refactor(scope): separate controller from scope

Controller is standalone object, created using "new" operator, not messed up with scope anymore.
Instead, related scope is injected as $scope.

See design proposal: https://docs.google.com/document/pub?id=1SsgVj17ec6tnZEX3ugsvg0rVVR11wTso5Md-RdEmC0k

Closes #321
Closes #425

Breaks controller methods are not exported to scope automatically
Breaks Scope#$new() does not take controller as argument anymore

8 files changed, 63 insertions, 66 deletions

diff --git a/src/service/compiler.js b/src/service/compiler.js
index 727f7983..adf1ffa9 100644
--- a/src/service/compiler.js
+++ b/src/service/compiler.js
@@ -22,7 +22,7 @@ function $CompileProvider(){
           var childScope = scope,
               locals = {$element: element};
           if (this.newScope) {
-            childScope = isFunction(this.newScope) ? scope.$new(this.newScope(scope)) : scope.$new();
+            childScope = scope.$new();
             element.data($$scope, childScope);
           }
           forEach(this.linkFns, function(fn) {
diff --git a/src/service/filter/filters.js b/src/service/filter/filters.js
index 3e7f8e37..69bfbacf 100644
--- a/src/service/filter/filters.js
+++ b/src/service/filter/filters.js
@@ -18,8 +18,8 @@
    <doc:example>
      <doc:source>
        <script>
-         function Ctrl() {
-           this.amount = 1234.56;
+         function Ctrl($scope) {
+           $scope.amount = 1234.56;
          }
        </script>
        <div ng:controller="Ctrl">
@@ -69,8 +69,8 @@ function currencyFilter($locale) {
    <doc:example>
      <doc:source>
        <script>
-         function Ctrl() {
-           this.val = 1234.56789;
+         function Ctrl($scope) {
+           $scope.val = 1234.56789;
          }
        </script>
        <div ng:controller="Ctrl">
@@ -448,8 +448,8 @@ var uppercaseFilter = valueFn(uppercase);
    <doc:example>
      <doc:source>
        <script>
-         function Ctrl() {
-           this.snippet =
+         function Ctrl($scope) {
+           $scope.snippet =
              '<p style="color:blue">an html\n' +
              '<em onmouseover="this.textContent=\'PWN3D!\'">click here</em>\n' +
              'snippet</p>';
@@ -538,8 +538,8 @@ function htmlFilter() {
    <doc:example>
      <doc:source>
        <script>
-         function Ctrl() {
-           this.snippet =
+         function Ctrl($scope) {
+           $scope.snippet =
              'Pretty text with some links:\n'+
              'http://angularjs.org/,\n'+
              'mailto:us@somewhere.org,\n'+
diff --git a/src/service/filter/limitTo.js b/src/service/filter/limitTo.js
index a250bd3b..eb97fdad 100644
--- a/src/service/filter/limitTo.js
+++ b/src/service/filter/limitTo.js
@@ -25,9 +25,9 @@
    <doc:example>
      <doc:source>
        <script>
-         function Ctrl() {
-           this.numbers = [1,2,3,4,5,6,7,8,9];
-           this.limit = 3;
+         function Ctrl($scope) {
+           $scope.numbers = [1,2,3,4,5,6,7,8,9];
+           $scope.limit = 3;
          }
        </script>
        <div ng:controller="Ctrl">
diff --git a/src/service/filter/orderBy.js b/src/service/filter/orderBy.js
index 2e5a0286..c67d2769 100644
--- a/src/service/filter/orderBy.js
+++ b/src/service/filter/orderBy.js
@@ -32,14 +32,14 @@
    <doc:example>
      <doc:source>
        <script>
-         function Ctrl() {
-           this.friends =
+         function Ctrl($scope) {
+           $scope.friends =
                [{name:'John', phone:'555-1212', age:10},
                 {name:'Mary', phone:'555-9876', age:19},
                 {name:'Mike', phone:'555-4321', age:21},
                 {name:'Adam', phone:'555-5678', age:35},
                 {name:'Julie', phone:'555-8765', age:29}]
-           this.predicate = '-age';
+           $scope.predicate = '-age';
          }
        </script>
        <div ng:controller="Ctrl">
diff --git a/src/service/formFactory.js b/src/service/formFactory.js
index 15a4733f..565b22a4 100644
--- a/src/service/formFactory.js
+++ b/src/service/formFactory.js
@@ -25,15 +25,13 @@
     <doc:example>
       <doc:source>
         <script>
-          function EditorCntl() {
-            this.html = '<b>Hello</b> <i>World</i>!';
+          function EditorCntl($scope) {
+            $scope.html = '<b>Hello</b> <i>World</i>!';
           }
 
-          HTMLEditorWidget.$inject = ['$element', 'htmlFilter'];
-          function HTMLEditorWidget(element, htmlFilter) {
-            var self = this;
-
-            this.$parseModel = function() {
+          HTMLEditorWidget.$inject = ['$element', '$scope', 'htmlFilter'];
+          function HTMLEditorWidget(element, scope, htmlFilter) {
+            scope.$parseModel = function() {
               // need to protect for script injection
               try {
                 this.$viewValue = htmlFilter(this.$modelValue || '').get();
@@ -47,13 +45,13 @@
               }
             }
 
-            this.$render = function() {
+            scope.$render = function() {
               element.html(this.$viewValue);
             }
 
             element.bind('keyup', function() {
-              self.$apply(function() {
-                self.$emit('$viewChange', element.html());
+              scope.$apply(function() {
+                scope.$emit('$viewChange', element.html());
               });
             });
           }
@@ -104,7 +102,8 @@
 
 function $FormFactoryProvider() {
   var $parse;
-  this.$get = ['$rootScope', '$parse',  function($rootScope, $parse_) {
+  this.$get = ['$rootScope', '$parse', '$injector',
+      function($rootScope, $parse_, $injector) {
     $parse = $parse_;
     /**
      * @ngdoc proprety
@@ -136,7 +135,9 @@ function $FormFactoryProvider() {
     return formFactory;
 
     function formFactory(parent) {
-      return (parent || formFactory.rootForm).$new(FormController);
+      var scope = (parent || formFactory.rootForm).$new();
+      $injector.instantiate(FormController, {$scope: scope});
+      return scope;
     }
 
   }];
@@ -230,8 +231,11 @@ function $FormFactoryProvider() {
    * @param {*} viewValue The new value for the view which will be assigned to `widget.$viewValue`.
    */
 
-  function FormController() {
-    var form = this,
+  FormController.$inject = ['$scope', '$injector'];
+  function FormController($scope, $injector) {
+    this.$injector = $injector;
+
+    var form = this.form = $scope,
         $error = form.$error = {};
 
     form.$on('$destroy', function(event){
@@ -257,6 +261,7 @@ function $FormFactoryProvider() {
     });
 
     propertiesUpdate(form);
+    form.$createWidget = bind(this, this.$createWidget);
 
     function removeWidget(queue, errorKey, widget) {
       if (queue) {
@@ -354,17 +359,19 @@ function $FormFactoryProvider() {
    * @returns {Widget} Instance of a widget scope.
    */
   FormController.prototype.$createWidget = function(params) {
-    var form = this,
+    var form = this.form,
         modelScope = params.scope,
         onChange = params.onChange,
         alias = params.alias,
         scopeGet = $parse(params.model),
         scopeSet = scopeGet.assign,
-        widget = this.$new(params.controller, params.controllerArgs);
+        widget = form.$new();
+
+    this.$injector.instantiate(params.controller, extend({$scope: widget}, params.controllerArgs));
 
     if (!scopeSet) {
       throw Error("Expression '" + params.model + "' is not assignable!");
-    };
+    }
 
     widget.$error = {};
     // Set the state to something we know will change to get the process going.
diff --git a/src/service/http.js b/src/service/http.js
index b008aa8e..9d57ed76 100644
--- a/src/service/http.js
+++ b/src/service/http.js
@@ -395,29 +395,28 @@ function $HttpProvider() {
         <doc:example>
           <doc:source jsfiddle="false">
             <script>
-              function FetchCtrl($http) {
-                var self = this;
-                this.method = 'GET';
-                this.url = 'examples/http-hello.html';
+              function FetchCtrl($scope, $http) {
+                $scope.method = 'GET';
+                $scope.url = 'examples/http-hello.html';
 
-                this.fetch = function() {
-                  self.code = null;
-                  self.response = null;
+                $scope.fetch = function() {
+                  $scope.code = null;
+                  $scope.response = null;
 
-                  $http({method: self.method, url: self.url}).
+                  $http({method: $scope.method, url: $scope.url}).
                     success(function(data, status) {
-                      self.status = status;
-                      self.data = data;
+                      $scope.status = status;
+                      $scope.data = data;
                     }).
                     error(function(data, status) {
-                      self.data = data || "Request failed";
-                      self.status = status;
+                      $scope.data = data || "Request failed";
+                      $scope.status = status;
                   });
                 };
 
-                this.updateModel = function(method, url) {
-                  self.method = method;
-                  self.url = url;
+                $scope.updateModel = function(method, url) {
+                  $scope.method = method;
+                  $scope.url = url;
                 };
               }
             </script>
diff --git a/src/service/route.js b/src/service/route.js
index 77d94e9c..04bcfdb6 100644
--- a/src/service/route.js
+++ b/src/service/route.js
@@ -63,8 +63,8 @@
     </doc:example>
  */
 function $RouteProvider(){
-  this.$get = ['$rootScope', '$location', '$routeParams',
-      function( $rootScope,  $location,  $routeParams) {
+  this.$get = ['$rootScope', '$location', '$routeParams', '$injector',
+      function( $rootScope,  $location,  $routeParams, $injector) {
     /**
      * @ngdoc event
      * @name angular.module.ng.$route#$beforeRouteChange
@@ -278,8 +278,10 @@ function $RouteProvider(){
             }
           } else {
             copy(next.params, $routeParams);
-            (Controller = next.controller) && inferInjectionArgs(Controller);
-            next.scope = parentScope.$new(Controller);
+            next.scope = parentScope.$new();
+            if (next.controller) {
+              $injector.instantiate(next.controller, {$scope: next.scope});
+            }
           }
         }
         $rootScope.$broadcast('$afterRouteChange', next, last);
diff --git a/src/service/scope.js b/src/service/scope.js
index fe72c953..089e4a41 100644
--- a/src/service/scope.js
+++ b/src/service/scope.js
@@ -126,8 +126,9 @@ function $RootScopeProvider(){
        * @function
        *
        * @description
-       * Creates a new child {@link angular.module.ng.$rootScope.Scope scope}. The new scope can optionally behave as a
-       * controller. The parent scope will propagate the {@link angular.module.ng.$rootScope.Scope#$digest $digest()} and
+       * Creates a new child {@link angular.module.ng.$rootScope.Scope scope}.
+       *
+       * The parent scope will propagate the {@link angular.module.ng.$rootScope.Scope#$digest $digest()} and
        * {@link angular.module.ng.$rootScope.Scope#$digest $digest()} events. The scope can be removed from the scope
        * hierarchy using {@link angular.module.ng.$rootScope.Scope#$destroy $destroy()}.
        *
@@ -135,13 +136,10 @@ function $RootScopeProvider(){
        * the scope and its child scopes to be permanently detached from the parent and thus stop
        * participating in model change detection and listener notification by invoking.
        *
-       * @param {function()=} Class Constructor function which the scope should be applied to the scope.
-       * @param {...*} curryArguments Any additional arguments which are curried into the constructor.
-       *        See {@link guide/dev_guide.di dependency injection}.
        * @returns {Object} The newly created child scope.
        *
        */
-      $new: function(Class, curryArguments) {
+      $new: function() {
         var Child = function() {}; // should be anonymous; This is so that when the minifier munges
           // the name it does not become random set of chars. These will then show up as class
           // name in the debugger.
@@ -161,15 +159,6 @@ function $RootScopeProvider(){
         } else {
           this.$$childHead = this.$$childTail = child;
         }
-        // short circuit if we have no class
-        if (Class) {
-          // can't use forEach, we need speed!
-          var ClassPrototype = Class.prototype;
-          for(var key in ClassPrototype) {
-            child[key] = bind(child, ClassPrototype[key]);
-          }
-          $injector.invoke(Class, child, curryArguments);
-        }
         return child;
       },