private OnScreenKeyboardWatcherRaiseEvents SetDisplayMode(DisplayMode displayMode)
{
// обработка первой установки
var setDisplayMode = displayMode.ToPublicDisplayMode();
if (_displayMode == OnScreenKeyboardDisplayMode.None)
{
_displayMode = setDisplayMode;
return(OnScreenKeyboardWatcherRaiseEvents.None);
}
if (_displayMode == setDisplayMode)
{
// ничего не изменилось
return(OnScreenKeyboardWatcherRaiseEvents.None);
}
var ret = OnScreenKeyboardWatcherRaiseEvents.DisplayModeChanged;
var oldStateVisible = (_displayMode == OnScreenKeyboardDisplayMode.Floating) || (_displayMode == OnScreenKeyboardDisplayMode.Docked);
var newStateVisible = (setDisplayMode == OnScreenKeyboardDisplayMode.Floating) || (setDisplayMode == OnScreenKeyboardDisplayMode.Docked);
if (oldStateVisible ^ newStateVisible)
{
// поменялась видимость
if (newStateVisible)
{
ret |= OnScreenKeyboardWatcherRaiseEvents.KeyboardOpened;
}
else
{
ret |= OnScreenKeyboardWatcherRaiseEvents.KeyboardClosed;
}
}
if (newStateVisible)
{
if (!_openedSince.HasValue)
{
_openedSince = DateTime.Now;
}
}
else
{
_openedSince = null;
}
_displayMode = setDisplayMode;
return(ret);
}