Move autoOutdent code to LanguageMode

src/app/ace-outdent-adaptor.coffee

@@ -1,5 +1,3 @@
-Range = require 'range'
-
 module.exports =
 class AceOutdentAdaptor
   constructor: (@editSession) ->
@@ -12,11 +10,8 @@ class AceOutdentAdaptor
   findMatchingBracket: ({row, column}) ->
     {row: 0, column: 0}
 
-  # Does not actually replace text, just line at range.start outdents one level
+  # Does not actually replace text; always outdents one level
   replace: (range, text) ->
-    {row, column} = @editSession.getCursorBufferPosition()
     start = range.start
     end = {row: range.start.row, column: range.start.column + @editSession.tabText.length}
-    @buffer.change(new Range(start, end), "")
-    @editSession.setCursorBufferPosition({row, column: column - @editSession.tabText.length})
-
+    @buffer.change([start, end], "")

src/app/edit-session.coffee

@@ -214,8 +214,8 @@ class EditSession
     return { text } unless @autoIndent
     @languageMode.autoIndentTextAfterBufferPosition(text, bufferPosition)
 
-  autoOutdent: ->
-    @languageMode.autoOutdentText()
+  autoOutdentBufferRow: (bufferRow) ->
+    @languageMode.autoOutdentBufferRow(bufferRow)
 
   toggleLineCommentsInRange: (range) ->
     @languageMode.toggleLineCommentsInRange(range)

src/app/language-mode.coffee

@@ -6,6 +6,7 @@ Range = require 'range'
 Point = require 'point'
 AceLineCommentAdaptor = require 'ace-line-comment-adaptor'
 AceFoldAdaptor = require 'ace-fold-adaptor'
+AceOutdentAdaptor = require 'ace-outdent-adaptor'
 
 module.exports =
 class LanguageMode
@@ -20,6 +21,7 @@ class LanguageMode
     @buffer.on "change.languageMode#{@id}", (e) => @handleBufferChange(e)
     @aceLineCommentAdaptor = new AceLineCommentAdaptor(@buffer)
     @aceFoldAdaptor = new AceFoldAdaptor(this)
+    @aceOutdentAdaptor = new AceOutdentAdaptor(this)
 
   requireAceMode: ->
     extension = if @buffer.getPath() then @buffer.getPath().split('/').pop().split('.').pop() else null
@@ -60,6 +62,10 @@ class LanguageMode
 
     {text, shouldOutdent}
 
+  autoOutdentBufferRow: (bufferRow) ->
+    state = @stateForRow(bufferRow)
+    @aceMode.autoOutdent(state, @aceOutdentAdaptor, bufferRow)
+
   handleBufferChange: (e) ->
     oldRange = e.oldRange.copy()
     newRange = e.newRange.copy()

src/app/selection.coffee

@@ -130,7 +130,7 @@ class Selection
     @clear()
     newBufferRange = @editSession.buffer.change(oldBufferRange, text)
     @cursor.setBufferPosition(newBufferRange.end, skipAtomicTokens: true) if wasReversed
-    @autoOutdentText() if shouldOutdent
+    @autoOutdent() if shouldOutdent
 
   backspace: ->
     @editSession.destroyFoldsContainingBufferRow(@getBufferRange().end.row)
@@ -199,11 +199,8 @@ class Selection
   autoIndentText: (text) ->
     @editSession.autoIndentTextAfterBufferPosition(text, @cursor.getBufferPosition())
 
-  autoOutdentText: ->
-    screenRow = @cursor.getCurrentScreenRow()
-    bufferRow = @cursor.getCurrentBufferRow()
-    state = @editSession.stateForScreenRow(screenRow)
-    @editSession.getCurrentMode().autoOutdent(state, new AceOutdentAdaptor(@editSession), bufferRow)
+  autoOutdent: ->
+    @editSession.autoOutdentBufferRow(@cursor.getCurrentBufferRow())
 
   handleBufferChange: (e) ->
     @modifyScreenRange =>