49 lines
1.5 KiB
Dart
49 lines
1.5 KiB
Dart
import 'package:flutter/services.dart';
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class CardNumberFormatter extends TextInputFormatter {
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@override
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TextEditingValue formatEditUpdate(
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TextEditingValue oldValue,
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TextEditingValue newValue,
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) {
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var text = newValue.text.replaceAll(' ', '');
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var buffer = StringBuffer();
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for (int i = 0; i < text.length; i++) {
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buffer.write(text[i]);
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var nonZeroIndex = i + 1;
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if (nonZeroIndex % 4 == 0 && nonZeroIndex != text.length) {
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buffer.write(' '); // Добавляем пробел каждые 4 цифры
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}
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}
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var string = buffer.toString();
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return newValue.copyWith(
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text: string,
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selection: TextSelection.collapsed(offset: string.length),
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);
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}
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}
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class CardMonthInputFormatter extends TextInputFormatter {
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@override
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TextEditingValue formatEditUpdate(
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TextEditingValue oldValue,
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TextEditingValue newValue,
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) {
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var newText = newValue.text;
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if (newValue.selection.baseOffset == 0) return newValue;
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var buffer = StringBuffer();
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for (int i = 0; i < newText.length; i++) {
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buffer.write(newText[i]);
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var nonZeroIndex = i + 1;
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if (nonZeroIndex % 2 == 0 && nonZeroIndex != newText.length) {
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buffer.write('/'); // Добавляем слэш после 2-й цифры
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}
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}
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var string = buffer.toString();
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return newValue.copyWith(
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text: string,
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selection: TextSelection.collapsed(offset: string.length),
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);
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}
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} |