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<?php

/**

 * @file

 * Display Suite test module.

 */

/**

 * Implements hook_install().

 */

function ds_test_install() {

  variable_set('ds_extras_region_to_block', TRUE);

  variable_set('ds_extras_switch_view_mode', TRUE);

  variable_set('ds_extras_hide_page_title', TRUE);

  variable_set('ds_extras_field_template', TRUE);

  variable_set('ds_extras_fields_extra', TRUE);

  variable_set('ds_extras_hide_page_sidebars', TRUE);

  variable_set('ds_extras_fields_extra_list', "node|article|ds_extras_extra_test_field\nnode|article|ds_extras_second_field");

  variable_set('ds_extras_vd', TRUE);

  db_update('system')

    ->fields(array('weight' => 2))

    ->condition('name', 'ds_test')

    ->execute();

}

/**

 * Implements hook_views_api().

 */

function ds_test_views_api($module, $api) {

  if ($module == 'views' && $api == 'views_default') {

    return array('version' => 3);

  }

}

/**

 * Helper function to return the tag name basid on tid.

 */

function ds_test_get_tag_name($raw_value, $object) {

  $term = taxonomy_term_load($raw_value);

  return $term->name;

}

/**

 * Helper function to return advanced view mode.

 */

function ds_views_row_adv_ds_testing($entity, $view_mode, $load_comments) {

  return 'Advanced display for id ' . $entity->nid;

}

/**

 * Implements hook_field_extra_fields().

 */

function ds_test_field_extra_fields() {

  $extra = array();

  // Register a single field to test that

  // extra fields in the hidden region are really hidden.

  $extra['node']['article']['display']['heavy_field'] = array(

   'label' => t('Heavy extra test field'),

   'weight' => 10,

  );

  return $extra;

}

/**

 * Implements hook_node_view().

 */

function ds_test_node_view($node, $view_mode, $langcode) {

  $node->content['ds_extras_extra_test_field'] = array(

    '#markup' => 'This is an extra field made available through "Extra fields" functionality.',

    '#weight' => 10,

  );

  // Check whether the heavy extra field is rendered or not.

  if ($node->type == 'article') {

    $fields = field_extra_fields_get_display('node', 'article', $view_mode);

    if (isset($fields['heavy_field']) && $fields['heavy_field']['visible']) {

      $node->content['heavy_field'] = array(

        '#markup' => 'Heavy field',

        '#weight' => $fields['heavy_field']['weight'],

      );

    }

  }

}

/**

 * Implements hook_ds_layout_info_alter().

 */

function ds_test_ds_layout_info_alter(&$layouts) {

  unset($layouts['ds_3col_stacked_equal_width']);

}

/**

 * Implements hook_ds_fields_info().

 */

function ds_test_ds_fields_info($entity_type) {

  if ($entity_type == 'node') {

    $fields['node']['ds_test_field'] = array(

      'title' => t('Test code field from hook'),

      'field_type' => DS_FIELD_TYPE_FUNCTION,

      'function' => 'dstest_render_test_field',

    );

    $fields['node']['ds_test_field_2'] = array(

      'title' => t('Test code field from hook 2'),

      'field_type' => DS_FIELD_TYPE_FUNCTION,

      'function' => 'dstest_render_test_field',

    );

    $fields['node']['ds_test_field_empty_string'] = array(

      'title' => t('Test code field that returns an empty string'),

      'field_type' => DS_FIELD_TYPE_FUNCTION,

      'function' => 'dstest_render_empty_string',

    );

    $fields['node']['ds_test_field_false'] = array(

      'title' => t('Test code field that returns FALSE'),

      'field_type' => DS_FIELD_TYPE_FUNCTION,

      'function' => 'dstest_render_false',

    );

    $fields['node']['ds_test_field_null'] = array(

      'title' => t('Test code field that returns NULL'),

      'field_type' => DS_FIELD_TYPE_FUNCTION,

      'function' => 'dstest_render_null',

    );

    $fields['node']['ds_test_field_nothing'] = array(

      'title' => t('Test code field that returns nothing'),

      'field_type' => DS_FIELD_TYPE_FUNCTION,

      'function' => 'dstest_render_nothing',

    );

    $fields['node']['ds_test_field_zero_int'] = array(

      'title' => t('Test code field that returns zero as an integer'),

      'field_type' => DS_FIELD_TYPE_FUNCTION,

      'function' => 'dstest_render_zero_int',

    );

    $fields['node']['ds_test_field_zero_string'] = array(

      'title' => t('Test code field that returns zero as a string'),

      'field_type' => DS_FIELD_TYPE_FUNCTION,

      'function' => 'dstest_render_zero_string',

    );

    $fields['node']['ds_test_field_zero_float'] = array(

      'title' => t('Test code field that returns zero as a floating point number'),

      'field_type' => DS_FIELD_TYPE_FUNCTION,

      'function' => 'dstest_render_zero_float',

    );

    return $fields;

  }

}

/**

 * Implements hook_ds_field_theme_functions_info().

 */

function ds_test_ds_field_theme_functions_info() {

  return array('ds_test_theming_function' => t('Field test function'));

}

/**

 * Theme field test function.

 */

function ds_test_theming_function($variables) {

  return 'Testing field output through custom function';

}

/**

 * Render the test code field.

 */

function dstest_render_test_field($field) {

  return 'Test code field on node ' . $field['entity']->nid;

}

/**

 * Test code field that returns an empty string.

 */

function dstest_render_empty_string() {

  return '';

}

/**

 * Test code field that returns FALSE.

 */

function dstest_render_false() {

  return FALSE;

}

/**

 * Test code field that returns NULL.

 */

function dstest_render_null() {

  return NULL;

}

/**

 * Test code field that returns nothing.

 */

function dstest_render_nothing() {

  return;

}

/**

 * Test code field that returns zero as an integer.

 */

function dstest_render_zero_int() {

  return 0;

}

/**

 * Test code field that returns zero as a string.

 */

function dstest_render_zero_string() {

  return '0';

}

/**

 * Test code field that returns zero as a floating point number.

 */

function dstest_render_zero_float() {

  return 0.0;

}

/**

 * Implements hook_ds_fields_info_alter().

 */

function ds_test_ds_fields_info_alter(&$fields, $entity_type) {

  if (isset($fields['ds_test_field_2'])) {

    $fields['ds_test_field_2']['title'] = 'Field altered';

  }

}

/**

 * Implements hook_ds_layouts_info().

 */

function ds_test_ds_layout_info() {

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

  $layouts = array(

    'dstest_1col' => array(

      'label' => t('Test One column'),

      'path' => $path . '/dstest_1col',

      'regions' => array(

        'ds_content' => t('Content'),

      ),

    ),

    'dstest_2col' => array(

      'label' => t('Test Two column'),

      'path' => $path . '/dstest_2col',

      'regions' => array(

        'left' => t('Left'),

        'right' => t('Right')

      ),

      'css' => TRUE,

    ),

  );

  return $layouts;

}

/**

 * Implements hook_form_FORM_ID_alter().

 */

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

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

    if (isset($form['fields'][$key]['settings_edit'])) {

      $settings = $form['fields'][$key]['settings_edit'];

      if (!empty($settings)) {

        $form['fields'][$key]['settings_edit']['#type'] = 'submit';

        $form['fields'][$key]['settings_edit']['#value'] = 'edit ' . $key;

      }

    }

  }

}

/**

 * Implements hook_ds_pre_render_alter().

 */

function ds_test_ds_pre_render_alter(&$layout_render_array, $context) {

  $entity = $context['entity'];

  if (isset($entity->title) && $entity->title === 'Alter me!') {

    $layout_render_array['left'][] = array('#markup' => 'cool!', '#weight' => 20);

  }

}