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/*
* Copyright (C) 2014 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 "VisitedLinkTableController.h"
#include "VisitedLinkStoreMessages.h"
#include "VisitedLinkTableControllerMessages.h"
#include "WebPage.h"
#include "WebProcess.h"
#include <WebCore/BackForwardCache.h>
#include <wtf/NeverDestroyed.h>
namespace WebKit {
using namespace WebCore;
static HashMap<VisitedLinkTableIdentifier, WeakPtr<VisitedLinkTableController>>& visitedLinkTableControllers()
{
static NeverDestroyed<HashMap<VisitedLinkTableIdentifier, WeakPtr<VisitedLinkTableController>>> visitedLinkTableControllers;
RELEASE_ASSERT(isMainRunLoop());
return visitedLinkTableControllers;
}
Ref<VisitedLinkTableController> VisitedLinkTableController::getOrCreate(VisitedLinkTableIdentifier identifier)
{
auto& visitedLinkTableControllerPtr = visitedLinkTableControllers().add(identifier, nullptr).iterator->value;
if (RefPtr ptr = visitedLinkTableControllerPtr.get())
return *ptr;
auto visitedLinkTableController = adoptRef(*new VisitedLinkTableController(identifier));
visitedLinkTableControllerPtr = visitedLinkTableController.get();
return visitedLinkTableController;
}
VisitedLinkTableController::VisitedLinkTableController(VisitedLinkTableIdentifier identifier)
: m_identifier(identifier)
{
WebProcess::singleton().addMessageReceiver(Messages::VisitedLinkTableController::messageReceiverName(), m_identifier, *this);
}
VisitedLinkTableController::~VisitedLinkTableController()
{
ASSERT(visitedLinkTableControllers().contains(m_identifier));
WebProcess::singleton().removeMessageReceiver(Messages::VisitedLinkTableController::messageReceiverName(), m_identifier);
visitedLinkTableControllers().remove(m_identifier);
}
bool VisitedLinkTableController::isLinkVisited(Page&, SharedStringHash linkHash, const URL&, const AtomString&)
{
return m_visitedLinkTable.contains(linkHash);
}
void VisitedLinkTableController::addVisitedLink(Page& page, SharedStringHash linkHash)
{
if (m_visitedLinkTable.contains(linkHash))
return;
WebProcess::singleton().parentProcessConnection()->send(Messages::VisitedLinkStore::AddVisitedLinkHashFromPage(WebPage::fromCorePage(page)->webPageProxyIdentifier(), linkHash), m_identifier);
}
void VisitedLinkTableController::setVisitedLinkTable(SharedMemory::Handle&& handle)
{
auto sharedMemory = SharedMemory::map(WTFMove(handle), SharedMemory::Protection::ReadOnly);
if (!sharedMemory)
return;
m_visitedLinkTable.setSharedMemory(sharedMemory.releaseNonNull());
invalidateStylesForAllLinks();
}
void VisitedLinkTableController::visitedLinkStateChanged(const Vector<WebCore::SharedStringHash>& linkHashes)
{
for (auto linkHash : linkHashes)
invalidateStylesForLink(linkHash);
}
void VisitedLinkTableController::allVisitedLinkStateChanged()
{
invalidateStylesForAllLinks();
}
void VisitedLinkTableController::removeAllVisitedLinks()
{
m_visitedLinkTable.setSharedMemory(nullptr);
invalidateStylesForAllLinks();
}
} // namespace WebKit
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