64 lines
1.9 KiB
TypeScript
64 lines
1.9 KiB
TypeScript
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/**
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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 {QueryList} from '../../linker';
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import {Type} from '../../type';
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import {LContainerNode, LNode, LViewNode} from './node';
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/** Used for tracking queries (e.g. ViewChild, ContentChild). */
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export interface LQuery {
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/**
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* Used to ask query if it should be cloned to the child element.
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*
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* For example in the case of deep queries the `child()` returns
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* query for the child node. In case of shallow queries it returns
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* `null`.
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*/
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child(): LQuery|null;
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/**
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* Notify `LQuery` that a `LNode` has been created.
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*/
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addNode(node: LNode): void;
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/**
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* Notify `LQuery` that an `LViewNode` has been added to `LContainerNode`.
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*/
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insertView(container: LContainerNode, view: LViewNode, insertIndex: number): void;
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/**
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* Notify `LQuery` that an `LViewNode` has been removed from `LContainerNode`.
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*/
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removeView(container: LContainerNode, view: LViewNode, removeIndex: number): void;
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/**
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* Add additional `QueryList` to track.
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*
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* @param queryList `QueryList` to update with changes.
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* @param predicate Either `Type` or selector array of [key, value] predicates.
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* @param descend If true the query will recursively apply to the children.
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* @param read Indicates which token should be read from DI for this query.
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*/
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track<T>(
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queryList: QueryList<T>, predicate: Type<any>|string[], descend?: boolean,
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read?: QueryReadType|Type<T>): void;
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}
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/** An enum representing possible values of the "read" option for queries. */
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export const enum QueryReadType {
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ElementRef = 0,
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ViewContainerRef = 1,
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TemplateRef = 2,
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}
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// Note: This hack is necessary so we don't erroneously get a circular dependency
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// failure based on types.
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export const unusedValueExportToPlacateAjd = 1;
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