protected override void OnKeyDown(KeyEventArgs e)
{
base.OnKeyDown(e);
if (e.Key == Key.Left)
{
if (CurrPlace.CharNum > 0)
{
CurrPlace = CurrPlace.Offset(0, -1);
}
}
else if (e.Key == Key.Right)
{
if (CurrPlace.LineNum < Lines.Count && CurrPlace.CharNum < Lines[CurrPlace.LineNum].Content.Length)
{
CurrPlace = CurrPlace.Offset(0, 1);
}
}
else if (e.Key == Key.Up)
{
if (CurrPlace.LineNum > 0)
{
CurrPlace = CurrPlace.Offset(-1, 0);
}
}
else if (e.Key == Key.Down)
{
if (CurrPlace.LineNum < Lines.Count - 1)
{
CurrPlace = CurrPlace.NextLine();
}
}
}
protected override void OnTextInput(TextCompositionEventArgs e)
{
base.OnTextInput(e);
var t = TextMapEngine.Instance.Map(e.Text);
if (CurrPlace.LineNum >= Lines.Count)
{
Lines.Lines.Add(new Document.Line {
Source = Text, BeginPoint = Text.Length,
});
}
if (e.Text == "\b")
{
if (Text.Length > 0 && Lines[CurrPlace.LineNum].BeginPoint + CurrPlace.CharNum > 0)
{
int offset = 1;
var newPlace = Place.Zero;
if (CurrPlace.CharNum == 0)
{
offset = LineBreakHolder.CurrLineBreak.Length;
newPlace = CurrPlace.LastLine(Lines[CurrPlace.LineNum - 1].Content.Length);
}
else
{
newPlace = CurrPlace.Offset(0, -offset);
}
Text = Text.Remove(Lines[CurrPlace.LineNum].BeginPoint + CurrPlace.CharNum - offset, offset);
CurrPlace = newPlace;
}
}
else
{
Text = Text.Insert(Lines[CurrPlace.LineNum].BeginPoint + CurrPlace.CharNum, t);
if (t == LineBreakHolder.CurrLineBreak)
{
CurrPlace = CurrPlace.NextLine();
}
else
{
CurrPlace = CurrPlace.Offset(0, t.Length);
}
}
}