chrome/browser/net/pref_proxy_config_tracker.h

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_NET_PREF_PROXY_CONFIG_TRACKER_H_
   6 #define CHROME_BROWSER_NET_PREF_PROXY_CONFIG_TRACKER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/memory/scoped_ptr.h"
  10
  11 namespace net {
  12 class ProxyConfigService;
  13 }
  14
  15 // Interface for a class that tracks proxy preferences. The purpose of the
  16 // concrete class is to track changes in the Preferences, to translates the
  17 // preferences to net::ProxyConfig and to push the result over to a
  18 // net::ProxyConfigService onto the IO thread.
  19 class PrefProxyConfigTracker {
  20  public:
  21   PrefProxyConfigTracker();
  22   virtual ~PrefProxyConfigTracker();
  23
  24   // Creates a net::ProxyConfigService and keeps a pointer to it. After this
  25   // call, this tracker forwards any changes of proxy preferences to the created
  26   // ProxyConfigService. The returned ProxyConfigService must not be deleted
  27   // before DetachFromPrefService was called. Takes ownership of the passed
  28   // |base_service|, which can be NULL. This |base_service| provides the proxy
  29   // settings of the OS (except of ChromeOS). This must be called on the
  30   // UI thread.
  31   virtual scoped_ptr<net::ProxyConfigService> CreateTrackingProxyConfigService(
  32       scoped_ptr<net::ProxyConfigService> base_service) = 0;
  33
  34   // Releases the PrefService passed upon construction and the |base_service|
  35   // passed to CreateTrackingProxyConfigService. This must be called on the UI
  36   // thread.
  37   virtual void DetachFromPrefService() = 0;
  38
  39  private:
  40   DISALLOW_COPY_AND_ASSIGN(PrefProxyConfigTracker);
  41 };
  42
  43 #endif  // CHROME_BROWSER_NET_PREF_PROXY_CONFIG_TRACKER_H_