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      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 ASH_IME_CONTROL_DELEGATE_H_
      6 #define ASH_IME_CONTROL_DELEGATE_H_
      7 
      8 namespace ui {
      9 class Accelerator;
     10 }  // namespace ui
     11 
     12 namespace ash {
     13 
     14 // Delegate for controlling IME (input method editor).
     15 class ImeControlDelegate {
     16  public:
     17   virtual ~ImeControlDelegate() {}
     18 
     19   // Changes the IME to what is listed next. This function do nothing if there
     20   // is only one IME is enabled.
     21   virtual void HandleNextIme() = 0;
     22 
     23   // Changes the IME to previously selected one. If there is no previously
     24   // selected IMEs, chooses the next listed IME. This function returns false if
     25   // there is only one IME is enabled.
     26   virtual bool HandlePreviousIme(const ui::Accelerator& accelerator) = 0;
     27 
     28   // Switches to another IME depending on the |accelerator|.
     29   virtual bool HandleSwitchIme(const ui::Accelerator& accelerator) = 0;
     30 
     31   // Checks for special language anomalies and re-map the |accelerator|
     32   // accordingly.
     33   virtual ui::Accelerator RemapAccelerator(
     34       const ui::Accelerator& accelerator) = 0;
     35 };
     36 
     37 }  // namespace ash
     38 
     39 #endif  // ASH_IME_CONTROL_DELEGATE_H_
     40