/*

 * Copyright 2010, The Android Open Source Project

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *  * Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 *  * 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.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``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 THE COPYRIGHT OWNER OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#include "config.h"

#include "ScriptCachedFrameData.h"

#include "Frame.h"

#include "ScriptController.h"

#include "V8DOMWindow.h"

namespace WebCore {

ScriptCachedFrameData::ScriptCachedFrameData(Frame* frame)

    : m_domWindow(0)

{

    v8::HandleScope handleScope;

    // The context can only be the context of the main world.

    ASSERT(V8Proxy::mainWorldContext(frame) == V8Proxy::context(frame));

    m_context.set(V8Proxy::mainWorldContext(frame));

    // The context can be 0, e.g. if JS is disabled in the browser.

    if (m_context.get().IsEmpty())

        return;

    m_global.set(m_context.get()->Global());

    m_domWindow = frame->domWindow();

}

DOMWindow* ScriptCachedFrameData::domWindow() const

{

    return m_domWindow;

}

void ScriptCachedFrameData::restore(Frame* frame)

{

    if (m_context.get().IsEmpty())

        return;

    v8::HandleScope handleScope;

    v8::Context::Scope contextScope(m_context.get());

    m_context.get()->ReattachGlobal(m_global.get());

    V8Proxy* proxy = V8Proxy::retrieve(frame);

    if (proxy)

        proxy->windowShell()->setContext(m_context.get());

}

void ScriptCachedFrameData::clear()

{

    m_context.clear();

    m_global.clear();

}

} // namespace WebCore