ui/views/ime/null_input_method.h

   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   void SetDelegate(internal::InputMethodDelegate* delegate) override;
  26   void Init(Widget* widget) override;
  27   void OnFocus() override;
  28   void OnBlur() override;
  29   bool OnUntranslatedIMEMessage(const base::NativeEvent& event,
  30                                 NativeEventResult* result) override;
  31   void DispatchKeyEvent(const ui::KeyEvent& key) override;
  32   void OnTextInputTypeChanged(View* view) override;
  33   void OnCaretBoundsChanged(View* view) override;
  34   void CancelComposition(View* view) override;
  35   void OnInputLocaleChanged() override;
  36   std::string GetInputLocale() override;
  37   bool IsActive() override;
  38   ui::TextInputClient* GetTextInputClient() const override;
  39   ui::TextInputType GetTextInputType() const override;
  40   bool IsCandidatePopupOpen() const override;
  41   void ShowImeIfNeeded() override;
  42   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_