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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 "UserMessageHandlersNamespace.h"
#if ENABLE(USER_MESSAGE_HANDLERS)
#include "DOMWrapperWorld.h"
#include "Frame.h"
#include "Page.h"
#include "UserContentController.h"
namespace WebCore {
UserMessageHandlersNamespace::UserMessageHandlersNamespace(Frame& frame)
: FrameDestructionObserver(&frame)
{
}
UserMessageHandlersNamespace::~UserMessageHandlersNamespace()
{
}
UserMessageHandler* UserMessageHandlersNamespace::handler(const AtomicString& name, DOMWrapperWorld& world)
{
// First, check if we have a handler instance already.
for (auto& handler : m_messageHandlers) {
if (handler->name() == name && &handler->world() == &world)
return &handler.get();
}
// Second, attempt to create a handler instance from a descriptor.
if (!frame())
return nullptr;
Page* page = frame()->page();
if (!page)
return nullptr;
const auto* userContentController = page->userContentController();
if (!userContentController)
return nullptr;
const auto* userMessageHandlerDescriptors = userContentController->userMessageHandlerDescriptors();
if (!userMessageHandlerDescriptors)
return nullptr;
RefPtr<UserMessageHandlerDescriptor> descriptor = userMessageHandlerDescriptors->get(std::make_pair(name, &world));
if (!descriptor)
return nullptr;
m_messageHandlers.append(UserMessageHandler::create(*frame(), *descriptor));
return &m_messageHandlers.last().get();
}
} // namespace WebCore
#endif // ENABLE(USER_MESSAGE_HANDLERS)
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