ScrollControllerWrapper class

Implemented types

• ScrollController

Constructors

ScrollControllerWrapper()

Properties

code ↔ int

getter/setter pair

debugLabel → String?

A label that is used in the toString output. Intended to aid with identifying scroll controller instances in debug output.

no setter, override

hasClients → bool

Whether any ScrollPosition objects have attached themselves to the ScrollController using the attach method.

no setter, override

hashCode → int

The hash code for this object.

no setter, override

hasListeners → bool

Whether any listeners are currently registered.

no setter, override

initialScrollOffset → double

The initial value to use for offset.

no setter, override

inner ↔ ScrollController

getter/setter pair

interceptedAttachPosition ↔ ScrollPosition?

getter/setter pair

keepScrollOffset → bool

Each time a scroll completes, save the current scroll offset with PageStorage and restore it if this controller's scrollable is recreated.

no setter, override

lastPosition ↔ ScrollPosition?

getter/setter pair

offset → double

The current scroll offset of the scrollable widget.

no setter, override

onAttach → ScrollControllerCallback?

Called when a ScrollPosition is attached to the scroll controller.

final, inherited

onDetach → ScrollControllerCallback?

Called when a ScrollPosition is detached from the scroll controller.

final, inherited

position → ScrollPosition

Returns the attached ScrollPosition, from which the actual scroll offset of the ScrollView can be obtained.

no setter, override

positions → Iterable<ScrollPosition>

The currently attached positions.

no setter, override

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

showing ↔ bool

getter/setter pair

Methods

addListener(VoidCallback listener) → void

Register a closure to be called when the object changes.

override

animateTo(double offset, {required Duration duration, required Curve curve}) → Future<void>

Animates the position from its current value to the given value.

override

attach(ScrollPosition position) → void

Register the given position with this controller.

override

createScrollPosition(ScrollPhysics physics, ScrollContext context, ScrollPosition? oldPosition) → ScrollPosition

Creates a ScrollPosition for use by a Scrollable widget.

override

debugFillDescription(List<String> description) → void

Add additional information to the given description for use by toString.

override

detach(ScrollPosition position, {bool fake = false}) → void

Unregister the given position with this controller.

override

dispose() → void

Discards any resources used by the object. After this is called, the object is not in a usable state and should be discarded (calls to addListener will throw after the object is disposed).

override

jumpTo(double value) → void

Jumps the scroll position from its current value to the given value, without animation, and without checking if the new value is in range.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

notifyListeners() → void

Call all the registered listeners.

override

onAttachChange(bool b) → void

removeListener(VoidCallback listener) → void

Remove a previously registered closure from the list of closures that are notified when the object changes.

override

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

override

Static Properties

a ↔ int

getter/setter pair