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| 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 TrackListBase_h |
| 6 #define TrackListBase_h |
| 7 |
| 8 #include "core/events/EventTarget.h" |
| 9 |
| 10 #include "core/html/HTMLMediaElement.h" |
| 11 #include "core/html/track/TrackEvent.h" |
| 12 |
| 13 namespace WebCore { |
| 14 |
| 15 template<class T> |
| 16 class TrackListBase : public RefCountedWillBeRefCountedGarbageCollected<TrackLis
tBase<T> >, public EventTargetWithInlineData { |
| 17 REFCOUNTED_EVENT_TARGET(TrackListBase); |
| 18 WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(TrackListBase); |
| 19 public: |
| 20 explicit TrackListBase(HTMLMediaElement* mediaElement) |
| 21 : m_mediaElement(mediaElement) |
| 22 { |
| 23 } |
| 24 |
| 25 virtual ~TrackListBase() |
| 26 { |
| 27 #if !ENABLE(OILPAN) |
| 28 ASSERT(m_tracks.isEmpty()); |
| 29 ASSERT(!m_mediaElement); |
| 30 #endif |
| 31 } |
| 32 |
| 33 unsigned length() const { return m_tracks.size(); } |
| 34 T* anonymousIndexedGetter(unsigned index) const |
| 35 { |
| 36 if (index >= m_tracks.size()) |
| 37 return 0; |
| 38 return m_tracks[index].get(); |
| 39 } |
| 40 |
| 41 T* getTrackById(const String& id) const |
| 42 { |
| 43 for (unsigned i = 0; i < m_tracks.size(); ++i) { |
| 44 if (m_tracks[i]->id() == id) |
| 45 return m_tracks[i].get(); |
| 46 } |
| 47 |
| 48 return 0; |
| 49 } |
| 50 |
| 51 DEFINE_ATTRIBUTE_EVENT_LISTENER(change); |
| 52 DEFINE_ATTRIBUTE_EVENT_LISTENER(addtrack); |
| 53 DEFINE_ATTRIBUTE_EVENT_LISTENER(removetrack); |
| 54 |
| 55 // EventTarget interface |
| 56 virtual ExecutionContext* executionContext() const OVERRIDE |
| 57 { |
| 58 if (m_mediaElement) |
| 59 return m_mediaElement->executionContext(); |
| 60 return 0; |
| 61 } |
| 62 |
| 63 #if !ENABLE(OILPAN) |
| 64 void shutdown() |
| 65 { |
| 66 removeAll(); |
| 67 m_mediaElement = nullptr; |
| 68 } |
| 69 #endif |
| 70 |
| 71 void add(PassRefPtrWillBeRawPtr<T> prpTrack) |
| 72 { |
| 73 RefPtrWillBeRawPtr<T> track = prpTrack; |
| 74 |
| 75 track->setMediaElement(m_mediaElement); |
| 76 m_tracks.append(track); |
| 77 scheduleTrackEvent(EventTypeNames::addtrack, track.release()); |
| 78 } |
| 79 |
| 80 void remove(blink::WebMediaPlayer::TrackId trackId) |
| 81 { |
| 82 for (unsigned i = 0; i < m_tracks.size(); ++i) { |
| 83 if (m_tracks[i]->trackId() != trackId) |
| 84 continue; |
| 85 |
| 86 m_tracks[i]->setMediaElement(0); |
| 87 scheduleTrackEvent(EventTypeNames::removetrack, m_tracks[i]); |
| 88 m_tracks.remove(i); |
| 89 return; |
| 90 } |
| 91 ASSERT_NOT_REACHED(); |
| 92 } |
| 93 |
| 94 void removeAll() |
| 95 { |
| 96 for (unsigned i = 0; i < m_tracks.size(); ++i) |
| 97 m_tracks[i]->setMediaElement(0); |
| 98 |
| 99 m_tracks.clear(); |
| 100 } |
| 101 |
| 102 void scheduleChangeEvent() |
| 103 { |
| 104 EventInit initializer; |
| 105 initializer.bubbles = false; |
| 106 initializer.cancelable = false; |
| 107 RefPtrWillBeRawPtr<Event> event = Event::create(EventTypeNames::change,
initializer); |
| 108 event->setTarget(this); |
| 109 m_mediaElement->scheduleEvent(event); |
| 110 } |
| 111 |
| 112 Node* owner() const { return m_mediaElement; } |
| 113 |
| 114 void trace(Visitor* visitor) |
| 115 { |
| 116 visitor->trace(m_tracks); |
| 117 visitor->trace(m_mediaElement); |
| 118 EventTargetWithInlineData::trace(visitor); |
| 119 } |
| 120 |
| 121 private: |
| 122 void scheduleTrackEvent(const AtomicString& eventName, PassRefPtrWillBeRawPt
r<T> track) |
| 123 { |
| 124 TrackEventInit initializer; |
| 125 initializer.track = track; |
| 126 initializer.bubbles = false; |
| 127 initializer.cancelable = false; |
| 128 RefPtrWillBeRawPtr<Event> event = TrackEvent::create(eventName, initiali
zer); |
| 129 event->setTarget(this); |
| 130 m_mediaElement->scheduleEvent(event); |
| 131 } |
| 132 |
| 133 WillBeHeapVector<RefPtrWillBeMember<T> > m_tracks; |
| 134 RawPtrWillBeMember<HTMLMediaElement> m_mediaElement; |
| 135 }; |
| 136 |
| 137 } |
| 138 |
| 139 #endif |
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