Created
August 14, 2018 00:13
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import { Component, State, Listen, Watch } from "@stencil/core"; | |
@Component({ | |
tag: "todo-list", | |
styleUrl: "todo-list.css" | |
}) | |
export class TodoList { | |
@State() concluidas: number = 0; | |
@State() tarefas: Array<{ feito: boolean; descricao: string }> = []; | |
@State() input: string = ""; | |
@Listen('keydown.enter') operaTeclaEnter() { | |
this.salvar(); | |
} | |
@Watch('tarefas') watchaTarefasConcluidas(newValue: Array<any>) { | |
this.concluidas = newValue.reduce((count, val, i, newValue) => val.feito ? ++count : count, 0); | |
} | |
changeInputValue = ev => this.input = ev.target.value; | |
salvar = () => { | |
if (this.input != "" && this.input.trim() != "") { | |
this.tarefas = [...this.tarefas, { descricao: this.input, feito: false }]; | |
this.input = ""; | |
} | |
} | |
tarefaConcluida = (tarefa: CustomEvent) => { | |
this.tarefas[tarefa.detail.pos].feito = tarefa.detail.feito; | |
this.tarefas = [...this.tarefas]; | |
} | |
excluirTarefas = (ev: CustomEvent) => { | |
this.tarefas.splice(ev.detail, 1); | |
this.tarefas = [...this.tarefas]; | |
} | |
render() { | |
return ( | |
<div class="todo"> | |
<h2 class="titulo">Lista de tarefas</h2> | |
<div class="input"> | |
<div> | |
<input type="text" placeholder="Nova tarefa..." class="input--campo" value={this.input} onInput={(ev) => this.changeInputValue(ev)} /> | |
</div> | |
<button class="input--botao" onClick={() => this.salvar()}>Adicionar</button> | |
</div> | |
<p class="contador">{`(${this.concluidas}/${this.tarefas.length})`}</p> | |
<hr /> | |
<div class="lista"> | |
{this.tarefas.length > 0 ? ( | |
this.tarefas.map((tarefa, index) => <todo-item posicao={index} descricao={tarefa.descricao} onMarcaFeito={(ev) => this.tarefaConcluida(ev)} onExcluiItem={ev => this.excluirTarefas(ev)}></todo-item>) | |
) : ( | |
<h2 class="lista--vazia">Você não possui tarefas!</h2> | |
)} | |
</div> | |
</div> | |
); | |
} | |
} |
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