function commerce_coupon_form_commerce_discount_form_alter in Commerce Coupon 7.2

Implements hook_form_FORM_ID_alter().

File

./commerce_coupon.module, line 1437

Provides coupon functionality for Drupal Commerce.

Code

function commerce_coupon_form_commerce_discount_form_alter(&$form, &$form_state) {

  // Attach a UI for adding associated coupon entities.
  if (isset($form_state['triggering_element'])) {
    $trigger = end($form_state['triggering_element']['#array_parents']);
  }
  else {
    $trigger = NULL;
  }

  // We do not want to show the management tools if there are more than 100
  // coupons attached to this discount.
  $discount_wrapper = entity_metadata_wrapper('commerce_discount', $form_state['commerce_discount']);
  $coupon_count = isset($form_state['coupons']) ? count($form_state['coupons']) : $discount_wrapper->coupon_count
    ->value();

  // Establish a container.
  $form['coupons'] = array(
    '#type' => 'fieldset',
    '#title' => t('Coupon conditions'),
    '#tree' => TRUE,
    '#prefix' => '<div id="commerce-coupon-discount-coupon-form">',
    '#suffix' => '</div>',
    '#attached' => array(
      'css' => array(
        drupal_get_path('module', 'commerce_coupon') . '/css/commerce_coupon.css',
      ),
    ),
  );
  if ($coupon_count > 100) {

    // If there are too many coupons on this discount, do not try to manage
    // them all on the discount page.
    $form['coupons']['count_message'] = array(
      '#markup' => t('Currently there are @n coupons attached to this discount. Manage them through the !ui_link', array(
        '@n' => $coupon_count,
        '!ui_link' => l(t('coupons UI'), 'admin/commerce/coupons'),
      )),
    );
    return;
  }
  $form['#validate'][] = 'commerce_coupon_form_attach_coupons_validate';
  $form['#submit'][] = 'commerce_coupon_form_attach_coupons';

  // Keep track of coupons that have been added if there is a reasonably small
  // amount.
  if (!isset($form_state['coupons'])) {
    $form_state['coupons'] = $discount_wrapper->coupons
      ->value();

    // Keep track of these so we know which to get rid of at the end.
    $form_state['original_coupons'] = $form_state['coupons'];
  }
  $coupons =& $form_state['coupons'];

  // Handle certain triggers.
  switch ($trigger) {
    case 'remove_coupon':
      $edit_delta = $form_state['triggering_element']['#delta'];
      unset($coupons[$edit_delta]);
      break;
    case 'edit_coupon':
      $edit_delta = $form_state['triggering_element']['#delta'];

      // Store the index of the coupon that we are editing.
      $form_state['edit_coupon'] = $coupons[$edit_delta];
      $form_state['edit_coupon']->delta = $edit_delta;
      break;
  }

  // Keep track of whether there is a coupon being edited currently.
  if (isset($form_state['edit_coupon'])) {
    $coupon = $form_state['edit_coupon'];
  }

  // Ajax specifications.
  $ajax = array(
    'callback' => 'commerce_coupon_discount_coupon_form_ajax',
    'wrapper' => 'commerce-coupon-discount-coupon-form',
  );

  // Add new coupons.
  $form['coupons']['add'] = array(
    '#type' => 'button',
    '#value' => t('Add new coupon'),
    '#ajax' => $ajax,
    '#limit_validation_errors' => array(
      array(
        'coupons',
        'coupon_form',
      ),
    ),
  );

  // Find/add existing coupon.
  $form['coupons']['add_existing'] = array(
    '#type' => 'button',
    '#value' => t('Add existing coupon'),
    '#ajax' => $ajax,
    '#limit_validation_errors' => array(
      array(
        'coupons',
        'find_coupon_code',
      ),
    ),
  );
  if ($trigger == 'add' || isset($coupon) && !empty($coupon->is_new) && !isset($form_state['edit_coupon']->delta)) {
    if (!isset($coupon)) {
      $coupon = commerce_coupon_create('discount_coupon');
    }
    $form['coupons']['coupon_form'] = array(
      '#type' => 'container',
      '#parents' => array(
        'coupons',
        'coupon_form',
      ),
    );

    // Attach the coupon form.
    commerce_coupon_attach_ajax_coupon_entity_form($form['coupons']['coupon_form'], $form_state, $coupon, $ajax, array(
      array(
        'coupons',
      ),
    ));

    // Add responsive visibility states to the code line.
    $form['coupons']['coupon_form']['code']['#states'] = array(
      'disabled' => array(
        'input[name="coupons[coupon_form][generate]"]' => array(
          'checked' => TRUE,
        ),
      ),
    );
    $form['coupons']['coupon_form']['save_coupon']['#limit_validation_errors'] = array(
      array(
        'coupons',
        'coupon_form',
      ),
    );
    $form_state['edit_coupon'] = $coupon;
  }
  elseif ($trigger == 'add_existing') {
    $form['coupons']['find_coupon_code'] = array(
      '#type' => 'textfield',
      '#title' => t('Add existing coupon code'),
      '#autocomplete_path' => 'commerce/coupons/find',
    );

    // Add existing button.
    $form['coupons']['add_existing_coupon'] = array(
      '#type' => 'button',
      '#value' => t('Add'),
      '#ajax' => $ajax,
      '#limit_validation_errors' => array(
        array(
          'coupons',
          'find_coupon_code',
        ),
      ),
    );

    // Cancel add existing button.
    $form['coupons']['cancel_add_existing'] = array(
      '#type' => 'button',
      '#value' => t('Cancel'),
      '#ajax' => $ajax,
      '#limit_validation_errors' => array(),
    );
  }

  // Attach coupons management table.
  $form['coupons']['manage_coupons'] = array(
    '#theme' => 'commerce_coupon_manage_discount_coupons',
  );
  if (isset($coupons)) {
    foreach ($coupons as $delta => $coupon) {
      $form['coupons']['manage_coupons'][$delta]['#coupon'] = $coupon;
      if (isset($form_state['edit_coupon']->delta) && $delta == $form_state['edit_coupon']->delta) {

        // If this one is selected, attach a coupon form.
        $form['coupons']['manage_coupons'][$delta]['coupon_form'] = array(
          '#type' => 'container',
          '#parents' => array(
            'coupons',
            'manage_coupons',
            $delta,
            'coupon_form',
          ),
        );
        commerce_coupon_attach_ajax_coupon_entity_form($form['coupons']['manage_coupons'][$delta]['coupon_form'], $form_state, $coupon, $ajax, array(
          array(
            'coupons',
            'manage_coupons',
            $delta,
          ),
        ));

        // Add responsive visibility states to the code line.
        $form['coupons']['manage_coupons'][$delta]['coupon_form']['code']['#states'] = array(
          'disabled' => array(
            'input[name="coupons[manage_coupons][' . $delta . '][coupon_form][generate]"]' => array(
              'checked' => TRUE,
            ),
          ),
        );
      }
      else {
        $form['coupons']['manage_coupons'][$delta]['edit_coupon'] = array(
          '#type' => 'button',
          '#ajax' => $ajax,
          '#value' => t('edit'),
          '#limit_validation_errors' => array(),
          '#delta' => $delta,
          '#name' => 'edit-coupon-' . $delta,
        );
        $form['coupons']['manage_coupons'][$delta]['remove_coupon'] = array(
          '#type' => 'button',
          '#ajax' => $ajax,
          '#value' => t('remove'),
          '#limit_validation_errors' => array(),
          '#delta' => $delta,
          '#name' => 'remove-coupon-' . $delta,
        );
      }
    }
  }
  else {

    // This means there are too many coupons for the management widget to
    // handle. Provide a summary.
    $form['coupons']['coupons_summary'] = array(
      '#theme' => 'commerce_coupon_discount_coupons_summary',
      '#count' => $coupon_count,
    );
  }

  // Clear the input if save was successful.
  unset($form_state['values']['coupons']['coupon_form']);
  unset($form_state['input']['coupons']['coupon_form']);
  $form_state['coupons'] = $coupons;
}