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refs.ts
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refs.ts
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/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {ApplicationRef} from '../application_ref';
import {ChangeDetectorRef} from '../change_detection/change_detection';
import {Injector} from '../di';
import {ComponentFactory, ComponentRef} from '../linker/component_factory';
import {ComponentFactoryBoundToModule} from '../linker/component_factory_resolver';
import {ElementRef} from '../linker/element_ref';
import {NgModuleRef} from '../linker/ng_module_factory';
import {TemplateRef} from '../linker/template_ref';
import {ViewContainerRef} from '../linker/view_container_ref';
import {EmbeddedViewRef, InternalViewRef, ViewRef} from '../linker/view_ref';
import {Renderer as RendererV1, Renderer2} from '../render/api';
import {Type} from '../type';
import {VERSION} from '../version';
import {DepFlags, ElementData, NodeDef, NodeFlags, Services, TemplateData, ViewContainerData, ViewData, ViewDefinitionFactory, ViewState, asElementData, asProviderData, asTextData} from './types';
import {markParentViewsForCheck, resolveViewDefinition, rootRenderNodes, splitNamespace, tokenKey, viewParentEl} from './util';
import {attachEmbeddedView, detachEmbeddedView, moveEmbeddedView, renderDetachView} from './view_attach';
const EMPTY_CONTEXT = new Object();
// Attention: this function is called as top level function.
// Putting any logic in here will destroy closure tree shaking!
export function createComponentFactory(
selector: string, componentType: Type<any>, viewDefFactory: ViewDefinitionFactory,
inputs: {[propName: string]: string}, outputs: {[propName: string]: string},
ngContentSelectors: string[]): ComponentFactory<any> {
return new ComponentFactory_(
selector, componentType, viewDefFactory, inputs, outputs, ngContentSelectors);
}
export function getComponentViewDefinitionFactory(componentFactory: ComponentFactory<any>):
ViewDefinitionFactory {
return (componentFactory as ComponentFactory_).viewDefFactory;
}
class ComponentFactory_ extends ComponentFactory<any> {
/**
* @internal
*/
viewDefFactory: ViewDefinitionFactory;
constructor(
public selector: string, public componentType: Type<any>,
viewDefFactory: ViewDefinitionFactory, private _inputs: {[propName: string]: string},
private _outputs: {[propName: string]: string}, public ngContentSelectors: string[]) {
// Attention: this ctor is called as top level function.
// Putting any logic in here will destroy closure tree shaking!
super();
this.viewDefFactory = viewDefFactory;
}
get inputs() {
const inputsArr: {propName: string, templateName: string}[] = [];
for (let propName in this._inputs) {
const templateName = this._inputs[propName];
inputsArr.push({propName, templateName});
}
return inputsArr;
}
get outputs() {
const outputsArr: {propName: string, templateName: string}[] = [];
for (let propName in this._outputs) {
const templateName = this._outputs[propName];
outputsArr.push({propName, templateName});
}
return outputsArr;
}
/**
* Creates a new component.
*/
create(
injector: Injector, projectableNodes?: any[][], rootSelectorOrNode?: string|any,
ngModule?: NgModuleRef<any>): ComponentRef<any> {
if (!ngModule) {
throw new Error('ngModule should be provided');
}
const viewDef = resolveViewDefinition(this.viewDefFactory);
const componentNodeIndex = viewDef.nodes[0].element !.componentProvider !.index;
const view = Services.createRootView(
injector, projectableNodes || [], rootSelectorOrNode, viewDef, ngModule, EMPTY_CONTEXT);
const component = asProviderData(view, componentNodeIndex).instance;
view.renderer.setAttribute(asElementData(view, 0).renderElement, 'ng-version', VERSION.full);
return new ComponentRef_(view, new ViewRef_(view), component);
}
}
class ComponentRef_ extends ComponentRef<any> {
private _elDef: NodeDef;
constructor(private _view: ViewData, private _viewRef: ViewRef, private _component: any) {
super();
this._elDef = this._view.def.nodes[0];
}
get location(): ElementRef {
return new ElementRef(asElementData(this._view, this._elDef.index).renderElement);
}
get injector(): Injector { return new Injector_(this._view, this._elDef); }
get instance(): any { return this._component; };
get hostView(): ViewRef { return this._viewRef; };
get changeDetectorRef(): ChangeDetectorRef { return this._viewRef; };
get componentType(): Type<any> { return <any>this._component.constructor; }
destroy(): void { this._viewRef.destroy(); }
onDestroy(callback: Function): void { this._viewRef.onDestroy(callback); }
}
export function createViewContainerData(
view: ViewData, elDef: NodeDef, elData: ElementData): ViewContainerData {
return new ViewContainerRef_(view, elDef, elData);
}
class ViewContainerRef_ implements ViewContainerData {
/**
* @internal
*/
_embeddedViews: ViewData[] = [];
constructor(private _view: ViewData, private _elDef: NodeDef, private _data: ElementData) {}
get element(): ElementRef { return new ElementRef(this._data.renderElement); }
get injector(): Injector { return new Injector_(this._view, this._elDef); }
get parentInjector(): Injector {
let view = this._view;
let elDef = this._elDef.parent;
while (!elDef && view) {
elDef = viewParentEl(view);
view = view.parent !;
}
return view ? new Injector_(view, elDef) : new Injector_(this._view, null);
}
clear(): void {
const len = this._embeddedViews.length;
for (let i = len - 1; i >= 0; i--) {
const view = detachEmbeddedView(this._data, i) !;
Services.destroyView(view);
}
}
get(index: number): ViewRef|null {
const view = this._embeddedViews[index];
if (view) {
const ref = new ViewRef_(view);
ref.attachToViewContainerRef(this);
return ref;
}
return null;
}
get length(): number { return this._embeddedViews.length; };
createEmbeddedView<C>(templateRef: TemplateRef<C>, context?: C, index?: number):
EmbeddedViewRef<C> {
const viewRef = templateRef.createEmbeddedView(context || <any>{});
this.insert(viewRef, index);
return viewRef;
}
createComponent<C>(
componentFactory: ComponentFactory<C>, index?: number, injector?: Injector,
projectableNodes?: any[][], ngModuleRef?: NgModuleRef<any>): ComponentRef<C> {
const contextInjector = injector || this.parentInjector;
if (!ngModuleRef && !(componentFactory instanceof ComponentFactoryBoundToModule)) {
ngModuleRef = contextInjector.get(NgModuleRef);
}
const componentRef =
componentFactory.create(contextInjector, projectableNodes, undefined, ngModuleRef);
this.insert(componentRef.hostView, index);
return componentRef;
}
insert(viewRef: ViewRef, index?: number): ViewRef {
const viewRef_ = <ViewRef_>viewRef;
const viewData = viewRef_._view;
attachEmbeddedView(this._view, this._data, index, viewData);
viewRef_.attachToViewContainerRef(this);
return viewRef;
}
move(viewRef: ViewRef_, currentIndex: number): ViewRef {
const previousIndex = this._embeddedViews.indexOf(viewRef._view);
moveEmbeddedView(this._data, previousIndex, currentIndex);
return viewRef;
}
indexOf(viewRef: ViewRef): number {
return this._embeddedViews.indexOf((<ViewRef_>viewRef)._view);
}
remove(index?: number): void {
const viewData = detachEmbeddedView(this._data, index);
if (viewData) {
Services.destroyView(viewData);
}
}
detach(index?: number): ViewRef|null {
const view = detachEmbeddedView(this._data, index);
return view ? new ViewRef_(view) : null;
}
}
export function createChangeDetectorRef(view: ViewData): ChangeDetectorRef {
return new ViewRef_(view);
}
export class ViewRef_ implements EmbeddedViewRef<any>, InternalViewRef {
/** @internal */
_view: ViewData;
private _viewContainerRef: ViewContainerRef|null;
private _appRef: ApplicationRef|null;
constructor(_view: ViewData) {
this._view = _view;
this._viewContainerRef = null;
this._appRef = null;
}
get rootNodes(): any[] { return rootRenderNodes(this._view); }
get context() { return this._view.context; }
get destroyed(): boolean { return (this._view.state & ViewState.Destroyed) !== 0; }
markForCheck(): void { markParentViewsForCheck(this._view); }
detach(): void { this._view.state &= ~ViewState.ChecksEnabled; }
detectChanges(): void { Services.checkAndUpdateView(this._view); }
checkNoChanges(): void { Services.checkNoChangesView(this._view); }
reattach(): void { this._view.state |= ViewState.ChecksEnabled; }
onDestroy(callback: Function) {
if (!this._view.disposables) {
this._view.disposables = [];
}
this._view.disposables.push(<any>callback);
}
destroy() {
if (this._appRef) {
this._appRef.detachView(this);
} else if (this._viewContainerRef) {
this._viewContainerRef.detach(this._viewContainerRef.indexOf(this));
}
Services.destroyView(this._view);
}
detachFromAppRef() {
this._appRef = null;
renderDetachView(this._view);
Services.dirtyParentQueries(this._view);
}
attachToAppRef(appRef: ApplicationRef) {
if (this._viewContainerRef) {
throw new Error('This view is already attached to a ViewContainer!');
}
this._appRef = appRef;
}
attachToViewContainerRef(vcRef: ViewContainerRef) {
if (this._appRef) {
throw new Error('This view is already attached directly to the ApplicationRef!');
}
this._viewContainerRef = vcRef;
}
}
export function createTemplateData(view: ViewData, def: NodeDef): TemplateData {
return new TemplateRef_(view, def);
}
class TemplateRef_ extends TemplateRef<any> implements TemplateData {
/**
* @internal
*/
_projectedViews: ViewData[];
constructor(private _parentView: ViewData, private _def: NodeDef) { super(); }
createEmbeddedView(context: any): EmbeddedViewRef<any> {
return new ViewRef_(Services.createEmbeddedView(this._parentView, this._def, context));
}
get elementRef(): ElementRef {
return new ElementRef(asElementData(this._parentView, this._def.index).renderElement);
}
}
export function createInjector(view: ViewData, elDef: NodeDef): Injector {
return new Injector_(view, elDef);
}
class Injector_ implements Injector {
constructor(private view: ViewData, private elDef: NodeDef|null) {}
get(token: any, notFoundValue: any = Injector.THROW_IF_NOT_FOUND): any {
const allowPrivateServices =
this.elDef ? (this.elDef.flags & NodeFlags.ComponentView) !== 0 : false;
return Services.resolveDep(
this.view, this.elDef, allowPrivateServices,
{flags: DepFlags.None, token, tokenKey: tokenKey(token)}, notFoundValue);
}
}
export function nodeValue(view: ViewData, index: number): any {
const def = view.def.nodes[index];
if (def.flags & NodeFlags.TypeElement) {
const elData = asElementData(view, def.index);
return def.element !.template ? elData.template : elData.renderElement;
} else if (def.flags & NodeFlags.TypeText) {
return asTextData(view, def.index).renderText;
} else if (def.flags & (NodeFlags.CatProvider | NodeFlags.TypePipe)) {
return asProviderData(view, def.index).instance;
}
throw new Error(`Illegal state: read nodeValue for node index ${index}`);
}
export function createRendererV1(view: ViewData): RendererV1 {
return new RendererAdapter(view.renderer);
}
class RendererAdapter implements RendererV1 {
constructor(private delegate: Renderer2) {}
selectRootElement(selectorOrNode: string|Element): Element {
return this.delegate.selectRootElement(selectorOrNode);
}
createElement(parent: Element|DocumentFragment, namespaceAndName: string): Element {
const [ns, name] = splitNamespace(namespaceAndName);
const el = this.delegate.createElement(name, ns);
if (parent) {
this.delegate.appendChild(parent, el);
}
return el;
}
createViewRoot(hostElement: Element): Element|DocumentFragment { return hostElement; }
createTemplateAnchor(parentElement: Element|DocumentFragment): Comment {
const comment = this.delegate.createComment('');
if (parentElement) {
this.delegate.appendChild(parentElement, comment);
}
return comment;
}
createText(parentElement: Element|DocumentFragment, value: string): any {
const node = this.delegate.createText(value);
if (parentElement) {
this.delegate.appendChild(parentElement, node);
}
return node;
}
projectNodes(parentElement: Element|DocumentFragment, nodes: Node[]) {
for (let i = 0; i < nodes.length; i++) {
this.delegate.appendChild(parentElement, nodes[i]);
}
}
attachViewAfter(node: Node, viewRootNodes: Node[]) {
const parentElement = this.delegate.parentNode(node);
const nextSibling = this.delegate.nextSibling(node);
for (let i = 0; i < viewRootNodes.length; i++) {
this.delegate.insertBefore(parentElement, viewRootNodes[i], nextSibling);
}
}
detachView(viewRootNodes: (Element|Text|Comment)[]) {
for (let i = 0; i < viewRootNodes.length; i++) {
const node = viewRootNodes[i];
const parentElement = this.delegate.parentNode(node);
this.delegate.removeChild(parentElement, node);
}
}
destroyView(hostElement: Element|DocumentFragment, viewAllNodes: Node[]) {
for (let i = 0; i < viewAllNodes.length; i++) {
this.delegate.destroyNode !(viewAllNodes[i]);
}
}
listen(renderElement: any, name: string, callback: Function): Function {
return this.delegate.listen(renderElement, name, <any>callback);
}
listenGlobal(target: string, name: string, callback: Function): Function {
return this.delegate.listen(target, name, <any>callback);
}
setElementProperty(
renderElement: Element|DocumentFragment, propertyName: string, propertyValue: any): void {
this.delegate.setProperty(renderElement, propertyName, propertyValue);
}
setElementAttribute(renderElement: Element, namespaceAndName: string, attributeValue: string):
void {
const [ns, name] = splitNamespace(namespaceAndName);
if (attributeValue != null) {
this.delegate.setAttribute(renderElement, name, attributeValue, ns);
} else {
this.delegate.removeAttribute(renderElement, name, ns);
}
}
setBindingDebugInfo(renderElement: Element, propertyName: string, propertyValue: string): void {}
setElementClass(renderElement: Element, className: string, isAdd: boolean): void {
if (isAdd) {
this.delegate.addClass(renderElement, className);
} else {
this.delegate.removeClass(renderElement, className);
}
}
setElementStyle(renderElement: HTMLElement, styleName: string, styleValue: string): void {
if (styleValue != null) {
this.delegate.setStyle(renderElement, styleName, styleValue);
} else {
this.delegate.removeStyle(renderElement, styleName);
}
}
invokeElementMethod(renderElement: Element, methodName: string, args: any[]): void {
(renderElement as any)[methodName].apply(renderElement, args);
}
setText(renderNode: Text, text: string): void { this.delegate.setValue(renderNode, text); }
animate(): any { throw new Error('Renderer.animate is no longer supported!'); }
}