decide.nolog.cz/app/components/create-options-datetime.hbs

<div class="cr-form-wrapper box">
  {{#if this.errorMessage}}
    <BsAlert type="warning">
      {{t this.errorMessage}}
    </BsAlert>
  {{/if}}

  <BsForm
    @onInvalid={{scroll-first-invalid-element-into-view-port}}
    @onSubmit={{action "submit"}}
    @formLayout="horizontal"
    @model={{this}}
    novalidate
    as |form|
  >
    <div class="days">
      {{#each @dates as |date index|}}
        {{!
          show summarized validation state for all times in a day
        }}
        <div
          class={{if
            (get this.daysValidationState date.day)
            (concat "label-has-" (get this.daysValidationState date.day))
            "label-has-no-validation"
          }}
          data-test-day={{date.day}}
        >
          <form.element
            {{!
              TODO: Simplify to dateStyle="full" after upgrading to Ember Intl v6
            }}
            @label={{format-date
              date.jsDate
              weekday="long"
              day="numeric"
              month="long"
              year="numeric"
            }}
            {{!
              show label only if it differ from label before
              Nested-helpers are called first and object-at requires a positive integer
              but returns undefined if an element with the passed in index does not exist.
              Therefore we pass in array length if index is null. Cause index starting
              by zero there can't be any element with an index === array.length.
            }}
            @invisibleLabel={{eq
              date.day
              (get
                (object-at (if index (sub index 1) @dates.length) @dates) "day"
              )
            }}
            @model={{date}}
            @property="time"
            class="option"
            as |el|
          >
            <div class="input-group">
              <el.control
                @onChange={{fn this.inputChanged date}}
                @placeholder="00:00"
                @type="time"
                @value={{el.value}}
                {{! focus input if it's the first one }}
                {{autofocus enabled=(eq index 0)}}
                {{! run validation for partially filled input on focusout event }}
                {{on "focusout" (fn this.validateInput date)}}
                {{!
                  Validation for partially input field must be reset if input is cleared.
                  But `@onChange` is not called and `focusout` event not triggered in that
                  scenario. Need to listen to additional events to ensure that partially
                  input validation is updated as soon as user fixed a partially input.
                  The `keyup` events captures all scenarios in which the input is cleared
                  using keyboard. `focusin` event is triggered if user clicks the clears
                  button provided by native input. As a fallback validation is rerun on
                  `focusout`.
                  As the time of implementation this was only affecting Chrome cause
                  Firefox does not consider partially time input as invalid, Edge prevents
                  partially filling in first place and Desktop Safari as well as IE 11
                  do not support `<input type="time">`.
                }}
                {{on "focusin" (fn this.updateInputValidation date)}}
                {{on "keyup" (fn this.updateInputValidation date)}}
                id={{el.id}}
              />
              <div class="input-group-append">
                <BsButton
                  @onClick={{action "deleteOption" date}}
                  @type="link"
                  class="delete"
                  {{! disable delete button if there is only one option }}
                  disabled={{lte @dates.length 1}}
                >
                  <span
                    class="oi oi-trash"
                    title={{t "create.options.button.delete.label"}}
                    aria-hidden="true"
                  ></span>
                  <span class="sr-only">{{t
                      "create.options.button.delete.label"
                    }}</span>
                </BsButton>
              </div>
            </div>

            <BsButton
              @onClick={{fn this.addOption date}}
              @type="link"
              @size="sm"
              class="add cr-option-menu__button cr-option-menu__add-button float-left"
            >
              <span
                class="oi oi-plus"
                title={{t "create.options.button.add.label"}}
                aria-hidden="true"
              ></span>
              <span class="sr-only">{{t
                  "create.options.button.add.label"
                }}</span>
            </BsButton>
          </form.element>
        </div>
      {{/each}}
    </div>

    {{#if (gt this.groupedDates.length 1)}}
      <form.element>
        <BsButton
          @onClick={{action "adoptTimesOfFirstDay"}}
          @size="sm"
          class="adopt-times-of-first-day"
        >
          {{t "create.options-datetime.copy-first-line"}}
        </BsButton>
      </form.element>
    {{/if}}

    <div class="row cr-steps-bottom-nav">
      <div class="col-6 col-md-8 order-12">
        <NextButton />
      </div>
      <div class="col-6 col-md-4 order-1 text-right">
        <BackButton @onClick={{action "previousPage"}} />
      </div>
    </div>
  </BsForm>
</div>