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_EXTENSIONS_EXTERNAL_PREF_EXTENSION_LOADER_H_ 6 #define CHROME_BROWSER_EXTENSIONS_EXTERNAL_PREF_EXTENSION_LOADER_H_ 7 #pragma once 8 9 #include "chrome/browser/extensions/external_extension_loader.h" 10 11 #include <string> 12 13 #include "base/memory/scoped_ptr.h" 14 #include "base/values.h" 15 16 // A specialization of the ExternalExtensionLoader that uses a json file to 17 // look up which external extensions are registered. 18 // Instances of this class are expected to be created and destroyed on the UI 19 // thread and they are expecting public method calls from the UI thread. 20 class ExternalPrefExtensionLoader : public ExternalExtensionLoader { 21 public: 22 // |base_path_key| is the directory containing the external_extensions.json 23 // file. Relative file paths to extension files are resolved relative 24 // to this path. 25 explicit ExternalPrefExtensionLoader(int base_path_key); 26 27 virtual const FilePath GetBaseCrxFilePath(); 28 29 protected: 30 virtual void StartLoading(); 31 32 private: 33 friend class base::RefCountedThreadSafe<ExternalExtensionLoader>; 34 35 virtual ~ExternalPrefExtensionLoader() {} 36 37 void LoadOnFileThread(); 38 39 int base_path_key_; 40 FilePath base_path_; 41 42 DISALLOW_COPY_AND_ASSIGN(ExternalPrefExtensionLoader); 43 }; 44 45 // A simplified version of ExternalPrefExtensionLoader that loads the dictionary 46 // from json data specified in a string. 47 class ExternalTestingExtensionLoader : public ExternalExtensionLoader { 48 public: 49 ExternalTestingExtensionLoader( 50 const std::string& json_data, 51 const FilePath& fake_base_path); 52 53 virtual const FilePath GetBaseCrxFilePath(); 54 55 protected: 56 virtual void StartLoading(); 57 58 private: 59 friend class base::RefCountedThreadSafe<ExternalExtensionLoader>; 60 61 virtual ~ExternalTestingExtensionLoader(); 62 63 FilePath fake_base_path_; 64 scoped_ptr<DictionaryValue> testing_prefs_; 65 66 DISALLOW_COPY_AND_ASSIGN(ExternalTestingExtensionLoader); 67 }; 68 69 #endif // CHROME_BROWSER_EXTENSIONS_EXTERNAL_PREF_EXTENSION_LOADER_H_ 70
