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      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_VIEWS_IME_NULL_INPUT_METHOD_H_
      6 #define UI_VIEWS_IME_NULL_INPUT_METHOD_H_
      7 
      8 #include "base/compiler_specific.h"
      9 #include "base/macros.h"
     10 #include "ui/views/ime/input_method.h"
     11 
     12 namespace views {
     13 
     14 // An implementation of views::InputMethod which does nothing.
     15 //
     16 // We're working on removing views::InputMethod{,Base,Bridge} and going to use
     17 // only ui::InputMethod.  Use this class instead of views::InputMethodBridge
     18 // with ui::TextInputFocusManager to effectively eliminate the
     19 // views::InputMethod layer.
     20 class NullInputMethod : public InputMethod {
     21  public:
     22   NullInputMethod();
     23 
     24   // Overridden from InputMethod:
     25   virtual void SetDelegate(internal::InputMethodDelegate* delegate) OVERRIDE;
     26   virtual void Init(Widget* widget) OVERRIDE;
     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 DispatchKeyEvent(const ui::KeyEvent& key) OVERRIDE;
     32   virtual void OnTextInputTypeChanged(View* view) OVERRIDE;
     33   virtual void OnCaretBoundsChanged(View* view) OVERRIDE;
     34   virtual void CancelComposition(View* view) OVERRIDE;
     35   virtual void OnInputLocaleChanged() OVERRIDE;
     36   virtual std::string GetInputLocale() OVERRIDE;
     37   virtual bool IsActive() OVERRIDE;
     38   virtual ui::TextInputClient* GetTextInputClient() const OVERRIDE;
     39   virtual ui::TextInputType GetTextInputType() const OVERRIDE;
     40   virtual bool IsCandidatePopupOpen() const OVERRIDE;
     41   virtual void ShowImeIfNeeded() OVERRIDE;
     42   virtual bool IsMock() const OVERRIDE;
     43 
     44  private:
     45   DISALLOW_COPY_AND_ASSIGN(NullInputMethod);
     46 };
     47 
     48 }  // namespace views
     49 
     50 #endif  // UI_VIEWS_IME_NULL_INPUT_METHOD_H_
     51