InputFeatureVisibility class abstract

Abstract base class for controlling input feature visibility.

Defines when UI elements like clear buttons, password toggles, or other input features should be visible based on text field state. Supports logical operations (AND, OR, NOT) to combine multiple visibility conditions.

Example:

// Show clear button when text is not empty and field is focused
final visibility = InputFeatureVisibility.textNotEmpty &
                  InputFeatureVisibility.focused;

Constructors

InputFeatureVisibility(): Creates an InputFeatureVisibility.
const
InputFeatureVisibility.and(Iterable<InputFeatureVisibility> features): Creates a visibility condition that is true when all features are true.
const

factory
InputFeatureVisibility.not(InputFeatureVisibility feature): Creates a visibility condition that inverts the given feature.
const

factory
InputFeatureVisibility.or(Iterable<InputFeatureVisibility> features): Creates a visibility condition that is true when any features is true.
const

factory

Properties

hashCode → int: The hash code for this object.
no setterinherited
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited

Methods

and(InputFeatureVisibility other) → InputFeatureVisibility: Combines this visibility with other using logical AND.
canShow(TextFieldState state) → bool: Checks if the feature can be shown in the current state.
getDependencies(TextFieldState state) → Iterable<Listenable>: Gets the listenable dependencies for this visibility condition.
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
or(InputFeatureVisibility other) → InputFeatureVisibility: Combines this visibility with other using logical OR.
toString() → String: A string representation of this object.
inherited

Operators

operator &(InputFeatureVisibility other) → InputFeatureVisibility: Operator form of and. Combines conditions with logical AND.
operator ==(Object other) → bool: The equality operator.
inherited
operator |(InputFeatureVisibility other) → InputFeatureVisibility: Operator form of or. Combines conditions with logical OR.
operator ~() → InputFeatureVisibility: Inverts this visibility condition using logical NOT.

Constants

always → const InputFeatureVisibility: Visibility condition: always visible.
focused → const InputFeatureVisibility: Visibility condition: text field has focus.
hasSelection → const InputFeatureVisibility: Visibility condition: text field has selected text.
hovered → const InputFeatureVisibility: Visibility condition: text field is being hovered.
never → const InputFeatureVisibility: Visibility condition: never visible.
textEmpty → const InputFeatureVisibility: Visibility condition: text field is empty.
textNotEmpty → const InputFeatureVisibility: Visibility condition: text field is not empty.