IndicatorNotifier class abstract

Indicator data and trigger notification.

Inheritance
Implementers

Constructors

IndicatorNotifier.new({required Indicator indicator, required TickerProvider vsync, required ValueNotifier<bool> userOffsetNotifier, required CanProcessCallBack onCanProcess, required bool noMoreProcess, bool waitTaskResult = true, FutureOr task()?})

Properties

actualSecondaryTriggerOffset → double
Actual secondary trigger offset. secondaryTriggerOffset + safeOffset
no setter
actualTriggerOffset → double
Actual trigger offset. triggerOffset + safeOffset
no setter
axis → Axis?
no setter
axisDirection → AxisDirection?
no setter
boundaryOffset → double
Calculate distance from boundary.
no setter
clamping → bool
no setter
hapticFeedback → bool
no setter
hashCode → int
The hash code for this object.
no setterinherited
hasListeners → bool
Whether any listeners are currently registered.
no setterinherited
hasSecondary → bool
no setter
hitOver → bool
no setter
infiniteHitOver → bool
no setter
infiniteOffset → double?
no setter
iPosition → IndicatorPosition
no setter
mode → IndicatorMode
no setter
modeLocked → bool
Is the state locked.
no setter
noMoreLocked → bool
State lock when no more.
no setter
offset → double
no setter
outOfRange → bool
Out of scroll area.
no setter
overExtent → double
Keep the extent of the Scrollable out of bounds.
no setter
position → ScrollMetrics
no setter
processedDuration → Duration
no setter
readySpringBuilder → SpringBuilder?
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
safeArea → bool
no setter
safeOffset → double
no setter
secondaryCloseTriggerOffset → double
no setter
secondaryDimension → double
no setter
secondaryLocked → bool
no setter
secondaryTriggerOffset → double?
no setter
secondaryVelocity → double
no setter
spring → SpringDescription
no setter
triggerOffset → double
no setter
userOffsetNotifier → ValueNotifier<bool>
User triggered notifier. Record user triggers and releases.
final
velocity → double
no setter
vsync → TickerProvider
Used to provide clamping animation.
final

Methods

addListener(VoidCallback listener) → void
Register a closure to be called when the object changes.
inherited
addModeChangeListener(ModeChangeListener listener) → void
Add mode change listener.
calculateOffsetWithPixels(ScrollMetrics position, double pixels) → double
Calculate the overscroll offset with pixels.
callTask({required double overOffset, Duration? duration, Curve curve = Curves.linear}) → void
Automatically trigger task. overOffset Offset beyond the trigger offset, must be greater than 0. duration See ScrollPosition.animateTo. curve See ScrollPosition.animateTo.
createBallisticSimulation(ScrollMetrics position, double velocity) → Simulation?
Create a ballistic simulation. Use for clamping.
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
listenable() → ValueListenable<IndicatorNotifier>
Indicator listenable.
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
removeModeChangeListener(ModeChangeListener listener) → void
Remove mode change listener.
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited