TextAttribute class abstract

An attribute to apply to a span of text.

Applying an attribute to a span of text can format or add gesture handlers to that span.

If you extend this class it is very strongly recommended you override the equality operator or use a singleton for the attribute, because the span system uses equality tests for operations like SpanList.merge and SpanList.isApplied/SpanList.willApply.

Attributes contain expandRules to indicate how spans with the attribute should behave when an insertion happens at its boundaries.

Implementers

• AutoFormatTextAttribute
• LinkAttribute
• ThemedTextAttribute

Constructors

TextAttribute()

Base constant constructor for inheritors that have a constant constructor.

const

Properties

expandRules → SpanExpandRules

Rules that determine how spans with this attribute grow when insertions happend at their boundaries.

no setter

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

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

resolve(BuildContext context) → TextAttributeValue

Returns a text attribute value that can depend on context.

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited