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       1             : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* vim: set ts=8 sts=2 et sw=2 tw=80: */
       3             : /* This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : #ifndef LogModulePrefWatcher_h
       8             : #define LogModulePrefWatcher_h
       9             : 
      10             : #include "nsIObserver.h"
      11             : 
      12             : namespace mozilla {
      13             : 
      14             : /**
      15             :  * Watches for changes to "logging.*" prefs and then updates the appropriate
      16             :  * LogModule's log level. Both the integer and string versions of the LogLevel
      17             :  * enum are supported.
      18             :  *
      19             :  * For example setting the pref "logging.Foo" to "Verbose" will set the
      20             :  * LogModule for "Foo" to the LogLevel::Verbose level. Setting "logging.Bar" to
      21             :  * 4 would set the LogModule for "Bar" to the LogLevel::Debug level.
      22             :  */
      23             : class LogModulePrefWatcher : public nsIObserver
      24             : {
      25             : public:
      26             :   NS_DECL_ISUPPORTS
      27             :   NS_DECL_NSIOBSERVER
      28             : 
      29             :   /**
      30             :    * Starts observing logging pref changes.
      31             :    */
      32             :   static void RegisterPrefWatcher();
      33             : 
      34             : private:
      35             :   LogModulePrefWatcher();
      36           0 :   virtual ~LogModulePrefWatcher()
      37           0 :   {
      38           0 :   }
      39             : };
      40             : } // namespace mozilla
      41             : 
      42             : #endif // LogModulePrefWatcher_h