968 lines
32 KiB
TypeScript
968 lines
32 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 {QUERY_READ_CONTAINER_REF, QUERY_READ_ELEMENT_REF, QUERY_READ_FROM_NODE, QUERY_READ_TEMPLATE_REF} from '../../src/render3/di';
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import {QueryList, defineComponent, detectChanges} from '../../src/render3/index';
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import {container, containerRefreshEnd, containerRefreshStart, elementEnd, elementStart, embeddedViewEnd, embeddedViewStart, load, loadDirective} from '../../src/render3/instructions';
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import {query, queryRefresh} from '../../src/render3/query';
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import {createComponent, createDirective, renderComponent} from './render_util';
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/**
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* Helper function to check if a given candidate object resembles ElementRef
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* @param candidate
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* @returns true if `ElementRef`.
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*/
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function isElementRef(candidate: any): boolean {
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return candidate.nativeElement != null;
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}
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/**
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* Helper function to check if a given candidate object resembles TemplateRef
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* @param candidate
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* @returns true if `TemplateRef`.
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*/
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function isTemplateRef(candidate: any): boolean {
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return candidate.createEmbeddedView != null && candidate.createComponent == null;
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}
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/**
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* Helper function to check if a given candidate object resembles ViewContainerRef
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* @param candidate
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* @returns true if `ViewContainerRef`.
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*/
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function isViewContainerRef(candidate: any): boolean {
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return candidate.createEmbeddedView != null && candidate.createComponent != null;
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}
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describe('query', () => {
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it('should project query children', () => {
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const Child = createComponent('child', function(ctx: any, cm: boolean) {});
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let child1 = null;
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let child2 = null;
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const Cmp = createComponent('cmp', function(ctx: any, cm: boolean) {
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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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let tmp: any;
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if (cm) {
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query(0, Child, false);
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query(1, Child, true);
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elementStart(2, Child);
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{
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child1 = loadDirective(0);
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elementStart(3, Child);
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{ child2 = loadDirective(1); }
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elementEnd();
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}
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elementEnd();
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}
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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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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('types predicate', () => {
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it('should query using type predicate and read a specified token', () => {
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const Child = createDirective();
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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('cmpt', function(ctx: any, cm: boolean) {
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let tmp: any;
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if (cm) {
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query(0, Child, false, QUERY_READ_ELEMENT_REF);
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elToQuery = elementStart(1, 'div', null, [Child]);
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elementEnd();
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}
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queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
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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 using type predicate and read another directive type', () => {
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const Child = createDirective();
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const OtherChild = createDirective();
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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('cmpt', function(ctx: any, cm: boolean) {
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let tmp: any;
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if (cm) {
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query(0, Child, false, OtherChild);
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elementStart(1, 'div', null, [Child, OtherChild]);
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{ otherChildInstance = loadDirective(1); }
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elementEnd();
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}
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queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
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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();
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const OtherChild = createDirective();
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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('cmpt', function(ctx: any, cm: boolean) {
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let tmp: any;
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if (cm) {
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query(0, Child, false, OtherChild);
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elementStart(1, 'div', null, [Child]);
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elementEnd();
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}
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queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
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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 predicate', () => {
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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('cmpt', function(ctx: any, cm: boolean) {
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let tmp: any;
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if (cm) {
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query(0, ['foo'], false, QUERY_READ_FROM_NODE);
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elToQuery = elementStart(1, 'div', null, null, ['foo', '']);
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elementEnd();
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elementStart(2, 'div');
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elementEnd();
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}
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queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
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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('cmpt', function(ctx: any, cm: boolean) {
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let tmp: any;
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if (cm) {
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query(0, ['foo'], false, QUERY_READ_FROM_NODE);
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query(1, ['bar'], false, QUERY_READ_FROM_NODE);
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elToQuery = elementStart(2, 'div', null, null, ['foo', '', 'bar', '']);
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elementEnd();
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elementStart(3, 'div');
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elementEnd();
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}
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queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.fooQuery = tmp as QueryList<any>);
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queryRefresh(tmp = load<QueryList<any>>(1)) && (ctx.barQuery = tmp as QueryList<any>);
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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('cmpt', function(ctx: any, cm: boolean) {
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let tmp: any;
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if (cm) {
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query(0, ['foo', 'bar'], undefined, QUERY_READ_FROM_NODE);
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el1ToQuery = elementStart(1, 'div', null, null, ['foo', '']);
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elementEnd();
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elementStart(2, 'div');
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elementEnd();
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el2ToQuery = elementStart(3, 'div', null, null, ['bar', '']);
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elementEnd();
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}
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queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
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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('cmpt', function(ctx: any, cm: boolean) {
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let tmp: any;
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if (cm) {
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query(0, ['foo'], false, QUERY_READ_ELEMENT_REF);
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elToQuery = elementStart(1, 'div', null, null, ['foo', '']);
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elementEnd();
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elementStart(2, 'div');
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elementEnd();
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}
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queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
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});
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const cmptInstance = renderComponent(Cmpt);
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const qList = (cmptInstance.query as QueryList<any>);
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expect(qList.length).toBe(1);
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expect(isElementRef(qList.first)).toBeTruthy();
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expect(qList.first.nativeElement).toEqual(elToQuery);
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});
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it('should read ViewContainerRef from element nodes when explicitly asked for', () => {
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/**
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* <div #foo></div>
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* class Cmpt {
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* @ViewChildren('foo', {read: ViewContainerRef}) query;
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* }
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*/
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const Cmpt = createComponent('cmpt', function(ctx: any, cm: boolean) {
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let tmp: any;
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if (cm) {
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query(0, ['foo'], false, QUERY_READ_CONTAINER_REF);
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elementStart(1, 'div', null, null, ['foo', '']);
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elementEnd();
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}
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queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
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});
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const cmptInstance = renderComponent(Cmpt);
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const qList = (cmptInstance.query as QueryList<any>);
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expect(qList.length).toBe(1);
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expect(isViewContainerRef(qList.first)).toBeTruthy();
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});
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it('should read ViewContainerRef from container nodes when explicitly asked for', () => {
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/**
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* <ng-template #foo></ng-template>
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* class Cmpt {
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* @ViewChildren('foo', {read: ViewContainerRef}) query;
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* }
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*/
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const Cmpt = createComponent('cmpt', function(ctx: any, cm: boolean) {
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let tmp: any;
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if (cm) {
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query(0, ['foo'], false, QUERY_READ_CONTAINER_REF);
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container(1, undefined, undefined, undefined, undefined, ['foo', '']);
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}
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queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
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});
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const cmptInstance = renderComponent(Cmpt);
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const qList = (cmptInstance.query as QueryList<any>);
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expect(qList.length).toBe(1);
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expect(isViewContainerRef(qList.first)).toBeTruthy();
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});
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it('should no longer read ElementRef with a native element pointing to comment DOM node from containers',
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() => {
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/**
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* <ng-template #foo></ng-template>
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* class Cmpt {
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* @ViewChildren('foo', {read: ElementRef}) query;
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* }
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*/
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const Cmpt = createComponent('cmpt', function(ctx: any, cm: boolean) {
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let tmp: any;
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if (cm) {
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query(0, ['foo'], false, QUERY_READ_ELEMENT_REF);
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container(1, undefined, undefined, undefined, undefined, ['foo', '']);
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}
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queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
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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).toBe(null);
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});
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it('should read TemplateRef from container nodes by default', () => {
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// http://plnkr.co/edit/BVpORly8wped9I3xUYsX?p=preview
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/**
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* <ng-template #foo></ng-template>
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* class Cmpt {
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* @ViewChildren('foo') query;
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* }
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*/
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const Cmpt = createComponent('cmpt', function(ctx: any, cm: boolean) {
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let tmp: any;
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if (cm) {
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query(0, ['foo'], undefined, QUERY_READ_FROM_NODE);
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container(1, undefined, undefined, undefined, undefined, ['foo', '']);
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}
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queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
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});
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const cmptInstance = renderComponent(Cmpt);
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const qList = (cmptInstance.query as QueryList<any>);
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expect(qList.length).toBe(1);
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expect(isTemplateRef(qList.first)).toBeTruthy();
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});
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it('should read TemplateRef from container nodes when explicitly asked for', () => {
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/**
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* <ng-template #foo></ng-template>
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* class Cmpt {
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* @ViewChildren('foo', {read: TemplateRef}) query;
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* }
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*/
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const Cmpt = createComponent('cmpt', function(ctx: any, cm: boolean) {
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let tmp: any;
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if (cm) {
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query(0, ['foo'], false, QUERY_READ_TEMPLATE_REF);
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container(1, undefined, undefined, undefined, undefined, ['foo', '']);
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}
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queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
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});
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const cmptInstance = renderComponent(Cmpt);
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const qList = (cmptInstance.query as QueryList<any>);
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expect(qList.length).toBe(1);
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expect(isTemplateRef(qList.first)).toBeTruthy();
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});
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it('should read component instance if element queried for is a component host', () => {
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const Child = createComponent('child', function(ctx: any, cm: boolean) {});
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let childInstance;
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/**
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* <child #foo></child>
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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('cmpt', function(ctx: any, cm: boolean) {
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let tmp: any;
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if (cm) {
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query(0, ['foo'], true, QUERY_READ_FROM_NODE);
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elementStart(1, Child, null, null, ['foo', '']);
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{ childInstance = loadDirective(0); }
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elementEnd();
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}
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queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
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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(childInstance);
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});
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it('should read component instance with explicit exportAs', () => {
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let childInstance: Child;
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class Child {
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static ngComponentDef = defineComponent({
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type: Child,
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tag: 'child',
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factory: () => childInstance = new Child(),
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template: (ctx: Child, cm: boolean) => {},
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exportAs: 'child'
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});
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}
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/**
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* <child #foo="child"></child>
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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('cmpt', function(ctx: any, cm: boolean) {
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let tmp: any;
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if (cm) {
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query(0, ['foo'], true, QUERY_READ_FROM_NODE);
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elementStart(1, Child, null, null, ['foo', 'child']);
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elementEnd();
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}
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queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
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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(childInstance !);
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});
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it('should read directive instance if element queried for has an exported directive with a matching name',
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() => {
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const Child = createDirective({exportAs: 'child'});
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let childInstance;
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/**
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* <div #foo="child" child></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('cmpt', function(ctx: any, cm: boolean) {
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let tmp: any;
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if (cm) {
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query(0, ['foo'], true, QUERY_READ_FROM_NODE);
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elementStart(1, 'div', null, [Child], ['foo', 'child']);
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childInstance = loadDirective(0);
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elementEnd();
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}
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queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
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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(childInstance);
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});
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it('should read all matching directive instances from a given element', () => {
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const Child1 = createDirective({exportAs: 'child1'});
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const Child2 = createDirective({exportAs: 'child2'});
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|
|
let child1Instance, child2Instance;
|
|
/**
|
|
* <div #foo="child1" child1 #bar="child2" child2></div>
|
|
* class Cmpt {
|
|
* @ViewChildren('foo, bar') query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent('cmpt', function(ctx: any, cm: boolean) {
|
|
let tmp: any;
|
|
if (cm) {
|
|
query(0, ['foo', 'bar'], true, QUERY_READ_FROM_NODE);
|
|
elementStart(1, 'div', null, [Child1, Child2], ['foo', 'child1', 'bar', 'child2']);
|
|
{
|
|
child1Instance = loadDirective(0);
|
|
child2Instance = loadDirective(1);
|
|
}
|
|
elementEnd();
|
|
}
|
|
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({exportAs: 'child'});
|
|
let childInstance;
|
|
|
|
/**
|
|
* <div child #foo="child" #bar="child"></div>
|
|
* class Cmpt {
|
|
* @ViewChildren('foo') fooQuery;
|
|
* @ViewChildren('bar') barQuery;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent('cmpt', function(ctx: any, cm: boolean) {
|
|
let tmp: any;
|
|
if (cm) {
|
|
query(0, ['foo'], true, QUERY_READ_FROM_NODE);
|
|
query(1, ['bar'], true, QUERY_READ_FROM_NODE);
|
|
elementStart(2, 'div', null, [Child], ['foo', 'child', 'bar', 'child']);
|
|
{ childInstance = loadDirective(0); }
|
|
elementEnd();
|
|
}
|
|
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({exportAs: 'child'});
|
|
|
|
let div;
|
|
/**
|
|
* <div #foo="child" child></div>
|
|
* class Cmpt {
|
|
* @ViewChildren('foo', {read: ElementRef}) query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent('cmpt', function(ctx: any, cm: boolean) {
|
|
let tmp: any;
|
|
if (cm) {
|
|
query(0, ['foo'], undefined, QUERY_READ_ELEMENT_REF);
|
|
div = elementStart(1, 'div', null, [Child], ['foo', 'child']);
|
|
elementEnd();
|
|
}
|
|
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({exportAs: 'child'});
|
|
|
|
let childInstance, div;
|
|
/**
|
|
* <div #foo #bar="child" child></div>
|
|
* class Cmpt {
|
|
* @ViewChildren('foo, bar') query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent('cmpt', function(ctx: any, cm: boolean) {
|
|
let tmp: any;
|
|
if (cm) {
|
|
query(0, ['foo', 'bar'], undefined, QUERY_READ_FROM_NODE);
|
|
div = elementStart(1, 'div', null, [Child], ['foo', '', 'bar', 'child']);
|
|
{ childInstance = loadDirective(0); }
|
|
elementEnd();
|
|
}
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
|
|
});
|
|
|
|
const cmptInstance = renderComponent(Cmpt);
|
|
const qList = (cmptInstance.query as QueryList<any>);
|
|
expect(qList.length).toBe(2);
|
|
expect(qList.first.nativeElement).toBe(div);
|
|
expect(qList.last).toBe(childInstance);
|
|
});
|
|
|
|
it('should not add results to query if a requested token cant be read', () => {
|
|
const Child = createDirective();
|
|
|
|
/**
|
|
* <div #foo></div>
|
|
* class Cmpt {
|
|
* @ViewChildren('foo', {read: Child}) query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent('cmpt', function(ctx: any, cm: boolean) {
|
|
let tmp: any;
|
|
if (cm) {
|
|
query(0, ['foo'], false, Child);
|
|
elementStart(1, 'div', null, null, ['foo', '']);
|
|
elementEnd();
|
|
}
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.query = tmp as QueryList<any>);
|
|
});
|
|
|
|
const cmptInstance = renderComponent(Cmpt);
|
|
const qList = (cmptInstance.query as QueryList<any>);
|
|
expect(qList.length).toBe(0);
|
|
});
|
|
|
|
});
|
|
|
|
describe('view boundaries', () => {
|
|
|
|
it('should report results in embedded views', () => {
|
|
let firstEl;
|
|
/**
|
|
* <ng-template [ngIf]="exp">
|
|
* <div #foo></div>
|
|
* </ng-template>
|
|
* class Cmpt {
|
|
* @ViewChildren('foo') query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent('cmpt', function(ctx: any, cm: boolean) {
|
|
let tmp: any;
|
|
if (cm) {
|
|
query(0, ['foo'], true, QUERY_READ_FROM_NODE);
|
|
container(1);
|
|
}
|
|
containerRefreshStart(1);
|
|
{
|
|
if (ctx.exp) {
|
|
let cm1 = embeddedViewStart(1);
|
|
{
|
|
if (cm1) {
|
|
firstEl = elementStart(0, 'div', null, null, ['foo', '']);
|
|
elementEnd();
|
|
}
|
|
}
|
|
embeddedViewEnd();
|
|
}
|
|
}
|
|
containerRefreshEnd();
|
|
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>
|
|
* <ng-template [ngIf]="exp">
|
|
* <div #foo></div>
|
|
* </ng-template>
|
|
* <span #foo></span>
|
|
* class Cmpt {
|
|
* @ViewChildren('foo') query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent('cmpt', function(ctx: any, cm: boolean) {
|
|
let tmp: any;
|
|
if (cm) {
|
|
query(0, ['foo'], true, QUERY_READ_FROM_NODE);
|
|
firstEl = elementStart(1, 'b', null, null, ['foo', '']);
|
|
elementEnd();
|
|
container(2);
|
|
lastEl = elementStart(3, 'i', null, null, ['foo', '']);
|
|
elementEnd();
|
|
}
|
|
containerRefreshStart(2);
|
|
{
|
|
if (ctx.exp) {
|
|
let cm1 = embeddedViewStart(1);
|
|
{
|
|
if (cm1) {
|
|
viewEl = elementStart(0, 'div', null, null, ['foo', '']);
|
|
elementEnd();
|
|
}
|
|
}
|
|
embeddedViewEnd();
|
|
}
|
|
}
|
|
containerRefreshEnd();
|
|
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;
|
|
/**
|
|
* <ng-template [ngIf]="exp1">
|
|
* <div #foo></div>
|
|
* </ng-template>
|
|
* <ng-template [ngIf]="exp2">
|
|
* <span #foo></span>
|
|
* </ng-template>
|
|
* class Cmpt {
|
|
* @ViewChildren('foo') query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent('cmpt', function(ctx: any, cm: boolean) {
|
|
let tmp: any;
|
|
if (cm) {
|
|
query(0, ['foo'], true, QUERY_READ_FROM_NODE);
|
|
container(1);
|
|
}
|
|
containerRefreshStart(1);
|
|
{
|
|
if (ctx.exp1) {
|
|
let cm1 = embeddedViewStart(0);
|
|
{
|
|
if (cm1) {
|
|
firstEl = elementStart(0, 'div', null, null, ['foo', '']);
|
|
elementEnd();
|
|
}
|
|
}
|
|
embeddedViewEnd();
|
|
}
|
|
if (ctx.exp2) {
|
|
let cm1 = embeddedViewStart(1);
|
|
{
|
|
if (cm1) {
|
|
lastEl = elementStart(0, 'span', null, null, ['foo', '']);
|
|
elementEnd();
|
|
}
|
|
}
|
|
embeddedViewEnd();
|
|
}
|
|
}
|
|
containerRefreshEnd();
|
|
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;
|
|
/**
|
|
* <ng-template [ngIf]="exp1">
|
|
* <div #foo></div>
|
|
* <ng-template [ngIf]="exp2">
|
|
* <span #foo></span>
|
|
* </ng-template>
|
|
* </ng-template>
|
|
* class Cmpt {
|
|
* @ViewChildren('foo') query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent('cmpt', function(ctx: any, cm: boolean) {
|
|
let tmp: any;
|
|
if (cm) {
|
|
query(0, ['foo'], true, QUERY_READ_FROM_NODE);
|
|
container(1);
|
|
}
|
|
containerRefreshStart(1);
|
|
{
|
|
if (ctx.exp1) {
|
|
let cm1 = embeddedViewStart(0);
|
|
{
|
|
if (cm1) {
|
|
firstEl = elementStart(0, 'div', null, null, ['foo', '']);
|
|
elementEnd();
|
|
container(1);
|
|
}
|
|
containerRefreshStart(1);
|
|
{
|
|
if (ctx.exp2) {
|
|
let cm2 = embeddedViewStart(0);
|
|
{
|
|
if (cm2) {
|
|
lastEl = elementStart(0, 'span', null, null, ['foo', '']);
|
|
elementEnd();
|
|
}
|
|
}
|
|
embeddedViewEnd();
|
|
}
|
|
}
|
|
containerRefreshEnd();
|
|
}
|
|
embeddedViewEnd();
|
|
}
|
|
}
|
|
containerRefreshEnd();
|
|
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);
|
|
});
|
|
|
|
it('should support combination of deep and shallow queries', () => {
|
|
/**
|
|
* <ng-template [ngIf]="exp">
|
|
* <div #foo></div>
|
|
* </ng-template>
|
|
* <span #foo></span>
|
|
* class Cmpt {
|
|
* @ViewChildren('foo') query;
|
|
* }
|
|
*/
|
|
const Cmpt = createComponent('cmpt', function(ctx: any, cm: boolean) {
|
|
let tmp: any;
|
|
if (cm) {
|
|
query(0, ['foo'], true, QUERY_READ_FROM_NODE);
|
|
query(1, ['foo'], false, QUERY_READ_FROM_NODE);
|
|
container(2);
|
|
elementStart(3, 'span', null, null, ['foo', '']);
|
|
elementEnd();
|
|
}
|
|
containerRefreshStart(2);
|
|
{
|
|
if (ctx.exp) {
|
|
let cm1 = embeddedViewStart(0);
|
|
{
|
|
if (cm1) {
|
|
elementStart(0, 'div', null, null, ['foo', '']);
|
|
elementEnd();
|
|
}
|
|
}
|
|
embeddedViewEnd();
|
|
}
|
|
}
|
|
containerRefreshEnd();
|
|
queryRefresh(tmp = load<QueryList<any>>(0)) && (ctx.deep = tmp as QueryList<any>);
|
|
queryRefresh(tmp = load<QueryList<any>>(1)) && (ctx.shallow = tmp as QueryList<any>);
|
|
});
|
|
|
|
const cmptInstance = renderComponent(Cmpt);
|
|
const deep = (cmptInstance.deep as any);
|
|
const shallow = (cmptInstance.shallow as any);
|
|
expect(deep.length).toBe(1);
|
|
expect(shallow.length).toBe(1);
|
|
|
|
|
|
cmptInstance.exp = true;
|
|
detectChanges(cmptInstance);
|
|
expect(deep.length).toBe(2);
|
|
expect(shallow.length).toBe(1);
|
|
|
|
cmptInstance.exp = false;
|
|
detectChanges(cmptInstance);
|
|
expect(deep.length).toBe(1);
|
|
expect(shallow.length).toBe(1);
|
|
});
|
|
|
|
});
|
|
|
|
describe('observable interface', () => {
|
|
|
|
it('should allow observing changes to query list', () => {
|
|
const queryList = new QueryList();
|
|
let changes = 0;
|
|
|
|
queryList.changes.subscribe({
|
|
next: (arg) => {
|
|
changes += 1;
|
|
expect(arg).toBe(queryList);
|
|
}
|
|
});
|
|
|
|
// initial refresh, the query should be dirty
|
|
queryRefresh(queryList);
|
|
expect(changes).toBe(1);
|
|
|
|
|
|
// refresh without setting dirty - no emit
|
|
queryRefresh(queryList);
|
|
expect(changes).toBe(1);
|
|
|
|
// refresh with setting dirty - emit
|
|
queryList.setDirty();
|
|
queryRefresh(queryList);
|
|
expect(changes).toBe(2);
|
|
});
|
|
|
|
});
|
|
});
|