feat(view): add imperative views

modules/angular2/angular2.js

@@ -4,3 +4,5 @@ export * from './annotations';
 export * from './directives';
 export * from './forms';
 export {Observable, EventEmitter} from 'angular2/src/facade/async';
+export * from 'angular2/src/render/api';
+export {DirectDomRenderer} from 'angular2/src/render/dom/direct_dom_renderer';

modules/angular2/src/core/annotations/view.js

@@ -71,19 +71,28 @@ export class View {
    */
   directives:any; //List<Type>;
 
+  /**
+   * Specify a custom renderer for this View.
+   * If this is set, neither `template`, `templateURL` nor `directives` are used.
+   */
+  renderer:any; // string;
+
   @CONST()
   constructor({
       templateUrl,
       template,
-      directives
+      directives,
+      renderer
     }: {
       templateUrl: string,
       template: string,
-      directives: List<Type>
+      directives: List<Type>,
+      renderer: string
     })
   {
     this.templateUrl = templateUrl;
     this.template = template;
     this.directives = directives;
+    this.renderer = renderer;
   }
 }

modules/angular2/src/core/application.js

@@ -75,7 +75,7 @@ function _injectorBindings(appComponentType): List<Binding> {
         // We need to do this here to ensure that we create Testability and
         // it's ready on the window for users.
         registry.registerApplication(appElement, testability);
-        return dynamicComponentLoader.loadIntoNewLocation(appElement, appComponentAnnotatedType.type, injector);
+        return dynamicComponentLoader.loadIntoNewLocation(appComponentAnnotatedType.type, null, appElement, injector);
       }, [DynamicComponentLoader, Injector, appElementToken, appComponentAnnotatedTypeToken,
         Testability, TestabilityRegistry]),
 
@@ -91,6 +91,7 @@ function _injectorBindings(appComponentType): List<Binding> {
       bind(ShadowDomStrategy).toFactory(
           (styleUrlResolver, doc) => new EmulatedUnscopedShadowDomStrategy(styleUrlResolver, doc.head),
           [StyleUrlResolver, appDocumentToken]),
+      DirectDomRenderer,
       bind(Renderer).toClass(DirectDomRenderer),
       bind(rc.Compiler).toClass(rc.DefaultCompiler),
       // TODO(tbosch): We need an explicit factory here, as
@@ -105,8 +106,8 @@ function _injectorBindings(appComponentType): List<Binding> {
       // TODO(tbosch): We need an explicit factory here, as
       // we are getting errors in dart2js with mirrors...
       bind(ViewFactory).toFactory(
-        (capacity, renderer, appViewHydrator) => new ViewFactory(capacity, renderer, appViewHydrator),
-        [VIEW_POOL_CAPACITY, Renderer, AppViewHydrator]
+        (capacity, renderer) => new ViewFactory(capacity, renderer),
+        [VIEW_POOL_CAPACITY, Renderer]
       ),
       bind(VIEW_POOL_CAPACITY).toValue(10000),
       AppViewHydrator,

modules/angular2/src/core/compiler/compiler.js

@@ -114,14 +114,21 @@ export class Compiler {
     }
 
     var template = this._templateResolver.resolve(component);
-    var directives = ListWrapper.map(
-      this._flattenDirectives(template),
-      (directive) => this._bindDirective(directive)
-    );
-    var renderTemplate = this._buildRenderTemplate(component, template, directives);
-    pvPromise = this._renderer.compile(renderTemplate).then( (renderPv) => {
-      return this._compileNestedProtoViews(componentBinding, renderPv, directives, true);
-    });
+    if (isPresent(template.renderer)) {
+      var directives = [];
+      pvPromise = this._renderer.createImperativeComponentProtoView(template.renderer).then( (renderPv) => {
+        return this._compileNestedProtoViews(componentBinding, renderPv, directives, true);
+      });
+    } else {
+      var directives = ListWrapper.map(
+        this._flattenDirectives(template),
+        (directive) => this._bindDirective(directive)
+      );
+      var renderTemplate = this._buildRenderTemplate(component, template, directives);
+      pvPromise = this._renderer.compile(renderTemplate).then( (renderPv) => {
+        return this._compileNestedProtoViews(componentBinding, renderPv, directives, true);
+      });
+    }
 
     MapWrapper.set(this._compiling, component, pvPromise);
     return pvPromise;

modules/angular2/src/core/compiler/dynamic_component_loader.js

@@ -70,15 +70,10 @@ export class DynamicComponentLoader {
 
     return this._compiler.compile(type).then(componentProtoView => {
       var componentView = this._viewFactory.getView(componentProtoView);
-      var hostView = location.hostView;
       this._viewHydrator.hydrateDynamicComponentView(
-        hostView, location.boundElementIndex, componentView, componentBinding, injector);
+        location, componentView, componentBinding, injector);
 
-      // TODO(vsavkin): return a component ref that dehydrates the component view and removes it
-      // from the component child views
-      // See ViewFactory.returnView
-      // See AppViewHydrator.dehydrateDynamicComponentView
-      var dispose = () => {throw "Not implemented";};
+      var dispose = () => {throw new BaseException("Not implemented");};
       return new ComponentRef(location, location.elementInjector.getDynamicallyLoadedComponent(), componentView, dispose);
     });
   }
@@ -87,19 +82,22 @@ export class DynamicComponentLoader {
    * Loads a component in the element specified by elementOrSelector. The loaded component receives
    * injection normally as a hosted view.
    */
-  loadIntoNewLocation(elementOrSelector:any, type:Type, injector:Injector = null):Promise<ComponentRef> {
+  loadIntoNewLocation(type:Type, parentComponentLocation:ElementRef, elementOrSelector:any,
+                      injector:Injector = null):Promise<ComponentRef> {
     this._assertTypeIsComponent(type);
 
     return  this._compiler.compileInHost(type).then(hostProtoView => {
       var hostView = this._viewFactory.getView(hostProtoView);
-      this._viewHydrator.hydrateInPlaceHostView(null, elementOrSelector, hostView, injector);
+      this._viewHydrator.hydrateInPlaceHostView(
+        parentComponentLocation, elementOrSelector, hostView, injector
+      );
 
-      // TODO(vsavkin): return a component ref that dehydrates the host view
-      // See ViewFactory.returnView
-      // See AppViewHydrator.dehydrateInPlaceHostView
       var newLocation = hostView.elementInjectors[0].getElementRef();
       var component = hostView.elementInjectors[0].getComponent();
-      var dispose = () => {throw "Not implemented";};
+      var dispose = () => {
+        this._viewHydrator.dehydrateInPlaceHostView(parentComponentLocation, hostView);
+        this._viewFactory.returnView(hostView);
+      };
       return new ComponentRef(newLocation, component, hostView.componentChildViews[0], dispose);
     });
   }

modules/angular2/src/core/compiler/element_injector.js

@@ -26,27 +26,21 @@ var _staticKeys;
  * @exportedAs angular2/view
  */
 export class ElementRef {
+  hostView:viewModule.AppView;
+  boundElementIndex:number;
+  injector:Injector;
   elementInjector:ElementInjector;
 
-  constructor(elementInjector:ElementInjector){
+  constructor(elementInjector, hostView, boundElementIndex, injector){
     this.elementInjector = elementInjector;
-  }
-
-  get hostView() {
-    return this.elementInjector._preBuiltObjects.view;
+    this.hostView = hostView;
+    this.boundElementIndex = boundElementIndex;
+    this.injector = injector;
   }
 
   get viewContainer() {
     return this.hostView.getOrCreateViewContainer(this.boundElementIndex);
   }
-
-  get injector() {
-    return this.elementInjector._lightDomAppInjector;
-  }
-
-  get boundElementIndex() {
-    return this.elementInjector._proto.index;
-  }
 }
 
 class StaticKeys {
@@ -673,7 +667,7 @@ export class ElementInjector extends TreeNode {
   }
 
   getElementRef() {
-    return new ElementRef(this);
+    return new ElementRef(this, this._preBuiltObjects.view, this._proto.index, this._lightDomAppInjector);
   }
 
   getDynamicallyLoadedComponent() {

modules/angular2/src/core/compiler/view.js

@@ -25,6 +25,9 @@ export class AppView {
   elementInjectors:List<ElementInjector>;
   changeDetector:ChangeDetector;
   componentChildViews: List<AppView>;
+  /// Host views that were added by an imperative view.
+  /// This is a dynamically growing / shrinking array.
+  imperativeHostViews: List<AppView>;
   viewContainers: List<ViewContainer>;
   preBuiltObjects: List<PreBuiltObjects>;
   proto: AppProtoView;
@@ -46,7 +49,7 @@ export class AppView {
    */
   locals:Locals;
 
-  constructor(renderer:renderApi.Renderer, viewFactory:vfModule.ViewFactory, viewHydrator:vhModule.AppViewHydrator, proto:AppProtoView, protoLocals:Map) {
+  constructor(renderer:renderApi.Renderer, viewFactory:vfModule.ViewFactory, proto:AppProtoView, protoLocals:Map) {
     this.render = null;
     this.proto = proto;
     this.changeDetector = null;
@@ -59,7 +62,8 @@ export class AppView {
     this.locals = new Locals(null, MapWrapper.clone(protoLocals)); //TODO optimize this
     this.renderer = renderer;
     this.viewFactory = viewFactory;
-    this.viewHydrator = viewHydrator;
+    this.viewHydrator = null;
+    this.imperativeHostViews = [];
   }
 
   init(changeDetector:ChangeDetector, elementInjectors:List, rootElementInjectors:List,

modules/angular2/src/core/compiler/view_factory.js

@@ -5,7 +5,6 @@ import {isPresent, isBlank, BaseException} from 'angular2/src/facade/lang';
 import {NgElement} from 'angular2/src/core/compiler/ng_element';
 import * as viewModule from './view';
 import {Renderer} from 'angular2/src/render/api';
-import {AppViewHydrator} from './view_hydrator';
 
 // TODO(tbosch): Make this an OpaqueToken as soon as our transpiler supports this!
 export const VIEW_POOL_CAPACITY = 'ViewFactory.viewPoolCapacity';
@@ -15,13 +14,11 @@ export class ViewFactory {
   _poolCapacityPerProtoView:number;
   _pooledViewsPerProtoView:Map<viewModule.AppProtoView, List<viewModule.AppView>>;
   _renderer:Renderer;
-  _viewHydrator:AppViewHydrator;
 
-  constructor(@Inject(VIEW_POOL_CAPACITY) poolCapacityPerProtoView, renderer:Renderer, viewHydrator:AppViewHydrator) {
+  constructor(@Inject(VIEW_POOL_CAPACITY) poolCapacityPerProtoView, renderer:Renderer) {
     this._poolCapacityPerProtoView = poolCapacityPerProtoView;
     this._pooledViewsPerProtoView = MapWrapper.create();
     this._renderer = renderer;
-    this._viewHydrator = viewHydrator;
   }
 
   getView(protoView:viewModule.AppProtoView):viewModule.AppView {
@@ -48,7 +45,7 @@ export class ViewFactory {
   }
 
   _createView(protoView:viewModule.AppProtoView): viewModule.AppView {
-    var view = new viewModule.AppView(this._renderer, this, this._viewHydrator, protoView, protoView.protoLocals);
+    var view = new viewModule.AppView(this._renderer, this, protoView, protoView.protoLocals);
     var changeDetector = protoView.protoChangeDetector.instantiate(view, protoView.bindings,
       protoView.getVariableBindings(), protoView.getdirectiveRecords());
 

modules/angular2/src/core/compiler/view_hydrator.js

@@ -7,6 +7,7 @@ import * as viewModule from './view';
 import {BindingPropagationConfig, Locals} from 'angular2/change_detection';
 
 import * as renderApi from 'angular2/src/render/api';
+import {ViewFactory} from 'angular2/src/core/compiler/view_factory';
 
 /**
  * A dehydrated view is a state of the view that allows it to be moved around
@@ -27,13 +28,17 @@ import * as renderApi from 'angular2/src/render/api';
 @Injectable()
 export class AppViewHydrator {
   _renderer:renderApi.Renderer;
+  _viewFactory:ViewFactory;
 
-  constructor(renderer:renderApi.Renderer) {
+  constructor(renderer:renderApi.Renderer, viewFactory:ViewFactory) {
     this._renderer = renderer;
+    this._viewFactory = viewFactory;
   }
 
-  hydrateDynamicComponentView(hostView:viewModule.AppView, boundElementIndex:number,
+  hydrateDynamicComponentView(location:eli.ElementRef,
       componentView:viewModule.AppView, componentDirective:eli.DirectiveBinding, injector:Injector) {
+    var hostView = location.hostView;
+    var boundElementIndex = location.boundElementIndex;
     var binder = hostView.proto.elementBinders[boundElementIndex];
     if (!binder.hasDynamicComponent()) {
       throw new BaseException(`There is no dynamic component directive at element ${boundElementIndex}`);
@@ -84,16 +89,23 @@ export class AppViewHydrator {
     // parentView.componentChildViews[boundElementIndex] = null;
   }
 
-  hydrateInPlaceHostView(parentView:viewModule.AppView, hostElementSelector, hostView:viewModule.AppView, injector:Injector) {
+  hydrateInPlaceHostView(parentComponentLocation:eli.ElementRef,
+      hostElementSelector, hostView:viewModule.AppView, injector:Injector) {
     var parentRenderViewRef = null;
-    if (isPresent(parentView)) {
-      // Needed for user views
-      throw new BaseException('Not yet supported');
+    if (isPresent(parentComponentLocation)) {
+      var parentView = parentComponentLocation.hostView.componentChildViews[parentComponentLocation.boundElementIndex];
+      parentRenderViewRef = parentView.render;
+      parentView.changeDetector.addChild(hostView.changeDetector);
+      ListWrapper.push(parentView.imperativeHostViews, hostView);
+
+      if (isBlank(injector)) {
+        injector = parentComponentLocation.injector;
+      }
     }
+
     var binder = hostView.proto.elementBinders[0];
     var shadowDomAppInjector = this._createShadowDomAppInjector(binder.componentDirective, injector);
 
-    // render views
     var renderViewRefs = this._renderer.createInPlaceHostView(parentRenderViewRef, hostElementSelector, hostView.proto.render);
 
     this._viewHydrateRecurse(
@@ -101,11 +113,13 @@ export class AppViewHydrator {
     );
   }
 
-  dehydrateInPlaceHostView(parentView:viewModule.AppView, hostView:viewModule.AppView) {
+  dehydrateInPlaceHostView(parentComponentLocation:eli.ElementRef, hostView:viewModule.AppView) {
     var parentRenderViewRef = null;
-    if (isPresent(parentView)) {
-      // Needed for user views
-      throw new BaseException('Not yet supported');
+    if (isPresent(parentComponentLocation)) {
+      var parentView = parentComponentLocation.hostView.componentChildViews[parentComponentLocation.boundElementIndex];
+      parentRenderViewRef = parentView.render;
+      ListWrapper.remove(parentView.imperativeHostViews, hostView);
+      parentView.changeDetector.removeChild(hostView.changeDetector);
     }
     var render = hostView.render;
     this._viewDehydrateRecurse(hostView);
@@ -137,7 +151,7 @@ export class AppViewHydrator {
       appInjector: Injector, hostElementInjector: eli.ElementInjector,
       context: Object, locals:Locals):number {
     if (view.hydrated()) throw new BaseException('The view is already hydrated.');
-
+    view.viewHydrator = this;
     view.render = renderComponentViewRefs[renderComponentIndex++];
 
     view.context = context;
@@ -215,12 +229,22 @@ export class AppViewHydrator {
         this._viewDehydrateRecurse(componentView);
         var binder = view.proto.elementBinders[i];
         if (binder.hasDynamicComponent()) {
-          view.componentChildViews[i] = null;
           view.changeDetector.removeShadowDomChild(componentView.changeDetector);
+          view.componentChildViews[i] = null;
+          this._viewFactory.returnView(componentView);
         }
       }
     }
 
+    // imperativeHostViews
+    for (var i = 0; i < view.imperativeHostViews.length; i++) {
+      var hostView = view.imperativeHostViews[i];
+      this._viewDehydrateRecurse(hostView);
+      view.changeDetector.removeChild(hostView.changeDetector);
+      this._viewFactory.returnView(hostView);
+    }
+    view.imperativeHostViews = [];
+
     // elementInjectors
     for (var i = 0; i < view.elementInjectors.length; i++) {
       if (isPresent(view.elementInjectors[i])) {

modules/angular2/src/dom/browser_adapter.dart

@@ -151,7 +151,7 @@ class BrowserDomAdapter extends GenericBrowserDomAdapter {
   void appendChild(Node el, Node node) {
     el.append(node);
   }
-  void removeChild(Element el, Node node) {
+  void removeChild(el, Node node) {
     node.remove();
   }
   void replaceChild(Node el, Node newNode, Node oldNode) {

modules/angular2/src/render/api.js

@@ -165,6 +165,14 @@ export class Renderer {
    */
   createHostProtoView(componentId):Promise<ProtoViewDto> { return null; }
 
+  /**
+   * Creats a ProtoViewDto for a component that will use an imperative View using the given
+   * renderer.
+   * Note: Rigth now, the renderer argument is ignored, but will be used in the future to define
+   * a custom handler.
+   */
+  createImperativeComponentProtoView(rendererId):Promise<ProtoViewDto> { return null; }
+
   /**
    * Compiles a single RenderProtoView. Non recursive so that
    * we don't need to serialize all possible components over the wire,

modules/angular2/src/render/dom/direct_dom_renderer.js

@@ -12,6 +12,7 @@ import {Compiler} from './compiler/compiler';
 import {ShadowDomStrategy} from './shadow_dom/shadow_dom_strategy';
 import {ProtoViewBuilder} from './view/proto_view_builder';
 import {DOM} from 'angular2/src/dom/dom_adapter';
+import {ViewContainer} from './view/view_container';
 
 function _resolveViewContainer(vc:api.ViewContainerRef) {
   return _resolveView(vc.view).getOrCreateViewContainer(vc.elementIndex);
@@ -90,6 +91,12 @@ export class DirectDomRenderer extends api.Renderer {
     return PromiseWrapper.resolve(hostProtoViewBuilder.build());
   }
 
+  createImperativeComponentProtoView(rendererId):Promise<api.ProtoViewDto> {
+    var protoViewBuilder = new ProtoViewBuilder(null);
+    protoViewBuilder.setImperativeRendererId(rendererId);
+    return PromiseWrapper.resolve(protoViewBuilder.build());
+  }
+
   compile(template:api.ViewDefinition):Promise<api.ProtoViewDto> {
     // Note: compiler already uses a DirectDomProtoViewRef, so we don't
     // need to do anything here
@@ -156,6 +163,21 @@ export class DirectDomRenderer extends api.Renderer {
     this._viewHydrator.dehydrateInPlaceHostView(parentView, hostView);
   }
 
+  setImperativeComponentRootNodes(parentViewRef:api.ViewRef, elementIndex:number, nodes:List):void {
+    var parentView = _resolveView(parentViewRef);
+    var hostElement = parentView.boundElements[elementIndex];
+    var componentView = parentView.componentChildViews[elementIndex];
+    if (isBlank(componentView)) {
+      throw new BaseException(`There is no componentChildView at index ${elementIndex}`);
+    }
+    if (isBlank(componentView.proto.imperativeRendererId)) {
+      throw new BaseException(`This component view has no imperative renderer`);
+    }
+    ViewContainer.removeViewNodes(componentView);
+    componentView.rootNodes = nodes;
+    this._shadowDomStrategy.attachTemplate(hostElement, componentView);
+  }
+
   setElementProperty(viewRef:api.ViewRef, elementIndex:number, propertyName:string, propertyValue:any):void {
     _resolveView(viewRef).setElementProperty(elementIndex, propertyName, propertyValue);
   }

modules/angular2/src/render/dom/view/proto_view.js

@@ -11,15 +11,23 @@ export class RenderProtoView {
   elementBinders:List<ElementBinder>;
   isTemplateElement:boolean;
   rootBindingOffset:int;
+  imperativeRendererId:string;
 
   constructor({
     elementBinders,
-    element
+    element,
+    imperativeRendererId
   }) {
     this.element = element;
     this.elementBinders = elementBinders;
-    this.isTemplateElement = DOM.isTemplateElement(this.element);
-    this.rootBindingOffset = (isPresent(this.element) && DOM.hasClass(this.element, NG_BINDING_CLASS)) ? 1 : 0;
+    this.imperativeRendererId = imperativeRendererId;
+    if (isPresent(imperativeRendererId)) {
+      this.rootBindingOffset = 0;
+      this.isTemplateElement = false;
+    } else {
+      this.isTemplateElement = DOM.isTemplateElement(this.element);
+      this.rootBindingOffset = (isPresent(this.element) && DOM.hasClass(this.element, NG_BINDING_CLASS)) ? 1 : 0;
+    }
   }
 
   mergeChildComponentProtoViews(componentProtoViews:List<RenderProtoView>) {

modules/angular2/src/render/dom/view/proto_view_builder.js

@@ -20,12 +20,18 @@ export class ProtoViewBuilder {
   rootElement;
   variableBindings: Map<string, string>;
   elements:List<ElementBinderBuilder>;
-  isRootView:boolean;
+  imperativeRendererId:string;
 
   constructor(rootElement) {
     this.rootElement = rootElement;
     this.elements = [];
     this.variableBindings = MapWrapper.create();
+    this.imperativeRendererId = null;
+  }
+
+  setImperativeRendererId(id:string):ProtoViewBuilder {
+    this.imperativeRendererId = id;
+    return this;
   }
 
   bindElement(element, description = null):ElementBinderBuilder {
@@ -90,7 +96,8 @@ export class ProtoViewBuilder {
     return new api.ProtoViewDto({
       render: new directDomRenderer.DirectDomProtoViewRef(new RenderProtoView({
         element: this.rootElement,
-        elementBinders: renderElementBinders
+        elementBinders: renderElementBinders,
+        imperativeRendererId: this.imperativeRendererId
       })),
       elementBinders: apiElementBinders,
       variableBindings: this.variableBindings

modules/angular2/src/render/dom/view/view.js

@@ -31,6 +31,9 @@ export class RenderView {
   hydrated: boolean;
   _eventDispatcher: any/*EventDispatcher*/;
   eventHandlerRemovers: List<Function>;
+  /// Host views that were added by an imperative view.
+  /// This is a dynamically growing / shrinking array.
+  imperativeHostViews: List<RenderView>;
 
   constructor(
       proto:RenderProtoView, rootNodes:List,
@@ -46,7 +49,8 @@ export class RenderView {
     this.componentChildViews = ListWrapper.createFixedSize(boundElements.length);
     this.hostLightDom = null;
     this.hydrated = false;
-    this.eventHandlerRemovers = null;
+    this.eventHandlerRemovers = [];
+    this.imperativeHostViews = [];
   }
 
   getDirectParentLightDom(boundElementIndex:number) {

modules/angular2/src/render/dom/view/view_factory.js

@@ -58,6 +58,12 @@ export class ViewFactory {
   }
 
   _createView(protoView:pvModule.RenderProtoView, inplaceElement): viewModule.RenderView {
+    if (isPresent(protoView.imperativeRendererId)) {
+      return new viewModule.RenderView(
+        protoView, [], [], [], []
+      );
+    }
+
     var rootElementClone = isPresent(inplaceElement) ? inplaceElement : DOM.importIntoDoc(protoView.element);
     var elementsWithBindingsDynamic;
     if (protoView.isTemplateElement) {
@@ -125,7 +131,7 @@ export class ViewFactory {
       // static child components
       if (binder.hasStaticComponent()) {
         var childView = this._createView(binder.nestedProtoView, null);
-        this.setComponentView(view, binderIdx, childView);
+        ViewFactory.setComponentView(this._shadowDomStrategy, view, binderIdx, childView);
       }
 
       // events
@@ -148,10 +154,10 @@ export class ViewFactory {
   // This method is used by the ViewFactory and the ViewHydrator
   // TODO(tbosch): change shadow dom emulation so that LightDom
   // instances don't need to be recreated by instead hydrated/dehydrated
-  setComponentView(hostView:viewModule.RenderView, elementIndex:number, componentView:viewModule.RenderView) {
+  static setComponentView(shadowDomStrategy:ShadowDomStrategy, hostView:viewModule.RenderView, elementIndex:number, componentView:viewModule.RenderView) {
     var element = hostView.boundElements[elementIndex];
-    var lightDom = this._shadowDomStrategy.constructLightDom(hostView, componentView, element);
-    this._shadowDomStrategy.attachTemplate(element, componentView);
+    var lightDom = shadowDomStrategy.constructLightDom(hostView, componentView, element);
+    shadowDomStrategy.attachTemplate(element, componentView);
     hostView.lightDoms[elementIndex] = lightDom;
     hostView.componentChildViews[elementIndex] = componentView;
   }

modules/angular2/src/render/dom/view/view_hydrator.js

@@ -7,6 +7,7 @@ import {EventManager} from '../events/event_manager';
 import {ViewFactory} from './view_factory';
 import * as vcModule from './view_container';
 import * as viewModule from './view';
+import {ShadowDomStrategy} from '../shadow_dom/shadow_dom_strategy';
 
 /**
  * A dehydrated view is a state of the view that allows it to be moved around
@@ -23,14 +24,16 @@ import * as viewModule from './view';
 export class RenderViewHydrator {
   _eventManager:EventManager;
   _viewFactory:ViewFactory;
+  _shadowDomStrategy:ShadowDomStrategy;
 
-  constructor(eventManager:EventManager, viewFactory:ViewFactory) {
+  constructor(eventManager:EventManager, viewFactory:ViewFactory, shadowDomStrategy:ShadowDomStrategy) {
     this._eventManager = eventManager;
     this._viewFactory = viewFactory;
+    this._shadowDomStrategy = shadowDomStrategy;
   }
 
   hydrateDynamicComponentView(hostView:viewModule.RenderView, boundElementIndex:number, componentView:viewModule.RenderView) {
-    this._viewFactory.setComponentView(hostView, boundElementIndex, componentView);
+    ViewFactory.setComponentView(this._shadowDomStrategy, hostView, boundElementIndex, componentView);
     var lightDom = hostView.lightDoms[boundElementIndex];
     this._viewHydrateRecurse(componentView, lightDom);
     if (isPresent(lightDom)) {
@@ -50,15 +53,17 @@ export class RenderViewHydrator {
 
   hydrateInPlaceHostView(parentView:viewModule.RenderView, hostView:viewModule.RenderView) {
     if (isPresent(parentView)) {
-      throw new BaseException('Not supported yet');
+      ListWrapper.push(parentView.imperativeHostViews, hostView);
     }
     this._viewHydrateRecurse(hostView, null);
   }
 
   dehydrateInPlaceHostView(parentView:viewModule.RenderView, hostView:viewModule.RenderView) {
     if (isPresent(parentView)) {
-      throw new BaseException('Not supported yet');
+      ListWrapper.remove(parentView.imperativeHostViews, hostView);
     }
+    vcModule.ViewContainer.removeViewNodes(hostView);
+    hostView.rootNodes = [];
     this._viewDehydrateRecurse(hostView);
   }
 
@@ -130,12 +135,24 @@ export class RenderViewHydrator {
         this._viewDehydrateRecurse(cv);
         if (view.proto.elementBinders[i].hasDynamicComponent()) {
           vcModule.ViewContainer.removeViewNodes(cv);
+          this._viewFactory.returnView(cv);
           view.lightDoms[i] = null;
           view.componentChildViews[i] = null;
         }
       }
     }
 
+    // imperativeHostViews
+    for (var i = 0; i < view.imperativeHostViews.length; i++) {
+      var hostView = view.imperativeHostViews[i];
+      this._viewDehydrateRecurse(hostView);
+      vcModule.ViewContainer.removeViewNodes(hostView);
+      hostView.rootNodes = [];
+      this._viewFactory.returnView(hostView);
+    }
+    view.imperativeHostViews = [];
+
+
     // viewContainers and content tags
     if (isPresent(view.viewContainers)) {
       for (var i = 0; i < view.viewContainers.length; i++) {

modules/angular2/src/test_lib/test_injector.js

@@ -79,6 +79,7 @@ function _getAppBindings() {
     bind(ShadowDomStrategy).toFactory(
         (styleUrlResolver, doc) => new EmulatedUnscopedShadowDomStrategy(styleUrlResolver, doc.head),
         [StyleUrlResolver, appDocumentToken]),
+    bind(DirectDomRenderer).toClass(DirectDomRenderer),
     bind(Renderer).toClass(DirectDomRenderer),
     bind(rc.Compiler).toClass(rc.DefaultCompiler),
     rvf.ViewFactory,

modules/angular2/test/core/compiler/compiler_spec.js

@@ -10,10 +10,11 @@ import {
   inject,
   IS_DARTIUM,
   it,
+  SpyObject, proxy
 } from 'angular2/test_lib';
 
 import {List, ListWrapper, Map, MapWrapper, StringMapWrapper} from 'angular2/src/facade/collection';
-import {Type, isBlank, stringify, isPresent} from 'angular2/src/facade/lang';
+import {IMPLEMENTS, Type, isBlank, stringify, isPresent} from 'angular2/src/facade/lang';
 import {PromiseWrapper, Promise} from 'angular2/src/facade/async';
 
 import {Compiler, CompilerCache} from 'angular2/src/core/compiler/compiler';
@@ -30,20 +31,28 @@ import {ProtoViewFactory} from 'angular2/src/core/compiler/proto_view_factory';
 
 import {UrlResolver} from 'angular2/src/services/url_resolver';
 import * as renderApi from 'angular2/src/render/api';
+// TODO(tbosch): Spys don't support named modules...
+import {Renderer} from 'angular2/src/render/api';
 
 export function main() {
   describe('compiler', function() {
-    var reader, tplResolver, renderer, protoViewFactory, cmpUrlMapper;
+    var reader, tplResolver, renderer, protoViewFactory, cmpUrlMapper, renderCompileRequests;
 
     beforeEach(() => {
       reader = new DirectiveMetadataReader();
       tplResolver = new FakeTemplateResolver();
       cmpUrlMapper = new RuntimeComponentUrlMapper();
+      renderer = new SpyRenderer();
     });
 
     function createCompiler(renderCompileResults:List, protoViewFactoryResults:List<AppProtoView>) {
       var urlResolver = new FakeUrlResolver();
-      renderer = new FakeRenderer(renderCompileResults);
+      renderCompileRequests = [];
+      renderer.spy('compile').andCallFake( (template) => {
+        ListWrapper.push(renderCompileRequests, template);
+        return PromiseWrapper.resolve(ListWrapper.removeAt(renderCompileResults, 0));
+      });
+
       protoViewFactory = new FakeProtoViewFactory(protoViewFactoryResults)
       return new Compiler(
         reader,
@@ -62,8 +71,8 @@ export function main() {
         tplResolver.setView(MainComponent, template);
         var compiler = createCompiler([createRenderProtoView()], [createProtoView()]);
         return compiler.compile(MainComponent).then( (protoView) => {
-          expect(renderer.requests.length).toBe(1);
-          return renderer.requests[0];
+          expect(renderCompileRequests.length).toBe(1);
+          return renderCompileRequests[0];
         });
       }
 
@@ -362,6 +371,11 @@ export function main() {
     }));
 
     it('should create host proto views', inject([AsyncTestCompleter], (async) => {
+      renderer.spy('createHostProtoView').andCallFake( (componentId) => {
+        return PromiseWrapper.resolve(
+          createRenderProtoView([createRenderComponentElementBinder(0)])
+        );
+      });
       tplResolver.setView(MainComponent, new View({template: '<div></div>'}));
       var rootProtoView = createProtoView([
         createComponentElementBinder(reader, MainComponent)
@@ -379,6 +393,25 @@ export function main() {
         async.done();
       });
     }));
+
+    it('should create imperative proto views', inject([AsyncTestCompleter], (async) => {
+      renderer.spy('createImperativeComponentProtoView').andCallFake( (rendererId) => {
+        return PromiseWrapper.resolve(
+          createRenderProtoView([])
+        );
+      });
+      tplResolver.setView(MainComponent, new View({renderer: 'some-renderer'}));
+      var mainProtoView = createProtoView();
+      var compiler = createCompiler(
+        [],
+        [mainProtoView]
+      );
+      compiler.compile(MainComponent).then( (protoView) => {
+        expect(protoView).toBe(mainProtoView);
+        expect(renderer.spy('createImperativeComponentProtoView')).toHaveBeenCalledWith('some-renderer');
+        async.done();
+      });
+    }));
   });
 }
 
@@ -482,26 +515,11 @@ class DirectiveWithAttributes {
   constructor(@Attribute('someAttr') someAttr:string) {}
 }
 
-class FakeRenderer extends renderApi.Renderer {
-  requests:List<renderApi.ViewDefinition>;
-  _results:List;
-
-  constructor(results) {
-    super();
-    this._results = results;
-    this.requests = [];
-  }
-
-  compile(template:renderApi.ViewDefinition):Promise<renderApi.ProtoViewDto> {
-    ListWrapper.push(this.requests, template);
-    return PromiseWrapper.resolve(ListWrapper.removeAt(this._results, 0));
-  }
-
-  createHostProtoView(componentId):Promise<renderApi.ProtoViewDto> {
-    return PromiseWrapper.resolve(
-      createRenderProtoView([createRenderComponentElementBinder(0)])
-    );
-  }
+@proxy
+@IMPLEMENTS(Renderer)
+class SpyRenderer extends SpyObject {
+  constructor(){super(Renderer);}
+  noSuchMethod(m){return super.noSuchMethod(m)}
 }
 
 class FakeUrlResolver extends UrlResolver {

modules/angular2/test/core/compiler/dynamic_component_loader_spec.js

@@ -21,6 +21,7 @@ import {View} from 'angular2/src/core/annotations/view';
 import {DynamicComponentLoader} from 'angular2/src/core/compiler/dynamic_component_loader';
 import {ElementRef} from 'angular2/src/core/compiler/element_injector';
 import {If} from 'angular2/src/directives/if';
+import {DirectDomRenderer} from 'angular2/src/render/dom/direct_dom_renderer';
 
 export function main() {
   describe('DynamicComponentLoader', function () {
@@ -134,9 +135,71 @@ export function main() {
           });
         }));
     });
+
+    describe('loading into a new location', () => {
+      it('should allow to create, update and destroy components',
+          inject([TestBed, AsyncTestCompleter], (tb, async) => {
+        tb.overrideView(MyComp, new View({
+          template: '<imp-ng-cmp #impview></imp-ng-cmp>',
+          directives: [ImperativeViewComponentUsingNgComponent]
+        }));
+        tb.createView(MyComp).then((view) => {
+          var userViewComponent = view.rawView.locals.get("impview");
+
+          userViewComponent.done.then((childComponentRef) => {
+            view.detectChanges();
+
+            expect(view.rootNodes).toHaveText('hello');
+
+            childComponentRef.instance.ctxProp = 'new';
+
+            view.detectChanges();
+
+            expect(view.rootNodes).toHaveText('new');
+
+            childComponentRef.dispose();
+
+            expect(view.rootNodes).toHaveText('');
+
+            async.done();
+          });
+        });
+      }));
+
+    });
+
   });
 }
 
+@Component({
+  selector: 'imp-ng-cmp'
+})
+@View({
+  renderer: 'imp-ng-cmp-renderer'
+})
+class ImperativeViewComponentUsingNgComponent {
+  done;
+
+  constructor(self:ElementRef, dynamicComponentLoader:DynamicComponentLoader, renderer:DirectDomRenderer) {
+    var div = el('<div></div>');
+    renderer.setImperativeComponentRootNodes(self.hostView.render, self.boundElementIndex, [div]);
+    this.done = dynamicComponentLoader.loadIntoNewLocation(ChildComp, self, div, null);
+  }
+}
+
+@Component({
+  selector: 'child-cmp',
+})
+@View({
+  template: '{{ctxProp}}'
+})
+class ChildComp {
+  ctxProp:string;
+  constructor() {
+    this.ctxProp = 'hello';
+  }
+}
+
 
 class DynamicallyCreatedComponentService {
 }

modules/angular2/test/core/compiler/element_injector_spec.js

@@ -714,7 +714,7 @@ export function main() {
       beforeEach( () => {
         renderer = new FakeRenderer();
         var protoView = new AppProtoView(null, null);
-        view = new AppView(renderer, null, null, protoView, MapWrapper.create());
+        view = new AppView(renderer, null, protoView, MapWrapper.create());
         view.render = new ViewRef();
       });
 

modules/angular2/test/core/compiler/integration_spec.js

@@ -33,6 +33,9 @@ import {If} from 'angular2/src/directives/if';
 
 import {ViewContainer} from 'angular2/src/core/compiler/view_container';
 import {Compiler} from 'angular2/src/core/compiler/compiler';
+import {ElementRef} from 'angular2/src/core/compiler/element_injector';
+
+import {DirectDomRenderer} from 'angular2/src/render/dom/direct_dom_renderer';
 
 export function main() {
   describe('integration tests', function() {
@@ -722,6 +725,18 @@ export function main() {
       }));
     });
 
+    it('should support imperative views',
+        inject([TestBed, AsyncTestCompleter], (tb, async) => {
+      tb.overrideView(MyComp, new View({
+        template: '<simple-imp-cmp></simple-imp-cmp>',
+        directives: [SimpleImperativeViewComponent]
+      }));
+      tb.createView(MyComp).then((view) => {
+        expect(view.rootNodes).toHaveText('hello imp view');
+        async.done();
+      });
+    }));
+
     // Disabled until a solution is found, refs:
     // - https://github.com/angular/angular/issues/776
     // - https://github.com/angular/angular/commit/81f3f32
@@ -783,6 +798,21 @@ export function main() {
   });
 }
 
+@Component({
+  selector: 'simple-imp-cmp'
+})
+@View({
+  renderer: 'simple-imp-cmp-renderer'
+})
+class SimpleImperativeViewComponent {
+  done;
+
+  constructor(self:ElementRef, renderer:DirectDomRenderer) {
+    renderer.setImperativeComponentRootNodes(self.hostView.render, self.boundElementIndex, [el('hello imp view')]);
+  }
+}
+
+
 @Decorator({
   selector: 'dynamic-vp'
 })
@@ -888,7 +918,7 @@ class ComponentWithPipes {
 
 @Component({
   selector: 'child-cmp',
-  injectables: [MyService]
+  injectables: [MyService],
 })
 @View({
   directives: [MyDir],

modules/angular2/test/core/compiler/view_factory_spec.js

@@ -35,7 +35,7 @@ export function main() {
     });
 
     function createViewFactory({capacity}):ViewFactory {
-      return new ViewFactory(capacity, renderer, null);
+      return new ViewFactory(capacity, renderer);
     }
 
     function createProtoChangeDetector() {

modules/angular2/test/core/compiler/view_hydrator_spec.js

@@ -21,21 +21,24 @@ import {AppProtoView, AppView} from 'angular2/src/core/compiler/view';
 import {Renderer, ViewRef} from 'angular2/src/render/api';
 import {ChangeDetector} from 'angular2/change_detection';
 import {ElementBinder} from 'angular2/src/core/compiler/element_binder';
-import {DirectiveBinding, ElementInjector} from 'angular2/src/core/compiler/element_injector';
+import {DirectiveBinding, ElementInjector, ElementRef} from 'angular2/src/core/compiler/element_injector';
 import {DirectiveMetadataReader} from 'angular2/src/core/compiler/directive_metadata_reader';
 import {Component} from 'angular2/src/core/annotations/annotations';
 import {AppViewHydrator} from 'angular2/src/core/compiler/view_hydrator';
+import {ViewFactory} from 'angular2/src/core/compiler/view_factory';
 
 export function main() {
   describe('AppViewHydrator', () => {
     var renderer;
     var reader;
     var hydrator;
+    var viewFactory;
 
     beforeEach( () => {
       renderer = new SpyRenderer();
       reader = new DirectiveMetadataReader();
-      hydrator = new AppViewHydrator(renderer);
+      viewFactory = new SpyViewFactory();
+      hydrator = new AppViewHydrator(renderer, viewFactory);
     });
 
     function createDirectiveBinding(type) {
@@ -81,14 +84,14 @@ export function main() {
     }
 
     function createEmptyView() {
-      var view = new AppView(renderer, null, null, createProtoView(), MapWrapper.create());
+      var view = new AppView(renderer, null, createProtoView(), MapWrapper.create());
       var changeDetector = new SpyChangeDetector();
       view.init(changeDetector, [], [], [], []);
       return view;
     }
 
     function createHostView(pv, shadowView, componentInstance, elementInjectors = null) {
-      var view = new AppView(renderer, null, null, pv, MapWrapper.create());
+      var view = new AppView(renderer, null, pv, MapWrapper.create());
       var changeDetector = new SpyChangeDetector();
 
       var eis;
@@ -117,7 +120,7 @@ export function main() {
         var view = createHostView(pv, null, null);
         var shadowView = createEmptyView();
         expect(
-          () => hydrator.hydrateDynamicComponentView(view, 0, shadowView, null, null)
+          () => hydrator.hydrateDynamicComponentView(new ElementRef(null, view, 0, null), shadowView, null, null)
         ).toThrowError('There is no dynamic component directive at element 0');
       });
 
@@ -126,7 +129,7 @@ export function main() {
         var view = createHostView(pv, null, null);
         var shadowView = createEmptyView();
         expect(
-          () => hydrator.hydrateDynamicComponentView(view, 0, shadowView, null, null)
+          () => hydrator.hydrateDynamicComponentView(new ElementRef(null, view, 0, null), shadowView, null, null)
         ).toThrowError('There is no dynamic component directive at element 0');
       });
 
@@ -135,9 +138,10 @@ export function main() {
         var shadowView = createEmptyView();
         var view = createHostView(pv, null, null);
         renderer.spy('createDynamicComponentView').andReturn([new ViewRef(), new ViewRef()]);
-        hydrator.hydrateDynamicComponentView(view, 0, shadowView, createDirectiveBinding(SomeComponent), null);
+        var elRef = new ElementRef(null, view, 0, null);
+        hydrator.hydrateDynamicComponentView(elRef, shadowView, createDirectiveBinding(SomeComponent), null);
         expect(
-          () => hydrator.hydrateDynamicComponentView(view, 0, shadowView, null, null)
+          () => hydrator.hydrateDynamicComponentView(elRef, shadowView, null, null)
         ).toThrowError('There already is a bound component at element 0');
       });
 
@@ -217,6 +221,7 @@ export function main() {
 
         expect(hostView.componentChildViews[0]).toBe(shadowView);
         expect(hostView.changeDetector.spy('removeShadowDomChild')).not.toHaveBeenCalled();
+        expect(viewFactory.spy('returnView')).not.toHaveBeenCalled();
       });
 
       it('should clear dynamic child components', () => {
@@ -225,6 +230,19 @@ export function main() {
 
         expect(hostView.componentChildViews[0]).toBe(null);
         expect(hostView.changeDetector.spy('removeShadowDomChild')).toHaveBeenCalledWith(shadowView.changeDetector);
+        expect(viewFactory.spy('returnView')).toHaveBeenCalledWith(shadowView);
+      });
+
+      it('should clear imperatively added child components', () => {
+        createAndHydrate(createProtoView());
+        var impHostView = createHostView(createHostProtoView(createProtoView()), createEmptyView(), null);
+        shadowView.imperativeHostViews = [impHostView];
+
+        dehydrate(hostView);
+
+        expect(shadowView.imperativeHostViews).toEqual([]);
+        expect(viewFactory.spy('returnView')).toHaveBeenCalledWith(impHostView);
+        expect(shadowView.changeDetector.spy('removeChild')).toHaveBeenCalledWith(impHostView.changeDetector);
       });
 
     });
@@ -255,3 +273,10 @@ class SpyElementInjector extends SpyObject {
   constructor(){super(ElementInjector);}
   noSuchMethod(m){return super.noSuchMethod(m)}
 }
+
+@proxy
+@IMPLEMENTS(ViewFactory)
+class SpyViewFactory extends SpyObject {
+  constructor(){super(ViewFactory);}
+  noSuchMethod(m){return super.noSuchMethod(m)}
+}

modules/angular2/test/core/compiler/view_spec.js

@@ -57,7 +57,7 @@ export function main() {
     }
 
     function createViewWithOneBoundElement(pv) {
-      var view = new AppView(renderer, null, null, pv, MapWrapper.create());
+      var view = new AppView(renderer, null, pv, MapWrapper.create());
       var changeDetector = new SpyChangeDetector();
       var eij = createElementInjector();
       view.init(changeDetector, [eij], [eij],

modules/angular2/test/render/dom/direct_dom_renderer_integration_spec.js

@@ -50,6 +50,16 @@ export function main() {
       });
     }));
 
+    it('should create imperative proto views', inject([AsyncTestCompleter], (async) => {
+      createRenderer();
+      renderer.createImperativeComponentProtoView('someRenderId').then( (rootProtoView) => {
+        expect(rootProtoView.elementBinders).toEqual([]);
+
+        expect(rootProtoView.render.delegate.imperativeRendererId).toBe('someRenderId');
+        async.done();
+      });
+    }));
+
     it('should add a static component', inject([AsyncTestCompleter], (async) => {
       createRenderer();
       renderer.createHostProtoView('someComponentId').then( (rootProtoView) => {

modules/angular2/test/render/dom/integration_testbed.js

@@ -46,7 +46,7 @@ export class IntegrationTestbed {
     this.eventPlugin = new FakeEventManagerPlugin();
     var eventManager = new EventManager([this.eventPlugin], new FakeVmTurnZone());
     var viewFactory = new ViewFactory(viewCacheCapacity, eventManager, shadowDomStrategy);
-    var viewHydrator = new RenderViewHydrator(eventManager, viewFactory);
+    var viewHydrator = new RenderViewHydrator(eventManager, viewFactory, shadowDomStrategy);
     this.renderer = new DirectDomRenderer(compiler, viewFactory, viewHydrator, shadowDomStrategy);
   }
 

modules/angular2/test/render/dom/view/view_hydrator_spec.js

@@ -14,7 +14,7 @@ import {
   xit,
   SpyObject, proxy
 } from 'angular2/test_lib';
-import {IMPLEMENTS, isBlank} from 'angular2/src/facade/lang';
+import {IMPLEMENTS, isBlank, isPresent} from 'angular2/src/facade/lang';
 
 import {RenderProtoView} from 'angular2/src/render/dom/view/proto_view';
 import {ElementBinder} from 'angular2/src/render/dom/view/element_binder';
@@ -76,7 +76,7 @@ export function main() {
     function createHostView(pv, shadowDomView) {
       var view = new RenderView(pv, [el('<div></div>')],
         [], [el('<div></div>')], [null]);
-      viewFactory.setComponentView(view, 0, shadowDomView);
+      ViewFactory.setComponentView(shadowDomStrategy, view, 0, shadowDomView);
       return view;
     }
 
@@ -94,8 +94,8 @@ export function main() {
       shadowDomStrategy.spy('constructLightDom').andCallFake( (lightDomView, shadowDomView, el) => {
         return new SpyLightDom();
       });
-      viewFactory = new ViewFactory(1, eventManager, shadowDomStrategy);
-      viewHydrator = new RenderViewHydrator(eventManager, viewFactory);
+      viewFactory = new SpyViewFactory();
+      viewHydrator = new RenderViewHydrator(eventManager, viewFactory, shadowDomStrategy);
     });
 
     describe('hydrateDynamicComponentView', () => {
@@ -111,6 +111,59 @@ export function main() {
 
     });
 
+    describe('hydrateInPlaceHostView', () => {
+
+      function createInPlaceHostView() {
+        var hostPv = createHostProtoView(createProtoView());
+        var shadowView = createEmptyView();
+        return createHostView(hostPv, shadowView);
+      }
+
+      it('should hydrate the view', () => {
+        var hostView = createInPlaceHostView();
+        viewHydrator.hydrateInPlaceHostView(null, hostView);
+
+        expect(hostView.hydrated).toBe(true);
+      });
+
+      it('should store the view in the parent view', () => {
+        var parentView = createEmptyView();
+        var hostView = createInPlaceHostView();
+
+        viewHydrator.hydrateInPlaceHostView(parentView, hostView);
+
+        expect(parentView.imperativeHostViews).toEqual([hostView]);
+
+      });
+
+    });
+
+    describe('dehydrateInPlaceHostView', () => {
+
+      function createAndHydrateInPlaceHostView(parentView) {
+        var hostPv = createHostProtoView(createProtoView());
+        var shadowView = createEmptyView();
+        var hostView = createHostView(hostPv, shadowView);
+        viewHydrator.hydrateInPlaceHostView(parentView, hostView);
+        return hostView;
+      }
+
+      it('should clear the host view', () => {
+        var parentView = createEmptyView();
+        var hostView = createAndHydrateInPlaceHostView(parentView);
+
+        var rootNodes = hostView.rootNodes;
+        expect(rootNodes[0].parentNode).toBeTruthy();
+
+        viewHydrator.dehydrateInPlaceHostView(parentView, hostView);
+
+        expect(parentView.imperativeHostViews).toEqual([]);
+        expect(rootNodes[0].parentNode).toBeFalsy();
+        expect(hostView.rootNodes).toEqual([]);
+      });
+
+    });
+
     describe('hydrate... shared functionality', () => {
 
       it('should hydrate existing child components', () => {
@@ -128,9 +181,12 @@ export function main() {
     describe('dehydrate... shared functionality', () => {
       var hostView;
 
-      function createAndHydrate(nestedProtoView, shadowView) {
+      function createAndHydrate(nestedProtoView, shadowView, imperativeHostView = null) {
         var hostPv = createHostProtoView(nestedProtoView);
         hostView = createHostView(hostPv, shadowView);
+        if (isPresent(imperativeHostView)) {
+          viewHydrator.hydrateInPlaceHostView(hostView, imperativeHostView);
+        }
 
         hydrate(hostView);
       }
@@ -152,15 +208,36 @@ export function main() {
 
         expect(hostView.componentChildViews[0]).toBe(shadowView);
         expect(shadowView.rootNodes[0].parentNode).toBeTruthy();
+        expect(viewFactory.spy('returnView')).not.toHaveBeenCalled();
       });
 
       it('should clear dynamic child components', () => {
         var shadowView = createEmptyView();
         createAndHydrate(null, shadowView);
+        expect(shadowView.rootNodes[0].parentNode).toBeTruthy();
+
         dehydrate(hostView);
 
         expect(hostView.componentChildViews[0]).toBe(null);
         expect(shadowView.rootNodes[0].parentNode).toBe(null);
+        expect(viewFactory.spy('returnView')).toHaveBeenCalledWith(shadowView);
+      });
+
+      it('should clear imperatively added child components', () => {
+        var shadowView = createEmptyView();
+        createAndHydrate(createProtoView(), shadowView);
+        var impHostView = createHostView(createHostProtoView(createProtoView()), createEmptyView());
+        shadowView.imperativeHostViews = [impHostView];
+
+        var rootNodes = impHostView.rootNodes;
+        expect(rootNodes[0].parentNode).toBeTruthy();
+
+        dehydrate(hostView);
+
+        expect(shadowView.imperativeHostViews).toEqual([]);
+        expect(impHostView.rootNodes).toEqual([]);
+        expect(rootNodes[0].parentNode).toBeFalsy();
+        expect(viewFactory.spy('returnView')).toHaveBeenCalledWith(impHostView);
       });
 
     });
@@ -189,3 +266,9 @@ class SpyLightDom extends SpyObject {
   noSuchMethod(m){return super.noSuchMethod(m)}
 }
 
+@proxy
+@IMPLEMENTS(ViewFactory)
+class SpyViewFactory extends SpyObject {
+  constructor(){super(ViewFactory);}
+  noSuchMethod(m){return super.noSuchMethod(m)}
+}