moodle/lib/file/file_info_user.php

<?php  //$Id$

/**
 * Represents a user context in the tree navigated by @see{file_browser}.
 */
class file_info_user extends file_info {
    protected $user;

    public function __construct($browser, $context) {
        global $DB, $USER;

        parent::__construct($browser, $context);

        $userid = $context->instanceid;

        if ($userid == $USER->id) {
            $this->user = $USER;
        } else {
            // if context exists user record should exist too ;-)
            $this->user = $DB->get_record('user', array('id'=>$userid));
        }
    }

    public function get_params() {
        return array('contextid'=>$this->context->id,
                     'filearea' =>null,
                     'itemid'   =>null,
                     'filepath' =>null,
                     'filename' =>null);
    }

    public function get_visible_name() {
        return fullname($this->user, true);
    }

    public function is_writable() {
        return false;
    }

    public function is_directory() {
        return true;
    }

    public function get_children() {
        global $USER, $CFG;

        $children = array();

        if ($child = $this->browser->get_file_info(get_context_instance(CONTEXT_USER, $USER->id), 'user_private', 0)) {
            $children[] = $child;
        }

        if ($child = $this->browser->get_file_info(get_context_instance(CONTEXT_USER, $USER->id), 'user_profile', 0)) {
            $children[] = $child;
        }

        // do not list user_draft here - it is browsable only if you know the draft itemid ;-)

        return $children;
    }

    public function get_parent() {
        return $this->browser->get_file_info(get_context_instance(CONTEXT_SYSTEM));
    }
}