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      1 /*
      2  * Copyright (C) 2011 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef LoadableTextTrack_h
     27 #define LoadableTextTrack_h
     28 
     29 #include "core/html/track/TextTrack.h"
     30 #include "core/loader/TextTrackLoader.h"
     31 #include "wtf/PassRefPtr.h"
     32 
     33 namespace WebCore {
     34 
     35 class HTMLTrackElement;
     36 class LoadableTextTrack;
     37 
     38 class LoadableTextTrack : public TextTrack, private TextTrackLoaderClient {
     39 public:
     40     static PassRefPtr<LoadableTextTrack> create(HTMLTrackElement* track)
     41     {
     42         return adoptRef(new LoadableTextTrack(track));
     43     }
     44     virtual ~LoadableTextTrack();
     45 
     46     void scheduleLoad(const KURL&);
     47 
     48     // This shadows TextTrack::clearClient, but need not be virtual.
     49     void clearClient();
     50 
     51     size_t trackElementIndex();
     52     HTMLTrackElement* trackElement() { return m_trackElement; }
     53 
     54     virtual bool isDefault() const OVERRIDE { return m_isDefault; }
     55     virtual void setIsDefault(bool isDefault) OVERRIDE  { m_isDefault = isDefault; }
     56 
     57 private:
     58     // TextTrackLoaderClient
     59     virtual void newCuesAvailable(TextTrackLoader*) OVERRIDE;
     60     virtual void cueLoadingCompleted(TextTrackLoader*, bool loadingFailed) OVERRIDE;
     61     virtual void newRegionsAvailable(TextTrackLoader*) OVERRIDE;
     62 
     63     LoadableTextTrack(HTMLTrackElement*);
     64 
     65     void loadTimerFired(Timer<LoadableTextTrack>*);
     66 
     67     HTMLTrackElement* m_trackElement;
     68     Timer<LoadableTextTrack> m_loadTimer;
     69     OwnPtr<TextTrackLoader> m_loader;
     70     KURL m_url;
     71     bool m_isDefault;
     72 };
     73 } // namespace WebCore
     74 
     75 #endif
     76