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/*
* Copyright (C) 2011 Google Inc. All rights reserved.
* Copyright (C) 2011, 2012 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 COMPUTER, 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 COMPUTER, 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.
*/
#ifndef TextTrack_h
#define TextTrack_h
#if ENABLE(VIDEO_TRACK)
#include "ExceptionCode.h"
#include "TrackBase.h"
#include <wtf/PassOwnPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class HTMLMediaElement;
class TextTrack;
class TextTrackCue;
class TextTrackCueList;
class TextTrackClient {
public:
virtual ~TextTrackClient() { }
virtual void textTrackKindChanged(TextTrack*) = 0;
virtual void textTrackModeChanged(TextTrack*) = 0;
virtual void textTrackAddCues(TextTrack*, const TextTrackCueList*) = 0;
virtual void textTrackRemoveCues(TextTrack*, const TextTrackCueList*) = 0;
virtual void textTrackAddCue(TextTrack*, PassRefPtr<TextTrackCue>) = 0;
virtual void textTrackRemoveCue(TextTrack*, PassRefPtr<TextTrackCue>) = 0;
};
class TextTrack : public TrackBase {
public:
static PassRefPtr<TextTrack> create(ScriptExecutionContext* context, TextTrackClient* client, const AtomicString& kind, const AtomicString& label, const AtomicString& language)
{
return adoptRef(new TextTrack(context, client, kind, label, language, AddTrack));
}
virtual ~TextTrack();
void setMediaElement(HTMLMediaElement* element) { m_mediaElement = element; }
HTMLMediaElement* mediaElement() { return m_mediaElement; }
AtomicString kind() const { return m_kind; }
void setKind(const AtomicString&);
static const AtomicString& subtitlesKeyword();
static const AtomicString& captionsKeyword();
static const AtomicString& descriptionsKeyword();
static const AtomicString& chaptersKeyword();
static const AtomicString& metadataKeyword();
static bool isValidKindKeyword(const AtomicString&);
AtomicString label() const { return m_label; }
void setLabel(const AtomicString& label) { m_label = label; }
AtomicString language() const { return m_language; }
void setLanguage(const AtomicString& language) { m_language = language; }
static const AtomicString& disabledKeyword();
static const AtomicString& hiddenKeyword();
static const AtomicString& showingKeyword();
virtual AtomicString mode() const;
virtual void setMode(const AtomicString&);
bool showingByDefault() const { return m_showingByDefault; }
void setShowingByDefault(bool showing) { m_showingByDefault = showing; }
enum ReadinessState { NotLoaded = 0, Loading = 1, Loaded = 2, FailedToLoad = 3 };
ReadinessState readinessState() const { return m_readinessState; }
void setReadinessState(ReadinessState state) { m_readinessState = state; }
TextTrackCueList* cues();
TextTrackCueList* activeCues() const;
void clearClient() { m_client = 0; }
TextTrackClient* client() { return m_client; }
void addCue(PassRefPtr<TextTrackCue>, ExceptionCode&);
void removeCue(TextTrackCue*, ExceptionCode&);
void cueWillChange(TextTrackCue*);
void cueDidChange(TextTrackCue*);
DEFINE_ATTRIBUTE_EVENT_LISTENER(cuechange);
enum TextTrackType { TrackElement, AddTrack, InBand };
TextTrackType trackType() const { return m_trackType; }
int trackIndex();
void invalidateTrackIndex();
bool isRendered();
int trackIndexRelativeToRenderedTracks();
bool hasBeenConfigured() const { return m_hasBeenConfigured; }
void setHasBeenConfigured(bool flag) { m_hasBeenConfigured = flag; }
virtual bool isDefault() const { return false; }
virtual void setIsDefault(bool) { }
protected:
TextTrack(ScriptExecutionContext*, TextTrackClient*, const AtomicString& kind, const AtomicString& label, const AtomicString& language, TextTrackType);
RefPtr<TextTrackCueList> m_cues;
private:
TextTrackCueList* ensureTextTrackCueList();
HTMLMediaElement* m_mediaElement;
AtomicString m_kind;
AtomicString m_label;
AtomicString m_language;
AtomicString m_mode;
TextTrackClient* m_client;
TextTrackType m_trackType;
ReadinessState m_readinessState;
int m_trackIndex;
int m_renderedTrackIndex;
bool m_showingByDefault;
bool m_hasBeenConfigured;
};
} // namespace WebCore
#endif
#endif
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