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/*
* Copyright (C) 2010 Apple Inc. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. 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 INC. 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; 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 "core/history/BackForwardController.h"
#include "core/history/BackForwardClient.h"
#include "core/history/HistoryItem.h"
#include "core/loader/FrameLoader.h"
#include "core/loader/FrameLoaderClient.h"
#include "core/page/Frame.h"
#include "core/page/Page.h"
namespace WebCore {
BackForwardController::BackForwardController(Page* page, BackForwardClient* client)
: m_page(page)
, m_client(client)
{
ASSERT(m_client);
}
BackForwardController::~BackForwardController()
{
}
PassOwnPtr<BackForwardController> BackForwardController::create(Page* page, BackForwardClient* client)
{
return adoptPtr(new BackForwardController(page, client));
}
bool BackForwardController::goBackOrForward(int distance)
{
ASSERT(distance);
if (distance > forwardCount())
distance = forwardCount();
else if (distance < -backCount())
distance = backCount();
if (!distance)
return false;
m_page->mainFrame()->loader()->client()->navigateBackForward(distance);
return true;
}
void BackForwardController::addItem(PassRefPtr<HistoryItem> item)
{
m_currentItem = item;
m_client->didAddItem();
}
void BackForwardController::setCurrentItem(HistoryItem* item)
{
m_currentItem = item;
}
int BackForwardController::count() const
{
return backCount() + 1 + forwardCount();
}
int BackForwardController::backCount() const
{
return m_client->backListCount();
}
int BackForwardController::forwardCount() const
{
return m_client->forwardListCount();
}
} // namespace WebCore
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