61 lines
1.1 KiB
TypeScript
61 lines
1.1 KiB
TypeScript
import { Injectable } from '@angular/core';
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class Hero {
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constructor(public name: string,
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public state = 'inactive') {
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}
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toggleState() {
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this.state = (this.state === 'active' ? 'inactive' : 'active');
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}
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}
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let ALL_HEROES = [
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'Windstorm',
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'RubberMan',
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'Bombasto',
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'Magneta',
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'Dynama',
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'Narco',
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'Celeritas',
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'Dr IQ',
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'Magma',
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'Tornado',
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'Mr. Nice'
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].map(name => new Hero(name));
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@Injectable()
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export class Heroes implements Iterable<Hero> {
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currentHeroes: Hero[] = [];
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[Symbol.iterator]() {
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return this.currentHeroes.values();
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}
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canAdd() {
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return this.currentHeroes.length < ALL_HEROES.length;
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}
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canRemove() {
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return this.currentHeroes.length > 0;
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}
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addActive() {
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let hero = ALL_HEROES[this.currentHeroes.length];
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hero.state = 'active';
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this.currentHeroes.push(hero);
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}
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addInactive() {
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let hero = ALL_HEROES[this.currentHeroes.length];
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hero.state = 'inactive';
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this.currentHeroes.push(hero);
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}
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remove() {
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this.currentHeroes.splice(this.currentHeroes.length - 1, 1);
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}
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}
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