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/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
 * You can obtain one at http://mozilla.org/MPL/2.0/.
 */

interface File;

/*
 * All functions on Directory that accept DOMString arguments for file or
 * directory names only allow relative path to current directory itself. The
 * path should be a descendent path like "path/to/file.txt" and not contain a
 * segment of ".." or ".". So the paths aren't allowed to walk up the directory
 * tree. For example, paths like "../foo", "..", "/foo/bar" or "foo/../bar" are
 * not allowed.
 */
[NoInterfaceObject]
interface Directory {
  /*
   * The leaf name of the directory.
   */
  readonly attribute DOMString name;

  /*
   * Creates a descendent directory. This method will create any intermediate
   * directories specified by the path segments.
   *
   * @param path The relative path of the new directory to current directory.
   * If path exists, createDirectory must fail.
   * @return If succeeds, the promise is resolved with the new created
   * Directory object. Otherwise, rejected with a DOM error.
   */
  [NewObject]
  // Promise<Directory>
  Promise createDirectory(DOMString path);

  /*
   * Gets a descendent file or directory with the given path.
   *
   * @param path The descendent entry's relative path to current directory.
   * @return If the path exists and no error occurs, the promise is resolved
   * with a File or Directory object, depending on the entry's type. Otherwise,
   * rejected with a DOM error.
   */
  [NewObject]
  // Promise<(File or Directory)>
  Promise get(DOMString path);
};