Expense Type Selector Widget

Fixed-choice selector widget for expense category (mileage, toll, parking, public transport). Enforces mutual-exclusion rules at the UI level to prevent invalid combinations such as simultaneous kilometers and public transit selection. Drives conditional rendering of downstream input widgets.

Feature: Travel & Expense Registration

expense-type-selector-widget

• Present predefined expense type options as tappable chips or radio buttons
• Enforce mutual-exclusion rules between incompatible expense types
• Emit type change events to the parent screen
• Meet WCAG 2.2 AA contrast and 24×24px touch target requirements