Attr<AV> class abstract

The specification of an aesthetic attribute.

Aesthetic attributes determin how an element item is perceived. An attribute value usually represent an variable value of a tuple. the encoding rules form data to attribute value can be defined in various ways (See details in the properties).

The generic AV is the type of attribute value.

Implementers

• ChannelAttr
• LabelAttr

Constructors

Attr({AV? value, AV encoder(Tuple)?, Map<String, Map<bool, SelectionUpdater<AV>>>? updaters})

Creates an aesthetic attribute.

Properties

encoder ↔ (AV Function(Tuple)?)

Indicates how to get attribute form a tuple directly.

getter/setter pair

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

updaters ↔ Map<String, Map<bool, SelectionUpdater<AV>>>?

Attribute updaters when a selection occurs.

getter/setter pair

value ↔ AV?

Indicates a attribute value for all tuples directly.

getter/setter pair

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

override