v8htmlformelementcustom.cpp

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

/*
 * Copyright (C) 2009 Google Inc. All rights reserved.
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 * this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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#include "config.h"
#include "HTMLFormElement.h"

#include "V8Binding.h"
#include "V8CustomBinding.h"
#include "V8NamedNodesCollection.h"
#include "V8Proxy.h"

namespace WebCore {

NAMED_PROPERTY_GETTER(HTMLFormElement)
{
    INC_STATS("DOM.HTMLFormElement.NamedPropertyGetter");
    HTMLFormElement* imp = V8Proxy::DOMWrapperToNode<HTMLFormElement>(info.Holder());
    String v = toWebCoreString(name);

    // Call getNamedElements twice, first time check if it has a value
    // and let HTMLFormElement update its cache.
    // See issue: 867404
    {
        Vector<RefPtr<Node> > elements;
        imp->getNamedElements(v, elements);
        if (elements.isEmpty())
            return v8::Handle<v8::Value>();
    }

    // Second call may return different results from the first call,
    // but if the first the size cannot be zero.
    Vector<RefPtr<Node> > elements;
    imp->getNamedElements(v, elements);
    ASSERT(!elements.isEmpty());

    if (elements.size() == 1)
        return V8Proxy::NodeToV8Object(elements.at(0).get());

    NodeList* collection = new V8NamedNodesCollection(elements);
    return V8Proxy::ToV8Object(V8ClassIndex::NODELIST, collection);
}

} // namespace WebCore