1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef UI_EVENTS_OZONE_EVENTS_OZONE_H_ 6 #define UI_EVENTS_OZONE_EVENTS_OZONE_H_ 7 8 #include "base/callback.h" 9 #include "base/event_types.h" 10 #include "ui/events/events_export.h" 11 12 namespace ui { 13 14 class Event; 15 16 // Wrap a "native" ui::Event in another ui::Event & dispatch it. 17 // 18 // This is really unfortunate, but exists for two reasons: 19 // 20 // 1. Some of the ui::Event constructors depend on global state that 21 // is only used when building from a "native" event. For example: 22 // last_click_event_ is used when constructing MouseEvent from 23 // NativeEvent to determine click count. 24 // 25 // 2. Events contain a reference to a "native event", which some code 26 // depends on. The ui::Event might get mutated during dispatch, but 27 // the native event won't. Some code depends on the fact that the 28 // "native" version of the event is unmodified. 29 // 30 // We are trying to fix both of these issues, but in the meantime we 31 // define NativeEvent == ui::Event. 32 // 33 EVENTS_EXPORT void DispatchEventFromNativeUiEvent( 34 const base::NativeEvent& native_event, 35 base::Callback<void(ui::Event*)> callback); 36 37 } // namespace ui 38 39 #endif // UI_EVENTS_OZONE_EVENTS_OZONE_H_ 40
