smart_input_formatters 0.0.2

A set of high-performance Flutter TextInputFormatters for currency, math expressions, and auto-decimal shifting with cursor stability.

Changelog

All notable changes to this project will be documented in this file.

This project adheres to Semantic Versioning.

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0.0.2 - 2026-04-01

Added

• allowExpression parameter on SmartAmountFormatter — controls whether math operators (+, -, *, /, %) are accepted as valid input. Defaults to true to preserve existing behaviour.
• FilteringTextInputFormatter.deny is now inserted as the first step in the formatter pipeline, rejecting any character outside the allowed set (digits, configured separators, and optionally operators) before any downstream formatter processes the input.

Fixed

• Junk characters (letters, symbols) could previously pass through the pipeline unchecked. The new deny filter closes this gap.

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0.0.1 - 2026-03-15

Initial release.

Added

• SmartAmountFormatter — composable entry point that assembles a List<TextInputFormatter> for currency and numeric input fields.
• CalculatorNormalizer — normalises raw input by mapping x → * and remapping . or , to the configured decimalSep.
• LeadingZeroIntegerTrimmerFormatter — strips redundant leading zeros from the integer part of simple numeric values.
• AutoDecimalShiftFormatter — cash-register style decimal shifting; digits are shifted right as the user types so the decimal separator is inserted automatically at the configured decimalDigits position.
• GroupSeparatorFormatter — inserts thousands separators into the integer part of each numeric segment with cursor-stable offset recalculation.
• Support for locale-aware separator configuration via decimalSep and groupSep parameters.
• Support for expression input (12.50+3.00) across all formatters.