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@angular/core

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Angular - the core framework

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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 { assertDataInRange } from '../util/assert'; import { assertComponentType } from './assert'; import { getComponentDef } from './definition'; import { diPublicInInjector, getOrCreateNodeInjectorForNode } from './di'; import { registerPostOrderHooks } from './hooks'; import { addHostBindingsToExpandoInstructions, addToViewTree, CLEAN_PROMISE, createLView, createTView, getOrCreateTComponentView, getOrCreateTNode, growHostVarsSpace, initTNodeFlags, instantiateRootComponent, invokeHostBindingsInCreationMode, locateHostElement, markAsComponentHost, refreshView, renderView } from './instructions/shared'; import { domRendererFactory3 } from './interfaces/renderer'; import { CONTEXT, HEADER_OFFSET, TVIEW } from './interfaces/view'; import { writeDirectClass, writeDirectStyle } from './node_manipulation'; import { enterView, getPreviousOrParentTNode, leaveView, setSelectedIndex } from './state'; import { computeStaticStyling } from './styling/static_styling'; import { setUpAttributes } from './util/attrs_utils'; import { publishDefaultGlobalUtils } from './util/global_utils'; import { defaultScheduler, stringifyForError } from './util/misc_utils'; import { getRootContext } from './util/view_traversal_utils'; import { readPatchedLView } from './util/view_utils'; var ɵ0 = function (token, notFoundValue) { throw new Error('NullInjector: Not found: ' + stringifyForError(token)); }; // TODO: A hack to not pull in the NullInjector from @angular/core. export var NULL_INJECTOR = { get: ɵ0 }; /** * Bootstraps a Component into an existing host element and returns an instance * of the component. * * Use this function to bootstrap a component into the DOM tree. Each invocation * of this function will create a separate tree of components, injectors and * change detection cycles and lifetimes. To dynamically insert a new component * into an existing tree such that it shares the same injection, change detection * and object lifetime, use {@link ViewContainer#createComponent}. * * @param componentType Component to bootstrap * @param options Optional parameters which control bootstrapping */ export function renderComponent(componentType /* Type as workaround for: Microsoft/TypeScript/issues/4881 */, opts) { if (opts === void 0) { opts = {}; } ngDevMode && publishDefaultGlobalUtils(); ngDevMode && assertComponentType(componentType); var rendererFactory = opts.rendererFactory || domRendererFactory3; var sanitizer = opts.sanitizer || null; var componentDef = getComponentDef(componentType); if (componentDef.type != componentType) componentDef.type = componentType; // The first index of the first selector is the tag name. var componentTag = componentDef.selectors[0][0]; var hostRenderer = rendererFactory.createRenderer(null, null); var hostRNode = locateHostElement(hostRenderer, opts.host || componentTag, componentDef.encapsulation); var rootFlags = componentDef.onPush ? 64 /* Dirty */ | 512 /* IsRoot */ : 16 /* CheckAlways */ | 512 /* IsRoot */; var rootContext = createRootContext(opts.scheduler, opts.playerHandler); var renderer = rendererFactory.createRenderer(hostRNode, componentDef); var rootTView = createTView(0 /* Root */, -1, null, 1, 0, null, null, null, null, null); var rootView = createLView(null, rootTView, rootContext, rootFlags, null, null, rendererFactory, renderer, undefined, opts.injector || null); enterView(rootView, null); var component; try { if (rendererFactory.begin) rendererFactory.begin(); var componentView = createRootComponentView(hostRNode, componentDef, rootView, rendererFactory, renderer, sanitizer); component = createRootComponent(componentView, componentDef, rootView, rootContext, opts.hostFeatures || null); // create mode pass renderView(rootTView, rootView, null); // update mode pass refreshView(rootTView, rootView, null, null); } finally { leaveView(); if (rendererFactory.end) rendererFactory.end(); } return component; } /** * Creates the root component view and the root component node. * * @param rNode Render host element. * @param def ComponentDef * @param rootView The parent view where the host node is stored * @param hostRenderer The current renderer * @param sanitizer The sanitizer, if provided * * @returns Component view created */ export function createRootComponentView(rNode, def, rootView, rendererFactory, hostRenderer, sanitizer) { var tView = rootView[TVIEW]; ngDevMode && assertDataInRange(rootView, 0 + HEADER_OFFSET); rootView[0 + HEADER_OFFSET] = rNode; var tNode = getOrCreateTNode(tView, null, 0, 3 /* Element */, null, null); var mergedAttrs = tNode.mergedAttrs = def.hostAttrs; if (mergedAttrs !== null) { computeStaticStyling(tNode, mergedAttrs, true); if (rNode !== null) { setUpAttributes(hostRenderer, rNode, mergedAttrs); if (tNode.classes !== null) { writeDirectClass(hostRenderer, rNode, tNode.classes); } if (tNode.styles !== null) { writeDirectStyle(hostRenderer, rNode, tNode.styles); } } } var viewRenderer = rendererFactory.createRenderer(rNode, def); var componentView = createLView(rootView, getOrCreateTComponentView(def), null, def.onPush ? 64 /* Dirty */ : 16 /* CheckAlways */, rootView[HEADER_OFFSET], tNode, rendererFactory, viewRenderer, sanitizer); if (tView.firstCreatePass) { diPublicInInjector(getOrCreateNodeInjectorForNode(tNode, rootView), tView, def.type); markAsComponentHost(tView, tNode); initTNodeFlags(tNode, rootView.length, 1); } addToViewTree(rootView, componentView); // Store component view at node index, with node as the HOST return rootView[HEADER_OFFSET] = componentView; } /** * Creates a root component and sets it up with features and host bindings. Shared by * renderComponent() and ViewContainerRef.createComponent(). */ export function createRootComponent(componentView, componentDef, rootLView, rootContext, hostFeatures) { var tView = rootLView[TVIEW]; // Create directive instance with factory() and store at next index in viewData var component = instantiateRootComponent(tView, rootLView, componentDef); rootContext.components.push(component); componentView[CONTEXT] = component; hostFeatures && hostFeatures.forEach(function (feature) { return feature(component, componentDef); }); // We want to generate an empty QueryList for root content queries for backwards // compatibility with ViewEngine. if (componentDef.contentQueries) { componentDef.contentQueries(1 /* Create */, component, rootLView.length - 1); } var rootTNode = getPreviousOrParentTNode(); if (tView.firstCreatePass && (componentDef.hostBindings !== null || componentDef.hostAttrs !== null)) { var elementIndex = rootTNode.index - HEADER_OFFSET; setSelectedIndex(elementIndex); var rootTView = rootLView[TVIEW]; addHostBindingsToExpandoInstructions(rootTView, componentDef); growHostVarsSpace(rootTView, rootLView, componentDef.hostVars); invokeHostBindingsInCreationMode(componentDef, component); } return component; } export function createRootContext(scheduler, playerHandler) { return { components: [], scheduler: scheduler || defaultScheduler, clean: CLEAN_PROMISE, playerHandler: playerHandler || null, flags: 0 /* Empty */ }; } /** * Used to enable lifecycle hooks on the root component. * * Include this feature when calling `renderComponent` if the root component * you are rendering has lifecycle hooks defined. Otherwise, the hooks won't * be called properly. * * Example: * * ``` * renderComponent(AppComponent, {hostFeatures: [LifecycleHooksFeature]}); * ``` */ export function LifecycleHooksFeature(component, def) { var rootTView = readPatchedLView(component)[TVIEW]; var dirIndex = rootTView.data.length - 1; // TODO(misko): replace `as TNode` with createTNode call. (needs refactoring to lose dep on // LNode). registerPostOrderHooks(rootTView, { directiveStart: dirIndex, directiveEnd: dirIndex + 1 }); } /** * Wait on component until it is rendered. * * This function returns a `Promise` which is resolved when the component's * change detection is executed. This is determined by finding the scheduler * associated with the `component`'s render tree and waiting until the scheduler * flushes. If nothing is scheduled, the function returns a resolved promise. * * Example: * ``` * await whenRendered(myComponent); * ``` * * @param component Component to wait upon * @returns Promise which resolves when the component is rendered. */ export function whenRendered(component) { return getRootContext(component).clean; } export { ɵ0 }; //# 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* @license\n * Copyright Google Inc. All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n// We are temporarily importing the existing viewEngine from core so we can be sure we are\n// correctly implementing its interfaces for backwards compatibility.\nimport {Type} from '../core';\nimport {Injector} from '../di/injector';\nimport {Sanitizer} from '../sanitization/sanitizer';\nimport {assertDataInRange} from '../util/assert';\n\nimport {assertComponentType} from './assert';\nimport {getComponentDef} from './definition';\nimport {diPublicInInjector, getOrCreateNodeInjectorForNode} from './di';\nimport {registerPostOrderHooks} from './hooks';\nimport {addHostBindingsToExpandoInstructions, addToViewTree, CLEAN_PROMISE, createLView, createTView, getOrCreateTComponentView, getOrCreateTNode, growHostVarsSpace, initTNodeFlags, instantiateRootComponent, invokeHostBindingsInCreationMode, locateHostElement, markAsComponentHost, refreshView, renderView} from './instructions/shared';\nimport {ComponentDef, ComponentType, RenderFlags} from './interfaces/definition';\nimport {TElementNode, TNode, TNodeType} from './interfaces/node';\nimport {PlayerHandler} from './interfaces/player';\nimport {domRendererFactory3, RElement, Renderer3, RendererFactory3} from './interfaces/renderer';\nimport {CONTEXT, HEADER_OFFSET, LView, LViewFlags, RootContext, RootContextFlags, TVIEW, TViewType} from './interfaces/view';\nimport {writeDirectClass, writeDirectStyle} from './node_manipulation';\nimport {enterView, getPreviousOrParentTNode, leaveView, setSelectedIndex} from './state';\nimport {computeStaticStyling} from './styling/static_styling';\nimport {setUpAttributes} from './util/attrs_utils';\nimport {publishDefaultGlobalUtils} from './util/global_utils';\nimport {defaultScheduler, stringifyForError} from './util/misc_utils';\nimport {getRootContext} from './util/view_traversal_utils';\nimport {readPatchedLView} from './util/view_utils';\n\n\n\n/** Options that control how the component should be bootstrapped. */\nexport interface CreateComponentOptions {\n  /** Which renderer factory to use. */\n  rendererFactory?: RendererFactory3;\n\n  /** A custom sanitizer instance */\n  sanitizer?: Sanitizer;\n\n  /** A custom animation player handler */\n  playerHandler?: PlayerHandler;\n\n  /**\n   * Host element on which the component will be bootstrapped. 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It cannot be added to the component\n   * features list because there's no way of knowing when the component will be used as\n   * a root component.\n   */\n  hostFeatures?: HostFeature[];\n\n  /**\n   * A function which is used to schedule change detection work in the future.\n   *\n   * When marking components as dirty, it is necessary to schedule the work of\n   * change detection in the future. This is done to coalesce multiple\n   * {@link markDirty} calls into a single changed detection processing.\n   *\n   * The default value of the scheduler is the `requestAnimationFrame` function.\n   *\n   * It is also useful to override this function for testing purposes.\n   */\n  scheduler?: (work: () => void) => void;\n}\n\n/** See CreateComponentOptions.hostFeatures */\ntype HostFeature = (<T>(component: T, componentDef: ComponentDef<T>) => void);\n\n// TODO: A hack to not pull in the NullInjector from @angular/core.\nexport const NULL_INJECTOR: Injector = {\n  get: (token: any, notFoundValue?: any) => {\n    throw new Error('NullInjector: Not found: ' + stringifyForError(token));\n  }\n};\n\n/**\n * Bootstraps a Component into an existing host element and returns an instance\n * of the component.\n *\n * Use this function to bootstrap a component into the DOM tree. Each invocation\n * of this function will create a separate tree of components, injectors and\n * change detection cycles and lifetimes. To dynamically insert a new component\n * into an existing tree such that it shares the same injection, change detection\n * and object lifetime, use {@link ViewContainer#createComponent}.\n *\n * @param componentType Component to bootstrap\n * @param options Optional parameters which control bootstrapping\n */\nexport function renderComponent<T>(\n    componentType: ComponentType<T>|\n    Type<T>/* Type as workaround for: Microsoft/TypeScript/issues/4881 */\n    ,\n    opts: CreateComponentOptions = {}): T {\n  ngDevMode && publishDefaultGlobalUtils();\n  ngDevMode && assertComponentType(componentType);\n\n  const rendererFactory = opts.rendererFactory || domRendererFactory3;\n  const sanitizer = opts.sanitizer || null;\n  const componentDef = getComponentDef<T>(componentType)!;\n  if (componentDef.type != componentType) (componentDef as {type: Type<any>}).type = componentType;\n\n  // The first index of the first selector is the tag name.\n  const componentTag = componentDef.selectors![0]![0] as string;\n  const hostRenderer = rendererFactory.createRenderer(null, null);\n  const hostRNode =\n      locateHostElement(hostRenderer, opts.host || componentTag, componentDef.encapsulation);\n  const rootFlags = componentDef.onPush ? LViewFlags.Dirty | LViewFlags.IsRoot :\n                                          LViewFlags.CheckAlways | LViewFlags.IsRoot;\n  const rootContext = createRootContext(opts.scheduler, opts.playerHandler);\n\n  const renderer = rendererFactory.createRenderer(hostRNode, componentDef);\n  const rootTView = createTView(TViewType.Root, -1, null, 1, 0, null, null, null, null, null);\n  const rootView: LView = createLView(\n      null, rootTView, rootContext, rootFlags, null, null, rendererFactory, renderer, undefined,\n      opts.injector || null);\n\n  enterView(rootView, null);\n  let component: T;\n\n  try {\n    if (rendererFactory.begin) rendererFactory.begin();\n    const componentView = createRootComponentView(\n        hostRNode, componentDef, rootView, rendererFactory, renderer, sanitizer);\n    component = createRootComponent(\n        componentView, componentDef, rootView, rootContext, opts.hostFeatures || null);\n\n    // create mode pass\n    renderView(rootTView, rootView, null);\n    // update mode pass\n    refreshView(rootTView, rootView, null, null);\n\n  } finally {\n    leaveView();\n    if (rendererFactory.end) rendererFactory.end();\n  }\n\n  return component;\n}\n\n/**\n * Creates the root component view and the root component node.\n *\n * @param rNode Render host element.\n * @param def ComponentDef\n * @param rootView The parent view where the host node is stored\n * @param hostRenderer The current renderer\n * @param sanitizer The sanitizer, if provided\n *\n * @returns Component view created\n */\nexport function createRootComponentView(\n    rNode: RElement|null, def: ComponentDef<any>, rootView: LView,\n    rendererFactory: RendererFactory3, hostRenderer: Renderer3, sanitizer?: Sanitizer|null): LView {\n  const tView = rootView[TVIEW];\n  ngDevMode && assertDataInRange(rootView, 0 + HEADER_OFFSET);\n  rootView[0 + HEADER_OFFSET] = rNode;\n  const tNode: TElementNode = getOrCreateTNode(tView, null, 0, TNodeType.Element, null, null);\n  const mergedAttrs = tNode.mergedAttrs = def.hostAttrs;\n  if (mergedAttrs !== null) {\n    computeStaticStyling(tNode, mergedAttrs, true);\n    if (rNode !== null) {\n      setUpAttributes(hostRenderer, rNode, mergedAttrs);\n      if (tNode.classes !== null) {\n        writeDirectClass(hostRenderer, rNode, tNode.classes);\n      }\n      if (tNode.styles !== null) {\n        writeDirectStyle(hostRenderer, rNode, tNode.styles);\n      }\n    }\n  }\n\n  const viewRenderer = rendererFactory.createRenderer(rNode, def);\n  const componentView = createLView(\n      rootView, getOrCreateTComponentView(def), null,\n      def.onPush ? LViewFlags.Dirty : LViewFlags.CheckAlways, rootView[HEADER_OFFSET], tNode,\n      rendererFactory, viewRenderer, sanitizer);\n\n  if (tView.firstCreatePass) {\n    diPublicInInjector(getOrCreateNodeInjectorForNode(tNode, rootView), tView, def.type);\n    markAsComponentHost(tView, tNode);\n    initTNodeFlags(tNode, rootView.length, 1);\n  }\n\n  addToViewTree(rootView, componentView);\n\n  // Store component view at node index, with node as the HOST\n  return rootView[HEADER_OFFSET] = componentView;\n}\n\n/**\n * Creates a root component and sets it up with features and host bindings. Shared by\n * renderComponent() and ViewContainerRef.createComponent().\n */\nexport function createRootComponent<T>(\n    componentView: LView, componentDef: ComponentDef<T>, rootLView: LView, rootContext: RootContext,\n    hostFeatures: HostFeature[]|null): any {\n  const tView = rootLView[TVIEW];\n  // Create directive instance with factory() and store at next index in viewData\n  const component = instantiateRootComponent(tView, rootLView, componentDef);\n\n  rootContext.components.push(component);\n  componentView[CONTEXT] = component;\n\n  hostFeatures && hostFeatures.forEach((feature) => feature(component, componentDef));\n\n  // We want to generate an empty QueryList for root content queries for backwards\n  // compatibility with ViewEngine.\n  if (componentDef.contentQueries) {\n    componentDef.contentQueries(RenderFlags.Create, component, rootLView.length - 1);\n  }\n\n  const rootTNode = getPreviousOrParentTNode();\n  if (tView.firstCreatePass &&\n      (componentDef.hostBindings !== null || componentDef.hostAttrs !== null)) {\n    const elementIndex = rootTNode.index - HEADER_OFFSET;\n    setSelectedIndex(elementIndex);\n\n    const rootTView = rootLView[TVIEW];\n    addHostBindingsToExpandoInstructions(rootTView, componentDef);\n    growHostVarsSpace(rootTView, rootLView, componentDef.hostVars);\n\n    invokeHostBindingsInCreationMode(componentDef, component);\n  }\n  return component;\n}\n\n\nexport function createRootContext(\n    scheduler?: (workFn: () => void) => void, playerHandler?: PlayerHandler|null): RootContext {\n  return {\n    components: [],\n    scheduler: scheduler || defaultScheduler,\n    clean: CLEAN_PROMISE,\n    playerHandler: playerHandler || null,\n    flags: RootContextFlags.Empty\n  };\n}\n\n/**\n * Used to enable lifecycle hooks on the root component.\n *\n * Include this feature when calling `renderComponent` if the root component\n * you are rendering has lifecycle hooks defined. Otherwise, the hooks won't\n * be called properly.\n *\n * Example:\n *\n * ```\n * renderComponent(AppComponent, {hostFeatures: [LifecycleHooksFeature]});\n * ```\n */\nexport function LifecycleHooksFeature(component: any, def: ComponentDef<any>): void {\n  const rootTView = readPatchedLView(component)![TVIEW];\n  const dirIndex = rootTView.data.length - 1;\n\n  // TODO(misko): replace `as TNode` with createTNode call. (needs refactoring to lose dep on\n  // LNode).\n  registerPostOrderHooks(\n      rootTView, {directiveStart: dirIndex, directiveEnd: dirIndex + 1} as TNode);\n}\n\n/**\n * Wait on component until it is rendered.\n *\n * This function returns a `Promise` which is resolved when the component's\n * change detection is executed. This is determined by finding the scheduler\n * associated with the `component`'s render tree and waiting until the scheduler\n * flushes. If nothing is scheduled, the function returns a resolved promise.\n *\n * Example:\n * ```\n * await whenRendered(myComponent);\n * ```\n *\n * @param component Component to wait upon\n * @returns Promise which resolves when the component is rendered.\n */\nexport function whenRendered(component: any): Promise<null> {\n  return getRootContext(component).clean;\n}\n"]}