chromium/chrome/browser/ui/views/omnibox/omnibox_mouse_enter_exit_handler.h

// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CHROME_BROWSER_UI_VIEWS_OMNIBOX_OMNIBOX_MOUSE_ENTER_EXIT_HANDLER_H_
#define CHROME_BROWSER_UI_VIEWS_OMNIBOX_OMNIBOX_MOUSE_ENTER_EXIT_HANDLER_H_

#include <vector>

#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "ui/events/event_handler.h"

namespace views {
class View;
}  // namespace views

// Omnibox suggestion rows (and header rows) rely on mouse-enter and mouse-exit
// events to update their hover state (whether or not they are highlighted).
// But child Views sometimes interfere with receiving these events when the
// mouse is moved quickly, which causes rows to remain erroneously highlighted.
// This class solves that problem by bridging the child Views mouse event
// handler to a callback. This class instance must outlive all observed Views.
class OmniboxMouseEnterExitHandler : public ui::EventHandler { … };

#endif  // CHROME_BROWSER_UI_VIEWS_OMNIBOX_OMNIBOX_MOUSE_ENTER_EXIT_HANDLER_H_