It is time.

ui/base/ime/input_method_chromeos.h

-// Copyright 2014 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_INPUT_METHOD_CHROMEOS_H_
-#define UI_BASE_IME_INPUT_METHOD_CHROMEOS_H_
-
-#include <set>
-#include <string>
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/weak_ptr.h"
-#include "ui/base/ime/chromeos/character_composer.h"
-#include "ui/base/ime/chromeos/ime_bridge.h"
-#include "ui/base/ime/composition_text.h"
-#include "ui/base/ime/input_method_base.h"
-
-namespace ui {
-
-// A ui::InputMethod implementation based on IBus.
-class UI_BASE_EXPORT InputMethodChromeOS
-    : public InputMethodBase,
-      public chromeos::IMEInputContextHandlerInterface {
- public:
-  explicit InputMethodChromeOS(internal::InputMethodDelegate* delegate);
-  virtual ~InputMethodChromeOS();
-
-  // Overridden from InputMethod:
-  virtual void OnFocus() override;
-  virtual void OnBlur() override;
-  virtual bool OnUntranslatedIMEMessage(const base::NativeEvent& event,
-                                        NativeEventResult* result) override;
-  virtual bool DispatchKeyEvent(const ui::KeyEvent& event) override;
-  virtual void OnTextInputTypeChanged(const TextInputClient* client) override;
-  virtual void OnCaretBoundsChanged(const TextInputClient* client) override;
-  virtual void CancelComposition(const TextInputClient* client) override;
-  virtual void OnInputLocaleChanged() override;
-  virtual std::string GetInputLocale() override;
-  virtual bool IsActive() override;
-  virtual bool IsCandidatePopupOpen() const override;
-
- protected:
-  // Converts |text| into CompositionText.
-  void ExtractCompositionText(const chromeos::CompositionText& text,
-                              uint32 cursor_position,
-                              CompositionText* out_composition) const;
-
-  // Process a key returned from the input method.
-  virtual void ProcessKeyEventPostIME(const ui::KeyEvent& event,
-                                      bool handled);
-
-  // Resets context and abandon all pending results and key events.
-  void ResetContext();
-
- private:
-  class PendingKeyEvent;
-
-  // Overridden from InputMethodBase:
-  virtual void OnWillChangeFocusedClient(TextInputClient* focused_before,
-                                         TextInputClient* focused) override;
-  virtual void OnDidChangeFocusedClient(TextInputClient* focused_before,
-                                        TextInputClient* focused) override;
-
-  // Asks the client to confirm current composition text.
-  void ConfirmCompositionText();
-
-  // Checks the availability of focused text input client and update focus
-  // state.
-  void UpdateContextFocusState();
-
-  // Processes a key event that was already filtered by the input method.
-  // A VKEY_PROCESSKEY may be dispatched to the focused View.
-  void ProcessFilteredKeyPressEvent(const ui::KeyEvent& event);
-
-  // Processes a key event that was not filtered by the input method.
-  void ProcessUnfilteredKeyPressEvent(const ui::KeyEvent& event);
-
-  // Sends input method result caused by the given key event to the focused text
-  // input client.
-  void ProcessInputMethodResult(const ui::KeyEvent& event, bool filtered);
-
-  // Checks if the pending input method result needs inserting into the focused
-  // text input client as a single character.
-  bool NeedInsertChar() const;
-
-  // Checks if there is pending input method result.
-  bool HasInputMethodResult() const;
-
-  // Sends a fake key event for IME composing without physical key events.
-  void SendFakeProcessKeyEvent(bool pressed) const;
-
-  // Abandons all pending key events. It usually happends when we lose keyboard
-  // focus, the text input type is changed or we are destroyed.
-  void AbandonAllPendingKeyEvents();
-
-  // Passes keyevent and executes character composition if necessary. Returns
-  // true if character composer comsumes key event.
-  bool ExecuteCharacterComposer(const ui::KeyEvent& event);
-
-  // chromeos::IMEInputContextHandlerInterface overrides:
-  virtual void CommitText(const std::string& text) override;
-  virtual void UpdateCompositionText(const chromeos::CompositionText& text,
-                                     uint32 cursor_pos,
-                                     bool visible) override;
-  virtual void DeleteSurroundingText(int32 offset, uint32 length) override;
-
-  // Hides the composition text.
-  void HidePreeditText();
-
-  // Callback function for IMEEngineHandlerInterface::ProcessKeyEvent.
-  void ProcessKeyEventDone(uint32 id, ui::KeyEvent* event, bool is_handled);
-
-  // Returns whether an input field is focused. Note that password field is not
-  // considered as an input field.
-  bool IsInputFieldFocused();
-
-  // All pending key events. Note: we do not own these object, we just save
-  // pointers to these object so that we can abandon them when necessary.
-  // They will be deleted in ProcessKeyEventDone().
-  std::set<uint32> pending_key_events_;
-
-  // Pending composition text generated by the current pending key event.
-  // It'll be sent to the focused text input client as soon as we receive the
-  // processing result of the pending key event.
-  CompositionText composition_;
-
-  // Pending result text generated by the current pending key event.
-  // It'll be sent to the focused text input client as soon as we receive the
-  // processing result of the pending key event.
-  base::string16 result_text_;
-
-  base::string16 previous_surrounding_text_;
-  gfx::Range previous_selection_range_;
-
-  // Indicates if there is an ongoing composition text.
-  bool composing_text_;
-
-  // Indicates if the composition text is changed or deleted.
-  bool composition_changed_;
-
-  // The latest id of key event.
-  uint32 current_keyevent_id_;
-
-  // An object to compose a character from a sequence of key presses
-  // including dead key etc.
-  CharacterComposer character_composer_;
-
-  // Used for making callbacks.
-  base::WeakPtrFactory<InputMethodChromeOS> weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(InputMethodChromeOS);
-};
-
-}  // namespace ui
-
-#endif  // UI_BASE_IME_INPUT_METHOD_CHROMEOS_H_