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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_STREAMS_STREAM_REGISTRY_H_
#define CONTENT_BROWSER_STREAMS_STREAM_REGISTRY_H_
#include <map>
#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "base/threading/non_thread_safe.h"
#include "content/common/content_export.h"
#include "url/gurl.h"
namespace content {
class Stream;
// Maintains a mapping of blob: URLs to active streams.
class CONTENT_EXPORT StreamRegistry : public base::NonThreadSafe {
public:
StreamRegistry();
virtual ~StreamRegistry();
// Registers a stream, and sets its URL.
void RegisterStream(scoped_refptr<Stream> stream);
// Clones a stream. Returns true on success, or false if |src_url| doesn't
// exist.
bool CloneStream(const GURL& url, const GURL& src_url);
void UnregisterStream(const GURL& url);
// Gets the stream associated with |url|. Returns NULL if there is no such
// stream.
scoped_refptr<Stream> GetStream(const GURL& url);
private:
typedef std::map<GURL, scoped_refptr<Stream> > StreamMap;
StreamMap streams_;
DISALLOW_COPY_AND_ASSIGN(StreamRegistry);
};
} // namespace content
#endif // CONTENT_BROWSER_STREAMS_STREAM_REGISTRY_H_
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