Edit mode and cancel buttons work

platform/commonUI/browse/src/BrowseController.js

@@ -74,15 +74,17 @@ define(
             // Callback for updating the in-scope reference to the object
             // that is currently navigated-to.
             function setNavigation(domainObject) {
-                var navigatedDomainObject = domainObject;
-                
-                $scope.navigatedObject = navigatedDomainObject;
+
+                var wrappedObject = domainObject;
+
+                $scope.navigatedObject = wrappedObject;
                 $scope.treeModel.selectedObject = domainObject;
                 navigationService.setNavigation(domainObject);
                 updateRoute(domainObject);
             }
 
             function navigateTo(domainObject) {
+
                 // Check if an object has been navigated-to already...
                 // If not, or if an ID path has been explicitly set in the URL,
                 // navigate to the URL-specified object.
@@ -148,6 +150,16 @@ define(
                 selectedObject: navigationService.getNavigation()
             };
 
+            $scope.beforeUnloadWarning = function() {
+                var editorCapability = $scope.navigatedObject &&
+                        $scope.navigatedObject.getCapability("editor"),
+                    hasChanges = editorCapability && editorCapability.dirty();
+
+                return hasChanges ?
+                    "Unsaved changes will be lost if you leave this page." :
+                    undefined;
+            }
+
             // Listen for changes in navigation state.
             navigationService.addListener(setNavigation);
 
@@ -159,8 +171,6 @@ define(
                 navigationService.removeListener(setNavigation);
             });
             
-            $scope.editMode = false;
-            
         }
 
         return BrowseController;