2564 lines
90 KiB
TypeScript
2564 lines
90 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 {AttributeMarker, QueryList, defineComponent, defineDirective, detectChanges} from '../../src/render3/index';
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import {getNativeByIndex} from '../../src/render3/util';
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import {bind, container, containerRefreshEnd, containerRefreshStart, directiveInject, element, elementContainerEnd, elementContainerStart, elementEnd, elementProperty, elementStart, embeddedViewEnd, embeddedViewStart, load, loadQueryList, reference, registerContentQuery, template, text} 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 {getViewData} from '../../src/render3/state';
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import {templateRefExtractor} from '../../src/render3/view_engine_compatibility_prebound';
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import {NgForOf, NgIf, NgTemplateOutlet} from './common_with_def';
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import {ComponentFixture, TemplateFixture, createComponent, createDirective, renderComponent, getDirectiveOnNode} 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 match projected 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 = getDirectiveOnNode(2);
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child2 = getDirectiveOnNode(3);
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}
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},
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4, 0, [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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element(1, 'div', ['child', '']);
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elToQuery = getNativeByIndex(1, getViewData());
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}
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},
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2, 0, [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, ElementRef);
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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 = getDirectiveOnNode(1, 1); }
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elementEnd();
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}
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},
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2, 0, [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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element(1, 'div', ['child', '']);
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}
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},
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2, 0, [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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element(1, 'div', null, ['foo', '']);
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elToQuery = getNativeByIndex(1, getViewData());
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element(3, 'div');
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}
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},
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4, 0, [], [],
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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);
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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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element(2, 'div', null, ['foo', '', 'bar', '']);
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elToQuery = getNativeByIndex(2, getViewData());
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element(5, 'div');
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}
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},
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6, 0, [], [],
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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);
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query(1, ['bar'], false);
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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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element(1, 'div', null, ['foo', '']);
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el1ToQuery = getNativeByIndex(1, getViewData());
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element(3, 'div');
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element(4, 'div', null, ['bar', '']);
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el2ToQuery = getNativeByIndex(4, getViewData());
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}
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},
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6, 0, [], [],
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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);
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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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element(1, 'div', null, ['foo', '']);
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elToQuery = getNativeByIndex(1, getViewData());
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element(3, 'div');
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}
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},
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4, 0, [], [],
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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);
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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 query for <ng-container> and read ElementRef with a native element pointing to comment node',
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() => {
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let elToQuery;
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/**
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* <ng-container #foo></ng-container>
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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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elementContainerStart(1, null, ['foo', '']);
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elToQuery = getNativeByIndex(1, getViewData());
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elementContainerEnd();
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}
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},
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3, 0, [], [],
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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, ElementRef);
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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).toEqual(elToQuery);
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});
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it('should query for <ng-container> and read ElementRef without explicit read option', () => {
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let elToQuery;
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/**
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* <ng-container #foo></ng-container>
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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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elementContainerStart(1, null, ['foo', '']);
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elToQuery = getNativeByIndex(1, getViewData());
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elementContainerEnd();
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}
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},
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3, 0, [], [],
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function(rf: RenderFlags, ctx: any) {
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if (rf & RenderFlags.Create) {
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query(0, ['foo'], 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.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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/**
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* BREAKING CHANGE: this tests asserts different behaviour as compared to Renderer2 when it
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* comes to descendants: false option and <ng-container>.
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*
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* Previous behaviour: queries with descendants: false would descend into <ng-container>.
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* New behaviour: queries with descendants: false would NOT descend into <ng-container>.
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*
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* Reasoning: the Renderer2 behaviour is inconsistent and hard to explain to users when it
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* comes to descendants: false interpretation (see
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* https://github.com/angular/angular/issues/14769#issuecomment-356609267) so we are changing
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* it in ngIvy.
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*
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* In ngIvy implementation queries with the descendants: false option are interpreted as
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* "don't descend" into children of a given element when looking for matches. In other words
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* only direct children of a given component / directive are checked for matches. This applies
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* to both regular elements (ex. <div>) and grouping elements (<ng-container>,
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* <ng-template>)).
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*
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* Grouping elements (<ng-container>, <ng-template>) are treated as regular elements since we
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* can query for <ng-container> and <ng-template>, so they behave like regular elements from
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* this point of view.
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*/
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it('should not descend into <ng-container> when descendants: false', () => {
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let elToQuery;
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/**
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* <ng-container>
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* <div #foo></div>
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* </ng-container>
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* class Cmpt {
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* @ViewChildren('foo') deep;
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* @ViewChildren('foo', {descendants: false}) shallow;
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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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elementContainerStart(2);
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{
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element(3, 'div', null, ['foo', '']);
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elToQuery = getNativeByIndex(3, getViewData());
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}
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elementContainerEnd();
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}
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},
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5, 0, [], [],
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function(rf: RenderFlags, ctx: any) {
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if (rf & RenderFlags.Create) {
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query(0, ['foo'], true, ElementRef);
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query(1, ['foo'], false, ElementRef);
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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.deep = tmp as QueryList<any>);
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queryRefresh(tmp = load<QueryList<any>>(1)) &&
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(ctx.shallow = tmp as QueryList<any>);
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}
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});
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const fixture = new ComponentFixture(Cmpt);
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const deepQList = fixture.component.deep;
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const shallowQList = fixture.component.shallow;
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expect(deepQList.length).toBe(1);
|
|
expect(shallowQList.length).toBe(0);
|
|
});
|
|
|
|
it('should read ViewContainerRef from element nodes when explicitly asked for', () => {
|
|
/**
|
|
* <div #foo></div>
|
|
* class Cmpt {
|
|
* @ViewChildren('foo', {read: ViewContainerRef}) query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent(
|
|
'cmpt',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
element(1, 'div', null, ['foo', '']);
|
|
}
|
|
},
|
|
3, 0, [], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], false, ViewContainerRef);
|
|
}
|
|
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(isViewContainerRef(qList.first)).toBeTruthy();
|
|
});
|
|
|
|
it('should read ViewContainerRef from container nodes when explicitly asked for', () => {
|
|
/**
|
|
* <ng-template #foo></ng-template>
|
|
* class Cmpt {
|
|
* @ViewChildren('foo', {read: ViewContainerRef}) query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent(
|
|
'cmpt',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
template(1, null, 0, 0, null, null, ['foo', '']);
|
|
}
|
|
},
|
|
3, 0, [], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], false, ViewContainerRef);
|
|
}
|
|
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(isViewContainerRef(qList.first)).toBeTruthy();
|
|
});
|
|
|
|
it('should read ElementRef with a native element pointing to comment DOM node from containers',
|
|
() => {
|
|
/**
|
|
* <ng-template #foo></ng-template>
|
|
* class Cmpt {
|
|
* @ViewChildren('foo', {read: ElementRef}) query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent(
|
|
'cmpt',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
template(1, null, 0, 0, null, null, ['foo', '']);
|
|
}
|
|
},
|
|
3, 0, [], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], false, ElementRef);
|
|
}
|
|
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(isElementRef(qList.first)).toBeTruthy();
|
|
expect(qList.first.nativeElement.nodeType).toBe(8); // Node.COMMENT_NODE = 8
|
|
});
|
|
|
|
it('should read TemplateRef from container nodes by default', () => {
|
|
// http://plnkr.co/edit/BVpORly8wped9I3xUYsX?p=preview
|
|
/**
|
|
* <ng-template #foo></ng-template>
|
|
* class Cmpt {
|
|
* @ViewChildren('foo') query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent(
|
|
'cmpt',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
template(1, null, 0, 0, null, null, ['foo', '']);
|
|
}
|
|
},
|
|
3, 0, [], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], undefined);
|
|
}
|
|
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 TemplateRef from container nodes when explicitly asked for', () => {
|
|
/**
|
|
* <ng-template #foo></ng-template>
|
|
* class Cmpt {
|
|
* @ViewChildren('foo', {read: TemplateRef}) query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent(
|
|
'cmpt',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
template(1, null, 0, 0, null, null, ['foo', '']);
|
|
}
|
|
},
|
|
3, 0, [], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], false, TemplateRef);
|
|
}
|
|
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 = getDirectiveOnNode(1);
|
|
}
|
|
},
|
|
3, 0, [Child], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], true);
|
|
}
|
|
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(),
|
|
consts: 0,
|
|
vars: 0,
|
|
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']);
|
|
}
|
|
},
|
|
3, 0, [Child], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], true);
|
|
}
|
|
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 = getDirectiveOnNode(1);
|
|
}
|
|
},
|
|
3, 0, [Child], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], true);
|
|
}
|
|
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 = getDirectiveOnNode(1, 0);
|
|
child2Instance = getDirectiveOnNode(1, 1);
|
|
}
|
|
},
|
|
4, 0, [Child1, Child2], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo', 'bar'], true);
|
|
}
|
|
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 = getDirectiveOnNode(2);
|
|
}
|
|
},
|
|
5, 0, [Child], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], true);
|
|
query(1, ['bar'], true);
|
|
}
|
|
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) {
|
|
element(1, 'div', ['child', ''], ['foo', 'child']);
|
|
div = getNativeByIndex(1, getViewData());
|
|
}
|
|
},
|
|
3, 0, [Child], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], undefined, ElementRef);
|
|
}
|
|
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) {
|
|
element(1, 'div', ['child', ''], ['foo', '', 'bar', 'child']);
|
|
div = getNativeByIndex(1, getViewData());
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
childInstance = getDirectiveOnNode(1);
|
|
}
|
|
},
|
|
4, 0, [Child], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo', 'bar'], undefined);
|
|
}
|
|
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 selector-based 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', '']);
|
|
}
|
|
},
|
|
3, 0, [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 {component} = new ComponentFixture(Cmpt);
|
|
const qList = component.query;
|
|
expect(qList.length).toBe(0);
|
|
});
|
|
|
|
it('should not add results to directive-based query if requested token cant be read', () => {
|
|
const Child = createDirective('child');
|
|
const OtherChild = createDirective('otherchild');
|
|
|
|
/**
|
|
* <div child></div>
|
|
* class Cmpt {
|
|
* @ViewChildren(Child, {read: OtherChild}) query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent(
|
|
'cmpt',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
element(1, 'div', ['child', '']);
|
|
}
|
|
},
|
|
2, 0, [Child, OtherChild], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, Child, false, OtherChild);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
let tmp: any;
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
|
|
}
|
|
});
|
|
|
|
const {component} = new ComponentFixture(Cmpt);
|
|
const qList = component.query;
|
|
expect(qList.length).toBe(0);
|
|
});
|
|
|
|
it('should not add results to directive-based query if only read token matches', () => {
|
|
const Child = createDirective('child');
|
|
const OtherChild = createDirective('otherchild');
|
|
|
|
/**
|
|
* <div child></div>
|
|
* class Cmpt {
|
|
* @ViewChildren(OtherChild, {read: Child}) query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent(
|
|
'cmpt',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
element(1, 'div', ['child', '']);
|
|
}
|
|
},
|
|
2, 0, [Child, OtherChild], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, OtherChild, false, Child);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
let tmp: any;
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
|
|
}
|
|
});
|
|
|
|
const {component} = new ComponentFixture(Cmpt);
|
|
const qList = component.query;
|
|
expect(qList.length).toBe(0);
|
|
});
|
|
|
|
it('should not add results to TemplateRef-based query if only read token matches', () => {
|
|
/**
|
|
* <div></div>
|
|
* class Cmpt {
|
|
* @ViewChildren(TemplateRef, {read: ElementRef}) query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent(
|
|
'cmpt',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
element(1, 'div');
|
|
}
|
|
},
|
|
2, 0, [], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, TemplateRef as any, false, ElementRef);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
let tmp: any;
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
|
|
}
|
|
});
|
|
|
|
const {component} = new ComponentFixture(Cmpt);
|
|
const qList = component.query;
|
|
expect(qList.length).toBe(0);
|
|
});
|
|
|
|
it('should match using string selector and directive as a read argument', () => {
|
|
const Child = createDirective('child');
|
|
|
|
/**
|
|
* <div child #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', ['child', ''], ['foo', '']);
|
|
}
|
|
},
|
|
3, 0, [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 {component} = new ComponentFixture(Cmpt);
|
|
const qList = component.query;
|
|
expect(qList.length).toBe(1);
|
|
expect(qList.first instanceof Child).toBeTruthy();
|
|
});
|
|
|
|
it('should not add results to the query in case no match found (via TemplateRef)', () => {
|
|
const Child = createDirective('child');
|
|
|
|
/**
|
|
* <div child></div>
|
|
* class Cmpt {
|
|
* @ViewChildren(TemplateRef) query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent(
|
|
'cmpt',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
element(1, 'div', ['child', '']);
|
|
}
|
|
},
|
|
2, 0, [Child], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, TemplateRef as any, false);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
let tmp: any;
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
|
|
}
|
|
});
|
|
|
|
const {component} = new ComponentFixture(Cmpt);
|
|
const qList = component.query;
|
|
expect(qList.length).toBe(0);
|
|
});
|
|
|
|
it('should query templates if the type is TemplateRef (and respect "read" option)', () => {
|
|
function Cmpt_Template_1(rf: RenderFlags, ctx1: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
elementStart(0, 'div');
|
|
text(1, 'Test');
|
|
elementEnd();
|
|
}
|
|
}
|
|
/**
|
|
* <ng-template #foo><div>Test</div></ng-template>
|
|
* <ng-template #bar><div>Test</div></ng-template>
|
|
* <ng-template #baz><div>Test</div></ng-template>
|
|
* class Cmpt {
|
|
* @ViewChildren(TemplateRef) tmplQuery;
|
|
* @ViewChildren(TemplateRef, {read: ElementRef}) elemQuery;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent(
|
|
'cmpt',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
template(2, Cmpt_Template_1, 2, 0, null, null, ['foo', ''], templateRefExtractor);
|
|
template(3, Cmpt_Template_1, 2, 0, null, null, ['bar', ''], templateRefExtractor);
|
|
template(4, Cmpt_Template_1, 2, 0, null, null, ['baz', ''], templateRefExtractor);
|
|
}
|
|
},
|
|
5, 0, [], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, TemplateRef as any, false);
|
|
query(1, TemplateRef as any, false, ElementRef);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
let tmp: any;
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) &&
|
|
(ctx.tmplQuery = tmp as QueryList<any>);
|
|
queryRefresh(tmp = load<QueryList<any>>(1)) &&
|
|
(ctx.elemQuery = tmp as QueryList<any>);
|
|
}
|
|
});
|
|
|
|
const {component} = new ComponentFixture(Cmpt);
|
|
|
|
// check template-based query set
|
|
const tmplQList = component.tmplQuery;
|
|
expect(tmplQList.length).toBe(3);
|
|
expect(isTemplateRef(tmplQList.first)).toBeTruthy();
|
|
|
|
// check element-based query set
|
|
const elemQList = component.elemQuery;
|
|
expect(elemQList.length).toBe(3);
|
|
expect(isElementRef(elemQList.first)).toBeTruthy();
|
|
});
|
|
|
|
});
|
|
});
|
|
|
|
describe('view boundaries', () => {
|
|
|
|
describe('ViewContainerRef', () => {
|
|
|
|
let directiveInstances: ViewContainerManipulatorDirective[] = [];
|
|
|
|
class ViewContainerManipulatorDirective {
|
|
static ngDirectiveDef = defineDirective({
|
|
type: ViewContainerManipulatorDirective,
|
|
selectors: [['', 'vc', '']],
|
|
factory: () => {
|
|
const directiveInstance =
|
|
new ViewContainerManipulatorDirective(directiveInject(ViewContainerRef as any));
|
|
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', () => {
|
|
|
|
function Cmpt_Template_1(rf: RenderFlags, ctx1: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
element(0, 'div', null, ['foo', '']);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* <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) {
|
|
template(1, Cmpt_Template_1, 2, 0, null, ['ngIf', '']);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
elementProperty(1, 'ngIf', bind(ctx.value));
|
|
}
|
|
},
|
|
3, 1, [NgIf], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], true);
|
|
}
|
|
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', () => {
|
|
|
|
function Cmpt_Template_1(rf1: RenderFlags, row: NgForOfContext<string>) {
|
|
if (rf1 & RenderFlags.Create) {
|
|
element(0, 'div', null, ['foo', '']);
|
|
}
|
|
if (rf1 & RenderFlags.Update) {
|
|
elementProperty(0, 'id', bind(row.$implicit));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* <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']],
|
|
consts: 3,
|
|
vars: 1,
|
|
template: function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
template(1, Cmpt_Template_1, 2, 1, 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);
|
|
}
|
|
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<{}>;
|
|
|
|
function Cmpt_Template_1(rf: RenderFlags, ctx: {idx: number}) {
|
|
if (rf & RenderFlags.Create) {
|
|
element(0, 'div', null, ['foo', '']);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
elementProperty(0, 'id', bind('foo1_' + ctx.idx));
|
|
}
|
|
}
|
|
|
|
function Cmpt_Template_5(rf: RenderFlags, ctx: {idx: number}) {
|
|
if (rf & RenderFlags.Create) {
|
|
element(0, 'div', null, ['foo', '']);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
elementProperty(0, 'id', bind('foo2_' + ctx.idx));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* <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) {
|
|
template(
|
|
1, Cmpt_Template_1, 2, 1, null, null, ['tpl1', ''], templateRefExtractor);
|
|
element(3, 'div', ['id', 'middle'], ['foo', '']);
|
|
template(
|
|
5, Cmpt_Template_5, 2, 1, null, null, ['tpl2', ''], templateRefExtractor);
|
|
template(7, null, 0, 0, null, [AttributeMarker.SelectOnly, 'vc']);
|
|
}
|
|
|
|
if (rf & RenderFlags.Update) {
|
|
tpl1 = reference(2);
|
|
tpl2 = reference(6);
|
|
}
|
|
|
|
},
|
|
9, 0, [ViewContainerManipulatorDirective], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], true);
|
|
}
|
|
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<{}>;
|
|
|
|
function Cmpt_Template_1(rf: RenderFlags, ctx: {idx: number, container_idx: number}) {
|
|
if (rf & RenderFlags.Create) {
|
|
element(0, 'div', null, ['foo', '']);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
elementProperty(0, 'id', bind('foo_' + ctx.container_idx + '_' + ctx.idx));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* <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']],
|
|
consts: 5,
|
|
vars: 0,
|
|
template: function(rf: RenderFlags, ctx: any) {
|
|
let tmp: any;
|
|
if (rf & RenderFlags.Create) {
|
|
template(1, Cmpt_Template_1, 2, 1, null, [], ['tpl', ''], templateRefExtractor);
|
|
template(3, null, 0, 0, null, [AttributeMarker.SelectOnly, 'vc']);
|
|
template(4, null, 0, 0, null, [AttributeMarker.SelectOnly, 'vc']);
|
|
}
|
|
|
|
if (rf & RenderFlags.Update) {
|
|
tpl = reference(2);
|
|
}
|
|
|
|
},
|
|
viewQuery: (rf: RenderFlags, cmpt: Cmpt) => {
|
|
let tmp: any;
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], true);
|
|
}
|
|
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', () => {
|
|
|
|
function MyApp_Template_1(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
element(0, 'span', ['id', 'from_tpl'], ['foo', '']);
|
|
}
|
|
}
|
|
|
|
class MyApp {
|
|
show = false;
|
|
query: any;
|
|
static ngComponentDef = defineComponent({
|
|
type: MyApp,
|
|
factory: () => new MyApp(),
|
|
selectors: [['my-app']],
|
|
consts: 5,
|
|
vars: 1,
|
|
/**
|
|
* <ng-template #tpl><span #foo id="from_tpl"></span></ng-template>
|
|
* <ng-template [ngTemplateOutlet]="show ? tpl : null"></ng-template>
|
|
*/
|
|
template: (rf: RenderFlags, myApp: MyApp) => {
|
|
if (rf & RenderFlags.Create) {
|
|
template(
|
|
1, MyApp_Template_1, 2, 0, undefined, undefined, ['tpl', ''],
|
|
templateRefExtractor);
|
|
template(3, null, 0, 0, null, [AttributeMarker.SelectOnly, 'ngTemplateOutlet']);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
const tplRef = reference(2);
|
|
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);
|
|
}
|
|
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, 2, 0);
|
|
{
|
|
if (rf1 & RenderFlags.Create) {
|
|
element(0, 'div', null, ['foo', '']);
|
|
firstEl = getNativeByIndex(0, getViewData());
|
|
}
|
|
}
|
|
embeddedViewEnd();
|
|
}
|
|
}
|
|
containerRefreshEnd();
|
|
}
|
|
},
|
|
2, 0, [], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], true);
|
|
}
|
|
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) {
|
|
element(1, 'span', null, ['foo', '']);
|
|
firstEl = getNativeByIndex(1, getViewData());
|
|
container(3);
|
|
element(4, 'span', null, ['foo', '']);
|
|
lastEl = getNativeByIndex(4, getViewData());
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
containerRefreshStart(3);
|
|
{
|
|
if (ctx.exp) {
|
|
let rf1 = embeddedViewStart(1, 2, 0);
|
|
{
|
|
if (rf1 & RenderFlags.Create) {
|
|
element(0, 'div', null, ['foo', '']);
|
|
viewEl = getNativeByIndex(0, getViewData());
|
|
}
|
|
}
|
|
embeddedViewEnd();
|
|
}
|
|
}
|
|
containerRefreshEnd();
|
|
}
|
|
},
|
|
6, 0, [], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], true);
|
|
}
|
|
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, 2, 0);
|
|
{
|
|
if (rf0 & RenderFlags.Create) {
|
|
element(0, 'div', null, ['foo', '']);
|
|
firstEl = getNativeByIndex(0, getViewData());
|
|
}
|
|
}
|
|
embeddedViewEnd();
|
|
}
|
|
if (ctx.exp2) {
|
|
let rf1 = embeddedViewStart(1, 2, 0);
|
|
{
|
|
if (rf1 & RenderFlags.Create) {
|
|
element(0, 'span', null, ['foo', '']);
|
|
lastEl = getNativeByIndex(0, getViewData());
|
|
}
|
|
}
|
|
embeddedViewEnd();
|
|
}
|
|
}
|
|
containerRefreshEnd();
|
|
}
|
|
},
|
|
2, 0, [], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], true);
|
|
}
|
|
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, 3, 0);
|
|
{
|
|
if (rf0 & RenderFlags.Create) {
|
|
element(0, 'div', null, ['foo', '']);
|
|
firstEl = getNativeByIndex(0, getViewData());
|
|
container(2);
|
|
}
|
|
if (rf0 & RenderFlags.Update) {
|
|
containerRefreshStart(2);
|
|
{
|
|
if (ctx.exp2) {
|
|
let rf2 = embeddedViewStart(0, 2, 0);
|
|
{
|
|
if (rf2) {
|
|
element(0, 'span', null, ['foo', '']);
|
|
lastEl = getNativeByIndex(0, getViewData());
|
|
}
|
|
}
|
|
embeddedViewEnd();
|
|
}
|
|
}
|
|
containerRefreshEnd();
|
|
}
|
|
}
|
|
embeddedViewEnd();
|
|
}
|
|
}
|
|
containerRefreshEnd();
|
|
}
|
|
},
|
|
2, 0, [], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], true);
|
|
}
|
|
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 #foo></div>
|
|
* </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);
|
|
element(3, 'span', null, ['foo', '']);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
containerRefreshStart(2);
|
|
{
|
|
if (ctx.exp) {
|
|
let rf0 = embeddedViewStart(0, 4, 0);
|
|
{
|
|
if (rf0 & RenderFlags.Create) {
|
|
elementStart(0, 'div', null, ['foo', '']);
|
|
{ element(2, 'div', null, ['foo', '']); }
|
|
elementEnd();
|
|
}
|
|
}
|
|
embeddedViewEnd();
|
|
}
|
|
}
|
|
containerRefreshEnd();
|
|
}
|
|
},
|
|
5, 0, [], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], true);
|
|
query(1, ['foo'], false);
|
|
}
|
|
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(3);
|
|
|
|
// embedded % if blocks should behave the same way as *ngIf, namely they
|
|
// should match shallow queries on the first level of elements underneath
|
|
// the embedded view boundary.
|
|
expect(shallow.length).toBe(2);
|
|
|
|
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) {
|
|
element(1, 'div', null, ['foo', '']);
|
|
}
|
|
},
|
|
2, 0, [], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], false);
|
|
}
|
|
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, 1, 0);
|
|
{
|
|
if (rf1 & RenderFlags.Create) {
|
|
element(0, 'some-component-with-query');
|
|
}
|
|
}
|
|
embeddedViewEnd();
|
|
}
|
|
}
|
|
containerRefreshEnd();
|
|
}
|
|
|
|
/**
|
|
* % if (condition) {
|
|
* <some-component-with-query></some-component-with-query>
|
|
* %}
|
|
*/
|
|
let condition = true;
|
|
const t =
|
|
new TemplateFixture(createTemplate, updateTemplate, 1, 0, [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();
|
|
});
|
|
});
|
|
|
|
it('should restore queries if view changes', () => {
|
|
class SomeDir {
|
|
constructor(public vcr: ViewContainerRef, public temp: TemplateRef<any>) {
|
|
this.vcr.createEmbeddedView(this.temp);
|
|
}
|
|
|
|
static ngDirectiveDef = defineDirective({
|
|
type: SomeDir,
|
|
selectors: [['', 'someDir', '']],
|
|
factory: () => new SomeDir(
|
|
directiveInject(ViewContainerRef as any), directiveInject(TemplateRef as any))
|
|
});
|
|
}
|
|
|
|
function AppComponent_Template_1(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
element(0, 'div');
|
|
}
|
|
}
|
|
|
|
/**
|
|
* <div *someDir></div>
|
|
* <div #foo></div>
|
|
*/
|
|
const AppComponent = createComponent(
|
|
'app',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
template(
|
|
1, AppComponent_Template_1, 1, 0, null, [AttributeMarker.SelectOnly, 'someDir']);
|
|
element(2, 'div', null, ['foo', '']);
|
|
}
|
|
},
|
|
4, 0, [SomeDir], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo'], true);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
let tmp: any;
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
|
|
}
|
|
});
|
|
|
|
const fixture = new ComponentFixture(AppComponent);
|
|
expect(fixture.component.query.length).toBe(1);
|
|
});
|
|
|
|
describe('content', () => {
|
|
let withContentInstance: WithContentDirective|null;
|
|
let shallowCompInstance: ShallowComp|null;
|
|
|
|
beforeEach(() => {
|
|
withContentInstance = null;
|
|
shallowCompInstance = null;
|
|
});
|
|
|
|
class WithContentDirective {
|
|
// @ContentChildren('foo')
|
|
foos !: QueryList<ElementRef>;
|
|
contentInitQuerySnapshot = 0;
|
|
contentCheckedQuerySnapshot = 0;
|
|
|
|
ngAfterContentInit() { this.contentInitQuerySnapshot = this.foos ? this.foos.length : 0; }
|
|
|
|
ngAfterContentChecked() {
|
|
this.contentCheckedQuerySnapshot = this.foos ? this.foos.length : 0;
|
|
}
|
|
|
|
static ngComponentDef = defineDirective({
|
|
type: WithContentDirective,
|
|
selectors: [['', 'with-content', '']],
|
|
factory: () => new WithContentDirective(),
|
|
contentQueries:
|
|
(dirIndex) => { registerContentQuery(query(null, ['foo'], true), dirIndex); },
|
|
contentQueriesRefresh: (dirIndex: number, queryStartIdx: number) => {
|
|
let tmp: any;
|
|
withContentInstance = load<WithContentDirective>(dirIndex);
|
|
queryRefresh(tmp = loadQueryList<ElementRef>(queryStartIdx)) &&
|
|
(withContentInstance.foos = tmp);
|
|
}
|
|
});
|
|
}
|
|
|
|
class ShallowComp {
|
|
// @ContentChildren('foo', {descendants: false})
|
|
foos !: QueryList<ElementRef>;
|
|
|
|
static ngComponentDef = defineComponent({
|
|
type: ShallowComp,
|
|
selectors: [['shallow-comp']],
|
|
factory: () => new ShallowComp(),
|
|
template: function(rf: RenderFlags, ctx: any) {},
|
|
consts: 0,
|
|
vars: 0,
|
|
contentQueries:
|
|
(dirIndex) => { registerContentQuery(query(null, ['foo'], false), dirIndex); },
|
|
contentQueriesRefresh: (dirIndex: number, queryStartIdx: number) => {
|
|
let tmp: any;
|
|
shallowCompInstance = load<ShallowComp>(dirIndex);
|
|
queryRefresh(tmp = loadQueryList<ElementRef>(queryStartIdx)) &&
|
|
(shallowCompInstance.foos = tmp);
|
|
}
|
|
});
|
|
}
|
|
|
|
it('should support content queries for directives', () => {
|
|
/**
|
|
* <div with-content>
|
|
* <span #foo></span>
|
|
* </div>
|
|
*/
|
|
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();
|
|
}
|
|
}, 3, 0, [WithContentDirective]);
|
|
|
|
const fixture = new ComponentFixture(AppComponent);
|
|
expect(withContentInstance !.foos.length)
|
|
.toBe(1, `Expected content query to match <span #foo>.`);
|
|
|
|
expect(withContentInstance !.contentInitQuerySnapshot)
|
|
.toBe(
|
|
1,
|
|
`Expected content query results to be available when ngAfterContentInit was called.`);
|
|
|
|
expect(withContentInstance !.contentCheckedQuerySnapshot)
|
|
.toBe(
|
|
1,
|
|
`Expected content query results to be available when ngAfterContentChecked was called.`);
|
|
});
|
|
|
|
it('should support content queries for directives within repeated embedded views', () => {
|
|
/**
|
|
* % for (let i = 0; i < 3; i++) {
|
|
* <div with-content>
|
|
* <span #foo></span>
|
|
* </div>
|
|
* % }
|
|
*/
|
|
const AppComponent = createComponent('app-component', function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
container(0);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
containerRefreshStart(0);
|
|
{
|
|
for (let i = 0; i < 3; i++) {
|
|
let rf = embeddedViewStart(1, 3, 0);
|
|
if (rf & RenderFlags.Create) {
|
|
elementStart(0, 'div', [AttributeMarker.SelectOnly, 'with-content']);
|
|
{ element(1, 'span', null, ['foo', '']); }
|
|
elementEnd();
|
|
}
|
|
embeddedViewEnd();
|
|
}
|
|
}
|
|
|
|
containerRefreshEnd();
|
|
}
|
|
}, 1, 0, [WithContentDirective]);
|
|
|
|
const fixture = new ComponentFixture(AppComponent);
|
|
expect(withContentInstance !.foos.length)
|
|
.toBe(1, `Expected content query to match <span #foo>.`);
|
|
|
|
expect(withContentInstance !.contentInitQuerySnapshot)
|
|
.toBe(
|
|
1,
|
|
`Expected content query results to be available when ngAfterContentInit was called.`);
|
|
|
|
expect(withContentInstance !.contentCheckedQuerySnapshot)
|
|
.toBe(
|
|
1,
|
|
`Expected content query results to be available when ngAfterContentChecked was called.`);
|
|
});
|
|
|
|
it('should support content query matches on directive hosts', () => {
|
|
/**
|
|
* <div with-content #foo>
|
|
* </div>
|
|
*/
|
|
const AppComponent = createComponent('app-component', function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
element(0, 'div', ['with-content', ''], ['foo', '']);
|
|
}
|
|
}, 2, 0, [WithContentDirective]);
|
|
|
|
const fixture = new ComponentFixture(AppComponent);
|
|
expect(withContentInstance !.foos.length)
|
|
.toBe(1, `Expected content query to match <div with-content #foo>.`);
|
|
});
|
|
|
|
it('should match shallow content queries in views inserted / removed by ngIf', () => {
|
|
function IfTemplate(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
element(0, 'div', null, ['foo', '']);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* <shallow-comp>
|
|
* <div *ngIf="showing" #foo></div>
|
|
* </shallow-comp>
|
|
*/
|
|
const AppComponent = createComponent('app-component', function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
elementStart(0, 'shallow-comp');
|
|
{ template(1, IfTemplate, 2, 0, null, [AttributeMarker.SelectOnly, 'ngIf', '']); }
|
|
elementEnd();
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
elementProperty(1, 'ngIf', bind(ctx.showing));
|
|
}
|
|
}, 2, 1, [ShallowComp, NgIf]);
|
|
|
|
const fixture = new ComponentFixture(AppComponent);
|
|
const qList = shallowCompInstance !.foos;
|
|
expect(qList.length).toBe(0);
|
|
|
|
fixture.component.showing = true;
|
|
fixture.update();
|
|
expect(qList.length).toBe(1);
|
|
|
|
fixture.component.showing = false;
|
|
fixture.update();
|
|
expect(qList.length).toBe(0);
|
|
});
|
|
|
|
|
|
// https://stackblitz.com/edit/angular-wlenwd?file=src%2Fapp%2Fapp.component.ts
|
|
it('should support view and content queries matching the same element', () => {
|
|
/**
|
|
* <div with-content>
|
|
* <div #foo></div>
|
|
* </div>
|
|
* <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, 'div', ['with-content', '']);
|
|
{ element(2, 'div', null, ['foo', '']); }
|
|
elementEnd();
|
|
element(4, 'div', ['id', 'after'], ['bar', '']);
|
|
}
|
|
},
|
|
6, 0, [WithContentDirective], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['foo', 'bar'], true);
|
|
}
|
|
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(withContentInstance !.foos.length).toBe(1);
|
|
expect(viewQList.first.nativeElement).toBe(withContentInstance !.foos.first.nativeElement);
|
|
expect(viewQList.last.nativeElement.id).toBe('after');
|
|
});
|
|
|
|
it('should not report deep content query matches found above content children', () => {
|
|
/**
|
|
* <div with-content>
|
|
* <div #foo id="yes"></div> <-- should match content query
|
|
* </div>
|
|
* <div #foo></div> <-- should not match content query
|
|
* class AppComponent {
|
|
* @ViewChildren('bar') bars: QueryList<ElementRef>;
|
|
* }
|
|
*/
|
|
const AppComponent = createComponent(
|
|
'app-component',
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
elementStart(1, 'div', ['with-content', '']);
|
|
{ element(2, 'div', ['id', 'yes'], ['foo', '']); }
|
|
elementEnd();
|
|
element(4, 'div', null, ['foo', '']);
|
|
}
|
|
},
|
|
6, 0, [WithContentDirective], [],
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
query(0, ['bar'], true);
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
let tmp: any;
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.bars = tmp as QueryList<any>);
|
|
}
|
|
});
|
|
|
|
const fixture = new ComponentFixture(AppComponent);
|
|
expect(withContentInstance !.foos.length).toBe(1);
|
|
expect(withContentInstance !.foos.first.nativeElement.id).toEqual('yes');
|
|
});
|
|
|
|
it('should report results to appropriate queries where deep content queries are nested', () => {
|
|
class QueryDirective {
|
|
fooBars: any;
|
|
static ngDirectiveDef = defineDirective({
|
|
type: QueryDirective,
|
|
selectors: [['', 'query', '']],
|
|
exportAs: 'query',
|
|
factory: () => new QueryDirective(),
|
|
contentQueries: (dirIndex) => {
|
|
// @ContentChildren('foo, bar, baz', {descendants: true}) fooBars:
|
|
// QueryList<ElementRef>;
|
|
registerContentQuery(query(null, ['foo', 'bar', 'baz'], true), dirIndex);
|
|
},
|
|
contentQueriesRefresh: (dirIndex: number, queryStartIdx: number) => {
|
|
let tmp: any;
|
|
const instance = load<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);
|
|
}
|
|
},
|
|
10, 0, [QueryDirective]);
|
|
|
|
const fixture = new ComponentFixture(AppComponent);
|
|
expect(outInstance !.fooBars.length).toBe(3);
|
|
expect(inInstance !.fooBars.length).toBe(1);
|
|
});
|
|
|
|
|
|
it('should support nested shallow content queries ', () => {
|
|
let outInstance: QueryDirective;
|
|
let inInstance: QueryDirective;
|
|
|
|
class QueryDirective {
|
|
fooBars: any;
|
|
static ngDirectiveDef = defineDirective({
|
|
type: QueryDirective,
|
|
selectors: [['', 'query', '']],
|
|
exportAs: 'query',
|
|
factory: () => new QueryDirective(),
|
|
contentQueries: (dirIndex) => {
|
|
// @ContentChildren('foo, bar, baz', {descendants: true}) fooBars:
|
|
// QueryList<ElementRef>;
|
|
registerContentQuery(query(null, ['foo'], false), dirIndex);
|
|
},
|
|
contentQueriesRefresh: (dirIndex: number, queryStartIdx: number) => {
|
|
let tmp: any;
|
|
const instance = load<QueryDirective>(dirIndex);
|
|
queryRefresh(tmp = loadQueryList<ElementRef>(queryStartIdx)) &&
|
|
(instance.fooBars = tmp);
|
|
},
|
|
});
|
|
}
|
|
|
|
const AppComponent = createComponent(
|
|
'app-component',
|
|
/**
|
|
* <div query #out="query">
|
|
* <div query #in="query" #foo>
|
|
* <span #foo></span>
|
|
* </div>
|
|
* </div>
|
|
*/
|
|
function(rf: RenderFlags, ctx: any) {
|
|
if (rf & RenderFlags.Create) {
|
|
elementStart(0, 'div', ['query', ''], ['out', 'query']);
|
|
{
|
|
elementStart(2, 'div', ['query', ''], ['in', 'query', 'foo', '']);
|
|
{ element(5, 'span', ['id', 'bar'], ['foo', '']); }
|
|
elementEnd();
|
|
}
|
|
elementEnd();
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
outInstance = load<QueryDirective>(1);
|
|
inInstance = load<QueryDirective>(3);
|
|
}
|
|
},
|
|
7, 0, [QueryDirective]);
|
|
|
|
const fixture = new ComponentFixture(AppComponent);
|
|
expect(outInstance !.fooBars.length).toBe(1);
|
|
expect(inInstance !.fooBars.length).toBe(2);
|
|
});
|
|
|
|
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: (dirIndex) => {
|
|
// @ContentChildren('foo', {descendants: false}) foos: QueryList<ElementRef>;
|
|
registerContentQuery(query(null, ['foo'], false), dirIndex);
|
|
},
|
|
contentQueriesRefresh: (dirIndex: number, queryStartIdx: number) => {
|
|
let tmp: any;
|
|
const instance = load<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: (dirIndex) => {
|
|
// @ContentChildren('foo', {descendants: false}) foos: QueryList<ElementRef>;
|
|
registerContentQuery(query(null, ['foo'], true), dirIndex);
|
|
},
|
|
contentQueriesRefresh: (dirIndex: number, queryStartIdx: number) => {
|
|
let tmp: any;
|
|
const instance = load<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>
|
|
* <span #foo></span>
|
|
* </div>
|
|
* </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', null, ['foo', '']);
|
|
elementStart(5, 'div');
|
|
{ element(6, 'span', null, ['foo', '']); }
|
|
elementEnd();
|
|
}
|
|
elementEnd();
|
|
}
|
|
if (rf & RenderFlags.Update) {
|
|
shallowInstance = load<ShallowQueryDirective>(1);
|
|
deepInstance = load<DeepQueryDirective>(2);
|
|
}
|
|
},
|
|
8, 0, [ShallowQueryDirective, DeepQueryDirective]);
|
|
|
|
const fixture = new ComponentFixture(AppComponent);
|
|
expect(shallowInstance !.foos.length).toBe(1);
|
|
expect(deepInstance !.foos.length).toBe(2);
|
|
});
|
|
});
|
|
});
|