Source/web/WebNodeCollection.cpp

/*
 * Copyright (C) 2009 Google Inc. All rights reserved.
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 * in the documentation and/or other materials provided with the
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 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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#include "config.h"
#include "WebNodeCollection.h"

#include "core/dom/Node.h"
#include "core/html/HTMLCollection.h"
#include "wtf/PassRefPtr.h"

#include "WebNode.h"

using namespace WebCore;

namespace WebKit {

void WebNodeCollection::reset()
{
    assign(0);
}

void WebNodeCollection::assign(const WebNodeCollection& other)
{
    HTMLCollection* p = const_cast<HTMLCollection*>(other.m_private);
    if (p)
        p->ref();
    assign(p);
}

WebNodeCollection::WebNodeCollection(const PassRefPtr<HTMLCollection>& col)
    : m_private(static_cast<HTMLCollection*>(col.leakRef()))
{
}

void WebNodeCollection::assign(HTMLCollection* p)
{
    // p is already ref'd for us by the caller
    if (m_private)
        m_private->deref();
    m_private = p;
}

unsigned WebNodeCollection::length() const
{
    return m_private->length();
}

WebNode WebNodeCollection::nextItem() const
{
    Node* node = m_private->item(m_current);
    if (node)
        m_current++;
    return WebNode(node);
}

WebNode WebNodeCollection::firstItem() const
{
    m_current = 0;
    return nextItem();
}

} // namespace WebKit