1 // Copyright (c) 2012 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_WM_CORE_INPUT_METHOD_EVENT_FILTER_H_ 6 #define UI_WM_CORE_INPUT_METHOD_EVENT_FILTER_H_ 7 8 #include "base/compiler_specific.h" 9 #include "base/macros.h" 10 #include "base/memory/scoped_ptr.h" 11 #include "ui/base/ime/input_method_delegate.h" 12 #include "ui/events/event_handler.h" 13 #include "ui/gfx/native_widget_types.h" 14 #include "ui/wm/wm_export.h" 15 16 namespace ui { 17 class EventProcessor; 18 class InputMethod; 19 } 20 21 namespace wm { 22 23 // An event filter that forwards a KeyEvent to a system IME, and dispatches a 24 // TranslatedKeyEvent to the root window as needed. 25 class WM_EXPORT InputMethodEventFilter 26 : public ui::EventHandler, 27 public ui::internal::InputMethodDelegate { 28 public: 29 explicit InputMethodEventFilter(gfx::AcceleratedWidget widget); 30 virtual ~InputMethodEventFilter(); 31 32 void SetInputMethodPropertyInRootWindow(aura::Window* root_window); 33 34 ui::InputMethod* input_method() const { return input_method_.get(); } 35 36 private: 37 // Overridden from ui::EventHandler: 38 virtual void OnKeyEvent(ui::KeyEvent* event) OVERRIDE; 39 40 // Overridden from ui::internal::InputMethodDelegate: 41 virtual bool DispatchKeyEventPostIME(const ui::KeyEvent& event) OVERRIDE; 42 43 scoped_ptr<ui::InputMethod> input_method_; 44 45 DISALLOW_COPY_AND_ASSIGN(InputMethodEventFilter); 46 }; 47 48 } // namespace wm 49 50 #endif // UI_WM_CORE_INPUT_METHOD_EVENT_FILTER_H_ 51
