views_handler_field_comment_node_link.inc

<?php


/**
 * @file
 * Definition of views_handler_field_comment_node_link.
 */

/**
 * Handler for showing comment module's node link.
 *
 * @ingroup views_field_handlers
 */
class views_handler_field_comment_node_link extends views_handler_field_entity {
    
    /**
     * {@inheritdoc}
     */
    public function construct() {
        parent::construct();
        // Add the node fields that comment_link will need.
        $this->additional_fields['nid'] = array(
            'field' => 'nid',
        );
        $this->additional_fields['type'] = array(
            'field' => 'type',
        );
        $this->additional_fields['comment'] = array(
            'field' => 'comment',
        );
    }
    
    /**
     * {@inheritdoc}
     */
    public function option_definition() {
        $options = parent::option_definition();
        $options['teaser'] = array(
            'default' => FALSE,
            'bool' => TRUE,
        );
        return $options;
    }
    
    /**
     * {@inheritdoc}
     */
    public function options_form(&$form, &$form_state) {
        $form['teaser'] = array(
            '#type' => 'checkbox',
            '#title' => t('Show teaser-style link'),
            '#default_value' => $this->options['teaser'],
            '#description' => t('Show the comment link in the form used on standard node teasers, rather than the full node form.'),
        );
        parent::options_form($form, $form_state);
    }
    
    /**
     * {@inheritdoc}
     */
    public function query() {
        $this->ensure_my_table();
        $this->add_additional_fields();
    }
    
    /**
     * {@inheritdoc}
     */
    public function render($values) {
        // Build fake $node.
        $node = $this->get_value($values);
        // Call comment.module's hook_link:
        //   comment_link($type, $node = NULL, $teaser = FALSE)
        // Call node by reference so that something is changed here.
        comment_node_view($node, $this->options['teaser'] ? 'teaser' : 'full');
        // Question: should we run these through:
        //   drupal_alter('link', $links, $node);
        // Might this have unexpected consequences if these hooks expect items in
        // $node that we don't have?
        // Only render the links, if they are defined.
        return !empty($node->content['links']['comment']) ? drupal_render($node->content['links']['comment']) : '';
    }

}