RenderEditable constructor

RenderEditable({TextSpan text, @required TextDirection textDirection, TextAlign textAlign: TextAlign.start, Color cursorColor, ValueNotifier<bool> showCursor, bool hasFocus, int maxLines: 1, Color selectionColor, double textScaleFactor: 1.0, TextSelection selection, @required ViewportOffset offset, SelectionChangedHandler onSelectionChanged, CaretChangedHandler onCaretChanged, bool ignorePointer: false, bool obscureText: false, Locale locale, double cursorWidth: 1.0, Radius cursorRadius, bool enableInteractiveSelection: true, @required TextSelectionDelegate textSelectionDelegate })

Creates a render object that implements the visual aspects of a text field.

The textAlign argument must not be null. It defaults to TextAlign.start.

The textDirection argument must not be null.

If showCursor is not specified, then it defaults to hiding the cursor.

The maxLines property can be set to null to remove the restriction on the number of lines. By default, it is 1, meaning this is a single-line text field. If it is not null, it must be greater than zero.

The offset is required and must not be null. You can use new ViewportOffset.zero if you have no need for scrolling.

The enableInteractiveSelection argument must not be null.

Implementation 

RenderEditable({
  TextSpan text,
  @required TextDirection textDirection,
  TextAlign textAlign = TextAlign.start,
  Color cursorColor,
  ValueNotifier<bool> showCursor,
  bool hasFocus,
  int maxLines = 1,
  Color selectionColor,
  double textScaleFactor = 1.0,
  TextSelection selection,
  @required ViewportOffset offset,
  this.onSelectionChanged,
  this.onCaretChanged,
  this.ignorePointer = false,
  bool obscureText = false,
  Locale locale,
  double cursorWidth = 1.0,
  Radius cursorRadius,
  bool enableInteractiveSelection = true,
  @required this.textSelectionDelegate,
}) : assert(textAlign != null),
     assert(textDirection != null, 'RenderEditable created without a textDirection.'),
     assert(maxLines == null || maxLines > 0),
     assert(textScaleFactor != null),
     assert(offset != null),
     assert(ignorePointer != null),
     assert(obscureText != null),
     assert(enableInteractiveSelection != null),
     assert(textSelectionDelegate != null),
     _textPainter = TextPainter(
       text: text,
       textAlign: textAlign,
       textDirection: textDirection,
       textScaleFactor: textScaleFactor,
       locale: locale,
     ),
     _cursorColor = cursorColor,
     _showCursor = showCursor ?? ValueNotifier<bool>(false),
     _hasFocus = hasFocus ?? false,
     _maxLines = maxLines,
     _selectionColor = selectionColor,
     _selection = selection,
     _offset = offset,
     _cursorWidth = cursorWidth,
     _cursorRadius = cursorRadius,
     _enableInteractiveSelection = enableInteractiveSelection,
     _obscureText = obscureText {
  assert(_showCursor != null);
  assert(!_showCursor.value || cursorColor != null);
  _tap = TapGestureRecognizer(debugOwner: this)
    ..onTapDown = _handleTapDown
    ..onTap = _handleTap;
  _longPress = LongPressGestureRecognizer(debugOwner: this)
    ..onLongPress = _handleLongPress;
}