1 // Copyright 2013 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 WIN8_METRO_DRIVER_IME_INPUT_SOURCE_H_ 6 #define WIN8_METRO_DRIVER_IME_INPUT_SOURCE_H_ 7 8 #include <Windows.h> 9 10 #include "base/memory/scoped_ptr.h" 11 12 namespace metro_driver { 13 14 class InputSourceObserver; 15 16 // An interface through which information about the input source can be 17 // retrieved, where an input source represents an IME or a keyboard layout. 18 class InputSource { 19 public: 20 virtual ~InputSource() {} 21 // Create an instance. Returns NULL if fails. 22 static scoped_ptr<InputSource> Create(); 23 24 // Returns true if |langid| and |is_ime| are filled based on the current 25 // active input source. 26 virtual bool GetActiveSource(LANGID* langid, bool* is_ime) = 0; 27 28 // Adds/Removes an observer to receive notifications when the active input 29 // source is changed. 30 virtual void AddObserver(InputSourceObserver* observer) = 0; 31 virtual void RemoveObserver(InputSourceObserver* observer) = 0; 32 }; 33 34 } // namespace metro_driver 35 36 #endif // WIN8_METRO_DRIVER_IME_INPUT_SOURCE_H_ 37
