| // Copyright 2016 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_POINTER_WATCHER_ADAPTER_CLASSIC_H_ |
| #define ASH_POINTER_WATCHER_ADAPTER_CLASSIC_H_ |
| |
| #include "ash/ash_export.h" |
| #include "base/macros.h" |
| #include "base/observer_list.h" |
| #include "ui/events/event_handler.h" |
| #include "ui/gfx/native_widget_types.h" |
| |
| namespace gfx { |
| class Point; |
| } |
| |
| namespace ui { |
| class LocatedEvent; |
| class PointerEvent; |
| } // namespace ui |
| |
| namespace views { |
| class PointerWatcher; |
| enum class PointerWatcherEventTypes; |
| } // namespace views |
| |
| namespace ash { |
| |
| // Support for PointerWatchers in non-mus ash, implemented with a pre-target |
| // EventHandler on the Shell. |
| class ASH_EXPORT PointerWatcherAdapterClassic : public ui::EventHandler { |
| public: |
| PointerWatcherAdapterClassic(); |
| ~PointerWatcherAdapterClassic() override; |
| |
| // See ShellPort::AddPointerWatcher() for details. |
| void AddPointerWatcher(views::PointerWatcher* watcher, |
| views::PointerWatcherEventTypes events); |
| void RemovePointerWatcher(views::PointerWatcher* watcher); |
| |
| // ui::EventHandler: |
| void OnMouseEvent(ui::MouseEvent* event) override; |
| void OnTouchEvent(ui::TouchEvent* event) override; |
| |
| private: |
| gfx::Point GetLocationInScreen(const ui::LocatedEvent& event) const; |
| gfx::NativeView GetTargetWindow(const ui::LocatedEvent& event) const; |
| |
| // Calls OnPointerEventObserved() on the appropriate set of watchers as |
| // determined by the type of event. |original_event| is the original |
| // event supplied to OnMouseEvent()/OnTouchEvent(), |pointer_event| is |
| // |original_event| converted to a PointerEvent. |
| void NotifyWatchers(const ui::PointerEvent& pointer_event, |
| const ui::LocatedEvent& original_event); |
| |
| // The true parameter to ObserverList indicates the list must be empty on |
| // destruction. Two sets of observers are maintained, one for observers not |
| // needing moves |non_move_watchers_| and |move_watchers_| for those |
| // observers wanting moves too. |
| base::ObserverList<views::PointerWatcher, true> non_move_watchers_; |
| base::ObserverList<views::PointerWatcher, true> move_watchers_; |
| base::ObserverList<views::PointerWatcher, true> drag_watchers_; |
| |
| DISALLOW_COPY_AND_ASSIGN(PointerWatcherAdapterClassic); |
| }; |
| |
| } // namespace ash |
| |
| #endif // ASH_POINTER_WATCHER_ADAPTER_CLASSIC_H_ |