| // Copyright 2017 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 ASH_LOGIN_UI_HOVER_NOTIFIER_H_ |
| #define ASH_LOGIN_UI_HOVER_NOTIFIER_H_ |
| |
| #include <string> |
| |
| #include "base/callback.h" |
| #include "ui/events/event_handler.h" |
| |
| namespace views { |
| class View; |
| } |
| |
| namespace ash { |
| |
| // Runs a callback whenever a view has gained or lost mouse hover. |
| // TODO(jdufault): see if we can replace this class with views::MouseWatcher. |
| class HoverNotifier : public ui::EventHandler { |
| public: |
| using OnHover = base::RepeatingCallback<void(bool has_hover)>; |
| |
| HoverNotifier(views::View* target_view, const OnHover& on_hover); |
| ~HoverNotifier() override; |
| |
| // ui::EventHandler: |
| void OnEvent(ui::Event* event) override; |
| |
| private: |
| bool had_hover_ = false; |
| views::View* target_view_ = nullptr; |
| OnHover on_hover_; |
| |
| DISALLOW_COPY_AND_ASSIGN(HoverNotifier); |
| }; |
| |
| } // namespace ash |
| |
| #endif // ASH_LOGIN_UI_HOVER_NOTIFIER_H_ |