Revert of Moves code from chromeos/ime to ui/base/ime/chromeos.

chromeos/ime/ime_keyboard.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 CHROMEOS_IME_IME_KEYBOARD_H_
+#define CHROMEOS_IME_IME_KEYBOARD_H_
+
+#include <string>
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/observer_list.h"
+#include "chromeos/chromeos_export.h"
+
+namespace chromeos {
+namespace input_method {
+
+struct AutoRepeatRate {
+  AutoRepeatRate() : initial_delay_in_ms(0), repeat_interval_in_ms(0) {}
+  unsigned int initial_delay_in_ms;
+  unsigned int repeat_interval_in_ms;
+};
+
+enum ModifierKey {
+  kSearchKey = 0,  // Customizable.
+  kControlKey,  // Customizable.
+  kAltKey,  // Customizable.
+  kVoidKey,
+  kCapsLockKey,
+  kEscapeKey,
+  // IMPORTANT: You should update kCustomizableKeys[] in .cc file, if you
+  // add a customizable key.
+  kNumModifierKeys,
+};
+
+class InputMethodUtil;
+
+class CHROMEOS_EXPORT ImeKeyboard {
+ public:
+  class Observer {
+   public:
+    // Called when the caps lock state has changed.
+    virtual void OnCapsLockChanged(bool enabled) = 0;
+  };
+
+  ImeKeyboard();
+  virtual ~ImeKeyboard();
+  // Adds/removes observer.
+  virtual void AddObserver(Observer* observer);
+  virtual void RemoveObserver(Observer* observer);
+
+  // Sets the current keyboard layout to |layout_name|. This function does not
+  // change the current mapping of the modifier keys. Returns true on success.
+  virtual bool SetCurrentKeyboardLayoutByName(
+      const std::string& layout_name) = 0;
+
+  // Sets the current keyboard layout again. We have to call the function every
+  // time when "XI_HierarchyChanged" XInput2 event is sent to Chrome. See
+  // xinput_hierarchy_changed_event_listener.h for details.
+  virtual bool ReapplyCurrentKeyboardLayout() = 0;
+
+  // Updates keyboard LEDs on all keyboards.
+  // XKB asymmetrically propagates keyboard modifier indicator state changes to
+  // slave keyboards. If the state change is initiated from a client to the
+  // "core/master keyboard", XKB changes global state and pushes an indication
+  // change down to all keyboards. If the state change is initiated by one slave
+  // (physical) keyboard, it changes global state but only pushes an indicator
+  // state change down to that one keyboard.
+  // This function changes LEDs on all keyboards by explicitly updating the
+  // core/master keyboard.
+  virtual void ReapplyCurrentModifierLockStatus() = 0;
+
+  // Disables the num lock.
+  virtual void DisableNumLock() = 0;
+
+  // Sets the caps lock status to |enable_caps_lock|. Do not call the function
+  // from non-UI threads.
+  virtual void SetCapsLockEnabled(bool enable_caps_lock);
+
+  // Returns true if caps lock is enabled. Do not call the function from non-UI
+  // threads.
+  virtual bool CapsLockIsEnabled();
+
+  // Returns true if the current layout supports ISO Level 5 shift.
+  virtual bool IsISOLevel5ShiftAvailable() const;
+
+  // Returns true if the current layout supports alt gr.
+  virtual bool IsAltGrAvailable() const;
+
+  // Turns on and off the auto-repeat of the keyboard. Returns true on success.
+  // Do not call the function from non-UI threads.
+  virtual bool SetAutoRepeatEnabled(bool enabled) = 0;
+
+  // Sets the auto-repeat rate of the keyboard, initial delay in ms, and repeat
+  // interval in ms.  Returns true on success. Do not call the function from
+  // non-UI threads.
+  virtual bool SetAutoRepeatRate(const AutoRepeatRate& rate) = 0;
+
+  // Returns true if auto repeat is enabled. This function is protected: for
+  // testability.
+  static CHROMEOS_EXPORT bool GetAutoRepeatEnabledForTesting();
+
+  // On success, set current auto repeat rate on |out_rate| and returns true.
+  // Returns false otherwise. This function is protected: for testability.
+  static CHROMEOS_EXPORT bool GetAutoRepeatRateForTesting(
+      AutoRepeatRate* out_rate);
+
+  // Returns false if |layout_name| contains a bad character.
+  static CHROMEOS_EXPORT bool CheckLayoutNameForTesting(
+      const std::string& layout_name);
+
+  // Note: At this moment, classes other than InputMethodManager should not
+  // instantiate the ImeKeyboard class.
+  static ImeKeyboard* Create();
+
+  bool caps_lock_is_enabled_;
+  std::string last_layout_;
+
+ private:
+  ObserverList<Observer> observers_;
+};
+
+}  // namespace input_method
+}  // namespace chromeos
+
+#endif  // CHROMEOS_IME_IME_KEYBOARD_H_