/// <summary>
/// Public constructor that creates a text field, with layout controlled with X, Y, Width and Height.
/// </summary>
/// <param name="text">Initial text contents.</param>
public TextField(ustring text)
{
if (text == null)
{
text = "";
}
this.text = TextModel.ToRunes(text);
point = text.Length;
CanFocus = true;
}
/// <summary>
/// Public constructor that creates a text field at an absolute position and size.
/// </summary>
/// <param name="x">The x coordinate.</param>
/// <param name="y">The y coordinate.</param>
/// <param name="w">The width.</param>
/// <param name="text">Initial text contents.</param>
public TextField(int x, int y, int w, ustring text) : base(new Rect(x, y, w, 1))
{
if (text == null)
{
text = "";
}
this.text = TextModel.ToRunes(text);
point = text.Length;
first = point > w ? point - w : 0;
CanFocus = true;
}
bool SetText(Rune key)
{
var text = TextModel.ToRunes(Text);
var newText = text.GetRange(0, CursorPosition);
newText.Add(key);
if (CursorPosition < FieldLen)
{
newText = newText.Concat(text.GetRange(CursorPosition + 1, text.Count - (CursorPosition + 1))).ToList();
}
return(SetText(ustring.Make(newText)));
}
/// <summary>
/// Public constructor that creates a text field at an absolute position and size.
/// </summary>
/// <param name="x">The x coordinate.</param>
/// <param name="y">The y coordinate.</param>
/// <param name="w">The width.</param>
/// <param name="text">Initial text contents.</param>
public TextField(int x, int y, int w, ustring text) : base(new Rect(x, y, w, 1))
{
if (text == null)
{
text = "";
}
this.text = TextModel.ToRunes(text);
CursorPosition = text.Length;
first = CursorPosition > w ? CursorPosition - w : 0;
CanFocus = true;
}
public override bool ProcessKey(KeyEvent kb)
{
switch (kb.Key)
{
case Key.DeleteChar:
case Key.ControlD:
SetText('0');
break;
case Key.Delete:
case Key.Backspace:
SetText('0');
DecCursorPosition();
break;
// Home, C-A
case Key.Home:
case Key.ControlA:
CursorPosition = 1;
break;
case Key.CursorLeft:
case Key.ControlB:
DecCursorPosition();
break;
case Key.End:
case Key.ControlE: // End
CursorPosition = FieldLen;
break;
case Key.CursorRight:
case Key.ControlF:
IncCursorPosition();
break;
default:
// Ignore non-numeric characters.
if (kb.Key < (Key)((int)'0') || kb.Key > (Key)((int)'9'))
{
return(false);
}
if (SetText(TextModel.ToRunes(ustring.Make((uint)kb.Key)).First()))
{
IncCursorPosition();
}
return(true);
}
return(true);
}
void Initialize(ustring text, int w)
{
if (text == null)
{
text = "";
}
this.text = TextModel.ToRunes(text);
point = text.RuneCount;
first = point > w ? point - w : 0;
CanFocus = true;
Used = true;
WantMousePositionReports = true;
}
