angular-docs-cn/public/docs/_examples/toh-6/ts/app/hero-detail.component.ts

54 lines
1.4 KiB
TypeScript

// #docplaster
// #docregion
import { Component, Input, Output, OnInit, EventEmitter } from '@angular/core';
import { RouteParams } from '@angular/router-deprecated';
import { Hero } from './hero';
import { HeroService } from './hero.service';
@Component({
selector: 'my-hero-detail',
templateUrl: 'app/hero-detail.component.html',
styleUrls: ['app/hero-detail.component.css']
})
export class HeroDetailComponent implements OnInit {
@Input() hero: Hero;
@Output() close = new EventEmitter();
error: any;
navigated = false; // true if navigated here
constructor(
private _heroService: HeroService,
private _routeParams: RouteParams) {
}
// #docregion ngOnInit
ngOnInit() {
if (this._routeParams.get('id') !== null) {
let id = +this._routeParams.get('id');
this.navigated = true;
this._heroService.getHero(id)
.then(hero => this.hero = hero);
} else {
this.navigated = false;
this.hero = new Hero();
}
}
// #enddocregion ngOnInit
// #docregion save
save() {
this._heroService
.save(this.hero)
.then(hero => {
this.hero = hero; // saved hero, w/ id if new
this.goBack(hero);
})
.catch(error => this.error = error); // TODO: Display error message
}
// #enddocregion save
goBack(savedHero: Hero = null) {
this.close.emit(savedHero);
if (this.navigated) { window.history.back(); }
}
}