Let's start with deprecations!

src/text-editor-component.coffee

@@ -361,6 +361,12 @@ class TextEditorComponent
       @scrollViewNode.scrollTop = 0
       @scrollViewNode.scrollLeft = 0
 
+  onDidChangeScrollTop: (callback) ->
+    @presenter.onDidChangeScrollTop(callback)
+
+  onDidChangeScrollLeft: (callback) ->
+    @presenter.onDidChangeScrollLeft(callback)
+
   setScrollLeft: (scrollLeft) ->
     @presenter.setScrollLeft(scrollLeft)
 

src/text-editor-element.coffee

@@ -218,6 +218,12 @@ class TextEditorElement extends HTMLElement
   onDidDetach: (callback) ->
     @emitter.on("did-detach", callback)
 
+  onDidChangeScrollTop: (callback) ->
+    @component.onDidChangeScrollTop(callback)
+
+  onDidChangeScrollLeft: (callback) ->
+    @component.onDidChangeScrollLeft(callback)
+
   setScrollLeft: (scrollLeft) ->
     @component.setScrollLeft(scrollLeft)
 

src/text-editor-presenter.coffee

@@ -1561,6 +1561,8 @@ class TextEditorPresenter
       @scrollColumn = Math.round(@scrollLeft / @baseCharacterWidth)
       @model.setScrollColumn(@scrollColumn)
 
+      @emitter.emit 'did-change-scroll-top', @scrollLeft
+
     @pendingScrollLeft = null
 
   commitPendingScrollTopPosition: ->
@@ -1574,6 +1576,7 @@ class TextEditorPresenter
       @model.setScrollRow(@scrollRow)
 
       @didStartScrolling()
+      @emitter.emit 'did-change-scroll-top', @scrollTop
 
     @pendingScrollTop = null
 
@@ -1590,3 +1593,9 @@ class TextEditorPresenter
     @commitPendingLogicalScrollPosition()
     @commitPendingScrollLeftPosition()
     @commitPendingScrollTopPosition()
+
+  onDidChangeScrollTop: (callback) ->
+    @emitter.on 'did-change-scroll-top', callback
+
+  onDidChangeScrollLeft: (callback) ->
+    @emitter.on 'did-change-scroll-left', callback

src/text-editor.coffee

@@ -433,10 +433,14 @@ class TextEditor extends Model
     @displayBuffer.onDidChangeCharacterWidths(callback)
 
   onDidChangeScrollTop: (callback) ->
-    @emitter.on 'did-change-scroll-top', callback
+    Grim.deprecate("This is now a view method. Call TextEditorElement::onDidChangeScrollTop instead.")
+
+    atom.views.getView(this).onDidChangeScrollTop(callback)
 
   onDidChangeScrollLeft: (callback) ->
-    @emitter.on 'did-change-scroll-left', callback
+    Grim.deprecate("This is now a view method. Call TextEditorElement::onDidChangeScrollLeft instead.")
+
+    atom.views.getView(this).onDidChangeScrollLeft(callback)
 
   onDidChangeScrollPosition: (callback) ->
     @displayBuffer.onDidChangeScrollPosition(callback)