| // Copyright (c) 2012 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. |
| |
| #ifndef CHROME_BROWSER_UI_WEBUI_SIGNIN_LOGIN_UI_SERVICE_H_ |
| #define CHROME_BROWSER_UI_WEBUI_SIGNIN_LOGIN_UI_SERVICE_H_ |
| |
| #include "base/basictypes.h" |
| #include "base/observer_list.h" |
| #include "components/browser_context_keyed_service/browser_context_keyed_service.h" |
| |
| class Browser; |
| class Profile; |
| |
| // The LoginUIService helps track per-profile information for the login UI - |
| // for example, whether there is login UI currently on-screen. |
| class LoginUIService : public BrowserContextKeyedService { |
| public: |
| // Various UI components implement this API to allow LoginUIService to |
| // manipulate their associated login UI. |
| class LoginUI { |
| public: |
| // Invoked when the login UI should be brought to the foreground. |
| virtual void FocusUI() = 0; |
| |
| // Invoked when the login UI should be closed. This can be invoked if the |
| // user takes an action that should display new login UI. |
| virtual void CloseUI() = 0; |
| protected: |
| virtual ~LoginUI() {} |
| }; |
| |
| // Interface for obervers of LoginUIService. |
| class Observer { |
| public: |
| // Called when a new login UI is shown. |
| // |ui| The login UI that was just shown. Will never be null. |
| virtual void OnLoginUIShown(LoginUI* ui) = 0; |
| |
| // Called when a login UI is closed. |
| // |ui| The login UI that was just closed; will never be null. |
| virtual void OnLoginUIClosed(LoginUI* ui) = 0; |
| |
| protected: |
| virtual ~Observer() {} |
| }; |
| |
| explicit LoginUIService(Profile* profile); |
| virtual ~LoginUIService(); |
| |
| // Gets the currently active login UI, or null if no login UI is active. |
| LoginUI* current_login_ui() const { |
| return ui_; |
| } |
| |
| // |observer| The observer to add or remove; cannot be NULL. |
| void AddObserver(Observer* observer); |
| void RemoveObserver(Observer* observer); |
| |
| // Sets the currently active login UI. It is illegal to call this if there is |
| // already login UI visible. |
| void SetLoginUI(LoginUI* ui); |
| |
| // Called when login UI is closed. If the passed UI is the current login UI, |
| // sets current_login_ui() to null. |
| void LoginUIClosed(LoginUI* ui); |
| |
| // Delegate to an existing login dialog if one exists. |
| // If not, we make a new popup dialog window, and set it to |
| // chrome://signin to ask the user to sign in to chrome. |
| void ShowLoginPopup(); |
| |
| private: |
| // Weak pointer to the currently active login UI, or null if none. |
| LoginUI* ui_; |
| Profile* profile_; |
| |
| // List of observers. |
| ObserverList<Observer> observer_list_; |
| |
| DISALLOW_COPY_AND_ASSIGN(LoginUIService); |
| }; |
| |
| #endif // CHROME_BROWSER_UI_WEBUI_SIGNIN_LOGIN_UI_SERVICE_H_ |