Handle Decoration::update

src/decoration.coffee

@@ -24,7 +24,11 @@ class Decoration
     @emit 'destoryed'
 
   update: (newParams) ->
-    # TODO: implement
+    oldParams = @params
+    @params = newParams
+    @params.id = @id
+    @displayBuffer.decorationUpdated(this)
+    @emit 'updated', {oldParams, newParams}
 
   getParams: ->
     @params

src/display-buffer.coffee

@@ -814,6 +814,9 @@ class DisplayBuffer extends Model
     delete @decorationMarkerChangedSubscriptions[marker.id]
     delete @decorationMarkerDestroyedSubscriptions[marker.id]
 
+  decorationUpdated: (decoration) ->
+    @emit 'decoration-updated', decoration
+
   # Retrieves a {DisplayBufferMarker} based on its id.
   #
   # id - A {Number} representing a marker id

src/editor-component.coffee

@@ -332,6 +332,7 @@ EditorComponent = React.createClass
     @subscribe editor, 'decoration-added', @onDecorationChanged
     @subscribe editor, 'decoration-removed', @onDecorationChanged
     @subscribe editor, 'decoration-changed', @onDecorationChanged
+    @subscribe editor, 'decoration-updated', @onDecorationChanged
     @subscribe editor, 'character-widths-changed', @onCharacterWidthsChanged
     @subscribe editor.$scrollTop.changes, @onScrollTopChanged
     @subscribe editor.$scrollLeft.changes, @requestUpdate

src/editor.coffee

@@ -219,6 +219,7 @@ class Editor extends Model
     @subscribe @displayBuffer, "decoration-added", (args...) => @emit 'decoration-added', args...
     @subscribe @displayBuffer, "decoration-removed", (args...) => @emit 'decoration-removed', args...
     @subscribe @displayBuffer, "decoration-changed", (args...) => @emit 'decoration-changed', args...
+    @subscribe @displayBuffer, "decoration-updated", (args...) => @emit 'decoration-updated', args...
     @subscribe @displayBuffer, "character-widths-changed", (changeCount) => @emit 'character-widths-changed', changeCount
 
   getViewClass: ->