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// Copyright (c) 2006-2008 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 CHROME_BROWSER_CHROME_PLUGIN_BROWSING_CONTEXT_H_
#define CHROME_BROWSER_CHROME_PLUGIN_BROWSING_CONTEXT_H_
#include <map>
#include "base/id_map.h"
#include "chrome/common/chrome_plugin_api.h"
#include "chrome/common/notification_observer.h"
class URLRequestContext;
// This class manages the mapping between CPBrowsingContexts and
// URLRequestContexts. It observes when URLRequestContexts go away, and
// invalidates the corresponding CPBrowsingContexts. CPBrowsingContexts can be
// associated with other data as well, so there can be multiple ones referring
// to a given URLRequestContext.
// Note: This class should be used on the IO thread only.
class CPBrowsingContextManager : public NotificationObserver {
public:
static CPBrowsingContextManager* Instance();
// Note: don't call these directly - use Instance() above. They are public
// so Singleton can access them.
CPBrowsingContextManager();
~CPBrowsingContextManager();
// Generate a new unique CPBrowsingContext ID from the given
// URLRequestContext. Multiple CPBrowsingContexts can map to the same
// URLRequestContext.
CPBrowsingContext Allocate(URLRequestContext* context);
// Return the URLRequestContext that this CPBrowsingContext refers to, or NULL
// if not found.
URLRequestContext* ToURLRequestContext(CPBrowsingContext id);
// Return a CPBrowsingContext ID that corresponds to the given
// URLRequestContext. This function differs from Allocate in that calling
// this multiple times with the same argument gives the same ID.
CPBrowsingContext Lookup(URLRequestContext* context);
private:
// NotificationObserver
virtual void Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details);
typedef IDMap<URLRequestContext> Map;
typedef std::map<URLRequestContext*, CPBrowsingContext> ReverseMap;
Map map_; // map of CPBrowsingContext -> URLRequestContext
ReverseMap reverse_map_; // map of URLRequestContext -> CPBrowsingContext
};
#endif // CHROME_BROWSER_CHROME_PLUGIN_BROWSING_CONTEXT_H_
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