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// Copyright 2018 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_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 : uint32_t;
}
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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