| // Copyright 2014 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_VIEWS_EVENT_MONITOR_H_ |
| #define UI_VIEWS_EVENT_MONITOR_H_ |
| |
| #include <memory> |
| |
| #include "ui/gfx/geometry/point.h" |
| #include "ui/gfx/native_widget_types.h" |
| #include "ui/views/views_export.h" |
| |
| namespace ui { |
| class EventHandler; |
| } |
| |
| namespace views { |
| |
| // RAII-style class that forwards events to |event_handler| before they are |
| // dispatched. |
| class VIEWS_EXPORT EventMonitor { |
| public: |
| virtual ~EventMonitor() {} |
| |
| // Create an instance for monitoring application events. |
| // Events will be forwarded to |event_handler| before they are dispatched to |
| // the application. |context| is used to determine where to observer events |
| // from. |context| may be destroyed before the EventMonitor. |
| static std::unique_ptr<EventMonitor> CreateApplicationMonitor( |
| ui::EventHandler* event_handler, |
| gfx::NativeWindow context); |
| |
| // Create an instance for monitoring events on a specific window. |
| // Events will be forwarded to |event_handler| before they are dispatched to |
| // |target_window|. |
| // The EventMonitor instance must be destroyed before |target_window|. |
| static std::unique_ptr<EventMonitor> CreateWindowMonitor( |
| ui::EventHandler* event_handler, |
| gfx::NativeWindow target_window); |
| |
| // Returns the last mouse location seen in a mouse event in screen |
| // coordinates. |
| virtual gfx::Point GetLastMouseLocation() = 0; |
| }; |
| |
| } // namespace views |
| |
| #endif // UI_VIEWS_EVENT_MONITOR_H_ |