 'getPanes', 'saveAll', toProperty: 'paneContainer'
 
   @properties
     paneContainer: -> new PaneContainer