/* * 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" using namespace JSC; namespace WebCore { bool JSTextTrackCueOwner::isReachableFromOpaqueRoots(JSC::Handle<JSC::Unknown> handle, void*, SlotVisitor& visitor) { 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()) return true; // If the cue is not associated with a track, it is not reachable. if (!textTrackCue.track()) return false; return visitor.containsOpaqueRoot(root(textTrackCue.track())); } JSValue toJSNewlyCreated(ExecState*, JSDOMGlobalObject* globalObject, Ref<TextTrackCue>&& cue) { // This switch will make more sense once we support DataCue 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