dom/base/nsTraversal.h
author Sylvestre Ledru <sledru@mozilla.com>
Fri, 30 Nov 2018 11:46:48 +0100
changeset 448947 6f3709b3878117466168c40affa7bca0b60cf75b
parent 402152 bffbab07fdc4c9a92b7a6ff5d68459961cc786ab
permissions -rw-r--r--
Bug 1511181 - Reformat everything to the Google coding style r=ehsan a=clang-format # ignore-this-changeset

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */

/*
 * Implementation of common traversal methods for TreeWalker and NodeIterator.
 */

#ifndef nsTraversal_h___
#define nsTraversal_h___

#include "nsCOMPtr.h"
#include "mozilla/dom/CallbackObject.h"
#include "mozilla/ErrorResult.h"
#include "mozilla/dom/NodeFilterBinding.h"

class nsINode;

class nsTraversal {
 public:
  nsTraversal(nsINode* aRoot, uint32_t aWhatToShow,
              mozilla::dom::NodeFilter* aFilter);
  virtual ~nsTraversal();

 protected:
  nsCOMPtr<nsINode> mRoot;
  uint32_t mWhatToShow;
  RefPtr<mozilla::dom::NodeFilter> mFilter;
  bool mInAcceptNode;

  /*
   * Tests if and how a node should be filtered. Uses mWhatToShow and
   * mFilter to test the node.
   * @param aNode     Node to test
   * @param aResult   Whether we succeeded
   * @returns         Filtervalue. See NodeFilter.webidl
   */
  int16_t TestNode(nsINode* aNode, mozilla::ErrorResult& aResult);
};

#endif