protected override void OnKeyboardInput(InputEventKeyboard e)
{
switch (e.KeyCode)
{
case WinKeys.Tab:
Parent.KeyboardTabToNextFocus(this);
break;
case WinKeys.Enter:
Parent.ActivateByKeyboardReturn(EntryID, Text);
break;
case WinKeys.Back:
if (ReplaceDefaultTextOnFirstKeypress)
{
Text = string.Empty;
ReplaceDefaultTextOnFirstKeypress = false;
}
else if (Text.Length > 0)
{
int escapedLength;
if (EscapeCharacters.TryFindEscapeCharacterBackwards(Text, Text.Length - 1, out escapedLength))
{
Text = Text.Substring(0, Text.Length - escapedLength);
}
else
{
Text = Text.Substring(0, Text.Length - 1);
}
}
break;
default:
if (NumericOnly && !char.IsNumber(e.KeyChar))
{
return;
}
if (ReplaceDefaultTextOnFirstKeypress)
{
Text = string.Empty;
ReplaceDefaultTextOnFirstKeypress = false;
}
if (e.IsChar)
{
string escapedCharacter;
if (EscapeCharacters.TryMatchChar(e.KeyChar, out escapedCharacter))
{
Text += escapedCharacter;
}
else
{
Text += e.KeyChar;
}
}
break;
}
}
// ============================================================================================================
// Text Editing Functions
// ============================================================================================================
public void InsertCharacter(int index, char ch)
{
string escapedCharacter;
int caratAt = index;
string text = Text;
if (EscapeCharacters.TryMatchChar(ch, out escapedCharacter))
{
text = text.Insert(CaratAt, escapedCharacter);
caratAt += escapedCharacter.Length;
}
else
{
text = text.Insert(CaratAt, ch.ToString());
caratAt += 1;
}
Text = text;
CaratAt = caratAt;
}
public void RemoveCharacter(int index)
{
int escapedLength;
if (EscapeCharacters.TryFindEscapeCharacterBackwards(Text, index, out escapedLength))
{
Text = Text.Substring(0, Text.Length - escapedLength);
var carat = index - 1;
var before = index == 0 ? null : Text.Substring(0, index - 1);
var after = Text.Substring(index);
Text = before + after;
CaratAt = carat;
}
else
{
var carat = index - 1;
var before = index == 0 ? null : Text.Substring(0, index - 1);
var after = Text.Substring(index);
Text = before + after;
CaratAt = carat;
}
}
private static string ReplaceEncodedValue(Match match)
{
return(EscapeCharacters.First(kvp => kvp.Value == match.Value).Key);
}
// ============================================================================================================
// Input
// ============================================================================================================
protected override void OnKeyboardInput(InputEventKeyboard e)
{
switch (e.KeyCode)
{
case WinKeys.Tab:
Parent.KeyboardTabToNextFocus(this);
break;
case WinKeys.Enter:
Parent.OnKeyboardReturn(EntryID, Text);
break;
case WinKeys.Back:
if (ReplaceDefaultTextOnFirstKeypress)
{
Text = string.Empty;
ReplaceDefaultTextOnFirstKeypress = false;
}
else if (!string.IsNullOrEmpty(Text))
{
int escapedLength;
if (EscapeCharacters.TryFindEscapeCharacterBackwards(Text, Text.Length - 1, out escapedLength))
{
Text = Text.Substring(0, Text.Length - escapedLength);
}
else
{
Text = Text.Substring(0, Text.Length - 1);
}
}
break;
default:
// place a char, so long as it's within the char count limit.
if (MaxCharCount != 0 && Text.Length >= MaxCharCount)
{
return;
}
if (NumericOnly && !char.IsNumber(e.KeyChar))
{
return;
}
if (ReplaceDefaultTextOnFirstKeypress)
{
Text = string.Empty;
ReplaceDefaultTextOnFirstKeypress = false;
}
if (e.IsChar && e.KeyChar >= 32)
{
string escapedCharacter;
if (EscapeCharacters.TryMatchChar(e.KeyChar, out escapedCharacter))
{
Text += escapedCharacter;
}
else
{
Text += e.KeyChar;
}
}
break;
}
}
