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/*
* Copyright (C) 2011 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef TextTrackLoader_h
#define TextTrackLoader_h
#include "core/fetch/ResourceClient.h"
#include "core/fetch/ResourcePtr.h"
#include "core/fetch/TextTrackResource.h"
#include "core/html/track/WebVTTParser.h"
#include "core/platform/Timer.h"
#include "wtf/OwnPtr.h"
namespace WebCore {
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 ResourceClient, 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();
enum State { Idle, Loading, Finished, Failed };
State loadState() { return m_state; }
void getNewCues(Vector<RefPtr<TextTrackCue> >& outputCues);
#if ENABLE(WEBVTT_REGIONS)
void getNewRegions(Vector<RefPtr<TextTrackRegion> >& outputRegions);
#endif
private:
// ResourceClient
virtual void notifyFinished(Resource*);
virtual void deprecatedDidReceiveResource(Resource*);
// WebVTTParserClient
virtual void newCuesParsed();
#if ENABLE(WEBVTT_REGIONS)
virtual void newRegionsParsed();
#endif
virtual void fileFailedToParse();
TextTrackLoader(TextTrackLoaderClient*, ScriptExecutionContext*);
void processNewCueData(Resource*);
void cueLoadTimerFired(Timer<TextTrackLoader>*);
void corsPolicyPreventedLoad();
TextTrackLoaderClient* m_client;
OwnPtr<WebVTTParser> m_cueParser;
ResourcePtr<TextTrackResource> m_cachedCueData;
ScriptExecutionContext* m_scriptExecutionContext;
Timer<TextTrackLoader> m_cueLoadTimer;
String m_crossOriginMode;
State m_state;
unsigned m_parseOffset;
bool m_newCuesAvailable;
};
} // namespace WebCore
#endif
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