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/* -*- 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
/*
* 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/dom/NodeFilterBinding.h"
class nsINode;
namespace mozilla {
class ErrorResult;
}
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
* @param aUnskippedNode If non-null is passed, set to aNode if node isn't
* filtered out by mWhatToShow.
* @returns Filtervalue. See NodeFilter.webidl
*/
int16_t TestNode(nsINode* aNode, mozilla::ErrorResult& aResult,
nsCOMPtr<nsINode>* aUnskippedNode = nullptr);
};
#endif