public void MoveSelectionUp()
{
if (IsEmpty)
{
return;
}
var rect = PrintedTokens
.Where(t => t.Token.Index + t.Token.Length <= End)
.Select(t => t.Rect)
.DefaultIfEmpty(RectangleF.Empty)
.Last();
if (rect.IsEmpty)
{
return;
}
var tokenAbove = getTokenAbove(new PointF(rect.Right, rect.Top));
Begin = End =
tokenAbove?.Index ?? 0;
onChanged();
}
public void MoveSelectionDown()
{
if (IsEmpty)
{
return;
}
var rect = PrintedTokens
.Where(t => t.Token.Index <= End)
.Select(t => t.Rect)
.DefaultIfEmpty(RectangleF.Empty)
.Last();
if (rect.IsEmpty)
{
return;
}
var tokenBelow = getTokenBelow(rect.Location);
Begin = End =
tokenBelow?.Right ?? Text.Length;
onChanged();
}
public void SetSelection(TextSelection copy)
{
Text = copy.Text;
Begin = copy.Begin;
End = copy.End;
PrintedTokens.Clear();
PrintedTokens.AddRange(copy.PrintedTokens);
onChanged();
}
public void MoveSelectionLeft()
{
if (IsEmpty)
{
return;
}
Begin = End =
PrintedTokens
.Select(t => t.Token.Index)
.Where(F.IsLessThan(End))
.DefaultIfEmpty(0)
.Last();
onChanged();
}
public void MoveSelectionRight()
{
if (IsEmpty)
{
return;
}
Begin = End =
PrintedTokens
.Select(t => t.Token.Index + t.Token.Length)
.Where(F.IsGreaterThan(End))
.DefaultIfEmpty(Text.Length)
.First();
onChanged();
}
