ministryofjustice/Claim-for-Crown-Court-Defence

moj.Modules.HideErrorOnChange = {

  railsErrorClassName: 'field_with_errors',
  gdsErrorClassName: 'form-group-error',

  config: [{
    delegate: '.form-group.field_with_errors',
    wrapperClassName: 'field_with_errors',
    messageSelector: '.error'
  }, {
    delegate: '.dropdown_field_with_errors',
    wrapperClassName: 'dropdown_field_with_errors',
    messageSelector: '.error'
  }, {
    delegate: 'fieldset.gov_uk_date.error',
    wrapperClassName: 'error',
    messageSelector: 'ul'
  }, {
    delegate: '.gov_uk_date.form-group-error',
    wrapperClassName: 'error',
    messageSelector: 'ul'
  }, {
    delegate: '.dropdown_field_with_errors.has-select',
    wrapperClassName: 'dropdown_field_with_errors',
    messageSelector: '.error',
    eventSelector: 'select'
  }],

  init: function () {
    this.bindListeners()
  },

  removeNestedErrorWrappers: function ($el) {
    const wrappers = $el.find('.' + this.railsErrorClassName)
    $el.find('.form-control-error').removeClass('form-control-error')
    wrappers.removeClass(this.railsErrorClassName)
  },

  removeClassName: function ($el, className) {
    this.removeNestedErrorWrappers($el)
    return $el.removeClass(className)
  },

  removeBySelector: function ($el, selector) {
    return $el.find(selector).remove()
  },

  bindListeners: function () {
    const self = this
    let context

    this.config.forEach(function (opt) {
      context = opt.eventSelector || 'input'
      $(opt.delegate).one('click', context, function (e) {
        const $el = $(e.delegateTarget)
        self.removeClassName($el, opt.wrapperClassName)
        self.removeClassName($el, 'form-group-error')
        self.removeBySelector($el, opt.messageSelector)
      })

      // mainly for FF
      $(opt.delegate).one('focus', context, function (e) {
        $(e.target).trigger('click')
      })

      $(opt.delegate).one('change', context, function (e) {
        $(e.target).trigger('click')
      })
    })
  }
}