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<?php

/**

 * @file

 * Defines the class for core actions.

 * Belongs to the "action" operation type plugin.

 */

class ViewsBulkOperationsAction extends ViewsBulkOperationsBaseOperation {

  /**

   * Contains the options provided by the user in the configuration form.

   *

   * @var array

   */

  public $formOptions = array();

  /**

   * Returns the access bitmask for the operation, used for entity access checks.

   */

  public function getAccessMask() {

    // Assume edit by default.

    if (empty($this->operationInfo['behavior'])) {

      $this->operationInfo['behavior'] = array('changes_property');

    }

    $mask = 0;

    if (in_array('views_property', $this->operationInfo['behavior'])) {

      $mask |= VBO_ACCESS_OP_VIEW;

    }

    if (in_array('changes_property', $this->operationInfo['behavior'])) {

      $mask |= VBO_ACCESS_OP_UPDATE;

    }

    if (in_array('creates_property', $this->operationInfo['behavior'])) {

      $mask |= VBO_ACCESS_OP_CREATE;

    }

    if (in_array('deletes_property', $this->operationInfo['behavior'])) {

      $mask |= VBO_ACCESS_OP_DELETE;

    }

    return $mask;

  }

  /**

   * Returns whether the provided account has access to execute the operation.

   *

   * @param $account

   */

  public function access($account) {

    // Use actions_permissions if enabled.

    if (module_exists('actions_permissions')) {

      $perm = actions_permissions_get_perm($this->operationInfo['label'], $this->operationInfo['key']);

      if (!user_access($perm, $account)) {

        return FALSE;

      }

    }

    // Check against additional permissions.

    if (!empty($this->operationInfo['permissions'])) {

      foreach ($this->operationInfo['permissions'] as $perm) {

        if (!user_access($perm, $account)) {

          return FALSE;

        }

      }

    }

    // Access granted.

    return TRUE;

  }

  /**

   * Returns the configuration form for the operation.

   * Only called if the operation is declared as configurable.

   *

   * @param $form

   *   The views form.

   * @param $form_state

   *   An array containing the current state of the form.

   * @param $context

   *   An array of related data provided by the caller.

   */

  public function form($form, &$form_state, array $context) {

    // Some modules (including this one) place their action callbacks

    // into separate files. At this point those files might no longer be

    // included due to an #ajax rebuild, so we call actions_list() to trigger

    // inclusion. The same thing is done by actions_do() on execute.

    actions_list();

    $context['settings'] = $this->getAdminOption('settings', array());

    $form_callback = $this->operationInfo['callback'] . '_form';

    return $form_callback($context, $form_state);

  }

  /**

   * Validates the configuration form.

   * Only called if the operation is declared as configurable.

   *

   * @param $form

   *   The views form.

   * @param $form_state

   *   An array containing the current state of the form.

   */

  public function formValidate($form, &$form_state) {

    // Some modules (including this one) place their action callbacks

    // into separate files. At this point those files might no longer be

    // included due to a page reload, so we call actions_list() to trigger

    // inclusion. The same thing is done by actions_do() on execute.

    actions_list();

    $validation_callback = $this->operationInfo['callback'] . '_validate';

    if (function_exists($validation_callback)) {

      $validation_callback($form, $form_state);

    }

  }

  /**

   * Handles the submitted configuration form.

   * This is where the operation can transform and store the submitted data.

   * Only called if the operation is declared as configurable.

   *

   * @param $form

   *   The views form.

   * @param $form_state

   *   An array containing the current state of the form.

   */

  public function formSubmit($form, &$form_state) {

    // Some modules (including this one) place their action callbacks

    // into separate files. At this point those files might no longer be

    // included due to a page reload, so we call actions_list() to trigger

    // inclusion. The same thing is done by actions_do() on execute.

    actions_list();

    $submit_callback = $this->operationInfo['callback'] . '_submit';

    $this->formOptions = $submit_callback($form, $form_state);

  }

  /**

   * Returns the admin options form for the operation.

   *

   * The admin options form is embedded into the VBO field settings and used

   * to configure operation behavior. The options can later be fetched

   * through the getAdminOption() method.

   *

   * @param $dom_id

   *   The dom path to the level where the admin options form is embedded.

   *   Needed for #dependency.

   * @param $field_handler

   *   The Views field handler object for the VBO field.

   */

  public function adminOptionsForm($dom_id, $field_handler) {

    $form = parent::adminOptionsForm($dom_id, $field_handler);

    $settings_form_callback = $this->operationInfo['callback'] . '_views_bulk_operations_form';

    if (function_exists($settings_form_callback)) {

      $settings = $this->getAdminOption('settings', array());

      $form['settings'] = array(

        '#type' => 'fieldset',

        '#title' => t('Operation settings'),

        '#collapsible' => TRUE,

        '#dependency' => array(

          $dom_id . '-selected' => array(1),

        ),

      );

      $settings_dom_id = $dom_id . '-settings';

      $form['settings'] += $settings_form_callback($settings, $this->entityType, $settings_dom_id);

    }

    return $form;

  }

  /**

   * Validates the admin options form.

   *

   * @param $form

   *   The admin options form.

   * @param $form_state

   *   An array containing the current state of the form. Note that this array

   *   is constructed by the VBO views field handler, so it's not a real form

   *   state, it contains only the 'values' key.

   * @param $error_element_base

   *   The base to prepend to field names when using form_set_error().

   *   Needed because the admin settings form is embedded into a bigger form.

   */

  public function adminOptionsFormValidate($form, &$form_state, $error_element_base) {

    parent::adminOptionsFormValidate($form, $form_state, $error_element_base);

    if (!empty($form['settings'])) {

      $settings_validation_callback = $this->operationInfo['callback'] . '_views_bulk_operations_form_validate';

      if (function_exists($settings_validation_callback)) {

        $fake_form = $form['settings'];

        $fake_form_state = array('values' => &$form_state['values']['settings']);

        $error_element_base .= 'settings][';

        $settings_validation_callback($fake_form, $fake_form_state, $error_element_base);

      }

    }

  }

  /**

   * Handles the submitted admin options form.

   * Note that there is no need to handle saving the options, that is done

   * by the VBO views field handler, which also injects the options into the

   * operation object upon instantiation.

   *

   * @param $form

   *   The admin options form.

   * @param $form_state

   *   An array containing the current state of the form. Note that this array

   *   is constructed by the VBO views field handler, so it's not a real form

   *   state, it contains only the 'values' key.

   */

  public function adminOptionsFormSubmit($form, &$form_state) {

    parent::adminOptionsFormSubmit($form, $form_state);

    if (!empty($form['settings'])) {

      $settings_submit_callback = $this->operationInfo['callback'] . '_views_bulk_operations_form_submit';

      if (function_exists($settings_submit_callback)) {

        $fake_form = $form['settings'];

        $fake_form_state = array('values' => &$form_state['values']['settings']);

        $settings_submit_callback($form, $form_state);

      }

    }

  }

  /**

   * Returns whether the operation needs the full selected views rows to be

   * passed to execute() as a part of $context.

   */

  public function needsRows() {

    return !empty($this->operationInfo['pass rows']);

  }

  /**

   * Executes the selected operation on the provided data.

   *

   * @param $data

   *   The data to to operate on. An entity or an array of entities.

   * @param $context

   *   An array of related data (selected views rows, etc).

   */

  public function execute($data, array $context) {

    $context['entity_type'] = $this->entityType;

    $context['settings'] = $this->getAdminOption('settings', array());

    $context += $this->formOptions;

    $context += $this->operationInfo['parameters'];

    // Actions provided by the Drupal system module require the entity to be

    // present in $context, keyed by entity type.

    if (is_object($data)) {

      $context[$this->entityType] = $data;

    }

    actions_do($this->operationInfo['callback'], $data, $context);

    // The action might need to have its entities saved after execution.

    if (in_array('changes_property', $this->operationInfo['behavior'])) {

      $data = is_array($data) ? $data : array($data);

      foreach ($data as $entity) {

        entity_save($this->entityType, $entity);

      }

    }

  }

}