Rename Callback mix-in to Emitter.

src/core/Emitter.js

@@ -11,11 +11,11 @@
  */
 
 /**
- * @name Callback
+ * @name Emitter
  * @namespace
  * @private
  */
-var Callback = {
+var Emitter = {
     attach: function(type, func) {
         // If an object literal is passed, attach all callbacks defined in it
         if (typeof type !== 'string') {

src/core/PaperScopeItem.js

@@ -19,7 +19,7 @@
  *
  * @private
  */
-var PaperScopeItem = Base.extend(Callback, /** @lends PaperScopeItem# */{
+var PaperScopeItem = Base.extend(Emitter, /** @lends PaperScopeItem# */{
 
     /**
      * Creates a PaperScopeItem object.

src/item/Item.js

@@ -20,7 +20,7 @@
  * is unique to their type, but share the underlying properties and functions
  * that they inherit from Item.
  */
-var Item = Base.extend(Callback, /** @lends Item# */{
+var Item = Base.extend(Emitter, /** @lends Item# */{
     statics: {
         /**
          * Override Item.extend() to merge the subclass' _serializeFields with
@@ -1230,7 +1230,7 @@ var Item = Base.extend(Callback, /** @lends Item# */{
     },
 
     /**
-     * Overrides Callback#_installEvents to also call _installEvents on all
+     * Overrides Emitter#_installEvents to also call _installEvents on all
      * children.
      */
     _installEvents: function _installEvents(install) {

src/paper.js

@@ -49,7 +49,7 @@ var paper = new function(undefined) {
 /*#*/ }
 
 /*#*/ include('core/Base.js');
-/*#*/ include('core/Callback.js');
+/*#*/ include('core/Emitter.js');
 /*#*/ include('core/PaperScope.js');
 /*#*/ include('core/PaperScopeItem.js');
 

src/ui/Component.js

@@ -14,7 +14,7 @@
   * @name Component
   * @class
   */
-var Component = Base.extend(Callback, /** @lends Component# */{
+var Component = Base.extend(Emitter, /** @lends Component# */{
     _class: 'Component',
     _events: [ 'onChange', 'onClick' ],
 

src/ui/Palette.js

@@ -14,7 +14,7 @@
   * @name Palette
   * @class
   */
-var Palette = Base.extend(Callback, /** @lends Palette# */{
+var Palette = Base.extend(Emitter, /** @lends Palette# */{
     _class: 'Palette',
     _events: [ 'onChange' ],
 

src/view/View.js

@@ -19,7 +19,7 @@
  * center, both useful for constructing artwork that should appear centered on
  * screen.
  */
-var View = Base.extend(Callback, /** @lends View# */{
+var View = Base.extend(Emitter, /** @lends View# */{
     _class: 'View',
 
     initialize: function View(project, element) {