| // Copyright 2021 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef UI_EVENTS_WIN_KEYBOARD_HOOK_MONITOR_IMPL_H_ |
| #define UI_EVENTS_WIN_KEYBOARD_HOOK_MONITOR_IMPL_H_ |
| |
| #include "base/component_export.h" |
| #include "base/no_destructor.h" |
| #include "base/observer_list_threadsafe.h" |
| #include "base/threading/thread_checker.h" |
| #include "ui/events/win/keyboard_hook_monitor.h" |
| #include "ui/events/win/keyboard_hook_observer.h" |
| |
| namespace ui { |
| |
| // An implementation of the KeyboardHookMonitor interface which is used to |
| // notify listeners of KeyboardHook registration events and provide status. |
| // Note that this class is bound to the thread which creates it. In the browser |
| // process, this will be the UI thread. All methods should be called on that |
| // thread and all observer methods will be run on that thread. |
| class COMPONENT_EXPORT(KEYBOARD_HOOK) KeyboardHookMonitorImpl |
| : public KeyboardHookMonitor { |
| public: |
| static KeyboardHookMonitorImpl* GetInstance(); |
| |
| KeyboardHookMonitorImpl(const KeyboardHookMonitorImpl&) = delete; |
| KeyboardHookMonitorImpl& operator=(const KeyboardHookMonitorImpl&) = delete; |
| KeyboardHookMonitorImpl(KeyboardHookMonitorImpl&&) = delete; |
| KeyboardHookMonitorImpl& operator=(KeyboardHookMonitorImpl&&) = delete; |
| ~KeyboardHookMonitorImpl() override; |
| |
| // KeyboardHookMonitor implementation. |
| void AddObserver(KeyboardHookObserver* observer) override; |
| void RemoveObserver(KeyboardHookObserver* observer) override; |
| bool IsActive() override; |
| |
| // Send a notification to all listeners in |observers_| to indicate that a |
| // keyboard hook has been registered and is listening for key events. |
| void NotifyHookRegistered(); |
| |
| // Send a notification to all listeners in |observers_| to indicate that a |
| // keyboard hook has been removed and is no longer listening to key events. |
| void NotifyHookUnregistered(); |
| |
| private: |
| friend base::NoDestructor<KeyboardHookMonitorImpl>; |
| KeyboardHookMonitorImpl(); |
| |
| bool is_hook_active_ = false; |
| base::ObserverList<KeyboardHookObserver> observers_; |
| |
| THREAD_CHECKER(thread_checker_); |
| }; |
| |
| } // namespace ui |
| |
| #endif // UI_EVENTS_WIN_KEYBOARD_HOOK_MONITOR_IMPL_H_ |