Club Drupal

<?php

/**

 * @file

 * Provide structure for the administrative interface to Views.

 */

/**

 * Implements hook_menu().

 */

function views_ui_menu() {

  $items = array();

  // Minor code reduction technique.

  $base = array(

    'access callback' => 'user_access',

    'access arguments' => array('administer views'),

    'file' => 'includes/admin.inc',

  );

  // Top-level Views module pages (not tied to a particular View).

  $items['admin/structure/views/add'] = array(

    'title' => 'Add new view',

    'page callback' => 'views_ui_add_page',

    'type' => MENU_LOCAL_ACTION,

  ) + $base;

  // Top-level Views module pages (not tied to a particular View).

  $items['admin/structure/views/add-template'] = array(

    'title' => 'Add view from template',

    'page callback' => 'views_ui_add_template_page',

    // Don't show a local action link if there aren't any templates.

    'type' => views_get_all_templates() ? MENU_LOCAL_ACTION : MENU_VISIBLE_IN_BREADCRUMB,

  ) + $base;

  $items['admin/structure/views/import'] = array(

    'title' => 'Import',

    'page callback' => 'drupal_get_form',

    'page arguments' => array('views_ui_import_page'),

    'access callback' => 'views_import_access',

    'type' => MENU_LOCAL_ACTION,

  ) + $base;

  $items['admin/structure/views/settings'] = array(

    'title' => 'Settings',

    'page callback' => 'drupal_get_form',

    'page arguments' => array('views_ui_admin_settings_basic'),

    'type' => MENU_LOCAL_TASK,

  ) + $base;

  $items['admin/structure/views/settings/basic'] = array(

    'title' => 'Basic',

    'page arguments' => array('views_ui_admin_settings_basic'),

    'type' => MENU_DEFAULT_LOCAL_TASK,

  ) + $base;

  $items['admin/structure/views/settings/advanced'] = array(

    'title' => 'Advanced',

    'page arguments' => array('views_ui_admin_settings_advanced'),

    'type' => MENU_LOCAL_TASK,

    'weight' => 1,

  ) + $base;

  // The primary Edit View page. Secondary tabs for each Display are added in

  // views_ui_menu_local_tasks_alter().

  $items['admin/structure/views/view/%views_ui_cache'] = array(

    'title callback' => 'views_ui_edit_page_title',

    'title arguments' => array(4),

    'page callback' => 'views_ui_edit_page',

    'page arguments' => array(4),

  ) + $base;

  $items['admin/structure/views/view/%views_ui_cache/edit'] = array(

    'title' => 'Edit view',

    'type' => MENU_DEFAULT_LOCAL_TASK,

    'context' => MENU_CONTEXT_PAGE | MENU_CONTEXT_INLINE,

    'weight' => -10,

    'theme callback' => 'ajax_base_page_theme',

  ) + $base;

  $items['admin/structure/views/view/%views_ui_cache/edit/%/ajax'] = array(

    'page callback' => 'views_ui_ajax_get_form',

    'page arguments' => array('views_ui_edit_form', 4, 6),

    'delivery callback' => 'ajax_deliver',

    'theme callback' => 'ajax_base_page_theme',

    'type' => MENU_CALLBACK,

  ) + $base;

  $items['admin/structure/views/view/%views_ui_cache/preview/%'] = array(

    'page callback' => 'views_ui_build_preview',

    'page arguments' => array(4, 6),

    'context' => MENU_CONTEXT_PAGE | MENU_CONTEXT_INLINE,

    'type' => MENU_VISIBLE_IN_BREADCRUMB,

  ) + $base;

  $items['admin/structure/views/view/%views_ui_cache/preview/%/ajax'] = array(

    'page callback' => 'views_ui_build_preview',

    'page arguments' => array(4, 6),

    'delivery callback' => 'ajax_deliver',

    'theme callback' => 'ajax_base_page_theme',

    'type' => MENU_CALLBACK,

  ) + $base;

  // Additional pages for acting on a View.

  $items['admin/structure/views/view/%views_ui_cache/break-lock'] = array(

    'title' => 'Break lock',

    'page callback' => 'drupal_get_form',

    'page arguments' => array('views_ui_break_lock_confirm', 4),

    'type' => MENU_VISIBLE_IN_BREADCRUMB,

  ) + $base;

  // NoJS/AJAX callbacks that can use the default Views AJAX form system.

  $items['admin/structure/views/nojs/%/%views_ui_cache'] = array(

    'page callback' => 'views_ui_ajax_form',

    'page arguments' => array(FALSE, 4, 5),

    'type' => MENU_CALLBACK,

  ) + $base;

  $items['admin/structure/views/ajax/%/%views_ui_cache'] = array(

    'page callback' => 'views_ui_ajax_form',

    'page arguments' => array(TRUE, 4, 5),

    'delivery callback' => 'ajax_deliver',

    'type' => MENU_CALLBACK,

  ) + $base;

  // NoJS/AJAX callbacks that require custom page callbacks.

  $ajax_callbacks = array(

    'preview' => 'views_ui_preview',

  );

  foreach ($ajax_callbacks as $menu => $menu_callback) {

    $items['admin/structure/views/nojs/' . $menu . '/%views_ui_cache/%'] = array(

      'page callback' => $menu_callback,

      'page arguments' => array(5, 6),

    ) + $base;

    $items['admin/structure/views/ajax/' . $menu . '/%views_ui_cache/%'] = array(

      'page callback' => $menu_callback,

      'page arguments' => array(5, 6),

      'delivery callback' => 'ajax_deliver',

    ) + $base;

  }

  // Autocomplete callback for tagging a View.

  // Views module uses admin/views/... instead of admin/structure/views/... for

  // autocomplete paths, so be consistent with that.

  // @todo Change to admin/structure/views/... when the change can be made to

  //   Views module as well.

  $items['admin/views/ajax/autocomplete/tag'] = array(

    'page callback' => 'views_ui_autocomplete_tag',

    'type' => MENU_CALLBACK,

  ) + $base;

  // A page in the Reports section to show usage of fields in all views

  $items['admin/reports/fields/list'] = array(

    'title' => 'List',

    'type' => MENU_DEFAULT_LOCAL_TASK,

    'weight' => -10,

  );

  $items['admin/reports/fields/views-fields'] = array(

    'title' => 'Used in views',

    'description' => 'Overview of fields used in all views.',

    'page callback' => 'views_ui_field_list',

    'type' => MENU_LOCAL_TASK,

    'weight' => 0,

  ) + $base;

  // A page in the Reports section to show usage of plugins in all views.

  $items['admin/reports/views-plugins'] = array(

    'title' => 'Views plugins',

    'description' => 'Overview of plugins used in all views.',

    'page callback' => 'views_ui_plugin_list',

  ) + $base;

  return $items;

}

/**

 * Implements hook_theme().

 */

function views_ui_theme() {

  $path = drupal_get_path('module', 'views');

  require_once DRUPAL_ROOT . "/$path/includes/admin.inc";

  return array(

    // edit a view

    'views_ui_display_tab_setting' => array(

      'variables' => array('description' => '', 'link' => '', 'settings_links' => array(), 'overridden' => FALSE, 'defaulted' => FALSE, 'description_separator' => TRUE, 'class' => array()),

      'template' => 'views-ui-display-tab-setting',

      'path' => "$path/theme",

    ),

    'views_ui_display_tab_bucket' => array(

      'render element' => 'element',

      'template' => 'views-ui-display-tab-bucket',

      'path' => "$path/theme",

    ),

    'views_ui_rearrange_form' => array(

      'render element' => 'form',

    ),

    'views_ui_rearrange_filter_form' => array(

      'render element' => 'form',

      'file' => 'includes/admin.inc',

    ),

    'views_ui_expose_filter_form' => array(

      'render element' => 'form',

      'file' => 'includes/admin.inc',

    ),

    // list views

    'views_ui_view_info' => array(

      'variables' => array('view' => NULL, 'base' => NULL),

      'file' => "includes/admin.inc",

    ),

    // Group of filters.

    'views_ui_build_group_filter_form' => array(

      'render element' => 'form',

      'file' => 'includes/admin.inc',

    ),

    // tab themes

    'views_tabset' => array(

      'variables' => array('tabs' => NULL),

    ),

    'views_tab' => array(

      'variables' => array('body' => NULL),

    ),

    'views_ui_reorder_displays_form' => array(

      'render element' => 'form',

      'file' => 'includes/admin.inc',

    ),

    // On behalf of a plugin

    'views_ui_style_plugin_table' => array(

      'render element' => 'form',

    ),

    // When previewing a view.

    'views_ui_view_preview_section' => array(

      'variables' => array('view' => NULL, 'section' => NULL, 'content' => NULL, 'links' => ''),

    ),

    // Generic container wrapper, to use instead of theme_container when an id

    // is not desired.

    'views_container' => array(

      'render element' => 'element',

      'file' => 'theme/theme.inc',

    ),

  );

}

/**

 * Implements hook_custom_theme().

 */

function views_ui_custom_theme() {

  $theme = variable_get('views_ui_custom_theme', '_default');

  if ($theme != '_default') {

    $available = list_themes();

    if (isset($available[$theme]) && $available[$theme]->status && preg_match('/^admin\/structure\/views/', current_path())) {

      return $theme;

    }

  }

}

/**

 * Page title callback for the Edit View page.

 */

function views_ui_edit_page_title($view) {

  module_load_include('inc', 'views_ui', 'includes/admin');

  $bases = views_fetch_base_tables();

  $name = $view->get_human_name();

  if (isset($bases[$view->base_table])) {

    $name .= ' (' . $bases[$view->base_table]['title'] . ')';

  }

  return $name;

}

/**

 * Specialized menu callback to load a view and check its locked status.

 *

 * @param $name

 *   The machine name of the view.

 *

 * @return

 *   The view object, with a "locked" property indicating whether or not

 *   someone else is already editing the view.

 */

function views_ui_cache_load($name) {

  ctools_include('object-cache');

  views_include('view');

  $view = ctools_object_cache_get('view', $name);

  $original_view = views_get_view($name);

  if (empty($view)) {

    $view = $original_view;

    if (!empty($view)) {

      // Check to see if someone else is already editing this view.

      $view->locked = ctools_object_cache_test('view', $view->name);

      // Set a flag to indicate that this view is being edited.

      // This flag will be used e.g. to determine whether strings

      // should be localized.

      $view->editing = TRUE;

    }

  }

  else {

    // Keep disabled/enabled status real.

    if ($original_view) {

      $view->disabled = !empty($original_view->disabled);

    }

  }

  if (empty($view)) {

    return FALSE;

  }

  else {

    return $view;

  }

}

/**

 * Specialized cache function to add a flag to our view, include an appropriate

 * include, and cache more easily.

 */

function views_ui_cache_set(&$view) {

  if (!empty($view->locked)) {

    drupal_set_message(t('Changes cannot be made to a locked view.'), 'error');

    return;

  }

  ctools_include('object-cache');

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

  if (isset($view->current_display)) {

    // Add the knowledge of the changed display, too.

    $view->changed_display[$view->current_display] = TRUE;

    unset($view->current_display);

  }

  // Unset handlers; we don't want to write these into the cache

  unset($view->display_handler);

  unset($view->default_display);

  $view->query = NULL;

  foreach (array_keys($view->display) as $id) {

    unset($view->display[$id]->handler);

    unset($view->display[$id]->default_display);

  }

  ctools_object_cache_set('view', $view->name, $view);

}

/**

 * Specialized menu callback to load a view that is only a default

 * view.

 */

function views_ui_default_load($name) {

  $view = views_get_view($name);

  if ($view->type == t('Default')) {

    return $view;

  }

  return FALSE;

}

/**

 * Theme preprocess for views-view.tpl.php.

 */

function views_ui_preprocess_views_view(&$vars) {

  $view = $vars['view'];

  if (!empty($view->views_ui_context) && module_exists('contextual')) {

    $view->hide_admin_links = TRUE;

    foreach (array('title', 'header', 'exposed', 'rows', 'pager', 'more', 'footer', 'empty', 'attachment_after', 'attachment_before') as $section) {

      if (!empty($vars[$section])) {

        $vars[$section] = array(

          '#theme' => 'views_ui_view_preview_section',

          '#view' => $view,

          '#section' => $section,

          '#content' => is_array($vars[$section]) ? drupal_render($vars[$section]) : $vars[$section],

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

          '#attributes' => array('class' => 'contextual-links-region'),

        );

        $vars[$section] = drupal_render($vars[$section]);

      }

    }

  }

}

/**

 * Theme preprocess for theme_views_ui_view_preview_section().

 *

 * @TODO

 *    Perhaps move this to includes/admin.inc or theme/theme.inc

 */

function template_preprocess_views_ui_view_preview_section(&$vars) {

  switch ($vars['section']) {

    case 'title':

      $vars['title'] = t('Title');

      $links = views_ui_view_preview_section_display_category_links($vars['view'], 'title', $vars['title']);

      break;

    case 'header':

      $vars['title'] = t('Header');

      $links = views_ui_view_preview_section_handler_links($vars['view'], $vars['section']);

      break;

    case 'empty':

      $vars['title'] = t('No results behavior');

      $links = views_ui_view_preview_section_handler_links($vars['view'], $vars['section']);

      break;

    case 'exposed':

      // @todo Sorts can be exposed too, so we may need a better title.

      $vars['title'] = t('Exposed Filters');

      $links = views_ui_view_preview_section_display_category_links($vars['view'], 'exposed_form_options', $vars['title']);

      break;

    case 'rows':

      // @todo The title needs to depend on what is being viewed.

      $vars['title'] = t('Content');

      $links = views_ui_view_preview_section_rows_links($vars['view']);

      break;

    case 'pager':

      $vars['title'] = t('Pager');

      $links = views_ui_view_preview_section_display_category_links($vars['view'], 'pager_options', $vars['title']);

      break;

    case 'more':

      $vars['title'] = t('More');

      $links = views_ui_view_preview_section_display_category_links($vars['view'], 'use_more', $vars['title']);

      break;

    case 'footer':

      $vars['title'] = t('Footer');

      $links = views_ui_view_preview_section_handler_links($vars['view'], $vars['section']);

      break;

    case 'attachment_before':

      // @todo: Add links to the attachment configuration page.

      $vars['title'] = t('Attachment before');

      break;

    case 'attachment_after':

      // @todo: Add links to the attachment configuration page.

      $vars['title'] = t('Attachment after');

      break;

  }

  if (isset($links)) {

    $build = array(

      '#prefix' => '<div class="contextual-links-wrapper">',

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

      '#theme' => 'links__contextual',

      '#links' => $links,

      '#attributes' => array('class' => array('contextual-links')),

      '#attached' => array(

        'library' => array(array('contextual', 'contextual-links')),

      ),

    );

    $vars['links'] = drupal_render($build);

  }

  $vars['theme_hook_suggestions'][] = 'views_ui_view_preview_section__' . $vars['section'];

}

/**

 * Returns the HTML for a section of a View being previewed within the Views UI.

 */

function theme_views_ui_view_preview_section($vars) {

  return '<h1 class="section-title">' . $vars['title'] . '</h1>'

  . $vars['links']

  . '<div class="preview-section">'. $vars['content'] . '</div>';

}

/**

 * Returns contextual links for each handler of a certain section.

 *

 * @TODO

 *   Bring in relationships

 *   Refactor this function to use much stuff of views_ui_edit_form_get_bucket.

 *

 * @param $title

 *   Add a bolded title of this section.

 */

function views_ui_view_preview_section_handler_links($view, $type, $title = FALSE) {

  $display = $view->display_handler->display;

  $handlers = $view->display_handler->get_handlers($type);

  $links = array();

  $types = views_object_types();

  if ($title) {

    $links[$type . '-title'] = array(

      'title' => $types[$type]['title'],

    );

  }

  foreach ($handlers as $id => $handler) {

    $field_name = $handler->ui_name(TRUE);

    $links[$type . '-edit-' . $id] = array(

      'title' => t('Edit @section', array('@section' => $field_name)),

      'href' => "admin/structure/views/nojs/config-item/$view->name/$display->id/$type/$id",

      'attributes' => array('class' => array('views-ajax-link')),

    );

  }

  $links[$type . '-add'] = array(

    'title' => t('Add new'),

    'href' => "admin/structure/views/nojs/add-item/$view->name/$display->id/$type",

    'attributes' => array('class' => array('views-ajax-link')),

  );

  return $links;

}

/**

 * Returns a link to editing a certain display setting.

 */

function views_ui_view_preview_section_display_category_links($view, $type, $title) {

  $display = $view->display_handler->display;

  $links = array(

    $type . '-edit' => array(

      'title' => t('Edit @section', array('@section' => $title)),

      'href' => "admin/structure/views/nojs/display/$view->name/$display->id/$type",

      'attributes' => array('class' => array('views-ajax-link')),

    ),

  );

  return $links;

}

/**

 * Returns all contextual links for the main content part of the view.

 */

function views_ui_view_preview_section_rows_links($view) {

  $display = $view->display_handler->display;

  $links = array();

  $links = array_merge($links, views_ui_view_preview_section_handler_links($view, 'filter', TRUE));

  $links = array_merge($links, views_ui_view_preview_section_handler_links($view, 'field', TRUE));

  $links = array_merge($links, views_ui_view_preview_section_handler_links($view, 'sort', TRUE));

  $links = array_merge($links, views_ui_view_preview_section_handler_links($view, 'argument', TRUE));

  $links = array_merge($links, views_ui_view_preview_section_handler_links($view, 'relationship', TRUE));

  return $links;

}

/**

 * Implments hook_ctools_plugin_directory().

 *

 * Views UI provides wizard plugins on behalf of core base tables.

 */

function views_ui_ctools_plugin_directory($module, $plugin) {

  if ($module == 'views_ui' || ($module == 'ctools' && $plugin == 'export_ui')) {

    return 'plugins/' . $plugin;

  }

}

/**

 * Fetch metadata on a specific views ui wizard plugin.

 *

 * @param $wizard_type

 *   Name of a wizard, or name of a base table.

 *

 * @return

 *   An array with information about the requested wizard type.

 */

function views_ui_get_wizard($wizard_type) {

  ctools_include('plugins');

  $wizard = ctools_get_plugins('views_ui', 'views_wizard', $wizard_type);

  // @todo - handle this via an alter hook instead.

  if (!$wizard) {

    // Must be a base table using the default wizard plugin.

    $base_tables = views_fetch_base_tables();

    if (!empty($base_tables[$wizard_type])) {

      $wizard = views_ui_views_wizard_defaults();

      $wizard['base_table'] = $wizard_type;

      $wizard['title'] = $base_tables[$wizard_type]['title'];

    }

    // The plugin is neither a base table nor an existing wizard.

    else {

      vpr('Views Wizard: @wizard does not exist. Be sure to implement hook_ctools_plugin_directory.', array('@wizard' => $wizard_type));

    }

  }

  return $wizard;

}

/**

 * Fetch metadata for all content_type plugins.

 *

 * @return

 *   An array of arrays with information about all available views wizards.

 */

function views_ui_get_wizards() {

  ctools_include('plugins');

  $wizard_plugins = ctools_get_plugins('views_ui', 'views_wizard');

  $wizard_tables = array();

  foreach ($wizard_plugins as $name => $info) {

    $wizard_tables[$info['base_table']] = TRUE;

  }

  $base_tables = views_fetch_base_tables();

  $default_wizard = views_ui_views_wizard_defaults();

  // Find base tables with no wizard.

  // @todo - handle this via an alter hook for plugins?

  foreach ($base_tables as $table => $info) {

    if (!isset($wizard_tables[$table])) {

      $wizard = $default_wizard;

      $wizard['title'] = $info['title'];

      $wizard['base_table'] = $table;

      $wizard_plugins[$table] = $wizard;

    }

  }

  return $wizard_plugins;

}

/**

 * Helper function to define the default values for a Views wizard plugin.

 *

 * @return

 *   An array of defaults for a views wizard.

 */

function views_ui_views_wizard_defaults() {

  return array(

    // The children may, for example, be a different variant for each node type.

    'get children' => NULL,

    'get child' => NULL,

    // title and base table must be populated.  They are empty here just

    // so they are documented.

    'title' => '',

    'base_table' => NULL,

    // This is a callback that takes the wizard as argument and returns

    // an instantiazed Views UI form wizard object.

    'get_instance' => 'views_ui_get_form_wizard_instance',

    'form_wizard_class' => array(

      'file' => 'views_ui_base_views_wizard',

      'class' => 'ViewsUiBaseViewsWizard',

    ),

  );

}

/**

 * Inform CTools that the Views wizard plugin can have child plugins.

 */

function views_ui_ctools_plugin_type() {

  return array(

    'views_wizard' => array(

      'child plugins' => TRUE,

      'classes' => array(

        'form_wizard_class',

      ),

      'defaults' => views_ui_views_wizard_defaults(),

    ),

  );

}

function views_ui_get_form_wizard_instance($wizard) {

  if (isset($wizard['form_wizard_class']['class'])) {

    $class = $wizard['form_wizard_class']['class'];

    return new $class($wizard);

  }

  else {

    return new ViewsUiBaseViewsWizard($wizard);

  }

}

/**

 * Implements hook_views_plugins_alter().

 */

function views_ui_views_plugins_alter(&$plugins) {

  // Attach contextual links to each display plugin. The links will point to

  // paths underneath "admin/structure/views/view/{$view->name}" (i.e., paths

  // for editing and performing other contextual actions on the view).

  foreach ($plugins['display'] as &$display) {

    $display['contextual links']['views_ui'] = array(

      'parent path' => 'admin/structure/views/view',

      'argument properties' => array('name'),

    );

  }

}

/**

 * Implements hook_contextual_links_view_alter().

 */

function views_ui_contextual_links_view_alter(&$element, $items) {

  // Remove contextual links from being rendered, when so desired, such as

  // within a View preview.

  if (views_ui_contextual_links_suppress()) {

    $element['#links'] = array();

  }

  // Append the display ID to the Views UI edit links, so that clicking on the

  // contextual link takes you directly to the correct display tab on the edit

  // screen.

  elseif (!empty($element['#links']['views-ui-edit']) && !empty($element['#element']['#views_contextual_links_info']['views_ui']['view_display_id'])) {

    $display_id = $element['#element']['#views_contextual_links_info']['views_ui']['view_display_id'];

    $element['#links']['views-ui-edit']['href'] .= '/' . $display_id;

  }

}

/**

 * Sets a static variable for controlling whether contextual links are rendered.

 *

 * @see views_ui_contextual_links_view_alter()

 */

function views_ui_contextual_links_suppress($set = NULL) {

  $suppress = &drupal_static(__FUNCTION__);

  if (isset($set)) {

    $suppress = $set;

  }

  return $suppress;

}

/**

 * Increments the views_ui_contextual_links_suppress() static variable.

 *

 * When this function is added to the #pre_render of an element, and

 * 'views_ui_contextual_links_suppress_pop' is added to the #post_render of the

 * same element, then all contextual links within the element and its

 * descendants are suppressed from being rendered. This is used, for example,

 * during a View preview, when it is not desired for nodes in the Views result

 * to have contextual links.

 *

 * @see views_ui_contextual_links_suppress_pop()

 */

function views_ui_contextual_links_suppress_push() {

  views_ui_contextual_links_suppress(((int) views_ui_contextual_links_suppress())+1);

}

/**

 * Decrements the views_ui_contextual_links_suppress() static variable.

 *

 * @see views_ui_contextual_links_suppress_push()

 */

function views_ui_contextual_links_suppress_pop() {

  views_ui_contextual_links_suppress(((int) views_ui_contextual_links_suppress())-1);

}

/**

 * Menu callback; handles AJAX form submissions similar to ajax_form_callback(), but can be used for uncached forms.

 *

 * ajax_form_callback(), the menu callback for the system/ajax path, requires

 * the form to be retrievable from the form cache, because it lacks a trusted

 * $form_id argument with which to call drupal_retrieve_form(). When AJAX is

 * wanted on a non-cacheable form, #ajax['path'] can be set to a path whose

 * menu router item's 'page callback' is this function, and whose

 * 'page arguments' is the form id, optionally followed by additional build

 * arguments, as expected by drupal_get_form().

 *

 * The same caution must be used when defining a hook_menu() entry with this

 * page callback as is used when defining a hook_menu() entry with the

 * 'drupal_get_form' page callback: a 'page arguments' must be specified with a

 * literal value as the first argument, because $form_id determines which form

 * builder function gets called, so must be safe from user tampering.

 *

 * @see drupal_get_form()

 * @see ajax_form_callback()

 * @see http://drupal.org/node/774876

 */

function views_ui_ajax_get_form($form_id) {

  // @see ajax_get_form()

  $form_state = array(

    'no_redirect' => TRUE,

  );

  $form_state['rebuild_info']['copy']['#build_id'] = TRUE;

  $form_state['rebuild_info']['copy']['#action'] = TRUE;

  // @see drupal_get_form()

  $args = func_get_args();

  array_shift($args);

  $form_state['build_info']['args'] = $args;

  $form = drupal_build_form($form_id, $form_state);

  // @see ajax_form_callback()

  if (!empty($form_state['triggering_element'])) {

    $callback = $form_state['triggering_element']['#ajax']['callback'];

  }

  if (!empty($callback) && function_exists($callback)) {

    return $callback($form, $form_state);

  }

}

// @todo move these when we can

/**

 * Helper function to get a list of paths assigned to a view.

 *

 * @param $view

 *   The view.

 *

 * @return

 *   An array of links to this view's display paths.

 */

function _views_ui_get_paths($view) {

  $all_paths = array();

  if (empty($view->display)) {

    $all_paths[] = t('Edit this view to add a display.');

  }

  else {

    $view->init_display();   // Make sure all the handlers are set up

    foreach ($view->display as $display) {

      if (!empty($display->handler) && $display->handler->has_path()) {

        $one_path = $display->handler->get_option('path');

        if (empty($path_sort)) {

          $path_sort = strtolower($one_path);

        }

        if (empty($view->disabled) && strpos($one_path, '%') === FALSE) {

          $all_paths[] = l('/' . $one_path, $one_path);

        }

        else {

          $all_paths[] = check_plain('/' . $one_path);

        }

      }

    }

  }

  return array_unique($all_paths);

}

/**

 * Helper function to get a list of displays included in a view.

 *

 * @param $view

 *   The view.

 *

 * @return

 *   An array of display types that this view includes.

 */

function _views_ui_get_displays_list($view) {

  $displays = array();

  foreach ($view->display as $display) {

    if (!empty($display->handler->definition['admin'])) {

      $displays[$display->handler->definition['admin']] = TRUE;

    }

  }

  if ($displays) {

    ksort($displays);

    $displays = array_keys($displays);

  }

  return $displays;

}

/**

 * This is part of a patch to address a jQueryUI bug.  The bug is responsible

 * for the inability to scroll a page when a modal dialog is active. If the content

 * of the dialog extends beyond the bottom of the viewport, the user is only able

 * to scroll with a mousewheel or up/down keyboard keys.

 *

 * @see http://bugs.jqueryui.com/ticket/4671

 * @see https://bugs.webkit.org/show_bug.cgi?id=19033

 * @see /js/jquery.ui.dialog.patch.js

 * @see /js/jquery.ui.dialog.min.js

 *

 * The javascript patch overwrites the $.ui.dialog.overlay.events object to remove

 * the mousedown, mouseup and click events from the list of events that are bound

 * in $.ui.dialog.overlay.create.

 */

function views_ui_library_alter(&$libraries, $module) {

  if ($module == 'system' && isset($libraries['ui.dialog'])) {

    // Only apply the fix, if we don't have an up to date jQueryUI version.

    if (version_compare($libraries['ui.dialog']['version'], '1.7.2', '>=') && version_compare($libraries['ui.dialog']['version'], '1.10.0', '<')) {

      $libraries['ui.dialog']['js'][drupal_get_path('module', 'views') . '/js/jquery.ui.dialog.patch.js'] = array();

    }

  }

}

/**

 * Truncate strings to a set length and provide a ... if they truncated.

 *

 * This is often used in the UI to ensure long strings fit.

 */

function views_ui_truncate($string, $length) {

  if (drupal_strlen($string) > $length) {

    $string = drupal_substr($string, 0, $length);

    $string .= '...';

  }

  return $string;

}