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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 "FrameDestructionObserverInlines.h"
#include "LocalFrame.h"
#include "Page.h"
#include "UserContentController.h"
#include "UserMessageHandler.h"
namespace WebCore {
UserMessageHandlersNamespace::UserMessageHandlersNamespace(LocalFrame& frame, UserContentProvider& userContentProvider)
: FrameDestructionObserver(&frame)
, m_userContentProvider(userContentProvider)
{
m_userContentProvider->registerForUserMessageHandlerInvalidation(*this);
}
UserMessageHandlersNamespace::~UserMessageHandlersNamespace()
{
m_userContentProvider->unregisterForUserMessageHandlerInvalidation(*this);
}
void UserMessageHandlersNamespace::didInvalidate(UserContentProvider& provider)
{
auto oldMap = WTFMove(m_messageHandlers);
provider.forEachUserMessageHandler([&](const UserMessageHandlerDescriptor& descriptor) {
auto userMessageHandler = oldMap.take(std::make_pair(descriptor.name(), const_cast<DOMWrapperWorld*>(&descriptor.world())));
if (userMessageHandler) {
m_messageHandlers.add(std::make_pair(descriptor.name(), const_cast<DOMWrapperWorld*>(&descriptor.world())), userMessageHandler);
return;
}
});
for (auto& userMessageHandler : oldMap.values())
userMessageHandler->invalidateDescriptor();
}
Vector<AtomString> UserMessageHandlersNamespace::supportedPropertyNames() const
{
// FIXME: Consider adding support for iterating the registered UserMessageHandlers. This would
// require adding support for passing the DOMWrapperWorld to supportedPropertyNames.
return { };
}
bool UserMessageHandlersNamespace::isSupportedPropertyName(const AtomString&)
{
// FIXME: Consider adding support for this. It would require adding support for passing the
// DOMWrapperWorld to isSupportedPropertyName().
return false;
}
UserMessageHandler* UserMessageHandlersNamespace::namedItem(DOMWrapperWorld& world, const AtomString& name)
{
auto* frame = this->frame();
if (!frame)
return nullptr;
Page* page = frame->page();
if (!page)
return nullptr;
UserMessageHandler* handler = m_messageHandlers.get(std::pair<AtomString, RefPtr<DOMWrapperWorld>>(name, &world));
if (handler)
return handler;
page->protectedUserContentProvider()->forEachUserMessageHandler([&](const UserMessageHandlerDescriptor& descriptor) {
if (descriptor.name() != name || &descriptor.world() != &world)
return;
ASSERT(!handler);
auto addResult = m_messageHandlers.add(std::make_pair(descriptor.name(), const_cast<DOMWrapperWorld*>(&descriptor.world())), UserMessageHandler::create(*frame, const_cast<UserMessageHandlerDescriptor&>(descriptor)));
handler = addResult.iterator->value.get();
});
return handler;
}
} // namespace WebCore
#endif // ENABLE(USER_MESSAGE_HANDLERS)
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