Expander<T> class
Basic animated expander widget that can be used to expand/collapse a list of items
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- Expander
Constructors
-
Expander({required ExpanderBuilder contentBuilder, required List<
Widget> children, required ValueChanged<bool> onExpansionChanged, required ValueNotifier<bool> isExpanded, required ExpanderBuilder expanderBuilder, bool canExpand = true, Key? key, Curve animationCurve = Curves.easeInOut, Duration animationDuration = const Duration(milliseconds: 500)}) -
Creates an expander widget
const
Properties
- animationCurve → Curve
-
This modulates the animation for the expander when it opens and closes
final
- animationDuration → Duration
-
The duration of the animation for the expander when it opens and closes
final
- canExpand → bool
-
Whether or not the expander can be expanded (has an expander icon)
final
-
children
→ List<
Widget> -
The children for this expander
final
- contentBuilder → ExpanderBuilder
-
The builder for the content of the expander (usually icon and text)
final
- expanderBuilder → ExpanderBuilder
-
The builder for the expander icon (usually an arrow icon or similar)
final
- hashCode → int
-
The hash code for this object.
no setterinherited
-
isExpanded
→ ValueNotifier<
bool> -
The state of the expander
final
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
-
onExpansionChanged
→ ValueChanged<
bool> -
Called when the expander is expanded or collapsed
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited
-
createState(
) → State< Expander< T> > -
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}) → 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