ViewUI.php 36.7 KB
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<?php

/**
 * @file
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 * Definition of Drupal\views_ui\ViewUI.
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 */

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namespace Drupal\views_ui;
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use Drupal\Component\Utility\String;
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use Drupal\Component\Utility\Timer;
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use Drupal\Component\Utility\Xss;
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use Drupal\views\Views;
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use Drupal\Core\Entity\EntityStorageInterface;
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use Drupal\views\ViewExecutable;
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use Drupal\Core\Database\Database;
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use Drupal\Core\TypedData\TypedDataInterface;
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use Drupal\Core\Session\AccountInterface;
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use Drupal\views\Plugin\views\query\Sql;
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use Drupal\views\Entity\View;
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use Drupal\views\ViewStorageInterface;
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/**
 * Stores UI related temporary settings.
 */
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class ViewUI implements ViewStorageInterface {
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  /**
   * Indicates if a view is currently being edited.
   *
   * @var bool
   */
  public $editing = FALSE;

  /**
   * Stores an array of displays that have been changed.
   *
   * @var array
   */
  public $changed_display;

  /**
   * How long the view takes to build.
   *
   * @var int
   */
  public $build_time;

  /**
   * How long the view takes to render.
   *
   * @var int
   */
  public $render_time;

  /**
   * How long the view takes to execute.
   *
   * @var int
   */
  public $execute_time;

  /**
   * If this view is locked for editing.
   *
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   * If this view is locked it will contain the result of
   * \Drupal\user\TempStore::getMetadata(). Which can be a stdClass or NULL.
   *
   * @var stdClass
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   */
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  public $lock;
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  /**
   * If this view has been changed.
   *
   * @var bool
   */
  public $changed;

  /**
   * Stores options temporarily while editing.
   *
   * @var array
   */
  public $temporary_options;

  /**
   * Stores a stack of UI forms to display.
   *
   * @var array
   */
  public $stack;

  /**
   * Is the view runned in a context of the preview in the admin interface.
   *
   * @var bool
   */
  public $live_preview;
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  public $renderPreview = FALSE;
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  /**
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   * The View storage object.
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   *
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   * @var \Drupal\views\ViewStorageInterface
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   */
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  protected $storage;
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  /**
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   * The View executable object.
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   *
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   * @var \Drupal\views\ViewExecutable
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   */
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  protected $executable;
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  /**
   * Stores a list of database queries run beside the main one from views.
   *
   * @var array
   *
   * @see \Drupal\Core\Database\Log
   */
  protected $additionalQueries;

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  /**
   * Contains an array of form keys and their respective classes.
   *
   * @var array
   */
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  public static $forms = array(
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    'add-handler' => '\Drupal\views_ui\Form\Ajax\AddItem',
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    'analyze' => '\Drupal\views_ui\Form\Ajax\Analyze',
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    'handler' => '\Drupal\views_ui\Form\Ajax\ConfigHandler',
    'handler-extra' => '\Drupal\views_ui\Form\Ajax\ConfigHandlerExtra',
    'handler-group' => '\Drupal\views_ui\Form\Ajax\ConfigHandlerGroup',
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    'display' => '\Drupal\views_ui\Form\Ajax\Display',
    'edit-details' => '\Drupal\views_ui\Form\Ajax\EditDetails',
    'rearrange' => '\Drupal\views_ui\Form\Ajax\Rearrange',
    'rearrange-filter' => '\Drupal\views_ui\Form\Ajax\RearrangeFilter',
    'reorder-displays' => '\Drupal\views_ui\Form\Ajax\ReorderDisplays',
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  );

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  /**
   * Whether the config is being created, updated or deleted through the
   * import process.
   *
   * @var bool
   */
  private $isSyncing = FALSE;

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  /**
   * Whether the config is being deleted through the uninstall process.
   *
   * @var bool
   */
  private $isUninstalling = FALSE;

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  /**
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   * Constructs a View UI object.
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   *
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   * @param \Drupal\views\ViewStorageInterface $storage
   *   The View storage object to wrap.
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   */
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  public function __construct(ViewStorageInterface $storage, ViewExecutable $executable = NULL) {
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    $this->entityType = 'view';
    $this->storage = $storage;
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    if (!isset($executable)) {
      $executable = Views::executableFactory()->get($this);
    }
    $this->executable = $executable;
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  }

  /**
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   * Overrides \Drupal\Core\Config\Entity\ConfigEntityBase::get().
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   */
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  public function get($property_name, $langcode = NULL) {
    if (property_exists($this->storage, $property_name)) {
      return $this->storage->get($property_name, $langcode);
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    }

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    return isset($this->{$property_name}) ? $this->{$property_name} : NULL;
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  }

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  /**
   * Implements \Drupal\Core\Config\Entity\ConfigEntityInterface::setStatus().
   */
  public function setStatus($status) {
    return $this->storage->setStatus($status);
  }

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  /**
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   * Overrides \Drupal\Core\Config\Entity\ConfigEntityBase::set().
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   */
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  public function set($property_name, $value, $notify = TRUE) {
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    if (property_exists($this->storage, $property_name)) {
      $this->storage->set($property_name, $value);
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    }
    else {
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      $this->{$property_name} = $value;
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    }
  }

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  public static function getDefaultAJAXMessage() {
    return '<div class="message">' . t("Click on an item to edit that item's details.") . '</div>';
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  }

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  /**
   * {@inheritdoc}
   */
  public function setSyncing($syncing) {
    $this->isSyncing = $syncing;
  }

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  /**
   * {@inheritdoc}
   */
  public function setUninstalling($isUninstalling) {
    $this->isUninstalling = $isUninstalling;
  }

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  /**
   * {@inheritdoc}
   */
  public function isSyncing() {
    return $this->isSyncing;
  }

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  /**
   * {@inheritdoc}
   */
  public function isUninstalling() {
    return $this->isUninstalling;
  }

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  /**
   * Basic submit handler applicable to all 'standard' forms.
   *
   * This submit handler determines whether the user wants the submitted changes
   * to apply to the default display or to the current display, and dispatches
   * control appropriately.
   */
  public function standardSubmit($form, &$form_state) {
    // Determine whether the values the user entered are intended to apply to
    // the current display or the default display.

    list($was_defaulted, $is_defaulted, $revert) = $this->getOverrideValues($form, $form_state);

    // Based on the user's choice in the display dropdown, determine which display
    // these changes apply to.
    if ($revert) {
      // If it's revert just change the override and return.
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      $display = &$this->executable->displayHandlers->get($form_state['display_id']);
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      $display->optionsOverride($form, $form_state);

      // Don't execute the normal submit handling but still store the changed view into cache.
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      $this->cacheSet();
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      return;
    }
    elseif ($was_defaulted === $is_defaulted) {
      // We're not changing which display these form values apply to.
      // Run the regular submit handler for this form.
    }
    elseif ($was_defaulted && !$is_defaulted) {
      // We were using the default display's values, but we're now overriding
      // the default display and saving values specific to this display.
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      $display = &$this->executable->displayHandlers->get($form_state['display_id']);
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      // optionsOverride toggles the override of this section.
      $display->optionsOverride($form, $form_state);
      $display->submitOptionsForm($form, $form_state);
    }
    elseif (!$was_defaulted && $is_defaulted) {
      // We used to have an override for this display, but the user now wants
      // to go back to the default display.
      // Overwrite the default display with the current form values, and make
      // the current display use the new default values.
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      $display = &$this->executable->displayHandlers->get($form_state['display_id']);
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      // optionsOverride toggles the override of this section.
      $display->optionsOverride($form, $form_state);
      $display->submitOptionsForm($form, $form_state);
    }

    $submit_handler = $form['#form_id'] . '_submit';
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    if (isset($form_state['build_info']['callback_object'])) {
      $submit_handler = array($form_state['build_info']['callback_object'], 'submitForm');
    }
    if (is_callable($submit_handler)) {
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      // The submit handler might be a function or a method on the
      // callback_object. Additional note that we have to pass the parameters
      // by reference, as php 5.4 requires us to do that.
      call_user_func_array($submit_handler, array(&$form, &$form_state));
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    }
  }

  /**
   * Submit handler for cancel button
   */
  public function standardCancel($form, &$form_state) {
    if (!empty($this->changed) && isset($this->form_cache)) {
      unset($this->form_cache);
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      $this->cacheSet();
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    }

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    $form_state['redirect_route'] = $this->urlInfo('edit-form');
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  }

  /**
   * Provide a standard set of Apply/Cancel/OK buttons for the forms. Also provide
   * a hidden op operator because the forms plugin doesn't seem to properly
   * provide which button was clicked.
   *
   * TODO: Is the hidden op operator still here somewhere, or is that part of the
   * docblock outdated?
   */
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  public function getStandardButtons(&$form, &$form_state, $form_id, $name = NULL) {
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    $form['actions'] = array(
      '#type' => 'actions',
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    );

    if (empty($name)) {
      $name = t('Apply');
      if (!empty($this->stack) && count($this->stack) > 1) {
        $name = t('Apply and continue');
      }
      $names = array(t('Apply'), t('Apply and continue'));
    }

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    // Views provides its own custom handling of AJAX form submissions. Usually
    // this happens at the same path, but custom paths may be specified in
    // $form_state.
    $form_path = empty($form_state['path']) ? current_path() : $form_state['path'];

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    // Forms that are purely informational set an ok_button flag, so we know not
    // to create an "Apply" button for them.
    if (empty($form_state['ok_button'])) {
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      $form['actions']['submit'] = array(
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        '#type' => 'submit',
        '#value' => $name,
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        '#id' => 'edit-submit-' . drupal_html_id($form_id),
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        // The regular submit handler ($form_id . '_submit') does not apply if
        // we're updating the default display. It does apply if we're updating
        // the current display. Since we have no way of knowing at this point
        // which display the user wants to update, views_ui_standard_submit will
        // take care of running the regular submit handler as appropriate.
        '#submit' => array(array($this, 'standardSubmit')),
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        '#button_type' => 'primary',
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        '#ajax' => array(
          'path' => $form_path,
        ),
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      );
      // Form API button click detection requires the button's #value to be the
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      // same between the form build of the initial page request, and the
      // initial form build of the request processing the form submission.
      // Ideally, the button's #value shouldn't change until the form rebuild
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      // step. However, \Drupal\views_ui\Form\Ajax\ViewsFormBase::getForm()
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      // implements a different multistep form workflow than the Form API does,
      // and adjusts $view->stack prior to form processing, so we compensate by
      // extending button click detection code to support any of the possible
      // button labels.
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      if (isset($names)) {
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        $form['actions']['submit']['#values'] = $names;
        $form['actions']['submit']['#process'] = array_merge(array('views_ui_form_button_was_clicked'), element_info_property($form['actions']['submit']['#type'], '#process', array()));
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      }
      // If a validation handler exists for the form, assign it to this button.
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      if (isset($form_state['build_info']['callback_object'])) {
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        $form['actions']['submit']['#validate'][] = array($form_state['build_info']['callback_object'], 'validateForm');
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      }
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      if (function_exists($form_id . '_validate')) {
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        $form['actions']['submit']['#validate'][] = $form_id . '_validate';
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      }
    }

    // Create a "Cancel" button. For purely informational forms, label it "OK".
    $cancel_submit = function_exists($form_id . '_cancel') ? $form_id . '_cancel' : array($this, 'standardCancel');
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    $form['actions']['cancel'] = array(
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      '#type' => 'submit',
      '#value' => empty($form_state['ok_button']) ? t('Cancel') : t('Ok'),
      '#submit' => array($cancel_submit),
      '#validate' => array(),
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      '#ajax' => array(
        'path' => $form_path,
      ),
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      '#limit_validation_errors' => array(),
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    );

    // Compatibility, to be removed later: // TODO: When is "later"?
    // We used to set these items on the form, but now we want them on the $form_state:
    if (isset($form['#title'])) {
      $form_state['title'] = $form['#title'];
    }
    if (isset($form['#section'])) {
      $form_state['#section'] = $form['#section'];
    }
    // Finally, we never want these cached -- our object cache does that for us.
    $form['#no_cache'] = TRUE;
  }

  /**
   * Return the was_defaulted, is_defaulted and revert state of a form.
   */
  public function getOverrideValues($form, $form_state) {
    // Make sure the dropdown exists in the first place.
    if (isset($form_state['values']['override']['dropdown'])) {
      // #default_value is used to determine whether it was the default value or not.
      // So the available options are: $display, 'default' and 'default_revert', not 'defaults'.
      $was_defaulted = ($form['override']['dropdown']['#default_value'] === 'defaults');
      $is_defaulted = ($form_state['values']['override']['dropdown'] === 'default');
      $revert = ($form_state['values']['override']['dropdown'] === 'default_revert');

      if ($was_defaulted !== $is_defaulted && isset($form['#section'])) {
        // We're changing which display these values apply to.
        // Update the #section so it knows what to mark changed.
        $form['#section'] = str_replace('default-', $form_state['display_id'] . '-', $form['#section']);
      }
    }
    else {
      // The user didn't get the dropdown for overriding the default display.
      $was_defaulted = FALSE;
      $is_defaulted = FALSE;
      $revert = FALSE;
    }

    return array($was_defaulted, $is_defaulted, $revert);
  }

  /**
   * Add another form to the stack; clicking 'apply' will go to this form
   * rather than closing the ajax popup.
   */
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  public function addFormToStack($key, $display_id, $type, $id = NULL, $top = FALSE, $rebuild_keys = FALSE) {
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    // Reset the cache of IDs. Drupal rather aggressively prevents ID
    // duplication but this causes it to remember IDs that are no longer even
    // being used.
    $seen_ids_init = &drupal_static('drupal_html_id:init');
    $seen_ids_init = array();

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    if (empty($this->stack)) {
      $this->stack = array();
    }

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    $stack = array(implode('-', array_filter(array($key, $this->id(), $display_id, $type, $id))), $key, $display_id, $type, $id);
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    // If we're being asked to add this form to the bottom of the stack, no
    // special logic is required. Our work is equally easy if we were asked to add
    // to the top of the stack, but there's nothing in it yet.
    if (!$top || empty($this->stack)) {
      $this->stack[] = $stack;
    }
    // If we're adding to the top of an existing stack, we have to maintain the
    // existing integer keys, so they can be used for the "2 of 3" progress
    // indicator (which will now read "2 of 4").
    else {
      $keys = array_keys($this->stack);
      $first = current($keys);
      $last = end($keys);
      for ($i = $last; $i >= $first; $i--) {
        if (!isset($this->stack[$i])) {
          continue;
        }
        // Move form number $i to the next position in the stack.
        $this->stack[$i + 1] = $this->stack[$i];
        unset($this->stack[$i]);
      }
      // Now that the previously $first slot is free, move the new form into it.
      $this->stack[$first] = $stack;
      ksort($this->stack);

      // Start the keys from 0 again, if requested.
      if ($rebuild_keys) {
        $this->stack = array_values($this->stack);
      }
    }
  }

  /**
   * Submit handler for adding new item(s) to a view.
   */
  public function submitItemAdd($form, &$form_state) {
    $type = $form_state['type'];
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    $types = ViewExecutable::getHandlerTypes();
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    $section = $types[$type]['plural'];

    // Handle the override select.
    list($was_defaulted, $is_defaulted) = $this->getOverrideValues($form, $form_state);
    if ($was_defaulted && !$is_defaulted) {
      // We were using the default display's values, but we're now overriding
      // the default display and saving values specific to this display.
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      $display = &$this->executable->displayHandlers->get($form_state['display_id']);
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      // setOverride toggles the override of this section.
      $display->setOverride($section);
    }
    elseif (!$was_defaulted && $is_defaulted) {
      // We used to have an override for this display, but the user now wants
      // to go back to the default display.
      // Overwrite the default display with the current form values, and make
      // the current display use the new default values.
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      $display = &$this->executable->displayHandlers->get($form_state['display_id']);
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      // optionsOverride toggles the override of this section.
      $display->setOverride($section);
    }

    if (!empty($form_state['values']['name']) && is_array($form_state['values']['name'])) {
      // Loop through each of the items that were checked and add them to the view.
      foreach (array_keys(array_filter($form_state['values']['name'])) as $field) {
        list($table, $field) = explode('.', $field, 2);

        if ($cut = strpos($field, '$')) {
          $field = substr($field, 0, $cut);
        }
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        $id = $this->executable->addHandler($form_state['display_id'], $type, $table, $field);
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        // check to see if we have group by settings
        $key = $type;
        // Footer,header and empty text have a different internal handler type(area).
        if (isset($types[$type]['type'])) {
          $key = $types[$type]['type'];
        }
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        $item = array(
          'table' => $table,
          'field' => $field,
        );
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        $handler = Views::handlerManager($key)->getHandler($item);
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        if ($this->executable->displayHandlers->get('default')->useGroupBy() && $handler->usesGroupBy()) {
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          $this->addFormToStack('handler-group', $form_state['display_id'], $type, $id);
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        }

        // check to see if this type has settings, if so add the settings form first
        if ($handler && $handler->hasExtraOptions()) {
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          $this->addFormToStack('handler-extra', $form_state['display_id'], $type, $id);
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        }
        // Then add the form to the stack
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        $this->addFormToStack('handler', $form_state['display_id'], $type, $id);
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      }
    }

    if (isset($this->form_cache)) {
      unset($this->form_cache);
    }

    // Store in cache
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    $this->cacheSet();
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  }

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  /**
   * Set up query capturing.
   *
   * \Drupal\Core\Database\Database stores the queries that it runs, if logging
   * is enabled.
   *
   * @see ViewUI::endQueryCapture()
   */
  public function startQueryCapture() {
    Database::startLog('views');
  }

  /**
   * Add the list of queries run during render to buildinfo.
   *
   * @see ViewUI::startQueryCapture()
   */
  public function endQueryCapture() {
    $queries = Database::getLog('views');

    $this->additionalQueries = $queries;
  }

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  public function renderPreview($display_id, $args = array()) {
    // Save the current path so it can be restored before returning from this function.
    $old_q = current_path();

    // Determine where the query and performance statistics should be output.
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    $config = \Drupal::config('views.settings');
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    $show_query = $config->get('ui.show.sql_query.enabled');
    $show_info = $config->get('ui.show.preview_information');
    $show_location = $config->get('ui.show.sql_query.where');

    $show_stats = $config->get('ui.show.performance_statistics');
    if ($show_stats) {
      $show_stats = $config->get('ui.show.sql_query.where');
    }

    $combined = $show_query && $show_stats;

    $rows = array('query' => array(), 'statistics' => array());
    $output = '';

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    $errors = $this->executable->validate();
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    $this->executable->destroy();
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    if (empty($errors)) {
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      $this->ajax = TRUE;
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      $this->executable->live_preview = TRUE;
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      $this->views_ui_context = TRUE;

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      // AJAX happens via HTTP POST but everything expects exposed data to
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      // be in GET. Copy stuff but remove ajax-framework specific keys.
      // If we're clicking on links in a preview, though, we could actually
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      // have some input in the query parameters, so we merge request() and
      // query() to ensure we get it all.
      $exposed_input = array_merge(\Drupal::request()->request->all(), \Drupal::request()->query->all());
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      foreach (array('view_name', 'view_display_id', 'view_args', 'view_path', 'view_dom_id', 'pager_element', 'view_base_path', 'ajax_html_ids', 'ajax_page_state', 'form_id', 'form_build_id', 'form_token') as $key) {
        if (isset($exposed_input[$key])) {
          unset($exposed_input[$key]);
        }
      }
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      $this->executable->setExposedInput($exposed_input);
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      if (!$this->executable->setDisplay($display_id)) {
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        return t('Invalid display id @display', array('@display' => $display_id));
      }

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      $this->executable->setArguments($args);
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      // Store the current view URL for later use:
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      if ($this->executable->display_handler->getOption('path')) {
        $path = $this->executable->getUrl();
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      }

      // Make view links come back to preview.
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      $this->override_path = 'admin/structure/views/view/' . $this->id() . '/preview/' . $display_id;
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      // Also override the current path so we get the pager.
      $original_path = current_path();
      $q = _current_path($this->override_path);
      if ($args) {
        $q .= '/' . implode('/', $args);
        _current_path($q);
      }

      // Suppress contextual links of entities within the result set during a
      // Preview.
      // @todo We'll want to add contextual links specific to editing the View, so
      //   the suppression may need to be moved deeper into the Preview pipeline.
      views_ui_contextual_links_suppress_push();
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      $show_additional_queries = $config->get('ui.show.additional_queries');

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      Timer::start('views_ui.preview');
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      if ($show_additional_queries) {
        $this->startQueryCapture();
      }

      // Execute/get the view preview.
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      $preview = $this->executable->preview($display_id, $args);
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      $preview = drupal_render($preview);
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      if ($show_additional_queries) {
        $this->endQueryCapture();
      }

650
      $this->render_time = Timer::stop('views_ui.preview');
651

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      views_ui_contextual_links_suppress_pop();

      // Reset variables.
      unset($this->override_path);
      _current_path($original_path);

      // Prepare the query information and statistics to show either above or
      // below the view preview.
      if ($show_info || $show_query || $show_stats) {
        // Get information from the preview for display.
662
        if (!empty($this->executable->build_info['query'])) {
663
          if ($show_query) {
664
            $query_string = $this->executable->build_info['query'];
665 666 667
            // Only the sql default class has a method getArguments.
            $quoted = array();

668
            if ($this->executable->query instanceof Sql) {
669
              $quoted = $query_string->getArguments();
670 671 672 673 674 675 676 677 678 679
              $connection = Database::getConnection();
              foreach ($quoted as $key => $val) {
                if (is_array($val)) {
                  $quoted[$key] = implode(', ', array_map(array($connection, 'quote'), $val));
                }
                else {
                  $quoted[$key] = $connection->quote($val);
                }
              }
            }
680
            $rows['query'][] = array('<strong>' . t('Query') . '</strong>', '<pre>' . String::checkPlain(strtr($query_string, $quoted)) . '</pre>');
681
            if (!empty($this->additionalQueries)) {
682
              $queries = '<strong>' . t('These queries were run during view rendering:') . '</strong>';
683
              foreach ($this->additionalQueries as $query) {
684 685 686
                if ($queries) {
                  $queries .= "\n";
                }
687 688
                $query_string = strtr($query['query'], $query['args']);
                $queries .= t('[@time ms] @query', array('@time' => round($query['time'] * 100000, 1) / 100000.0, '@query' => $query_string));
689 690 691 692 693 694
              }

              $rows['query'][] = array('<strong>' . t('Other queries') . '</strong>', '<pre>' . $queries . '</pre>');
            }
          }
          if ($show_info) {
695
            $rows['query'][] = array('<strong>' . t('Title') . '</strong>', Xss::filterAdmin($this->executable->getTitle()));
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            if (isset($path)) {
              $path = l($path, $path);
            }
            else {
              $path = t('This display has no path.');
            }
            $rows['query'][] = array('<strong>' . t('Path') . '</strong>', $path);
          }

          if ($show_stats) {
706 707 708
            $rows['statistics'][] = array('<strong>' . t('Query build time') . '</strong>', t('@time ms', array('@time' => intval($this->executable->build_time * 100000) / 100)));
            $rows['statistics'][] = array('<strong>' . t('Query execute time') . '</strong>', t('@time ms', array('@time' => intval($this->executable->execute_time * 100000) / 100)));
            $rows['statistics'][] = array('<strong>' . t('View render time') . '</strong>', t('@time ms', array('@time' => intval($this->executable->render_time * 100000) / 100)));
709 710

          }
711
          \Drupal::moduleHandler()->alter('views_preview_info', $rows, $this);
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        }
        else {
          // No query was run. Display that information in place of either the
          // query or the performance statistics, whichever comes first.
          if ($combined || ($show_location === 'above')) {
            $rows['query'] = array(array('<strong>' . t('Query') . '</strong>', t('No query was run')));
          }
          else {
            $rows['statistics'] = array(array('<strong>' . t('Query') . '</strong>', t('No query was run')));
          }
        }
      }
    }
    else {
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      foreach ($errors as $display_errors) {
        foreach ($display_errors as $error) {
          drupal_set_message($error, 'error');
        }
730 731 732 733 734 735
      }
      $preview = t('Unable to preview due to validation errors.');
    }

    // Assemble the preview, the query info, and the query statistics in the
    // requested order.
736
    $table = array(
737
      '#type' => 'table',
738 739 740 741
      '#prefix' => '<div class="views-query-info">',
      '#suffix' => '</div>',
    );
    if ($show_location === 'above' || $show_location === 'below') {
742
      if ($combined) {
743
        $table['#rows'] = array_merge($rows['query'], $rows['statistics']);
744 745
      }
      else {
746
        $table['#rows'] = $rows['query'];
747 748
      }
    }
749 750
    elseif ($show_stats === 'above' || $show_stats === 'below') {
      $table['#rows'] = $rows['statistics'];
751 752
    }

753 754
    if ($show_location === 'above' || $show_stats === 'above') {
      $output .= drupal_render($table) . $preview;
755
    }
756 757
    elseif ($show_location === 'below' || $show_stats === 'below') {
      $output .= $preview . drupal_render($table);
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    }

    _current_path($old_q);
    return $output;
  }

  /**
   * Get the user's current progress through the form stack.
   *
   * @return
   *   FALSE if the user is not currently in a multiple-form stack. Otherwise,
   *   an associative array with the following keys:
   *   - current: The number of the current form on the stack.
   *   - total: The total number of forms originally on the stack.
   */
  public function getFormProgress() {
    $progress = FALSE;
    if (!empty($this->stack)) {
      // The forms on the stack have integer keys that don't change as the forms
      // are completed, so we can see which ones are still left.
      $keys = array_keys($this->stack);
      // Add 1 to the array keys for the benefit of humans, who start counting
      // from 1 and not 0.
      $current = reset($keys) + 1;
      $total = end($keys) + 1;
      if ($total > 1) {
        $progress = array();
        $progress['current'] = $current;
        $progress['total'] = $total;
      }
    }
    return $progress;
  }

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  /**
   * Sets a cached view object in the user tempstore.
   */
  public function cacheSet() {
    if ($this->isLocked()) {
      drupal_set_message(t('Changes cannot be made to a locked view.'), 'error');
      return;
    }

    // Let any future object know that this view has changed.
    $this->changed = TRUE;

804
    $executable = $this->getExecutable();
805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825
    if (isset($executable->current_display)) {
      // Add the knowledge of the changed display, too.
      $this->changed_display[$executable->current_display] = TRUE;
      unset($executable->current_display);
    }

    // Unset handlers; we don't want to write these into the cache.
    unset($executable->display_handler);
    unset($executable->default_display);
    $executable->query = NULL;
    unset($executable->displayHandlers);
    \Drupal::service('user.tempstore')->get('views')->set($this->id(), $this);
  }

  /**
   * Returns whether the current view is locked.
   *
   * @return bool
   *   TRUE if the view is locked, FALSE otherwise.
   */
  public function isLocked() {
826
    return is_object($this->lock) && ($this->lock->owner != \Drupal::currentUser()->id());
827 828
  }

829
  /**
830 831 832 833 834 835
   * Passes through all unknown calls onto the storage object.
   */
  public function __call($method, $args) {
    return call_user_func_array(array($this->storage, $method), $args);
  }

836 837 838 839 840 841 842
  /**
   * {@inheritdoc}
   */
  public function &getDisplay($display_id) {
    return $this->storage->getDisplay($display_id);
  }

843 844 845 846
  /**
   * Implements \Drupal\Core\Entity\EntityInterface::id().
   */
  public function id() {
847
    return $this->storage->id();
848 849 850 851 852 853
  }

  /**
   * Implements \Drupal\Core\Entity\EntityInterface::uuid().
   */
  public function uuid() {
854
    return $this->storage->uuid();
855 856 857 858 859 860
  }

  /**
   * Implements \Drupal\Core\Entity\EntityInterface::isNew().
   */
  public function isNew() {
861
    return $this->storage->isNew();
862 863 864
  }

  /**
865
   * {@inheritdoc}
866
   */
867 868
  public function getEntityTypeId() {
    return $this->storage->getEntityTypeId();
869 870 871 872 873 874
  }

  /**
   * Implements \Drupal\Core\Entity\EntityInterface::bundle().
   */
  public function bundle() {
875
    return $this->storage->bundle();
876 877 878
  }

  /**
879
   * {@inheritdoc}
880
   */
881 882
  public function getEntityType() {
    return $this->storage->getEntityType();
883 884 885 886 887 888
  }

  /**
   * Implements \Drupal\Core\Entity\EntityInterface::createDuplicate().
   */
  public function createDuplicate() {
889
    return $this->storage->createDuplicate();
890 891 892 893 894 895
  }

  /**
   * Implements \Drupal\Core\Entity\EntityInterface::delete().
   */
  public function delete() {
896
    return $this->storage->delete();
897 898 899 900 901 902
  }

  /**
   * Implements \Drupal\Core\Entity\EntityInterface::save().
   */
  public function save() {
903
    return $this->storage->save();
904 905 906 907 908
  }

  /**
   * Implements \Drupal\Core\Entity\EntityInterface::uri().
   */
909 910 911 912 913 914 915 916 917
  public function urlInfo($rel = 'edit-form') {
    return $this->storage->urlInfo($rel);
  }

  /**
   * {@inheritdoc}
   */
  public function getSystemPath($rel = 'edit-form') {
    return $this->storage->getSystemPath($rel);
918 919 920 921 922
  }

  /**
   * Implements \Drupal\Core\Entity\EntityInterface::label().
   */
923 924
  public function label() {
    return $this->storage->label();
925 926 927 928 929 930
  }

  /**
   * Implements \Drupal\Core\Entity\EntityInterface::enforceIsNew().
   */
  public function enforceIsNew($value = TRUE) {
931
    return $this->storage->enforceIsNew($value);
932 933
  }

934
  /**
935
   * {@inheritdoc}
936
   */
937 938
  public function toArray() {
    return $this->storage->toArray();
939 940
  }

941 942

  /**
943
   * {@inheritdoc}
944 945
   */
  public function language() {
946
    return $this->storage->language();
947 948 949
  }

  /**
950
   * {@inheritdoc}
951
   */
952
  public function access($operation = 'view', AccountInterface $account = NULL) {
953
    return $this->storage->access($operation, $account);
954 955 956
  }

  /**
957
   * Implements \Drupal\Core\Config\Entity\ConfigEntityInterface::enable().
958 959
   */
  public function enable() {
960
    return $this->storage->enable();
961 962 963
  }

  /**
964
   * Implements \Drupal\Core\Config\Entity\ConfigEntityInterface::disable().
965 966
   */
  public function disable() {
967
    return $this->storage->disable();
968 969 970
  }

  /**
971
   * Implements \Drupal\Core\Config\Entity\ConfigEntityInterface::status().
972
   */
973
  public function status() {
974
    return $this->storage->status();
975 976 977
  }

  /**
978
   * {@inheritdoc}
979
   */
980 981
  public function getOriginalId() {
    return $this->storage->getOriginalId();
982 983 984
  }

  /**
985
   * {@inheritdoc}
986
   */
987 988
  public function setOriginalId($id) {
    return $this->storage->setOriginalId($id);
989 990
  }

991 992 993 994
  /**
   * Implements \Drupal\Core\Entity\EntityInterface::isTranslatable().
   */
  public function isTranslatable() {
995
    return $this->storage->isTranslatable();
996 997
  }

998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032
  /**
   * {@inheritdoc}
   */
  public function getUntranslated() {
    return $this->storage->getUntranslated();
  }

  /**
   * {@inheritdoc}
   */
  public function hasTranslation($langcode) {
    return $this->storage->hasTranslation($langcode);
  }

  /**
   * {@inheritdoc}
   */
  public function addTranslation($langcode, array $values = array()) {
    return $this->storage->addTranslation($langcode, $values);
  }

  /**
   * {@inheritdoc}
   */
  public function removeTranslation($langcode) {
    $this->storage->removeTranslation($langcode);
  }

  /**
   * {@inheritdoc}
   */
  public function initTranslation($langcode) {
    $this->storage->initTranslation($langcode);
  }

1033
  /**
1034
   * Implements \Drupal\Core\TypedData\TypedDataInterface::getDataDefinition().
1035
   */
1036 1037
  public function getDataDefinition() {
    return $this->storage->getDataDefinition();
1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076
  }

  /**
   * Implements \Drupal\Core\TypedData\TypedDataInterface::getValue().
   */
  public function getValue() {
    return $this->storage->getValue();
  }

  /**
   * Implements \Drupal\Core\TypedData\TypedDataInterface::setValue().
   */
  public function setValue($value, $notify = TRUE) {
    return $this->storage->setValue($value, $notify);
  }

  /**
   * Implements \Drupal\Core\TypedData\TypedDataInterface::getString().
   */
  public function getString() {
    return $this->storage->getString();
  }

  /**
   * Implements \Drupal\Core\TypedData\TypedDataInterface::getConstraints().
   */
  public function getConstraints() {
    return $this->storage->getConstraints();
  }

  /**
   * Implements \Drupal\Core\TypedData\TypedDataInterface::validate().
   */
  public function validate() {
    return $this->storage->validate();
  }

  /**
   * Implements \Drupal\Core\TypedData\TypedDataInterface::getName().
1077 1078
   */
  public function getName() {
1079
    return $this->storage->getName();
1080 1081 1082
  }

  /**
1083
   * Implements \Drupal\Core\TypedData\TypedDataInterface::getRoot().
1084 1085
   */
  public function getRoot() {
1086
    return $this->storage->getRoot();
1087 1088 1089
  }

  /**
1090
   * Implements \Drupal\Core\TypedData\TypedDataInterface::getPropertyPath().
1091 1092
   */
  public function getPropertyPath() {
1093
    return $this->storage->getPropertyPath();
1094 1095 1096
  }

  /**
1097
   * Implements \Drupal\Core\TypedData\TypedDataInterface::getParent().
1098 1099
   */
  public function getParent() {
1100
    return $this->storage->getParent();
1101 1102 1103
  }

  /**
1104
   * Implements \Drupal\Core\TypedData\TypedDataInterface::setContext().
1105
   */
1106
  public function setContext($name = NULL, TypedDataInterface $parent = NULL) {
1107
    return $this->storage->setContext($name, $parent);
1108
  }
1109 1110 1111 1112 1113 1114 1115

  /**
   * Implements \Drupal\Core\TypedData\TypedDataInterface::onChange().
   */
  public function onChange($property_name) {
    $this->storage->onChange($property_name);
  }
1116

1117 1118 1119 1120 1121 1122 1123
  /**
   * {@inheritdoc}
   */
  public function applyDefaultValue($notify = TRUE) {
    return $this->storage->applyDefaultValue($notify);
  }

1124 1125 1126
  /**
   * {@inheritdoc}
   */
1127 1128
  public function preSave(EntityStorageInterface $storage) {
    $this->storage->presave($storage);
1129 1130 1131 1132 1133
  }

  /**
   * {@inheritdoc}
   */
1134 1135
  public function postSave(EntityStorageInterface $storage, $update = TRUE) {
    $this->storage->postSave($storage, $update);
1136 1137 1138 1139 1140
  }

  /**
   * {@inheritdoc}
   */
1141
  public static function preCreate(EntityStorageInterface $storage, array &$values) {
1142 1143
  }

1144 1145 1146
  /**
   * {@inheritdoc}
   */
1147 1148
  public function postCreate(EntityStorageInterface $storage) {
    $this->storage->postCreate($storage);
1149 1150 1151 1152 1153
  }

  /**
   * {@inheritdoc}
   */
1154
  public static function preDelete(EntityStorageInterface $storage, array $entities) {
1155
  }
1156

1157 1158 1159
  /**
   * {@inheritdoc}
   */
1160
  public static function postDelete(EntityStorageInterface $storage, array $entities) {
1161 1162 1163 1164 1165
  }

  /**
   * {@inheritdoc}
   */
1166
  public static function postLoad(EntityStorageInterface $storage, array &$entities) {
1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181
  }

  /**
   * {@inheritdoc}
   */
  public function mergeDefaultDisplaysOptions() {
    $this->storage->mergeDefaultDisplaysOptions();
  }

  /**
   * {@inheritdoc}
   */
  public function uriRelationships() {
    return $this->storage->uriRelationships();
  }
1182

1183 1184 1185 1186 1187 1188 1189
  /**
   * {@inheritdoc}
   */
   public function referencedEntities() {
     return $this->storage->referencedEntities();
   }

1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203
  /**
   * {@inheritdoc}
   */
  public function url($rel = 'edit-form', $options = array()) {
    return $this->storage->url($rel, $options);
  }

  /**
   * {@inheritdoc}
   */
  public function hasLinkTemplate($key) {
    return $this->storage->hasLinkTemplate($key);
  }

1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215
  /**
   * {@inheritdoc}
   */
  public function calculateDependencies() {
  }

  /**
   * {@inheritdoc}
   */
  public function getConfigDependencyName() {
  }

1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229
  /**
   * {@inheritdoc}
   */
  public function getCacheTag() {
    $this->storage->getCacheTag();
  }

  /**
   * {@inheritdoc}
   */
  public function getListCacheTags() {
    $this->storage->getListCacheTags();
  }

1230
}