MacViews: Implement a ui::InputMethod for Mac

ui/base/ime/input_method_mac.h

-// Copyright 2013 The Chromium Authors. All rights reserved.
+// Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef UI_BASE_IME_INPUT_METHOD_MINIMAL_H_
-#define UI_BASE_IME_INPUT_METHOD_MINIMAL_H_
+#ifndef UI_BASE_IME_INPUT_METHOD_MAC_H_
+#define UI_BASE_IME_INPUT_METHOD_MAC_H_
 
 #include "ui/base/ime/input_method_base.h"
 
 namespace ui {
 
-// A minimal implementation of ui::InputMethod, which supports only the direct
-// input without any compositions or conversions.
-class UI_BASE_EXPORT InputMethodMinimal : public InputMethodBase {
+// A ui::InputMethod implementation for Mac.
+// On the Mac, key events don't pass through InputMethod.
+// Instead, NSTextInputClient calls are bridged to the currently focused
+// ui::TextInputClient object.
+class UI_BASE_EXPORT InputMethodMac : public InputMethodBase {
  public:
-  explicit InputMethodMinimal(internal::InputMethodDelegate* delegate);
-  virtual ~InputMethodMinimal();
+  explicit InputMethodMac(internal::InputMethodDelegate* delegate);
+  virtual ~InputMethodMac();
 
   // Overriden from InputMethod.
   virtual bool OnUntranslatedIMEMessage(const base::NativeEvent& event,
                                         NativeEventResult* result) OVERRIDE;
   virtual bool DispatchKeyEvent(const ui::KeyEvent& event) OVERRIDE;
   virtual void OnCaretBoundsChanged(const TextInputClient* client) OVERRIDE;
   virtual void CancelComposition(const TextInputClient* client) OVERRIDE;
   virtual void OnInputLocaleChanged() OVERRIDE;
   virtual std::string GetInputLocale() OVERRIDE;
   virtual bool IsActive() OVERRIDE;
   virtual bool IsCandidatePopupOpen() const OVERRIDE;
 
  private:
-  DISALLOW_COPY_AND_ASSIGN(InputMethodMinimal);
+  DISALLOW_COPY_AND_ASSIGN(InputMethodMac);
 };
 
 }  // namespace ui
 
-#endif  // UI_BASE_IME_INPUT_METHOD_MINIMAL_H_
+#endif  // UI_BASE_IME_INPUT_METHOD_MAC_H_