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49 lines
1.4 KiB
C++
49 lines
1.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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* Implementation of common traversal methods for TreeWalker and NodeIterator.
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*/
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#ifndef nsTraversal_h___
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#define nsTraversal_h___
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#include "nsCOMPtr.h"
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#include "mozilla/dom/CallbackObject.h"
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#include "mozilla/dom/NodeFilterBinding.h"
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class nsINode;
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namespace mozilla {
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class ErrorResult;
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}
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class nsTraversal {
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public:
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nsTraversal(nsINode* aRoot, uint32_t aWhatToShow,
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mozilla::dom::NodeFilter* aFilter);
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virtual ~nsTraversal();
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protected:
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nsCOMPtr<nsINode> mRoot;
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uint32_t mWhatToShow;
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RefPtr<mozilla::dom::NodeFilter> mFilter;
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bool mInAcceptNode;
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/*
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* Tests if and how a node should be filtered. Uses mWhatToShow and
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* mFilter to test the node.
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* @param aNode Node to test
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* @param aResult Whether we succeeded
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* @param aUnskippedNode If non-null is passed, set to aNode if node isn't
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* filtered out by mWhatToShow.
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* @returns Filtervalue. See NodeFilter.webidl
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*/
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int16_t TestNode(nsINode* aNode, mozilla::ErrorResult& aResult,
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nsCOMPtr<nsINode>* aUnskippedNode = nullptr);
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};
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#endif
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