function media_gallery_block_view in Media Gallery 7

Same name and namespace in other branches

1. 7.2 media_gallery.module \media_gallery_block_view()

Implements hook_block_view().

File

./media_gallery.module, line 606

Code

function media_gallery_block_view($delta = '') {
  $node = node_load($delta);
  if (empty($node->media_gallery_expose_block[LANGUAGE_NONE][0]['value'])) {

    // Bail out now if the node doesn't exist or if it is configured not to
    // display a block.
    $block['subject'] = NULL;
    $block['content'] = '';
  }
  elseif (empty($node->media_gallery_media_original) || !media_access('view')) {

    // Bail out now if there won't be any media items to show.
    $block['subject'] = check_plain($node->title);
    $block['content'] = t('No content available.');
  }
  else {

    // Collect an array of file IDs associated with this gallery. For
    // simplicity we will assume (here and below) that this is not a
    // multilingual field. Also note that the node may have been loaded and
    // viewed elsewhere on the page, in which case the 'media_gallery_media'
    // field was modified and does not contain what we want, so we have to go
    // back to the original field value set in hook_node_load() instead, and
    // also clone the node before changing it so our modifications do not
    // affect other places where it might be being viewed.
    $node = clone $node;
    $node->media_gallery_media = $node->media_gallery_media_original;
    $files =& $node->media_gallery_media[LANGUAGE_NONE];
    $gallery_fids = array();
    foreach ($files as $file) {
      $gallery_fids[] = _media_gallery_get_media_fid($file);
    }

    // Construct a list of file IDs that is limited to the specified number of
    // items and ordered by most recent; these are the files that will be
    // displayed in the block.
    $columns = !empty($node->media_gallery_block_columns[LANGUAGE_NONE][0]['value']) ? $node->media_gallery_block_columns[LANGUAGE_NONE][0]['value'] : 1;
    $rows = !empty($node->media_gallery_block_rows[LANGUAGE_NONE][0]['value']) ? $node->media_gallery_block_rows[LANGUAGE_NONE][0]['value'] : 1;
    $number_to_show = $columns * $rows;
    $block_fids = db_select('file_managed', 'f')
      ->fields('f', array(
      'fid',
    ))
      ->condition('fid', $gallery_fids, 'IN')
      ->orderBy('timestamp', 'DESC')
      ->range(0, $number_to_show)
      ->execute()
      ->fetchCol();

    // Before sorting, remove any items that will not display in the block.
    $fid_order = array_flip($block_fids);
    if ($number_to_show < count($files)) {
      foreach ($files as $key => $file) {
        if (!isset($fid_order[_media_gallery_get_media_fid($file)])) {
          unset($files[$key]);
        }
      }
    }

    // Prepare the sorting function with the list of file ID orders.
    _media_gallery_sort_by_recent(NULL, NULL, $fid_order);

    // Perform the sort.
    usort($files, '_media_gallery_sort_by_recent');

    // Display the block.
    $block['subject'] = check_plain($node->title);
    $block['content']['gallery'] = node_view($node, 'media_gallery_block');

    // Move the node's contextual links so that they display on the block
    // rather than the node (i.e., in the same dropdown as the "Configure
    // block" link). This is also required in order to properly integrate with
    // the code in media_gallery_contextual_links_view_alter().
    if (isset($block['content']['gallery']['#contextual_links'])) {
      $block['content']['#contextual_links'] = $block['content']['gallery']['#contextual_links'];
      unset($block['content']['gallery']['#contextual_links']);
    }
    $block['content']['more_link'] = array(
      '#theme' => 'more_link',
      '#url' => 'node/' . $node->nid,
      '#title' => t('Show the complete gallery'),
      '#weight' => 1000,
    );
  }
  return $block;
}