third_party/WebKit/Source/core/html/track/VideoTrack.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef VideoTrack_h
   6 #define VideoTrack_h
   7
   8 #include "bindings/core/v8/ScriptWrappable.h"
   9 #include "core/CoreExport.h"
  10 #include "core/html/track/TrackBase.h"
  11
  12 namespace blink {
  13
  14 class CORE_EXPORT VideoTrack final : public GarbageCollectedFinalized<VideoTrack>, public TrackBase, public ScriptWrappable {
  15     DEFINE_WRAPPERTYPEINFO();
  16     USING_GARBAGE_COLLECTED_MIXIN(VideoTrack);
  17 public:
  18     static VideoTrack* create(const String& id, const AtomicString& kind, const AtomicString& label, const AtomicString& language, bool selected)
  19     {
  20         return new VideoTrack(id, kind, label, language, selected);
  21     }
  22
  23     ~VideoTrack() override;
  24     DECLARE_VIRTUAL_TRACE();
  25
  26     bool selected() const { return m_selected; }
  27     void setSelected(bool);
  28
  29     // Set selected to false without notifying the owner media element. Used when
  30     // another video track is selected, implicitly deselecting this one.
  31     void clearSelected() { m_selected = false; }
  32
  33     // Valid kind keywords.
  34     static const AtomicString& alternativeKeyword();
  35     static const AtomicString& captionsKeyword();
  36     static const AtomicString& mainKeyword();
  37     static const AtomicString& signKeyword();
  38     static const AtomicString& subtitlesKeyword();
  39     static const AtomicString& commentaryKeyword();
  40
  41     static bool isValidKindKeyword(const String&);
  42
  43 private:
  44     VideoTrack(const String& id, const AtomicString& kind, const AtomicString& label, const AtomicString& language, bool selected);
  45
  46     // TrackBase
  47     bool isValidKind(const AtomicString& kind) const override { return isValidKindKeyword(kind); }
  48     AtomicString defaultKind() const override;
  49
  50     bool m_selected;
  51 };
  52
  53 DEFINE_TRACK_TYPE_CASTS(VideoTrack, TrackBase::VideoTrack);
  54
  55 } // namespace blink
  56
  57 #endif // VideoTrack_h