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      1 /*
      2  * Copyright (C) 2009 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "config.h"
     32 #include "WebNodeCollection.h"
     33 
     34 #include "core/dom/Node.h"
     35 #include "core/html/HTMLCollection.h"
     36 #include "wtf/PassRefPtr.h"
     37 
     38 #include "WebNode.h"
     39 
     40 using namespace WebCore;
     41 
     42 namespace blink {
     43 
     44 void WebNodeCollection::reset()
     45 {
     46     assign(0);
     47 }
     48 
     49 void WebNodeCollection::assign(const WebNodeCollection& other)
     50 {
     51     HTMLCollection* p = const_cast<HTMLCollection*>(other.m_private);
     52     if (p)
     53         p->ref();
     54     assign(p);
     55 }
     56 
     57 WebNodeCollection::WebNodeCollection(const PassRefPtr<HTMLCollection>& col)
     58     : m_private(static_cast<HTMLCollection*>(col.leakRef()))
     59 {
     60 }
     61 
     62 void WebNodeCollection::assign(HTMLCollection* p)
     63 {
     64     // p is already ref'd for us by the caller
     65     if (m_private)
     66         m_private->deref();
     67     m_private = p;
     68 }
     69 
     70 unsigned WebNodeCollection::length() const
     71 {
     72     return m_private->length();
     73 }
     74 
     75 WebNode WebNodeCollection::nextItem() const
     76 {
     77     Node* node = m_private->item(m_current);
     78     if (node)
     79         m_current++;
     80     return WebNode(node);
     81 }
     82 
     83 WebNode WebNodeCollection::firstItem() const
     84 {
     85     m_current = 0;
     86     return nextItem();
     87 }
     88 
     89 } // namespace blink
     90