| // Copyright 2013 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. |
| |
| #include "apps/app_shim/app_shim_handler_mac.h" |
| |
| #include <map> |
| |
| #include "base/logging.h" |
| #include "base/memory/singleton.h" |
| |
| namespace apps { |
| |
| namespace { |
| |
| class AppShimHandlerRegistry { |
| public: |
| static AppShimHandlerRegistry* GetInstance() { |
| return Singleton<AppShimHandlerRegistry, |
| LeakySingletonTraits<AppShimHandlerRegistry> >::get(); |
| } |
| |
| AppShimHandler* GetForAppMode(const std::string& app_mode_id) const { |
| HandlerMap::const_iterator it = handlers_.find(app_mode_id); |
| if (it != handlers_.end()) |
| return it->second; |
| |
| return default_handler_; |
| } |
| |
| bool SetForAppMode(const std::string& app_mode_id, AppShimHandler* handler) { |
| bool inserted_or_removed = handler ? |
| handlers_.insert(HandlerMap::value_type(app_mode_id, handler)).second : |
| handlers_.erase(app_mode_id) == 1; |
| DCHECK(inserted_or_removed); |
| return inserted_or_removed; |
| } |
| |
| void SetDefaultHandler(AppShimHandler* handler) { |
| DCHECK_NE(default_handler_ == NULL, handler == NULL); |
| default_handler_ = handler; |
| } |
| |
| private: |
| friend struct DefaultSingletonTraits<AppShimHandlerRegistry>; |
| typedef std::map<std::string, AppShimHandler*> HandlerMap; |
| |
| AppShimHandlerRegistry() : default_handler_(NULL) {} |
| ~AppShimHandlerRegistry() {} |
| |
| HandlerMap handlers_; |
| AppShimHandler* default_handler_; |
| |
| DISALLOW_COPY_AND_ASSIGN(AppShimHandlerRegistry); |
| }; |
| |
| } // namespace |
| |
| // static |
| void AppShimHandler::RegisterHandler(const std::string& app_mode_id, |
| AppShimHandler* handler) { |
| DCHECK(handler); |
| AppShimHandlerRegistry::GetInstance()->SetForAppMode(app_mode_id, handler); |
| } |
| |
| // static |
| void AppShimHandler::RemoveHandler(const std::string& app_mode_id) { |
| AppShimHandlerRegistry::GetInstance()->SetForAppMode(app_mode_id, NULL); |
| } |
| |
| // static |
| AppShimHandler* AppShimHandler::GetForAppMode(const std::string& app_mode_id) { |
| return AppShimHandlerRegistry::GetInstance()->GetForAppMode(app_mode_id); |
| } |
| |
| // static |
| void AppShimHandler::SetDefaultHandler(AppShimHandler* handler) { |
| AppShimHandlerRegistry::GetInstance()->SetDefaultHandler(handler); |
| } |
| |
| } // namespace apps |