| // Copyright 2020 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_BROWSER_BROWSER_LIST_OBSERVER_H_ |
| #define WEBLAYER_BROWSER_BROWSER_LIST_OBSERVER_H_ |
| |
| #include "base/observer_list_types.h" |
| #include "build/build_config.h" |
| |
| namespace weblayer { |
| |
| class Browser; |
| |
| class BrowserListObserver : public base::CheckedObserver { |
| public: |
| #if BUILDFLAG(IS_ANDROID) |
| // Called when the value of BrowserList::HasAtLeastOneResumedBrowser() |
| // changes. |
| virtual void OnHasAtLeastOneResumedBrowserStateChanged(bool new_value) {} |
| #endif |
| |
| virtual void OnBrowserCreated(Browser* browser) {} |
| |
| virtual void OnBrowserDestroyed(Browser* browser) {} |
| |
| protected: |
| ~BrowserListObserver() override = default; |
| }; |
| |
| } // namespace weblayer |
| |
| #endif // WEBLAYER_BROWSER_BROWSER_LIST_OBSERVER_H_ |