/// <summary>
/// Reads the input from the input buffer.
/// </summary>
public ReadRef ReadInput(ReadOptions options)
{
var handle = GetInputBuffer();
uint read = 0;
var readRef = new ReadRef();
StringBuilder inputBuffer = new StringBuilder(options.InitialContent);
int currentLength = 0;
//Save current mode.
uint currentMode = 0;
ConsoleHostNativeMethods.GetConsoleMode(handle.DangerousGetHandle(), out currentMode);
ConsoleModes newMode = (ConsoleModes)currentMode &
~ConsoleModes.WindowInput &
~ConsoleModes.MouseInput &
~ConsoleModes.ProcessedInput;
ConsoleHostNativeMethods.SetConsoleMode(handle.DangerousGetHandle(), (uint)newMode);
while (true)
{
var inputs = DotConsoleNative.ReadConsoleKeys(handle, 1, out read);
if (inputs != null && inputs.Length > 0)
{
if (read == 1)
{
var input = inputs[0];
if (input.KeyEvent.repeatCount == 0)
{
//for some bizzare reson this can return a key or record
//but repeat count is zero so we should not process it in any way.
//This can happen if we're after mouse inputs such as mouse move.
continue;
}
if (input.KeyEvent.keyDown == true)
{
if (input.EventType == (ushort)KeyEventType.KEY_EVENT)
{
if (input.KeyEvent.virtualKeyCode == (ushort)VirtualInputCode.Return)
{
break;
}
if (input.KeyEvent.virtualKeyCode == (ushort)VirtualInputCode.Left)
{
//set cursor position.
//Should we use the cursor position from renderrer ? or perhaps use
//the one from the output buffer of the console that we're using ?
var currentCursorPosition = parent.GetCursorPosition();
currentCursorPosition.X -= 1;
parent.SetCursorPosition(currentCursorPosition);
parent.SetBufferPosition(currentCursorPosition);
}
else if (input.KeyEvent.virtualKeyCode == (ushort)VirtualInputCode.Right)
{
//set cursor position.
//Should we use the cursor position from renderrer ? or perhaps use
//the one from the output buffer of the console that we're using ?
var currentCursorPosition = parent.GetCursorPosition();
currentCursorPosition.X += 1;
parent.SetCursorPosition(currentCursorPosition);
parent.SetBufferPosition(currentCursorPosition);
}
else if (input.KeyEvent.virtualKeyCode == (ushort)VirtualInputCode.Back)
{
var currentCursorPosition = parent.GetCursorPosition();
currentCursorPosition.X -= 1;
inputBuffer.Remove(inputBuffer.Length - 1, 1);
if (options.NoEcho == false)
{
parent.AlterLine(string.Empty, currentCursorPosition.Y, currentCursorPosition.X, 1, options.BackgroundColor, options.ForegroundColor);
}
parent.SetCursorPosition(currentCursorPosition);
parent.SetBufferPosition(currentCursorPosition);
}
else
{
if (options.StopOnUpArrow && input.KeyEvent.virtualKeyCode == (ushort)VirtualInputCode.Up)
{
readRef.IsUpArrow = true;
break;
}
else if (options.StopOnDownArrow && input.KeyEvent.virtualKeyCode == (ushort)VirtualInputCode.Down)
{
readRef.IsDownArrow = true;
break;
}
if (options.StopChars != null)
{
if (options.StopChars.Contains(input.KeyEvent.unicodeChar))
{
readRef.StopChar = (input.KeyEvent.unicodeChar);
break;
}
}
currentLength++;
inputBuffer.Append(input.KeyEvent.unicodeChar);
if (options.NoEcho == false)
{
parent.Write(input.KeyEvent.unicodeChar.ToString(), options.BackgroundColor, options.ForegroundColor, false);
}
//Maximum allowed chars read, break the input loop.
if (options.ReadLength.HasValue && currentLength >= options.ReadLength)
{
break;
}
}
}
}
}
}
}
//Restore saved mode.
ConsoleHostNativeMethods.SetConsoleMode(handle.DangerousGetHandle(), currentMode);
readRef.ReadInput = inputBuffer.ToString();
return(readRef);
}