Separate ime_keyboard_x11.h from cc file.

chromeos/ime/ime_keyboard_x11.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.
+
+
+#include "chromeos/ime/ime_keyboard.h"
+
+#include <cstdlib>
+#include <cstring>
+#include <queue>
+#include <set>
+#include <utility>
+
+#include "base/bind.h"
+#include "base/logging.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/message_loop/message_loop.h"
+#include "base/process/kill.h"
+#include "base/process/launch.h"
+#include "base/process/process_handle.h"
+#include "base/strings/string_util.h"
+#include "base/strings/stringprintf.h"
+#include "base/sys_info.h"
+#include "base/threading/thread_checker.h"
+#include "ui/gfx/x/x11_types.h"
+
+// These includes conflict with base/tracked_objects.h so must come last.
+#include <X11/XKBlib.h>
+#include <X11/Xlib.h>
+
+
+namespace chromeos {
+namespace input_method {
+namespace {
+
+class ImeKeyboardX11 : public ImeKeyboard {
+ public:
+  ImeKeyboardX11();
+  virtual ~ImeKeyboardX11();
+
+  // Adds/removes observer.
+  virtual void AddObserver(Observer* observer) override;
+  virtual void RemoveObserver(Observer* observer) override;
+
+  // ImeKeyboard:
+  virtual bool SetCurrentKeyboardLayoutByName(
+      const std::string& layout_name) override;
+  virtual bool ReapplyCurrentKeyboardLayout() override;
+  virtual void ReapplyCurrentModifierLockStatus() override;
+  virtual void DisableNumLock() override;
+  virtual void SetCapsLockEnabled(bool enable_caps_lock) override;
+  virtual bool CapsLockIsEnabled() override;
+  virtual bool IsISOLevel5ShiftAvailable() const override;
+  virtual bool IsAltGrAvailable() const override;
+  virtual bool SetAutoRepeatEnabled(bool enabled) override;
+  virtual bool SetAutoRepeatRate(const AutoRepeatRate& rate) override;
+
+ private:
+  // Returns a mask for Num Lock (e.g. 1U << 4). Returns 0 on error.
+  unsigned int GetNumLockMask();
+
+  // Sets the caps-lock status. Note that calling this function always disables
+  // the num-lock.
+  void SetLockedModifiers(bool caps_lock_enabled);
+
+  // This function is used by SetLayout() and RemapModifierKeys(). Calls
+  // setxkbmap command if needed, and updates the last_full_layout_name_ cache.
+  bool SetLayoutInternal(const std::string& layout_name, bool force);
+
+  // Executes 'setxkbmap -layout ...' command asynchronously using a layout name
+  // in the |execute_queue_|. Do nothing if the queue is empty.
+  // TODO(yusukes): Use libxkbfile.so instead of the command (crosbug.com/13105)
+  void MaybeExecuteSetLayoutCommand();
+
+  // Polls to see setxkbmap process exits.
+  void PollUntilChildFinish(const base::ProcessHandle handle);
+
+  // Called when execve'd setxkbmap process exits.
+  void OnSetLayoutFinish();
+
+  const bool is_running_on_chrome_os_;
+  unsigned int num_lock_mask_;
+
+  // The current Caps Lock status. If true, enabled.
+  bool current_caps_lock_status_;
+
+  // The XKB layout name which we set last time like "us" and "us(dvorak)".
+  std::string current_layout_name_;
+
+  // A queue for executing setxkbmap one by one.
+  std::queue<std::string> execute_queue_;
+
+  base::ThreadChecker thread_checker_;
+
+  base::WeakPtrFactory<ImeKeyboardX11> weak_factory_;
+
+  ObserverList<Observer> observers_;
+
+  DISALLOW_COPY_AND_ASSIGN(ImeKeyboardX11);
+};
+
+
+}  // namespace
+
+} // namespace input_method
+} // namespace chromeos
+