Source/WebCore/dom/CurrentScriptIncrementer.h

/*
 * Copyright (C) 2013 Samsung Electronics. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 * 3.  Neither the name of Apple Inc. ("Apple") nor the names of
 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 */

#ifndef CurrentScriptIncrementer_h
#define CurrentScriptIncrementer_h

#include "Document.h"
#include "HTMLScriptElement.h"

namespace WebCore {

class CurrentScriptIncrementer {
    WTF_MAKE_NONCOPYABLE(CurrentScriptIncrementer);
public:
    CurrentScriptIncrementer(Document& document, Element& element)
        : m_document(document)
        , m_isHTMLScriptElementOutsideShadowTree(is<HTMLScriptElement>(element) && !element.isInShadowTree())
    {
        if (m_isHTMLScriptElementOutsideShadowTree)
            m_document.pushCurrentScript(&downcast<HTMLScriptElement>(element));
    }

    ~CurrentScriptIncrementer()
    {
        if (m_isHTMLScriptElementOutsideShadowTree)
            m_document.popCurrentScript();
    }

private:
    Document& m_document;
    bool m_isHTMLScriptElementOutsideShadowTree;
};

}

#endif