WidgetStateOperators extension

These operators can be used inside a WidgetStateMap to combine states and find a match.

Example:

final WidgetStatesConstraint constraint = WidgetState.focused | WidgetState.hovered;

In the above case, constraint.isSatisfiedBy(states) is equivalent to:

states.contains(WidgetState.focused) || states.contains(WidgetState.hovered);

Since enums can't extend other classes, WidgetState instead implements the WidgetStatesConstraint interface. This extension ensures that the operators can be used without being directly inherited.

on

Operators

operator &(WidgetStatesConstraint other) → WidgetStatesConstraint

Available on WidgetStatesConstraint, provided by the WidgetStateOperators extension

Combines two WidgetStatesConstraint values using logical "and".
operator |(WidgetStatesConstraint other) → WidgetStatesConstraint

Available on WidgetStatesConstraint, provided by the WidgetStateOperators extension

Combines two WidgetStatesConstraint values using logical "or".
operator ~() → WidgetStatesConstraint

Available on WidgetStatesConstraint, provided by the WidgetStateOperators extension

Takes a WidgetStatesConstraint and applies the logical "not".