| // 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_H_ |
| #define WEBLAYER_BROWSER_BROWSER_LIST_H_ |
| |
| #include "base/containers/flat_set.h" |
| #include "base/no_destructor.h" |
| #include "base/observer_list.h" |
| #include "build/build_config.h" |
| |
| namespace weblayer { |
| |
| class BrowserImpl; |
| class BrowserListObserver; |
| |
| #if BUILDFLAG(IS_ANDROID) |
| class BrowserListProxy; |
| #endif |
| |
| // Tracks the set of browsers. |
| class BrowserList { |
| public: |
| BrowserList(const BrowserList&) = delete; |
| BrowserList& operator=(const BrowserList&) = delete; |
| |
| static BrowserList* GetInstance(); |
| |
| const base::flat_set<BrowserImpl*>& browsers() { return browsers_; } |
| |
| #if BUILDFLAG(IS_ANDROID) |
| // Returns true if there is at least one Browser in a resumed state. |
| bool HasAtLeastOneResumedBrowser(); |
| #endif |
| |
| void AddObserver(BrowserListObserver* observer); |
| void RemoveObserver(BrowserListObserver* observer); |
| |
| private: |
| friend class BrowserImpl; |
| friend class base::NoDestructor<BrowserList>; |
| |
| BrowserList(); |
| ~BrowserList(); |
| |
| void AddBrowser(BrowserImpl* browser); |
| void RemoveBrowser(BrowserImpl* browser); |
| |
| #if BUILDFLAG(IS_ANDROID) |
| void NotifyHasAtLeastOneResumedBrowserChanged(); |
| #endif |
| |
| base::flat_set<BrowserImpl*> browsers_; |
| base::ObserverList<BrowserListObserver> observers_; |
| #if BUILDFLAG(IS_ANDROID) |
| std::unique_ptr<BrowserListProxy> browser_list_proxy_; |
| #endif |
| }; |
| |
| } // namespace weblayer |
| |
| #endif // WEBLAYER_BROWSER_BROWSER_LIST_H_ |