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

Bootstrap Italia è un tema Bootstrap 5 per la creazione di applicazioni web nel pieno rispetto delle linee guida di design per i siti internet e i servizi digitali della PA

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 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="password"]',
  'input.input-password[data-bs-input]',
  'input[data-bs-autocomplete][type="search"]',
  'input[type="time"]',
  'input[type="radio"]',
  'input[type="checkbox"]',
]

const createInput = (element) => {
  const toExclude = !!excludes.find((selector) => element.matches(selector))
  const isInputNumber = !!(element.getAttribute('type') === 'number' && element.parentNode.querySelector('button[class^="input-number-"]')) //check if it's a InputNumber component
  if (!toExclude && !isInputNumber) {
    return Input.getOrCreateInstance(element)
  }
  return null
}

document.addEventListener('DOMContentLoaded', function () {
  var frmel = document.querySelectorAll('input, textarea, label')
  frmel.forEach(function (item) {
    const target = InputLabel.getInputFromLabel(item) || item
    createInput(target)
  })
})

export default Input