public override bool OnHandleEvent(EventArgs e)
{
// handle key down events
if (e is ConsoleKeyDownEventArgs keyDown)
{
switch (keyDown.KeyChar)
{
#region -- Return --
case '\r':
var command = Command;
if (currentLineIndex >= lines.Count - 1 && manager.CanExecute(command))
{
executeCommandOnKeyUp = command;
}
else
{
InsertNewLine();
Invalidate();
}
return(true);
#endregion
#region -- Escape --
case '\x1B':
if (lastInputCommand != null)
{
ResetLastInputCommand();
Invalidate();
}
else if (currentLineIndex > 0 || currentLineOffset > 0)
{
currentLineIndex = 0;
currentLineOffset = 0;
Invalidate();
}
else if (CurrentLine.ContentLength > 0 && lines.Count > 0)
{
Command = String.Empty;
Invalidate();
}
return(true);
#endregion
#region -- Backspace --
case '\b':
CurrentLine.FixLineEnd(ref currentLineOffset);
if (currentLineOffset > 0)
{
ClearLastInputCommand();
currentLineOffset--;
if (CurrentLine.Remove(currentLineOffset))
{
Invalidate();
}
}
else if (currentLineIndex > 0)
{
ClearLastInputCommand();
if (currentLineIndex >= lines.Count)
{
currentLineIndex = lines.Count - 1;
}
var prevLine = lines[currentLineIndex - 1];
var currLine = CurrentLine;
currentLineOffset = prevLine.ContentLength;
if (currLine.ContentLength > 0) // copy content
{
prevLine.InsertLine(currentLineOffset, currLine.content);
}
lines.RemoveAt(currentLineIndex);
currentLineIndex--;
Invalidate();
}
return(true);
#endregion
#region -- Tab --
case '\t':
for (var i = 0; i < 4; i++)
{
if (CurrentLine.Insert(ref currentLineOffset, ' ', overwrite))
{
ClearLastInputCommand();
currentLineOffset++;
Invalidate();
}
}
return(true);
#endregion
default:
if (!Char.IsControl(keyDown.KeyChar))
{
#region -- Char --
if (CurrentLine.Insert(ref currentLineOffset, keyDown.KeyChar, overwrite))
{
ClearLastInputCommand();
currentLineOffset++;
Invalidate();
}
#endregion
return(true);
}
else
{
switch (keyDown.Key)
{
#region -- Delete --
case ConsoleKey.Delete:
if (currentLineOffset >= CurrentLine.ContentLength)
{
ClearLastInputCommand();
if (currentLineIndex < lines.Count - 1)
{
CurrentLine.InsertLine(currentLineOffset, lines[currentLineIndex + 1].content);
lines.RemoveAt(currentLineIndex + 1);
Invalidate();
}
}
else if (CurrentLine.Remove(currentLineOffset))
{
ClearLastInputCommand();
Invalidate();
}
return(true);
#endregion
#region -- Up,Down,Left,Right --
case ConsoleKey.UpArrow:
if (currentLineIndex > 0)
{
if (currentLineIndex >= lines.Count)
{
if (lines.Count > 1)
{
currentLineIndex = lines.Count - 2;
}
else
{
currentLineIndex = 0;
}
}
else
{
currentLineIndex--;
}
Invalidate();
}
InvalidateCursor();
return(true);
case ConsoleKey.DownArrow:
if (currentLineIndex < lines.Count - 1)
{
currentLineIndex++;
Invalidate();
}
else if (currentLineIndex >= lines.Count)
{
currentLineIndex = lines.Count - 1;
}
InvalidateCursor();
return(true);
case ConsoleKey.LeftArrow:
if ((keyDown.KeyModifiers & ConsoleKeyModifiers.CtrlPressed) != 0)
{
MoveCursorByToken(CurrentLine.Content, true);
InvalidateCursor();
return(true);
}
else if (currentLineOffset > 0)
{
if (currentLineOffset < CurrentLine.ContentLength)
{
currentLineOffset--;
}
else
{
currentLineOffset = CurrentLine.ContentLength - 1;
}
}
else
{
currentLineOffset = 0;
}
Invalidate();
InvalidateCursor();
return(true);
case ConsoleKey.RightArrow:
if ((keyDown.KeyModifiers & ConsoleKeyModifiers.CtrlPressed) != 0)
{
MoveCursorByToken(CurrentLine.Content, false);
InvalidateCursor();
return(true);
}
else if (currentLineOffset < CurrentLine.ContentLength)
{
currentLineOffset++;
}
else
{
currentLineOffset = CurrentLine.ContentLength;
}
Invalidate();
InvalidateCursor();
return(true);
#endregion
}
}
break;
}
}
else if (e is ConsoleKeyUpEventArgs keyUp)
{
switch (keyUp.Key)
{
#region -- Home,End,Up,Down,PageUp,PageDown --
case ConsoleKey.Enter:
if (executeCommandOnKeyUp != null)
{
ClearLastInputCommand();
if (commandAccepted != null)
{
commandAccepted.SetResult(executeCommandOnKeyUp);
}
executeCommandOnKeyUp = null;
}
break;
case ConsoleKey.PageUp:
MoveHistory(false);
return(true);
case ConsoleKey.UpArrow:
{
if ((keyUp.KeyModifiers & ConsoleKeyModifiers.AltPressed) != 0)
{
MoveHistory(false);
return(true);
}
}
break;
case ConsoleKey.PageDown:
MoveHistory(true);
return(true);
case ConsoleKey.DownArrow:
{
if (manager is IConsoleReadLineHistory history && (keyUp.KeyModifiers & ConsoleKeyModifiers.AltPressed) != 0)
{
MoveHistory(true);
return(true);
}
}
break;
case ConsoleKey.End:
if ((keyUp.KeyModifiers & ConsoleKeyModifiers.CtrlPressed) != 0)
{
currentLineIndex = lines.Count - 1;
}
currentLineOffset = CurrentLine.ContentLength;
Invalidate();
return(true);
case ConsoleKey.Home:
if ((keyUp.KeyModifiers & ConsoleKeyModifiers.CtrlPressed) != 0)
{
currentLineIndex = 0;
}
currentLineOffset = 0;
Invalidate();
return(true);
#endregion
#region -- Insert --
case ConsoleKey.Insert:
overwrite = !overwrite;
Invalidate();
return(true);
case ConsoleKey.V:
if ((keyUp.KeyModifiers & ConsoleKeyModifiers.CtrlPressed) != 0)
{
var clipText = GetClipboardText();
var first = true;
foreach (var(startAt, len) in Procs.SplitNewLinesTokens(clipText))
{
if (first)
{
first = false;
}
else // new line
{
InsertNewLine();
}
CurrentLine.InsertLine(ref currentLineOffset, clipText, startAt, len);
Invalidate();
}
return(true);
}
break;
#endregion
default:
{
//if (manager is IConsoleReadLineHistory history && (keyUp.KeyModifiers & ConsoleKeyModifiers.CtrlPressed) != 0 && keyUp.Key == ConsoleKey.R)
// ;
}
break;
}
}
return(base.OnHandleEvent(e));
} // proc OnHandleEvent