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100 lines
3.3 KiB
C++
100 lines
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is this file as it was released on May 1 2001.
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*
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* The Initial Developer of the Original Code is
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* Jonas Sicking.
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* Portions created by the Initial Developer are Copyright (C) 2001
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Jonas Sicking <sicking@bigfoot.com> (Original Author)
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsTraversal.h"
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#include "nsIDOMNode.h"
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#include "nsIDOMNodeFilter.h"
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#include "nsDOMError.h"
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#include "nsIContent.h"
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#include "nsGkAtoms.h"
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nsTraversal::nsTraversal(nsINode *aRoot,
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PRUint32 aWhatToShow,
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nsIDOMNodeFilter *aFilter,
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bool aExpandEntityReferences) :
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mRoot(aRoot),
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mWhatToShow(aWhatToShow),
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mFilter(aFilter),
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mExpandEntityReferences(aExpandEntityReferences),
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mInAcceptNode(PR_FALSE)
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{
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NS_ASSERTION(aRoot, "invalid root in call to nsTraversal constructor");
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}
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nsTraversal::~nsTraversal()
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{
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/* destructor code */
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}
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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 _filtered Returned filtervalue. See nsIDOMNodeFilter.idl
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* @returns Errorcode
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*/
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nsresult nsTraversal::TestNode(nsINode* aNode, PRInt16* _filtered)
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{
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NS_ENSURE_TRUE(!mInAcceptNode, NS_ERROR_DOM_INVALID_STATE_ERR);
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nsresult rv;
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*_filtered = nsIDOMNodeFilter::FILTER_SKIP;
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PRUint16 nodeType = aNode->NodeType();
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if (nodeType <= 12 && !((1 << (nodeType-1)) & mWhatToShow)) {
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return NS_OK;
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}
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if (mFilter) {
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nsCOMPtr<nsIDOMNode> domNode = do_QueryInterface(aNode);
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mInAcceptNode = PR_TRUE;
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rv = mFilter->AcceptNode(domNode, _filtered);
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mInAcceptNode = PR_FALSE;
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return rv;
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}
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*_filtered = nsIDOMNodeFilter::FILTER_ACCEPT;
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return NS_OK;
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}
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