fix(scope): remove scope $destroy event

CHANGELOG.md

@@ -209,6 +209,11 @@ behavior and migrate your controllers one at a time: <https://gist.github.com/16
   - before: `scope.$watch('expression', function(scope, newVal, oldVal) {})`
   - after: `scope.$watch('expression', function(newVal, oldVal, scope) {}, true)`
 
+- `scope.$destroy` doesn't cause the `$destroy` event to be emitted any more - this event was
+   primarily used by the old forms implementation and is not needed any more. We are considering
+   broadcasting this event in the future, which could then be used by directives and child scopes to
+   be notified of their scope destruction.
+
 
 ## New directives:
 

src/service/scope.js

@@ -450,15 +450,12 @@ function $RootScopeProvider(){
        * scope and its children. Removal also implies that the current scope is eligible for garbage
        * collection.
        *
-       * The destructing scope emits an `$destroy` {@link angular.module.ng.$rootScope.Scope#$emit event}.
-       *
        * The `$destroy()` is usually used by directives such as
        * {@link angular.module.ng.$compileProvider.directive.ng-repeat ng-repeat} for managing the unrolling of the loop.
        *
        */
       $destroy: function() {
         if (this.$root == this) return; // we can't remove the root node;
-        this.$emit('$destroy');
         var parent = this.$parent;
 
         if (parent.$$childHead == this) parent.$$childHead = this.$$nextSibling;

test/directive/ngViewSpec.js

@@ -317,9 +317,11 @@ describe('ng-view', function() {
     var createCtrl = function(name) {
       return function($scope) {
         log.push('init-' + name);
-        $scope.$on('$destroy', function() {
+        var destroy = $scope.$destroy;
+        $scope.$destroy = function() {
           log.push('destroy-' + name);
-        });
+          destroy.call($scope);
+        }
       };
     };
 
@@ -367,7 +369,11 @@ describe('ng-view', function() {
     function createController(name) {
       return function($scope) {
         log.push('init-' + name);
-        $scope.$on('$destroy', logger('destroy-' + name));
+        var destroy = $scope.$destroy;
+        $scope.$destroy = function() {
+          log.push('destroy-' + name);
+          destroy.call($scope);
+        }
         $scope.$on('$routeUpdate', logger('route-update'));
       };
     }

test/service/compilerSpec.js

@@ -1743,12 +1743,9 @@ describe('$compile', function() {
         expect(widgetScope.$parent).toEqual($rootScope);
         expect(transcludeScope.$parent).toEqual($rootScope);
 
-        var removed = 0;
-        $rootScope.$on('$destroy', function() { removed++; });
         $rootScope.select = false;
         $rootScope.$apply();
         expect(element.text()).toEqual('Hello: Misko!');
-        expect(removed).toEqual(1);
         expect(widgetScope.$$nextSibling).toEqual(null);
       });
     });

test/service/scopeSpec.js

@@ -393,16 +393,6 @@ describe('Scope', function() {
       $rootScope.$digest();
       expect(log).toEqual('12');
     }));
-
-    it('should fire a $destroy event', inject(function($rootScope) {
-      var destructedScopes = [];
-      middle.$on('$destroy', function(event) {
-        destructedScopes.push(event.currentScope);
-      });
-      middle.$destroy();
-      expect(destructedScopes).toEqual([middle]);
-    }));
-
   });