chamilo-lms/public/main/inc/lib/formvalidator/Element/DatePicker.php

<?php

/* For licensing terms, see /license.txt */

/**
 * Form element to select a date.
 */
class DatePicker extends HTML_QuickForm_text
{
    /**
     * @param string       $elementName
     * @param string|array $elementLabel
     * @param array        $attributes
     */
    public function __construct($elementName, $elementLabel = null, $attributes = null)
    {
        if (!isset($attributes['id'])) {
            $attributes['id'] = $elementName;
        }
        $attributes['class'] = 'form-control';

        parent::__construct($elementName, $elementLabel, $attributes);
        $this->_appendName = true;
    }

    /**
     * HTML code to display this datepicker.
     *
     * @return string
     */
    public function toHtml()
    {
        if ($this->_flagFrozen) {
            return $this->getFrozenHtml();
        }

        $id = $this->getAttribute('id');
        $value = $this->getValue();

        if (!empty($value)) {
            $value = api_format_date($value, DATE_FORMAT_LONG_NO_DAY);
        }

        $label = $this->getLabel();
        return '
            <div>'.$label.'</div>
            <div id="'.$id.'" class="flex flex-row mt-1">
                <input '.$this->_getAttrString($this->_attributes).'
                    class="form-control border" type="text" value="'.$value.'" placeholder="'.get_lang('Select date ..').'" data-input>
                <div class="ml-1" id="button-addon3">
                    <button class="btn btn--secondary-outline"  type="button" data-toggle>
                        <i class="pi pi-calendar pi-lg"></i>
                    </button>
                    <button class="btn btn--secondary-outline" type="button" data-clear>
                        <i class="pi pi-times pi-lg"></i>
                    </button>
              </div>
            </div>
        '.$this->getElementJS();
    }

    /**
     * @param string $value
     */
    public function setValue($value)
    {
        if (empty($value)) {
            return;
        }

        $value = substr($value, 0, 16);
        $this->updateAttributes(
            [
                'value' => $value,
            ]
        );
    }

    /**
     * Get the necessary javascript for this datepicker.
     *
     * @return string
     */
    private function getElementJS()
    {
        $js = null;
        $id = $this->getAttribute('id');
        //timeFormat: 'hh:mm'
        $js .= "<script>
            $(function() {
                var config = {
                    altInput: true,
                    altFormat: '".get_lang('F d, Y')."',
                    enableTime: false,
                    dateFormat: 'Y-m-d',
                    wrap: true,
                    locale: {
                      firstDayOfWeek: 1
                    }
                };
                $('#{$id}').flatpickr(config);
                if ($('label[for=\"".$id."\"]').length > 0) {
                    $('label[for=\"".$id."\"]').hide();
                }
             });
        </script>";

        return $js;

        $js .= "<script>
            $(function() {
                var txtDate = $('#$id'),
                    inputGroup = txtDate.parents('.input-group'),
                    txtDateAlt = $('#{$id}_alt'),
                    txtDateAltText = $('#{$id}_alt_text');

                txtDate
                    .hide()
                    .datepicker({
                        defaultDate: '".$this->getValue()."',
                        dateFormat: 'yy-mm-dd',
                        altField: '#{$id}_alt',
                        altFormat: \"".get_lang('MM dd, yy')."\",
                        showOn: 'both',
                        buttonImage: '".Display::return_icon('attendance.png', null, [], ICON_SIZE_TINY, true, true)."',
                        buttonImageOnly: true,
                        buttonText: '".get_lang('Select date')."',
                        changeMonth: true,
                        changeYear: true,
                        yearRange: 'c-60y:c+5y'
                    })
                    .on('change', function (e) {
                        txtDateAltText.text(txtDateAlt.val());
                    });

                txtDateAltText.on('click', function () {
                    txtDate.datepicker('show');
                });

                inputGroup
                    .find('button')
                    .on('click', function (e) {
                        e.preventDefault();

                        $('#$id, #{$id}_alt').val('');
                        $('#{$id}_alt_text').html('');
                    });
            });
        </script>";

        return $js;
    }
}