5a724b34bd
- moves all publicly exported instructions to their own files - refactors namespace instructions to set state in `state.ts` - no longer exports * from `instructions.ts`. - `instructions.ts` renamed to `shared.ts` (old `shared.ts` contents folded in to `instructions.ts`) - updates `all.ts` to re-export from public instruction files. PR Close #29646
51 lines
1.8 KiB
TypeScript
51 lines
1.8 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 {InjectFlags, InjectionToken, resolveForwardRef} from '../../di';
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import {Type} from '../../interface/type';
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import {getOrCreateInjectable, injectAttributeImpl} from '../di';
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import {TContainerNode, TElementContainerNode, TElementNode} from '../interfaces/node';
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import {getLView, getPreviousOrParentTNode} from '../state';
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/**
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* Returns the value associated to the given token from the injectors.
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*
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* `directiveInject` is intended to be used for directive, component and pipe factories.
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* All other injection use `inject` which does not walk the node injector tree.
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*
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* Usage example (in factory function):
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*
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* class SomeDirective {
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* constructor(directive: DirectiveA) {}
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*
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* static ngDirectiveDef = defineDirective({
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* type: SomeDirective,
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* factory: () => new SomeDirective(directiveInject(DirectiveA))
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* });
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* }
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*
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* @param token the type or token to inject
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* @param flags Injection flags
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* @returns the value from the injector or `null` when not found
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*/
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export function directiveInject<T>(token: Type<T>| InjectionToken<T>): T;
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export function directiveInject<T>(token: Type<T>| InjectionToken<T>, flags: InjectFlags): T;
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export function directiveInject<T>(
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token: Type<T>| InjectionToken<T>, flags = InjectFlags.Default): T|null {
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token = resolveForwardRef(token);
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return getOrCreateInjectable<T>(
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getPreviousOrParentTNode() as TElementNode | TContainerNode | TElementContainerNode,
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getLView(), token, flags);
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}
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/**
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* Facade for the attribute injection from DI.
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*/
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export function injectAttribute(attrNameToInject: string): string|null {
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return injectAttributeImpl(getPreviousOrParentTNode(), attrNameToInject);
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}
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