WebKeyboardEventBuilder::WebKeyboardEventBuilder(const KeyboardEvent& event)
{
    if (event.type() == EventTypeNames::keydown)
        type = KeyDown;
    else if (event.type() == EventTypeNames::keyup)
        type = WebInputEvent::KeyUp;
    else if (event.type() == EventTypeNames::keypress)
        type = WebInputEvent::Char;
    else
        return; // Skip all other keyboard events.

    modifiers = event.modifiers();

    timeStampSeconds = event.platformTimeStamp();
    windowsKeyCode = event.keyCode();

    // The platform keyevent does not exist if the event was created using
    // initKeyboardEvent.
    if (!event.keyEvent())
        return;
    nativeKeyCode = event.keyEvent()->nativeVirtualKeyCode();
    domCode = Platform::current()->domEnumFromCodeString(event.keyEvent()->code());
    domKey = Platform::current()->domKeyEnumFromString(event.keyEvent()->key());
    unsigned numberOfCharacters = std::min(event.keyEvent()->text().length(), static_cast<unsigned>(textLengthCap));
    for (unsigned i = 0; i < numberOfCharacters; ++i) {
        text[i] = event.keyEvent()->text()[i];
        unmodifiedText[i] = event.keyEvent()->unmodifiedText()[i];
    }
    memcpy(keyIdentifier, event.keyIdentifier().ascii().data(), event.keyIdentifier().length());
}