| 1 | import { abreElementoHtml } from "../abreElementoHtml.js" |
| 2 | import { cierraElementoHtmo } from "../cierraElementoHtmo.js" |
| 3 | import { querySelector } from "../querySelector.js" |
| 4 | |
| 5 | export class MdOptionsMenu extends HTMLElement { |
| 6 | |
| 7 | getContent() { |
| 8 | return ` |
| 9 |
|
| 10 | <style> |
| 11 |
|
| 12 | :host { |
| 13 | position: absolute; |
| 14 | } |
| 15 |
|
| 16 | </style> |
| 17 |
|
| 18 | <slot></slot>` |
| 19 | } |
| 20 | |
| 21 | constructor() { |
| 22 | super() |
| 23 | const shadow = this.attachShadow({ mode: "open" }) |
| 24 | shadow.innerHTML = this.getContent() |
| 25 | this._configuraOpciones = this._configuraOpciones.bind(this) |
| 26 | |
| 27 | |
| 28 | |
| 29 | |
| 30 | |
| 31 | this._slot = querySelector(shadow, "slot") |
| 32 | |
| 33 | |
| 34 | |
| 35 | |
| 36 | this._opciones = [] |
| 37 | this._slot.addEventListener("slotchange", this._configuraOpciones) |
| 38 | } |
| 39 | |
| 40 | connectedCallback() { |
| 41 | this.classList.add("md-menu") |
| 42 | this.role = "listbox" |
| 43 | } |
| 44 | |
| 45 | |
| 46 | |
| 47 | |
| 48 | get opciones() { |
| 49 | return this._opciones |
| 50 | } |
| 51 | |
| 52 | get seleccion() { |
| 53 | |
| 54 | const seleccionado = this.querySelector(".selected") |
| 55 | return seleccionado === null ? "" : seleccionado.value |
| 56 | } |
| 57 | |
| 58 | _configuraOpciones() { |
| 59 | |
| 60 | |
| 61 | |
| 62 | const opciones = [] |
| 63 | for (const opcion of this._slot.assignedElements()) { |
| 64 | opcion.role = "option" |
| 65 | if (opcion instanceof HTMLElement) { |
| 66 | opciones.push(opcion) |
| 67 | } |
| 68 | } |
| 69 | this._opciones = opciones |
| 70 | } |
| 71 | |
| 72 | abre() { |
| 73 | abreElementoHtml(this) |
| 74 | } |
| 75 | |
| 76 | |
| 77 | cierra() { |
| 78 | cierraElementoHtmo(this) |
| 79 | } |
| 80 | |
| 81 | |
| 82 | |
| 83 | |
| 84 | muestraValue(value) { |
| 85 | let texto = "" |
| 86 | for (const opcion of this._opciones) { |
| 87 | if (opcion.dataset.value === value) { |
| 88 | opcion.classList.add("selected") |
| 89 | let textContent = opcion.textContent |
| 90 | if (texto === "" && textContent !== null) { |
| 91 | textContent = textContent.trim() |
| 92 | if (textContent !== "") { |
| 93 | texto = textContent |
| 94 | } |
| 95 | } |
| 96 | } else { |
| 97 | opcion.classList.remove("selected") |
| 98 | } |
| 99 | } |
| 100 | return texto |
| 101 | } |
| 102 | |
| 103 | } |
| 104 | |
| 105 | customElements.define("md-options-menu", MdOptionsMenu) |