1 // Copyright 2013 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 #include "components/user_prefs/user_prefs.h" 6 7 #include "base/logging.h" 8 #include "base/memory/singleton.h" 9 #include "base/prefs/pref_service.h" 10 #include "content/public/browser/browser_context.h" 11 12 namespace user_prefs { 13 14 namespace { 15 UserDataKey()16void* UserDataKey() { 17 // We just need a unique constant. Use the address of a static that 18 // COMDAT folding won't touch in an optimizing linker. 19 static int data_key = 0; 20 return reinterpret_cast<void*>(&data_key); 21 } 22 23 } // namespace 24 25 // static Get(content::BrowserContext * context)26PrefService* UserPrefs::Get(content::BrowserContext* context) { 27 DCHECK(context); 28 DCHECK(context->GetUserData(UserDataKey())); 29 return static_cast<UserPrefs*>( 30 context->GetUserData(UserDataKey()))->prefs_; 31 } 32 33 // static Set(content::BrowserContext * context,PrefService * prefs)34void UserPrefs::Set(content::BrowserContext* context, PrefService* prefs) { 35 DCHECK(context); 36 DCHECK(prefs); 37 DCHECK(!context->GetUserData(UserDataKey())); 38 context->SetUserData(UserDataKey(), new UserPrefs(prefs)); 39 } 40 UserPrefs(PrefService * prefs)41UserPrefs::UserPrefs(PrefService* prefs) : prefs_(prefs) { 42 } 43 ~UserPrefs()44UserPrefs::~UserPrefs() { 45 } 46 47 } // namespace user_prefs 48