LCOV - code coverage report
Current view: directory - content/base/src - nsTraversal.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 20 20 100.0 %
Date: 2012-06-02 Functions: 4 3 75.0 %

       1                 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
       2                 :  *
       3                 :  * ***** BEGIN LICENSE BLOCK *****
       4                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       5                 :  *
       6                 :  * The contents of this file are subject to the Mozilla Public License Version
       7                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       8                 :  * the License. You may obtain a copy of the License at
       9                 :  * http://www.mozilla.org/MPL/
      10                 :  *
      11                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      12                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      13                 :  * for the specific language governing rights and limitations under the
      14                 :  * License.
      15                 :  *
      16                 :  * The Original Code is this file as it was released on May 1 2001.
      17                 :  *
      18                 :  * The Initial Developer of the Original Code is
      19                 :  * Jonas Sicking.
      20                 :  * Portions created by the Initial Developer are Copyright (C) 2001
      21                 :  * the Initial Developer. All Rights Reserved.
      22                 :  *
      23                 :  * Contributor(s):
      24                 :  *   Jonas Sicking <sicking@bigfoot.com> (Original Author)
      25                 :  *
      26                 :  * Alternatively, the contents of this file may be used under the terms of
      27                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      28                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      29                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      30                 :  * of those above. If you wish to allow use of your version of this file only
      31                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      32                 :  * use your version of this file under the terms of the MPL, indicate your
      33                 :  * decision by deleting the provisions above and replace them with the notice
      34                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      35                 :  * the provisions above, a recipient may use your version of this file under
      36                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      37                 :  *
      38                 :  * ***** END LICENSE BLOCK ***** */
      39                 : 
      40                 : #include "nsTraversal.h"
      41                 : 
      42                 : #include "nsIDOMNode.h"
      43                 : #include "nsIDOMNodeFilter.h"
      44                 : #include "nsDOMError.h"
      45                 : 
      46                 : #include "nsIContent.h"
      47                 : 
      48                 : #include "nsGkAtoms.h"
      49                 : 
      50              65 : nsTraversal::nsTraversal(nsINode *aRoot,
      51                 :                          PRUint32 aWhatToShow,
      52                 :                          nsIDOMNodeFilter *aFilter) :
      53                 :     mRoot(aRoot),
      54                 :     mWhatToShow(aWhatToShow),
      55                 :     mFilter(aFilter),
      56              65 :     mInAcceptNode(false)
      57                 : {
      58              65 :     NS_ASSERTION(aRoot, "invalid root in call to nsTraversal constructor");
      59              65 : }
      60                 : 
      61              65 : nsTraversal::~nsTraversal()
      62                 : {
      63                 :     /* destructor code */
      64             130 : }
      65                 : 
      66                 : /*
      67                 :  * Tests if and how a node should be filtered. Uses mWhatToShow and
      68                 :  * mFilter to test the node.
      69                 :  * @param aNode     Node to test
      70                 :  * @param _filtered Returned filtervalue. See nsIDOMNodeFilter.idl
      71                 :  * @returns         Errorcode
      72                 :  */
      73            2822 : nsresult nsTraversal::TestNode(nsINode* aNode, PRInt16* _filtered)
      74                 : {
      75            2822 :     NS_ENSURE_TRUE(!mInAcceptNode, NS_ERROR_DOM_INVALID_STATE_ERR);
      76                 : 
      77                 :     nsresult rv;
      78                 : 
      79            2822 :     *_filtered = nsIDOMNodeFilter::FILTER_SKIP;
      80                 : 
      81            2822 :     PRUint16 nodeType = aNode->NodeType();
      82                 : 
      83            2822 :     if (nodeType <= 12 && !((1 << (nodeType-1)) & mWhatToShow)) {
      84            1604 :         return NS_OK;
      85                 :     }
      86                 : 
      87            1218 :     if (mFilter) {
      88            1606 :         nsCOMPtr<nsIDOMNode> domNode = do_QueryInterface(aNode);
      89             803 :         mInAcceptNode = true;
      90             803 :         rv = mFilter->AcceptNode(domNode, _filtered);
      91             803 :         mInAcceptNode = false;
      92             803 :         return rv;
      93                 :     }
      94                 : 
      95             415 :     *_filtered = nsIDOMNodeFilter::FILTER_ACCEPT;
      96             415 :     return NS_OK;
      97                 : }

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