private void Backspace(KeyEventArgs args)
{
if (InputForm != InputFormEnum.None)
{
var undo = MakeUndoAction();
if (SelectionLength != 0)
{
DeleteSelection();
}
else if (GetCursorPosInt() > 0)
{
if (args.Control)
{
Regex r = new Regex(@"\S*\s*$");
string before = Text.Substring(0, GetCursorPosInt());
var match = r.Match(before);
CursorPos = new CP(match.Index);
SelectionLength = match.Length;
DeleteSelection();
}
else
{
Text = Text.Remove(GetCursorPosInt() - 1, 1);
var lines = GetLines().ToList();
CursorPos = new CP(Math.Max(0, CursorPos.Pos - 1), CursorPos.GetUV(lines).X == 0);
}
Redraw();
}
m_additionUndoAction = null;
undo.SetRedo(m_state);
}
}
private void MoveUp(KeyEventArgs args)
{
if (m_dropDownOpen)
{
ItemIndex--;
}
else
{
if (args.Shift)
{
var selectionEnd = GetCursorPosInt() + SelectionLength;
var point = CursorToXY(CursorPos.GetUV(GetLines().ToList()));
point.Y -= Font.Height;
CursorPos = XYToCursor(point.X, point.Y);
SelectionLength = selectionEnd - GetCursorPosInt();
}
else
{
SelectionLength = 0;
var point = CursorToXY(CursorPos.GetUV(GetLines().ToList()));
point.Y -= Font.Height;
CursorPos = XYToCursor(point.X, point.Y);
}
Redraw();
m_additionUndoAction = null;
}
}
private void Home(KeyEventArgs args)
{
if (args.Shift)
{
var end = GetCursorPosInt() + SelectionLength;
var lines = GetLines().ToList();
var uv = CursorPos.GetUV(lines);
CursorPos = new CP(lines.Take(uv.Y).Select(l => l.Length).Concat(0.Only()).Sum());
SelectionLength = end - CursorPos.Pos;
}
else
{
SelectionLength = 0;
}
if (args.Control)
{
CursorPos = new CP(0);
}
else
{
var lines = GetLines().ToList();
var uv = CursorPos.GetUV(lines);
CursorPos = new CP(lines.Take(uv.Y).Select(l => l.Length).Concat(0.Only()).Sum());
}
m_additionUndoAction = null;
}
private void MoveCaret()
{
//if (InputForm != InputFormEnum.None)
{
var pos = CursorToXY(CursorPos.GetUV(GetLines().ToList()));
if (m_caret != null)
{
m_caret.MoveTo((int)(pos.X), (int)pos.Y - Font.Height / 2);
}
}
}