care-8.x-1.x-dev/care_postcodeanywhere/care_postcodeanywhere.module

<?php

/*
 * Configuration:
 *
 *    /admin/config/content/postcodeanywhere
 *
 * Add the string ".pca-postcode-wrapper" to the field for "Postcode Wrapper".
 * Add the string ".pca-postcode-lookup-field" to the field for "Postcode Input".
 * Add the string ".pca-postcode-manual-field" to the field for "Postcode Input - Manual".
 * Add the string ".pca-address-details" to the field for "Address Wrapper".
 * Add the string ".pca-address-line-1" to the field for "Address Line 1".
 * Add the string ".pca-address-line-2" to the field for "Address Line 2".
 * Add the string ".pca-address-line-3" to the field for "Address Line 3".
 * Add the string ".pca-town" to the field for "Town".
 * Add the string ".pca-county" to the field for "County".
*/

/**
 * Implements hook_field_widget_WIDGET_TYPE_form_alter().
 */
function care_postcodeanywhere_field_widget_care_address_widget_form_alter(&$element, &$form_state, $context) {
  // The postcodeanywhere module currently only works with one address per page.
  if ($context['field']['cardinality'] == 1) {
    $delta = $context['delta'];
    // Move address number display and country code to top.
    $element['address_number_display']['#weight'] = -20;
    $element['country_code']['#weight'] = -15;
    // Add classes for postcodeanywhere.
    $element['address_line_1']['#attributes']['class'][] = 'pca-address-line-1';
    $element['address_line_2']['#attributes']['class'][] = 'pca-address-line-2';
    $element['address_line_3']['#attributes']['class'][] = 'pca-address-line-3';
    $element['town']['#attributes']['class'][] = 'pca-town';
    $element['county']['#attributes']['class'][] = 'pca-county';
    $element['postcode']['#attributes']['class'][] = 'pca-postcode-manual-field';
    // Add postcode lookup text field.
    $element['postcode_lookup'] = [
      '#type' => 'textfield',
      '#title' => t('Postcode Lookup'),
      '#default_value' => isset($context['items'][$delta]['postcode']) ? $context['items'][$delta]['postcode'] : '',
      '#size' => 10,
      '#maxlength' => 10,
      '#weight' => -10,
      '#attributes' => ['class' => ['pca-postcode-lookup-field']],
      '#prefix' => '<div class="pca-postcode-wrapper">',
      '#suffix' => '</div>',
    ];
    /*
     * Add the string ".pca-address-details" to the field for "Address Wrapper".
     */
    $element['pca_address_wrapper_start'] = [
      '#markup' => '<div class="pca-address-details">',
      '#weight' => -5,
    ];
    $element['pca_address_wrapper_end'] = [
      '#markup' => '</div>',
    ];
  }
}

/**
 * Implements hook_field_widget_WIDGET_TYPE_form_alter().
 */
function care_postcodeanywhere_field_widget_care_address_select_widget_form_alter(&$element, &$form_state, $context) {
  // The postcodeanywhere module currently only works with one address per page.
  if ($context['field']['cardinality'] == 1) {
    // Move address selector and country code to top.
    $delta = $context['delta'];
    $element['address_index']['#weight'] = -20;
    $element['country_code']['#weight'] = -15;
    // Add classes for postcodeanywhere.
    $element['address_line_1']['#attributes']['class'][] = 'pca-address-line-1';
    $element['address_line_2']['#attributes']['class'][] = 'pca-address-line-2';
    $element['address_line_3']['#attributes']['class'][] = 'pca-address-line-3';
    $element['town']['#attributes']['class'][] = 'pca-town';
    $element['county']['#attributes']['class'][] = 'pca-county';
    $element['postcode']['#attributes']['class'][] = 'pca-postcode-manual-field';
    // Add postcode lookup text field.
    $element['postcode_lookup'] = [
      '#type' => 'textfield',
      '#title' => t('Postcode Lookup'),
      '#default_value' => isset($context['items'][$delta]['postcode']) ? $context['items'][$delta]['postcode'] : '',
      '#size' => 10,
      '#maxlength' => 10,
      '#weight' => -10,
      '#states' => $element['address_line_1']['#states'],
      '#attributes' => ['class' => ['pca-postcode-lookup-field']],
      '#prefix' => '<div class="pca-postcode-wrapper">',
      '#suffix' => '</div>',
    ];
    $element['pca_address_wrapper_start'] = [
      '#markup' => '<div class="pca-address-details">',
      '#weight' => -5,
    ];
    $element['pca_address_wrapper_end'] = [
      '#markup' => '</div>',
    ];
  }
}