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26 #ifndef TextTrackList_h
27 #define TextTrackList_h
29 #include "core/events/EventListener.h"
30 #include "core/events/EventTarget.h"
31 #include "core/html/HTMLMediaElement.h"
32 #include "platform/Timer.h"
33 #include "platform/heap/Handle.h"
34 #include "wtf/PassRefPtr.h"
35 #include "wtf/Vector.h"
39 class GenericEventQueue;
42 class CORE_EXPORT TextTrackList final : public EventTargetWithInlineData {
43 DEFINE_WRAPPERTYPEINFO();
46 static TextTrackList* create(HTMLMediaElement* owner) {
47 return new TextTrackList(owner);
49 ~TextTrackList() override;
51 unsigned length() const;
52 int getTrackIndex(TextTrack*);
53 int getTrackIndexRelativeToRenderedTracks(TextTrack*);
54 bool contains(TextTrack*) const;
56 TextTrack* anonymousIndexedGetter(unsigned index);
57 TextTrack* getTrackById(const AtomicString& id);
58 void append(TextTrack*);
59 void remove(TextTrack*);
62 const AtomicString& interfaceName() const override;
63 ExecutionContext* getExecutionContext() const override;
65 DEFINE_ATTRIBUTE_EVENT_LISTENER(addtrack);
66 DEFINE_ATTRIBUTE_EVENT_LISTENER(change);
67 DEFINE_ATTRIBUTE_EVENT_LISTENER(removetrack);
69 HTMLMediaElement* owner() const;
71 void scheduleChangeEvent();
72 void removeAllInbandTracks();
74 bool hasShowingTracks();
76 DECLARE_VIRTUAL_TRACE();
78 DECLARE_VIRTUAL_TRACE_WRAPPERS();
81 explicit TextTrackList(HTMLMediaElement*);
83 void scheduleTrackEvent(const AtomicString& eventName, TextTrack*);
85 void scheduleAddTrackEvent(TextTrack*);
86 void scheduleRemoveTrackEvent(TextTrack*);
88 void invalidateTrackIndexesAfterTrack(TextTrack*);
90 Member<HTMLMediaElement> m_owner;
92 Member<GenericEventQueue> m_asyncEventQueue;
94 HeapVector<TraceWrapperMember<TextTrack>> m_addTrackTracks;
95 HeapVector<TraceWrapperMember<TextTrack>> m_elementTracks;
96 HeapVector<TraceWrapperMember<TextTrack>> m_inbandTracks;
101 #endif // TextTrackList_h