feat(view): implemented loading component next to existing location

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, null, injector);
+        return dynamicComponentLoader.loadIntoNewLocation(appElement, appComponentAnnotatedType.type, injector);
       }, [DynamicComponentLoader, Injector, appElementToken, appComponentAnnotatedTypeToken,
         Testability, TestabilityRegistry]),
 

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

@@ -16,11 +16,13 @@ export class ComponentRef {
   location:ElementRef;
   instance:any;
   componentView:AppView;
+  _dispose:Function;
 
-  constructor(location:ElementRef, instance:any, componentView:AppView){
+  constructor(location:ElementRef, instance:any, componentView:AppView, dispose:Function){
     this.location = location;
     this.instance = instance;
     this.componentView = componentView;
+    this._dispose = dispose;
   }
 
   get injector() {
@@ -30,6 +32,10 @@ export class ComponentRef {
   get hostView() {
     return this.location.hostView;
   }
+
+  dispose() {
+    this._dispose();
+  }
 }
 
 /**
@@ -72,16 +78,16 @@ export class DynamicComponentLoader {
       // from the component child views
       // See ViewFactory.returnView
       // See AppViewHydrator.dehydrateDynamicComponentView
-      return new ComponentRef(location, location.elementInjector.getDynamicallyLoadedComponent(), componentView);
+      var dispose = () => {throw "Not implemented";};
+      return new ComponentRef(location, location.elementInjector.getDynamicallyLoadedComponent(), componentView, dispose);
     });
   }
 
   /**
-   * Loads a component as a child of the View given by the provided ElementRef. The loaded
+   * Loads a component in the element specified by elementOrSelector. The loaded component receives
-   * component receives injection normally as a hosted view.
+   * injection normally as a hosted view.
    */
-  loadIntoNewLocation(elementOrSelector:any, type:Type, location:ElementRef,
+  loadIntoNewLocation(elementOrSelector:any, type:Type, injector:Injector = null):Promise<ComponentRef> {
-                      injector:Injector = null):Promise<ComponentRef> {
     this._assertTypeIsComponent(type);
 
     return  this._compiler.compileInHost(type).then(hostProtoView => {
@@ -91,9 +97,30 @@ export class DynamicComponentLoader {
       // TODO(vsavkin): return a component ref that dehydrates the host view
       // See ViewFactory.returnView
       // See AppViewHydrator.dehydrateInPlaceHostView
-      var newLocation = new ElementRef(hostView.elementInjectors[0]);
+      var newLocation = hostView.elementInjectors[0].getElementRef();
       var component = hostView.elementInjectors[0].getComponent();
-      return new ComponentRef(newLocation, component, hostView.componentChildViews[0]);
+      var dispose = () => {throw "Not implemented";};
+      return new ComponentRef(newLocation, component, hostView.componentChildViews[0], dispose);
+    });
+  }
+
+  /**
+   * Loads a component next to the provided ElementRef. The loaded component receives
+   * injection normally as a hosted view.
+   */
+  loadNextToExistingLocation(type:Type, location:ElementRef, injector:Injector = null):Promise<ComponentRef> {
+    this._assertTypeIsComponent(type);
+
+    return this._compiler.compileInHost(type).then(hostProtoView => {
+      var hostView = location.viewContainer.create(-1, hostProtoView, injector);
+
+      var newLocation = hostView.elementInjectors[0].getElementRef();
+      var component = hostView.elementInjectors[0].getComponent();
+      var dispose = () => {
+        var index = location.viewContainer.indexOf(hostView);
+        location.viewContainer.remove(index);
+      };
+      return new ComponentRef(newLocation, component, hostView.componentChildViews[0], dispose);
     });
   }
 

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

@@ -672,6 +672,10 @@ export class ElementInjector extends TreeNode {
     }
   }
 
+  getElementRef() {
+    return new ElementRef(this);
+  }
+
   getDynamicallyLoadedComponent() {
     return this._dynamicallyCreatedComponent;
   }
@@ -741,7 +745,7 @@ export class ElementInjector extends TreeNode {
     if (isPresent(dep.attributeName)) return this._buildAttribute(dep);
     if (isPresent(dep.queryDirective)) return this._findQuery(dep.queryDirective).list;
     if (dep.key.id === StaticKeys.instance().elementRefId) {
-      return new ElementRef(this);
+      return this.getElementRef();
     }
     return this._getByKey(dep.key, dep.depth, dep.optional, requestor);
   }

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

@@ -92,6 +92,10 @@ export class ViewContainer {
     return view;
   }
 
+  indexOf(view:viewModule.AppView) {
+    return ListWrapper.indexOf(this._views, view);
+  }
+
   remove(atIndex=-1) {
     if (atIndex == -1) atIndex = this._views.length - 1;
     var view = this._views[atIndex];

modules/angular2/src/facade/collection.es6

@@ -129,6 +129,9 @@ export class ListWrapper {
   static filter(array, pred:Function) {
     return array.filter(pred);
   }
+  static indexOf(array, value, startIndex = -1) {
+    return array.indexOf(value, startIndex);
+  }
   static any(list:List, pred:Function) {
     for (var i = 0 ; i < list.length; ++i) {
       if (pred(list[i])) return true;

modules/angular2/src/facade/collection.ts

@@ -114,6 +114,9 @@ export class ListWrapper {
     }
     return null;
   }
+  static indexOf(array: List<any>, value, startIndex = -1) {
+    return array.indexOf(value, startIndex);
+  }
   static reduce<T>(list: List<T>,
                    fn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T,
                    init: T) {

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

@@ -11,118 +11,194 @@ import {
   inject,
   beforeEachBindings,
   it,
-  xit,
+  xit
-  SpyObject, proxy
+  } from 'angular2/test_lib';
-} from 'angular2/test_lib';
+
-import {IMPLEMENTS} from 'angular2/src/facade/lang';
+import {TestBed} from 'angular2/src/test_lib/test_bed';
-import {MapWrapper, ListWrapper} from 'angular2/src/facade/collection';
+
-import {Promise, PromiseWrapper} from 'angular2/src/facade/async';
+import {Decorator, Component, Viewport, DynamicComponent} from 'angular2/src/core/annotations/annotations';
-import {DirectiveMetadataReader} from 'angular2/src/core/compiler/directive_metadata_reader';
+import {View} from 'angular2/src/core/annotations/view';
 import {DynamicComponentLoader} from 'angular2/src/core/compiler/dynamic_component_loader';
-import {Decorator, Viewport, Component} from 'angular2/src/core/annotations/annotations';
+import {ElementRef} from 'angular2/src/core/compiler/element_injector';
-import {ElementRef, ElementInjector, ProtoElementInjector, PreBuiltObjects} from 'angular2/src/core/compiler/element_injector';
+import {If} from 'angular2/src/directives/if';
-import {Compiler} from 'angular2/src/core/compiler/compiler';
-import {AppProtoView, AppView} from 'angular2/src/core/compiler/view';
-import {ViewFactory} from 'angular2/src/core/compiler/view_factory'
-import {AppViewHydrator} from 'angular2/src/core/compiler/view_hydrator';
 
 export function main() {
-  describe("DynamicComponentLoader", () => {
+  describe('DynamicComponentLoader', function () {
-    var compiler;
+    describe("loading into existing location", () => {
-    var viewFactory;
+      it('should work', inject([TestBed, AsyncTestCompleter], (tb, async) => {
-    var directiveMetadataReader;
+        tb.overrideView(MyComp, new View({
-    var viewHydrator;
+          template: '<dynamic-comp #dynamic></dynamic-comp>',
-    var loader;
+          directives: [DynamicComp]
+        }));
 
-    beforeEach( () => {
+        tb.createView(MyComp).then((view) => {
-      compiler = new SpyCompiler();
+          var dynamicComponent = view.rawView.locals.get("dynamic");
-      viewFactory = new SpyViewFactory();
+          expect(dynamicComponent).toBeAnInstanceOf(DynamicComp);
-      viewHydrator = new SpyAppViewHydrator();
-      directiveMetadataReader = new DirectiveMetadataReader();
-      loader = new DynamicComponentLoader(compiler, directiveMetadataReader, viewFactory, viewHydrator);
-    });
 
-    function createProtoView() {
+          dynamicComponent.done.then((_) => {
-      return new AppProtoView(null, null);
+            view.detectChanges();
-    }
+            expect(view.rootNodes).toHaveText('hello');
-
-    function createEmptyView() {
-      var view = new AppView(null, null, null, createProtoView(), MapWrapper.create());
-      view.init(null, [], [], [], []);
-      return view;
-    }
-
-    function createElementRef(view, boundElementIndex) {
-      var peli = new ProtoElementInjector(null, boundElementIndex, []);
-      var eli = new ElementInjector(peli, null);
-      var preBuiltObjects = new PreBuiltObjects(view, null, null);
-      eli.instantiateDirectives(null, null, null, preBuiltObjects);
-      return new ElementRef(eli);
-    }
-
-    describe("loadIntoExistingLocation", () => {
-      describe('Load errors', () => {
-        it('should throw when trying to load a decorator', () => {
-          expect(() => loader.loadIntoExistingLocation(SomeDecorator, null))
-            .toThrowError("Could not load 'SomeDecorator' because it is not a component.");
-        });
-
-        it('should throw when trying to load a viewport', () => {
-          expect(() => loader.loadIntoExistingLocation(SomeViewport, null))
-            .toThrowError("Could not load 'SomeViewport' because it is not a component.");
-        });
-      });
-
-      it('should compile, create and hydrate the view', inject([AsyncTestCompleter], (async) => {
-        var log = [];
-        var protoView = createProtoView();
-        var hostView = createEmptyView();
-        var childView = createEmptyView();
-        viewHydrator.spy('hydrateDynamicComponentView').andCallFake( (hostView, boundElementIndex,
-            componentView, componentDirective, injector) => {
-          ListWrapper.push(log, ['hydrateDynamicComponentView', hostView, boundElementIndex, componentView]);
-        });
-        viewFactory.spy('getView').andCallFake( (protoView) => {
-          ListWrapper.push(log, ['getView', protoView]);
-          return childView;
-        });
-        compiler.spy('compile').andCallFake( (_) => PromiseWrapper.resolve(protoView));
-
-        var elementRef = createElementRef(hostView, 23);
-        loader.loadIntoExistingLocation(SomeComponent, elementRef).then( (componentRef) => {
-          expect(log[0]).toEqual(['getView', protoView]);
-          expect(log[1]).toEqual(['hydrateDynamicComponentView', hostView, 23, childView]);
             async.done();
           });
+        });
       }));
 
+      it('should inject dependencies of the dynamically-loaded component', inject([TestBed, AsyncTestCompleter], (tb, async) => {
+        tb.overrideView(MyComp, new View({
+          template: '<dynamic-comp #dynamic></dynamic-comp>',
+          directives: [DynamicComp]
+        }));
+
+        tb.createView(MyComp).then((view) => {
+          var dynamicComponent = view.rawView.locals.get("dynamic");
+          dynamicComponent.done.then((ref) => {
+            expect(ref.instance.dynamicallyCreatedComponentService).toBeAnInstanceOf(DynamicallyCreatedComponentService);
+            async.done();
+          });
+        });
+      }));
+
+      it('should allow to destroy and create them via viewport directives',
+        inject([TestBed, AsyncTestCompleter], (tb, async) => {
+          tb.overrideView(MyComp, new View({
+            template: '<div><dynamic-comp #dynamic template="if: ctxBoolProp"></dynamic-comp></div>',
+            directives: [DynamicComp, If]
+          }));
+
+          tb.createView(MyComp).then((view) => {
+            view.context.ctxBoolProp = true;
+            view.detectChanges();
+            var dynamicComponent = view.rawView.viewContainers[0].get(0).locals.get("dynamic");
+            dynamicComponent.done.then((_) => {
+              view.detectChanges();
+              expect(view.rootNodes).toHaveText('hello');
+
+              view.context.ctxBoolProp = false;
+              view.detectChanges();
+
+              expect(view.rawView.viewContainers[0].length).toBe(0);
+              expect(view.rootNodes).toHaveText('');
+
+              view.context.ctxBoolProp = true;
+              view.detectChanges();
+
+              var dynamicComponent = view.rawView.viewContainers[0].get(0).locals.get("dynamic");
+              return dynamicComponent.done;
+            }).then((_) => {
+              view.detectChanges();
+              expect(view.rootNodes).toHaveText('hello');
+              async.done();
+            });
+          });
+        }));
     });
 
+    describe("loading next to an existing location", () => {
+      it('should work', inject([DynamicComponentLoader, TestBed, AsyncTestCompleter],
+        (loader, tb, async) => {
+          tb.overrideView(MyComp, new View({
+            template: '<div><location #loc></location></div>',
+            directives: [Location]
+          }));
+
+          tb.createView(MyComp).then((view) => {
+            var location = view.rawView.locals.get("loc");
+
+            loader.loadNextToExistingLocation(DynamicallyLoaded, location.elementRef).then(ref => {
+              expect(view.rootNodes).toHaveText("Location;DynamicallyLoaded;")
+              async.done();
+            });
+          });
+        }));
+
+      it('should return a disposable component ref', inject([DynamicComponentLoader, TestBed, AsyncTestCompleter],
+        (loader, tb, async) => {
+          tb.overrideView(MyComp, new View({
+            template: '<div><location #loc></location></div>',
+            directives: [Location]
+          }));
+
+          tb.createView(MyComp).then((view) => {
+            var location = view.rawView.locals.get("loc");
+            loader.loadNextToExistingLocation(DynamicallyLoaded, location.elementRef).then(ref => {
+              loader.loadNextToExistingLocation(DynamicallyLoaded2, location.elementRef).then(ref2 => {
+                expect(view.rootNodes).toHaveText("Location;DynamicallyLoaded;DynamicallyLoaded2;")
+
+                ref2.dispose();
+
+                expect(view.rootNodes).toHaveText("Location;DynamicallyLoaded;")
+
+                async.done();
+              });
+            });
+          });
+        }));
+    });
   });
 }
 
-@Decorator({selector: 'someDecorator'})
-class SomeDecorator {}
 
-@Viewport({selector: 'someViewport'})
+class DynamicallyCreatedComponentService {
-class SomeViewport {}
+}
 
-@Component({selector: 'someComponent'})
+@DynamicComponent({
-class SomeComponent {}
+  selector: 'dynamic-comp'
+})
+class DynamicComp {
+  done;
 
+  constructor(loader:DynamicComponentLoader, location:ElementRef) {
+    this.done = loader.loadIntoExistingLocation(DynamicallyCreatedCmp, location);
+  }
+}
 
-@proxy
+@Component({
-@IMPLEMENTS(Compiler)
+  selector: 'hello-cmp',
-class SpyCompiler extends SpyObject {noSuchMethod(m){return super.noSuchMethod(m)}}
+  injectables: [DynamicallyCreatedComponentService]
+})
+@View({
+  template: "{{greeting}}"
+})
+class DynamicallyCreatedCmp {
+  greeting:string;
+  dynamicallyCreatedComponentService:DynamicallyCreatedComponentService;
 
-@proxy
+  constructor(a:DynamicallyCreatedComponentService) {
-@IMPLEMENTS(ViewFactory)
+    this.greeting = "hello";
-class SpyViewFactory extends SpyObject {noSuchMethod(m){return super.noSuchMethod(m)}}
+    this.dynamicallyCreatedComponentService = a;
+  }
+}
 
-@proxy
+@Component({selector: 'dummy'})
-@IMPLEMENTS(AppViewHydrator)
+@View({template: "DynamicallyLoaded;"})
-class SpyAppViewHydrator extends SpyObject {noSuchMethod(m){return super.noSuchMethod(m)}}
+class DynamicallyLoaded {
+}
 
-@proxy
+@Component({selector: 'dummy'})
-@IMPLEMENTS(AppView)
+@View({template: "DynamicallyLoaded2;"})
-class SpyAppView extends SpyObject {noSuchMethod(m){return super.noSuchMethod(m)}}
+class DynamicallyLoaded2 {
+}
+
+@Component({
+  selector: 'location'
+})
+@View({template: "Location;"})
+class Location {
+  elementRef:ElementRef;
+
+  constructor(elementRef:ElementRef) {
+    this.elementRef = elementRef;
+  }
+}
+
+@Component()
+@View({
+  directives: []
+})
+class MyComp {
+  ctxBoolProp:boolean;
+
+  constructor() {
+    this.ctxBoolProp = false;
+  }
+}

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

@@ -28,8 +28,6 @@ import {Decorator, Component, Viewport, DynamicComponent} from 'angular2/src/cor
 import {View} from 'angular2/src/core/annotations/view';
 import {Parent, Ancestor} from 'angular2/src/core/annotations/visibility';
 import {Attribute} from 'angular2/src/core/annotations/di';
-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';
 
@@ -643,75 +641,6 @@ export function main() {
         }));
       }
 
-      describe("dynamic components", () => {
-        it('should support loading components dynamically', inject([TestBed, AsyncTestCompleter], (tb, async) => {
-          tb.overrideView(MyComp, new View({
-            template: '<dynamic-comp #dynamic></dynamic-comp>',
-            directives: [DynamicComp]
-          }));
-
-          tb.createView(MyComp).then((view) => {
-            var dynamicComponent = view.rawView.locals.get("dynamic");
-            expect(dynamicComponent).toBeAnInstanceOf(DynamicComp);
-
-            dynamicComponent.done.then((_) => {
-              view.detectChanges();
-              expect(view.rootNodes).toHaveText('hello');
-              async.done();
-            });
-          });
-        }));
-
-        it('should inject dependencies of the dynamically-loaded component', inject([TestBed, AsyncTestCompleter], (tb, async) => {
-          tb.overrideView(MyComp, new View({
-            template: '<dynamic-comp #dynamic></dynamic-comp>',
-            directives: [DynamicComp]
-          }));
-
-          tb.createView(MyComp).then((view) => {
-            var dynamicComponent = view.rawView.locals.get("dynamic");
-            dynamicComponent.done.then((ref) => {
-              expect(ref.instance.dynamicallyCreatedComponentService).toBeAnInstanceOf(DynamicallyCreatedComponentService);
-              async.done();
-            });
-          });
-        }));
-
-        it('should allow to destroy and create them via viewport directives',
-            inject([TestBed, AsyncTestCompleter], (tb, async) => {
-          tb.overrideView(MyComp, new View({
-            template: '<div><dynamic-comp #dynamic template="if: ctxBoolProp"></dynamic-comp></div>',
-            directives: [DynamicComp, If]
-          }));
-
-          tb.createView(MyComp).then((view) => {
-            view.context.ctxBoolProp = true;
-            view.detectChanges();
-            var dynamicComponent = view.rawView.viewContainers[0].get(0).locals.get("dynamic");
-            dynamicComponent.done.then((_) => {
-              view.detectChanges();
-              expect(view.rootNodes).toHaveText('hello');
-
-              view.context.ctxBoolProp = false;
-              view.detectChanges();
-
-              expect(view.rawView.viewContainers[0].length).toBe(0);
-              expect(view.rootNodes).toHaveText('');
-
-              view.context.ctxBoolProp = true;
-              view.detectChanges();
-
-              var dynamicComponent = view.rawView.viewContainers[0].get(0).locals.get("dynamic");
-              return dynamicComponent.done;
-            }).then((_) => {
-              view.detectChanges();
-              expect(view.rootNodes).toHaveText('hello');
-              async.done();
-            });
-          });
-        }));
-      });
-
       describe('dynamic ViewContainers', () => {
 
         it('should allow to create a ViewContainer at any bound location',
@@ -868,34 +797,6 @@ class DynamicViewport {
   }
 }
 
-class DynamicallyCreatedComponentService {}
-
-@DynamicComponent({
-  selector: 'dynamic-comp'
-})
-class DynamicComp {
-  done;
-  constructor(loader:DynamicComponentLoader, location:ElementRef) {
-    this.done = loader.loadIntoExistingLocation(DynamicallyCreatedCmp, location);
-  }
-}
-
-@Component({
-  selector: 'hello-cmp',
-  injectables: [DynamicallyCreatedComponentService]
-})
-@View({
-  template: "{{greeting}}"
-})
-class DynamicallyCreatedCmp {
-  greeting:string;
-  dynamicallyCreatedComponentService:DynamicallyCreatedComponentService;
-  constructor(a:DynamicallyCreatedComponentService) {
-    this.greeting = "hello";
-    this.dynamicallyCreatedComponentService = a;
-  }
-}
-
 @Decorator({
   selector: '[my-dir]',
   properties: {'dirProp':'elprop'}