public void SplitLine(Cursor where)
{
var line = Lines[where.Line];
var rest = line.Data.Substring(where.Column);
line.Data = line.Data.Substring(0, where.Column);
Lines.Insert(where.Line + 1, new Line(rest, line.Ending));
}
public CommandPalette(IConsole context, int x, int y, int w)
{
console = context;
Focused = true;
X = x;
Y = y;
Width = w;
Height = 2;
buffer = new Buffer();
cursor = new Cursor(0, 0);
}
private void Translate(Cursor where, out int x, out int y)
{
x = X + GetGutterWidth() + where.Column - StartColumn;
y = Y + 1 + where.Line - StartLine;
}
public bool HandleInput(EditorInput input)
{
switch (input)
{
case EditorInput.UpArrow:
Cursor = Cursor.Move(Buffer, MoveDirection.Up);
return false;
case EditorInput.DownArrow:
Cursor = Cursor.Move(Buffer, MoveDirection.Down);
return false;
case EditorInput.LeftArrow:
Cursor = Cursor.Move(Buffer, MoveDirection.Left);
return false;
case EditorInput.RightArrow:
Cursor = Cursor.Move(Buffer, MoveDirection.Right);
return false;
case EditorInput.Enter:
Buffer.SplitLine(Cursor);
Cursor = Cursor.Move(Buffer, MoveDirection.Right);
return true;
case EditorInput.Backspace:
if (Cursor.AtFirstColumn(Buffer))
{
if (!Cursor.AtStart(Buffer))
{
Cursor = Cursor.Move(Buffer, MoveDirection.Left);
Buffer.MergeLine(Cursor.Line + 1);
return true;
}
}
else
{
Buffer.RemoveAt(Cursor, 1);
Cursor = Cursor.Move(Buffer, MoveDirection.Left);
return true;
}
return false;
case EditorInput.Tab:
Buffer.InsertAt(Cursor, " ");
Cursor.Column += 4;
return true;
case EditorInput.ShiftTab:
return false;
}
return false;
}
public bool HandleInput(EditorInput input)
{
switch (input)
{
case EditorInput.UpArrow:
Cursor = Cursor.Move(Buffer, MoveDirection.Up);
return false;
case EditorInput.DownArrow:
Cursor = Cursor.Move(Buffer, MoveDirection.Down);
return false;
case EditorInput.LeftArrow:
Cursor = Cursor.Move(Buffer, MoveDirection.Left);
return false;
case EditorInput.RightArrow:
Cursor = Cursor.Move(Buffer, MoveDirection.Right);
return false;
case EditorInput.Enter:
Buffer.SplitLine(Cursor);
Cursor = Cursor.Move(Buffer, MoveDirection.Right);
return true;
case EditorInput.Backspace:
if (Cursor.AtFirstColumn(Buffer))
{
if (!Cursor.AtStart(Buffer))
{
Cursor = Cursor.Move(Buffer, MoveDirection.Left);
Buffer.MergeLine(Cursor.Line + 1);
return true;
}
}
else
{
Buffer.RemoveAt(Cursor, 1);
Cursor = Cursor.Move(Buffer, MoveDirection.Left);
return true;
}
return false;
case EditorInput.Delete:
if (!Cursor.AtLastColumn(Buffer))
{
var newCursor = new Cursor(Cursor.Line, Cursor.Column + 1);
Buffer.RemoveAt(newCursor, 1);
return true;
}
else
{
if (!Cursor.AtLastLine(Buffer))
{
Buffer.MergeLine(Cursor.Line + 1);
return true;
}
}
return false;
case EditorInput.Tab:
Buffer.InsertAt(Cursor, " ");
Cursor.Column += 4;
return true;
case EditorInput.ShiftTab:
return false;
case EditorInput.Home:
Cursor.Column = 0;
return false;
case EditorInput.ControlHome:
Cursor.Line = 0;
Cursor.Column = 0;
return false;
case EditorInput.End:
Cursor.Column = Buffer.Lines[Cursor.Line].Data.Length;
return false;
case EditorInput.ControlEnd:
Cursor.Line = Buffer.Lines.Count - 1;
Cursor.Column = Buffer.Lines[Cursor.Line].Data.Length;
return false;
case EditorInput.PageUp:
int newLine = Cursor.Line - (Height - 1);
if (newLine < 0)
Cursor.Line = 0;
else
Cursor.Line = newLine;
this.StartLine = Cursor.Line;
if (Cursor.Column > Buffer.Lines[Cursor.Line].Data.Length)
Cursor.Column = Buffer.Lines[Cursor.Line].Data.Length;
return true;
case EditorInput.ControlPageUp:
Cursor.Line = StartLine;
Cursor.Column = StartColumn;
return false;
case EditorInput.PageDown:
newLine = Cursor.Line + (Height - 1);
if (newLine > Buffer.Lines.Count)
Cursor.Line = Buffer.Lines.Count - 1;
else
Cursor.Line = newLine;
this.StartLine = Cursor.Line;
if (Cursor.Column > Buffer.Lines[Cursor.Line].Data.Length)
Cursor.Column = Buffer.Lines[Cursor.Line].Data.Length;
return true;
case EditorInput.ControlPageDown:
Cursor.Line = Math.Min(StartLine + Height - 2, Buffer.Lines.Count - 1);
Cursor.Column = Math.Min(StartColumn + Width - GetGutterWidth() - 1, Buffer.Lines[Cursor.Line].Data.Length);
return false;
case EditorInput.ControlUpArrow:
if (StartLine > 0)
StartLine -= 1;
return true;
case EditorInput.ControlDownArrow:
if (StartLine < Buffer.Lines.Count)
StartLine += 1;
return true;
}
return false;
}
public void RemoveAt(Cursor where, int count)
{
var line = Lines[where.Line];
line.Data = line.Data.Remove(where.Column - 1, count);
}
public void InsertAt(Cursor where, string what)
{
var line = Lines[where.Line];
line.Data = line.Data.Insert(where.Column, what);
}
public void Clear()
{
buffer = new Buffer();
cursor = new Cursor(0, 0);
}
