#ifndef TextTrackLoader_h
#define TextTrackLoader_h
#if ENABLE(VIDEO_TRACK)
#include "CachedResourceClient.h"
#include "CachedResourceHandle.h"
#include "Timer.h"
#include "WebVTTParser.h"
#include <wtf/OwnPtr.h>
namespace WebCore {
class CachedTextTrack;
class Document;
class TextTrackLoader;
class ScriptExecutionContext;
class TextTrackLoaderClient {
public:
virtual ~TextTrackLoaderClient() { }
virtual bool shouldLoadCues(TextTrackLoader*) = 0;
virtual void newCuesAvailable(TextTrackLoader*) = 0;
virtual void cueLoadingStarted(TextTrackLoader*) = 0;
virtual void cueLoadingCompleted(TextTrackLoader*, bool loadingFailed) = 0;
#if ENABLE(WEBVTT_REGIONS)
virtual void newRegionsAvailable(TextTrackLoader*) = 0;
#endif
};
class TextTrackLoader : public CachedResourceClient, private WebVTTParserClient {
WTF_MAKE_NONCOPYABLE(TextTrackLoader);
WTF_MAKE_FAST_ALLOCATED;
public:
static PassOwnPtr<TextTrackLoader> create(TextTrackLoaderClient* client, ScriptExecutionContext* context)
{
return adoptPtr(new TextTrackLoader(client, context));
}
virtual ~TextTrackLoader();
bool load(const KURL&, const String& crossOriginMode);
void cancelLoad();
void getNewCues(Vector<RefPtr<TextTrackCue> >& outputCues);
#if ENABLE(WEBVTT_REGIONS)
void getNewRegions(Vector<RefPtr<TextTrackRegion> >& outputRegions);
#endif
private:
virtual void notifyFinished(CachedResource*);
virtual void deprecatedDidReceiveCachedResource(CachedResource*);
virtual void newCuesParsed();
#if ENABLE(WEBVTT_REGIONS)
virtual void newRegionsParsed();
#endif
virtual void fileFailedToParse();
TextTrackLoader(TextTrackLoaderClient*, ScriptExecutionContext*);
void processNewCueData(CachedResource*);
void cueLoadTimerFired(Timer<TextTrackLoader>*);
void corsPolicyPreventedLoad();
enum State { Idle, Loading, Finished, Failed };
TextTrackLoaderClient* m_client;
OwnPtr<WebVTTParser> m_cueParser;
CachedResourceHandle<CachedTextTrack> m_cachedCueData;
ScriptExecutionContext* m_scriptExecutionContext;
Timer<TextTrackLoader> m_cueLoadTimer;
String m_crossOriginMode;
State m_state;
unsigned m_parseOffset;
bool m_newCuesAvailable;
};
}
#endif
#endif