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// Copyright (c) 2011 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 COMPONENTS_PROXY_CONFIG_PREF_PROXY_CONFIG_TRACKER_H_
#define COMPONENTS_PROXY_CONFIG_PREF_PROXY_CONFIG_TRACKER_H_
#include "base/basictypes.h"
#include "base/memory/scoped_ptr.h"
#include "components/proxy_config/proxy_config_export.h"
namespace net {
class ProxyConfigService;
}
// Interface for a class that tracks proxy preferences. The purpose of the
// concrete class is to track changes in the Preferences, to translates the
// preferences to net::ProxyConfig and to push the result over to a
// net::ProxyConfigService onto the IO thread.
class PROXY_CONFIG_EXPORT PrefProxyConfigTracker {
public:
PrefProxyConfigTracker();
virtual ~PrefProxyConfigTracker();
// Creates a net::ProxyConfigService and keeps a pointer to it. After this
// call, this tracker forwards any changes of proxy preferences to the created
// ProxyConfigService. The returned ProxyConfigService must not be deleted
// before DetachFromPrefService was called. Takes ownership of the passed
// |base_service|, which can be NULL. This |base_service| provides the proxy
// settings of the OS (except of ChromeOS). This must be called on the
// UI thread.
virtual scoped_ptr<net::ProxyConfigService> CreateTrackingProxyConfigService(
scoped_ptr<net::ProxyConfigService> base_service) = 0;
// Releases the PrefService passed upon construction and the |base_service|
// passed to CreateTrackingProxyConfigService. This must be called on the UI
// thread.
virtual void DetachFromPrefService() = 0;
private:
DISALLOW_COPY_AND_ASSIGN(PrefProxyConfigTracker);
};
#endif // COMPONENTS_PROXY_CONFIG_PREF_PROXY_CONFIG_TRACKER_H_
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