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      1 // Copyright (c) 2012 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_EXTENSIONS_API_PREFERENCE_PREFERENCE_HELPERS_H_
      6 #define CHROME_BROWSER_EXTENSIONS_API_PREFERENCE_PREFERENCE_HELPERS_H_
      7 
      8 #include <string>
      9 
     10 #include "extensions/browser/extension_prefs_scope.h"
     11 #include "extensions/common/permissions/permission_set.h"
     12 
     13 class Profile;
     14 
     15 namespace base {
     16 class ListValue;
     17 };
     18 
     19 namespace extensions {
     20 namespace preference_helpers {
     21 
     22 bool StringToScope(const std::string& s,
     23                    extensions::ExtensionPrefsScope* scope);
     24 
     25 // Returns a string constant (defined in the API) indicating the level of
     26 // control this extension has over the specified preference.
     27 const char* GetLevelOfControl(
     28     Profile* profile,
     29     const std::string& extension_id,
     30     const std::string& browser_pref,
     31     bool incognito);
     32 
     33 // Dispatches |event_name| to extensions listening to the event and holding
     34 // |permission|. |args| is passed as arguments to the event listener.  A
     35 // key-value for the level of control the extension has over |browser_pref| is
     36 // injected into the first item of |args|, which must be of type
     37 // DictionaryValue.
     38 void DispatchEventToExtensions(
     39     Profile* profile,
     40     const std::string& event_name,
     41     base::ListValue* args,
     42     extensions::APIPermission::ID permission,
     43     bool incognito,
     44     const std::string& browser_pref);
     45 
     46 }  // namespace preference_helpers
     47 }  // namespace extensions
     48 
     49 #endif  // CHROME_BROWSER_EXTENSIONS_API_PREFERENCE_PREFERENCE_HELPERS_H_
     50