AutoScrollControllerMixin mixin
- Superclass constraints
- Implemented types
Properties
- beginGetter → AxisValueGetter
-
used to choose which direction you are using.
e.g. axis == Axis.horizontal ? (r) => r.left : (r) => r.top
no setteroverride
- debugLabel → String?
-
A label that is used in the toString output. Intended to aid with
identifying scroll controller instances in debug output.
finalinherited
- endGetter → AxisValueGetter
-
no setteroverride
- hasClients → bool
-
Whether any ScrollPosition objects have attached themselves to the
ScrollController using the attach method.
no setterinherited
- hashCode → int
-
The hash code for this object.
no setterinherited
- hasListeners → bool
-
Whether any listeners are currently registered.
no setterinherited
- hasParentController → bool
-
check if there is a parent controller
no setteroverride
- initialScrollOffset → double
-
The initial value to use for offset.
no setterinherited
- isAutoScrolling → bool
-
detect if it's in scrolling (scrolling is a async process)
no setteroverride
- keepScrollOffset → bool
-
Each time a scroll completes, save the current scroll offset with
PageStorage and restore it if this controller's scrollable is recreated.
finalinherited
- offset → double
-
The current scroll offset of the scrollable widget.
no setterinherited
- onAttach → ScrollControllerCallback?
-
Called when a ScrollPosition is attached to the scroll controller.
finalinherited
- onDetach → ScrollControllerCallback?
-
Called when a ScrollPosition is detached from the scroll controller.
finalinherited
- parentController ← ScrollController
-
used to chaining parent scroll controller
no getteroverride
- position → ScrollPosition
-
Returns the attached ScrollPosition, from which the actual scroll offset
of the ScrollView can be obtained.
no setterinherited
-
positions
→ Iterable<
ScrollPosition> -
The currently attached positions.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- suggestedRowHeight → double?
-
used to quick scroll to a index if the row height is the same
no setteroverride
-
tagMap
→ Map<
int, AutoScrollTagState< AutoScrollTag> > -
all layout out states will be put into this map
final
- viewportBoundaryGetter → ViewportBoundaryGetter
-
used to make the additional boundary for viewport
e.g. a sticky header which covers the real viewport of a list view
no setteroverride
Methods
-
addListener(
VoidCallback listener) → void -
Register a closure to be called when the object changes.
inherited
-
animateTo(
double offset, {required Duration duration, required Curve curve}) → Future< void> -
Animates the position from its current value to the given value.
inherited
-
attach(
ScrollPosition position) → void -
Register the given position with this controller.
override
-
cancelAllHighlights(
) → void -
cancel all highlight item immediately.
override
-
createScrollPosition(
ScrollPhysics physics, ScrollContext context, ScrollPosition? oldPosition) → ScrollPosition -
Creates a ScrollPosition for use by a Scrollable widget.
inherited
-
debugFillDescription(
List< String> description) → void -
Add additional information to the given description for use by toString.
inherited
-
detach(
ScrollPosition position) → 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).
inherited
-
highlight(
int index, {bool cancelExistHighlights = true, Duration highlightDuration = _highlightDuration, bool animated = true}) → Future -
highlight the item
override
-
isIndexStateInLayoutRange(
int index) → bool -
check if the state is created. that is, is the indexed widget is layout out.
NOTE: state created doesn't mean it's in viewport. it could be a buffer range, depending on flutter's implementation.
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.
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
-
scrollToIndex(
int index, {Duration duration = scrollAnimationDuration, AutoScrollPosition? preferPosition}) → Future -
scroll to the giving index
override
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited