567 lines
22 KiB
TypeScript
567 lines
22 KiB
TypeScript
/**
|
|
* @license
|
|
* Copyright Google Inc. All Rights Reserved.
|
|
*
|
|
* Use of this source code is governed by an MIT-style license that can be
|
|
* found in the LICENSE file at https://angular.io/license
|
|
*/
|
|
|
|
import {Component, ContentChild, ContentChildren, Directive, ElementRef, Input, QueryList, TemplateRef, Type, ViewChild, ViewChildren} from '@angular/core';
|
|
import {TestBed} from '@angular/core/testing';
|
|
import {expect} from '@angular/platform-browser/testing/src/matchers';
|
|
import {onlyInIvy} from '@angular/private/testing';
|
|
|
|
describe('query logic', () => {
|
|
beforeEach(() => {
|
|
TestBed.configureTestingModule({
|
|
declarations: [
|
|
AppComp, QueryComp, SimpleCompA, SimpleCompB, StaticViewQueryComp, TextDirective,
|
|
SubclassStaticViewQueryComp, StaticContentQueryComp, SubclassStaticContentQueryComp,
|
|
QueryCompWithChanges, StaticContentQueryDir
|
|
]
|
|
});
|
|
});
|
|
|
|
describe('view queries', () => {
|
|
it('should return Component instances when Components are labeled and retrieved', () => {
|
|
const template = `
|
|
<div><simple-comp-a #viewQuery></simple-comp-a></div>
|
|
<div><simple-comp-b #viewQuery></simple-comp-b></div>
|
|
`;
|
|
const fixture = initWithTemplate(QueryComp, template);
|
|
const comp = fixture.componentInstance;
|
|
expect(comp.viewChild).toBeAnInstanceOf(SimpleCompA);
|
|
expect(comp.viewChildren.first).toBeAnInstanceOf(SimpleCompA);
|
|
expect(comp.viewChildren.last).toBeAnInstanceOf(SimpleCompB);
|
|
});
|
|
|
|
it('should return ElementRef when HTML element is labeled and retrieved', () => {
|
|
const template = `
|
|
<div #viewQuery></div>
|
|
`;
|
|
const fixture = initWithTemplate(QueryComp, template);
|
|
const comp = fixture.componentInstance;
|
|
expect(comp.viewChild).toBeAnInstanceOf(ElementRef);
|
|
expect(comp.viewChildren.first).toBeAnInstanceOf(ElementRef);
|
|
});
|
|
|
|
onlyInIvy('multiple local refs are supported in Ivy')
|
|
.it('should return ElementRefs when HTML elements are labeled and retrieved', () => {
|
|
const template = `
|
|
<div #viewQuery #first>A</div>
|
|
<div #viewQuery #second>B</div>
|
|
`;
|
|
const fixture = initWithTemplate(QueryComp, template);
|
|
const comp = fixture.componentInstance;
|
|
|
|
expect(comp.viewChild).toBeAnInstanceOf(ElementRef);
|
|
expect(comp.viewChild.nativeElement).toBe(fixture.debugElement.children[0].nativeElement);
|
|
|
|
expect(comp.viewChildren.first).toBeAnInstanceOf(ElementRef);
|
|
expect(comp.viewChildren.last).toBeAnInstanceOf(ElementRef);
|
|
expect(comp.viewChildren.length).toBe(2);
|
|
});
|
|
|
|
it('should return TemplateRef when template is labeled and retrieved', () => {
|
|
const template = `
|
|
<ng-template #viewQuery></ng-template>
|
|
`;
|
|
const fixture = initWithTemplate(QueryComp, template);
|
|
const comp = fixture.componentInstance;
|
|
expect(comp.viewChildren.first).toBeAnInstanceOf(TemplateRef);
|
|
});
|
|
|
|
onlyInIvy('multiple local refs are supported in Ivy')
|
|
.it('should return TemplateRefs when templates are labeled and retrieved', () => {
|
|
const template = `
|
|
<ng-template #viewQuery></ng-template>
|
|
<ng-template #viewQuery></ng-template>
|
|
`;
|
|
const fixture = initWithTemplate(QueryComp, template);
|
|
const comp = fixture.componentInstance;
|
|
expect(comp.viewChild).toBeAnInstanceOf(TemplateRef);
|
|
expect(comp.viewChild.elementRef.nativeElement)
|
|
.toBe(fixture.debugElement.childNodes[0].nativeNode);
|
|
|
|
expect(comp.viewChildren.first).toBeAnInstanceOf(TemplateRef);
|
|
expect(comp.viewChildren.last).toBeAnInstanceOf(TemplateRef);
|
|
expect(comp.viewChildren.length).toBe(2);
|
|
});
|
|
|
|
it('should set static view child queries in creation mode (and just in creation mode)', () => {
|
|
const fixture = TestBed.createComponent(StaticViewQueryComp);
|
|
const component = fixture.componentInstance;
|
|
|
|
// static ViewChild query should be set in creation mode, before CD runs
|
|
expect(component.textDir).toBeAnInstanceOf(TextDirective);
|
|
expect(component.textDir.text).toEqual('');
|
|
expect(component.setEvents).toEqual(['textDir set']);
|
|
|
|
// dynamic ViewChild query should not have been resolved yet
|
|
expect(component.foo).not.toBeDefined();
|
|
|
|
const span = fixture.nativeElement.querySelector('span');
|
|
fixture.detectChanges();
|
|
expect(component.textDir.text).toEqual('some text');
|
|
expect(component.foo.nativeElement).toBe(span);
|
|
expect(component.setEvents).toEqual(['textDir set', 'foo set']);
|
|
});
|
|
|
|
it('should support static view child queries inherited from superclasses', () => {
|
|
const fixture = TestBed.createComponent(SubclassStaticViewQueryComp);
|
|
const component = fixture.componentInstance;
|
|
const divs = fixture.nativeElement.querySelectorAll('div');
|
|
const spans = fixture.nativeElement.querySelectorAll('span');
|
|
|
|
// static ViewChild queries should be set in creation mode, before CD runs
|
|
expect(component.textDir).toBeAnInstanceOf(TextDirective);
|
|
expect(component.textDir.text).toEqual('');
|
|
expect(component.bar.nativeElement).toEqual(divs[1]);
|
|
|
|
// dynamic ViewChild queries should not have been resolved yet
|
|
expect(component.foo).not.toBeDefined();
|
|
expect(component.baz).not.toBeDefined();
|
|
|
|
fixture.detectChanges();
|
|
expect(component.textDir.text).toEqual('some text');
|
|
expect(component.foo.nativeElement).toBe(spans[0]);
|
|
expect(component.baz.nativeElement).toBe(spans[1]);
|
|
});
|
|
|
|
it('should support multiple static view queries (multiple template passes)', () => {
|
|
const template = `
|
|
<static-view-query-comp></static-view-query-comp>
|
|
<static-view-query-comp></static-view-query-comp>
|
|
`;
|
|
TestBed.overrideComponent(AppComp, {set: new Component({template})});
|
|
const fixture = TestBed.createComponent(AppComp);
|
|
|
|
const firstComponent = fixture.debugElement.children[0].injector.get(StaticViewQueryComp);
|
|
const secondComponent = fixture.debugElement.children[1].injector.get(StaticViewQueryComp);
|
|
|
|
// static ViewChild query should be set in creation mode, before CD runs
|
|
expect(firstComponent.textDir).toBeAnInstanceOf(TextDirective);
|
|
expect(secondComponent.textDir).toBeAnInstanceOf(TextDirective);
|
|
expect(firstComponent.textDir.text).toEqual('');
|
|
expect(secondComponent.textDir.text).toEqual('');
|
|
expect(firstComponent.setEvents).toEqual(['textDir set']);
|
|
expect(secondComponent.setEvents).toEqual(['textDir set']);
|
|
|
|
// dynamic ViewChild query should not have been resolved yet
|
|
expect(firstComponent.foo).not.toBeDefined();
|
|
expect(secondComponent.foo).not.toBeDefined();
|
|
|
|
const spans = fixture.nativeElement.querySelectorAll('span');
|
|
fixture.detectChanges();
|
|
expect(firstComponent.textDir.text).toEqual('some text');
|
|
expect(secondComponent.textDir.text).toEqual('some text');
|
|
expect(firstComponent.foo.nativeElement).toBe(spans[0]);
|
|
expect(secondComponent.foo.nativeElement).toBe(spans[1]);
|
|
expect(firstComponent.setEvents).toEqual(['textDir set', 'foo set']);
|
|
expect(secondComponent.setEvents).toEqual(['textDir set', 'foo set']);
|
|
});
|
|
|
|
});
|
|
|
|
describe('content queries', () => {
|
|
it('should return Component instance when Component is labeled and retrieved', () => {
|
|
const template = `
|
|
<local-ref-query-component #q>
|
|
<simple-comp-a #contentQuery></simple-comp-a>
|
|
</local-ref-query-component>
|
|
`;
|
|
const fixture = initWithTemplate(AppComp, template);
|
|
const comp = fixture.debugElement.children[0].references['q'];
|
|
expect(comp.contentChild).toBeAnInstanceOf(SimpleCompA);
|
|
expect(comp.contentChildren.first).toBeAnInstanceOf(SimpleCompA);
|
|
});
|
|
|
|
onlyInIvy('multiple local refs are supported in Ivy')
|
|
.it('should return Component instances when Components are labeled and retrieved', () => {
|
|
const template = `
|
|
<local-ref-query-component #q>
|
|
<simple-comp-a #contentQuery></simple-comp-a>
|
|
<simple-comp-b #contentQuery></simple-comp-b>
|
|
</local-ref-query-component>
|
|
`;
|
|
const fixture = initWithTemplate(AppComp, template);
|
|
const comp = fixture.debugElement.children[0].references['q'];
|
|
expect(comp.contentChild).toBeAnInstanceOf(SimpleCompA);
|
|
expect(comp.contentChildren.first).toBeAnInstanceOf(SimpleCompA);
|
|
expect(comp.contentChildren.last).toBeAnInstanceOf(SimpleCompB);
|
|
expect(comp.contentChildren.length).toBe(2);
|
|
});
|
|
|
|
|
|
it('should return ElementRef when HTML element is labeled and retrieved', () => {
|
|
const template = `
|
|
<local-ref-query-component #q>
|
|
<div #contentQuery></div>
|
|
</local-ref-query-component>
|
|
`;
|
|
const fixture = initWithTemplate(AppComp, template);
|
|
const comp = fixture.debugElement.children[0].references['q'];
|
|
expect(comp.contentChildren.first).toBeAnInstanceOf(ElementRef);
|
|
});
|
|
|
|
onlyInIvy('multiple local refs are supported in Ivy')
|
|
.it('should return ElementRefs when HTML elements are labeled and retrieved', () => {
|
|
const template = `
|
|
<local-ref-query-component #q>
|
|
<div #contentQuery></div>
|
|
<div #contentQuery></div>
|
|
</local-ref-query-component>
|
|
`;
|
|
const fixture = initWithTemplate(AppComp, template);
|
|
const firstChild = fixture.debugElement.children[0];
|
|
const comp = firstChild.references['q'];
|
|
|
|
expect(comp.contentChild).toBeAnInstanceOf(ElementRef);
|
|
expect(comp.contentChild.nativeElement).toBe(firstChild.children[0].nativeElement);
|
|
|
|
expect(comp.contentChildren.first).toBeAnInstanceOf(ElementRef);
|
|
expect(comp.contentChildren.last).toBeAnInstanceOf(ElementRef);
|
|
expect(comp.contentChildren.length).toBe(2);
|
|
});
|
|
|
|
it('should return TemplateRef when template is labeled and retrieved', () => {
|
|
const template = `
|
|
<local-ref-query-component #q>
|
|
<ng-template #contentQuery></ng-template>
|
|
</local-ref-query-component>
|
|
`;
|
|
const fixture = initWithTemplate(AppComp, template);
|
|
const comp = fixture.debugElement.children[0].references['q'];
|
|
expect(comp.contentChildren.first).toBeAnInstanceOf(TemplateRef);
|
|
});
|
|
|
|
onlyInIvy('multiple local refs are supported in Ivy')
|
|
.it('should return TemplateRefs when templates are labeled and retrieved', () => {
|
|
const template = `
|
|
<local-ref-query-component #q>
|
|
<ng-template #contentQuery></ng-template>
|
|
<ng-template #contentQuery></ng-template>
|
|
</local-ref-query-component>
|
|
`;
|
|
const fixture = initWithTemplate(AppComp, template);
|
|
const firstChild = fixture.debugElement.children[0];
|
|
const comp = firstChild.references['q'];
|
|
|
|
expect(comp.contentChild).toBeAnInstanceOf(TemplateRef);
|
|
expect(comp.contentChild.elementRef.nativeElement)
|
|
.toBe(firstChild.childNodes[0].nativeNode);
|
|
|
|
expect(comp.contentChildren.first).toBeAnInstanceOf(TemplateRef);
|
|
expect(comp.contentChildren.last).toBeAnInstanceOf(TemplateRef);
|
|
expect(comp.contentChildren.length).toBe(2);
|
|
});
|
|
|
|
it('should set static content child queries in creation mode (and just in creation mode)',
|
|
() => {
|
|
const template = `
|
|
<static-content-query-comp>
|
|
<div [text]="text"></div>
|
|
<span #foo></span>
|
|
</static-content-query-comp>
|
|
`;
|
|
TestBed.overrideComponent(AppComp, {set: new Component({template})});
|
|
const fixture = TestBed.createComponent(AppComp);
|
|
const component = fixture.debugElement.children[0].injector.get(StaticContentQueryComp);
|
|
|
|
// static ContentChild query should be set in creation mode, before CD runs
|
|
expect(component.textDir).toBeAnInstanceOf(TextDirective);
|
|
expect(component.textDir.text).toEqual('');
|
|
expect(component.setEvents).toEqual(['textDir set']);
|
|
|
|
// dynamic ContentChild query should not have been resolved yet
|
|
expect(component.foo).not.toBeDefined();
|
|
|
|
const span = fixture.nativeElement.querySelector('span');
|
|
(fixture.componentInstance as any).text = 'some text';
|
|
fixture.detectChanges();
|
|
|
|
expect(component.textDir.text).toEqual('some text');
|
|
expect(component.foo.nativeElement).toBe(span);
|
|
expect(component.setEvents).toEqual(['textDir set', 'foo set']);
|
|
});
|
|
|
|
it('should support static content child queries inherited from superclasses', () => {
|
|
const template = `
|
|
<subclass-static-content-query-comp>
|
|
<div [text]="text"></div>
|
|
<span #foo></span>
|
|
<div #bar></div>
|
|
<span #baz></span>
|
|
</subclass-static-content-query-comp>
|
|
`;
|
|
TestBed.overrideComponent(AppComp, {set: new Component({template})});
|
|
const fixture = TestBed.createComponent(AppComp);
|
|
const component =
|
|
fixture.debugElement.children[0].injector.get(SubclassStaticContentQueryComp);
|
|
const divs = fixture.nativeElement.querySelectorAll('div');
|
|
const spans = fixture.nativeElement.querySelectorAll('span');
|
|
|
|
// static ContentChild queries should be set in creation mode, before CD runs
|
|
expect(component.textDir).toBeAnInstanceOf(TextDirective);
|
|
expect(component.textDir.text).toEqual('');
|
|
expect(component.bar.nativeElement).toEqual(divs[1]);
|
|
|
|
// dynamic ContentChild queries should not have been resolved yet
|
|
expect(component.foo).not.toBeDefined();
|
|
expect(component.baz).not.toBeDefined();
|
|
|
|
(fixture.componentInstance as any).text = 'some text';
|
|
fixture.detectChanges();
|
|
expect(component.textDir.text).toEqual('some text');
|
|
expect(component.foo.nativeElement).toBe(spans[0]);
|
|
expect(component.baz.nativeElement).toBe(spans[1]);
|
|
});
|
|
|
|
it('should set static content child queries on directives', () => {
|
|
const template = `
|
|
<div staticContentQueryDir>
|
|
<div [text]="text"></div>
|
|
<span #foo></span>
|
|
</div>
|
|
`;
|
|
TestBed.overrideComponent(AppComp, {set: new Component({template})});
|
|
const fixture = TestBed.createComponent(AppComp);
|
|
const component = fixture.debugElement.children[0].injector.get(StaticContentQueryDir);
|
|
|
|
// static ContentChild query should be set in creation mode, before CD runs
|
|
expect(component.textDir).toBeAnInstanceOf(TextDirective);
|
|
expect(component.textDir.text).toEqual('');
|
|
expect(component.setEvents).toEqual(['textDir set']);
|
|
|
|
// dynamic ContentChild query should not have been resolved yet
|
|
expect(component.foo).not.toBeDefined();
|
|
|
|
const span = fixture.nativeElement.querySelector('span');
|
|
(fixture.componentInstance as any).text = 'some text';
|
|
fixture.detectChanges();
|
|
|
|
expect(component.textDir.text).toEqual('some text');
|
|
expect(component.foo.nativeElement).toBe(span);
|
|
expect(component.setEvents).toEqual(['textDir set', 'foo set']);
|
|
});
|
|
|
|
it('should support multiple content query components (multiple template passes)', () => {
|
|
const template = `
|
|
<static-content-query-comp>
|
|
<div [text]="text"></div>
|
|
<span #foo></span>
|
|
</static-content-query-comp>
|
|
<static-content-query-comp>
|
|
<div [text]="text"></div>
|
|
<span #foo></span>
|
|
</static-content-query-comp>
|
|
`;
|
|
TestBed.overrideComponent(AppComp, {set: new Component({template})});
|
|
const fixture = TestBed.createComponent(AppComp);
|
|
const firstComponent = fixture.debugElement.children[0].injector.get(StaticContentQueryComp);
|
|
const secondComponent = fixture.debugElement.children[1].injector.get(StaticContentQueryComp);
|
|
|
|
// static ContentChild query should be set in creation mode, before CD runs
|
|
expect(firstComponent.textDir).toBeAnInstanceOf(TextDirective);
|
|
expect(secondComponent.textDir).toBeAnInstanceOf(TextDirective);
|
|
expect(firstComponent.textDir.text).toEqual('');
|
|
expect(secondComponent.textDir.text).toEqual('');
|
|
expect(firstComponent.setEvents).toEqual(['textDir set']);
|
|
expect(secondComponent.setEvents).toEqual(['textDir set']);
|
|
|
|
// dynamic ContentChild query should not have been resolved yet
|
|
expect(firstComponent.foo).not.toBeDefined();
|
|
expect(secondComponent.foo).not.toBeDefined();
|
|
|
|
const spans = fixture.nativeElement.querySelectorAll('span');
|
|
(fixture.componentInstance as any).text = 'some text';
|
|
fixture.detectChanges();
|
|
|
|
expect(firstComponent.textDir.text).toEqual('some text');
|
|
expect(secondComponent.textDir.text).toEqual('some text');
|
|
|
|
expect(firstComponent.foo.nativeElement).toBe(spans[0]);
|
|
expect(secondComponent.foo.nativeElement).toBe(spans[1]);
|
|
|
|
expect(firstComponent.setEvents).toEqual(['textDir set', 'foo set']);
|
|
expect(secondComponent.setEvents).toEqual(['textDir set', 'foo set']);
|
|
});
|
|
|
|
});
|
|
|
|
describe('observable interface', () => {
|
|
|
|
it('should allow observing changes to query list', () => {
|
|
const fixture = TestBed.createComponent(QueryCompWithChanges);
|
|
let changes = 0;
|
|
fixture.detectChanges();
|
|
|
|
fixture.componentInstance.foos.changes.subscribe((value: any) => {
|
|
changes += 1;
|
|
expect(value).toBe(fixture.componentInstance.foos);
|
|
});
|
|
|
|
// refresh without setting dirty - no emit
|
|
fixture.detectChanges();
|
|
expect(changes).toBe(0);
|
|
|
|
// refresh with setting dirty - emit
|
|
fixture.componentInstance.showing = true;
|
|
fixture.detectChanges();
|
|
expect(changes).toBe(1);
|
|
});
|
|
|
|
});
|
|
|
|
});
|
|
|
|
function initWithTemplate(compType: Type<any>, template: string) {
|
|
TestBed.overrideComponent(compType, {set: new Component({template})});
|
|
const fixture = TestBed.createComponent(compType);
|
|
fixture.detectChanges();
|
|
return fixture;
|
|
}
|
|
|
|
@Component({selector: 'local-ref-query-component', template: '<ng-content></ng-content>'})
|
|
class QueryComp {
|
|
@ViewChild('viewQuery') viewChild !: any;
|
|
@ContentChild('contentQuery') contentChild !: any;
|
|
|
|
@ViewChildren('viewQuery') viewChildren !: QueryList<any>;
|
|
@ContentChildren('contentQuery') contentChildren !: QueryList<any>;
|
|
}
|
|
|
|
@Component({selector: 'app-comp', template: ``})
|
|
class AppComp {
|
|
}
|
|
|
|
@Component({selector: 'simple-comp-a', template: ''})
|
|
class SimpleCompA {
|
|
}
|
|
|
|
@Component({selector: 'simple-comp-b', template: ''})
|
|
class SimpleCompB {
|
|
}
|
|
|
|
@Directive({selector: '[text]'})
|
|
class TextDirective {
|
|
@Input() text = '';
|
|
}
|
|
|
|
@Component({
|
|
selector: 'static-view-query-comp',
|
|
template: `
|
|
<div [text]="text"></div>
|
|
<span #foo></span>
|
|
`
|
|
})
|
|
class StaticViewQueryComp {
|
|
private _textDir !: TextDirective;
|
|
private _foo !: ElementRef;
|
|
setEvents: string[] = [];
|
|
|
|
@ViewChild(TextDirective, {static: true})
|
|
get textDir(): TextDirective { return this._textDir; }
|
|
|
|
set textDir(value: TextDirective) {
|
|
this.setEvents.push('textDir set');
|
|
this._textDir = value;
|
|
}
|
|
|
|
@ViewChild('foo', {static: false})
|
|
get foo(): ElementRef { return this._foo; }
|
|
|
|
set foo(value: ElementRef) {
|
|
this.setEvents.push('foo set');
|
|
this._foo = value;
|
|
}
|
|
|
|
text = 'some text';
|
|
}
|
|
|
|
@Component({
|
|
selector: 'subclass-static-view-query-comp',
|
|
template: `
|
|
<div [text]="text"></div>
|
|
<span #foo></span>
|
|
|
|
<div #bar></div>
|
|
<span #baz></span>
|
|
`
|
|
})
|
|
class SubclassStaticViewQueryComp extends StaticViewQueryComp {
|
|
@ViewChild('bar', {static: true})
|
|
bar !: ElementRef;
|
|
|
|
@ViewChild('baz', {static: false})
|
|
baz !: ElementRef;
|
|
}
|
|
|
|
|
|
@Component({selector: 'static-content-query-comp', template: `<ng-content></ng-content>`})
|
|
class StaticContentQueryComp {
|
|
private _textDir !: TextDirective;
|
|
private _foo !: ElementRef;
|
|
setEvents: string[] = [];
|
|
|
|
@ContentChild(TextDirective, {static: true})
|
|
get textDir(): TextDirective { return this._textDir; }
|
|
|
|
set textDir(value: TextDirective) {
|
|
this.setEvents.push('textDir set');
|
|
this._textDir = value;
|
|
}
|
|
|
|
@ContentChild('foo', {static: false})
|
|
get foo(): ElementRef { return this._foo; }
|
|
|
|
set foo(value: ElementRef) {
|
|
this.setEvents.push('foo set');
|
|
this._foo = value;
|
|
}
|
|
}
|
|
|
|
@Directive({selector: '[staticContentQueryDir]'})
|
|
class StaticContentQueryDir {
|
|
private _textDir !: TextDirective;
|
|
private _foo !: ElementRef;
|
|
setEvents: string[] = [];
|
|
|
|
@ContentChild(TextDirective, {static: true})
|
|
get textDir(): TextDirective { return this._textDir; }
|
|
|
|
set textDir(value: TextDirective) {
|
|
this.setEvents.push('textDir set');
|
|
this._textDir = value;
|
|
}
|
|
|
|
@ContentChild('foo', {static: false})
|
|
get foo(): ElementRef { return this._foo; }
|
|
|
|
set foo(value: ElementRef) {
|
|
this.setEvents.push('foo set');
|
|
this._foo = value;
|
|
}
|
|
}
|
|
|
|
@Component({selector: 'subclass-static-content-query-comp', template: `<ng-content></ng-content>`})
|
|
class SubclassStaticContentQueryComp extends StaticContentQueryComp {
|
|
@ContentChild('bar', {static: true})
|
|
bar !: ElementRef;
|
|
|
|
@ContentChild('baz', {static: false})
|
|
baz !: ElementRef;
|
|
}
|
|
|
|
@Component({
|
|
selector: 'query-with-changes',
|
|
template: `
|
|
<div *ngIf="showing" #foo></div>
|
|
`
|
|
})
|
|
export class QueryCompWithChanges {
|
|
@ViewChildren('foo') foos !: QueryList<any>;
|
|
|
|
showing = false;
|
|
}
|