@angular/core
Version:
Angular - the core framework
265 lines • 41.1 kB
JavaScript
/**
* @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 { __extends } from "tslib";
import { InjectionToken } from '../di/injection_token';
import { ComponentFactory as viewEngine_ComponentFactory, ComponentRef as viewEngine_ComponentRef } from '../linker/component_factory';
import { ComponentFactoryResolver as viewEngine_ComponentFactoryResolver } from '../linker/component_factory_resolver';
import { ElementRef as viewEngine_ElementRef } from '../linker/element_ref';
import { RendererFactory2 } from '../render/api';
import { Sanitizer } from '../sanitization/sanitizer';
import { VERSION } from '../version';
import { NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR } from '../view/provider';
import { assertComponentType } from './assert';
import { createRootComponent, createRootComponentView, createRootContext, LifecycleHooksFeature } from './component';
import { getComponentDef } from './definition';
import { NodeInjector } from './di';
import { assignTViewNodeToLView, createLView, createTView, elementCreate, locateHostElement, renderView } from './instructions/shared';
import { domRendererFactory3 } from './interfaces/renderer';
import { TVIEW } from './interfaces/view';
import { MATH_ML_NAMESPACE, SVG_NAMESPACE } from './namespaces';
import { assertNodeOfPossibleTypes } from './node_assert';
import { writeDirectClass } from './node_manipulation';
import { extractAttrsAndClassesFromSelector, stringifyCSSSelectorList } from './node_selector_matcher';
import { enterView, leaveView } from './state';
import { setUpAttributes } from './util/attrs_utils';
import { defaultScheduler } from './util/misc_utils';
import { getTNode } from './util/view_utils';
import { createElementRef } from './view_engine_compatibility';
import { RootViewRef } from './view_ref';
var ComponentFactoryResolver = /** @class */ (function (_super) {
__extends(ComponentFactoryResolver, _super);
/**
* @param ngModule The NgModuleRef to which all resolved factories are bound.
*/
function ComponentFactoryResolver(ngModule) {
var _this = _super.call(this) || this;
_this.ngModule = ngModule;
return _this;
}
ComponentFactoryResolver.prototype.resolveComponentFactory = function (component) {
ngDevMode && assertComponentType(component);
var componentDef = getComponentDef(component);
return new ComponentFactory(componentDef, this.ngModule);
};
return ComponentFactoryResolver;
}(viewEngine_ComponentFactoryResolver));
export { ComponentFactoryResolver };
function toRefArray(map) {
var array = [];
for (var nonMinified in map) {
if (map.hasOwnProperty(nonMinified)) {
var minified = map[nonMinified];
array.push({ propName: minified, templateName: nonMinified });
}
}
return array;
}
function getNamespace(elementName) {
var name = elementName.toLowerCase();
return name === 'svg' ? SVG_NAMESPACE : (name === 'math' ? MATH_ML_NAMESPACE : null);
}
/**
* A change detection scheduler token for {@link RootContext}. This token is the default value used
* for the default `RootContext` found in the {@link ROOT_CONTEXT} token.
*/
export var SCHEDULER = new InjectionToken('SCHEDULER_TOKEN', {
providedIn: 'root',
factory: function () { return defaultScheduler; },
});
function createChainedInjector(rootViewInjector, moduleInjector) {
return {
get: function (token, notFoundValue, flags) {
var value = rootViewInjector.get(token, NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR, flags);
if (value !== NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR ||
notFoundValue === NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR) {
// Return the value from the root element injector when
// - it provides it
// (value !== NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR)
// - the module injector should not be checked
// (notFoundValue === NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR)
return value;
}
return moduleInjector.get(token, notFoundValue, flags);
}
};
}
/**
* Render3 implementation of {@link viewEngine_ComponentFactory}.
*/
var ComponentFactory = /** @class */ (function (_super) {
__extends(ComponentFactory, _super);
/**
* @param componentDef The component definition.
* @param ngModule The NgModuleRef to which the factory is bound.
*/
function ComponentFactory(componentDef, ngModule) {
var _this = _super.call(this) || this;
_this.componentDef = componentDef;
_this.ngModule = ngModule;
_this.componentType = componentDef.type;
_this.selector = stringifyCSSSelectorList(componentDef.selectors);
_this.ngContentSelectors =
componentDef.ngContentSelectors ? componentDef.ngContentSelectors : [];
_this.isBoundToModule = !!ngModule;
return _this;
}
Object.defineProperty(ComponentFactory.prototype, "inputs", {
get: function () {
return toRefArray(this.componentDef.inputs);
},
enumerable: true,
configurable: true
});
Object.defineProperty(ComponentFactory.prototype, "outputs", {
get: function () {
return toRefArray(this.componentDef.outputs);
},
enumerable: true,
configurable: true
});
ComponentFactory.prototype.create = function (injector, projectableNodes, rootSelectorOrNode, ngModule) {
ngModule = ngModule || this.ngModule;
var rootViewInjector = ngModule ? createChainedInjector(injector, ngModule.injector) : injector;
var rendererFactory = rootViewInjector.get(RendererFactory2, domRendererFactory3);
var sanitizer = rootViewInjector.get(Sanitizer, null);
var hostRenderer = rendererFactory.createRenderer(null, this.componentDef);
// Determine a tag name used for creating host elements when this component is created
// dynamically. Default to 'div' if this component did not specify any tag name in its selector.
var elementName = this.componentDef.selectors[0][0] || 'div';
var hostRNode = rootSelectorOrNode ?
locateHostElement(hostRenderer, rootSelectorOrNode, this.componentDef.encapsulation) :
elementCreate(elementName, rendererFactory.createRenderer(null, this.componentDef), getNamespace(elementName));
var rootFlags = this.componentDef.onPush ? 64 /* Dirty */ | 512 /* IsRoot */ :
16 /* CheckAlways */ | 512 /* IsRoot */;
// Check whether this Component needs to be isolated from other components, i.e. whether it
// should be placed into its own (empty) root context or existing root context should be used.
// Note: this is internal-only convention and might change in the future, so it should not be
// relied upon externally.
var isIsolated = typeof rootSelectorOrNode === 'string' &&
/^#root-ng-internal-isolated-\d+/.test(rootSelectorOrNode);
var rootContext = createRootContext();
// Create the root view. Uses empty TView and ContentTemplate.
var rootTView = createTView(0 /* Root */, -1, null, 1, 0, null, null, null, null, null);
var rootLView = createLView(null, rootTView, rootContext, rootFlags, null, null, rendererFactory, hostRenderer, sanitizer, rootViewInjector);
// rootView is the parent when bootstrapping
// TODO(misko): it looks like we are entering view here but we don't really need to as
// `renderView` does that. However as the code is written it is needed because
// `createRootComponentView` and `createRootComponent` both read global state. Fixing those
// issues would allow us to drop this.
enterView(rootLView, null);
var component;
var tElementNode;
try {
var componentView = createRootComponentView(hostRNode, this.componentDef, rootLView, rendererFactory, hostRenderer);
if (hostRNode) {
if (rootSelectorOrNode) {
setUpAttributes(hostRenderer, hostRNode, ['ng-version', VERSION.full]);
}
else {
// If host element is created as a part of this function call (i.e. `rootSelectorOrNode`
// is not defined), also apply attributes and classes extracted from component selector.
// Extract attributes and classes from the first selector only to match VE behavior.
var _a = extractAttrsAndClassesFromSelector(this.componentDef.selectors[0]), attrs = _a.attrs, classes = _a.classes;
if (attrs) {
setUpAttributes(hostRenderer, hostRNode, attrs);
}
if (classes && classes.length > 0) {
writeDirectClass(hostRenderer, hostRNode, classes.join(' '));
}
}
}
tElementNode = getTNode(rootTView, 0);
if (projectableNodes !== undefined) {
var projection = tElementNode.projection = [];
for (var i = 0; i < this.ngContentSelectors.length; i++) {
var nodesforSlot = projectableNodes[i];
// Projectable nodes can be passed as array of arrays or an array of iterables (ngUpgrade
// case). Here we do normalize passed data structure to be an array of arrays to avoid
// complex checks down the line.
// We also normalize the length of the passed in projectable nodes (to match the number of
// <ng-container> slots defined by a component).
projection.push(nodesforSlot != null ? Array.from(nodesforSlot) : null);
}
}
// TODO: should LifecycleHooksFeature and other host features be generated by the compiler and
// executed here?
// Angular 5 reference: https://stackblitz.com/edit/lifecycle-hooks-vcref
component = createRootComponent(componentView, this.componentDef, rootLView, rootContext, [LifecycleHooksFeature]);
renderView(rootTView, rootLView, null);
}
finally {
leaveView();
}
var componentRef = new ComponentRef(this.componentType, component, createElementRef(viewEngine_ElementRef, tElementNode, rootLView), rootLView, tElementNode);
if (!rootSelectorOrNode || isIsolated) {
// The host element of the internal or isolated root view is attached to the component's host
// view node.
ngDevMode && assertNodeOfPossibleTypes(rootTView.node, 2 /* View */);
rootTView.node.child = tElementNode;
}
return componentRef;
};
return ComponentFactory;
}(viewEngine_ComponentFactory));
export { ComponentFactory };
var componentFactoryResolver = new ComponentFactoryResolver();
/**
* Creates a ComponentFactoryResolver and stores it on the injector. Or, if the
* ComponentFactoryResolver
* already exists, retrieves the existing ComponentFactoryResolver.
*
* @returns The ComponentFactoryResolver instance to use
*/
export function injectComponentFactoryResolver() {
return componentFactoryResolver;
}
/**
* Represents an instance of a Component created via a {@link ComponentFactory}.
*
* `ComponentRef` provides access to the Component Instance as well other objects related to this
* Component Instance and allows you to destroy the Component Instance via the {@link #destroy}
* method.
*
*/
var ComponentRef = /** @class */ (function (_super) {
__extends(ComponentRef, _super);
function ComponentRef(componentType, instance, location, _rootLView, _tNode) {
var _this = _super.call(this) || this;
_this.location = location;
_this._rootLView = _rootLView;
_this._tNode = _tNode;
_this.destroyCbs = [];
_this.instance = instance;
_this.hostView = _this.changeDetectorRef = new RootViewRef(_rootLView);
assignTViewNodeToLView(_rootLView[TVIEW], null, -1, _rootLView);
_this.componentType = componentType;
return _this;
}
Object.defineProperty(ComponentRef.prototype, "injector", {
get: function () {
return new NodeInjector(this._tNode, this._rootLView);
},
enumerable: true,
configurable: true
});
ComponentRef.prototype.destroy = function () {
if (this.destroyCbs) {
this.destroyCbs.forEach(function (fn) { return fn(); });
this.destroyCbs = null;
!this.hostView.destroyed && this.hostView.destroy();
}
};
ComponentRef.prototype.onDestroy = function (callback) {
if (this.destroyCbs) {
this.destroyCbs.push(callback);
}
};
return ComponentRef;
}(viewEngine_ComponentRef));
export { ComponentRef };
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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\nimport {ChangeDetectorRef as ViewEngine_ChangeDetectorRef} from '../change_detection/change_detector_ref';\nimport {InjectionToken} from '../di/injection_token';\nimport {Injector} from '../di/injector';\nimport {InjectFlags} from '../di/interface/injector';\nimport {Type} from '../interface/type';\nimport {ComponentFactory as viewEngine_ComponentFactory, ComponentRef as viewEngine_ComponentRef} from '../linker/component_factory';\nimport {ComponentFactoryResolver as viewEngine_ComponentFactoryResolver} from '../linker/component_factory_resolver';\nimport {ElementRef as viewEngine_ElementRef} from '../linker/element_ref';\nimport {NgModuleRef as viewEngine_NgModuleRef} from '../linker/ng_module_factory';\nimport {RendererFactory2} from '../render/api';\nimport {Sanitizer} from '../sanitization/sanitizer';\nimport {VERSION} from '../version';\nimport {NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR} from '../view/provider';\n\nimport {assertComponentType} from './assert';\nimport {createRootComponent, createRootComponentView, createRootContext, LifecycleHooksFeature} from './component';\nimport {getComponentDef} from './definition';\nimport {NodeInjector} from './di';\nimport {assignTViewNodeToLView, createLView, createTView, elementCreate, locateHostElement, renderView} from './instructions/shared';\nimport {ComponentDef} from './interfaces/definition';\nimport {TContainerNode, TElementContainerNode, TElementNode, TNode, TNodeType} from './interfaces/node';\nimport {domRendererFactory3, RendererFactory3, RNode} from './interfaces/renderer';\nimport {LView, LViewFlags, TVIEW, TViewType} from './interfaces/view';\nimport {MATH_ML_NAMESPACE, SVG_NAMESPACE} from './namespaces';\nimport {assertNodeOfPossibleTypes} from './node_assert';\nimport {writeDirectClass} from './node_manipulation';\nimport {extractAttrsAndClassesFromSelector, stringifyCSSSelectorList} from './node_selector_matcher';\nimport {enterView, leaveView} from './state';\nimport {setUpAttributes} from './util/attrs_utils';\nimport {defaultScheduler} from './util/misc_utils';\nimport {getTNode} from './util/view_utils';\nimport {createElementRef} from './view_engine_compatibility';\nimport {RootViewRef, ViewRef} from './view_ref';\n\nexport class ComponentFactoryResolver extends viewEngine_ComponentFactoryResolver {\n  /**\n   * @param ngModule The NgModuleRef to which all resolved factories are bound.\n   */\n  constructor(private ngModule?: viewEngine_NgModuleRef<any>) {\n    super();\n  }\n\n  resolveComponentFactory<T>(component: Type<T>): viewEngine_ComponentFactory<T> {\n    ngDevMode && assertComponentType(component);\n    const componentDef = getComponentDef(component)!;\n    return new ComponentFactory(componentDef, this.ngModule);\n  }\n}\n\nfunction toRefArray(map: {[key: string]: string}): {propName: string; templateName: string;}[] {\n  const array: {propName: string; templateName: string;}[] = [];\n  for (let nonMinified in map) {\n    if (map.hasOwnProperty(nonMinified)) {\n      const minified = map[nonMinified];\n      array.push({propName: minified, templateName: nonMinified});\n    }\n  }\n  return array;\n}\n\nfunction getNamespace(elementName: string): string|null {\n  const name = elementName.toLowerCase();\n  return name === 'svg' ? SVG_NAMESPACE : (name === 'math' ? MATH_ML_NAMESPACE : null);\n}\n\n/**\n * A change detection scheduler token for {@link RootContext}. This token is the default value used\n * for the default `RootContext` found in the {@link ROOT_CONTEXT} token.\n */\nexport const SCHEDULER = new InjectionToken<((fn: () => void) => void)>('SCHEDULER_TOKEN', {\n  providedIn: 'root',\n  factory: () => defaultScheduler,\n});\n\nfunction createChainedInjector(rootViewInjector: Injector, moduleInjector: Injector): Injector {\n  return {\n    get: <T>(token: Type<T>|InjectionToken<T>, notFoundValue?: T, flags?: InjectFlags): T => {\n      const value = rootViewInjector.get(token, NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR as T, flags);\n\n      if (value !== NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR ||\n          notFoundValue === NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR) {\n        // Return the value from the root element injector when\n        // - it provides it\n        //   (value !== NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR)\n        // - the module injector should not be checked\n        //   (notFoundValue === NOT_FOUND_CHECK_ONLY_ELEMENT_INJECTOR)\n        return value;\n      }\n\n      return moduleInjector.get(token, notFoundValue, flags);\n    }\n  };\n}\n\n/**\n * Render3 implementation of {@link viewEngine_ComponentFactory}.\n */\nexport class ComponentFactory<T> extends viewEngine_ComponentFactory<T> {\n  selector: string;\n  componentType: Type<any>;\n  ngContentSelectors: string[];\n  isBoundToModule: boolean;\n\n  get inputs(): {propName: string; templateName: string;}[] {\n    return toRefArray(this.componentDef.inputs);\n  }\n\n  get outputs(): {propName: string; templateName: string;}[] {\n    return toRefArray(this.componentDef.outputs);\n  }\n\n  /**\n   * @param componentDef The component definition.\n   * @param ngModule The NgModuleRef to which the factory is bound.\n   */\n  constructor(\n      private componentDef: ComponentDef<any>, private ngModule?: viewEngine_NgModuleRef<any>) {\n    super();\n    this.componentType = componentDef.type;\n    this.selector = stringifyCSSSelectorList(componentDef.selectors);\n    this.ngContentSelectors =\n        componentDef.ngContentSelectors ? componentDef.ngContentSelectors : [];\n    this.isBoundToModule = !!ngModule;\n  }\n\n  create(\n      injector: Injector, projectableNodes?: any[][]|undefined, rootSelectorOrNode?: any,\n      ngModule?: viewEngine_NgModuleRef<any>|undefined): viewEngine_ComponentRef<T> {\n    ngModule = ngModule || this.ngModule;\n\n    const rootViewInjector =\n        ngModule ? createChainedInjector(injector, ngModule.injector) : injector;\n\n    const rendererFactory =\n        rootViewInjector.get(RendererFactory2, domRendererFactory3) as RendererFactory3;\n    const sanitizer = rootViewInjector.get(Sanitizer, null);\n\n    const hostRenderer = rendererFactory.createRenderer(null, this.componentDef);\n    // Determine a tag name used for creating host elements when this component is created\n    // dynamically. Default to 'div' if this component did not specify any tag name in its selector.\n    const elementName = this.componentDef.selectors[0][0] as string || 'div';\n    const hostRNode = rootSelectorOrNode ?\n        locateHostElement(hostRenderer, rootSelectorOrNode, this.componentDef.encapsulation) :\n        elementCreate(\n            elementName, rendererFactory.createRenderer(null, this.componentDef),\n            getNamespace(elementName));\n\n    const rootFlags = this.componentDef.onPush ? LViewFlags.Dirty | LViewFlags.IsRoot :\n                                                 LViewFlags.CheckAlways | LViewFlags.IsRoot;\n\n    // Check whether this Component needs to be isolated from other components, i.e. whether it\n    // should be placed into its own (empty) root context or existing root context should be used.\n    // Note: this is internal-only convention and might change in the future, so it should not be\n    // relied upon externally.\n    const isIsolated = typeof rootSelectorOrNode === 'string' &&\n        /^#root-ng-internal-isolated-\\d+/.test(rootSelectorOrNode);\n\n    const rootContext = createRootContext();\n\n    // Create the root view. Uses empty TView and ContentTemplate.\n    const rootTView = createTView(TViewType.Root, -1, null, 1, 0, null, null, null, null, null);\n    const rootLView = createLView(\n        null, rootTView, rootContext, rootFlags, null, null, rendererFactory, hostRenderer,\n        sanitizer, rootViewInjector);\n\n    // rootView is the parent when bootstrapping\n    // TODO(misko): it looks like we are entering view here but we don't really need to as\n    // `renderView` does that. However as the code is written it is needed because\n    // `createRootComponentView` and `createRootComponent` both read global state. Fixing those\n    // issues would allow us to drop this.\n    enterView(rootLView, null);\n\n    let component: T;\n    let tElementNode: TElementNode;\n\n    try {\n      const componentView = createRootComponentView(\n          hostRNode, this.componentDef, rootLView, rendererFactory, hostRenderer);\n      if (hostRNode) {\n        if (rootSelectorOrNode) {\n          setUpAttributes(hostRenderer, hostRNode, ['ng-version', VERSION.full]);\n        } else {\n          // If host element is created as a part of this function call (i.e. `rootSelectorOrNode`\n          // is not defined), also apply attributes and classes extracted from component selector.\n          // Extract attributes and classes from the first selector only to match VE behavior.\n          const {attrs, classes} =\n              extractAttrsAndClassesFromSelector(this.componentDef.selectors[0]);\n          if (attrs) {\n            setUpAttributes(hostRenderer, hostRNode, attrs);\n          }\n          if (classes && classes.length > 0) {\n            writeDirectClass(hostRenderer, hostRNode, classes.join(' '));\n          }\n        }\n      }\n\n      tElementNode = getTNode(rootTView, 0) as TElementNode;\n\n      if (projectableNodes !== undefined) {\n        const projection: (TNode|RNode[]|null)[] = tElementNode.projection = [];\n        for (let i = 0; i < this.ngContentSelectors.length; i++) {\n          const nodesforSlot = projectableNodes[i];\n          // Projectable nodes can be passed as array of arrays or an array of iterables (ngUpgrade\n          // case). Here we do normalize passed data structure to be an array of arrays to avoid\n          // complex checks down the line.\n          // We also normalize the length of the passed in projectable nodes (to match the number of\n          // <ng-container> slots defined by a component).\n          projection.push(nodesforSlot != null ? Array.from(nodesforSlot) : null);\n        }\n      }\n\n      // TODO: should LifecycleHooksFeature and other host features be generated by the compiler and\n      // executed here?\n      // Angular 5 reference: https://stackblitz.com/edit/lifecycle-hooks-vcref\n      component = createRootComponent(\n          componentView, this.componentDef, rootLView, rootContext, [LifecycleHooksFeature]);\n\n      renderView(rootTView, rootLView, null);\n    } finally {\n      leaveView();\n    }\n\n    const componentRef = new ComponentRef(\n        this.componentType, component,\n        createElementRef(viewEngine_ElementRef, tElementNode, rootLView), rootLView, tElementNode);\n\n    if (!rootSelectorOrNode || isIsolated) {\n      // The host element of the internal or isolated root view is attached to the component's host\n      // view node.\n      ngDevMode && assertNodeOfPossibleTypes(rootTView.node, TNodeType.View);\n      rootTView.node!.child = tElementNode;\n    }\n    return componentRef;\n  }\n}\n\nconst componentFactoryResolver: ComponentFactoryResolver = new ComponentFactoryResolver();\n\n/**\n * Creates a ComponentFactoryResolver and stores it on the injector. Or, if the\n * ComponentFactoryResolver\n * already exists, retrieves the existing ComponentFactoryResolver.\n *\n * @returns The ComponentFactoryResolver instance to use\n */\nexport function injectComponentFactoryResolver(): viewEngine_ComponentFactoryResolver {\n  return componentFactoryResolver;\n}\n\n/**\n * Represents an instance of a Component created via a {@link ComponentFactory}.\n *\n * `ComponentRef` provides access to the Component Instance as well other objects related to this\n * Component Instance and allows you to destroy the Component Instance via the {@link #destroy}\n * method.\n *\n */\nexport class ComponentRef<T> extends viewEngine_ComponentRef<T> {\n  destroyCbs: (() => void)[]|null = [];\n  instance: T;\n  hostView: ViewRef<T>;\n  changeDetectorRef: ViewEngine_ChangeDetectorRef;\n  componentType: Type<T>;\n\n  constructor(\n      componentType: Type<T>, instance: T, public location: viewEngine_ElementRef,\n      private _rootLView: LView,\n      private _tNode: TElementNode|TContainerNode|TElementContainerNode) {\n    super();\n    this.instance = instance;\n    this.hostView = this.changeDetectorRef = new RootViewRef<T>(_rootLView);\n    assignTViewNodeToLView(_rootLView[TVIEW], null, -1, _rootLView);\n    this.componentType = componentType;\n  }\n\n  get injector(): Injector {\n    return new NodeInjector(this._tNode, this._rootLView);\n  }\n\n  destroy(): void {\n    if (this.destroyCbs) {\n      this.destroyCbs.forEach(fn => fn());\n      this.destroyCbs = null;\n      !this.hostView.destroyed && this.hostView.destroy();\n    }\n  }\n\n  onDestroy(callback: () => void): void {\n    if (this.destroyCbs) {\n      this.destroyCbs.push(callback);\n    }\n  }\n}\n"]}