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/*
* Copyright (C) 2011-2021 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. ``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
* 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"
#if ENABLE(VIDEO)
#include "JSTextTrackCue.h"
#include "JSDataCue.h"
#include "JSTrackCustom.h"
#include "JSVTTCue.h"
#include "TextTrack.h"
#include "WebCoreOpaqueRootInlines.h"
namespace WebCore {
using namespace JSC;
bool JSTextTrackCueOwner::isReachableFromOpaqueRoots(JSC::Handle<JSC::Unknown> handle, void*, AbstractSlotVisitor& visitor, ASCIILiteral* reason)
{
JSTextTrackCue* jsTextTrackCue = jsCast<JSTextTrackCue*>(handle.slot()->asCell());
TextTrackCue& textTrackCue = jsTextTrackCue->wrapped();
if (!textTrackCue.isContextStopped() && textTrackCue.hasPendingActivity()) {
if (reason) [[unlikely]]
*reason = "TextTrackCue with pending activity"_s;
return true;
}
// If the cue is not associated with a track, it is not reachable.
if (!textTrackCue.track())
return false;
if (reason) [[unlikely]]
*reason = "TextTrack is an opaque root"_s;
return containsWebCoreOpaqueRoot(visitor, textTrackCue.track());
}
template<typename Visitor>
void JSTextTrackCue::visitAdditionalChildren(Visitor& visitor)
{
if (auto* textTrack = wrapped().track())
addWebCoreOpaqueRoot(visitor, *textTrack);
}
DEFINE_VISIT_ADDITIONAL_CHILDREN(JSTextTrackCue);
} // namespace WebCore
#endif
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