ButtonStateProperty<T> typedef

ButtonStateProperty<T> = T Function(BuildContext context, Set<WidgetState> states)

Function signature for button state-dependent properties.

ButtonStateProperty is a function type that resolves a property value based on the current widget states (hovered, pressed, focused, disabled, etc.) and build context. This allows button styles to dynamically adapt their appearance based on user interactions.

Parameters:

• context: The build context for accessing theme data
• states: Set of current widget states (e.g., {WidgetState.hovered, WidgetState.pressed})

Returns the property value of type T appropriate for the current states.

Example:

ButtonStateProperty<Color> backgroundColor = (context, states) {
  if (states.contains(WidgetState.disabled)) return Colors.grey;
  if (states.contains(WidgetState.pressed)) return Colors.blue.shade700;
  if (states.contains(WidgetState.hovered)) return Colors.blue.shade400;
  return Colors.blue;
};

Implementation

typedef ButtonStateProperty<T> = T Function(
    BuildContext context, Set<WidgetState> states);