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      1 /*
      2  * Copyright (C) 1999 Lars Knoll (knoll (at) kde.org)
      3  *           (C) 1999 Antti Koivisto (koivisto (at) kde.org)
      4  *           (C) 2001 Dirk Mueller (mueller (at) kde.org)
      5  *           (C) 2006 Alexey Proskuryakov (ap (at) webkit.org)
      6  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
      7  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
      8  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
      9  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
     10  * Copyright (C) 2013 Google Inc. All rights reserved.
     11  *
     12  * This library is free software; you can redistribute it and/or
     13  * modify it under the terms of the GNU Library General Public
     14  * License as published by the Free Software Foundation; either
     15  * version 2 of the License, or (at your option) any later version.
     16  *
     17  * This library is distributed in the hope that it will be useful,
     18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     20  * Library General Public License for more details.
     21  *
     22  * You should have received a copy of the GNU Library General Public License
     23  * along with this library; see the file COPYING.LIB.  If not, write to
     24  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     25  * Boston, MA 02110-1301, USA.
     26  */
     27 
     28 #include "config.h"
     29 #include "core/dom/DocumentOrderedList.h"
     30 
     31 #include "core/dom/Node.h"
     32 
     33 namespace blink {
     34 
     35 void DocumentOrderedList::add(Node* node)
     36 {
     37     if (m_nodes.isEmpty()) {
     38         m_nodes.add(node);
     39         return;
     40     }
     41 
     42     // Determine an appropriate insertion point.
     43     iterator begin = m_nodes.begin();
     44     iterator end = m_nodes.end();
     45     iterator it = end;
     46     Node* followingNode = 0;
     47     do {
     48         --it;
     49         Node* n = *it;
     50         unsigned short position = n->compareDocumentPosition(node, Node::TreatShadowTreesAsComposed);
     51         if (position & Node::DOCUMENT_POSITION_FOLLOWING) {
     52             m_nodes.insertBefore(followingNode, node);
     53             return;
     54         }
     55         followingNode = n;
     56     } while (it != begin);
     57 
     58     m_nodes.insertBefore(followingNode, node);
     59 }
     60 
     61 void DocumentOrderedList::parserAdd(Node* node)
     62 {
     63     ASSERT(m_nodes.isEmpty() || m_nodes.last()->compareDocumentPosition(node, Node::TreatShadowTreesAsComposed) & Node::DOCUMENT_POSITION_FOLLOWING);
     64     m_nodes.add(node);
     65 }
     66 
     67 void DocumentOrderedList::remove(const Node* node)
     68 {
     69     m_nodes.remove(const_cast<Node*>(node));
     70 }
     71 
     72 void DocumentOrderedList::trace(Visitor* visitor)
     73 {
     74 #if ENABLE(OILPAN)
     75     visitor->trace(m_nodes);
     76 #endif
     77 }
     78 
     79 }
     80 
     81