Move ui/base/ime/character_composer* to ui/base/ime/chromeos/

ui/base/ime/character_composer.h

-// Copyright (c) 2012 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_CHARACTER_COMPOSER_H_
-#define UI_BASE_IME_CHARACTER_COMPOSER_H_
-
-#include <vector>
-
-#include "base/strings/string_util.h"
-#include "ui/base/ui_export.h"
-
-namespace ui {
-class KeyEvent;
-
-// A class to recognize compose and dead key sequence.
-// Outputs composed character.
-class UI_EXPORT CharacterComposer {
- public:
-  CharacterComposer();
-  ~CharacterComposer();
-
-  void Reset();
-
-  // Filters keypress.
-  // Returns true if the keypress is recognized as a part of composition
-  // sequence.
-  // Fabricated events which don't have the native event, are not supported.
-  bool FilterKeyPress(const ui::KeyEvent& event);
-
-  // Returns a string consisting of composed character.
-  // Empty string is returned when there is no composition result.
-  const string16& composed_character() const { return composed_character_; }
-
-  // Returns the preedit string.
-  const string16& preedit_string() const { return preedit_string_; }
-
- private:
-  friend class CharacterComposerTest;
-
-  // An enum to describe composition mode.
-  enum CompositionMode {
-    // This is the initial state.
-    // Composite a character with dead-keys and compose-key.
-    KEY_SEQUENCE_MODE,
-    // Composite a character with a hexadecimal unicode sequence.
-    HEX_MODE,
-  };
-
-  // Filters keypress using IBus defined value.
-  // Returns true if the keypress is recognized as a part of composition
-  // sequence.
-  // |keyval| must be a GDK_KEY_* constant.
-  // |keycode| must be a X key code.
-  // |flags| must be a combination of ui::EF_* flags.
-  //
-  // composed_character() returns non empty string when there is a character
-  // composed after this method returns true.
-  // preedit_string() returns non empty string when there is a preedit string
-  // after this method returns true.
-  // Return values of preedit_string() is empty after this method returns false.
-  // composed_character() may have some characters which are consumed in this
-  // composing session.
-  //
-  //
-  // TODO(nona): Actually a X KeySym is passed to |keyval|, so we should use
-  // XK_* rather than GDK_KEY_*.
-  bool FilterKeyPressInternal(unsigned int keyval, unsigned int keycode,
-                              int flags);
-
-  // Filters keypress in key sequence mode.
-  bool FilterKeyPressSequenceMode(unsigned int keyval, int flags);
-
-  // Filters keypress in hexadecimal mode.
-  bool FilterKeyPressHexMode(unsigned int keyval, unsigned int keycode,
-                             int flags);
-
-  // Commit a character composed from hexadecimal uncode sequence
-  void CommitHex();
-
-  // Updates preedit string in hexadecimal mode.
-  void UpdatePreeditStringHexMode();
-
-  // Remembers keypresses previously filtered.
-  std::vector<unsigned int> compose_buffer_;
-
-  // A string representing the composed character.
-  string16 composed_character_;
-
-  // Preedit string.
-  string16 preedit_string_;
-
-  // Composition mode which this instance is in.
-  CompositionMode composition_mode_;
-
-  DISALLOW_COPY_AND_ASSIGN(CharacterComposer);
-};
-
-}  // namespace ui
-
-#endif  // UI_BASE_IME_CHARACTER_COMPOSER_H_