// 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 "ui/base/ime/chromeos/ime_keymap.h"

#include <map>

#include "base/lazy_instance.h"

namespace ui {

namespace {

const struct KeyCodeTable {
  KeyboardCode keyboard_code;
  const char* dom_code;
} kKeyCodeTable[] = {
  {VKEY_BACK, "Backspace"},
  {VKEY_TAB, "Tab"},
  {VKEY_RETURN, "Enter"},
  {VKEY_MENU, "ContextMenu"},
  {VKEY_PAUSE, "Pause"},
  {VKEY_CAPITAL, "CapsLock"},
  {VKEY_KANA, "KanaMode"},
  {VKEY_HANGUL, "HangulMode"},
  {VKEY_HANJA, "Hanja"},
  {VKEY_KANJI, "Kanji"},
  {VKEY_ESCAPE, "Escape"},
  {VKEY_CONVERT, "Convert"},
  {VKEY_NONCONVERT, "NoConvert"},
  {VKEY_SPACE, "Space"},
  {VKEY_END, "End"},
  {VKEY_HOME, "Home"},
  {VKEY_LEFT, "ArrowLeft"},
  {VKEY_UP, "ArrowUp"},
  {VKEY_RIGHT, "ArrowRight"},
  {VKEY_DOWN, "ArrowDown"},
  {VKEY_PRINT, "PrintScreen"},
  {VKEY_INSERT, "Insert"},
  {VKEY_DELETE, "Delete"},
  {VKEY_HELP, "Help"},
  {VKEY_0, "Digit0"},
  {VKEY_1, "Digit1"},
  {VKEY_2, "Digit2"},
  {VKEY_3, "Digit3"},
  {VKEY_4, "Digit4"},
  {VKEY_5, "Digit5"},
  {VKEY_6, "Digit6"},
  {VKEY_7, "Digit7"},
  {VKEY_8, "Digit8"},
  {VKEY_9, "Digit9"},
  {VKEY_A, "KeyA"},
  {VKEY_B, "KeyB"},
  {VKEY_C, "KeyC"},
  {VKEY_D, "KeyD"},
  {VKEY_E, "KeyE"},
  {VKEY_F, "KeyF"},
  {VKEY_G, "KeyG"},
  {VKEY_H, "KeyH"},
  {VKEY_I, "KeyI"},
  {VKEY_J, "KeyJ"},
  {VKEY_K, "KeyK"},
  {VKEY_L, "KeyL"},
  {VKEY_M, "KeyM"},
  {VKEY_N, "KeyN"},
  {VKEY_O, "KeyO"},
  {VKEY_P, "KeyP"},
  {VKEY_Q, "KeyQ"},
  {VKEY_R, "KeyR"},
  {VKEY_S, "KeyS"},
  {VKEY_T, "KeyT"},
  {VKEY_U, "KeyU"},
  {VKEY_V, "KeyV"},
  {VKEY_W, "KeyW"},
  {VKEY_X, "KeyX"},
  {VKEY_Y, "KeyY"},
  {VKEY_Z, "KeyZ"},
  {VKEY_LWIN, "OSLeft"},
  {VKEY_RWIN, "OSRight"},
  {VKEY_NUMPAD0, "Numpad0"},
  {VKEY_NUMPAD1, "Numpad1"},
  {VKEY_NUMPAD2, "Numpad2"},
  {VKEY_NUMPAD3, "Numpad3"},
  {VKEY_NUMPAD4, "Numpad4"},
  {VKEY_NUMPAD5, "Numpad5"},
  {VKEY_NUMPAD6, "Numpad6"},
  {VKEY_NUMPAD7, "Numpad7"},
  {VKEY_NUMPAD8, "Numpad8"},
  {VKEY_NUMPAD9, "Numpad9"},
  {VKEY_MULTIPLY, "NumpadMultiply"},
  {VKEY_ADD, "NumpadAdd"},
  {VKEY_SUBTRACT, "NumpadSubtract"},
  {VKEY_DECIMAL, "NumpadDecimal"},
  {VKEY_DIVIDE, "NumpadDivide"},
  {VKEY_F1, "F1"},
  {VKEY_F2, "F2"},
  {VKEY_F3, "F3"},
  {VKEY_F4, "F4"},
  {VKEY_F5, "F5"},
  {VKEY_F6, "F6"},
  {VKEY_F7, "F7"},
  {VKEY_F8, "F8"},
  {VKEY_F9, "F9"},
  {VKEY_F10, "F10"},
  {VKEY_F11, "F11"},
  {VKEY_F12, "F12"},
  {VKEY_F13, "F13"},
  {VKEY_F14, "F14"},
  {VKEY_F15, "F15"},
  {VKEY_F16, "F16"},
  {VKEY_F17, "F17"},
  {VKEY_F18, "F18"},
  {VKEY_F19, "F19"},
  {VKEY_F20, "F20"},
  {VKEY_F21, "F21"},
  {VKEY_F22, "F22"},
  {VKEY_F23, "F23"},
  {VKEY_F24, "F24"},
  {VKEY_NUMLOCK, "NumLock"},
  {VKEY_SCROLL, "ScrollLock"},
  {VKEY_LSHIFT, "ShiftLeft"},
  {VKEY_RSHIFT, "ShiftRight"},
  {VKEY_LCONTROL, "CtrlLeft"},
  {VKEY_RCONTROL, "CtrlRight"},
  {VKEY_LMENU, "AltLeft"},
  {VKEY_RMENU, "AltRight"},
  {VKEY_BROWSER_BACK, "BrowserBack"},
  {VKEY_BROWSER_FORWARD, "BrowserForward"},
  {VKEY_BROWSER_REFRESH, "BrowserRefresh"},
  {VKEY_BROWSER_STOP, "BrowserStop"},
  {VKEY_BROWSER_SEARCH, "BrowserSearch"},
  {VKEY_BROWSER_HOME, "BrowserHome"},
  {VKEY_VOLUME_MUTE, "VolumeMute"},
  {VKEY_VOLUME_DOWN, "VolumeDown"},
  {VKEY_VOLUME_UP, "VolumeUp"},
  {VKEY_BRIGHTNESS_DOWN, "BrightnessDown"},
  {VKEY_BRIGHTNESS_UP, "BrightnessUp"},
  {VKEY_MEDIA_LAUNCH_APP1, "ChromeOSSwitchWindow"},
  {VKEY_MEDIA_LAUNCH_APP2, "ChromeOSFullscreen"},
  {VKEY_MEDIA_NEXT_TRACK, "MediaTrackNext"},
  {VKEY_MEDIA_PREV_TRACK, "MediaTrackPrevious"},
  {VKEY_MEDIA_STOP, "MediaStop"},
  {VKEY_MEDIA_PLAY_PAUSE, "MediaPlayPause"},
  {VKEY_MEDIA_LAUNCH_MAIL, "LaunchMail"},
  {VKEY_OEM_1, "Semicolon"},
  {VKEY_OEM_PLUS, "Equal"},
  {VKEY_OEM_COMMA, "Comma"},
  {VKEY_OEM_MINUS, "Minus"},
  {VKEY_OEM_PERIOD, "Period"},
  {VKEY_OEM_2, "Slash"},
  {VKEY_OEM_3, "Backquote"},
  {VKEY_OEM_4, "BracketLeft"},
  {VKEY_OEM_5, "Backslash"},
  {VKEY_OEM_6, "BracketRight"},
  {VKEY_OEM_7, "Quote"}};

class KeyCodeMap {
 public:
  KeyCodeMap() {
    for (size_t i = 0; i < arraysize(kKeyCodeTable); ++i) {
      map_dom_key_[kKeyCodeTable[i].dom_code] = kKeyCodeTable[i].keyboard_code;
      map_key_dom_[kKeyCodeTable[i].keyboard_code] = kKeyCodeTable[i].dom_code;
    }
  }

  KeyboardCode GetKeyboardCode(const std::string& dom_code) const {
    std::map<std::string, KeyboardCode>::const_iterator it =
        map_dom_key_.find(dom_code);
    return (it == map_dom_key_.end()) ? VKEY_UNKNOWN : it->second;
  }

  std::string GetDomKeycode(KeyboardCode key_code) const {
    std::map<KeyboardCode, std::string>::const_iterator it =
        map_key_dom_.find(key_code);
    return (it == map_key_dom_.end()) ? "" : it->second;
  }

 private:
  std::map<std::string, KeyboardCode> map_dom_key_;
  std::map<KeyboardCode, std::string> map_key_dom_;
};

base::LazyInstance<KeyCodeMap>::Leaky g_keycode_map =
    LAZY_INSTANCE_INITIALIZER;

}  // namespace

KeyboardCode DomKeycodeToKeyboardCode(const std::string& code) {
  return g_keycode_map.Get().GetKeyboardCode(code);
}

std::string KeyboardCodeToDomKeycode(KeyboardCode code) {
  return g_keycode_map.Get().GetDomKeycode(code);
}

}  // namespace ui