/*

 * Copyright (C) 2006, 2007, 2009 Apple Inc. All rights reserved.

 * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Library General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Library General Public License for more details.

 *

 * You should have received a copy of the GNU Library General Public License

 * along with this library; see the file COPYING.LIB.  If not, write to

 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

 * Boston, MA 02110-1301, USA.

 */

#include "config.h"

#include "PageGroupLoadDeferrer.h"

#include "Frame.h"

#include "Page.h"

#include "PageGroup.h"

#include <wtf/HashSet.h>

namespace WebCore {

using namespace std;

PageGroupLoadDeferrer::PageGroupLoadDeferrer(Page* page, bool deferSelf)

{

    const HashSet<Page*>& pages = page->group().pages();

    HashSet<Page*>::const_iterator end = pages.end();

    for (HashSet<Page*>::const_iterator it = pages.begin(); it != end; ++it) {

        Page* otherPage = *it;

        if ((deferSelf || otherPage != page)) {

            if (!otherPage->defersLoading())

                m_deferredFrames.append(otherPage->mainFrame());

            // This code is not logically part of load deferring, but we do not want JS code executed beneath modal

            // windows or sheets, which is exactly when PageGroupLoadDeferrer is used.

            for (Frame* frame = otherPage->mainFrame(); frame; frame = frame->tree()->traverseNext()) {

                frame->document()->suspendActiveDOMObjects();

                frame->document()->suspendExecuteScriptSoonTimer();

            }

        }

    }

    size_t count = m_deferredFrames.size();

    for (size_t i = 0; i < count; ++i)

        if (Page* page = m_deferredFrames[i]->page())

            page->setDefersLoading(true);

}

PageGroupLoadDeferrer::~PageGroupLoadDeferrer()

{

    for (size_t i = 0; i < m_deferredFrames.size(); ++i) {

        if (Page* page = m_deferredFrames[i]->page()) {

            page->setDefersLoading(false);

            for (Frame* frame = page->mainFrame(); frame; frame = frame->tree()->traverseNext()) {

                frame->document()->resumeActiveDOMObjects();

                frame->document()->resumeExecuteScriptSoonTimer();

            }

        }

    }

}

} // namespace WebCore