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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_EVENTS_KEYBOARD_HOOK_BASE_H_
#define UI_EVENTS_KEYBOARD_HOOK_BASE_H_
#include <memory>
#include "base/macros.h"
#include "ui/events/keyboard_hook.h"
namespace ui {
enum class DomCode;
class KeyEvent;
class KeyboardHookBase : public KeyboardHook {
public:
KeyboardHookBase(base::Optional<base::flat_set<DomCode>> dom_codes,
KeyEventCallback callback);
~KeyboardHookBase() override;
// KeyboardHook implementation.
bool IsKeyLocked(DomCode dom_code) const override;
virtual bool RegisterHook();
protected:
// Indicates whether |dom_code| should be intercepted by the keyboard hook.
bool ShouldCaptureKeyEvent(DomCode dom_code) const;
// Forwards the key event using |key_event_callback_|.
// |event| is owned by the calling method and will live until this method
// returns.
void ForwardCapturedKeyEvent(KeyEvent* event);
const base::Optional<base::flat_set<DomCode>>& dom_codes() {
return dom_codes_;
}
private:
// Used to forward key events.
KeyEventCallback key_event_callback_;
// The set of keys which should be intercepted by the keyboard hook.
base::Optional<base::flat_set<DomCode>> dom_codes_;
DISALLOW_COPY_AND_ASSIGN(KeyboardHookBase);
};
} // namespace ui
#endif // UI_EVENTS_KEYBOARD_HOOK_BASE_H_