Method createEmbeddedView

packages/core/src/render3/queries/query.ts:50–71

(tView: TView)

  constructor(public queries: LQuery<any>[] = []) {}

  createEmbeddedView(tView: TView): LQueries | null {
    const tQueries = tView.queries;
    if (tQueries !== null) {
      const noOfInheritedQueries =
        tView.contentQueries !== null ? tView.contentQueries[0] : tQueries.length;
      const viewLQueries: LQuery<any>[] = [];

      // An embedded view has queries propagated from a declaration view at the beginning of the
      // TQueries collection and up until a first content query declared in the embedded view. Only
      // propagated LQueries are created at this point (LQuery corresponding to declared content
      // queries will be instantiated from the content query instructions for each directive).
      for (let i = 0; i < noOfInheritedQueries; i++) {
        const tQuery = tQueries.getByIndex(i);
        const parentLQuery = this.queries[tQuery.indexInDeclarationView];
        viewLQueries.push(parentLQuery.clone());
      }

      return new LQueries_(viewLQueries);
    }

    return null;
  }

  insertView(tView: TView): void {
    this.dirtyQueriesWithMatches(tView);