FSliderController class abstract
A controller that manages a slider's active track.
This class should be extended to customize value. By default, the following controllers are provided:
- FContinuousSliderController.new for selecting a single continuous value.
- FContinuousSliderController.range for selecting continuous range.
- FDiscreteSliderController.new for selecting a discrete value.
- FDiscreteSliderController.range for selecting a discrete range.
- Inheritance
-
- Object
- FChangeNotifier
- FSliderController
- Implementers
Constructors
- FSliderController({required FSliderValue value, FSliderInteraction interaction = .tapAndSlideThumb, FSliderActiveThumb thumb = .max})
- Creates a FSliderController for selecting a single value.
- FSliderController.range({required FSliderValue value})
- Creates a FSliderController for selecting a range.
Properties
- active → ({bool max, bool min})
-
Whether the active track is expandable at the min and max edges.
final
- disposed → bool
-
True if this notifier has been disposed.
no setterinherited
- hashCode → int
-
The hash code for this object.
no setterinherited
- hasListeners → bool
-
Whether any listeners are currently registered.
no setterinherited
- interaction → FSliderInteraction
-
The allowed ways to interaction with the slider. Defaults to FSliderInteraction.tapAndSlideThumb.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- value ↔ FSliderValue
-
The slider's active track/value.
getter/setter pair
Methods
-
addListener(
VoidCallback listener) → void -
Register a closure to be called when the object changes.
inherited
-
attach(
double extent, List< FSliderMark> marks) → void - Registers the controller to a slider with the given extent and marks.
-
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).
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
notifyListeners(
) → void -
Call all the registered listeners.
inherited
-
removeListener(
VoidCallback listener) → void -
Remove a previously registered closure from the list of closures that are
notified when the object changes.
inherited
-
reset(
) → void - Resets the controller to its initial state.
-
slide(
double offset, {required bool min}) → void -
Slides the active track to the given
offseton theminedge, in logical pixels. -
step(
{required bool min, required bool expand}) → void -
Moves the active track on the
minedge to the previous/next step. -
tap(
double offset) → bool? - Taps the slider at given offset, in logical pixels, along the track.
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited