views_handler_field_history_user_timestamp.inc

<?php


/**
 * @file
 * Definition of views_handler_field_history_user_timestamp.
 */

/**
 * Field handler to display the marker for new content.
 *
 * The handler is named history_user, because of compability reasons, the table
 * is history.
 *
 * @ingroup views_field_handlers
 */
class views_handler_field_history_user_timestamp extends views_handler_field_node {
    
    /**
     * {@inheritdoc}
     */
    public function init(&$view, &$options) {
        parent::init($view, $options);
        global $user;
        if ($user->uid) {
            $this->additional_fields['created'] = array(
                'table' => 'node',
                'field' => 'created',
            );
            $this->additional_fields['changed'] = array(
                'table' => 'node',
                'field' => 'changed',
            );
            if (module_exists('comment') && !empty($this->options['comments'])) {
                $this->additional_fields['last_comment'] = array(
                    'table' => 'node_comment_statistics',
                    'field' => 'last_comment_timestamp',
                );
            }
        }
    }
    
    /**
     * {@inheritdoc}
     */
    public function option_definition() {
        $options = parent::option_definition();
        $options['comments'] = array(
            'default' => FALSE,
            'bool' => TRUE,
        );
        return $options;
    }
    
    /**
     * {@inheritdoc}
     */
    public function options_form(&$form, &$form_state) {
        parent::options_form($form, $form_state);
        if (module_exists('comment')) {
            $form['comments'] = array(
                '#type' => 'checkbox',
                '#title' => t('Check for new comments as well'),
                '#default_value' => !empty($this->options['comments']),
                '#fieldset' => 'more',
            );
        }
    }
    
    /**
     * {@inheritdoc}
     */
    public function query() {
        // Only add ourselves to the query if logged in.
        global $user;
        if (!$user->uid) {
            return;
        }
        parent::query();
    }
    
    /**
     * {@inheritdoc}
     */
    public function render($values) {
        // Let's default to 'read' state.
        // This code shadows node_mark, but it reads from the db directly and
        // we already have that info.
        $mark = MARK_READ;
        global $user;
        if ($user->uid) {
            $last_read = $this->get_value($values);
            $changed = $this->get_value($values, 'changed');
            $last_comment = module_exists('comment') && !empty($this->options['comments']) ? $this->get_value($values, 'last_comment') : 0;
            if (!$last_read && $changed > NODE_NEW_LIMIT) {
                $mark = MARK_NEW;
            }
            elseif ($changed > $last_read && $changed > NODE_NEW_LIMIT) {
                $mark = MARK_UPDATED;
            }
            elseif ($last_comment > $last_read && $last_comment > NODE_NEW_LIMIT) {
                $mark = MARK_UPDATED;
            }
            return $this->render_link(theme('mark', array(
                'type' => $mark,
            )), $values);
        }
    }

}