src/ui/base/ime/input_method_tsf.h

   1 // Copyright (c) 2013 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_BASE_IME_INPUT_METHOD_TSF_H_
   6 #define UI_BASE_IME_INPUT_METHOD_TSF_H_
   7
   8 #include <windows.h>
   9
  10 #include <string>
  11
  12 #include "base/memory/scoped_ptr.h"
  13 #include "ui/base/ime/input_method_win.h"
  14
  15 namespace ui {
  16
  17 class TSFEventRouter;
  18
  19 // An InputMethod implementation based on Windows TSF API.
  20 class UI_EXPORT InputMethodTSF : public InputMethodWin {
  21  public:
  22   InputMethodTSF(internal::InputMethodDelegate* delegate,
  23                  HWND toplevel_window_handle);
  24   virtual ~InputMethodTSF();
  25
  26   // Overridden from InputMethod:
  27   virtual void OnFocus() OVERRIDE;
  28   virtual void OnBlur() OVERRIDE;
  29   virtual bool OnUntranslatedIMEMessage(const base::NativeEvent& event,
  30                                         NativeEventResult* result) OVERRIDE;
  31   virtual void OnTextInputTypeChanged(const TextInputClient* client) OVERRIDE;
  32   virtual void OnCaretBoundsChanged(const TextInputClient* client) OVERRIDE;
  33   virtual void CancelComposition(const TextInputClient* client) OVERRIDE;
  34   virtual void DetachTextInputClient(TextInputClient* client) OVERRIDE;
  35   virtual bool IsCandidatePopupOpen() const OVERRIDE;
  36
  37   // Overridden from InputMethodBase:
  38   virtual void OnWillChangeFocusedClient(TextInputClient* focused_before,
  39                                          TextInputClient* focused) OVERRIDE;
  40   virtual void OnDidChangeFocusedClient(TextInputClient* focused_before,
  41                                         TextInputClient* focused) OVERRIDE;
  42
  43  private:
  44   class TSFEventObserver;
  45
  46   // Asks the client to confirm current composition text.
  47   void ConfirmCompositionText();
  48
  49   // TSF event router and observer.
  50   scoped_ptr<TSFEventObserver> tsf_event_observer_;
  51   scoped_ptr<TSFEventRouter> tsf_event_router_;
  52
  53   DISALLOW_COPY_AND_ASSIGN(InputMethodTSF);
  54 };
  55
  56 }  // namespace ui
  57
  58 #endif  // UI_BASE_IME_INPUT_METHOD_TSF_H_