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30 #include "core/events/EventTarget.h"
31 #include "core/html/track/TrackBase.h"
32 #include "platform/heap/Handle.h"
33 #include "wtf/text/WTFString.h"
38 class HTMLMediaElement;
41 class TextTrackCueList;
46 class TextTrack : public TrackBase, public EventTargetWithInlineData {
47 DEFINE_WRAPPERTYPEINFO();
48 REFCOUNTED_EVENT_TARGET(TrackBase);
49 WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(TextTrack);
51 static PassRefPtrWillBeRawPtr<TextTrack> create(const AtomicString& kind, const AtomicString& label, const AtomicString& language)
53 return adoptRefWillBeNoop(new TextTrack(kind, label, language, emptyAtom, AddTrack));
57 virtual void setTrackList(TextTrackList*);
58 TextTrackList* trackList() { return m_trackList; }
60 virtual void setKind(const AtomicString&) OVERRIDE;
62 static const AtomicString& subtitlesKeyword();
63 static const AtomicString& captionsKeyword();
64 static const AtomicString& descriptionsKeyword();
65 static const AtomicString& chaptersKeyword();
66 static const AtomicString& metadataKeyword();
67 static bool isValidKindKeyword(const AtomicString&);
69 static const AtomicString& disabledKeyword();
70 static const AtomicString& hiddenKeyword();
71 static const AtomicString& showingKeyword();
73 AtomicString mode() const { return m_mode; }
74 virtual void setMode(const AtomicString&);
76 enum ReadinessState { NotLoaded = 0, Loading = 1, Loaded = 2, FailedToLoad = 3 };
77 ReadinessState readinessState() const { return m_readinessState; }
78 void setReadinessState(ReadinessState state) { m_readinessState = state; }
80 TextTrackCueList* cues();
81 TextTrackCueList* activeCues() const;
83 HTMLMediaElement* mediaElement() const;
86 void addCue(PassRefPtrWillBeRawPtr<TextTrackCue>);
87 void removeCue(TextTrackCue*, ExceptionState&);
89 VTTRegionList* regions();
90 void addRegion(PassRefPtrWillBeRawPtr<VTTRegion>);
91 void removeRegion(VTTRegion*, ExceptionState&);
93 void cueWillChange(TextTrackCue*);
94 void cueDidChange(TextTrackCue*);
96 DEFINE_ATTRIBUTE_EVENT_LISTENER(cuechange);
98 enum TextTrackType { TrackElement, AddTrack, InBand };
99 TextTrackType trackType() const { return m_trackType; }
102 void invalidateTrackIndex();
105 int trackIndexRelativeToRenderedTracks();
107 bool hasBeenConfigured() const { return m_hasBeenConfigured; }
108 void setHasBeenConfigured(bool flag) { m_hasBeenConfigured = flag; }
110 virtual bool isDefault() const { return false; }
111 virtual void setIsDefault(bool) { }
113 void removeAllCues();
115 // EventTarget methods
116 virtual const AtomicString& interfaceName() const OVERRIDE;
117 virtual ExecutionContext* executionContext() const OVERRIDE;
119 virtual void trace(Visitor*) OVERRIDE;
122 TextTrack(const AtomicString& kind, const AtomicString& label, const AtomicString& language, const AtomicString& id, TextTrackType);
124 virtual bool isValidKind(const AtomicString& kind) const OVERRIDE { return isValidKindKeyword(kind); }
125 virtual AtomicString defaultKind() const OVERRIDE { return subtitlesKeyword(); }
127 RefPtrWillBeMember<TextTrackCueList> m_cues;
130 VTTRegionList* ensureVTTRegionList();
131 RefPtrWillBeMember<VTTRegionList> m_regions;
133 TextTrackCueList* ensureTextTrackCueList();
135 RawPtrWillBeMember<TextTrackList> m_trackList;
137 TextTrackType m_trackType;
138 ReadinessState m_readinessState;
140 int m_renderedTrackIndex;
141 bool m_hasBeenConfigured;
144 DEFINE_TRACK_TYPE_CASTS(TextTrack, TrackBase::TextTrack);
148 #endif // TextTrack_h