Club Drupal

<?php

/**

 * @file

 * Field UI functions for Display Suite.

 */

/**

 * Adds the Display Suite fields and layouts to the form.

 */

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

  global $base_root, $base_path;

  // Get the entity_type, bundle and view mode.

  $entity_type = $form['#entity_type'];

  $bundle = $form['#bundle'];

  $view_mode = $form['#view_mode'];

  $form['#export_id'] = $entity_type . '|' . $bundle . '|' . $view_mode;

  // Create vertical tabs.

  ds_field_ui_create_vertical_tabs($form);

  // Add layout fieldset.

  _ds_field_ui_table_layouts($entity_type, $bundle, $view_mode, $form, $form_state);

  // Add/alter fields on the table, but only if a layout is selected.

  if ($view_mode != 'form' && !empty($form['#ds_layout'])) {

    _ds_field_ui_fields($entity_type, $bundle, $view_mode, $form, $form_state);

    // Also alter core fields

    _ds_field_ui_core_fields($entity_type, $bundle, $view_mode, $form, $form_state);

  }

  // Add buttons to add fields in overlay.

  if (isset($form['#ds_layout']) && user_access('admin_fields') && $view_mode != 'form' && module_exists('ds_ui')) {

    _ds_field_ui_custom_fields($entity_type, $bundle, $view_mode, $form, $form_state);

  }

  // Special validate function for field group.

  if (isset($form_state['no_field_group'])) {

    array_unshift($form['#validate'], '_ds_field_group_field_ui_fix_notices');

  }

  // Attach js.

  $form['#attached']['js'][] = drupal_get_path('module', 'ds') . '/js/ds.admin.js';

  // Attach css.

  $form['#attached']['css'][] = drupal_get_path('module', 'ds') . '/css/ds.admin.css';

  // Add process function to add the regions.

  $form['#process'][] = 'ds_field_ui_regions';

  // Add a destination so we can get back if layout has been changed.

  $form['ds_source'] = array(

    '#type' => 'hidden',

    '#value' => $base_root . $base_path,

  );

  $form['ds_destination'] = array(

    '#type' => 'hidden',

    '#value' => drupal_get_destination(),

  );

  $form['ds_entity_type'] = array(

    '#type' => 'hidden',

    '#value' => $entity_type,

  );

  $form['ds_bundle'] = array(

    '#type' => 'hidden',

    '#value' => $bundle,

  );

  $form['ds_view_mode'] = array(

    '#type' => 'hidden',

    '#value' => $view_mode,

  );

}

/**

 * Create vertical tabs.

 */

function ds_field_ui_create_vertical_tabs(&$form) {

  // Add additional settings vertical tab.

  if (!isset($form['additional_settings'])) {

    $form['additional_settings'] = array(

      '#type' => 'vertical_tabs',

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

      '#prefix' => '<div>',

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

      '#tree' => TRUE,

    );

    $form['#attached']['js'][] = 'misc/form.js';

    $form['#attached']['js'][] = 'misc/collapse.js';

  }

  $view_mode_admin_access = user_access('admin_view_modes') && module_exists('ds_ui');

  if (isset($form['modes'])) {

    if ($view_mode_admin_access) {

      $form['modes']['view_modes_custom']['#description'] = l(t('Manage view modes'), 'admin/structure/ds/view_modes');

    }

    $form['additional_settings']['modes'] = $form['modes'];

    $form['additional_settings']['modes']['#weight'] = -10;

    unset($form['modes']);

  }

  else {

    if ($view_mode_admin_access) {

      $form['additional_settings']['modes']['view_modes_custom']['#description'] = l(t('Manage view modes'), 'admin/structure/ds/view_modes');

    }

  }

}

/**

 * Menu callback: Disable layout and field settings form.

 */

function ds_disable_layout_field_settings_form($form, &$form_state, $id = '') {

  $layout = new stdClass();

  ctools_include('export');

  $ds_layout_settings = ctools_export_crud_load_all('ds_layout_settings');

  if (isset($ds_layout_settings[$id])) {

    $layout = $ds_layout_settings[$id];

  }

  if (isset($layout) && $layout->export_type != 1 && empty($layout->disable)) {

    $form['#layout'] = $layout;

    $form['#export_id'] = $id;

    return confirm_form($form,

      t('Are you sure you want to disable the layout and field settings for %layout?', array('%layout' => implode(', ', explode('|', $layout->id)))),

      drupal_get_destination(),

      t('This action cannot be undone.'),

      t('Disable'),

      t('Cancel')

    );

  }

  else {

    drupal_set_message(t('This operation is not possible.'));

  }

}

/**

 * Submit callback: disable layout and field settings.

 */

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

  $layout = $form['#layout'];

  ctools_include('export');

  ctools_export_crud_disable('ds_layout_settings', $form['#export_id']);

  ctools_export_crud_disable('ds_field_settings', $form['#export_id']);

  // @todo layout fields

  // Clear the ds_fields cache.

  cache_clear_all('ds_fields:', 'cache', TRUE);

  cache_clear_all('ds_field_settings', 'cache');

  // Clear entity info cache.

  cache_clear_all('entity_info', 'cache', TRUE);

  drupal_set_message(t('Layout has been disabled.'));

  $form_state['redirect'] = isset($_GET['destination']) ? $_GET['destination'] : drupal_get_destination();

}

/**

 * Menu callback: Enable layout and field settings form.

 */

function ds_enable_layout_field_settings_form($form, &$form_state, $id = '') {

  $layout = new stdClass();

  ctools_include('export');

  $ds_layout_settings = ctools_export_crud_load_all('ds_layout_settings');

  if (isset($ds_layout_settings[$id])) {

    $layout = $ds_layout_settings[$id];

  }

  if (isset($layout) && $layout->export_type != 1 && !empty($layout->disabled)) {

    $form['#layout'] = $layout;

    $form['#export_id'] = $id;

    return confirm_form($form,

      t('Are you sure you want to enable the layout and field settings for %layout?', array('%layout' => implode(', ', explode('|', $layout->id)))),

      drupal_get_destination(),

      t('This action cannot be undone.'),

      t('Enable'),

      t('Cancel')

    );

  }

  else {

    drupal_set_message(t('This operation is not possible.'));

  }

}

/**

 * Submit callback: enable layout and field settings.

 */

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

  $layout = $form['#layout'];

  ctools_include('export');

  ctools_export_crud_enable('ds_layout_settings', $form['#export_id']);

  ctools_export_crud_enable('ds_field_settings', $form['#export_id']);

  // Clear the ds_fields cache.

  cache_clear_all('ds_fields:', 'cache', TRUE);

  cache_clear_all('ds_field_settings', 'cache');

  // Clear entity info cache.

  cache_clear_all('entity_info', 'cache', TRUE);

  drupal_set_message(t('Layout has been enabled'));

  $form_state['redirect'] = isset($_GET['destination']) ? $_GET['destination'] : drupal_get_destination();

}

/**

 * Menu callback: Revert layout and field settings form.

 */

function ds_revert_layout_field_settings_form($form, &$form_state, $id = '') {

  $layout = new stdClass();

  ctools_include('export');

  $ds_layout_settings = ctools_export_crud_load_all('ds_layout_settings');

  if (isset($ds_layout_settings[$id])) {

    $layout = $ds_layout_settings[$id];

  }

  if (isset($layout) && $layout->export_type == 3) {

    $form['#layout'] = $layout;

    return confirm_form($form,

      t('Are you sure you want to revert the layout for %layout?', array('%layout' => implode(', ', explode('|', $layout->id)))),

      drupal_get_destination(),

      t('This action cannot be undone.'),

      t('Revert'),

      t('Cancel')

    );

  }

  else {

    drupal_set_message(t('This operation is not possible.'));

  }

}

/**

 * Submit callback: revert layout and field settings.

 */

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

  $layout = $form['#layout'];

  db_delete('ds_field_settings')

    ->condition('id', $layout->id)

    ->execute();

  db_delete('ds_layout_settings')

    ->condition('id', $layout->id)

    ->execute();

  // Clear the ds_fields cache.

  cache_clear_all('ds_fields:', 'cache', TRUE);

  cache_clear_all('ds_field_settings', 'cache');

  // Clear entity info cache.

  cache_clear_all('entity_info', 'cache', TRUE);

  drupal_set_message(t('Layout has been reverted'));

  $form_state['redirect'] = isset($_GET['destination']) ? $_GET['destination'] : drupal_get_destination();

}

/**

 * Add Regions to 'Manage fields' or 'Manage display' screen.

 *

 * @param $form

 *   The form to add layout fieldset and extra Display Suite fields.

 * @param $form_state

 *   The current form state.

 */

function ds_field_ui_regions($form, $form_state) {

  // Get the entity_type, bundle and view mode.

  $entity_type = $form['#entity_type'];

  $bundle = $form['#bundle'];

  $view_mode = $form['#view_mode'];

  // Ignore fieldgroup options.

  if (isset($form_state['no_field_group'])) {

    unset($form['fields']['_add_new_group']);

    $form['additional_settings']['field_group']['#access'] = FALSE;

  }

  // Check layout.

  $layout = isset($form['#ds_layout']) ? $form['#ds_layout'] : FALSE;

  // Change UI to add Region column if we have a layout.

  if ($layout) {

    $table = &$form['fields'];

    if ($view_mode != 'form') {

      $table['#header'] = array(

        t('Field'),

        t('Weight'),

        t('Parent'),

        t('Region'),

        t('Label'),

        array('data' => t('Format'), 'colspan' => 3),

      );

    }

    else {

      $table['#header'] = array(

        t('Label'),

        t('Weight'),

        t('Parent'),

        t('Region'),

        t('Name'),

        t('Field'),

        t('Widget'),

        array('data' => t('Operations'), 'colspan' => 2),

      );

    }

    // Remove label and format for views.

    if ($entity_type == 'ds_views') {

      $table['#header'][4] = '';

    }

    $table['#regions'] = array();

    foreach ($layout->regions as $region_key => $region_title) {

      $region_options[$region_key] = $region_title;

      $table['#regions'][$region_key] = array(

        'title' => $region_title,

        'message' => t('No fields are displayed in this region'),

      );

    }

    // Let other modules alter the regions.

    $context = array(

      'entity_type' => $entity_type,

      'bundle' => $bundle,

      'view_mode' => $view_mode

    );

    $region_info = array(

      'region_options' => &$region_options,

      'table_regions' => &$table['#regions'],

    );

    drupal_alter('ds_layout_region', $context, $region_info);

    $region_options['hidden'] = $view_mode != 'form' ? t('Disabled') : t('Hidden');

    $table['#regions']['hidden'] = array(

      'title' => $view_mode != 'form' ? t('Disabled') : t('Hidden'),

      'message' => t('No fields are hidden.')

    );

    $region = array(

      '#type' => 'select',

      '#options' => $region_options,

      '#default_value' => 'hidden',

      '#attributes' => array(

        'class' => array('ds-field-region'),

      )

    );

    $limit_items = array(

      '#type' => 'textfield',

      '#size' => 2,

      '#default_value' => '',

      '#weight' => 10,

      '#default_value' => '#',

      '#prefix' => '<div class="limit-float">',

      '#suffix' => '</div><div class="clearfix"></div>',

      '#attributes' => array(

        'alt' => t('Enter a number to limit the number of items or \'delta\' to print a specific delta (usually configured in views or found in entity->ds_delta). Leave empty to display them all. Note that depending on the formatter settings, this option might not always work.'),

        'title' => t('Enter a number to limit the number of items or \'delta\' to print a specific delta (usually configured in views or found in entity->ds_delta). Leave empty to display them all. Note that depending on the formatter settings, this option might not always work.'),

      ),

    );

    // Hide this if we formatter_settings_edit is not empty so it doesn't confuse users.

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

      $limit_items['#access'] = FALSE;

    }

    // Update existing rows by changing rowHandler and adding regions.

    foreach (element_children($table) as $name) {

      $row = &$table[$name];

      $row['#js_settings'] = array('rowHandler' => 'ds');

      $row['#region_callback'] = 'ds_field_ui_row_region';

      // Remove hidden format.

      if (isset($row['format']['type']['#options']['hidden'])) {

        unset($row['format']['type']['#options']['hidden']);

      }

      // Add label class.

      if (isset($row['label'])) {

        if (isset($form_state['formatter_settings']) && isset($form_state['formatter_settings'][$name]['ft'])) {

          if (!empty($form_state['formatter_settings'][$name]['ft']['lb'])) {

            $row['human_name']['#markup'] = check_plain($form_state['formatter_settings'][$name]['ft']['lb']) . ' ' . t('(Original: !orig)', array('!orig' => $row['human_name']['#markup']));

          }

        }

      }

      // Limit items.

      $field_info = field_info_field($name);

      if (isset($field_info['cardinality']) && $field_info['cardinality'] != 1 && $view_mode != 'form') {

        $row['format']['type']['#prefix'] = '<div class="limit-float">';

        $row['format']['type']['#suffix'] = '</div>';

        $row['format']['limit'] = $limit_items;

        $row['format']['limit']['#default_value'] = (isset($layout->settings['limit']) && isset($layout->settings['limit'][$name])) ? $layout->settings['limit'][$name] : '#';

      }

      // Disable label and format for views.

      if ($entity_type == 'ds_views') {

        $row['label']['#access'] = FALSE;

      }

      // Add region.

      $split = ($view_mode != 'form') ? 7 : 6;

      if ($row['#row_type'] == 'group' && $view_mode == 'form') {

        $split = ($view_mode != 'form') ? 8 : 7;

      }

      $second = array_splice($row, $split);

      $row['region'] = $region;

      $row['region']['#default_value'] = (isset($layout->settings['fields'][$name]) && isset($region_options[$layout->settings['fields'][$name]])) ? $layout->settings['fields'][$name] : 'hidden';

      $row = array_merge($row, $second);

    }

  }

  return $form;

}

/**

 * Returns the region to which a row in the Field UI screen belongs.

 *

 * @param $row

 *   The current row that is being rendered in the Field UI screen.

 */

function ds_field_ui_row_region($row) {

  return isset($row['region']['#value']) ? $row['region']['#value'] : 'hidden';

}

/**

 * Move the view modes so Field UI can handle them.

 */

function ds_field_ui_layouts_validate($form, &$form_state) {

  if (isset($form_state['values']['additional_settings']['modes']['view_modes_custom'])) {

    $form_state['values']['view_modes_custom'] = $form_state['values']['additional_settings']['modes']['view_modes_custom'];

  }

}

/**

 * Change a layout for a given entity.

 *

 * @param $entity_type

 *   The name of the entity.

 * @param $bundle

 *   The name of the bundle.

 * @param $view_mode

 *   The name of the view mode.

 */

function ds_field_ui_layout_change($form, $form_state, $entity_type = '', $bundle = '', $view_mode = '', $new_layout = '') {

  $old_layout = NULL;

  $all_layouts = ds_get_layout_info();

  if (!empty($entity_type) && !empty($bundle) && !empty($view_mode)) {

    $old_layout = ds_get_layout($entity_type, $bundle, $view_mode, FALSE);

  }

  if ($old_layout && isset($all_layouts[$new_layout])) {

    $new_layout_key = $new_layout;

    $new_layout = $all_layouts[$new_layout];

    $form['#entity_type'] = $entity_type;

    $form['#bundle'] = $bundle;

    $form['#view_mode'] = $view_mode;

    $form['#old_layout'] = $old_layout;

    $form['#new_layout'] = $new_layout;

    $form['#new_layout_key'] = $new_layout_key;

    $form['#export_id'] = $entity_type . '|' . $bundle . '|' . $view_mode;

    $form['info'] = array(

      '#markup' => t('You are changing from %old to %new layout for !bundle in !view_mode view mode.', array('%old' => $old_layout['label'], '%new' => $new_layout['label'], '!bundle' => $bundle, '!view_mode' => $view_mode)),

      '#prefix' => "<div class='change_ds_layout_info'>",

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

    );

    // Old region options.

    $regions = array();

    foreach ($old_layout['regions'] as $key => $title) {

      $regions[$key] = $title;

    }

    // Let other modules alter the regions.

    // For old regions.

    $context = array(

      'entity_type' => $entity_type,

      'bundle' => $bundle,

      'view_mode' => $view_mode,

    );

    $region_info = array(

      'region_options' => $regions,

    );

    drupal_alter('ds_layout_region', $context, $region_info);

    $regions = $region_info['region_options'];

    $form['#old_layout']['regions'] = $regions;

    // For new regions.

    $region_info = array(

      'region_options' => $new_layout['regions'],

    );

    drupal_alter('ds_layout_region', $context, $region_info);

    $new_layout['regions'] = $region_info['region_options'];

    $form['#new_layout']['regions'] = $new_layout['regions'];

    // Display the region options

    $selectable_regions = array('' => t('- None -')) + $new_layout['regions'];

    $form['regions_pre']['#markup'] = '<div class="ds-layout-regions">';

    foreach ($regions as $region => $region_title) {

      $form['region_' . $region] = array(

        '#type' => 'container',

      );

      $form['region_' . $region]['ds_label_' . $region] = array(

        '#markup' => 'Fields in <span class="change_ds_layout_old_region"> ' . $region_title . '</span> go into',

      );

      $form['region_' . $region]['ds_' . $region] = array(

        '#type' => 'select',

        '#options' => $layout_options = $selectable_regions,

        '#default_value' => $region,

      );

    }

    $form['regions_post']['#markup'] = '</div>';

    // Show previews from old and new layouts

    $form['preview'] = array(

      '#type' => 'container',

      '#prefix' => '<div class="ds-layout-preview"/>',

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

    );

    $fallback_image = drupal_get_path('module', 'ds') . '/images/preview.png';

    $old_image = (isset($old_layout['image']) &&  !empty($old_layout['image'])) ? $old_layout['path'] . '/' . $old_layout['layout'] . '.png' : $fallback_image;

    if (isset($old_layout['panels']) && !empty($old_layout['panels']['icon'])) {

      $old_image = $old_layout['panels']['path'] . '/' . $old_layout['panels']['icon'];

    }

    $new_image = (isset($new_layout['image']) &&  !empty($new_layout['image'])) ? $new_layout['path'] . '/' . $new_layout_key . '.png' : $fallback_image;

    if (isset($new_layout['panels']) && !empty($new_layout['panels']['icon'])) {

      $new_image = $new_layout['panels']['path'] . '/' . $new_layout['panels']['icon'];

    }

    $arrow = drupal_get_path('module', 'ds') . '/images/arrow.png';

    $form['preview']['old_layout'] = array(

      '#markup' => '<div class="ds-layout-preview-image"><img src="' . base_path() . $old_image . '"/></div>',

    );

    $form['preview']['arrow'] = array(

      '#markup' => '<div class="ds-layout-preview-arrow"><img src="' . base_path() . $arrow . '"/></div>',

    );

    $form['preview']['new_layout'] = array(

      '#markup' => '<div class="ds-layout-preview-image"><img src="' . base_path() . $new_image . '"/></div>',

    );

    $form['#attached']['css'][] = drupal_get_path('module', 'ds') . '/css/ds.admin.css';

    // Submit button

    $form['actions'] = array('#type' => 'actions');

    $form['actions']['submit'] = array(

      '#type' => 'submit',

      '#value' => t('Save'),

      '#prefix' => '<div class="ds-layout-change-save">',

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

    );

  }

  else {

    $form['nothing'] = array('#markup' => t('No valid configuration found.'));

  }

  return $form;

}

/**

 * Submit callback: save the layout change.

 */

function ds_field_ui_layout_change_submit($form, &$form_state) {

  // Prepare some variables.

  $old_layout = $form['#old_layout'];

  $new_layout = $form['#new_layout'];

  $new_layout_key = $form['#new_layout_key'];

  $entity_type = $form['#entity_type'];

  $bundle = $form['#bundle'];

  $view_mode = $form['#view_mode'];

  // Create new record.

  $record = new stdClass();

  $record->id = $form['#export_id'];

  $record->entity_type = $entity_type;

  $record->bundle = $bundle;

  $record->view_mode = $view_mode;

  $record->layout = $new_layout_key;

  $record->settings = $old_layout['settings'];

  unset($record->settings['regions']);

  unset($record->settings['fields']);

  // map old regions to new ones

  foreach ($old_layout['regions'] as $region => $region_title) {

    $new_region = $form_state['values']['ds_' . $region];

    if ($new_region != '' && isset($old_layout['settings']['regions'][$region])) {

      foreach ($old_layout['settings']['regions'][$region] as $field_key => $field) {

        if (!isset($record->settings['regions'][$new_region])) {

          $record->settings['regions'][$new_region] = array();

        }

        $record->settings['regions'][$new_region][] = $field;

        $record->settings['fields'][$field] = $new_region;

      }

    }

  }

  // Remove old record.

  db_delete('ds_layout_settings')

    ->condition('entity_type', $entity_type)

    ->condition('bundle', $bundle)

    ->condition('view_mode', $view_mode)

    ->execute();

  // Save new record.

  drupal_write_record('ds_layout_settings', $record);

  // Clear entity info cache.

  cache_clear_all('entity_info', 'cache', TRUE);

  // Show message.

  drupal_set_message(t('The layout change has been saved.'));

}

/**

 * Save the layout settings from the 'Manage display' screen.

 */

function ds_field_ui_layouts_save($form, &$form_state) {

  $weight = 0;

  // Get default values.

  $entity_type = $form['#entity_type'];

  $bundle = $form['#bundle'];

  $view_mode = $form['#view_mode'];

  // Determine layout variables.

  $layout = $form_state['values']['additional_settings']['layout'];

  $old_layout = $form_state['values']['additional_settings']['old_layout'];

  $new_layout = ($layout != $old_layout) || empty($old_layout);

  // Save layout and add regions if necessary.

  $record = new stdClass;

  $record->id = $form['#export_id'];

  $record->entity_type = $entity_type;

  $record->bundle = $bundle;

  $record->view_mode = $view_mode;

  $record->layout = $layout;

  $record->settings = array();

  $form_state['layout_saved'] = FALSE;

  // Remove old layout if necessary.

  if ($new_layout && !empty($old_layout)) {

    db_delete('ds_layout_settings')

      ->condition('entity_type', $entity_type)

      ->condition('bundle', $bundle)

      ->condition('view_mode', $view_mode)

      ->execute();

  }

  if ($new_layout && !empty($layout)) {

    $form_state['layout_saved'] = TRUE;

    // Save new layout.

    $record->settings = $record->settings;

    // Let other modules alter the layout settings.

    drupal_alter('ds_layout_settings', $record, $form_state);

    // Move current visible fields into a default region, so

    // we keep their current settings.

    $layouts = ds_get_layout_info();

    $sl = $layouts[$layout];

    $first_region = key($sl['regions']);

    $record->settings['regions'] = array();

    $record->settings['fields'] = array();

    $record->settings['classes'] = array();

    $record->settings['wrappers'] = array();

    $record->settings['layout_wrapper'] = 'div';

    $record->settings['layout_attributes'] = '';

    $record->settings['layout_attributes_merge'] = variable_get('ds_layout_attributes_merge', TRUE);

    $record->settings['layout_link_attribute'] = FALSE;

    $record->settings['layout_link_custom'] = '';

    $fields = _ds_sort_fields($form_state['values']['fields'], 'weight');

    foreach ($fields as $field_key => $field) {

      // Ignore new fieldgroup, new field or existing field.

      if (in_array($field_key, array('_add_new_field', '_add_existing_field', '_add_new_group'))) {

        continue;

      }

      // Can either be form or display.

      if ((isset($field['type']) && $field['type'] != 'hidden') || $record->view_mode == 'form') {

        $record->settings['regions'][$first_region][$weight++] = $field_key;

        $record->settings['fields'][$field_key] = $first_region;

      }

    }

    // In case this is the full node view mode and if the comment module

    // is enabled for this content type, add it as well.

    if ($record->entity_type == 'node' && $record->view_mode == 'full' && module_exists('comment')) {

      $record->settings['regions'][$first_region][] = 'comments';

      $record->settings['fields']['comments'] = $first_region;

    }

    // Save the record.

    drupal_write_record('ds_layout_settings', $record);

  }

  // Update existing layout.

  elseif (!empty($layout)) {

    $form_state['layout_saved'] = TRUE;

    $fields = _ds_sort_fields($form_state['values']['fields'], 'weight');

    foreach ($fields as $key => $field) {

      // Make sure we need to save anything for this field.

      if (_ds_field_valid($key, $field, $form_state, $view_mode)) {

        continue;

      }

      if (!isset($record->settings['regions'][$field['region']])) {

        $record->settings['regions'][$field['region']] = array();

      }

      $record->settings['regions'][$field['region']][$weight++] = $key;

      $record->settings['fields'][$key] = $field['region'];

      // Save limit.

      $limit = isset($field['format']['limit']) ? trim($field['format']['limit']) : '';

      if (is_numeric($limit) || $limit === 'delta') {

        $record->settings['limit'][$key] = $limit;

      }

    }

    // Save the region classes.

    $record->settings['classes'] = array();

    foreach (array_keys($form['fields']['#regions']) as $region) {

      // Ignore hidden region.

      if ($region == 'hidden') {

        continue;

      }

      if (isset($form_state['values']['additional_settings']['layout_class'])) {

        $record->settings['classes']['layout_class'] = $form_state['values']['additional_settings']['layout_class'];

      }

      // Additional classes on regions.

      if (isset($form_state['values']['additional_settings'][$region])) {

        // Do not save empty string.

        $classes = is_array($form_state['values']['additional_settings'][$region]) ? implode(' ', $form_state['values']['additional_settings'][$region]) : array();

        if (!empty($classes)) {

          $record->settings['classes'][$region] = $form_state['values']['additional_settings'][$region];

        }

      }

      // Additional wrappers on regions.

      if (isset($form_state['values']['additional_settings']['region_wrapper'][$region])) {

        $record->settings['wrappers'][$region] = $form_state['values']['additional_settings']['region_wrapper'][$region];

      }

    }

    // Layout wrapper

    $record->settings['layout_wrapper'] = $form_state['values']['additional_settings']['region_wrapper']['layout_wrapper'];

    $record->settings['layout_attributes'] = filter_xss_admin($form_state['values']['additional_settings']['region_wrapper']['layout_attributes']);

    $record->settings['layout_attributes_merge'] = $form_state['values']['additional_settings']['region_wrapper']['layout_attributes_merge'];

    // Link attribute.

    $record->settings['layout_link_attribute'] = $form_state['values']['additional_settings']['region_wrapper']['layout_link_attribute'];

    $record->settings['layout_link_custom'] = $form_state['values']['additional_settings']['region_wrapper']['layout_link_custom'];

    $record->settings = $record->settings;

    // Let other modules alter the layout settings.

    drupal_alter('ds_layout_settings', $record, $form_state);

    $l = $form['#ds_layout'];

    if ($l->export_type == 2) {

      drupal_write_record('ds_layout_settings', $record);

    }

    else {

      drupal_write_record('ds_layout_settings', $record, array('id'));

    }

    // Clear entity info cache.

    cache_clear_all('entity_info', 'cache', TRUE);

  }

}

/**

 * Form validation handler for _ds_field_ui_fields().

 */

function ds_field_ui_fields_validate($form, &$form_state) {

  foreach (element_children($form['fields']) as $key) {

    if (isset($form_state['values']['fields'][$key]['settings_edit_form'])) {

      $settings = isset($form_state['values']['fields'][$key]['settings_edit_form']['settings']['ft']) ? $form_state['values']['fields'][$key]['settings_edit_form']['settings']['ft'] : array();

      if (!empty($settings)) {

        $merge = isset($form_state['formatter_settings'][$key]['ft']) ? $form_state['formatter_settings'][$key]['ft'] : array();

        $form_state['formatter_settings'][$key]['ft'] = array_merge($merge, $settings);

      }

    }

  }

}

/**

 * Save the field settings from the 'Manage display' screen.

 */

function ds_field_ui_fields_save($form, &$form_state) {

  // Setup some variables.

  $entity_type = $form['#entity_type'];

  $bundle = $form['#bundle'];

  $view_mode = $form['#view_mode'];

  // Delete previous field configuration configuration.

  db_delete('ds_field_settings')

    ->condition('entity_type', $entity_type)

    ->condition('bundle', $bundle)

    ->condition('view_mode', $view_mode)

    ->execute();

  if (empty($form_state['layout_saved'])) {

    return;

  }

  $field_settings = array();

  // Save settings for each field.

  $fields = $form['#ds_fields'];

  foreach ($fields as $key => $field) {

    // Field settings.

    $field_values = $form_state['values']['fields'][$field];

    // In case the region is hidden, do not save.

    if (isset($field_values['region']) && $field_values['region'] == 'hidden') {

      continue;

    }

    // Build settings.

    $settings = array();

    $settings['weight'] = $field_values['weight'];

    $settings['label'] = $field_values['label'];

    $settings['format'] = $field_values['format']['type'];

    // Any formatter settings.

    if (isset($form_state['formatter_settings'][$field])) {

      $settings['formatter_settings'] = $form_state['formatter_settings'][$field];

    }

    $field_settings[$field] = $settings;

  }

  // Allow other modules to modify the field settings before they get saved.

  drupal_alter('ds_field_settings', $field_settings, $form, $form_state);

  // Save the record.

  if (!empty($field_settings)) {

    $record = new stdClass;

    $record->id = $form['#export_id'];

    $record->entity_type = $entity_type;

    $record->bundle = $bundle;

    $record->view_mode = $view_mode;

    $record->settings = $field_settings;

    drupal_write_record('ds_field_settings', $record);

  }

  // Clear the ds_fields cache.

  cache_clear_all('ds_fields:', 'cache', TRUE);

  cache_clear_all('ds_field_settings', 'cache');

}

/**

 * Clone a fields layout.

 */

function ds_field_ui_layout_clone($form, &$form_state) {

  $clone = $form_state['values']['additional_settings']['clone'];

  $entity_type = $form['#entity_type'];

  $bundle = $form['#bundle'];

  $view_mode = $form['#view_mode'];

  ctools_include('export');

  $layout = ctools_export_crud_load('ds_layout_settings', $clone);

  // Delete previous layout settings configuration.

  db_delete('ds_layout_settings')

    ->condition('entity_type', $entity_type)

    ->condition('bundle', $bundle)

    ->condition('view_mode', $view_mode)

    ->execute();

  // Delete previous field configuration configuration.

  db_delete('ds_field_settings')

    ->condition('entity_type', $entity_type)

    ->condition('bundle', $bundle)

    ->condition('view_mode', $view_mode)

    ->execute();

  // Save new layout record for ds.

  if ($layout) {

    $record = new stdClass();

    $record->id = $form['#export_id'];

    $record->entity_type = $entity_type;

    $record->bundle = $bundle;

    $record->view_mode = $view_mode;

    $record->layout = $layout->layout;

    $record->settings = $layout->settings;

    // Let other modules alter the layout settings.

    drupal_alter('ds_layout_settings', $record, $form_state);

    // Save layout record.

    drupal_write_record('ds_layout_settings', $record);

    // Copy the view mode settings.

    list($ce, $cb, $cv) = explode('|', $clone);

    _ds_field_ui_clone_view_mode_settings($entity_type, $bundle, $view_mode, $cv);

    // Clear entity info cache.

    cache_clear_all('entity_info', 'cache', TRUE);

    // Show message.

    drupal_set_message(t('The layout has been cloned.'));

  }

  else {

    drupal_set_message(t('No layout was cloned.'));

  }

}

/**

 * Populates display settings for a new view mode from the another view mode.

 *

 * This is almost a straight copy from Field UI, but with the addition

 * that we can pass the view mode from which we want to clone from.

 */

function _ds_field_ui_clone_view_mode_settings($entity_type, $bundle, $view_mode, $copy_view_mode) {

  $settings = field_bundle_settings($entity_type, $bundle);

  // Update display settings for field instances.

  $instances = field_read_instances(array('entity_type' => $entity_type, 'bundle' => $bundle));

  foreach ($instances as $instance) {

    // If this field instance has display settings defined for this view mode,

    // respect those settings.

    if (isset($instance['display'][$copy_view_mode])) {

      $instance['display'][$view_mode] = $instance['display'][$copy_view_mode];

      field_update_instance($instance);

    }

  }

  // Update display settings for 'extra fields'.

  foreach (array_keys($settings['extra_fields']['display']) as $name) {

    if (isset($settings['extra_fields']['display'][$name][$copy_view_mode])) {

      $settings['extra_fields']['display'][$name][$view_mode] = $settings['extra_fields']['display'][$name][$copy_view_mode];

    }

  }

  // Save the settings.

  field_bundle_settings($entity_type, $bundle, $settings);

}

/**

 * Implements hook_field_formatter_settings_form().

 */

function ds_field_formatter_settings_form($field, $instance, $view_mode, $form, &$form_state) {

  $display = $instance['display'][$view_mode];

  $settings = $display['settings'];

  // Taxonomy view modes.

  if ($display['type'] === 'ds_taxonomy_view_mode') {

    $options = array();

    $view_modes = ds_entity_view_modes('taxonomy_term');

    foreach ($view_modes as $key => $info) {

      $options[$key] = $info['label'];

    }

    $element['taxonomy_term_reference_view_mode'] = array(

      '#title'   => t('View mode'),

      '#type'    => 'select',

      '#options' => $options,

      '#default_value' => $settings['taxonomy_term_reference_view_mode'],

    );

    $element['use_content_language'] = array(

      '#type' => 'checkbox',

      '#title' => t('Use current content language'),

      '#default_value' => $settings['use_content_language'],

    );

    return $element;

  }

  // Taxonomy separated.

  if ($display['type'] === 'ds_taxonomy_separator' || $display['type'] == 'ds_taxonomy_separator_localized') {

    $element['taxonomy_term_link'] = array(

      '#title' => t('Link to term'),

      '#type' => 'checkbox',

      '#size' => 10,

      '#default_value' => $settings['taxonomy_term_link'],

    );

    $separators = array(

      ' ' => t('space'),

      ', ' => t('comma'),

      ' - ' => t('dash'),

      ' / ' => t('slash'),

    );

    drupal_alter('ds_taxonomy_term_separators', $separators);

    $element['taxonomy_term_separator'] = array(

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

      '#type' => 'select',

      '#options' => $separators,

      '#default_value' => $settings['taxonomy_term_separator'],

      '#states' => array(

        'visible' => array(

          'select[name="fields[field_tags][settings_edit_form][settings][taxonomy_term_list]"]' => array('value' => 'separated_list'),

        ),

      ),

    );

    return $element;

  }

}

/**

 * Implements hook_field_formatter_settings_summary().

 */

function ds_field_formatter_settings_summary($field, $instance, $view_mode) {

  $summary = '';

  $display = $instance['display'][$view_mode];

  $settings = $display['settings'];

  if ($display['type'] === 'ds_taxonomy_view_mode') {

    $entity_info = entity_get_info('taxonomy_term');

    $modes = $entity_info['view modes'];

    $mode = $modes[$settings['taxonomy_term_reference_view_mode']]['label'];

    $summary .= t('View mode: %mode', array('%mode' => $mode)) . '<br />';;

    $summary .= !empty($settings['use_content_language']) ? t('Use current content language') : t('Use field language');

  }

  if ($display['type'] === 'ds_taxonomy_separator' || $display['type'] == 'ds_taxonomy_separator_localized') {

    $separators = array(

      ' ' => t('space'),

      ', ' => t('comma'),

      ' - ' => t('dash'),

      ' / ' => t('slash'),

    );

    drupal_alter('ds_taxonomy_term_separators', $separators);

    $summary .= t('Separated by !sep', array('!sep' => $separators[$settings['taxonomy_term_separator']]));

    $summary .= $settings['taxonomy_term_link'] ? ', ' . t('linked') : ', ' . t('not linked');

  }

  return $summary;

}

/**

 * Creates a summary for the field format configuration summary.

 *

 * @param $field

 *   The configuration of the field.

 *

 * @return $summary

 *   An markup array.

 */

function ds_field_settings_summary($field, $form_state, $form, $view_mode) {

  $summary = '';

  // Not all fields have settings.

  if (isset($field['properties']['settings'])) {

    $summary = module_invoke($field['module'], 'ds_field_format_summary', $field);

  }

  if (module_exists('ds_extras') && variable_get('ds_extras_field_template', FALSE)) {

    module_load_include('inc', 'ds_extras', 'includes/ds_extras.admin');

    // Field template summary

    if (!in_array($field['field_type'], array(DS_FIELD_TYPE_IGNORE, DS_FIELD_TYPE_PREPROCESS))) {

      $functions = module_invoke_all('ds_field_theme_functions_info');

      $default_field_function = variable_get('ft-default', 'theme_field');

      $field_function = isset($form_state['formatter_settings'][$field['name']]['ft']['func']) ? $form_state['formatter_settings'][$field['name']]['ft']['func'] : $default_field_function;

      $summary .= 'Field template: ' . check_plain($functions[$field_function]) . '<br />';

    }

  }

  if (!empty($form_state['complete form'])) {

    $formatter_name = $form_state['complete form']['fields'][$field['name']]['format']['type']['#value'];

  }

  else {

    $formatter_name = $form['fields'][$field['name']]['format']['type']['#default_value'];

  }

  // Allow other modules to alter the formatter summary.

  $context = array(

    'formatter' => $formatter_name,

    'field' => $field,

    'instance' => array(

      'display' => array(

        $view_mode => array(

          'label' => '',

          'type' => '',

          'weight' => '',

          'settings' => isset($field['formatter_settings']) ? $field['formatter_settings'] : array(),

          'module' => '',

        )

      )

    ),

    'view_mode' => $view_mode,

    'ds' => TRUE,

  );

  drupal_alter('field_formatter_settings_summary', $summary, $context);

  if (empty($summary)) {

    return NULL; // no summary return nothing

  }

  return array(

    '#markup' => '<div class="field-formatter-summary">' . $summary . '</div>',

    '#cell_attributes' => array('class' => array('field-formatter-summary-cell')),

  );

}

/**

 * Creates a form for Display Suite fields.

 * .

 * @param $field

 *   The field definition.

 *

 * @return $form

 *   A form definition.

 */

function ds_field_settings_form($field, &$form_state, $entity_form, $view_mode) {

  $form = module_invoke($field['module'], 'ds_field_settings_form', $field);

  // Add field template settings to every field if enabled.

  if (module_exists('ds_extras') && variable_get('ds_extras_field_template', FALSE)) {

    $context = array(

      'instance' => array(

        'entity_type' => $field['entity_type'],

        'bundle' => $field['bundle'],

        'field_name' => $field['name'],

      ),

      'view_mode' => $field['view_mode'],

    );

    // Load the formatter settings form

    module_load_include('inc', 'ds_extras', 'includes/ds_extras.admin');

    // Protect against empty $form.

    if (!is_array($form)) $form = array();

    if (!in_array($field['field_type'], array(DS_FIELD_TYPE_IGNORE, DS_FIELD_TYPE_PREPROCESS))) {

      ds_extras_field_template_settings_form($form, $form_state, $context);

    }

    else {

      $form['#markup'] = t('This field does not support Field templates.');

    }

  }

  $formatter_name = $form_state['complete form']['fields'][$field['name']]['format']['type']['#value'];

  // Allow other modules to alter the formatter settings form.

  $context = array(

    'ds' => TRUE,

    'formatter' => $formatter_name,

    'field' => $field,

    'instance' => array(

      'label' => $field['title'],

      'bundle' => $field['bundle'],

      'entity_type' => $field['entity_type'],

      'display' => array(

        'default' => array(

          'settings' => isset($field['formatter_settings']) ? $field['formatter_settings'] : array(),

        ),

      ),

    ),

    'view_mode' => $view_mode,

    'form' => $entity_form,

    'form_state' => $form_state,

  );

  drupal_alter('field_formatter_settings_form', $form, $context);

  return $form;

}

/**

 * Implements hook_ds_field_format_summary().

 */

function ds_ds_field_format_summary($field) {

  $summary = '';

  $settings = isset($field['formatter_settings']) ? $field['formatter_settings'] : $field['properties']['default'];

  $functions = module_invoke_all('ds_field_theme_functions_info');

  foreach ($settings as $key => $value) {

    // Ignore Field Formatter conditions.

    if ($key == 'conditions') {

      continue;

    }

    if ($key == 'ctools') {

      $conf = unserialize($value);

      $summary .= t('Type: !type', array('!type' => check_plain(drupal_ucfirst(str_replace('_', ' ', $conf['subtype'])))));

    }

    elseif ($key == 'ft' || is_array($value)) {

      // Do nothing

    }

    elseif (!empty($value)) {

      $value = is_numeric($value) ? ($value ? t('Yes') : t('No')) : check_plain($value);

      $summary .= ' ' . str_replace('_', ' ', drupal_ucfirst(check_plain($key))) . ': ' . check_plain($value) . '<br />';

    }

  }

  if (empty($summary) && ($field['field_type'] == DS_FIELD_TYPE_CTOOLS)) {

    $summary .= t('Not configured yet.') . '<br />';

  }

  return $summary;

}

/**

 * Implements hook_ds_field_settings_form().

 */

function ds_ds_field_settings_form($field) {

  $form = array();

  $settings = !empty($field['formatter_settings']) ? $field['formatter_settings'] : (!empty($field['properties']['default']) ? $field['properties']['default'] : array());

  if (empty($field['properties']['settings'])) {

    return $form;

  }

  foreach ($field['properties']['settings'] as $key => $value) {

    switch ($value['type']) {

      case 'textfield':

        $form[$key] = array(

          '#type' => 'textfield',

          '#title' => str_replace('_', ' ', check_plain(drupal_ucfirst($key))),

          '#default_value' => isset($settings[$key]) ? $settings[$key] : '',

          '#size' => 40,

          '#description' => isset($value['description']) ? check_plain($value['description']) : '',

        );

        break;

      case 'select':

        $form[$key] = array(

          '#type' => 'select',

          '#title' => check_plain(drupal_ucfirst($key)),

          '#default_value' => isset($settings[$key]) ? $settings[$key] : '',

          '#options' => $value['options'],

          '#description' => isset($value['description']) ? check_plain($value['description']) : '',

        );

        break;

      case 'checkbox':

        $form[$key] = array(

          '#type' => 'checkbox',

          '#title' => str_replace('_', ' ', check_plain(drupal_ucfirst($key))),

          '#default_value' => isset($settings[$key]) ? $settings[$key] : '',

          '#description' => isset($value['description']) ? check_plain($value['description']) : '',

        );

        break;

      case 'ctools':

        ctools_include('modal');

        ctools_include('object-cache');

        ctools_modal_add_js();

        $form[$key] = array(

          '#type' => 'hidden',

          '#default_value' => isset($settings[$key]) ? $settings[$key] : '',

          '#weight' => 2,

        );

        $action = 'add';

        $args = '';

        $conf = array();

        $query = array('query' => array('selection' => 1));

        $title = t('Select content');

        if (isset($settings[$key])) {

          $query = array();

          $ctools = unserialize($settings['ctools']);

          $type = $ctools['type'];

          $subtype = $ctools['subtype'];

          $args = '/' . $type . '/' . $subtype;

          $action = 'edit';

          $conf = $ctools['conf'];

          $title = t('Edit content');

        }

        $form['select'] = array(

          '#markup' => '<div class="select-content-link">' . l($title, 'admin/structure/ds/fields/manage_ctools/content/' . $action . '/' . $field['entity_type'] . '/' . $field['name'] . $args, array('attributes' => array('class' => array('ctools-use-modal'))) + $query) . '</div>',

          '#weight' => -10,

        );

        $form['load_terms'] = array(

          '#type' => 'checkbox',

          '#title' => t('Load terms'),

          '#description' => t('Toggle if you are embedding a view with term fields.'),

          '#default_value' => isset($settings['load_terms']) ? $settings['load_terms'] : '',

          '#weight' => -1,

        );

        $form['show_title']['#weight'] = 0;

        $form['title_wrapper']['#weight'] = 1;

        ctools_object_cache_set($field['name'], $field['name'], $conf);

        break;

    }

  }

  return $form;

}

/**

 * Add entity contexts.

 */

function ds_get_entity_context($entity_type) {

  ctools_include('context');

  $arguments = array(

    array(

      'keyword' => $entity_type,

      'identifier' => drupal_ucfirst($entity_type) . ' being viewed',

      'id' => 1,

      'name' => 'entity_id:' . $entity_type,

      'settings' => array(),

    ),

  );

  return ctools_context_get_placeholders_from_argument($arguments);

}

/**

 * Return the configuration settings for the CTools field.

 */

function ds_ctools_content($action = 'add', $entity_type = '', $field_name = '', $type_name = '', $subtype_name = '', $step = NULL) {

  ctools_include('modal');

  ctools_include('ajax');

  ctools_include('content');

  ctools_include('object-cache');

  $commands = array();

  $content_type = ctools_get_content_type($type_name);

  $subtype = ctools_content_get_subtype($content_type, $subtype_name);

  if ($data = ctools_object_cache_get($field_name, $field_name)) {

    $conf = $data;

  }

  else {

    $conf = ctools_content_get_defaults($content_type, $subtype);

  }

  $url = 'admin/structure/ds/fields/manage_ctools/content/' . $action . '/' . $entity_type . '/' . $field_name;

  $base_url = $url;

  if (!empty($type_name) && !empty($subtype_name)) {

    $url .= '/' . $type_name . '/' . $subtype_name . '/%step';

  }

  $form_info = array(

    'path' => $url,

    'show cancel' => TRUE,

    'next callback' => 'ds_ctools_content_next',

  );

  // Get entity context.

  $contexts = ds_get_entity_context($entity_type);

  $form_state = array(

    'contexts' => $contexts,

    'ajax' => TRUE,

    'modal' => TRUE,

    'modal return' => TRUE,

    'field_name' => $field_name,

  );

  // Call the content form.

  $output = ctools_content_form($action, $form_info, $form_state, $content_type, $subtype_name, $subtype, $conf, $step);

  if (!empty($form_state['complete']) || isset($_GET['dismiss'])) {

    $configuration = array(

      'conf' => $form_state['conf'],

      'type' => $type_name,

      'subtype' => $subtype_name,

    );

    $commands[] = ctools_modal_command_dismiss();

    $commands[] = ajax_command_invoke('input[name="fields[' . $field_name . '][settings_edit_form][settings][ctools]"]', 'dsCtoolsContentConfiguration', array(serialize($configuration)));

    $commands[] = ajax_command_invoke('.select-content-link', 'dsCtoolsContentUpdate', array(serialize($configuration)));

    ctools_object_cache_clear($field_name, $field_name);

  }

  // Content selection

  elseif (!empty($form_state['cancel']) || isset($_GET['selection'])) {

    ctools_object_cache_clear($field_name, $field_name);

    $commands[] = ds_ctools_content_select($contexts, $field_name, $action, $entity_type);

  }

  // No configuration anymore.

  elseif ($output === FALSE && !isset($_GET['dismiss'])) {

    $output = t('No further configuration exists for this content type.<br/><br/><a href="!close_modal" class="use-ajax">Click here to close the modal and save the settings.</a><br/><br/><a href="!new_content" class="use-ajax">Click here to select new content</a>.', array('!new_content' => url($base_url, array('query' => array('selection' => TRUE))), '!close_modal' => url($url, array('query' => array('dismiss' => 1)))));

    $commands[] = ctools_modal_command_display(t('Edit content'), $output);

  }

  // Form render.

  else {

    $commands = ctools_modal_form_render($form_state, $output);

  }

  print ajax_render($commands);

  ajax_footer();

  exit;

}

/**

 * Handle the 'next' click on the add/edit field form wizard.

 */

function ds_ctools_content_next(&$form_state) {

  ctools_object_cache_set($form_state['field_name'], $form_state['field_name'], $form_state['conf']);

}

/**

 * Select content.

 *

 * @param $contexts

 *   A collection of contexts, usually the entity.

 * @param $field_name

 *   The name of the field.

 * @param $action

 *   The name of the action.

 * @param $entity_type

 *   The name of the entity type.

 */

function ds_ctools_content_select($contexts, $field_name, $action, $entity_type) {

  // Get content types.

  $content_types = ctools_content_get_available_types($contexts);

  $categories = $category_names = $ordered = array();

  foreach ($content_types as $type_name => $subtypes) {

    foreach ($subtypes as $subtype_name => $content_type) {

      list($category_key, $category) = ds_ctools_get_category($content_type);

      if (empty($categories[$category_key])) {

        $categories[$category_key] = array(

          'title' => $category,

          'content' => array(),

        );

        $category_names[$category_key] = $category;

      }

      $content_title = filter_xss_admin($content_type['title']);

      // Ensure content with the same title doesn't overwrite each other.

      while (isset($categories[$category_key]['content'][$content_title])) {

        $content_title .= '-';

      }

      $categories[$category_key]['content'][$content_title] = $content_type;

      $categories[$category_key]['content'][$content_title]['type_name'] = $type_name;

      $categories[$category_key]['content'][$content_title]['subtype_name'] = $subtype_name;

    }

  }

  // Now sort

  natcasesort($category_names);

  foreach ($category_names as $category => $name) {

    $ordered[$category] = $categories[$category];

  }

  $left = '';

  $right = '<div class="content">' . t('Content options are divided by category. Please select a category from the left to proceed.') . '</div>';

  foreach ($ordered as $section => $section_content) {

    // Section.

    if ($section == 'root') {

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

    }

    $left .= '<div class="section"><a href="" id="' . $section . '" class="section-link">' . $section_content['title'] . '</a></div>';

    // Content.

    $right .= '<div id="' . $section . '-container" class="selection-hide content">';

    $right .= '<h2>' . $section_content['title'] . '</h2>';

    foreach ($section_content['content'] as $key => $value) {

      $right .= '<div class="content-item">';

      $variables = array(

        'path' => ctools_content_admin_icon($value),

      );

      $right .= theme('image', $variables) . ' ';

      $right .= ctools_ajax_text_button($key, 'admin/structure/ds/fields/manage_ctools/content/' . $action . '/' . $entity_type . '/' . $field_name . '/' . $value['type_name'] . '/' . $value['subtype_name'], $key);

      $right .= '</div>';

    }

    $right .= '</div>';

  }

  // Create output.

  $output = '<div id="ctools-content-selection">';

  $output .= '<div id="ds-left">' . $left . '</div>';

  $output .= '<div id="ds-right">' . $right . '</div>';

  $output .= '</div>';

  return ctools_modal_command_display(t('Select content'), $output);

}

/**

 * Helper function to get the category.

 */

function ds_ctools_get_category($content_type) {

  if (isset($content_type['top level'])) {

    $category = 'root';

  }

  elseif (isset($content_type['category'])) {

    if (is_array($content_type['category'])) {

      list($category, $weight) = $content_type['category'];

    }

    else {

      $category = $content_type['category'];

    }

  }

  else {

    $category = t('Uncategorized');

  }

  return array(preg_replace('/[^a-z0-9]/', '-', drupal_strtolower($category)), $category);

}

/**

 * Add fake field group value in.

 */

function _ds_field_group_field_ui_fix_notices($form, &$form_state) {

  $field_group = array(

    'group_name' => '',

    'label' => '',

  );

  $form_state['values']['fields']['_add_new_group'] = $field_group;

}

/**

 * Add the layouts fieldset on the Field UI screen.

 *

 * @param $entity_type

 *   The name of the entity type.

 * @param $bundle

 *   The name of the bundle

 * @param $view_mode

 *   The name of the view_mode

 * @param $form

 *   A collection of form properties.

 */

function _ds_field_ui_table_layouts($entity_type, $bundle, $view_mode, &$form, $form_state) {

  $layout_options = array();

  $ds_layouts = ds_get_layout_info();

  $layout_options = array('' => t('- None -'));

  foreach ($ds_layouts as $key => $layout) {

    $optgroup = 'Display Suite';

    // Panels can not be used on Views fields and forms.

    if (!empty($layout['module']) && $layout['module'] == 'panels' && isset($form_state['no_panels'])) {

      continue;

    }

    // Create new layout option group.

    if (!empty($layout['module'])) {

      $optgroup = drupal_ucfirst($layout['module']);

    }

    if (!isset($layout_options[$optgroup])) {

      $layout_options[$optgroup] = array();

    }

    // Stack the layout.

    $layout_options[$optgroup][$key] = $layout['label'];

  }

  // If there is only one $optgroup, move it to the root.

  if (count($layout_options) == 2) {

    $options = $layout_options[$optgroup];

    $layout_options = array_merge(array('' => t('- None -')), $options);

  }

  // Add layouts form.

  $form['additional_settings']['ds_layouts'] = array(

    '#type' => 'fieldset',

    '#title' => t('Layout for !bundle in !view_mode', array('!bundle' => str_replace('_', ' ', $bundle), '!view_mode' => str_replace('_', ' ', $view_mode))),

    '#collapsible' => TRUE,

    '#collapsed' => FALSE,

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