d6382bfa0b
This commit effectively reverts 7e0f02f96e59863dff563cb7036c21aa58220a67 as it was an invalid fix for #6385, that created a more significant bug, which was that changes were not always being detected. Angular 1 digests should be run inside the ngZone to ensure that async changes are detected. We don't know how to fix #6385 without breaking change detection at this stage. That issue is triggered by async operations, such as `setTimeout`, being triggered inside scope watcher functions. One could argue that watcher functions should be pure and not do work such as triggering async operations. It is possible that the original use case could be supported by moving the debounce logic into the watch listener function, which is only called if the watched value actually changes. Closes #10660, #12318, #12034 PR Close #13812
799 lines
30 KiB
TypeScript
799 lines
30 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {CssSelector, SelectorMatcher, createElementCssSelector} from '@angular/compiler';
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import {Compiler, CompilerOptions, ComponentFactory, Injector, NgModule, NgModuleRef, NgZone, Provider, Testability, Type} from '@angular/core';
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import {platformBrowserDynamic} from '@angular/platform-browser-dynamic';
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import * as angular from './angular_js';
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import {NG1_COMPILE, NG1_INJECTOR, NG1_PARSE, NG1_ROOT_SCOPE, NG1_TESTABILITY, NG2_COMPILER, NG2_COMPONENT_FACTORY_REF_MAP, NG2_INJECTOR, NG2_ZONE, REQUIRE_INJECTOR} from './constants';
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import {DowngradeNg2ComponentAdapter} from './downgrade_ng2_adapter';
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import {ComponentInfo, getComponentInfo} from './metadata';
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import {UpgradeNg1ComponentAdapterBuilder} from './upgrade_ng1_adapter';
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import {Deferred, controllerKey, getAttributesAsArray, onError} from './util';
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let upgradeCount: number = 0;
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/**
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* Use `UpgradeAdapter` to allow Angular 1 and Angular 2+ to coexist in a single application.
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*
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* The `UpgradeAdapter` allows:
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* 1. creation of Angular 2+ component from Angular 1 component directive
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* (See [UpgradeAdapter#upgradeNg1Component()])
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* 2. creation of Angular 1 directive from Angular 2+ component.
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* (See [UpgradeAdapter#downgradeNg2Component()])
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* 3. Bootstrapping of a hybrid Angular application which contains both of the frameworks
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* coexisting in a single application.
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*
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* ## Mental Model
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*
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* When reasoning about how a hybrid application works it is useful to have a mental model which
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* describes what is happening and explains what is happening at the lowest level.
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*
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* 1. There are two independent frameworks running in a single application, each framework treats
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* the other as a black box.
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* 2. Each DOM element on the page is owned exactly by one framework. Whichever framework
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* instantiated the element is the owner. Each framework only updates/interacts with its own
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* DOM elements and ignores others.
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* 3. Angular 1 directives always execute inside Angular 1 framework codebase regardless of
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* where they are instantiated.
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* 4. Angular 2+ components always execute inside Angular 2+ framework codebase regardless of
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* where they are instantiated.
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* 5. An Angular 1 component can be upgraded to an Angular 2+ component. This creates an
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* Angular 2+ directive, which bootstraps the Angular 1 component directive in that location.
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* 6. An Angular 2+ component can be downgraded to an Angular 1 component directive. This creates
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* an Angular 1 directive, which bootstraps the Angular 2+ component in that location.
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* 7. Whenever an adapter component is instantiated the host element is owned by the framework
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* doing the instantiation. The other framework then instantiates and owns the view for that
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* component. This implies that component bindings will always follow the semantics of the
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* instantiation framework. The syntax is always that of Angular 2+ syntax.
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* 8. Angular 1 is always bootstrapped first and owns the bottom most view.
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* 9. The new application is running in Angular 2+ zone, and therefore it no longer needs calls to
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* `$apply()`.
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*
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* ### Example
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*
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* ```
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* const adapter = new UpgradeAdapter(forwardRef(() => MyNg2Module), myCompilerOptions);
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* const module = angular.module('myExample', []);
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* module.directive('ng2Comp', adapter.downgradeNg2Component(Ng2Component));
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*
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* module.directive('ng1Hello', function() {
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* return {
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* scope: { title: '=' },
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* template: 'ng1[Hello {{title}}!](<span ng-transclude></span>)'
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* };
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* });
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*
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*
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* @Component({
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* selector: 'ng2-comp',
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* inputs: ['name'],
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* template: 'ng2[<ng1-hello [title]="name">transclude</ng1-hello>](<ng-content></ng-content>)',
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* directives:
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* })
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* class Ng2Component {
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* }
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*
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* @NgModule({
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* declarations: [Ng2Component, adapter.upgradeNg1Component('ng1Hello')],
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* imports: [BrowserModule]
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* })
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* class MyNg2Module {}
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*
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*
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* document.body.innerHTML = '<ng2-comp name="World">project</ng2-comp>';
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*
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* adapter.bootstrap(document.body, ['myExample']).ready(function() {
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* expect(document.body.textContent).toEqual(
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* "ng2[ng1[Hello World!](transclude)](project)");
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* });
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*
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* ```
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*
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* @stable
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*/
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export class UpgradeAdapter {
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private idPrefix: string = `NG2_UPGRADE_${upgradeCount++}_`;
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private upgradedComponents: Type<any>[] = [];
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/**
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* An internal map of ng1 components which need to up upgraded to ng2.
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*
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* We can't upgrade until injector is instantiated and we can retrieve the component metadata.
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* For this reason we keep a list of components to upgrade until ng1 injector is bootstrapped.
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*
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* @internal
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*/
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private ng1ComponentsToBeUpgraded: {[name: string]: UpgradeNg1ComponentAdapterBuilder} = {};
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private providers: Provider[] = [];
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private ngZone: NgZone;
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private ng1Module: angular.IModule;
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private moduleRef: NgModuleRef<any> = null;
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private ng2BootstrapDeferred: Deferred<angular.IInjectorService>;
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constructor(private ng2AppModule: Type<any>, private compilerOptions?: CompilerOptions) {
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if (!ng2AppModule) {
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throw new Error(
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'UpgradeAdapter cannot be instantiated without an NgModule of the Angular 2 app.');
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}
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}
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/**
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* Allows Angular 2+ Component to be used from Angular 1.
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*
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* Use `downgradeNg2Component` to create an Angular 1 Directive Definition Factory from
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* Angular 2+ Component. The adapter will bootstrap Angular 2+ component from within the
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* Angular 1 template.
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*
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* ## Mental Model
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*
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* 1. The component is instantiated by being listed in Angular 1 template. This means that the
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* host element is controlled by Angular 1, but the component's view will be controlled by
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* Angular 2+.
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* 2. Even thought the component is instantiated in Angular 1, it will be using Angular 2+
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* syntax. This has to be done, this way because we must follow Angular 2+ components do not
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* declare how the attributes should be interpreted.
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*
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* ## Supported Features
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*
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* - Bindings:
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* - Attribute: `<comp name="World">`
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* - Interpolation: `<comp greeting="Hello {{name}}!">`
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* - Expression: `<comp [name]="username">`
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* - Event: `<comp (close)="doSomething()">`
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* - Content projection: yes
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*
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* ### Example
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*
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* ```
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* const adapter = new UpgradeAdapter(forwardRef(() => MyNg2Module));
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* const module = angular.module('myExample', []);
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* module.directive('greet', adapter.downgradeNg2Component(Greeter));
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*
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* @Component({
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* selector: 'greet',
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* template: '{{salutation}} {{name}}! - <ng-content></ng-content>'
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* })
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* class Greeter {
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* @Input() salutation: string;
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* @Input() name: string;
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* }
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*
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* @NgModule({
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* declarations: [Greeter],
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* imports: [BrowserModule]
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* })
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* class MyNg2Module {}
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*
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* document.body.innerHTML =
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* 'ng1 template: <greet salutation="Hello" [name]="world">text</greet>';
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*
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* adapter.bootstrap(document.body, ['myExample']).ready(function() {
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* expect(document.body.textContent).toEqual("ng1 template: Hello world! - text");
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* });
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* ```
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*/
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downgradeNg2Component(type: Type<any>): Function {
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this.upgradedComponents.push(type);
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const info: ComponentInfo = getComponentInfo(type);
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return ng1ComponentDirective(info, `${this.idPrefix}${info.selector}_c`);
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}
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/**
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* Allows Angular 1 Component to be used from Angular 2+.
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*
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* Use `upgradeNg1Component` to create an Angular 2+ component from Angular 1 Component
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* directive. The adapter will bootstrap Angular 1 component from within the Angular 2+
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* template.
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*
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* ## Mental Model
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*
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* 1. The component is instantiated by being listed in Angular 2+ template. This means that the
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* host element is controlled by Angular 2+, but the component's view will be controlled by
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* Angular 1.
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*
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* ## Supported Features
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*
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* - Bindings:
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* - Attribute: `<comp name="World">`
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* - Interpolation: `<comp greeting="Hello {{name}}!">`
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* - Expression: `<comp [name]="username">`
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* - Event: `<comp (close)="doSomething()">`
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* - Transclusion: yes
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* - Only some of the features of
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* [Directive Definition Object](https://docs.angularjs.org/api/ng/service/$compile) are
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* supported:
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* - `compile`: not supported because the host element is owned by Angular 2+, which does
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* not allow modifying DOM structure during compilation.
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* - `controller`: supported. (NOTE: injection of `$attrs` and `$transclude` is not supported.)
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* - `controllerAs`: supported.
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* - `bindToController`: supported.
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* - `link`: supported. (NOTE: only pre-link function is supported.)
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* - `name`: supported.
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* - `priority`: ignored.
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* - `replace`: not supported.
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* - `require`: supported.
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* - `restrict`: must be set to 'E'.
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* - `scope`: supported.
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* - `template`: supported.
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* - `templateUrl`: supported.
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* - `terminal`: ignored.
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* - `transclude`: supported.
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*
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*
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* ### Example
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*
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* ```
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* const adapter = new UpgradeAdapter(forwardRef(() => MyNg2Module));
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* const module = angular.module('myExample', []);
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*
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* module.directive('greet', function() {
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* return {
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* scope: {salutation: '=', name: '=' },
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* template: '{{salutation}} {{name}}! - <span ng-transclude></span>'
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* };
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* });
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*
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* module.directive('ng2', adapter.downgradeNg2Component(Ng2Component));
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*
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* @Component({
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* selector: 'ng2',
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* template: 'ng2 template: <greet salutation="Hello" [name]="world">text</greet>'
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* })
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* class Ng2Component {
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* }
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*
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* @NgModule({
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* declarations: [Ng2Component, adapter.upgradeNg1Component('greet')],
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* imports: [BrowserModule]
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* })
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* class MyNg2Module {}
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*
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* document.body.innerHTML = '<ng2></ng2>';
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*
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* adapter.bootstrap(document.body, ['myExample']).ready(function() {
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* expect(document.body.textContent).toEqual("ng2 template: Hello world! - text");
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* });
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* ```
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*/
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upgradeNg1Component(name: string): Type<any> {
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if ((<any>this.ng1ComponentsToBeUpgraded).hasOwnProperty(name)) {
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return this.ng1ComponentsToBeUpgraded[name].type;
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} else {
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return (this.ng1ComponentsToBeUpgraded[name] = new UpgradeNg1ComponentAdapterBuilder(name))
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.type;
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}
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}
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/**
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* Registers the adapter's Angular 1 upgrade module for unit testing in Angular 1.
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* Use this instead of `angular.mock.module()` to load the upgrade module into
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* the Angular 1 testing injector.
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*
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* ### Example
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*
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* ```
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* const upgradeAdapter = new UpgradeAdapter(MyNg2Module);
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*
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* // configure the adapter with upgrade/downgrade components and services
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* upgradeAdapter.downgradeNg2Component(MyComponent);
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*
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* let upgradeAdapterRef: UpgradeAdapterRef;
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* let $compile, $rootScope;
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*
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* // We must register the adapter before any calls to `inject()`
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* beforeEach(() => {
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* upgradeAdapterRef = upgradeAdapter.registerForNg1Tests(['heroApp']);
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* });
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*
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* beforeEach(inject((_$compile_, _$rootScope_) => {
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* $compile = _$compile_;
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* $rootScope = _$rootScope_;
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* }));
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*
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* it("says hello", (done) => {
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* upgradeAdapterRef.ready(() => {
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* const element = $compile("<my-component></my-component>")($rootScope);
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* $rootScope.$apply();
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* expect(element.html()).toContain("Hello World");
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* done();
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* })
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* });
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*
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* ```
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*
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* @param modules any Angular 1 modules that the upgrade module should depend upon
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* @returns an {@link UpgradeAdapterRef}, which lets you register a `ready()` callback to
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* run assertions once the Angular 2+ components are ready to test through Angular 1.
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*/
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registerForNg1Tests(modules?: string[]): UpgradeAdapterRef {
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const windowNgMock = (window as any)['angular'].mock;
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if (!windowNgMock || !windowNgMock.module) {
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throw new Error('Failed to find \'angular.mock.module\'.');
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}
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this.declareNg1Module(modules);
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windowNgMock.module(this.ng1Module.name);
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const upgrade = new UpgradeAdapterRef();
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this.ng2BootstrapDeferred.promise.then(
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(ng1Injector) => { (<any>upgrade)._bootstrapDone(this.moduleRef, ng1Injector); }, onError);
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return upgrade;
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}
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/**
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* Bootstrap a hybrid Angular 1 / Angular 2+ application.
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*
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* This `bootstrap` method is a direct replacement (takes same arguments) for Angular 1
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* [`bootstrap`](https://docs.angularjs.org/api/ng/function/angular.bootstrap) method. Unlike
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* Angular 1, this bootstrap is asynchronous.
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*
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* ### Example
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*
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* ```
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* const adapter = new UpgradeAdapter(MyNg2Module);
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* const module = angular.module('myExample', []);
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* module.directive('ng2', adapter.downgradeNg2Component(Ng2));
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*
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* module.directive('ng1', function() {
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* return {
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* scope: { title: '=' },
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* template: 'ng1[Hello {{title}}!](<span ng-transclude></span>)'
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* };
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* });
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*
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*
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* @Component({
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* selector: 'ng2',
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* inputs: ['name'],
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* template: 'ng2[<ng1 [title]="name">transclude</ng1>](<ng-content></ng-content>)'
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* })
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* class Ng2 {
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* }
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*
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* @NgModule({
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* declarations: [Ng2, adapter.upgradeNg1Component('ng1')],
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* imports: [BrowserModule]
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* })
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* class MyNg2Module {}
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*
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* document.body.innerHTML = '<ng2 name="World">project</ng2>';
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*
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* adapter.bootstrap(document.body, ['myExample']).ready(function() {
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* expect(document.body.textContent).toEqual(
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* "ng2[ng1[Hello World!](transclude)](project)");
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* });
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* ```
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*/
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bootstrap(element: Element, modules?: any[], config?: angular.IAngularBootstrapConfig):
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UpgradeAdapterRef {
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this.declareNg1Module(modules);
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const upgrade = new UpgradeAdapterRef();
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// Make sure resumeBootstrap() only exists if the current bootstrap is deferred
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const windowAngular = (window as any /** TODO #???? */)['angular'];
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windowAngular.resumeBootstrap = undefined;
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this.ngZone.run(() => { angular.bootstrap(element, [this.ng1Module.name], config); });
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const ng1BootstrapPromise = new Promise((resolve) => {
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if (windowAngular.resumeBootstrap) {
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const originalResumeBootstrap: () => void = windowAngular.resumeBootstrap;
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windowAngular.resumeBootstrap = function() {
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windowAngular.resumeBootstrap = originalResumeBootstrap;
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windowAngular.resumeBootstrap.apply(this, arguments);
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resolve();
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};
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} else {
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resolve();
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}
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});
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Promise.all([this.ng2BootstrapDeferred.promise, ng1BootstrapPromise]).then(([ng1Injector]) => {
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angular.element(element).data(controllerKey(NG2_INJECTOR), this.moduleRef.injector);
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this.moduleRef.injector.get(NgZone).run(
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() => { (<any>upgrade)._bootstrapDone(this.moduleRef, ng1Injector); });
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}, onError);
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return upgrade;
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}
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|
|
/**
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* Allows Angular 1 service to be accessible from Angular 2+.
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*
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*
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* ### Example
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*
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* ```
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* class Login { ... }
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* class Server { ... }
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*
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* @Injectable()
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* class Example {
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* constructor(@Inject('server') server, login: Login) {
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* ...
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* }
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* }
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*
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* const module = angular.module('myExample', []);
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* module.service('server', Server);
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* module.service('login', Login);
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*
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* const adapter = new UpgradeAdapter(MyNg2Module);
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* adapter.upgradeNg1Provider('server');
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* adapter.upgradeNg1Provider('login', {asToken: Login});
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*
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* adapter.bootstrap(document.body, ['myExample']).ready((ref) => {
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* const example: Example = ref.ng2Injector.get(Example);
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* });
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*
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* ```
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*/
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public upgradeNg1Provider(name: string, options?: {asToken: any}) {
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const token = options && options.asToken || name;
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this.providers.push({
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provide: token,
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useFactory: (ng1Injector: angular.IInjectorService) => ng1Injector.get(name),
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deps: [NG1_INJECTOR]
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});
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}
|
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|
|
/**
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* Allows Angular 2+ service to be accessible from Angular 1.
|
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*
|
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*
|
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* ### Example
|
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*
|
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* ```
|
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* class Example {
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* }
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*
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* const adapter = new UpgradeAdapter(MyNg2Module);
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*
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* const module = angular.module('myExample', []);
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* module.factory('example', adapter.downgradeNg2Provider(Example));
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*
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* adapter.bootstrap(document.body, ['myExample']).ready((ref) => {
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* const example: Example = ref.ng1Injector.get('example');
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* });
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*
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* ```
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*/
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public downgradeNg2Provider(token: any): Function {
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const factory = function(injector: Injector) { return injector.get(token); };
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(<any>factory).$inject = [NG2_INJECTOR];
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return factory;
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}
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/**
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* Declare the Angular 1 upgrade module for this adapter without bootstrapping the whole
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* hybrid application.
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*
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* This method is automatically called by `bootstrap()` and `registerForNg1Tests()`.
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*
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* @param modules The Angular 1 modules that this upgrade module should depend upon.
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* @returns The Angular 1 upgrade module that is declared by this method
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*
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* ### Example
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*
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* ```
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* const upgradeAdapter = new UpgradeAdapter(MyNg2Module);
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* upgradeAdapter.declareNg1Module(['heroApp']);
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* ```
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*/
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private declareNg1Module(modules: string[] = []): angular.IModule {
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const delayApplyExps: Function[] = [];
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let original$applyFn: Function;
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let rootScopePrototype: any;
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let rootScope: angular.IRootScopeService;
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const componentFactoryRefMap: ComponentFactoryRefMap = {};
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const upgradeAdapter = this;
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const ng1Module = this.ng1Module = angular.module(this.idPrefix, modules);
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const platformRef = platformBrowserDynamic();
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this.ngZone = new NgZone({enableLongStackTrace: Zone.hasOwnProperty('longStackTraceZoneSpec')});
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this.ng2BootstrapDeferred = new Deferred();
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ng1Module.factory(NG2_INJECTOR, () => this.moduleRef.injector.get(Injector))
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.constant(NG2_ZONE, this.ngZone)
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.constant(NG2_COMPONENT_FACTORY_REF_MAP, componentFactoryRefMap)
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.factory(NG2_COMPILER, () => this.moduleRef.injector.get(Compiler))
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.config([
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'$provide', '$injector',
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(provide: angular.IProvideService, ng1Injector: angular.IInjectorService) => {
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provide.decorator(NG1_ROOT_SCOPE, [
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'$delegate',
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function(rootScopeDelegate: angular.IRootScopeService) {
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// Capture the root apply so that we can delay first call to $apply until we
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// bootstrap Angular 2 and then we replay and restore the $apply.
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rootScopePrototype = rootScopeDelegate.constructor.prototype;
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if (rootScopePrototype.hasOwnProperty('$apply')) {
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original$applyFn = rootScopePrototype.$apply;
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rootScopePrototype.$apply = (exp: any) => delayApplyExps.push(exp);
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} else {
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throw new Error('Failed to find \'$apply\' on \'$rootScope\'!');
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}
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return rootScope = rootScopeDelegate;
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}
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]);
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if (ng1Injector.has(NG1_TESTABILITY)) {
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provide.decorator(NG1_TESTABILITY, [
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'$delegate',
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function(testabilityDelegate: angular.ITestabilityService) {
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const originalWhenStable: Function = testabilityDelegate.whenStable;
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// Cannot use arrow function below because we need the context
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const newWhenStable = function(callback: Function) {
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originalWhenStable.call(this, function() {
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const ng2Testability: Testability =
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upgradeAdapter.moduleRef.injector.get(Testability);
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if (ng2Testability.isStable()) {
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callback.apply(this, arguments);
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} else {
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ng2Testability.whenStable(newWhenStable.bind(this, callback));
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}
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});
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};
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testabilityDelegate.whenStable = newWhenStable;
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return testabilityDelegate;
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}
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]);
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}
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}
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]);
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ng1Module.run([
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'$injector', '$rootScope',
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(ng1Injector: angular.IInjectorService, rootScope: angular.IRootScopeService) => {
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UpgradeNg1ComponentAdapterBuilder.resolve(this.ng1ComponentsToBeUpgraded, ng1Injector)
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.then(() => {
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// At this point we have ng1 injector and we have lifted ng1 components into ng2, we
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// now can bootstrap ng2.
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const DynamicNgUpgradeModule =
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NgModule({
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providers: [
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{provide: NG1_INJECTOR, useFactory: () => ng1Injector},
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{provide: NG1_COMPILE, useFactory: () => ng1Injector.get(NG1_COMPILE)},
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this.providers
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],
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imports: [this.ng2AppModule]
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}).Class({
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constructor: function DynamicNgUpgradeModule() {},
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ngDoBootstrap: function() {}
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});
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(platformRef as any)
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._bootstrapModuleWithZone(
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DynamicNgUpgradeModule, this.compilerOptions, this.ngZone,
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(componentFactories: ComponentFactory<any>[]) => {
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componentFactories.forEach((componentFactory) => {
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const type: Type<any> = componentFactory.componentType;
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if (this.upgradedComponents.indexOf(type) !== -1) {
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componentFactoryRefMap[getComponentInfo(type).selector] =
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componentFactory;
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}
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});
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})
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.then((ref: NgModuleRef<any>) => {
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this.moduleRef = ref;
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this.ngZone.run(() => {
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if (rootScopePrototype) {
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rootScopePrototype.$apply = original$applyFn; // restore original $apply
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while (delayApplyExps.length) {
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rootScope.$apply(delayApplyExps.shift());
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}
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rootScopePrototype = null;
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}
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});
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})
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.then(() => this.ng2BootstrapDeferred.resolve(ng1Injector), onError)
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.then(() => {
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let subscription =
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this.ngZone.onMicrotaskEmpty.subscribe({next: () => rootScope.$digest()});
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rootScope.$on('$destroy', () => { subscription.unsubscribe(); });
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});
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})
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.catch((e) => this.ng2BootstrapDeferred.reject(e));
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}
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]);
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return ng1Module;
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}
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}
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interface ComponentFactoryRefMap {
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[selector: string]: ComponentFactory<any>;
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}
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/**
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* Synchronous promise-like object to wrap parent injectors,
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* to preserve the synchronous nature of Angular 1's $compile.
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*/
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class ParentInjectorPromise {
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private injector: Injector;
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private callbacks: ((injector: Injector) => any)[] = [];
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constructor(private element: angular.IAugmentedJQuery) {
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// store the promise on the element
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element.data(controllerKey(NG2_INJECTOR), this);
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}
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then(callback: (injector: Injector) => any) {
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if (this.injector) {
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callback(this.injector);
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} else {
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this.callbacks.push(callback);
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}
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}
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resolve(injector: Injector) {
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this.injector = injector;
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// reset the element data to point to the real injector
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this.element.data(controllerKey(NG2_INJECTOR), injector);
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// clean out the element to prevent memory leaks
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this.element = null;
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// run all the queued callbacks
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this.callbacks.forEach((callback) => callback(injector));
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this.callbacks.length = 0;
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}
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}
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function ng1ComponentDirective(info: ComponentInfo, idPrefix: string): Function {
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(<any>directiveFactory).$inject =
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[NG1_INJECTOR, NG1_COMPILE, NG2_COMPONENT_FACTORY_REF_MAP, NG1_PARSE];
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function directiveFactory(
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ng1Injector: angular.IInjectorService, ng1Compile: angular.ICompileService,
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componentFactoryRefMap: ComponentFactoryRefMap,
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parse: angular.IParseService): angular.IDirective {
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let idCount = 0;
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let dashSelector = info.selector.replace(/[A-Z]/g, char => '-' + char.toLowerCase());
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return {
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restrict: 'E',
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terminal: true,
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require: REQUIRE_INJECTOR,
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compile: (templateElement: angular.IAugmentedJQuery, templateAttributes: angular.IAttributes,
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transclude: angular.ITranscludeFunction) => {
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// We might have compile the contents lazily, because this might have been triggered by the
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// UpgradeNg1ComponentAdapterBuilder, when the ng2 templates have not been compiled yet
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return {
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post: (scope: angular.IScope, element: angular.IAugmentedJQuery,
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attrs: angular.IAttributes, parentInjector: Injector | ParentInjectorPromise,
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transclude: angular.ITranscludeFunction): void => {
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let id = idPrefix + (idCount++);
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(<any>element[0]).id = id;
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let injectorPromise = new ParentInjectorPromise(element);
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const ng2Compiler = ng1Injector.get(NG2_COMPILER) as Compiler;
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const ngContentSelectors = ng2Compiler.getNgContentSelectors(info.type);
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const linkFns = compileProjectedNodes(templateElement, ngContentSelectors);
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const componentFactory: ComponentFactory<any> = componentFactoryRefMap[info.selector];
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if (!componentFactory)
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throw new Error('Expecting ComponentFactory for: ' + info.selector);
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element.empty();
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let projectableNodes = linkFns.map(link => {
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let projectedClone: Node[];
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link(scope, (clone: Node[]) => {
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projectedClone = clone;
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element.append(clone);
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});
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return projectedClone;
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});
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parentInjector = parentInjector || ng1Injector.get(NG2_INJECTOR);
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if (parentInjector instanceof ParentInjectorPromise) {
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parentInjector.then((resolvedInjector: Injector) => downgrade(resolvedInjector));
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} else {
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downgrade(parentInjector);
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}
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function downgrade(injector: Injector) {
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const facade = new DowngradeNg2ComponentAdapter(
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info, element, attrs, scope, injector, parse, componentFactory);
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facade.setupInputs();
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facade.bootstrapNg2(projectableNodes);
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facade.setupOutputs();
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facade.registerCleanup();
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injectorPromise.resolve(facade.componentRef.injector);
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}
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}
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};
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}
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};
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function compileProjectedNodes(
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templateElement: angular.IAugmentedJQuery,
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ngContentSelectors: string[]): angular.ILinkFn[] {
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if (!ngContentSelectors)
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throw new Error('Expecting ngContentSelectors for: ' + info.selector);
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// We have to sort the projected content before we compile it, hence the terminal: true
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let projectableTemplateNodes =
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sortProjectableNodes(ngContentSelectors, templateElement.contents());
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return projectableTemplateNodes.map(nodes => ng1Compile(nodes));
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}
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}
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return directiveFactory;
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}
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/**
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* Use `UpgradeAdapterRef` to control a hybrid Angular 1 / Angular 2+ application.
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*
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* @stable
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*/
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export class UpgradeAdapterRef {
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/* @internal */
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private _readyFn: (upgradeAdapterRef?: UpgradeAdapterRef) => void = null;
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public ng1RootScope: angular.IRootScopeService = null;
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public ng1Injector: angular.IInjectorService = null;
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public ng2ModuleRef: NgModuleRef<any> = null;
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public ng2Injector: Injector = null;
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/* @internal */
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private _bootstrapDone(ngModuleRef: NgModuleRef<any>, ng1Injector: angular.IInjectorService) {
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this.ng2ModuleRef = ngModuleRef;
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this.ng2Injector = ngModuleRef.injector;
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this.ng1Injector = ng1Injector;
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this.ng1RootScope = ng1Injector.get(NG1_ROOT_SCOPE);
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this._readyFn && this._readyFn(this);
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}
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/**
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* Register a callback function which is notified upon successful hybrid Angular 1 / Angular 2+
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* application has been bootstrapped.
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*
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* The `ready` callback function is invoked inside the Angular 2+ zone, therefore it does not
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* require a call to `$apply()`.
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*/
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public ready(fn: (upgradeAdapterRef?: UpgradeAdapterRef) => void) { this._readyFn = fn; }
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/**
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* Dispose of running hybrid Angular 1 / Angular 2+ application.
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*/
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public dispose() {
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this.ng1Injector.get(NG1_ROOT_SCOPE).$destroy();
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this.ng2ModuleRef.destroy();
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}
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}
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/**
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* Sort a set of DOM nodes that into groups based on the given content selectors
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*/
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export function sortProjectableNodes(ngContentSelectors: string[], childNodes: Node[]): Node[][] {
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let projectableNodes: Node[][] = [];
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let matcher = new SelectorMatcher();
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let wildcardNgContentIndex: number;
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for (let i = 0, ii = ngContentSelectors.length; i < ii; i++) {
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projectableNodes[i] = [];
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if (ngContentSelectors[i] === '*') {
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wildcardNgContentIndex = i;
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} else {
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matcher.addSelectables(CssSelector.parse(ngContentSelectors[i]), i);
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}
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}
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for (let node of childNodes) {
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let ngContentIndices: number[] = [];
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let selector =
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createElementCssSelector(node.nodeName.toLowerCase(), getAttributesAsArray(node));
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matcher.match(
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selector, (selector, ngContentIndex) => { ngContentIndices.push(ngContentIndex); });
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ngContentIndices.sort();
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if (wildcardNgContentIndex !== undefined) {
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ngContentIndices.push(wildcardNgContentIndex);
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}
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if (ngContentIndices.length > 0) {
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projectableNodes[ngContentIndices[0]].push(node);
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}
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}
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return projectableNodes;
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}
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