angular-docs-cn/modules/@angular/compiler/testing/directive_resolver_mock.ts

85 lines
2.6 KiB
TypeScript

/**
* @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 {Compiler, ComponentMetadata, DirectiveMetadata, Injectable, Injector} from '@angular/core';
import {DirectiveResolver} from '../src/directive_resolver';
import {Map} from '../src/facade/collection';
import {Type, isPresent} from '../src/facade/lang';
/**
* An implementation of {@link DirectiveResolver} that allows overriding
* various properties of directives.
*/
@Injectable()
export class MockDirectiveResolver extends DirectiveResolver {
private _providerOverrides = new Map<Type, any[]>();
private viewProviderOverrides = new Map<Type, any[]>();
constructor(private _injector: Injector) { super(); }
private get _compiler(): Compiler { return this._injector.get(Compiler); }
resolve(type: Type): DirectiveMetadata {
var dm = super.resolve(type);
var providerOverrides = this._providerOverrides.get(type);
var viewProviderOverrides = this.viewProviderOverrides.get(type);
var providers = dm.providers;
if (isPresent(providerOverrides)) {
var originalViewProviders: any[] = isPresent(dm.providers) ? dm.providers : [];
providers = originalViewProviders.concat(providerOverrides);
}
if (dm instanceof ComponentMetadata) {
var viewProviders = dm.viewProviders;
if (isPresent(viewProviderOverrides)) {
var originalViewProviders: any[] = isPresent(dm.viewProviders) ? dm.viewProviders : [];
viewProviders = originalViewProviders.concat(viewProviderOverrides);
}
return new ComponentMetadata({
selector: dm.selector,
inputs: dm.inputs,
outputs: dm.outputs,
host: dm.host,
exportAs: dm.exportAs,
moduleId: dm.moduleId,
queries: dm.queries,
changeDetection: dm.changeDetection,
providers: providers,
viewProviders: viewProviders,
precompile: dm.precompile
});
}
return new DirectiveMetadata({
selector: dm.selector,
inputs: dm.inputs,
outputs: dm.outputs,
host: dm.host,
providers: providers,
exportAs: dm.exportAs,
queries: dm.queries
});
}
setProvidersOverride(type: Type, providers: any[]): void {
this._providerOverrides.set(type, providers);
this._compiler.clearCacheFor(type);
}
setViewProvidersOverride(type: Type, viewProviders: any[]): void {
this.viewProviderOverrides.set(type, viewProviders);
this._compiler.clearCacheFor(type);
}
}