ash/ime_control_delegate.h

   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   // Returns whether a user can cycle through IMEs. Returns false if only one
  20   // IME is enabled.
  21   virtual bool CanCycleIme() = 0;
  22
  23   // Changes the IME to what is listed next.
  24   virtual void HandleNextIme() = 0;
  25
  26   // Changes the IME to previously selected one. If there is no previously
  27   // selected IMEs, chooses the next listed IME.
  28   virtual void HandlePreviousIme() = 0;
  29
  30   // Returns true if the IME can be switched to the IME associated with
  31   // |accelerator|.
  32   virtual bool CanSwitchIme(const ui::Accelerator& accelerator) = 0;
  33
  34   // Switches to the IME associated with |accelerator|.
  35   virtual void HandleSwitchIme(const ui::Accelerator& accelerator) = 0;
  36
  37   // Checks for special language anomalies and re-map the |accelerator|
  38   // accordingly.
  39   virtual ui::Accelerator RemapAccelerator(
  40       const ui::Accelerator& accelerator) = 0;
  41 };
  42
  43 }  // namespace ash
  44
  45 #endif  // ASH_IME_CONTROL_DELEGATE_H_