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/*
* Copyright (C) 2025 Igalia S.L. 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 "CloseWatcher.h"
#include "CloseWatcherManager.h"
#include "DocumentInlines.h"
#include "Event.h"
#include "EventNames.h"
#include "KeyboardEvent.h"
#include "LocalDOMWindow.h"
#include "ScriptExecutionContext.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_TZONE_ALLOCATED_IMPL(CloseWatcher);
ExceptionOr<Ref<CloseWatcher>> CloseWatcher::create(ScriptExecutionContext& context, const Options& options)
{
RefPtr document = dynamicDowncast<Document>(context);
if (!document->isFullyActive())
return Exception { ExceptionCode::InvalidStateError, "Document is not fully active."_s };
Ref watcher = CloseWatcher::establish(*document);
if (RefPtr signal = options.signal) {
if (signal->aborted()) {
watcher->m_active = false;
Ref manager = document->protectedWindow()->closeWatcherManager();
manager->remove(watcher.get());
} else {
watcher->m_signal = signal;
watcher->m_signalAlgorithm = signal->addAlgorithm([weakWatcher = WeakPtr { watcher.get() }](JSC::JSValue) mutable {
if (weakWatcher)
weakWatcher->destroy();
});
}
}
return watcher;
}
Ref<CloseWatcher> CloseWatcher::establish(Document& document)
{
ASSERT(document.isFullyActive());
Ref watcher = adoptRef(*new CloseWatcher(document));
watcher->suspendIfNeeded();
Ref manager = document.protectedWindow()->closeWatcherManager();
manager->add(watcher);
return watcher;
}
CloseWatcher::CloseWatcher(Document& document)
: ActiveDOMObject(document)
{ }
void CloseWatcher::requestClose()
{
requestToClose();
}
bool CloseWatcher::requestToClose()
{
if (!canBeClosed())
return true;
RefPtr document = dynamicDowncast<Document>(scriptExecutionContext());
Ref manager = document->protectedWindow()->closeWatcherManager();
bool canPreventClose = manager->canPreventClose() && document->protectedWindow()->hasHistoryActionActivation();
Ref cancelEvent = Event::create(eventNames().cancelEvent, Event::CanBubble::No, canPreventClose ? Event::IsCancelable::Yes : Event::IsCancelable::No);
m_isRunningCancelAction = true;
dispatchEvent(cancelEvent);
m_isRunningCancelAction = false;
if (cancelEvent->defaultPrevented()) {
document->protectedWindow()->consumeHistoryActionUserActivation();
return false;
}
close();
return true;
}
void CloseWatcher::close()
{
if (!canBeClosed())
return;
destroy();
Ref closeEvent = Event::create(eventNames().closeEvent, Event::CanBubble::No, Event::IsCancelable::No);
dispatchEvent(closeEvent);
}
bool CloseWatcher::canBeClosed() const
{
RefPtr document = dynamicDowncast<Document>(scriptExecutionContext());
return isActive() && !m_isRunningCancelAction && document && document->isFullyActive();
}
void CloseWatcher::destroy()
{
if (!isActive())
return;
RefPtr document = dynamicDowncast<Document>(scriptExecutionContext());
if (document && document->protectedWindow()) {
Ref manager = document->protectedWindow()->closeWatcherManager();
manager->remove(*this);
}
m_active = false;
if (RefPtr signal = m_signal)
signal->removeAlgorithm(m_signalAlgorithm);
}
void CloseWatcher::eventListenersDidChange()
{
m_hasCancelEventListener = hasEventListeners(eventNames().cancelEvent);
m_hasCloseEventListener = hasEventListeners(eventNames().closeEvent);
}
bool CloseWatcher::virtualHasPendingActivity() const
{
return m_hasCancelEventListener || m_hasCloseEventListener;
}
} // namespace WebCore
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