value property

@override TextEditingValue get value

The current value stored in this notifier.

When the value is replaced with something that is not equal to the old value as evaluated by the equality operator ==, this class notifies its listeners.

Implementation

@override
T get value => _value;

@override set value (TextEditingValue newValue)

Implementation

@override
set value(TextEditingValue newValue) {
  if (newValue.text.isEmpty) newValue = newValue.copyWith(text: fixedInitialString);

  if (newValue.text.length < fixedInitialString.length) return;
  if (newValue.selection.baseOffset < fixedInitialString.length)
    newValue = newValue.copyWith(
      selection: TextSelection(
        baseOffset: fixedInitialString.length,
        extentOffset: max(newValue.selection.extentOffset, fixedInitialString.length),
      ),
    );

  if (newValue.selection.baseOffset > newValue.selection.extentOffset && newValue.selection.extentOffset < fixedInitialString.length)
    newValue = newValue.copyWith(
      selection: TextSelection(
        baseOffset: newValue.selection.baseOffset,
        extentOffset: max(newValue.selection.extentOffset, fixedInitialString.length),
      ),
    );

  if (newValue.text.substring(0, fixedInitialString.length) != fixedInitialString)
    newValue = newValue.copyWith(
      text: text.replaceRange(0, fixedInitialString.length, fixedInitialString),
    );

  super.value = newValue;
}