class views_plugin_row_comment_rss

class views_plugin_row_comment_rss extends views_plugin_row {
    
    /**
     * {@inheritdoc}
     */
    public $base_table = 'comment';
    
    /**
     * {@inheritdoc}
     */
    public $base_field = 'cid';
    
    /**
     * {@inheritdoc}
     */
    public function option_definition() {
        $options = parent::option_definition();
        $options['item_length'] = array(
            'default' => 'default',
        );
        $options['links'] = array(
            'default' => FALSE,
            'bool' => TRUE,
        );
        return $options;
    }
    
    /**
     * {@inheritdoc}
     */
    public function options_form(&$form, &$form_state) {
        parent::options_form($form, $form_state);
        $form['item_length'] = array(
            '#type' => 'select',
            '#title' => t('Display type'),
            '#options' => $this->options_form_summary_options(),
            '#default_value' => $this->options['item_length'],
        );
        $form['links'] = array(
            '#type' => 'checkbox',
            '#title' => t('Display links'),
            '#default_value' => $this->options['links'],
        );
    }
    
    /**
     * {@inheritdoc}
     */
    public function pre_render($result) {
        $cids = array();
        $nids = array();
        foreach ($result as $row) {
            $cids[] = $row->cid;
        }
        $this->comments = comment_load_multiple($cids);
        foreach ($this->comments as &$comment) {
            $comment->depth = count(explode('.', $comment->thread)) - 1;
            $nids[] = $comment->nid;
        }
        unset($comment);
        $this->nodes = node_load_multiple($nids);
    }
    
    /**
     * Return the main options, which are shown in the summary title.
     *
     * @see views_plugin_row_node_rss::options_form_summary_options()
     * @todo Maybe provide a views_plugin_row_rss_entity and reuse this method
     * in views_plugin_row_comment|node_rss.inc
     */
    public function options_form_summary_options() {
        $entity_info = entity_get_info('node');
        $options = array();
        if (!empty($entity_info['view modes'])) {
            foreach ($entity_info['view modes'] as $mode => $settings) {
                $options[$mode] = $settings['label'];
            }
        }
        $options['title'] = t('Title only');
        $options['default'] = t('Use site default RSS settings');
        return $options;
    }
    
    /**
     * {@inheritdoc}
     */
    public function render($row) {
        global $base_url;
        $cid = $row->{$this->field_alias};
        if (!is_numeric($cid)) {
            return;
        }
        $item_length = $this->options['item_length'];
        if ($item_length == 'default') {
            $item_length = variable_get('feed_item_length', 'teaser');
        }
        // Load the specified comment and its associated node.
        $comment = $this->comments[$cid];
        if (empty($comment) || empty($this->nodes[$comment->nid])) {
            return;
        }
        $item_text = '';
        $uri = entity_uri('comment', $comment);
        $comment->link = url($uri['path'], $uri['options'] + array(
            'absolute' => TRUE,
        ));
        $comment->rss_namespaces = array();
        $comment->rss_elements = array(
            array(
                'key' => 'pubDate',
                'value' => gmdate('r', $comment->created),
            ),
            array(
                'key' => 'dc:creator',
                'value' => format_username($comment),
            ),
            array(
                'key' => 'guid',
                'value' => 'comment ' . $comment->cid . ' at ' . $base_url,
                'attributes' => array(
                    'isPermaLink' => 'false',
                ),
            ),
        );
        // The comment gets built and modules add to or modify
        // $comment->rss_elements and $comment->rss_namespaces.
        $build = comment_view($comment, $this->nodes[$comment->nid], 'rss');
        unset($build['#theme']);
        if (!empty($comment->rss_namespaces)) {
            $this->view->style_plugin->namespaces = array_merge($this->view->style_plugin->namespaces, $comment->rss_namespaces);
        }
        // Hide the links if desired.
        if (!$this->options['links']) {
            hide($build['links']);
        }
        if ($item_length != 'title') {
            // We render comment contents and force links to be last.
            $build['links']['#weight'] = 1000;
            $item_text .= drupal_render($build);
        }
        $item = new stdClass();
        $item->description = $item_text;
        $item->title = $comment->subject;
        $item->link = $comment->link;
        $item->elements = $comment->rss_elements;
        $item->cid = $comment->cid;
        return theme($this->theme_functions(), array(
            'view' => $this->view,
            'options' => $this->options,
            'row' => $item,
        ));
    }

}