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/*
* Copyright (C) 2011 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_TRACK)
#include "JSTextTrackCue.h"
#include "JSDataCue.h"
#include "JSTrackCustom.h"
#include "JSVTTCue.h"
#include "TextTrack.h"
namespace WebCore {
using namespace JSC;
bool JSTextTrackCueOwner::isReachableFromOpaqueRoots(JSC::Handle<JSC::Unknown> handle, void*, SlotVisitor& visitor, const char** reason)
{
JSTextTrackCue* jsTextTrackCue = jsCast<JSTextTrackCue*>(handle.slot()->asCell());
TextTrackCue& textTrackCue = jsTextTrackCue->wrapped();
// If the cue is firing event listeners, its wrapper is reachable because
// the wrapper is responsible for marking those event listeners.
if (textTrackCue.isFiringEventListeners()) {
if (UNLIKELY(reason))
*reason = "TextTrackCue is firing event listeners";
return true;
}
// If the cue is not associated with a track, it is not reachable.
if (!textTrackCue.track())
return false;
if (UNLIKELY(reason))
*reason = "TextTrack is an opaque root";
return visitor.containsOpaqueRoot(root(textTrackCue.track()));
}
JSValue toJSNewlyCreated(ExecState*, JSDOMGlobalObject* globalObject, Ref<TextTrackCue>&& cue)
{
switch (cue->cueType()) {
case TextTrackCue::Data:
return createWrapper<DataCue>(globalObject, WTFMove(cue));
case TextTrackCue::WebVTT:
case TextTrackCue::Generic:
return createWrapper<VTTCue>(globalObject, WTFMove(cue));
default:
ASSERT_NOT_REACHED();
return jsNull();
}
}
JSValue toJS(ExecState* state, JSDOMGlobalObject* globalObject, TextTrackCue& cue)
{
return wrap(state, globalObject, cue);
}
void JSTextTrackCue::visitAdditionalChildren(SlotVisitor& visitor)
{
if (TextTrack* textTrack = wrapped().track())
visitor.addOpaqueRoot(root(textTrack));
}
} // namespace WebCore
#endif