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_TEXT_SERVICE_DELEGATE_H_ 6 #define WIN8_METRO_DRIVER_IME_TEXT_SERVICE_DELEGATE_H_ 7 8 #include <vector> 9 10 #include "base/basictypes.h" 11 #include "base/strings/string16.h" 12 13 namespace metro_viewer { 14 struct UnderlineInfo; 15 } 16 17 namespace metro_driver { 18 19 // A delegate which works together with virtual text service. 20 // Objects that implement this delegate will receive notifications from a 21 // virtual text service whenever an IME updates the composition or commits text. 22 class TextServiceDelegate { 23 public: ~TextServiceDelegate()24 virtual ~TextServiceDelegate() {} 25 26 // Called when on-going composition is updated. An empty |text| represents 27 // that the composition is canceled. 28 virtual void OnCompositionChanged( 29 const base::string16& text, 30 int32 selection_start, 31 int32 selection_end, 32 const std::vector<metro_viewer::UnderlineInfo>& underlines) = 0; 33 34 // Called when |text| is committed. 35 virtual void OnTextCommitted(const base::string16& text) = 0; 36 }; 37 38 } // namespace metro_driver 39 40 #endif // WIN8_METRO_DRIVER_IME_TEXT_SERVICE_DELEGATE_H_ 41