| // 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_EVENTS_OZONE_EVENTS_OZONE_H_ |
| #define UI_EVENTS_OZONE_EVENTS_OZONE_H_ |
| |
| #include "base/callback.h" |
| #include "ui/events/events_export.h" |
| #include "ui/events/platform_event.h" |
| |
| namespace ui { |
| |
| class Event; |
| |
| // Wrap a "native" ui::Event in another ui::Event & dispatch it. |
| // |
| // This is really unfortunate, but exists for two reasons: |
| // |
| // 1. Some of the ui::Event constructors depend on global state that |
| // is only used when building from a "native" event. For example: |
| // last_click_event_ is used when constructing MouseEvent from |
| // NativeEvent to determine click count. |
| // |
| // 2. Events contain a reference to a "native event", which some code |
| // depends on. The ui::Event might get mutated during dispatch, but |
| // the native event won't. Some code depends on the fact that the |
| // "native" version of the event is unmodified. |
| // |
| // We are trying to fix both of these issues, but in the meantime we |
| // define NativeEvent == ui::Event. |
| // |
| EVENTS_EXPORT void DispatchEventFromNativeUiEvent( |
| const PlatformEvent& native_event, |
| base::OnceCallback<void(ui::Event*)> callback); |
| |
| } // namespace ui |
| |
| #endif // UI_EVENTS_OZONE_EVENTS_OZONE_H_ |
