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/*!
* @license
* Copyright Google LLC 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.dev/license
*/
import {DOCUMENT, isPlatformBrowser} from '@angular/common';
import {Component, inject, NgZone, OnInit, PLATFORM_ID, signal, WritableSignal} from '@angular/core';
import {NavigationEnd, NavigationSkipped, Router, RouterLink, RouterOutlet} from '@angular/router';
import {filter, map, skip} from 'rxjs/operators';
import {
CookiePopup,
getActivatedRouteSnapshotFromRouter,
IS_SEARCH_DIALOG_OPEN,
SearchDialog,
WINDOW,
} from '@angular/docs';
import {Footer} from './core/layout/footer/footer.component';
import {Navigation} from './core/layout/navigation/navigation.component';
import {SecondaryNavigation} from './core/layout/secondary-navigation/secondary-navigation.component';
import {ProgressBarComponent} from './core/layout/progress-bar/progress-bar.component';
import {ESCAPE, SEARCH_TRIGGER_KEY} from './core/constants/keys';
@Component({
standalone: true,
selector: 'adev-root',
imports: [
CookiePopup,
Navigation,
Footer,
SecondaryNavigation,
RouterOutlet,
RouterLink,
SearchDialog,
ProgressBarComponent,
],
templateUrl: './app.component.html',
styleUrls: ['./app.component.scss'],
})
export class AppComponent implements OnInit {
private readonly document = inject(DOCUMENT);
private readonly ngZone = inject(NgZone);
private readonly router = inject(Router);
private readonly window = inject(WINDOW);
currentUrl = signal('');
displayFooter = signal(false);
displaySecondaryNav = signal(false);
displaySearchDialog: WritableSignal<boolean> = inject(IS_SEARCH_DIALOG_OPEN);
isBrowser = isPlatformBrowser(inject(PLATFORM_ID));
ngOnInit(): void {
this.setSearchDialogVisibilityOnKeyPress();
this.closeSearchDialogOnNavigationSkipped();
this.router.events
.pipe(
filter((e): e is NavigationEnd => e instanceof NavigationEnd),
map((event) => event.urlAfterRedirects),
)
.subscribe((url) => {
this.currentUrl.set(url);
this.setComponentsVisibility();
this.displaySearchDialog.set(false);
});
this.focusFirstHeadingOnRouteChange();
}
focusFirstHeading(): void {
if (!this.isBrowser) {
return;
}
const h1 = this.document.querySelector<HTMLHeadingElement>('h1');
h1?.focus();
}
private setComponentsVisibility(): void {
const activatedRoute = getActivatedRouteSnapshotFromRouter(this.router as any);
this.displaySecondaryNav.set(activatedRoute.data['displaySecondaryNav']);
this.displayFooter.set(!activatedRoute.data['hideFooter']);
}
private focusFirstHeadingOnRouteChange(): void {
this.router.events
.pipe(
filter((e): e is NavigationEnd => e instanceof NavigationEnd),
// Skip first emission, cause on the initial load we would like to `Skip to main content` popup when it's focused
skip(1),
)
.subscribe(() => {
this.focusFirstHeading();
});
}
private setSearchDialogVisibilityOnKeyPress(): void {
this.ngZone.runOutsideAngular(() => {
this.window.addEventListener('keydown', (event: KeyboardEvent) => {
if (event.key === SEARCH_TRIGGER_KEY && (event.metaKey || event.ctrlKey)) {
this.ngZone.run(() => {
event.preventDefault();
this.displaySearchDialog.update((display) => !display);
});
}
if (event.key === ESCAPE && this.displaySearchDialog()) {
this.ngZone.run(() => {
event.preventDefault();
this.displaySearchDialog.set(false);
});
}
});
});
}
private closeSearchDialogOnNavigationSkipped(): void {
this.router.events.pipe(filter((event) => event instanceof NavigationSkipped)).subscribe(() => {
this.displaySearchDialog.set(false);
});
}
}