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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_EXTENSION_SCOPED_PREFS_H_
      6 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_SCOPED_PREFS_H_
      7 
      8 class ExtensionScopedPrefs {
      9  public:
     10   ExtensionScopedPrefs() {}
     11   ~ExtensionScopedPrefs() {}
     12 
     13   // Sets the pref |key| for extension |id| to |value|.
     14   virtual void UpdateExtensionPref(const std::string& id,
     15                                    const std::string& key,
     16                                    base::Value* value) = 0;
     17 
     18   // Deletes the pref dictionary for extension |id|.
     19   virtual void DeleteExtensionPrefs(const std::string& id) = 0;
     20 
     21   // Reads a boolean pref |pref_key| from extension with id |extension_id|.
     22   virtual bool ReadPrefAsBoolean(const std::string& extension_id,
     23                                  const std::string& pref_key,
     24                                  bool* out_value) const = 0;
     25 
     26   // Reads an integer pref |pref_key| from extension with id |extension_id|.
     27   virtual bool ReadPrefAsInteger(const std::string& extension_id,
     28                                  const std::string& pref_key,
     29                                  int* out_value) const = 0;
     30 
     31   // Reads a string pref |pref_key| from extension with id |extension_id|.
     32   virtual bool ReadPrefAsString(const std::string& extension_id,
     33                                 const std::string& pref_key,
     34                                 std::string* out_value) const = 0;
     35 
     36   // Reads a list pref |pref_key| from extension with id |extension_id|.
     37   virtual bool ReadPrefAsList(const std::string& extension_id,
     38                               const std::string& pref_key,
     39                               const base::ListValue** out_value) const = 0;
     40 
     41   // Reads a dictionary pref |pref_key| from extension with id |extension_id|.
     42   virtual bool ReadPrefAsDictionary(
     43       const std::string& extension_id,
     44       const std::string& pref_key,
     45       const base::DictionaryValue** out_value) const = 0;
     46 
     47   // Returns true if the prefs contain an entry for an extension with id
     48   // |extension_id|.
     49   virtual bool HasPrefForExtension(const std::string& extension_id) const = 0;
     50 };
     51 
     52 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_SCOPED_PREFS_H_
     53