Club Drupal

/**

 * Menu callback; Edit multiple files on the same page using multiform module.

 *

 * @todo When http://drupal.org/node/1227706 is fixed, filter the $files

 * array using file_access($file, 'edit').

 *

 * @see media_file_operation_edit_multiple()

 */

function media_file_page_edit_multiple($files) {

  if (empty($files)) {

    return MENU_ACCESS_DENIED;

  }

  $forms = array();

  foreach ($files as $file) {

    // To maintain unique form_ids, append the file id.

    $forms[] = array('media_edit_' . $file->fid, $file);

  }

  $form = call_user_func_array('multiform_get_form', $forms);

  $form['#attributes']['class'][] = 'media-multiedit-form';

  // Add the title to each 'subform'.

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

    $fid = $form['multiform'][$key]['fid']['#value'];

    $file = $files[$fid];

    $title = t('<em>Edit @type</em> @title', array('@type' => $file->type, '@title' => $file->filename));

    $form['multiform'][$key]['#prefix'] = '<h2>' . $title . '</h2>';

    $form['multiform'][$key]['actions']['#access'] = FALSE;

  }

  if (isset($form['buttons']['Delete'])) {

    $form['buttons']['Delete']['#access'] = FALSE;

  }

  // Add a cancel button at the bottom of the form.

  $form['buttons']['cancel'] = array(

    '#type' => 'link',

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

    '#weight' => 50,

  );

  if (isset($_GET['destination'])) {

    $form['buttons']['cancel']['#href'] = $_GET['destination'];

  }

  else if (user_access('administer files')) {

    $form['buttons']['cancel']['#href'] = 'admin/content/file';

  }

  else {

    $form['buttons']['cancel']['#href'] = '<front>';

  }

  // Override the page title since each file form sets a title.

  drupal_set_title(t('Edit multiple files'));

  // Allow other modules to alter the form.

  drupal_alter('media_edit_multiple_form', $form);

  return $form;

}

/**

 * File type migration page.

 *

 * Allows site administrator to execute migration of old/disabled/deleted

 * file types to new ones.

 */

function media_upgrade_file_types($form, &$form_state) {

  $migratable_types = _media_get_migratable_file_types();

  // Silently return if there are no file types that need migration.

  if (empty($migratable_types)) {

    return array(

      'message' => array(

        '#markup' => t('There are no file types that need migration.'),

      ),

    );

  }

  $form['message'] = array(

    'message' => array(

      '#markup' => t('This page allows you to migrate deprecated and/or disabled file types to new ones. It will migrate files from old type to new one and optionally migrate fields and delete old type.'),

    ),

  );

  $form['migrate_fields'] = array(

    '#type' => 'checkbox',

    '#title' => t('Migrate fields'),

    '#default_value' => TRUE,

    '#description' => t('Migrate fields and their values from old file types to new ones.'),

  );

  $form['delete_old_type'] = array(

    '#type' => 'checkbox',

    '#title' => t('Delete old type'),

    '#default_value' => FALSE,

    '#description' => t('Delete old file type if migration was successful and delete operation is possible (type is not exported in code).'),

  );

  $form['migrate_mimes'] = array(

    '#type' => 'checkbox',

    '#title' => t('Migrate type mime-type'),

    '#default_value' => TRUE,

    '#description' => t('Move mime-type from old type to new one.'),

  );

  $form['upgradable_types'] = array(

    '#type' => 'fieldset',

    '#title' => t('Upgradable file types'),

  );

  $options = array('- ' . t('Do not upgrade') . ' -');

  foreach (file_type_get_enabled_types() as $type) {

    $options[$type->type] = $type->label;

  }

  foreach ($migratable_types as $machine_name) {

    $type = file_type_load($machine_name);

    if (!$type) {

      $type = new stdClass;

      $type->label = $type->type = $machine_name;

    }

    $form['upgradable_types'][$machine_name] = array(

      '#type' => 'select',

      '#title' => $type->label,

      '#options' => $options,

      '#description' => t(

        'Select file type which you want to migrate @type to. Select %no_upgrade if type should stay as it is.',

        array('@type' => $type->label, '%no_upgrade' => '- ' . t('Do not upgrade') . ' -')),

    );

  }

  $form['submit'] = array(

    '#type' => 'submit',

    '#value' => t('Start migraton'),

  );

  return $form;

}

/**

 * File type migration page submit handler.

 */

function media_upgrade_file_types_submit($form, &$form_state) {

  $migratable_types = _media_get_migratable_file_types();

  $migrate = FALSE;

  foreach ($migratable_types as $type) {

    if ($form_state['values'][$type]) {

      $migrate = TRUE;

      break;

    }

  }

  // Return silently if no types were selected for migration.

  if (!$migrate) {

    return;

  }

  // Use confirmation page/form.

  $query = $form_state['values'];

  unset($query['op']);

  unset($query['submit']);

  unset($query['form_id']);

  unset($query['form_token']);

  unset($query['form_build_id']);

  $form_state['redirect'] = array(

    'admin/structure/file-types/upgrade/confirm',

    array('query' => $query),

  );

}

/**

 * File types migration confirmation page.

 */

function media_upgrade_file_types_confirm($form, &$form_state) {

  return confirm_form(

    $form,

    t('Do you really want to migrate selected file types?'),

    'admin/structure/file-types/upgrade',

    NULL,

    t('Migrate')

  );

}

/**

 * File types migration confirmation page sumit. Executes actual migration.

 */

function media_upgrade_file_types_confirm_submit($form, &$form_state) {

  $migratable_types = _media_get_migratable_file_types();

  foreach ($migratable_types as $type) {

    if ($_GET[$type] && $bundle_new = file_type_load($_GET[$type])) {

      // Old bundle might be deleted so let's fake some values.

      $bundle_old = file_type_load($type);

      if (empty($bundle_old)) {

        $bundle_old = new stdClass;

        $bundle_old->type = $type;

        $bundle_old->mimetypes = array();

        $bundle_old->export_type = 2;

      }

      // Migrate fields to new bundle.

      if ($_GET['migrate_fields']) {

        $old_fields = db_select('field_config_instance', 'fc')->fields('fc', array('field_name'))->condition('entity_type',  'file')->condition('bundle', $bundle_old->type)->execute()->fetchCol();

        $new_fields = db_select('field_config_instance', 'fc')->fields('fc', array('field_name'))->condition('entity_type',  'file')->condition('bundle', $bundle_new->type)->execute()->fetchCol();

        $fields_to_move = array_diff($old_fields, $new_fields);

        $fields_to_drop = array_diff($old_fields, $fields_to_move);

        db_update('field_config_instance')

          ->fields(array('bundle' => $bundle_new->type))

          ->condition('entity_type',  'file')

          ->condition('bundle', $bundle_old->type)

          ->condition('field_name', $fields_to_move, 'IN')

          ->execute();

        db_delete('field_config_instance')

          ->condition('entity_type',  'file')

          ->condition('bundle', $bundle_old->type)

          ->condition('field_name', $fields_to_drop, 'IN')

          ->execute();

        field_cache_clear();

        module_invoke_all('field_attach_rename_bundle', 'file', $bundle_old->type, $bundle_new->type);

      }

      // Migrate mimetypes to new bundle.

      if ($_GET['migrate_mimes']) {

        $changed = FALSE;

        foreach ($bundle_old->mimetypes as $mime) {

          if (!file_entity_match_mimetypes($bundle_new->mimetypes, $mime)) {

            $bundle_new->mimetypes[] = $mime;

            $changed = TRUE;

          }

        }

        if ($changed) {

          file_type_save($bundle_new);

        }

      }

      // Delete old bundle.

      if ($_GET['delete_old_type'] && $bundle_old->export_type == 1) {

        file_type_delete($bundle_old);

      }

      // Migrate files.

      db_update('file_managed')

        ->fields(array('type' => $bundle_new->type))

        ->condition('type', $bundle_old->type)

        ->execute();

    }

  }

  $form_state['redirect'] = 'admin/structure/file-types';

}