CountdownChip class
Chip that live-counts down to target, formatted through the shared
fmtDur (no reimplemented duration formatting). Ticks every second via
an internal Timer.periodic, cancels it in dispose (and on reaching
zero) so it never lingers past unmount, and calls onDone exactly once
when the countdown reaches zero.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- CountdownChip
Constructors
- CountdownChip({Key? key, required DateTime target, VoidCallback? onDone, IconData icon = Icons.timer_outlined, Color? color, double fontSize = 14, String? semanticLabel})
-
const
Properties
- color → Color?
-
final
- fontSize → double
-
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- icon → IconData
-
final
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- onDone → VoidCallback?
-
Called exactly once, when the countdown reaches zero.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- semanticLabel → String?
-
Overrides the default "Time remaining: mm:ss" Semantics label
(ENH-37). Deliberately NOT a liveRegion — this ticks every second, and
a liveRegion would re-announce it once per second, which is spam, not
help — a screen reader user reads it on demand like any other label.
final
- target → DateTime
-
The moment the countdown reaches zero.
final
Methods
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited
-
createState(
) → State< CountdownChip> -
Creates the mutable state for this widget at a given location in the tree.
override
-
debugDescribeChildren(
) → List< DiagnosticsNode> -
Returns a list of DiagnosticsNode objects describing this node's
children.
inherited
-
debugFillProperties(
DiagnosticPropertiesBuilder properties) → void -
Add additional properties associated with the node.
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent 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 -
A string representation of this object.
inherited
-
toStringDeep(
{String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) → String -
Returns a string representation of this node and its descendants.
inherited
-
toStringShallow(
{String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String -
Returns a one-line detailed description of the object.
inherited
-
toStringShort(
) → String -
A short, textual description of this widget.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited