bootstrap-italia/src/js/plugins/input.js

import BaseComponent from 'bootstrap/js/src/base-component.js'

import EventHandler from 'bootstrap/js/src/dom/event-handler'
import SelectorEngine from 'bootstrap/js/src/dom/selector-engine'

import InputLabel from './input-label'

const NAME = 'input'
const DATA_KEY = 'bs.input'
const EVENT_KEY = `.${DATA_KEY}`
//const DATA_API_KEY = '.data-api'

//const SELECTOR_INPUT = 'input[data-bs-input]'

const EVENT_CHANGE = `change${EVENT_KEY}`

class Input extends BaseComponent {
  constructor(element) {
    super(element)

    this._label = new InputLabel(element)
    this._bindEvents()
  }

  // Getters

  static get NAME() {
    return NAME
  }

  // Public

  // Private
  _bindEvents() {
    if (this._element.getAttribute('type') === 'file') {
      EventHandler.on(this._element, EVENT_CHANGE, () => {
        this._handleFileDescription()
      })
    }
  }

  _handleFileDescription() {
    const fileNames = []
    let labelPrefix = ''

    Array.from(this._element.files).forEach((file) => {
      const fileSize = Math.round(parseInt(file.size, 10) / 1024)
      fileNames.push(file.name + ' (' + fileSize + 'kb)')
    })

    if (this._element.files.length > 1) {
      labelPrefix = this._element.files.length + ' file da caricare: '
    }

    const label = SelectorEngine.findOne('label[for="' + this._element.getAttribute('id') + '"] label.form-file-name', this._element)
    if (label) {
      label.innerText = labelPrefix + fileNames.join('; ')
    }
  }
}

/**
 * ------------------------------------------------------------------------
 * Data Api implementation
 * ------------------------------------------------------------------------
 */
const excludes = [
  'select',
  'input[data-bs-input][type="number"]',
  'input[data-bs-input][type="password"]',
  'input[data-bs-autocomplete][type="search"]',
  'input[type="time"]',
]

const inputs = SelectorEngine.find('input, textarea').filter((input) => {
  let result = true
  excludes.forEach((selector) => {
    if (input.matches(selector)) {
      result = false
    }
  })
  return result
})
inputs.forEach((input) => {
  Input.getOrCreateInstance(input)
})

export default Input