hero-detail.component.ts

import { Component, ElementRef, OnInit, ViewChild } from '@angular/core';
import { ActivatedRoute } from '@angular/router';
import { Location } from '@angular/common';

import { Hero } from '../hero';
import { HeroService } from '../hero.service';

@Component({
  selector: 'app-hero-detail',
  templateUrl: './hero-detail.component.html',
  styleUrls: [ './hero-detail.component.css' ]
})
export class HeroDetailComponent implements OnInit {
  hero: Hero = { id: 0, name: "" };
  @ViewChild("editor") editor!: ElementRef;

  constructor(
    private route: ActivatedRoute,
    private heroService: HeroService,
    private location: Location
  ) {}

  ngOnInit(): void {
    this.getHero();
  }

  ngAfterViewInit(): void {
    // Register web component event (we need to bind "this" to the Angular component!)
    this.editor.nativeElement.heroChanged = this.onHeroChanged.bind(this);
  }

  getHero(): void {
    const id = parseInt(this.route.snapshot.paramMap.get('id')!, 10);
    this.heroService.getHero(id)
      .subscribe(hero => this.hero = hero);
  }

  onHeroChanged(hero: Hero) {
    console.log("Hero changed from Blazor component: " + hero.name);
    this.hero = hero;
  }

  goBack(): void {
    this.location.back();
  }

  save(): void {
    if (this.hero) {
      this.heroService.updateHero(this.hero)
        .subscribe(() => this.goBack());
    }
  }
}