| // Copyright 2019 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 WEBLAYER_PUBLIC_NAVIGATION_CONTROLLER_H_ |
| #define WEBLAYER_PUBLIC_NAVIGATION_CONTROLLER_H_ |
| |
| #include <algorithm> |
| |
| class GURL; |
| |
| namespace weblayer { |
| class NavigationObserver; |
| |
| class NavigationController { |
| public: |
| virtual ~NavigationController() {} |
| |
| virtual void AddObserver(NavigationObserver* observer) = 0; |
| |
| virtual void RemoveObserver(NavigationObserver* observer) = 0; |
| |
| virtual void Navigate(const GURL& url) = 0; |
| |
| virtual void GoBack() = 0; |
| |
| virtual void GoForward() = 0; |
| |
| virtual bool CanGoBack() = 0; |
| |
| virtual bool CanGoForward() = 0; |
| |
| virtual void Reload() = 0; |
| |
| virtual void Stop() = 0; |
| |
| // Gets the number of entries in the back/forward list. |
| virtual int GetNavigationListSize() = 0; |
| |
| // Gets the index of the current entry in the back/forward list, or -1 if |
| // there are no entries. |
| virtual int GetNavigationListCurrentIndex() = 0; |
| |
| // Gets the URL of the given entry in the back/forward list, or an empty GURL |
| // if there is no navigation entry at that index. |
| virtual GURL GetNavigationEntryDisplayURL(int index) = 0; |
| }; |
| |
| } // namespace weblayer |
| |
| #endif // WEBLAYER_PUBLIC_NAVIGATION_CONTROLLER_H_ |