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/*
* Copyright (C) 2011 Google Inc. All rights reserved.
* Copyright (C) 2012, 2013, 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER 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.
*/
#ifndef TextTrackCue_h
#define TextTrackCue_h
#if ENABLE(VIDEO_TRACK)
#include "EventTarget.h"
#include "HTMLElement.h"
#include <wtf/MediaTime.h>
#include <wtf/NeverDestroyed.h>
#include <wtf/RefCounted.h>
namespace WebCore {
class TextTrack;
class TextTrackCue : public RefCounted<TextTrackCue>, public EventTargetWithInlineData {
public:
static PassRefPtr<TextTrackCue> create(ScriptExecutionContext&, double start, double end, const String& content);
static PassRefPtr<TextTrackCue> create(ScriptExecutionContext&, const MediaTime& start, const MediaTime& end, const String& content);
static const AtomicString& cueShadowPseudoId()
{
static NeverDestroyed<const AtomicString> cue("cue", AtomicString::ConstructFromLiteral);
return cue;
}
virtual ~TextTrackCue();
TextTrack* track() const;
void setTrack(TextTrack*);
const String& id() const { return m_id; }
void setId(const String&);
MediaTime startMediaTime() const { return m_startTime; }
double startTime() const { return startMediaTime().toDouble(); }
void setStartTime(const MediaTime&);
void setStartTime(double, ExceptionCode&);
MediaTime endMediaTime() const { return m_endTime; }
double endTime() const { return endMediaTime().toDouble(); }
void setEndTime(const MediaTime&);
void setEndTime(double, ExceptionCode&);
bool pauseOnExit() const { return m_pauseOnExit; }
void setPauseOnExit(bool);
int cueIndex();
void invalidateCueIndex();
using EventTarget::dispatchEvent;
virtual bool dispatchEvent(Event&) override;
bool isActive();
virtual void setIsActive(bool);
virtual EventTargetInterface eventTargetInterface() const override final { return TextTrackCueEventTargetInterfaceType; }
virtual ScriptExecutionContext* scriptExecutionContext() const override final { return &m_scriptExecutionContext; }
virtual bool isOrderedBefore(const TextTrackCue*) const;
virtual bool isPositionedAbove(const TextTrackCue* cue) const { return isOrderedBefore(cue); }
bool hasEquivalentStartTime(const TextTrackCue&) const;
enum CueType {
Data,
Generic,
WebVTT
};
virtual CueType cueType() const = 0;
virtual bool isRenderable() const { return false; }
enum CueMatchRules {
MatchAllFields,
IgnoreDuration,
};
virtual bool isEqual(const TextTrackCue&, CueMatchRules) const;
virtual bool cueContentsMatch(const TextTrackCue&) const;
virtual bool doesExtendCue(const TextTrackCue&) const;
void willChange();
virtual void didChange();
using RefCounted<TextTrackCue>::ref;
using RefCounted<TextTrackCue>::deref;
protected:
TextTrackCue(ScriptExecutionContext&, const MediaTime& start, const MediaTime& end);
Document& ownerDocument() { return downcast<Document>(m_scriptExecutionContext); }
private:
virtual void refEventTarget() override final { ref(); }
virtual void derefEventTarget() override final { deref(); }
String m_id;
MediaTime m_startTime;
MediaTime m_endTime;
int m_cueIndex;
int m_processingCueChanges;
TextTrack* m_track;
ScriptExecutionContext& m_scriptExecutionContext;
bool m_isActive : 1;
bool m_pauseOnExit : 1;
};
} // namespace WebCore
#endif
#endif
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