| // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| // |
| // This class implements a simplified and much stripped down version of |
| // Chrome's app/resource_bundle machinery. It notably avoids unwanted |
| // dependencies on things like Skia. |
| // |
| |
| #ifndef CHROME_FRAME_SIMPLE_RESOURCE_LOADER_H_ |
| #define CHROME_FRAME_SIMPLE_RESOURCE_LOADER_H_ |
| |
| #include <windows.h> |
| #include <string> |
| #include <vector> |
| |
| #include "base/file_path.h" |
| #include "base/gtest_prod_util.h" |
| #include "base/memory/singleton.h" |
| |
| namespace ui { |
| class DataPack; |
| } // namespace ui |
| |
| class SimpleResourceLoader { |
| public: |
| |
| static SimpleResourceLoader* GetInstance(); |
| |
| // Returns the language tag for the active language. |
| static std::wstring GetLanguage(); |
| |
| // Helper method to return the string resource identified by message_id |
| // from the currently loaded locale dll. |
| static std::wstring Get(int message_id); |
| |
| // Retrieves the HINSTANCE of the loaded module handle. May be NULL if a |
| // resource DLL could not be loaded. |
| HMODULE GetResourceModuleHandle(); |
| |
| // Retrieves the preferred languages for the current thread, adding them to |
| // |language_tags|. |
| static void GetPreferredLanguages(std::vector<std::wstring>* language_tags); |
| |
| // Populates |locales_path| with the path to the "Locales" directory. |
| static void DetermineLocalesDirectory(FilePath* locales_path); |
| |
| // Returns false if |language_tag| is malformed. |
| static bool IsValidLanguageTag(const std::wstring& language_tag); |
| |
| private: |
| SimpleResourceLoader(); |
| ~SimpleResourceLoader(); |
| |
| // Finds the most-preferred resource dll and language pack for the laguages |
| // in |language_tags| |
| // in |locales_path|. |
| // |
| // Returns true on success with a handle to the DLL that was loaded in |
| // |dll_handle|, the data pack in |data_pack| and the locale language in |
| // the |language| parameter. |
| static bool LoadLocalePack(const std::vector<std::wstring>& language_tags, |
| const FilePath& locales_path, |
| HMODULE* dll_handle, |
| ui::DataPack** data_pack, |
| std::wstring* language); |
| |
| // Returns the string resource identified by message_id from the currently |
| // loaded locale dll. |
| std::wstring GetLocalizedResource(int message_id); |
| |
| friend struct DefaultSingletonTraits<SimpleResourceLoader>; |
| |
| FRIEND_TEST_ALL_PREFIXES(SimpleResourceLoaderTest, LoadLocaleDll); |
| |
| std::wstring language_; |
| ui::DataPack* data_pack_; |
| |
| HINSTANCE locale_dll_handle_; |
| }; |
| |
| #endif // CHROME_FRAME_SIMPLE_RESOURCE_LOADER_H_ |