public void Paste()
{
if (Clipboard == null)
{
return;
}
string content = Clipboard.Contents;
if (content != null)
{
StringBuilder buffer = new StringBuilder();
for (int i = 0; i < content.Length; i++)
{
if (MaxLength > 0 && _text.Length + buffer.Length + 1 > MaxLength)
{
break;
}
char c = content[i];
if (!_style.Font.ContainsCharacter(c))
{
continue;
}
if (TextFieldFilter != null && !TextFieldFilter.AcceptChar(this, c))
{
continue;
}
buffer.Append(c);
}
content = buffer.ToString();
if (!_hasSelection)
{
_text = _text.Substring(0, _cursor) + content + _text.Substring(_cursor, _text.Length - _cursor);
UpdateDisplayText();
_cursor += content.Length;
OnTextChanged();
}
else
{
int minIndex = Math.Min(_cursor, _selectionStart);
int maxIndex = Math.Max(_cursor, _selectionStart);
_text = (minIndex > 0 ? _text.Substring(0, minIndex) : "")
+ (maxIndex < _text.Length ? _text.Substring(maxIndex, _text.Length - maxIndex) : "");
_cursor = minIndex;
_text = _text.Substring(0, _cursor) + content + _text.Substring(_cursor, _text.Length - _cursor);
OnTextChanged();
UpdateDisplayText();
_cursor = minIndex + content.Length;
ClearSelection();
}
}
}
protected virtual void OnKeyTyped(KeyCharEventArgs e)
{
if (IsDisabled)
{
return;
}
BitmapFont font = _style.Font;
Stage stage = Stage;
if (stage != null && stage.GetKeyboardFocus() == this)
{
if (e.Character == CharBackspace)
{
if (_cursor > 0 || _hasSelection)
{
if (!_hasSelection)
{
_text = _text.Substring(0, _cursor - 1) + _text.Substring(_cursor);
UpdateDisplayText();
_cursor--;
_renderOffset = 0;
OnTextChanged();
}
else
{
Delete();
}
}
}
else if (e.Character == CharDelete)
{
if (_cursor < _text.Length || _hasSelection)
{
if (!_hasSelection)
{
_text = _text.Substring(0, _cursor) + _text.Substring(_cursor + 1);
UpdateDisplayText();
OnTextChanged();
}
else
{
Delete();
}
}
}
else if ((e.Character == CharTab || e.Character == CharEnterAndroid) && FocusTraversal)
{
KeyboardState keyboard = Keyboard.GetState();
Next(keyboard.IsKeyDown(Keys.LeftShift) || keyboard.IsKeyDown(Keys.RightShift));
}
else if (font.ContainsCharacter(e.Character))
{
if (e.Character != CharEnterDesktop && e.Character != CharEnterAndroid)
{
if (TextFieldFilter != null && !TextFieldFilter.AcceptChar(this, e.Character))
{
e.Handled = true;
return;
}
}
if (MaxLength > 0 && _text.Length + 1 > MaxLength)
{
e.Handled = true;
return;
}
if (!_hasSelection)
{
_text = _text.Substring(0, _cursor) + e.Character
+ _text.Substring(_cursor, _text.Length - _cursor);
UpdateDisplayText();
_cursor++;
OnTextChanged();
}
else
{
int minIndex = Math.Min(_cursor, _selectionStart);
int maxIndex = Math.Max(_cursor, _selectionStart);
_text = (minIndex > 0 ? _text.Substring(0, minIndex) : "")
+ (maxIndex < _text.Length ? _text.Substring(maxIndex, _text.Length - maxIndex) : "");
_cursor = minIndex;
_text = _text.Substring(0, _cursor) + e.Character
+ _text.Substring(_cursor, _text.Length - _cursor);
OnTextChanged();
UpdateDisplayText();
_cursor++;
ClearSelection();
}
}
e.Handled = true;
}
}
