148 lines
4.0 KiB
C++
148 lines
4.0 KiB
C++
/*
|
|
* 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);
|
|
}
|
|
|
|
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
|