/**
  * @brief Renders the HTML and prints it directly.
  *
  * @param string $id The HTML id attribute for the text input, this is also set as the name attribute.
  * @param string $value The content value of the text input.
  * @param string $desc Optional description, shown in a separate paragraph below the the text input.
  * @return void
  */
 public static function render($id, $value, $desc = '')
 {
     $attrs = array('id' => $id, 'value' => $value, 'htmlClasses' => 'regular-text');
     if (!empty($desc)) {
         $attrs['aria'] = array('describedby' => sprintf('%s-description', $id));
     }
     $input = new BTCInputText($attrs);
     $input->render();
     if (!empty($desc)) {
         printf('<p id="%s-description" class="description">%s</p>', $id, $desc);
     }
 }
 /**
  * Displays the shortcode content for the Bootstrap 3 style.
  *
  * @param string $input The input string, can be empty.
  * @param int $bookingid The ID of the BTB_Booking to process.
  * @param array $atts The shortcode attributes. See class description for explanation.
  */
 public static function bs3_style_filter($input, $bookingid, array $atts)
 {
     $ret = $input;
     $ret .= '<div id="btb_checkout_table">';
     // START CREATING FORM
     if (!empty($atts['headline'])) {
         $ret .= '<h3>' . $atts['headline'] . '</h3>';
     }
     $ret .= '<form id="btb_checkout_form" method="post" onSubmit="return checkForm()">';
     $ret .= wp_nonce_field('btb_checkout_data', 'btb_checkout_nonce', true, false);
     $ret .= '<input type="hidden" value="' . $bookingid . '" id="btb_checkout_bookingid" name="btb_checkout_bookingid">';
     $ret .= '<input type="hidden" value="false" id="btb_checkout_cancel" name="btb_checkout_cancel">';
     $ret .= '<div class="row btb_checkout_row">';
     $formLabel = new BTCFormLabel(array('for' => 'btb_checkout_title'), __('Form of address', 'bt-booking'));
     $formSelect = new BTCFormSelect(array('mr' => __('Mr.', 'bt-booking'), 'mrs' => __('Mrs.', 'bt-booking')), array('id' => 'btb_checkout_title'), array('htmlClasses' => 'form-control'));
     $ret .= '<div class="form-group col-md-2">' . $formLabel->render(false) . '<br>' . $formSelect->render(false) . '</div>';
     $firstNameLabel = new BTCFormLabel(array('for' => 'btb_checkout_first_name'), __('First name', 'bt-booking') . '<span style="color:red">*</span>');
     $firstNameInput = new BTCInputText(array('id' => 'btb_checkout_first_name', 'required' => true, 'htmlClasses' => 'form-control'));
     $ret .= '<div class="form-group col-md-5">' . $firstNameLabel->render(false) . $firstNameInput->render(false) . '</div>';
     $lastNameLabel = new BTCFormLabel(array('for' => 'btb_checkout_last_name'), __('Last name', 'bt-booking') . '<span style="color:red">*</span>');
     $lastNameInput = new BTCInputText(array('id' => 'btb_checkout_last_name', 'required' => true, 'htmlClasses' => 'form-control'));
     $ret .= '<div class="form-group col-md-5">' . $lastNameLabel->render(false) . $lastNameInput->render(false) . '</div>';
     $ret .= '</div>';
     $ret .= '<div class="row btb_checkout_row">';
     $addressLabel = new BTCFormLabel(array('for' => 'btb_checkout_address'), __('Address', 'bt-booking') . '<span style="color:red">*</span>');
     $addressInput = new BTCInputText(array('id' => 'btb_checkout_address', 'required' => true, 'htmlClasses' => 'form-control'));
     $ret .= '<div class="form-group col-md-12">' . $addressLabel->render(false) . $addressInput->render(false) . '</div>';
     $ret .= '</div>';
     $ret .= '<div class="row btb_checkout_row">';
     $plzLabel = new BTCFormLabel(array('for' => 'btb_checkout_zip'), __('Postal code', 'bt-booking') . '<span style="color:red">*</span>');
     $plzInput = new BTCInputText(array('id' => 'btb_checkout_zip', 'required' => true, 'htmlClasses' => 'form-control'));
     $ret .= '<div class="form-group col-md-3">' . $plzLabel->render(false) . $plzInput->render(false) . '</div>';
     $cityLabel = new BTCFormLabel(array('for' => 'btb_checkout_city'), __('City', 'bt-booking') . '<span style="color:red">*</span>');
     $cityInput = new BTCInputText(array('id' => 'btb_checkout_city', 'required' => true, 'htmlClasses' => 'form-control'));
     $ret .= '<div class="form-group col-md-4">' . $cityLabel->render(false) . $cityInput->render(false) . '</div>';
     $countryLabel = new BTCFormLabel(array('for' => 'btb_checkout_country'), __('Country', 'bt-booking') . '<span style="color:red">*</span>');
     $countrySelect = new BTCFormSelect(BTBookingCountries::get_countries(), array('id' => 'btb_checkout_country', 'htmlClasses' => 'form-control'));
     $ret .= '<div class="form-group col-md-5">' . $countryLabel->render(false) . '<br>' . $countrySelect->render(false) . '</div>';
     $ret .= '</div>';
     $ret .= '<div class="row btb_checkout_row">';
     $phoneLabel = new BTCFormLabel(array('for' => 'btb_checkout_phone'), __('Phone number', 'bt-booking') . '<span style="color:red">*</span>');
     $phoneInput = new BTCInputText(array('id' => 'btb_checkout_phone', 'required' => true, 'pattern' => '^[+0123456789][\\/\\-\\d\\s]*', 'htmlClasses' => 'form-control'));
     $ret .= '<div class="form-group col-md-6">' . $phoneLabel->render(false) . $phoneInput->render(false) . '</div>';
     $emailLabel = new BTCFormLabel(array('for' => 'btb_checkout_mail'), __('E-mail address', 'bt-booking') . '<span style="color:red">*</span>');
     $emailInput = new BTCInputText(array('id' => 'btb_checkout_mail', 'required' => true, 'htmlClasses' => 'form-control'));
     $ret .= '<div class="form-group col-md-6">' . $emailLabel->render(false) . $emailInput->render(false) . '</div>';
     $ret .= '</div>';
     $ret .= '<div class="row btb_checkout_row"><div class="col-md-12">';
     $ret .= '<label for="btb_checkout_notes">' . __('Booking notes', 'bt-booking') . '</label><textarea style="width:100%" rows=5 id="btb_checkout_notes" name="btb_checkout_notes" placeholder="' . __('Notes for your booking', 'bt-booking') . '"></textarea>';
     $ret .= '</div></div>';
     $info = get_option('btb_checkout_info', '');
     if (!empty($info)) {
         $ret .= '<div class="row btb_checkout_row"><div class="col-md-12"><div id="btb_checkout_info">' . $info . '</div></div></div>';
     }
     if (get_option('btb_checkout_require_terms', 0)) {
         $ret .= '<div class="row btb_checkout_row"><div class="col-md-12"><fieldset><label for="btb_checkout_terms_accepted"><input type="checkbox" id="btb_checkout_terms_accepted" name="btb_checkout_terms_accepted" value="1" required></input>' . get_option('btb_checkout_require_text', '') . '</label></fieldset></div></div>';
     }
     $ret .= '<div class="row btb_checkout_row"><div class="col-md-12"><div id="error_message_container" style="display:none"></div></div></div>';
     $ret .= '<div class="btb_checkout_row">';
     $ret .= '<button style="float:right" type="submit" class="btn btn-primary btn-sm">' . get_option('btb_checkout_book_now_text', __('Book now', 'bt-booking')) . '</button>';
     $ret .= '<button formnovalidate onClick="cancelBooking()" style="float:left" type="submit" class="btn btn-warning btn-sm">' . __('Cancel booking', 'bt-booking') . '</button>';
     $ret .= '</div>';
     $ret .= '</form>';
     // END CREATING FORM
     $ret .= '</div>';
     // END CONTAINER
     return $ret;
 }