1 // Copyright 2014 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 EXTENSIONS_BROWSER_API_EXTENSIONS_API_CLIENT_H_ 6 #define EXTENSIONS_BROWSER_API_EXTENSIONS_API_CLIENT_H_ 7 8 #include <map> 9 10 #include "base/memory/ref_counted.h" 11 #include "extensions/browser/api/storage/settings_namespace.h" 12 13 template <class T> 14 class ObserverListThreadSafe; 15 16 namespace content { 17 class BrowserContext; 18 } 19 20 namespace extensions { 21 22 class SettingsObserver; 23 class SettingsStorageFactory; 24 class ValueStoreCache; 25 26 // Allows the embedder of the extensions module to customize its support for 27 // API features. The embedder must create a single instance in the browser 28 // process. Provides a default implementation that does nothing. 29 class ExtensionsAPIClient { 30 public: 31 // Construction sets the single instance. 32 ExtensionsAPIClient(); 33 34 // Destruction clears the single instance. 35 virtual ~ExtensionsAPIClient(); 36 37 // Returns the single instance of |this|. 38 static ExtensionsAPIClient* Get(); 39 40 // Storage API support. 41 42 // Add any additional value store caches (e.g. for chrome.storage.managed) 43 // to |caches|. By default adds nothing. 44 virtual void AddAdditionalValueStoreCaches( 45 content::BrowserContext* context, 46 const scoped_refptr<SettingsStorageFactory>& factory, 47 const scoped_refptr<ObserverListThreadSafe<SettingsObserver> >& observers, 48 std::map<settings_namespace::Namespace, ValueStoreCache*>* caches); 49 50 // NOTE: If this interface gains too many methods (perhaps more than 20) it 51 // should be split into one interface per API. 52 }; 53 54 } // namespace extensions 55 56 #endif // EXTENSIONS_BROWSER_API_EXTENSIONS_API_CLIENT_H_ 57
