ScrollAction class

An Action that scrolls the Scrollable that encloses the current primaryFocus by the amount configured in the ScrollIntent given to it.

If Scrollable.incrementCalculator is null for the scrollable, the default for a ScrollIntent.type set to ScrollIncrementType.page is 80% of the size of the scroll window, and for ScrollIncrementType.line, 50 logical pixels.

Inheritance

Constructors

ScrollAction()
Creates a const ScrollAction.

Properties

hashCode int
The hash code for this object. [...]
read-only, inherited
intentKey LocalKey
The unique key for this action. [...]
final, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited

Methods

invoke(FocusNode node, covariant ScrollIntent intent) → void
Called when the action is to be performed. [...]
override
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node. [...]
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
inherited
toDiagnosticsNode({String name, DiagnosticsTreeStyle style}) DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
inherited
toString({DiagnosticLevel minLevel: DiagnosticLevel.info}) String
Returns a string representation of this object.
inherited
toStringShort() String
A brief description of this object, usually just the runtimeType and the hashCode.
inherited

Operators

operator ==(dynamic other) bool
The equality operator. [...]
inherited

Constants

key → const LocalKey
The LocalKey that uniquely connects this action to a ScrollIntent.
const ValueKey<Type>(ScrollAction)