chrome/test/webdriver/keycode_text_conversion_win.cc

// Copyright (c) 2011 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 "chrome/test/webdriver/keycode_text_conversion.h"

#include <windows.h>

#include <cctype>

#include "base/strings/utf_string_conversions.h"
#include "chrome/common/automation_constants.h"

namespace webdriver {

std::string ConvertKeyCodeToText(ui::KeyboardCode key_code, int modifiers) {
  UINT scan_code = ::MapVirtualKeyW(key_code, MAPVK_VK_TO_VSC);
  BYTE keyboard_state[256];
  memset(keyboard_state, 0, 256);
  if (modifiers & automation::kShiftKeyMask)
    keyboard_state[VK_SHIFT] |= 0x80;
  if (modifiers & automation::kControlKeyMask)
    keyboard_state[VK_CONTROL] |= 0x80;
  if (modifiers & automation::kAltKeyMask)
    keyboard_state[VK_MENU] |= 0x80;
  wchar_t chars[5];
  int code = ::ToUnicode(key_code, scan_code, keyboard_state, chars, 4, 0);
  // |ToUnicode| converts some non-text key codes like F1 to various ASCII
  // control chars. Filter those out.
  if (code <= 0 || (code == 1 && std::iscntrl(chars[0]))) {
    return "";
  } else {
    std::string text;
    WideToUTF8(chars, code, &text);
    return text;
  }
}

bool ConvertCharToKeyCode(
    char16 key, ui::KeyboardCode* key_code, int *necessary_modifiers) {
  short vkey_and_modifiers = ::VkKeyScanW(key);
  bool translated = vkey_and_modifiers != -1 &&
                    LOBYTE(vkey_and_modifiers) != -1 &&
                    HIBYTE(vkey_and_modifiers) != -1;
  if (translated) {
    *key_code = static_cast<ui::KeyboardCode>(LOBYTE(vkey_and_modifiers));
    *necessary_modifiers = HIBYTE(vkey_and_modifiers);
  }
  return translated;
}

}  // namespace webdriver