fix(ngTransclude): make the transclusion available to parent post-link

previously the translusion was appended the the ngTranslude element via
$evalAsync which makes the transluded dom unavailable to parent
post-linking functions. By appending translusion in linking phase,
post-linking functions will be able to access it.

Author: IgorMinar

src/ng/directive/ngTransclude.js

@@ -49,14 +49,16 @@
  *
  */
 var ngTranscludeDirective = ngDirective({
-  controller: ['$transclude', '$element', '$scope', function($transclude, $element, $scope) {
-    // use evalAsync so that we don't process transclusion before directives on the parent element even when the
-    // transclusion replaces the current element. (we can't use priority here because that applies only to compile fns
-    // and not controllers
-    $scope.$evalAsync(function() {
-      $transclude(function(clone) {
-        $element.append(clone);
-      });
+  controller: ['$transclude', function($transclude) {
+    // remember the transclusion fn but call it during linking so that we don't process transclusion before directives on
+    // the parent element even when the transclusion replaces the current element. (we can't use priority here because
+    // that applies only to compile fns and not controllers
+    this.$transclude = $transclude;
+  }],
+
+  link: function($scope, $element, $attrs, controller) {
+    controller.$transclude(function(clone) {
+      $element.append(clone);
     });
-  }]
+  }
 });

test/ng/compileSpec.js

@@ -2823,10 +2823,67 @@ describe('$compile', function() {
         expect(jqLite(element.find('span')[1]).text()).toEqual('T:true');
       });
     });
+
+
+    it('should make the result of a transclusion available to the parent directive in post-linking phase (template)',
+        function() {
+      module(function() {
+        directive('trans', function(log) {
+          return {
+            transclude: true,
+            template: '<div ng-transclude></div>',
+            link: {
+              pre: function($scope, $element) {
+                log('pre(' + $element.text() + ')');
+              },
+              post: function($scope, $element) {
+                log('post(' + $element.text() + ')');
+              }
+            }
+          };
+        });
+      });
+      inject(function(log, $rootScope, $compile) {
+        element = $compile('<div trans><span>unicorn!</span></div>')($rootScope);
+        $rootScope.$apply();
+        expect(log).toEqual('pre(); post(unicorn!)');
+      });
+    });
+
+
+    it('should make the result of a transclusion available to the parent directive in pre- and post- linking phase (templateUrl)',
+        function() {
+          // when compiling an async directive the transclusion is always processed before the directive
+          // this is different compared to sync directive. delaying the transclusion makes little sense.
+
+      module(function() {
+        directive('trans', function(log) {
+          return {
+            transclude: true,
+            templateUrl: 'trans.html',
+            link: {
+              pre: function($scope, $element) {
+                log('pre(' + $element.text() + ')');
+              },
+              post: function($scope, $element) {
+                log('post(' + $element.text() + ')');
+              }
+            }
+          };
+        });
+      });
+      inject(function(log, $rootScope, $compile, $templateCache) {
+        $templateCache.put('trans.html', '<div ng-transclude></div>');
+
+        element = $compile('<div trans><span>unicorn!</span></div>')($rootScope);
+        $rootScope.$apply();
+        expect(log).toEqual('pre(unicorn!); post(unicorn!)');
+      });
+    });
   });
 
 
-  describe('img[src] sanitization', function($sce) {
+  describe('img[src] sanitization', function() {
     it('should NOT require trusted values for img src', inject(function($rootScope, $compile, $sce) {
       element = $compile('<img src="{{testUrl}}"></img>')($rootScope);
       $rootScope.testUrl = 'http://example.com/image.png';