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// 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_CHROMEOS_IME_KEYBOARD_X11_H_
#define UI_BASE_IME_CHROMEOS_IME_KEYBOARD_X11_H_
#include "ui/base/ime/chromeos/ime_keyboard.h"
#include <cstdlib>
#include <cstring>
#include <queue>
#include <set>
#include <utility>
#include "base/bind.h"
#include "base/logging.h"
#include "base/macros.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/base/ime/ui_base_ime_export.h"
namespace chromeos {
namespace input_method {
class UI_BASE_IME_EXPORT ImeKeyboardX11 : public ImeKeyboard {
public:
ImeKeyboardX11();
~ImeKeyboardX11() override;
// ImeKeyboard:
bool SetCurrentKeyboardLayoutByName(const std::string& layout_name) override;
bool ReapplyCurrentKeyboardLayout() override;
void ReapplyCurrentModifierLockStatus() override;
void DisableNumLock() override;
void SetCapsLockEnabled(bool enable_caps_lock) override;
bool CapsLockIsEnabled() override;
bool SetAutoRepeatEnabled(bool enabled) override;
bool GetAutoRepeatEnabled() override;
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();
// 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_;
// A queue for executing setxkbmap one by one.
std::queue<std::string> execute_queue_;
base::ThreadChecker thread_checker_;
base::WeakPtrFactory<ImeKeyboardX11> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(ImeKeyboardX11);
};
} // namespace input_method
} // namespace chromeos
#endif // UI_BASE_IME_CHROMEOS_IME_KEYBOARD_X11_H_
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