private void flushOutputBuffer()
{
// save the line currently pointed to by cursor,
// remove it from Console and write it back after the output buffer flush.
// this is done in order to avoid deletion of user input from console,
// in case user was in the middle of typing.
// it is assumed that user input spans at most one line in console.
bool restoreInputToConsoleFlag = false;
// cursor doesn't point to beginning of line, user might be in the middle of typing
if (!ConsoleIOUtils.IsCursorPointingToBeginningOfLine())
{
// clear the current console line (holding user input)
ConsoleGraphicsHandler.ClearConsoleInputLine();
// restore user input after flush
restoreInputToConsoleFlag = true;
}
// write all entries in output buffer to Console
// in insert order.
while (outputBuffer.Count > 0)
{
string outPutEntry = outputBuffer.Dequeue();
WriteOutput(outPutEntry);
}
// restore input
if (restoreInputToConsoleFlag)
{
writeInputToConsole();
}
}
/// <summary>
/// handles left arrow key user key press.
/// </summary>
private static void handleInputLeftArrowKey()
{
// if not at beginning of line, move cursor one character backwards
if (!ConsoleIOUtils.IsCursorPointingToBeginningOfLine())
{
ConsoleIOUtils.MoveCursorHorizontal(-1);
}
}