1930 lines
68 KiB
TypeScript
1930 lines
68 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 {NgForOfContext} from '@angular/common';
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import {ElementRef, TemplateRef, ViewContainerRef} from '@angular/core';
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import {EventEmitter} from '../..';
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import {QUERY_READ_CONTAINER_REF, QUERY_READ_ELEMENT_REF, QUERY_READ_FROM_NODE, QUERY_READ_TEMPLATE_REF, getOrCreateNodeInjectorForNode, getOrCreateTemplateRef} from '../../src/render3/di';
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import {AttributeMarker, QueryList, defineComponent, defineDirective, detectChanges, injectViewContainerRef} from '../../src/render3/index';
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import {bind, container, containerRefreshEnd, containerRefreshStart, element, elementEnd, elementProperty, elementStart, embeddedViewEnd, embeddedViewStart, load, loadDirective, loadQueryList, registerContentQuery} from '../../src/render3/instructions';
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import {RenderFlags} from '../../src/render3/interfaces/definition';
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import {query, queryRefresh} from '../../src/render3/query';
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import {NgForOf, NgIf, NgTemplateOutlet} from './common_with_def';
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import {ComponentFixture, TemplateFixture, createComponent, createDirective, renderComponent} from './render_util';
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/**
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* Helper function to check if a given candidate object resembles ElementRef
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* @param candidate
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* @returns true if `ElementRef`.
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*/
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function isElementRef(candidate: any): boolean {
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return candidate.nativeElement != null;
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}
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/**
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* Helper function to check if a given candidate object resembles TemplateRef
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* @param candidate
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* @returns true if `TemplateRef`.
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*/
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function isTemplateRef(candidate: any): boolean {
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return candidate.createEmbeddedView != null && candidate.createComponent == null;
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}
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/**
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* Helper function to check if a given candidate object resembles ViewContainerRef
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* @param candidate
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* @returns true if `ViewContainerRef`.
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*/
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function isViewContainerRef(candidate: any): boolean {
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return candidate.createEmbeddedView != null && candidate.createComponent != null;
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}
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describe('query', () => {
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it('should project query children', () => {
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const Child = createComponent('child', function(rf: RenderFlags, ctx: any) {});
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let child1 = null;
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let child2 = null;
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const Cmp = createComponent(
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'cmp',
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function(rf: RenderFlags, ctx: any) {
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/**
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* <child>
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* <child>
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* </child>
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* </child>
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* class Cmp {
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* @ViewChildren(Child) query0;
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* @ViewChildren(Child, {descend: true}) query1;
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* }
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*/
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if (rf & RenderFlags.Create) {
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elementStart(2, 'child');
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{ element(3, 'child'); }
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elementEnd();
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}
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if (rf & RenderFlags.Update) {
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child1 = loadDirective(0);
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child2 = loadDirective(1);
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}
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},
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[Child], [],
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function(rf: RenderFlags, ctx: any) {
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if (rf & RenderFlags.Create) {
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query(0, Child, false);
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query(1, Child, true);
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}
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if (rf & RenderFlags.Update) {
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let tmp: any;
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queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query0 = tmp as QueryList<any>);
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queryRefresh(tmp = load<QueryList<any>>(1)) && (ctx.query1 = tmp as QueryList<any>);
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}
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});
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const parent = renderComponent(Cmp);
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expect((parent.query0 as QueryList<any>).toArray()).toEqual([child1]);
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expect((parent.query1 as QueryList<any>).toArray()).toEqual([child1, child2]);
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});
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describe('predicate', () => {
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describe('types', () => {
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it('should query using type predicate and read a specified token', () => {
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const Child = createDirective('child');
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let elToQuery;
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/**
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* <div child></div>
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* class Cmpt {
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* @ViewChildren(Child, {read: ElementRef}) query;
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* }
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*/
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const Cmpt = createComponent(
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'cmpt',
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function(rf: RenderFlags, ctx: any) {
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if (rf & RenderFlags.Create) {
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elToQuery = elementStart(1, 'div', ['child', '']);
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elementEnd();
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}
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},
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[Child], [],
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function(rf: RenderFlags, ctx: any) {
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if (rf & RenderFlags.Create) {
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query(0, Child, false, QUERY_READ_ELEMENT_REF);
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}
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if (rf & RenderFlags.Update) {
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let tmp: any;
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queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
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}
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});
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const cmptInstance = renderComponent(Cmpt);
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const qList = (cmptInstance.query as QueryList<any>);
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expect(qList.length).toBe(1);
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expect(isElementRef(qList.first)).toBeTruthy();
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expect(qList.first.nativeElement).toBe(elToQuery);
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});
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it('should query using type predicate and read another directive type', () => {
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const Child = createDirective('child');
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const OtherChild = createDirective('otherChild');
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let otherChildInstance;
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/**
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* <div child otherChild></div>
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* class Cmpt {
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* @ViewChildren(Child, {read: OtherChild}) query;
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* }
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*/
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const Cmpt = createComponent(
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'cmpt',
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function(rf: RenderFlags, ctx: any) {
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if (rf & RenderFlags.Create) {
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elementStart(1, 'div', ['child', '', 'otherChild', '']);
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{ otherChildInstance = loadDirective(1); }
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elementEnd();
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}
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},
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[Child, OtherChild], [],
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function(rf: RenderFlags, ctx: any) {
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if (rf & RenderFlags.Create) {
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query(0, Child, false, OtherChild);
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}
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if (rf & RenderFlags.Update) {
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let tmp: any;
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queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
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}
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});
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const cmptInstance = renderComponent(Cmpt);
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const qList = (cmptInstance.query as QueryList<any>);
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expect(qList.length).toBe(1);
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expect(qList.first).toBe(otherChildInstance);
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});
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it('should not add results to query if a requested token cant be read', () => {
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const Child = createDirective('child');
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const OtherChild = createDirective('otherChild');
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/**
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* <div child></div>
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* class Cmpt {
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* @ViewChildren(Child, {read: OtherChild}) query;
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* }
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*/
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const Cmpt = createComponent(
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'cmpt',
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function(rf: RenderFlags, ctx: any) {
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if (rf & RenderFlags.Create) {
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elementStart(1, 'div', ['child', '']);
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elementEnd();
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}
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},
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[Child, OtherChild], [],
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function(rf: RenderFlags, ctx: any) {
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if (rf & RenderFlags.Create) {
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query(0, Child, false, OtherChild);
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}
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if (rf & RenderFlags.Update) {
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let tmp: any;
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queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
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}
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});
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const cmptInstance = renderComponent(Cmpt);
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const qList = (cmptInstance.query as QueryList<any>);
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expect(qList.length).toBe(0);
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});
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});
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describe('local names', () => {
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it('should query for a single element and read ElementRef by default', () => {
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let elToQuery;
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/**
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* <div #foo></div>
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* <div></div>
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* class Cmpt {
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* @ViewChildren('foo') query;
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* }
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*/
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const Cmpt = createComponent(
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'cmpt',
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function(rf: RenderFlags, ctx: any) {
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if (rf & RenderFlags.Create) {
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elToQuery = elementStart(1, 'div', null, ['foo', '']);
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elementEnd();
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elementStart(3, 'div');
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elementEnd();
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}
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},
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[], [],
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function(rf: RenderFlags, ctx: any) {
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if (rf & RenderFlags.Create) {
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query(0, ['foo'], false, QUERY_READ_FROM_NODE);
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}
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if (rf & RenderFlags.Update) {
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let tmp: any;
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queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
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}
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});
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const cmptInstance = renderComponent(Cmpt);
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const qList = (cmptInstance.query as QueryList<any>);
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expect(qList.length).toBe(1);
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expect(qList.first.nativeElement).toEqual(elToQuery);
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});
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it('should query multiple locals on the same element', () => {
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let elToQuery;
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/**
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* <div #foo #bar></div>
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* <div></div>
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* class Cmpt {
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* @ViewChildren('foo') fooQuery;
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* @ViewChildren('bar') barQuery;
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* }
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*/
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const Cmpt = createComponent(
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'cmpt',
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function(rf: RenderFlags, ctx: any) {
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if (rf & RenderFlags.Create) {
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elToQuery = elementStart(2, 'div', null, ['foo', '', 'bar', '']);
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elementEnd();
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elementStart(5, 'div');
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elementEnd();
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}
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},
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[], [],
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function(rf: RenderFlags, ctx: any) {
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if (rf & RenderFlags.Create) {
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query(0, ['foo'], false, QUERY_READ_FROM_NODE);
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query(1, ['bar'], false, QUERY_READ_FROM_NODE);
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}
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if (rf & RenderFlags.Update) {
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let tmp: any;
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queryRefresh(tmp = load<QueryList<any>>(0)) &&
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(ctx.fooQuery = tmp as QueryList<any>);
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queryRefresh(tmp = load<QueryList<any>>(1)) &&
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(ctx.barQuery = tmp as QueryList<any>);
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}
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});
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const cmptInstance = renderComponent(Cmpt);
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const fooList = (cmptInstance.fooQuery as QueryList<any>);
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expect(fooList.length).toBe(1);
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expect(fooList.first.nativeElement).toEqual(elToQuery);
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const barList = (cmptInstance.barQuery as QueryList<any>);
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expect(barList.length).toBe(1);
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expect(barList.first.nativeElement).toEqual(elToQuery);
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});
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it('should query for multiple elements and read ElementRef by default', () => {
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let el1ToQuery;
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let el2ToQuery;
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/**
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* <div #foo></div>
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* <div></div>
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* <div #bar></div>
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* class Cmpt {
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* @ViewChildren('foo,bar') query;
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* }
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*/
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const Cmpt = createComponent(
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'cmpt',
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function(rf: RenderFlags, ctx: any) {
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if (rf & RenderFlags.Create) {
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el1ToQuery = elementStart(1, 'div', null, ['foo', '']);
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elementEnd();
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elementStart(3, 'div');
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elementEnd();
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el2ToQuery = elementStart(4, 'div', null, ['bar', '']);
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elementEnd();
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}
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},
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[], [],
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function(rf: RenderFlags, ctx: any) {
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if (rf & RenderFlags.Create) {
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query(0, ['foo', 'bar'], undefined, QUERY_READ_FROM_NODE);
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}
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if (rf & RenderFlags.Update) {
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let tmp: any;
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queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
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}
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});
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const cmptInstance = renderComponent(Cmpt);
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const qList = (cmptInstance.query as QueryList<any>);
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expect(qList.length).toBe(2);
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expect(qList.first.nativeElement).toEqual(el1ToQuery);
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expect(qList.last.nativeElement).toEqual(el2ToQuery);
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});
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it('should read ElementRef from an element when explicitly asked for', () => {
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let elToQuery;
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/**
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* <div #foo></div>
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* <div></div>
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* class Cmpt {
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* @ViewChildren('foo', {read: ElementRef}) query;
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* }
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*/
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const Cmpt = createComponent(
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'cmpt',
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function(rf: RenderFlags, ctx: any) {
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if (rf & RenderFlags.Create) {
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elToQuery = elementStart(1, 'div', null, ['foo', '']);
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elementEnd();
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element(3, 'div');
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}
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},
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[], [],
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function(rf: RenderFlags, ctx: any) {
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if (rf & RenderFlags.Create) {
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query(0, ['foo'], false, QUERY_READ_ELEMENT_REF);
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}
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if (rf & RenderFlags.Update) {
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let tmp: any;
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queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
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}
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});
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const cmptInstance = renderComponent(Cmpt);
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const qList = (cmptInstance.query as QueryList<any>);
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expect(qList.length).toBe(1);
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expect(isElementRef(qList.first)).toBeTruthy();
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expect(qList.first.nativeElement).toEqual(elToQuery);
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});
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it('should read ViewContainerRef from element nodes when explicitly asked for', () => {
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/**
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* <div #foo></div>
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* class Cmpt {
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* @ViewChildren('foo', {read: ViewContainerRef}) query;
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* }
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*/
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const Cmpt = createComponent(
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'cmpt',
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function(rf: RenderFlags, ctx: any) {
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if (rf & RenderFlags.Create) {
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element(1, 'div', null, ['foo', '']);
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}
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},
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[], [],
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function(rf: RenderFlags, ctx: any) {
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if (rf & RenderFlags.Create) {
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query(0, ['foo'], false, QUERY_READ_CONTAINER_REF);
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}
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if (rf & RenderFlags.Update) {
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let tmp: any;
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queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
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}
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});
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const cmptInstance = renderComponent(Cmpt);
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const qList = (cmptInstance.query as QueryList<any>);
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expect(qList.length).toBe(1);
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expect(isViewContainerRef(qList.first)).toBeTruthy();
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});
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it('should read ViewContainerRef from container nodes when explicitly asked for', () => {
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/**
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* <ng-template #foo></ng-template>
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* class Cmpt {
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* @ViewChildren('foo', {read: ViewContainerRef}) query;
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* }
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*/
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const Cmpt = createComponent(
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'cmpt',
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function(rf: RenderFlags, ctx: any) {
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if (rf & RenderFlags.Create) {
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container(1, undefined, undefined, undefined, ['foo', '']);
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}
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},
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[], [],
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function(rf: RenderFlags, ctx: any) {
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if (rf & RenderFlags.Create) {
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query(0, ['foo'], false, QUERY_READ_CONTAINER_REF);
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}
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if (rf & RenderFlags.Update) {
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let tmp: any;
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queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
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}
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});
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const cmptInstance = renderComponent(Cmpt);
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const qList = (cmptInstance.query as QueryList<any>);
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expect(qList.length).toBe(1);
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expect(isViewContainerRef(qList.first)).toBeTruthy();
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});
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it('should read ElementRef with a native element pointing to comment DOM node from containers',
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() => {
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/**
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* <ng-template #foo></ng-template>
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* class Cmpt {
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* @ViewChildren('foo', {read: ElementRef}) query;
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* }
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*/
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const Cmpt = createComponent(
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'cmpt',
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function(rf: RenderFlags, ctx: any) {
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if (rf & RenderFlags.Create) {
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container(1, undefined, undefined, undefined, ['foo', '']);
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}
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},
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[], [],
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function(rf: RenderFlags, ctx: any) {
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if (rf & RenderFlags.Create) {
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query(0, ['foo'], false, QUERY_READ_ELEMENT_REF);
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}
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if (rf & RenderFlags.Update) {
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let tmp: any;
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queryRefresh(tmp = load<QueryList<any>>(0)) &&
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(ctx.query = tmp as QueryList<any>);
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}
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});
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const cmptInstance = renderComponent(Cmpt);
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const qList = (cmptInstance.query as QueryList<any>);
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expect(qList.length).toBe(1);
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expect(isElementRef(qList.first)).toBeTruthy();
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expect(qList.first.nativeElement.nodeType).toBe(8); // Node.COMMENT_NODE = 8
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});
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it('should read TemplateRef from container nodes by default', () => {
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// http://plnkr.co/edit/BVpORly8wped9I3xUYsX?p=preview
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/**
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* <ng-template #foo></ng-template>
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* class Cmpt {
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* @ViewChildren('foo') query;
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* }
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*/
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const Cmpt = createComponent(
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'cmpt',
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function(rf: RenderFlags, ctx: any) {
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if (rf & RenderFlags.Create) {
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container(1, undefined, undefined, undefined, ['foo', '']);
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}
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},
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[], [],
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function(rf: RenderFlags, ctx: any) {
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if (rf & RenderFlags.Create) {
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query(0, ['foo'], undefined, QUERY_READ_FROM_NODE);
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}
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if (rf & RenderFlags.Update) {
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let tmp: any;
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queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
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}
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});
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const cmptInstance = renderComponent(Cmpt);
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const qList = (cmptInstance.query as QueryList<any>);
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expect(qList.length).toBe(1);
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expect(isTemplateRef(qList.first)).toBeTruthy();
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});
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it('should read TemplateRef from container nodes when explicitly asked for', () => {
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/**
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* <ng-template #foo></ng-template>
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* class Cmpt {
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* @ViewChildren('foo', {read: TemplateRef}) query;
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* }
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*/
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const Cmpt = createComponent(
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'cmpt',
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function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
container(1, undefined, undefined, undefined, ['foo', '']);
|
|
}
|
|
},
|
|
[], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], false, QUERY_READ_TEMPLATE_REF);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
let tmp: any;
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
|
|
}
|
|
});
|
|
|
|
const cmptInstance = renderComponent(Cmpt);
|
|
const qList = (cmptInstance.query as QueryList<any>);
|
|
expect(qList.length).toBe(1);
|
|
expect(isTemplateRef(qList.first)).toBeTruthy();
|
|
});
|
|
|
|
it('should read component instance if element queried for is a component host', () => {
|
|
const Child = createComponent('child', function(rf: RenderFlags, ctx: any) {});
|
|
|
|
let childInstance;
|
|
/**
|
|
* <child #foo></child>
|
|
* class Cmpt {
|
|
* @ViewChildren('foo') query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent(
|
|
'cmpt',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
element(1, 'child', null, ['foo', '']);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
childInstance = loadDirective(0);
|
|
}
|
|
},
|
|
[Child], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], true, QUERY_READ_FROM_NODE);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
let tmp: any;
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
|
|
}
|
|
});
|
|
|
|
const cmptInstance = renderComponent(Cmpt);
|
|
const qList = (cmptInstance.query as QueryList<any>);
|
|
expect(qList.length).toBe(1);
|
|
expect(qList.first).toBe(childInstance);
|
|
});
|
|
|
|
it('should read component instance with explicit exportAs', () => {
|
|
let childInstance: Child;
|
|
|
|
class Child {
|
|
static ngComponentDef = defineComponent({
|
|
type: Child,
|
|
selectors: [['child']],
|
|
factory: () => childInstance = new Child(),
|
|
template: (rf: RenderFlags, ctx: Child) => {},
|
|
exportAs: 'child'
|
|
});
|
|
}
|
|
|
|
/**
|
|
* <child #foo="child"></child>
|
|
* class Cmpt {
|
|
* @ViewChildren('foo') query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent(
|
|
'cmpt',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
element(1, 'child', null, ['foo', 'child']);
|
|
}
|
|
},
|
|
[Child], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], true, QUERY_READ_FROM_NODE);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
let tmp: any;
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
|
|
}
|
|
});
|
|
|
|
const cmptInstance = renderComponent(Cmpt);
|
|
const qList = (cmptInstance.query as QueryList<any>);
|
|
expect(qList.length).toBe(1);
|
|
expect(qList.first).toBe(childInstance !);
|
|
});
|
|
|
|
it('should read directive instance if element queried for has an exported directive with a matching name',
|
|
() => {
|
|
const Child = createDirective('child', {exportAs: 'child'});
|
|
|
|
let childInstance;
|
|
/**
|
|
* <div #foo="child" child></div>
|
|
* class Cmpt {
|
|
* @ViewChildren('foo') query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent(
|
|
'cmpt',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
element(1, 'div', ['child', ''], ['foo', 'child']);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
childInstance = loadDirective(0);
|
|
}
|
|
},
|
|
[Child], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], true, QUERY_READ_FROM_NODE);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
let tmp: any;
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) &&
|
|
(ctx.query = tmp as QueryList<any>);
|
|
}
|
|
});
|
|
|
|
const cmptInstance = renderComponent(Cmpt);
|
|
const qList = (cmptInstance.query as QueryList<any>);
|
|
expect(qList.length).toBe(1);
|
|
expect(qList.first).toBe(childInstance);
|
|
});
|
|
|
|
it('should read all matching directive instances from a given element', () => {
|
|
const Child1 = createDirective('child1', {exportAs: 'child1'});
|
|
const Child2 = createDirective('child2', {exportAs: 'child2'});
|
|
|
|
let child1Instance, child2Instance;
|
|
/**
|
|
* <div #foo="child1" child1 #bar="child2" child2></div>
|
|
* class Cmpt {
|
|
* @ViewChildren('foo, bar') query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent(
|
|
'cmpt',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
element(1, 'div', ['child1', '', 'child2', ''], ['foo', 'child1', 'bar', 'child2']);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
child1Instance = loadDirective(0);
|
|
child2Instance = loadDirective(1);
|
|
}
|
|
},
|
|
[Child1, Child2], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo', 'bar'], true, QUERY_READ_FROM_NODE);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
let tmp: any;
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
|
|
}
|
|
});
|
|
|
|
const cmptInstance = renderComponent(Cmpt);
|
|
const qList = (cmptInstance.query as QueryList<any>);
|
|
expect(qList.length).toBe(2);
|
|
expect(qList.first).toBe(child1Instance);
|
|
expect(qList.last).toBe(child2Instance);
|
|
});
|
|
|
|
it('should read multiple locals exporting the same directive from a given element', () => {
|
|
const Child = createDirective('child', {exportAs: 'child'});
|
|
let childInstance;
|
|
|
|
/**
|
|
* <div child #foo="child" #bar="child"></div>
|
|
* class Cmpt {
|
|
* @ViewChildren('foo') fooQuery;
|
|
* @ViewChildren('bar') barQuery;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent(
|
|
'cmpt',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
element(2, 'div', ['child', ''], ['foo', 'child', 'bar', 'child']);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
childInstance = loadDirective(0);
|
|
}
|
|
},
|
|
[Child], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], true, QUERY_READ_FROM_NODE);
|
|
query(1, ['bar'], true, QUERY_READ_FROM_NODE);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
let tmp: any;
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) &&
|
|
(ctx.fooQuery = tmp as QueryList<any>);
|
|
queryRefresh(tmp = load<QueryList<any>>(1)) &&
|
|
(ctx.barQuery = tmp as QueryList<any>);
|
|
}
|
|
});
|
|
|
|
const cmptInstance = renderComponent(Cmpt);
|
|
|
|
const fooList = cmptInstance.fooQuery as QueryList<any>;
|
|
expect(fooList.length).toBe(1);
|
|
expect(fooList.first).toBe(childInstance);
|
|
|
|
const barList = cmptInstance.barQuery as QueryList<any>;
|
|
expect(barList.length).toBe(1);
|
|
expect(barList.first).toBe(childInstance);
|
|
});
|
|
|
|
it('should match on exported directive name and read a requested token', () => {
|
|
const Child = createDirective('child', {exportAs: 'child'});
|
|
|
|
let div;
|
|
/**
|
|
* <div #foo="child" child></div>
|
|
* class Cmpt {
|
|
* @ViewChildren('foo', {read: ElementRef}) query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent(
|
|
'cmpt',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
div = elementStart(1, 'div', ['child', ''], ['foo', 'child']);
|
|
elementEnd();
|
|
}
|
|
},
|
|
[Child], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], undefined, QUERY_READ_ELEMENT_REF);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
let tmp: any;
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
|
|
}
|
|
});
|
|
|
|
const cmptInstance = renderComponent(Cmpt);
|
|
const qList = (cmptInstance.query as QueryList<any>);
|
|
expect(qList.length).toBe(1);
|
|
expect(qList.first.nativeElement).toBe(div);
|
|
});
|
|
|
|
it('should support reading a mix of ElementRef and directive instances', () => {
|
|
const Child = createDirective('child', {exportAs: 'child'});
|
|
|
|
let childInstance, div;
|
|
/**
|
|
* <div #foo #bar="child" child></div>
|
|
* class Cmpt {
|
|
* @ViewChildren('foo, bar') query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent(
|
|
'cmpt',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
div = elementStart(1, 'div', ['child', ''], ['foo', '', 'bar', 'child']);
|
|
elementEnd();
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
childInstance = loadDirective(0);
|
|
}
|
|
},
|
|
[Child], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo', 'bar'], undefined, QUERY_READ_FROM_NODE);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
let tmp: any;
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
|
|
}
|
|
});
|
|
|
|
const cmptInstance = renderComponent(Cmpt);
|
|
const qList = (cmptInstance.query as QueryList<any>);
|
|
expect(qList.length).toBe(2);
|
|
expect(qList.first.nativeElement).toBe(div);
|
|
expect(qList.last).toBe(childInstance);
|
|
});
|
|
|
|
it('should not add results to query if a requested token cant be read', () => {
|
|
const Child = createDirective('child');
|
|
|
|
/**
|
|
* <div #foo></div>
|
|
* class Cmpt {
|
|
* @ViewChildren('foo', {read: Child}) query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent(
|
|
'cmpt',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
element(1, 'div', ['foo', '']);
|
|
}
|
|
},
|
|
[Child], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], false, Child);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
let tmp: any;
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
|
|
}
|
|
});
|
|
|
|
const cmptInstance = renderComponent(Cmpt);
|
|
const qList = (cmptInstance.query as QueryList<any>);
|
|
expect(qList.length).toBe(0);
|
|
});
|
|
|
|
});
|
|
});
|
|
|
|
describe('view boundaries', () => {
|
|
|
|
describe('ViewContainerRef', () => {
|
|
|
|
let directiveInstances: ViewContainerManipulatorDirective[] = [];
|
|
|
|
class ViewContainerManipulatorDirective {
|
|
static ngDirectiveDef = defineDirective({
|
|
type: ViewContainerManipulatorDirective,
|
|
selectors: [['', 'vc', '']],
|
|
factory: () => {
|
|
const directiveInstance =
|
|
new ViewContainerManipulatorDirective(injectViewContainerRef());
|
|
directiveInstances.push(directiveInstance);
|
|
return directiveInstance;
|
|
}
|
|
});
|
|
|
|
constructor(private _vcRef: ViewContainerRef) {}
|
|
|
|
insertTpl(tpl: TemplateRef<{}>, ctx: {}, idx?: number) {
|
|
this._vcRef.createEmbeddedView(tpl, ctx, idx);
|
|
}
|
|
|
|
remove(index?: number) { this._vcRef.remove(index); }
|
|
}
|
|
|
|
beforeEach(() => { directiveInstances = []; });
|
|
|
|
it('should report results in views inserted / removed by ngIf', () => {
|
|
|
|
/**
|
|
* <ng-template [ngIf]="value">
|
|
* <div #foo></div>
|
|
* </ng-template>
|
|
* class Cmpt {
|
|
* @ViewChildren('foo') query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent(
|
|
'cmpt',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
container(1, (rf1: RenderFlags, ctx1: any) => {
|
|
if (rf1 & RenderFlags.Create) {
|
|
elementStart(0, 'div', null, ['foo', '']);
|
|
elementEnd();
|
|
}
|
|
}, null, ['ngIf', '']);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
elementProperty(1, 'ngIf', bind(ctx.value));
|
|
}
|
|
},
|
|
[NgIf], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], true, QUERY_READ_FROM_NODE);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
let tmp: any;
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
|
|
}
|
|
});
|
|
|
|
const fixture = new ComponentFixture(Cmpt);
|
|
const qList = fixture.component.query;
|
|
expect(qList.length).toBe(0);
|
|
|
|
fixture.component.value = true;
|
|
fixture.update();
|
|
expect(qList.length).toBe(1);
|
|
|
|
fixture.component.value = false;
|
|
fixture.update();
|
|
expect(qList.length).toBe(0);
|
|
});
|
|
|
|
it('should report results in views inserted / removed by ngFor', () => {
|
|
|
|
/**
|
|
* <ng-template ngFor let-item [ngForOf]="value">
|
|
* <div #foo [id]="item"></div>
|
|
* </ng-template>
|
|
* class Cmpt {
|
|
* @ViewChildren('foo') query;
|
|
* }
|
|
*/
|
|
class Cmpt {
|
|
// TODO(issue/24571): remove '!'.
|
|
value !: string[];
|
|
query: any;
|
|
static ngComponentDef = defineComponent({
|
|
type: Cmpt,
|
|
factory: () => new Cmpt(),
|
|
selectors: [['my-app']],
|
|
template: function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
container(1, (rf1: RenderFlags, row: NgForOfContext<string>) => {
|
|
if (rf1 & RenderFlags.Create) {
|
|
elementStart(0, 'div', null, ['foo', '']);
|
|
elementEnd();
|
|
}
|
|
if (rf1 & RenderFlags.Update) {
|
|
elementProperty(0, 'id', bind(row.$implicit));
|
|
}
|
|
}, null, ['ngForOf', '']);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
elementProperty(1, 'ngForOf', bind(ctx.value));
|
|
}
|
|
},
|
|
viewQuery: function(rf: RenderFlags, ctx: Cmpt) {
|
|
let tmp: any;
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], true, QUERY_READ_FROM_NODE);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
|
|
}
|
|
},
|
|
directives: () => [NgForOf]
|
|
});
|
|
}
|
|
|
|
const fixture = new ComponentFixture(Cmpt);
|
|
const qList = fixture.component.query;
|
|
expect(qList.length).toBe(0);
|
|
|
|
fixture.component.value = ['a', 'b', 'c'];
|
|
fixture.update();
|
|
expect(qList.length).toBe(3);
|
|
|
|
fixture.component.value.splice(1, 1); // remove "b"
|
|
fixture.update();
|
|
expect(qList.length).toBe(2);
|
|
|
|
// make sure that a proper element was removed from query results
|
|
expect(qList.first.nativeElement.id).toBe('a');
|
|
expect(qList.last.nativeElement.id).toBe('c');
|
|
|
|
});
|
|
|
|
// https://stackblitz.com/edit/angular-rrmmuf?file=src/app/app.component.ts
|
|
it('should report results when different instances of TemplateRef are inserted into one ViewContainerRefs',
|
|
() => {
|
|
let tpl1: TemplateRef<{}>;
|
|
let tpl2: TemplateRef<{}>;
|
|
|
|
|
|
/**
|
|
* <ng-template #tpl1 let-idx="idx">
|
|
* <div #foo [id]="'foo1_'+idx"></div>
|
|
* </ng-template>
|
|
*
|
|
* <div #foo id="middle"></div>
|
|
*
|
|
* <ng-template #tpl2 let-idx="idx">
|
|
* <div #foo [id]="'foo2_'+idx"></div>
|
|
* </ng-template>
|
|
*
|
|
* <ng-template viewInserter #vi="vi"></ng-template>
|
|
*/
|
|
const Cmpt = createComponent(
|
|
'cmpt',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
container(1, (rf: RenderFlags, ctx: {idx: number}) => {
|
|
if (rf & RenderFlags.Create) {
|
|
elementStart(0, 'div', null, ['foo', '']);
|
|
elementEnd();
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
elementProperty(0, 'id', bind('foo1_' + ctx.idx));
|
|
}
|
|
}, null, []);
|
|
|
|
elementStart(2, 'div', ['id', 'middle'], ['foo', '']);
|
|
elementEnd();
|
|
|
|
container(4, (rf: RenderFlags, ctx: {idx: number}) => {
|
|
if (rf & RenderFlags.Create) {
|
|
elementStart(0, 'div', null, ['foo', '']);
|
|
elementEnd();
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
elementProperty(0, 'id', bind('foo2_' + ctx.idx));
|
|
}
|
|
}, null, []);
|
|
|
|
container(5, undefined, null, [AttributeMarker.SelectOnly, 'vc']);
|
|
}
|
|
|
|
if (rf & RenderFlags.Update) {
|
|
tpl1 = getOrCreateTemplateRef(getOrCreateNodeInjectorForNode(load(1)));
|
|
tpl2 = getOrCreateTemplateRef(getOrCreateNodeInjectorForNode(load(4)));
|
|
}
|
|
|
|
},
|
|
[ViewContainerManipulatorDirective], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], true, QUERY_READ_FROM_NODE);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
let tmp: any;
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) &&
|
|
(ctx.query = tmp as QueryList<any>);
|
|
}
|
|
});
|
|
|
|
const fixture = new ComponentFixture(Cmpt);
|
|
const qList = fixture.component.query;
|
|
|
|
expect(qList.length).toBe(1);
|
|
expect(qList.first.nativeElement.getAttribute('id')).toBe('middle');
|
|
|
|
directiveInstances[0].insertTpl(tpl1 !, {idx: 0}, 0);
|
|
directiveInstances[0].insertTpl(tpl2 !, {idx: 1}, 1);
|
|
fixture.update();
|
|
expect(qList.length).toBe(3);
|
|
let qListArr = qList.toArray();
|
|
expect(qListArr[0].nativeElement.getAttribute('id')).toBe('foo1_0');
|
|
expect(qListArr[1].nativeElement.getAttribute('id')).toBe('middle');
|
|
expect(qListArr[2].nativeElement.getAttribute('id')).toBe('foo2_1');
|
|
|
|
directiveInstances[0].insertTpl(tpl1 !, {idx: 1}, 1);
|
|
fixture.update();
|
|
expect(qList.length).toBe(4);
|
|
qListArr = qList.toArray();
|
|
expect(qListArr[0].nativeElement.getAttribute('id')).toBe('foo1_0');
|
|
expect(qListArr[1].nativeElement.getAttribute('id')).toBe('foo1_1');
|
|
expect(qListArr[2].nativeElement.getAttribute('id')).toBe('middle');
|
|
expect(qListArr[3].nativeElement.getAttribute('id')).toBe('foo2_1');
|
|
|
|
directiveInstances[0].remove(1);
|
|
fixture.update();
|
|
expect(qList.length).toBe(3);
|
|
qListArr = qList.toArray();
|
|
expect(qListArr[0].nativeElement.getAttribute('id')).toBe('foo1_0');
|
|
expect(qListArr[1].nativeElement.getAttribute('id')).toBe('middle');
|
|
expect(qListArr[2].nativeElement.getAttribute('id')).toBe('foo2_1');
|
|
|
|
directiveInstances[0].remove(1);
|
|
fixture.update();
|
|
expect(qList.length).toBe(2);
|
|
qListArr = qList.toArray();
|
|
expect(qListArr[0].nativeElement.getAttribute('id')).toBe('foo1_0');
|
|
expect(qListArr[1].nativeElement.getAttribute('id')).toBe('middle');
|
|
});
|
|
|
|
// https://stackblitz.com/edit/angular-7vvo9j?file=src%2Fapp%2Fapp.component.ts
|
|
it('should report results when the same TemplateRef is inserted into different ViewContainerRefs',
|
|
() => {
|
|
let tpl: TemplateRef<{}>;
|
|
|
|
/**
|
|
* <ng-template #tpl let-idx="idx" let-container_idx="container_idx">
|
|
* <div #foo [id]="'foo_'+container_idx+'_'+idx"></div>
|
|
* </ng-template>
|
|
*
|
|
* <ng-template viewInserter #vi1="vi"></ng-template>
|
|
* <ng-template viewInserter #vi2="vi"></ng-template>
|
|
*/
|
|
class Cmpt {
|
|
query: any;
|
|
static ngComponentDef = defineComponent({
|
|
type: Cmpt,
|
|
factory: () => new Cmpt(),
|
|
selectors: [['my-app']],
|
|
template: function(rf: RenderFlags, ctx: any) {
|
|
let tmp: any;
|
|
if (rf & RenderFlags.Create) {
|
|
container(1, (rf: RenderFlags, ctx: {idx: number, container_idx: number}) => {
|
|
if (rf & RenderFlags.Create) {
|
|
elementStart(0, 'div', null, ['foo', '']);
|
|
elementEnd();
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
elementProperty(0, 'id', bind('foo_' + ctx.container_idx + '_' + ctx.idx));
|
|
}
|
|
}, null, []);
|
|
|
|
container(2, undefined, null, [AttributeMarker.SelectOnly, 'vc']);
|
|
container(3, undefined, null, [AttributeMarker.SelectOnly, 'vc']);
|
|
}
|
|
|
|
if (rf & RenderFlags.Update) {
|
|
tpl = getOrCreateTemplateRef(getOrCreateNodeInjectorForNode(load(1)));
|
|
}
|
|
|
|
},
|
|
viewQuery: (rf: RenderFlags, cmpt: Cmpt) => {
|
|
let tmp: any;
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], true, QUERY_READ_FROM_NODE);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) &&
|
|
(cmpt.query = tmp as QueryList<any>);
|
|
}
|
|
},
|
|
directives: () => [ViewContainerManipulatorDirective],
|
|
});
|
|
}
|
|
const fixture = new ComponentFixture(Cmpt);
|
|
const qList = fixture.component.query;
|
|
|
|
expect(qList.length).toBe(0);
|
|
|
|
directiveInstances[0].insertTpl(tpl !, {idx: 0, container_idx: 0}, 0);
|
|
directiveInstances[1].insertTpl(tpl !, {idx: 0, container_idx: 1}, 0);
|
|
fixture.update();
|
|
expect(qList.length).toBe(2);
|
|
let qListArr = qList.toArray();
|
|
expect(qListArr[0].nativeElement.getAttribute('id')).toBe('foo_1_0');
|
|
expect(qListArr[1].nativeElement.getAttribute('id')).toBe('foo_0_0');
|
|
|
|
directiveInstances[0].remove();
|
|
fixture.update();
|
|
expect(qList.length).toBe(1);
|
|
qListArr = qList.toArray();
|
|
expect(qListArr[0].nativeElement.getAttribute('id')).toBe('foo_1_0');
|
|
|
|
directiveInstances[1].remove();
|
|
fixture.update();
|
|
expect(qList.length).toBe(0);
|
|
});
|
|
|
|
// https://stackblitz.com/edit/angular-wpd6gv?file=src%2Fapp%2Fapp.component.ts
|
|
it('should report results from views inserted in a lifecycle hook', () => {
|
|
|
|
class MyApp {
|
|
show = false;
|
|
query: any;
|
|
static ngComponentDef = defineComponent({
|
|
type: MyApp,
|
|
factory: () => new MyApp(),
|
|
selectors: [['my-app']],
|
|
/**
|
|
* <ng-template #tpl><span #foo id="from_tpl">from tpl</span></ng-template>
|
|
* <ng-template [ngTemplateOutlet]="show ? tpl : null"></ng-template>
|
|
*/
|
|
template: (rf: RenderFlags, myApp: MyApp) => {
|
|
if (rf & RenderFlags.Create) {
|
|
container(1, (rf1: RenderFlags) => {
|
|
if (rf1 & RenderFlags.Create) {
|
|
element(0, 'span', ['id', 'from_tpl'], ['foo', '']);
|
|
}
|
|
}, undefined, undefined, ['tpl', '']);
|
|
container(3, undefined, null, [AttributeMarker.SelectOnly, 'ngTemplateOutlet']);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
const tplRef = getOrCreateTemplateRef(getOrCreateNodeInjectorForNode(load(1)));
|
|
elementProperty(3, 'ngTemplateOutlet', bind(myApp.show ? tplRef : null));
|
|
}
|
|
},
|
|
directives: () => [NgTemplateOutlet],
|
|
viewQuery: (rf: RenderFlags, myApp: MyApp) => {
|
|
let tmp: any;
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], true, QUERY_READ_FROM_NODE);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) &&
|
|
(myApp.query = tmp as QueryList<any>);
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
const fixture = new ComponentFixture(MyApp);
|
|
const qList = fixture.component.query;
|
|
|
|
expect(qList.length).toBe(0);
|
|
|
|
fixture.component.show = true;
|
|
fixture.update();
|
|
expect(qList.length).toBe(1);
|
|
expect(qList.first.nativeElement.id).toBe('from_tpl');
|
|
|
|
fixture.component.show = false;
|
|
fixture.update();
|
|
expect(qList.length).toBe(0);
|
|
});
|
|
|
|
});
|
|
|
|
describe('JS blocks', () => {
|
|
|
|
it('should report results in embedded views', () => {
|
|
let firstEl;
|
|
/**
|
|
* % if (exp) {
|
|
* <div #foo></div>
|
|
* % }
|
|
* class Cmpt {
|
|
* @ViewChildren('foo') query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent(
|
|
'cmpt',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
container(1);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
containerRefreshStart(1);
|
|
{
|
|
if (ctx.exp) {
|
|
let rf1 = embeddedViewStart(1);
|
|
{
|
|
if (rf1 & RenderFlags.Create) {
|
|
firstEl = elementStart(0, 'div', null, ['foo', '']);
|
|
elementEnd();
|
|
}
|
|
}
|
|
embeddedViewEnd();
|
|
}
|
|
}
|
|
containerRefreshEnd();
|
|
}
|
|
},
|
|
[], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], true, QUERY_READ_FROM_NODE);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
let tmp: any;
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
|
|
}
|
|
});
|
|
|
|
const cmptInstance = renderComponent(Cmpt);
|
|
const qList = (cmptInstance.query as any);
|
|
expect(qList.length).toBe(0);
|
|
|
|
cmptInstance.exp = true;
|
|
detectChanges(cmptInstance);
|
|
expect(qList.length).toBe(1);
|
|
expect(qList.first.nativeElement).toBe(firstEl);
|
|
|
|
cmptInstance.exp = false;
|
|
detectChanges(cmptInstance);
|
|
expect(qList.length).toBe(0);
|
|
});
|
|
|
|
it('should add results from embedded views in the correct order - views and elements mix',
|
|
() => {
|
|
let firstEl, lastEl, viewEl;
|
|
/**
|
|
* <span #foo></span>
|
|
* % if (exp) {
|
|
* <div #foo></div>
|
|
* % }
|
|
* <span #foo></span>
|
|
* class Cmpt {
|
|
* @ViewChildren('foo') query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent(
|
|
'cmpt',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
firstEl = elementStart(1, 'span', null, ['foo', '']);
|
|
elementEnd();
|
|
container(3);
|
|
lastEl = elementStart(4, 'span', null, ['foo', '']);
|
|
elementEnd();
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
containerRefreshStart(3);
|
|
{
|
|
if (ctx.exp) {
|
|
let rf1 = embeddedViewStart(1);
|
|
{
|
|
if (rf1 & RenderFlags.Create) {
|
|
viewEl = elementStart(0, 'div', null, ['foo', '']);
|
|
elementEnd();
|
|
}
|
|
}
|
|
embeddedViewEnd();
|
|
}
|
|
}
|
|
containerRefreshEnd();
|
|
}
|
|
},
|
|
[], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], true, QUERY_READ_FROM_NODE);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
let tmp: any;
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) &&
|
|
(ctx.query = tmp as QueryList<any>);
|
|
}
|
|
});
|
|
|
|
const cmptInstance = renderComponent(Cmpt);
|
|
const qList = (cmptInstance.query as any);
|
|
expect(qList.length).toBe(2);
|
|
expect(qList.first.nativeElement).toBe(firstEl);
|
|
expect(qList.last.nativeElement).toBe(lastEl);
|
|
|
|
cmptInstance.exp = true;
|
|
detectChanges(cmptInstance);
|
|
expect(qList.length).toBe(3);
|
|
expect(qList.toArray()[0].nativeElement).toBe(firstEl);
|
|
expect(qList.toArray()[1].nativeElement).toBe(viewEl);
|
|
expect(qList.toArray()[2].nativeElement).toBe(lastEl);
|
|
|
|
cmptInstance.exp = false;
|
|
detectChanges(cmptInstance);
|
|
expect(qList.length).toBe(2);
|
|
expect(qList.first.nativeElement).toBe(firstEl);
|
|
expect(qList.last.nativeElement).toBe(lastEl);
|
|
});
|
|
|
|
it('should add results from embedded views in the correct order - views side by side', () => {
|
|
let firstEl, lastEl;
|
|
/**
|
|
* % if (exp1) {
|
|
* <div #foo></div>
|
|
* % } if (exp2) {
|
|
* <span #foo></span>
|
|
* % }
|
|
* class Cmpt {
|
|
* @ViewChildren('foo') query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent(
|
|
'cmpt',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
container(1);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
containerRefreshStart(1);
|
|
{
|
|
if (ctx.exp1) {
|
|
let rf0 = embeddedViewStart(0);
|
|
{
|
|
if (rf0 & RenderFlags.Create) {
|
|
firstEl = elementStart(0, 'div', null, ['foo', '']);
|
|
elementEnd();
|
|
}
|
|
}
|
|
embeddedViewEnd();
|
|
}
|
|
if (ctx.exp2) {
|
|
let rf1 = embeddedViewStart(1);
|
|
{
|
|
if (rf1 & RenderFlags.Create) {
|
|
lastEl = elementStart(0, 'span', null, ['foo', '']);
|
|
elementEnd();
|
|
}
|
|
}
|
|
embeddedViewEnd();
|
|
}
|
|
}
|
|
containerRefreshEnd();
|
|
}
|
|
},
|
|
[], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], true, QUERY_READ_FROM_NODE);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
let tmp: any;
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
|
|
}
|
|
});
|
|
|
|
const cmptInstance = renderComponent(Cmpt);
|
|
const qList = (cmptInstance.query as any);
|
|
expect(qList.length).toBe(0);
|
|
|
|
cmptInstance.exp2 = true;
|
|
detectChanges(cmptInstance);
|
|
expect(qList.length).toBe(1);
|
|
expect(qList.last.nativeElement).toBe(lastEl);
|
|
|
|
cmptInstance.exp1 = true;
|
|
detectChanges(cmptInstance);
|
|
expect(qList.length).toBe(2);
|
|
expect(qList.first.nativeElement).toBe(firstEl);
|
|
expect(qList.last.nativeElement).toBe(lastEl);
|
|
});
|
|
|
|
it('should add results from embedded views in the correct order - nested views', () => {
|
|
let firstEl, lastEl;
|
|
/**
|
|
* % if (exp1) {
|
|
* <div #foo></div>
|
|
* % if (exp2) {
|
|
* <span #foo></span>
|
|
* }
|
|
* % }
|
|
* class Cmpt {
|
|
* @ViewChildren('foo') query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent(
|
|
'cmpt',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
container(1);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
containerRefreshStart(1);
|
|
{
|
|
if (ctx.exp1) {
|
|
let rf0 = embeddedViewStart(0);
|
|
{
|
|
if (rf0 & RenderFlags.Create) {
|
|
firstEl = elementStart(0, 'div', null, ['foo', '']);
|
|
elementEnd();
|
|
container(2);
|
|
}
|
|
if (rf0 & RenderFlags.Update) {
|
|
containerRefreshStart(2);
|
|
{
|
|
if (ctx.exp2) {
|
|
let rf2 = embeddedViewStart(0);
|
|
{
|
|
if (rf2) {
|
|
lastEl = elementStart(0, 'span', null, ['foo', '']);
|
|
elementEnd();
|
|
}
|
|
}
|
|
embeddedViewEnd();
|
|
}
|
|
}
|
|
containerRefreshEnd();
|
|
}
|
|
}
|
|
embeddedViewEnd();
|
|
}
|
|
}
|
|
containerRefreshEnd();
|
|
}
|
|
},
|
|
[], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], true, QUERY_READ_FROM_NODE);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
let tmp: any;
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
|
|
}
|
|
});
|
|
|
|
const cmptInstance = renderComponent(Cmpt);
|
|
const qList = (cmptInstance.query as any);
|
|
expect(qList.length).toBe(0);
|
|
|
|
cmptInstance.exp1 = true;
|
|
detectChanges(cmptInstance);
|
|
expect(qList.length).toBe(1);
|
|
expect(qList.first.nativeElement).toBe(firstEl);
|
|
|
|
cmptInstance.exp2 = true;
|
|
detectChanges(cmptInstance);
|
|
expect(qList.length).toBe(2);
|
|
expect(qList.first.nativeElement).toBe(firstEl);
|
|
expect(qList.last.nativeElement).toBe(lastEl);
|
|
});
|
|
|
|
/**
|
|
* What is tested here can't be achieved in the Renderer2 as all view queries are deep by
|
|
* default and can't be marked as shallow by a user.
|
|
*/
|
|
it('should support combination of deep and shallow queries', () => {
|
|
/**
|
|
* % if (exp) { ">
|
|
* <div #foo></div>
|
|
* % }
|
|
* <span #foo></span>
|
|
* class Cmpt {
|
|
* @ViewChildren('foo') deep;
|
|
* @ViewChildren('foo') shallow;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent(
|
|
'cmpt',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
container(2);
|
|
elementStart(3, 'span', null, ['foo', '']);
|
|
elementEnd();
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
containerRefreshStart(2);
|
|
{
|
|
if (ctx.exp) {
|
|
let rf0 = embeddedViewStart(0);
|
|
{
|
|
if (rf0 & RenderFlags.Create) {
|
|
elementStart(0, 'div', null, ['foo', '']);
|
|
elementEnd();
|
|
}
|
|
}
|
|
embeddedViewEnd();
|
|
}
|
|
}
|
|
containerRefreshEnd();
|
|
}
|
|
},
|
|
[], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], true, QUERY_READ_FROM_NODE);
|
|
query(1, ['foo'], false, QUERY_READ_FROM_NODE);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
let tmp: any;
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.deep = tmp as QueryList<any>);
|
|
queryRefresh(tmp = load<QueryList<any>>(1)) &&
|
|
(ctx.shallow = tmp as QueryList<any>);
|
|
}
|
|
});
|
|
|
|
const cmptInstance = renderComponent(Cmpt);
|
|
const deep = (cmptInstance.deep as any);
|
|
const shallow = (cmptInstance.shallow as any);
|
|
expect(deep.length).toBe(1);
|
|
expect(shallow.length).toBe(1);
|
|
|
|
|
|
cmptInstance.exp = true;
|
|
detectChanges(cmptInstance);
|
|
expect(deep.length).toBe(2);
|
|
expect(shallow.length).toBe(1);
|
|
|
|
cmptInstance.exp = false;
|
|
detectChanges(cmptInstance);
|
|
expect(deep.length).toBe(1);
|
|
expect(shallow.length).toBe(1);
|
|
});
|
|
|
|
});
|
|
|
|
});
|
|
|
|
describe('observable interface', () => {
|
|
|
|
it('should allow observing changes to query list', () => {
|
|
const queryList = new QueryList();
|
|
let changes = 0;
|
|
|
|
queryList.changes.subscribe({
|
|
next: (arg) => {
|
|
changes += 1;
|
|
expect(arg).toBe(queryList);
|
|
}
|
|
});
|
|
|
|
// initial refresh, the query should be dirty
|
|
queryRefresh(queryList);
|
|
expect(changes).toBe(1);
|
|
|
|
|
|
// refresh without setting dirty - no emit
|
|
queryRefresh(queryList);
|
|
expect(changes).toBe(1);
|
|
|
|
// refresh with setting dirty - emit
|
|
queryList.setDirty();
|
|
queryRefresh(queryList);
|
|
expect(changes).toBe(2);
|
|
});
|
|
|
|
});
|
|
|
|
describe('queryList', () => {
|
|
it('should be destroyed when the containing view is destroyed', () => {
|
|
let queryInstance: QueryList<any>;
|
|
|
|
const SimpleComponentWithQuery = createComponent(
|
|
'some-component-with-query',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
elementStart(1, 'div', null, ['foo', '']);
|
|
elementEnd();
|
|
}
|
|
},
|
|
[], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], false, QUERY_READ_FROM_NODE);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
let tmp: any;
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) &&
|
|
(ctx.query = queryInstance = tmp as QueryList<any>);
|
|
}
|
|
});
|
|
|
|
function createTemplate() { container(0); }
|
|
|
|
function updateTemplate() {
|
|
containerRefreshStart(0);
|
|
{
|
|
if (condition) {
|
|
let rf1 = embeddedViewStart(1);
|
|
{
|
|
if (rf1 & RenderFlags.Create) {
|
|
elementStart(0, 'some-component-with-query');
|
|
elementEnd();
|
|
}
|
|
}
|
|
embeddedViewEnd();
|
|
}
|
|
}
|
|
containerRefreshEnd();
|
|
}
|
|
|
|
/**
|
|
* % if (condition) {
|
|
* <some-component-with-query></some-component-with-query>
|
|
* %}
|
|
*/
|
|
let condition = true;
|
|
const t = new TemplateFixture(createTemplate, updateTemplate, [SimpleComponentWithQuery]);
|
|
expect(t.html).toEqual('<some-component-with-query><div></div></some-component-with-query>');
|
|
expect((queryInstance !.changes as EventEmitter<any>).closed).toBeFalsy();
|
|
|
|
condition = false;
|
|
t.update();
|
|
expect(t.html).toEqual('');
|
|
expect((queryInstance !.changes as EventEmitter<any>).closed).toBeTruthy();
|
|
});
|
|
});
|
|
|
|
describe('content', () => {
|
|
|
|
it('should support content queries for directives', () => {
|
|
let withContentInstance: WithContentDirective;
|
|
|
|
class WithContentDirective {
|
|
// @ContentChildren('foo') foos;
|
|
// TODO(issue/24571): remove '!'.
|
|
foos !: QueryList<ElementRef>;
|
|
|
|
static ngComponentDef = defineDirective({
|
|
type: WithContentDirective,
|
|
selectors: [['', 'with-content', '']],
|
|
factory: () => new WithContentDirective(),
|
|
contentQueries:
|
|
() => { registerContentQuery(query(null, ['foo'], true, QUERY_READ_FROM_NODE)); },
|
|
contentQueriesRefresh: (dirIndex: number, queryStartIdx: number) => {
|
|
let tmp: any;
|
|
withContentInstance = loadDirective<WithContentDirective>(dirIndex);
|
|
queryRefresh(tmp = loadQueryList<ElementRef>(queryStartIdx)) &&
|
|
(withContentInstance.foos = tmp);
|
|
}
|
|
});
|
|
}
|
|
|
|
/**
|
|
* <div with-content>
|
|
* <span #foo></span>
|
|
* </div>
|
|
* class Cmpt {
|
|
* }
|
|
*/
|
|
const AppComponent = createComponent('app-component', function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
elementStart(0, 'div', [AttributeMarker.SelectOnly, 'with-content']);
|
|
{ element(1, 'span', null, ['foo', '']); }
|
|
elementEnd();
|
|
}
|
|
}, [WithContentDirective]);
|
|
|
|
const fixture = new ComponentFixture(AppComponent);
|
|
expect(withContentInstance !.foos.length).toBe(1);
|
|
});
|
|
|
|
// https://stackblitz.com/edit/angular-wlenwd?file=src%2Fapp%2Fapp.component.ts
|
|
it('should support view and content queries matching the same element', () => {
|
|
let withContentComponentInstance: WithContentComponent;
|
|
|
|
class WithContentComponent {
|
|
// @ContentChildren('foo') foos;
|
|
// TODO(issue/24571): remove '!'.
|
|
foos !: QueryList<ElementRef>;
|
|
|
|
static ngComponentDef = defineComponent({
|
|
type: WithContentComponent,
|
|
selectors: [['with-content']],
|
|
factory: () => new WithContentComponent(),
|
|
contentQueries:
|
|
() => { registerContentQuery(query(null, ['foo'], true, QUERY_READ_FROM_NODE)); },
|
|
template: (rf: RenderFlags, ctx: WithContentComponent) => {
|
|
// intentionally left empty, don't need anything for this test
|
|
},
|
|
contentQueriesRefresh: (dirIndex: number, queryStartIdx: number) => {
|
|
let tmp: any;
|
|
withContentComponentInstance = loadDirective<WithContentComponent>(dirIndex);
|
|
queryRefresh(tmp = loadQueryList<ElementRef>(queryStartIdx)) &&
|
|
(withContentComponentInstance.foos = tmp);
|
|
},
|
|
});
|
|
}
|
|
|
|
/**
|
|
* <with-content>
|
|
* <div #foo></div>
|
|
* </with-content>
|
|
* <div id="after" #bar></div>
|
|
* class Cmpt {
|
|
* @ViewChildren('foo, bar') foos;
|
|
* }
|
|
*/
|
|
const AppComponent = createComponent(
|
|
'app-component',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
elementStart(1, 'with-content');
|
|
{ element(2, 'div', null, ['foo', '']); }
|
|
elementEnd();
|
|
element(4, 'div', ['id', 'after'], ['bar', '']);
|
|
}
|
|
},
|
|
[WithContentComponent], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo', 'bar'], true, QUERY_READ_FROM_NODE);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
let tmp: any;
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.foos = tmp as QueryList<any>);
|
|
}
|
|
});
|
|
|
|
const fixture = new ComponentFixture(AppComponent);
|
|
const viewQList = fixture.component.foos;
|
|
|
|
expect(viewQList.length).toBe(2);
|
|
expect(withContentComponentInstance !.foos.length).toBe(1);
|
|
expect(viewQList.first.nativeElement)
|
|
.toBe(withContentComponentInstance !.foos.first.nativeElement);
|
|
expect(viewQList.last.nativeElement.id).toBe('after');
|
|
});
|
|
|
|
it('should report results to appropriate queries where content queries are nested', () => {
|
|
|
|
class QueryDirective {
|
|
fooBars: any;
|
|
static ngDirectiveDef = defineDirective({
|
|
type: QueryDirective,
|
|
selectors: [['', 'query', '']],
|
|
exportAs: 'query',
|
|
factory: () => new QueryDirective(),
|
|
contentQueries: () => {
|
|
// @ContentChildren('foo, bar, baz', {descendants: true}) fooBars:
|
|
// QueryList<ElementRef>;
|
|
registerContentQuery(query(null, ['foo', 'bar', 'baz'], true, QUERY_READ_FROM_NODE));
|
|
},
|
|
contentQueriesRefresh: (dirIndex: number, queryStartIdx: number) => {
|
|
let tmp: any;
|
|
const instance = loadDirective<QueryDirective>(dirIndex);
|
|
queryRefresh(tmp = loadQueryList<ElementRef>(queryStartIdx)) &&
|
|
(instance.fooBars = tmp);
|
|
},
|
|
});
|
|
}
|
|
|
|
let outInstance: QueryDirective;
|
|
let inInstance: QueryDirective;
|
|
|
|
const AppComponent = createComponent(
|
|
'app-component',
|
|
/**
|
|
* <div query #out="query">
|
|
* <span #foo></span>
|
|
* <div query #in="query">
|
|
* <span #bar></span>
|
|
* </div>
|
|
* <span #baz></span>
|
|
* </div>
|
|
*/
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
elementStart(0, 'div', [AttributeMarker.SelectOnly, 'query'], ['out', 'query']);
|
|
{
|
|
element(2, 'span', ['id', 'foo'], ['foo', '']);
|
|
elementStart(4, 'div', [AttributeMarker.SelectOnly, 'query'], ['in', 'query']);
|
|
{ element(6, 'span', ['id', 'bar'], ['bar', '']); }
|
|
elementEnd();
|
|
element(8, 'span', ['id', 'baz'], ['baz', '']);
|
|
}
|
|
elementEnd();
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
outInstance = load<QueryDirective>(1);
|
|
inInstance = load<QueryDirective>(5);
|
|
}
|
|
},
|
|
[QueryDirective]);
|
|
|
|
const fixture = new ComponentFixture(AppComponent);
|
|
expect(outInstance !.fooBars.length).toBe(3);
|
|
expect(inInstance !.fooBars.length).toBe(1);
|
|
});
|
|
|
|
it('should respect shallow flag on content queries when mixing deep and shallow queries',
|
|
() => {
|
|
class ShallowQueryDirective {
|
|
foos: any;
|
|
static ngDirectiveDef = defineDirective({
|
|
type: ShallowQueryDirective,
|
|
selectors: [['', 'shallow-query', '']],
|
|
exportAs: 'shallow-query',
|
|
factory: () => new ShallowQueryDirective(),
|
|
contentQueries: () => {
|
|
// @ContentChildren('foo', {descendants: false}) foos: QueryList<ElementRef>;
|
|
registerContentQuery(query(null, ['foo'], false, QUERY_READ_FROM_NODE));
|
|
},
|
|
contentQueriesRefresh: (dirIndex: number, queryStartIdx: number) => {
|
|
let tmp: any;
|
|
const instance = loadDirective<ShallowQueryDirective>(dirIndex);
|
|
queryRefresh(tmp = loadQueryList<ElementRef>(queryStartIdx)) &&
|
|
(instance.foos = tmp);
|
|
},
|
|
});
|
|
}
|
|
|
|
class DeepQueryDirective {
|
|
foos: any;
|
|
static ngDirectiveDef = defineDirective({
|
|
type: DeepQueryDirective,
|
|
selectors: [['', 'deep-query', '']],
|
|
exportAs: 'deep-query',
|
|
factory: () => new DeepQueryDirective(),
|
|
contentQueries: () => {
|
|
// @ContentChildren('foo', {descendants: false}) foos: QueryList<ElementRef>;
|
|
registerContentQuery(query(null, ['foo'], true, QUERY_READ_FROM_NODE));
|
|
},
|
|
contentQueriesRefresh: (dirIndex: number, queryStartIdx: number) => {
|
|
let tmp: any;
|
|
const instance = loadDirective<DeepQueryDirective>(dirIndex);
|
|
queryRefresh(tmp = loadQueryList<ElementRef>(queryStartIdx)) &&
|
|
(instance.foos = tmp);
|
|
},
|
|
});
|
|
}
|
|
|
|
let shallowInstance: ShallowQueryDirective;
|
|
let deepInstance: DeepQueryDirective;
|
|
|
|
const AppComponent = createComponent(
|
|
'app-component',
|
|
/**
|
|
* <div shallow-query #shallow="shallow-query" deep-query #deep="deep-query">
|
|
* <span #foo></span>
|
|
* </div>
|
|
*/
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
elementStart(
|
|
0, 'div', [AttributeMarker.SelectOnly, 'shallow-query', 'deep-query'],
|
|
['shallow', 'shallow-query', 'deep', 'deep-query']);
|
|
{ element(3, 'span', ['id', 'foo'], ['foo', '']); }
|
|
elementEnd();
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
shallowInstance = load<ShallowQueryDirective>(1);
|
|
deepInstance = load<DeepQueryDirective>(2);
|
|
}
|
|
},
|
|
[ShallowQueryDirective, DeepQueryDirective]);
|
|
|
|
const fixture = new ComponentFixture(AppComponent);
|
|
expect(shallowInstance !.foos.length).toBe(1);
|
|
expect(deepInstance !.foos.length).toBe(1);
|
|
});
|
|
});
|
|
});
|