|  | // Copyright 2015 The Chromium Authors | 
|  | // Use of this source code is governed by a BSD-style license that can be | 
|  | // found in the LICENSE file. | 
|  |  | 
|  | #ifndef IOS_CHROME_BROWSER_DEVICE_SHARING_MODEL_DEVICE_SHARING_MANAGER_H_ | 
|  | #define IOS_CHROME_BROWSER_DEVICE_SHARING_MODEL_DEVICE_SHARING_MANAGER_H_ | 
|  |  | 
|  | #include <string> | 
|  |  | 
|  | #include "components/keyed_service/core/keyed_service.h" | 
|  |  | 
|  | class Browser; | 
|  | class GURL; | 
|  |  | 
|  | // This manager maintains all state related to sharing the active URL to other | 
|  | // devices. It has the role of a dispatcher that shares the active URL to | 
|  | // various internal sharing services (e.g. handoff). | 
|  | class DeviceSharingManager : public KeyedService { | 
|  | public: | 
|  | DeviceSharingManager() = default; | 
|  |  | 
|  | // Set `browser` as the active browser. It will remain the active browser | 
|  | // until another active browser is set. | 
|  | virtual void SetActiveBrowser(Browser* browser) = 0; | 
|  |  | 
|  | // If `browser` is the active browser, set `active_url` as the active URL. | 
|  | // If `browser` is not the active browser, do nothing. | 
|  | virtual void UpdateActiveUrl(Browser* browser, const GURL& active_url) = 0; | 
|  |  | 
|  | // If `browser` is the active browser, set `active_title` as the active | 
|  | // page title. If `browser` is not the active browser, do nothing. | 
|  | virtual void UpdateActiveTitle(Browser* browser, | 
|  | const std::u16string& active_title) = 0; | 
|  |  | 
|  | // If `browser` is the active browser, clear the active URL and title. | 
|  | // If `browser` is not the active browser, do nothing. | 
|  | virtual void ClearActiveUrl(Browser* browser) = 0; | 
|  | }; | 
|  |  | 
|  | #endif  // IOS_CHROME_BROWSER_DEVICE_SHARING_MODEL_DEVICE_SHARING_MANAGER_H_ |