Club Drupal

<?php

/**

 * @file

 * Provides the interface and base class for Views Wizard plugins.

 */

/**

 * Defines a common interface for Views Wizard plugins.

 */

interface ViewsWizardInterface {

  /**

   * Constructor.

   */

  function __construct($plugin);

  /**

   * For AJAX callbacks to build other elements in the "show" form.

   */

  function build_form($form, &$form_state);

  /**

   * Validate form and values.

   *

   * @return an array of form errors.

   */

  function validate($form, &$form_state);

  /**

   * Create a new View from form values.

   *

   * @return a view object.

   *

   * @throws ViewsWizardException in the event of a problem.

   */

  function create_view($form, &$form_state);

}

/**

 * A custom exception class for our errors.

 */

class ViewsWizardException extends Exception {

}

/**

 * A very generic Views Wizard class - can be constructed for any base table.

 */

class ViewsUiBaseViewsWizard implements ViewsWizardInterface {

  protected $base_table;

  protected $entity_type;

  protected $entity_info = array();

  protected $validated_views = array();

  protected $plugin = array();

  protected $filter_defaults = array(

    'id' => NULL,

    'expose' => array('operator' => FALSE),

    'group' => 1,

  );

  function __construct($plugin) {

    $this->base_table = $plugin['base_table'];

    $default = $this->filter_defaults;

    if (isset($plugin['filters'])) {

      foreach ($plugin['filters'] as $name => $info) {

        $default['id'] = $name;

        $plugin['filters'][$name] = $info + $default;

      }

    }

    $this->plugin = $plugin;

    $entities = entity_get_info();

    foreach ($entities as $entity_type => $entity_info) {

      if (isset($entity_info['base table']) && $this->base_table == $entity_info['base table']) {

        $this->entity_info = $entity_info;

        $this->entity_type = $entity_type;

      }

    }

  }

  function build_form($form, &$form_state) {

    $style_options = views_fetch_plugin_names('style', 'normal', array($this->base_table));

    $feed_row_options = views_fetch_plugin_names('row', 'feed', array($this->base_table));

    $path_prefix = url(NULL, array('absolute' => TRUE)) . (variable_get('clean_url', 0) ? '' : '?q=');

    // Add filters and sorts which apply to the view as a whole.

    $this->build_filters($form, $form_state);

    $this->build_sorts($form, $form_state);

    $form['displays']['page'] = array(

      '#type' => 'fieldset',

      '#attributes' => array('class' => array('views-attachment', 'fieldset-no-legend')),

      '#tree' => TRUE,

    );

    $form['displays']['page']['create'] = array(

      '#title' => t('Create a page'),

      '#type' => 'checkbox',

      '#attributes' => array('class' => array('strong')),

      '#default_value' => TRUE,

      '#id' => 'edit-page-create',

    );

    // All options for the page display are included in this container so they

    // can be hidden en masse when the "Create a page" checkbox is unchecked.

    $form['displays']['page']['options'] = array(

      '#type' => 'container',

      '#attributes' => array('class' => array('options-set')),

      '#dependency' => array(

        'edit-page-create' => array(1),

      ),

      '#pre_render' => array('ctools_dependent_pre_render'),

      '#prefix' => '<div><div id="edit-page-wrapper">',

      '#suffix' => '</div></div>',

      '#parents' => array('page'),

    );

    $form['displays']['page']['options']['title'] = array(

      '#title' => t('Page title'),

      '#type' => 'textfield',

    );

    $form['displays']['page']['options']['path'] = array(

      '#title' => t('Path'),

      '#type' => 'textfield',

      '#field_prefix' => $path_prefix,

    );

    $form['displays']['page']['options']['style'] = array(

      '#type' => 'fieldset',

      '#attributes' => array('class' => array('container-inline', 'fieldset-no-legend')),

    );

    // Create the dropdown for choosing the display format.

    $form['displays']['page']['options']['style']['style_plugin'] = array(

      '#title' => t('Display format'),

      '#help_topic' => 'style',

      '#type' => 'select',

      '#options' => $style_options,

    );

    $style_form = &$form['displays']['page']['options']['style'];

    $style_form['style_plugin']['#default_value'] = views_ui_get_selected($form_state, array('page', 'style', 'style_plugin'), 'default', $style_form['style_plugin']);

    // Changing this dropdown updates $form['displays']['page']['options'] via

    // AJAX.

    views_ui_add_ajax_trigger($style_form, 'style_plugin', array('displays', 'page', 'options'));

    $this->build_form_style($form, $form_state, 'page');

    $form['displays']['page']['options']['items_per_page'] = array(

      '#title' => t('Items to display'),

      '#type' => 'textfield',

      '#default_value' => '10',

      '#size' => 5,

      '#element_validate' => array('views_element_validate_integer'),

    );

    $form['displays']['page']['options']['pager'] = array(

      '#title' => t('Use a pager'),

      '#type' => 'checkbox',

      '#default_value' => TRUE,

    );

    $form['displays']['page']['options']['link'] = array(

      '#title' => t('Create a menu link'),

      '#type' => 'checkbox',

      '#id' => 'edit-page-link',

    );

    $form['displays']['page']['options']['link_properties'] = array(

      '#type' => 'container',

      '#dependency' => array(

        'edit-page-link' => array(1),

      ),

      '#pre_render' => array('ctools_dependent_pre_render'),

      '#prefix' => '<div id="edit-page-link-properties-wrapper">',

      '#suffix' => '</div>',

    );

    if (module_exists('menu')) {

      $menu_options = menu_get_menus();

    }

    else {

      // These are not yet translated.

      $menu_options = menu_list_system_menus();

      foreach ($menu_options as $name => $title) {

        $menu_options[$name] = t($title);

      }

    }

    $form['displays']['page']['options']['link_properties']['menu_name'] = array(

      '#title' => t('Menu'),

      '#type' => 'select',

      '#options' => $menu_options,

    );

    $form['displays']['page']['options']['link_properties']['title'] = array(

      '#title' => t('Link text'),

      '#type' => 'textfield',

    );

    // Only offer a feed if we have at least one available feed row style.

    if ($feed_row_options) {

      $form['displays']['page']['options']['feed'] = array(

        '#title' => t('Include an RSS feed'),

        '#type' => 'checkbox',

        '#id' => 'edit-page-feed',

      );

      $form['displays']['page']['options']['feed_properties'] = array(

        '#type' => 'container',

        '#dependency' => array(

          'edit-page-feed' => array(1),

        ),

        '#pre_render' => array('ctools_dependent_pre_render'),

        '#prefix' => '<div id="edit-page-feed-properties-wrapper">',

        '#suffix' => '</div>',

      );

      $form['displays']['page']['options']['feed_properties']['path'] = array(

        '#title' => t('Feed path'),

        '#type' => 'textfield',

        '#field_prefix' => $path_prefix,

      );

      // This will almost never be visible.

      $form['displays']['page']['options']['feed_properties']['row_plugin'] = array(

        '#title' => t('Feed row style'),

        '#type' => 'select',

        '#options' => $feed_row_options,

        '#default_value' => key($feed_row_options),

        '#access' => (count($feed_row_options) > 1),

        '#dependency' => array(

          'edit-page-feed' => array(1),

        ),

        '#pre_render' => array('ctools_dependent_pre_render'),

        '#prefix' => '<div id="edit-page-feed-properties-row-plugin-wrapper">',

        '#suffix' => '</div>',

      );

    }

    $form['displays']['block'] = array(

      '#type' => 'fieldset',

      '#attributes' => array('class' => array('views-attachment', 'fieldset-no-legend')),

      '#tree' => TRUE,

    );

    $form['displays']['block']['create'] = array(

      '#title' => t('Create a block'),

      '#type' => 'checkbox',

      '#attributes' => array('class' => array('strong')),

      '#id' => 'edit-block-create',

    );

    // All options for the block display are included in this container so they

    // can be hidden en masse when the "Create a block" checkbox is unchecked.

    $form['displays']['block']['options'] = array(

      '#type' => 'container',

      '#attributes' => array('class' => array('options-set')),

      '#dependency' => array(

        'edit-block-create' => array(1),

      ),

      '#pre_render' => array('ctools_dependent_pre_render'),

      '#prefix' => '<div id="edit-block-wrapper">',

      '#suffix' => '</div>',

      '#parents' => array('block'),

    );

    $form['displays']['block']['options']['title'] = array(

      '#title' => t('Block title'),

      '#type' => 'textfield',

    );

    $form['displays']['block']['options']['style'] = array(

      '#type' => 'fieldset',

      '#attributes' => array('class' => array('container-inline', 'fieldset-no-legend')),

    );

    // Create the dropdown for choosing the display format.

    $form['displays']['block']['options']['style']['style_plugin'] = array(

      '#title' => t('Display format'),

      '#help_topic' => 'style',

      '#type' => 'select',

      '#options' => $style_options,

    );

    $style_form = &$form['displays']['block']['options']['style'];

    $style_form['style_plugin']['#default_value'] = views_ui_get_selected($form_state, array('block', 'style', 'style_plugin'), 'default', $style_form['style_plugin']);

    // Changing this dropdown updates $form['displays']['block']['options'] via

    // AJAX.

    views_ui_add_ajax_trigger($style_form, 'style_plugin', array('displays', 'block', 'options'));

    $this->build_form_style($form, $form_state, 'block');

    $form['displays']['block']['options']['items_per_page'] = array(

      '#title' => t('Items per page'),

      '#type' => 'textfield',

      '#default_value' => '5',

      '#size' => 5,

      '#element_validate' => array('views_element_validate_integer'),

    );

    $form['displays']['block']['options']['pager'] = array(

      '#title' => t('Use a pager'),

      '#type' => 'checkbox',

      '#default_value' => FALSE,

    );

    return $form;

  }

  /**

   * Build the part of the form that builds the display format options.

   */

  protected function build_form_style(&$form, &$form_state, $type) {

    $style_form =& $form['displays'][$type]['options']['style'];

    $style = $style_form['style_plugin']['#default_value'];

    $style_plugin = views_get_plugin('style', $style);

    if (isset($style_plugin) && $style_plugin->uses_row_plugin()) {

      $options = $this->row_style_options($type);

      $style_form['row_plugin'] = array(

        '#type' => 'select',

        '#title' => t('of'),

        '#options' => $options,

        '#access' => count($options) > 1,

      );

      // For the block display, the default value should be "titles (linked)",

      // if it's available (since that's the most common use case).

      $block_with_linked_titles_available = ($type == 'block' && isset($options['titles_linked']));

      $default_value = $block_with_linked_titles_available ? 'titles_linked' : key($options);

      $style_form['row_plugin']['#default_value'] = views_ui_get_selected($form_state, array($type, 'style', 'row_plugin'), $default_value, $style_form['row_plugin']);

      // Changing this dropdown updates the individual row options via AJAX.

      views_ui_add_ajax_trigger($style_form, 'row_plugin', array('displays', $type, 'options', 'style', 'row_options'));

      // This is the region that can be updated by AJAX. The base class doesn't

      // add anything here, but child classes can.

      $style_form['row_options'] = array(

        '#theme_wrappers' => array('container'),

      );

    }

    elseif ($style_plugin->uses_fields()) {

      $style_form['row_plugin'] = array('#markup' => '<span>' . t('of fields') . '</span>');

    }

  }

  /**

   * Add possible row style options.

   *

   * Per default use fields with base field.

   */

  protected function row_style_options($type) {

    $data = views_fetch_data($this->base_table);

    // Get all available row plugins by default.

    $options = views_fetch_plugin_names('row', 'normal', array($this->base_table));

    return $options;

  }

  /**

   * Build the part of the form that allows the user to select the filters.

   *

   * By default, this adds "of type" and "tagged with" filters (when they are

   * available).

   */

  protected function build_filters(&$form, &$form_state) {

    // Find all the fields we are allowed to filter by.

    $fields = views_fetch_fields($this->base_table, 'filter');

    $entity_info = $this->entity_info;

    // If the current base table support bundles and has more than one (like

    // user).

    if (isset($entity_info['bundle keys']) && isset($entity_info['bundles'])) {

      // Get all bundles and their human readable names.

      $options = array('all' => t('All'));

      foreach ($entity_info['bundles'] as $type => $bundle) {

        $options[$type] = $bundle['label'];

      }

      $form['displays']['show']['type'] = array(

        '#type' => 'select',

        '#title' => t('of type'),

        '#options' => $options,

      );

      $selected_bundle = views_ui_get_selected($form_state, array('show', 'type'), 'all', $form['displays']['show']['type']);

      $form['displays']['show']['type']['#default_value'] = $selected_bundle;

      // Changing this dropdown updates the entire content of $form['displays']

      // via AJAX, since each bundle might have entirely different fields

      // attached to it, etc.

      views_ui_add_ajax_trigger($form['displays']['show'], 'type', array('displays'));

    }

    // Check if we are allowed to filter by taxonomy, and if so, add the

    // "tagged with" filter to the view.

    //

    // We construct this filter using taxonomy_index.tid (which limits the

    // filtering to a specific vocabulary) rather than taxonomy_term_data.name

    // (which matches terms in any vocabulary). This is because it is a more

    // commonly-used filter that works better with the autocomplete UI, and

    // also to avoid confusion with other vocabularies on the site that may

    // have terms with the same name but are not used for free tagging.

    //

    // The downside is that if there *is* more than one vocabulary on the site

    // that is used for free tagging, the wizard will only be able to make the

    // "tagged with" filter apply to one of them (see below for the method it

    // uses to choose).

    if (isset($fields['taxonomy_index.tid'])) {

      // Check if this view will be displaying fieldable entities.

      if (!empty($entity_info['fieldable'])) {

        // Find all "tag-like" taxonomy fields associated with the view's

        // entities. If a particular entity type (i.e., bundle) has been

        // selected above, then we only search for taxonomy fields associated

        // with that bundle. Otherwise, we use all bundles.

        $bundles = array_keys($entity_info['bundles']);

        // Double check that this is a real bundle before using it (since above

        // we added a dummy option 'all' to the bundle list on the form).

        if (isset($selected_bundle) && in_array($selected_bundle, $bundles)) {

          $bundles = array($selected_bundle);

        }

        $tag_fields = array();

        foreach ($bundles as $bundle) {

          foreach (field_info_instances($this->entity_type, $bundle) as $instance) {

            // We define "tag-like" taxonomy fields as ones that use the

            // "Autocomplete term widget (tagging)" widget.

            if ($instance['widget']['type'] == 'taxonomy_autocomplete') {

              $tag_fields[] = $instance['field_name'];

            }

          }

        }

        $tag_fields = array_unique($tag_fields);

        if (!empty($tag_fields)) {

          // If there is more than one "tag-like" taxonomy field available to

          // the view, we can only make our filter apply to one of them (as

          // described above). We choose 'field_tags' if it is available, since

          // that is created by the Standard install profile in core and also

          // commonly used by contrib modules; thus, it is most likely to be

          // associated with the "main" free-tagging vocabulary on the site.

          if (in_array('field_tags', $tag_fields)) {

            $tag_field_name = 'field_tags';

          }

          else {

            $tag_field_name = reset($tag_fields);

          }

          // Add the autocomplete textfield to the wizard.

          $form['displays']['show']['tagged_with'] = array(

            '#type' => 'textfield',

            '#title' => t('tagged with'),

            '#autocomplete_path' => 'taxonomy/autocomplete/' . $tag_field_name,

            '#size' => 30,

            '#maxlength' => 1024,

            '#field_name' => $tag_field_name,

            '#element_validate' => array('views_ui_taxonomy_autocomplete_validate'),

          );

        }

      }

    }

  }

  /**

   * Build the part of the form that allows the user to select the sort order.

   *

   * By default, this adds a "sorted by [date]" filter (when it is available).

   */

  protected function build_sorts(&$form, &$form_state) {

    $sorts = array(

      'none' => t('Unsorted'),

    );

    // Check if we are allowed to sort by creation date.

    if (!empty($this->plugin['created_column'])) {

      $sorts += array(

        $this->plugin['created_column'] . ':DESC' => t('Newest first'),

        $this->plugin['created_column'] . ':ASC' => t('Oldest first'),

      );

    }

    if (isset($this->plugin['available_sorts'])) {

      $sorts += $this->plugin['available_sorts'];

    }

    // If there is no sorts option available continue.

    if (!empty($sorts)) {

      $form['displays']['show']['sort'] = array(

        '#type' => 'select',

        '#title' => t('sorted by'),

        '#options' => $sorts,

        '#default_value' => isset($this->plugin['created_column']) ? $this->plugin['created_column'] . ':DESC' : 'none',

      );

    }

  }

  protected function instantiate_view($form, &$form_state) {

    // Build the basic view properties.

    $view = views_new_view();

    $view->name = $form_state['values']['name'];

    $view->human_name = $form_state['values']['human_name'];

    $view->description = $form_state['values']['description'];

    $view->tag = 'default';

    $view->core = VERSION;

    $view->base_table = $this->base_table;

    // Build all display options for this view.

    $display_options = $this->build_display_options($form, $form_state);

    // Allow the fully built options to be altered. This happens before adding

    // the options to the view, so that once they are eventually added we will

    // be able to get all the overrides correct.

    $this->alter_display_options($display_options, $form, $form_state);

    $this->add_displays($view, $display_options, $form, $form_state);

    return $view;

  }

  /**

   * Build an array of display options for the view.

   *

   * @return

   *   An array whose keys are the names of each display and whose values are

   *   arrays of options for that display.

   */

  protected function build_display_options($form, $form_state) {

    // Display: Master.

    $display_options['default'] = $this->default_display_options($form, $form_state);

    $display_options['default'] += array(

      'filters' => array(),

      'sorts' => array(),

    );

    $display_options['default']['filters'] += $this->default_display_filters($form, $form_state);

    $display_options['default']['sorts'] += $this->default_display_sorts($form, $form_state);

    // Display: Page.

    if (!empty($form_state['values']['page']['create'])) {

      $display_options['page'] = $this->page_display_options($form, $form_state);

      // Display: Feed (attached to the page).

      if (!empty($form_state['values']['page']['feed'])) {

        $display_options['feed'] = $this->page_feed_display_options($form, $form_state);

      }

    }

    // Display: Block.

    if (!empty($form_state['values']['block']['create'])) {

      $display_options['block'] = $this->block_display_options($form, $form_state);

    }

    return $display_options;

  }

  /**

   * Alter the full array of display options before they are added to the view.

   */

  protected function alter_display_options(&$display_options, $form, $form_state) {

    // If any of the displays use jump menus, we want to add fields to the view

    // that store the path that will be used in the jump menu. The fields to

    // use for this are defined by the plugin.

    if (isset($this->plugin['path_field'])) {

      $path_field = $this->plugin['path_field'];

      $path_fields_added = FALSE;

      foreach ($display_options as $display_type => $options) {

        if (!empty($options['style_plugin']) && $options['style_plugin'] == 'jump_menu') {

          // Regardless of how many displays have jump menus, we only need to

          // add a single set of path fields to the view.

          if (!$path_fields_added) {

            // The plugin might provide supplemental fields that it needs to

            // generate the path (for example, node revisions need the node ID

            // as well as the revision ID). We need to add these first so they

            // are available as replacement patterns in the main path field.

            $path_fields = !empty($this->plugin['path_fields_supplemental']) ? $this->plugin['path_fields_supplemental'] : array();

            $path_fields[] = &$path_field;

            // Generate a unique ID for each field so we don't overwrite

            // existing ones.

            foreach ($path_fields as &$field) {

              $field['id'] = view::generate_item_id($field['id'], $display_options['default']['fields']);

              $display_options['default']['fields'][$field['id']] = $field;

            }

            $path_fields_added = TRUE;

          }

          // Configure the style plugin to use the path field to generate the

          // jump menu path.

          $display_options[$display_type]['style_options']['path'] = $path_field['id'];

        }

      }

    }

    // If any of the displays use the table style, take sure that the fields

    // always have a labels by unsetting the override.

    foreach ($display_options as &$options) {

      if ($options['style_plugin'] == 'table') {

        foreach ($display_options['default']['fields'] as &$field) {

          unset($field['label']);

        }

      }

    }

  }

  /**

   * Add the array of display options to the view, with appropriate overrides.

   */

  protected function add_displays($view, $display_options, $form, $form_state) {

    // Display: Master.

    $default_display = $view->new_display('default', 'Master', 'default');

    foreach ($display_options['default'] as $option => $value) {

      $default_display->set_option($option, $value);

    }

    // Display: Page.

    if (isset($display_options['page'])) {

      $display = $view->new_display('page', 'Page', 'page');

      // The page display is usually the main one (from the user's point of

      // view). Its options should therefore become the overall view defaults,

      // so that new displays which are added later automatically inherit them.

      $this->set_default_options($display_options['page'], $display, $default_display);

      // Display: Feed (attached to the page).

      if (isset($display_options['feed'])) {

        $display = $view->new_display('feed', 'Feed', 'feed');

        $this->set_override_options($display_options['feed'], $display, $default_display);

      }

    }

    // Display: Block.

    if (isset($display_options['block'])) {

      $display = $view->new_display('block', 'Block', 'block');

      // When there is no page, the block display options should become the

      // overall view defaults.

      if (!isset($display_options['page'])) {

        $this->set_default_options($display_options['block'], $display, $default_display);

      }

      else {

        $this->set_override_options($display_options['block'], $display, $default_display);

      }

    }

  }

  /**

   * Most subclasses will need to override this method to provide some fields

   * or a different row plugin.

   */

  protected function default_display_options($form, $form_state) {

    $display_options = array();

    $display_options['access']['type'] = 'none';

    $display_options['cache']['type'] = 'none';

    $display_options['query']['type'] = 'views_query';

    $display_options['exposed_form']['type'] = 'basic';

    $display_options['pager']['type'] = 'full';

    $display_options['style_plugin'] = 'default';

    $display_options['row_plugin'] = 'fields';

    // Add a least one field so the view validates and the user has already a

    // preview. Therefore the basefield could provide 'defaults][field]' in

    // it's base settings. If there is nothing like this choose the first field

    // with a field handler.

    $data = views_fetch_data($this->base_table);

    if (isset($data['table']['base']['defaults']['field'])) {

      $field = $data['table']['base']['defaults']['field'];

    }

    else {

      foreach ($data as $field => $field_data) {

        if (isset($field_data['field']['handler'])) {

          break;

        }

      }

    }

    $display_options['fields'][$field] = array(

      'table' => $this->base_table,

      'field' => $field,

      'id' => $field,

    );

    return $display_options;

  }

  protected function default_display_filters($form, $form_state) {

    $filters = array();

    // Add any filters provided by the plugin.

    if (isset($this->plugin['filters'])) {

      foreach ($this->plugin['filters'] as $name => $info) {

        $filters[$name] = $info;

      }

    }

    // Add any filters specified by the user when filling out the wizard.

    $filters = array_merge($filters, $this->default_display_filters_user($form, $form_state));

    return $filters;

  }

  protected function default_display_filters_user($form, $form_state) {

    $filters = array();

    if (!empty($form_state['values']['show']['type']) && $form_state['values']['show']['type'] != 'all') {

      $bundle_key = $this->entity_info['bundle keys']['bundle'];

      // Figure out the table where $bundle_key lives. It may not be the same as

      // the base table for the view; the taxonomy vocabulary machine_name, for

      // example, is stored in taxonomy_vocabulary, not taxonomy_term_data.

      $fields = views_fetch_fields($this->base_table, 'filter');

      if (isset($fields[$this->base_table . '.' . $bundle_key])) {

        $table = $this->base_table;

      }

      else {

        foreach ($fields as $field_name => $value) {

          if ($pos = strpos($field_name, '.' . $bundle_key)) {

            $table = substr($field_name, 0, $pos);

            break;

          }

        }

      }

      $table_data = views_fetch_data($table);

      // Check whether the bundle key filter handler is or an child of it

      // views_handler_filter_in_operator. If it's not just use a single value

      // instead of an array.

      $handler = $table_data[$bundle_key]['filter']['handler'];

      if ($handler == 'views_handler_filter_in_operator' || is_subclass_of($handler, 'views_handler_filter_in_operator')) {

        $value = drupal_map_assoc(array($form_state['values']['show']['type']));

      }

      else {

        $value = $form_state['values']['show']['type'];

      }

      $filters[$bundle_key] = array(

        'id' => $bundle_key,

        'table' => $table,

        'field' => $bundle_key,

        'value' => $value,

      );

    }

    // @todo Figure out why this isn't part of node_views_wizard.

    if (!empty($form_state['values']['show']['tagged_with']['tids'])) {

      $filters['tid'] = array(

        'id' => 'tid',

        'table' => 'taxonomy_index',

        'field' => 'tid',

        'value' => $form_state['values']['show']['tagged_with']['tids'],

        'vocabulary' => $form_state['values']['show']['tagged_with']['vocabulary'],

      );

      // If the user entered more than one valid term in the autocomplete

      // field, they probably intended both of them to be applied.

      if (count($form_state['values']['show']['tagged_with']['tids']) > 1) {

        $filters['tid']['operator'] = 'and';

        // Sort the terms so the filter will be displayed as it normally would

        // on the edit screen.

        sort($filters['tid']['value']);

      }

    }

    return $filters;

  }

  protected function default_display_sorts($form, $form_state) {

    $sorts = array();

    // Add any sorts provided by the plugin.

    if (isset($this->plugin['sorts'])) {

      foreach ($this->plugin['sorts'] as $name => $info) {

        $sorts[$name] = $info;

      }

    }

    // Add any sorts specified by the user when filling out the wizard.

    $sorts = array_merge($sorts, $this->default_display_sorts_user($form, $form_state));

    return $sorts;

  }

  protected function default_display_sorts_user($form, $form_state) {

    $sorts = array();

    // Don't add a sort if there is no form value or the user selected none as

    // sort.

    if (!empty($form_state['values']['show']['sort']) && $form_state['values']['show']['sort'] != 'none') {

      list($column, $sort) = explode(':', $form_state['values']['show']['sort']);

      // Column either be a column-name or the table-columnn-ame.

      $column = explode('-', $column);

      if (count($column) > 1) {

        $table = $column[0];

        $column = $column[1];

      }

      else {

        $table = $this->base_table;

        $column = $column[0];

      }

      $sorts[$column] = array(

        'id' => $column,

        'table' => $table,

        'field' => $column,

        'order' => $sort,

      );

    }

    return $sorts;

  }

  protected function page_display_options($form, $form_state) {

    $display_options = array();

    $page = $form_state['values']['page'];

    $display_options['title'] = $page['title'];

    $display_options['path'] = $page['path'];

    $display_options['style_plugin'] = $page['style']['style_plugin'];

    // Not every style plugin supports row style plugins.

    $display_options['row_plugin'] = isset($page['style']['row_plugin']) ? $page['style']['row_plugin'] : 'fields';

    if (empty($page['items_per_page'])) {

      $display_options['pager']['type'] = 'none';

    }

    elseif ($page['pager']) {

      $display_options['pager']['type'] = 'full';

    }

    else {

      $display_options['pager']['type'] = 'some';

    }

    $display_options['pager']['options']['items_per_page'] = $page['items_per_page'];

    if (!empty($page['link'])) {

      $display_options['menu']['type'] = 'normal';

      $display_options['menu']['title'] = $page['link_properties']['title'];

      $display_options['menu']['name'] = $page['link_properties']['menu_name'];

    }

    return $display_options;

  }

  protected function block_display_options($form, $form_state) {

    $display_options = array();

    $block = $form_state['values']['block'];

    $display_options['title'] = $block['title'];

    $display_options['style_plugin'] = $block['style']['style_plugin'];

    $display_options['row_plugin'] = isset($block['style']['row_plugin']) ? $block['style']['row_plugin'] : 'fields';

    $display_options['pager']['type'] = $block['pager'] ? 'full' : (empty($block['items_per_page']) ? 'none' : 'some');