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/*
* Copyright (C) 2023 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 "WebPageProxyMessageReceiverRegistration.h"
#include "WebBackForwardListMessages.h"
#include "WebPageProxyMessages.h"
#include "WebProcessProxy.h"
namespace WebKit {
WebPageProxyMessageReceiverRegistration::~WebPageProxyMessageReceiverRegistration()
{
stopReceivingMessages();
}
void WebPageProxyMessageReceiverRegistration::startReceivingMessages(WebProcessProxy& process, WebCore::PageIdentifier webPageID, IPC::MessageReceiver& webPageProxyReceiver, IPC::MessageReceiver& backForwardListReceiver)
{
stopReceivingMessages();
process.addMessageReceiver(Messages::WebPageProxy::messageReceiverName(), webPageID, webPageProxyReceiver);
process.addMessageReceiver(Messages::WebBackForwardList::messageReceiverName(), webPageID, backForwardListReceiver);
m_data = { { webPageID, process } };
}
void WebPageProxyMessageReceiverRegistration::stopReceivingMessages()
{
if (auto data = std::exchange(m_data, std::nullopt)) {
data->protectedProcess()->removeMessageReceiver(Messages::WebPageProxy::messageReceiverName(), data->webPageID);
data->protectedProcess()->removeMessageReceiver(Messages::WebBackForwardList::messageReceiverName(), data->webPageID);
}
}
void WebPageProxyMessageReceiverRegistration::transferMessageReceivingFrom(WebPageProxyMessageReceiverRegistration& oldRegistration, IPC::MessageReceiver& newWebPageProxyReceiver, IPC::MessageReceiver& newBackForwardListReceiver)
{
ASSERT(!m_data);
if (auto data = std::exchange(oldRegistration.m_data, std::nullopt)) {
data->protectedProcess()->removeMessageReceiver(Messages::WebPageProxy::messageReceiverName(), data->webPageID);
data->protectedProcess()->removeMessageReceiver(Messages::WebBackForwardList::messageReceiverName(), data->webPageID);
startReceivingMessages(data->process, data->webPageID, newWebPageProxyReceiver, newBackForwardListReceiver);
} else {
stopReceivingMessages();
ASSERT_NOT_REACHED();
}
}
Ref<WebProcessProxy> WebPageProxyMessageReceiverRegistration::Data::protectedProcess()
{
return process;
}
} // namespace WebKit
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