| 1 | import { selectorDeNombre } from "./muestraObjeto.js" |
| 2 | |
| 3 | |
| 4 | |
| 5 | |
| 6 | |
| 7 | export function muestraImagenSeleccionada(input, img) { |
| 8 | return new Promise((resolve, reject) => { |
| 9 | setTimeout(() => { |
| 10 | |
| 11 | try { |
| 12 | |
| 13 | const dataUrl = getDataUrlDeSeleccion(input) |
| 14 | |
| 15 | if (dataUrl === "") { |
| 16 | |
| 17 | const src = input.dataset.src |
| 18 | if (src === undefined || src === "") { |
| 19 | img.hidden = true |
| 20 | img.src = "" |
| 21 | } else { |
| 22 | img.hidden = false |
| 23 | img.src = src |
| 24 | } |
| 25 | |
| 26 | } else { |
| 27 | |
| 28 | img.hidden = false |
| 29 | img.src = dataUrl |
| 30 | |
| 31 | } |
| 32 | |
| 33 | resolve(true) |
| 34 | |
| 35 | } catch (error) { |
| 36 | |
| 37 | img.hidden = true |
| 38 | |
| 39 | reject(error) |
| 40 | |
| 41 | } |
| 42 | |
| 43 | }, |
| 44 | 500) |
| 45 | }) |
| 46 | } |
| 47 | |
| 48 | |
| 49 | |
| 50 | |
| 51 | export function getDataUrlDeSeleccion(input) { |
| 52 | const seleccion = getArchivoSeleccionado(input) |
| 53 | if (seleccion === null) { |
| 54 | return "" |
| 55 | } else { |
| 56 | return URL.createObjectURL(seleccion) |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | |
| 61 | |
| 62 | |
| 63 | |
| 64 | export function getArchivoSeleccionado(input) { |
| 65 | if (input.type !== "file") throw new Error('El input debe ser type="file') |
| 66 | const seleccion = input.files |
| 67 | if (seleccion === null) throw new Error('El input debe ser type="file') |
| 68 | if (seleccion.length === 0) { |
| 69 | return null |
| 70 | } else { |
| 71 | return seleccion.item(0) |
| 72 | } |
| 73 | } |