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- // Copyright 2018 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 UI_AURA_SCOPED_KEYBOARD_HOOK_H_
- #define UI_AURA_SCOPED_KEYBOARD_HOOK_H_
- #include "base/memory/weak_ptr.h"
- #include "base/threading/thread_checker.h"
- #include "ui/aura/aura_export.h"
- namespace ui {
- enum class DomCode;
- }
- namespace aura {
- class WindowTreeHost;
- // Destroying an instance of this class will clean up the KeyboardHook instance
- // owned by WindowTreeHost and prevent future system key events from being
- // captured. If the KeyboardHook or WindowTreeHost instances were already
- // destroyed, then destroying this instance is a noop.
- class AURA_EXPORT ScopedKeyboardHook {
- public:
- explicit ScopedKeyboardHook(base::WeakPtr<WindowTreeHost> weak_ptr);
- ScopedKeyboardHook(const ScopedKeyboardHook&) = delete;
- ScopedKeyboardHook& operator=(const ScopedKeyboardHook&) = delete;
- virtual ~ScopedKeyboardHook();
- // True if |dom_code| is reserved for an active KeyboardLock request.
- virtual bool IsKeyLocked(ui::DomCode dom_code);
- protected:
- ScopedKeyboardHook();
- private:
- THREAD_CHECKER(thread_checker_);
- base::WeakPtr<WindowTreeHost> window_tree_host_;
- };
- } // namespace aura
- #endif // UI_AURA_SCOPED_KEYBOARD_HOOK_H_
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