michael@0: /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0:  *
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0:  
michael@0: /*
michael@0:  * Implementation of DOM Traversal's nsIDOMTreeWalker
michael@0:  */
michael@0: 
michael@0: #ifndef nsTraversal_h___
michael@0: #define nsTraversal_h___
michael@0: 
michael@0: #include "nsCOMPtr.h"
michael@0: #include "nsIDocument.h"
michael@0: #include "mozilla/dom/CallbackObject.h"
michael@0: #include "mozilla/ErrorResult.h"
michael@0: #include "mozilla/dom/NodeFilterBinding.h"
michael@0: #include "nsIDOMNodeFilter.h"
michael@0: 
michael@0: class nsINode;
michael@0: 
michael@0: class nsTraversal
michael@0: {
michael@0: public:
michael@0:     nsTraversal(nsINode *aRoot,
michael@0:                 uint32_t aWhatToShow,
michael@0:                 const mozilla::dom::NodeFilterHolder &aFilter);
michael@0:     virtual ~nsTraversal();
michael@0: 
michael@0: protected:
michael@0:     nsCOMPtr<nsINode> mRoot;
michael@0:     uint32_t mWhatToShow;
michael@0:     mozilla::dom::NodeFilterHolder mFilter;
michael@0:     bool mInAcceptNode;
michael@0: 
michael@0:     /*
michael@0:      * Tests if and how a node should be filtered. Uses mWhatToShow and
michael@0:      * mFilter to test the node.
michael@0:      * @param aNode     Node to test
michael@0:      * @param aResult   Whether we succeeded
michael@0:      * @returns         Filtervalue. See nsIDOMNodeFilter.idl
michael@0:      */
michael@0:     int16_t TestNode(nsINode* aNode, mozilla::ErrorResult& aResult);
michael@0: };
michael@0: 
michael@0: #endif
michael@0: