Use pane events to trigger pane-container:active-pane-item-changed

src/pane-container.coffee

@@ -36,6 +36,21 @@ class PaneContainer extends View
         else
           @setRoot(null)
 
+    @on 'pane:attached', (event, pane) =>
+      @triggerActiveItemChange() if @getActivePane() is pane
+
+    @on 'pane:removed', (event, pane) =>
+      @triggerActiveItemChange() unless @getActivePane()?
+
+    @on 'pane:became-active', =>
+      @triggerActiveItemChange()
+
+    @on 'pane:active-item-changed', (event, item) =>
+      @triggerActiveItemChange() if @getActivePaneItem() is item
+
+  triggerActiveItemChange: ->
+    @trigger 'pane-container:active-pane-item-changed', [@getActivePaneItem()]
+
   serialize: ->
     state = @state.clone()
     state.set('root', @getRoot()?.serialize())
@@ -92,9 +107,6 @@ class PaneContainer extends View
     @destroyedItemStates = @destroyedItemStates.filter (itemState) ->
       itemState.uri isnt itemUri
 
-  triggerActiveItemChange: (item) ->
-    @trigger 'pane-container:active-pane-item-changed', [item]
-
   getRoot: ->
     @children().first().view()
 
@@ -103,7 +115,6 @@ class PaneContainer extends View
     if root?
       @append(root)
       @itemAdded(root.activeItem) if root.activeItem
-    @triggerActiveItemChange(root?.getActivePaneItem()) unless suppressPaneItemChangeEvents
     @state.set(root: root?.getState())
 
   removeChild: (child) ->

src/pane.coffee

@@ -175,7 +175,6 @@ class Pane extends View
     view.focus() if isFocused
     @activeItem = item
     @activeView = view
-    @getContainer()?.triggerActiveItemChange(item) if @isActive()
     @trigger 'pane:active-item-changed', [item]
 
     @state.set('activeItemUri', item.getUri?())
@@ -426,7 +425,6 @@ class Pane extends View
       when 'after' then parent.insertChildAfter(this, newPane)
     @getContainer().adjustPaneDimensions()
     newPane.focus()
-    @getContainer().triggerActiveItemChange(newPane.getActivePaneItem())
     newPane
 
   # Private: