blob: f6f1478cc5d1be85ddc4df9e974c63ea37301ce7 [file] [log] [blame]
/*
* 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 "BackForwardController.h"
#include "BackForwardClient.h"
#include "HistoryItem.h"
#include "Page.h"
#include "ShouldTreatAsContinuingLoad.h"
namespace WebCore {
BackForwardController::BackForwardController(Page& page, Ref<BackForwardClient>&& client)
: m_page(page)
, m_client(WTFMove(client))
{
}
BackForwardController::~BackForwardController() = default;
RefPtr<HistoryItem> BackForwardController::backItem()
{
return itemAtIndex(-1);
}
RefPtr<HistoryItem> BackForwardController::currentItem()
{
return itemAtIndex(0);
}
RefPtr<HistoryItem> BackForwardController::forwardItem()
{
return itemAtIndex(1);
}
bool BackForwardController::canGoBackOrForward(int distance) const
{
if (!distance)
return true;
if (distance > 0 && static_cast<unsigned>(distance) <= forwardCount())
return true;
if (distance < 0 && static_cast<unsigned>(-distance) <= backCount())
return true;
return false;
}
void BackForwardController::goBackOrForward(int distance)
{
if (!distance)
return;
auto historyItem = itemAtIndex(distance);
if (!historyItem) {
if (distance > 0) {
if (int forwardCount = this->forwardCount())
historyItem = itemAtIndex(forwardCount);
} else {
if (int backCount = this->backCount())
historyItem = itemAtIndex(-backCount);
}
}
if (!historyItem)
return;
m_page.goToItem(*historyItem, FrameLoadType::IndexedBackForward, ShouldTreatAsContinuingLoad::No);
}
bool BackForwardController::goBack()
{
auto historyItem = backItem();
if (!historyItem)
return false;
m_page.goToItem(*historyItem, FrameLoadType::Back, ShouldTreatAsContinuingLoad::No);
return true;
}
bool BackForwardController::goForward()
{
auto historyItem = forwardItem();
if (!historyItem)
return false;
m_page.goToItem(*historyItem, FrameLoadType::Forward, ShouldTreatAsContinuingLoad::No);
return true;
}
void BackForwardController::addItem(Ref<HistoryItem>&& item)
{
m_client->addItem(WTFMove(item));
}
void BackForwardController::setCurrentItem(HistoryItem& item)
{
m_client->goToItem(item);
}
bool BackForwardController::containsItem(const HistoryItem& item) const
{
return m_client->containsItem(item);
}
unsigned BackForwardController::count() const
{
return m_client->backListCount() + 1 + m_client->forwardListCount();
}
unsigned BackForwardController::backCount() const
{
return m_client->backListCount();
}
unsigned BackForwardController::forwardCount() const
{
return m_client->forwardListCount();
}
RefPtr<HistoryItem> BackForwardController::itemAtIndex(int i)
{
return m_client->itemAtIndex(i);
}
void BackForwardController::close()
{
m_client->close();
}
} // namespace WebCore