PrismAccordion class
A stack of collapsible sections.
Two behaviours matter and are easy to get wrong: only one section may be open at a time when singleExpansion is set (the settings-screen pattern), and each header must announce whether it is expanded — otherwise a screen reader user hears a list of mysterious buttons.
PrismAccordion(
singleExpansion: true,
sections: const [
PrismAccordionSection(title: 'Delivery', child: Text('…')),
PrismAccordionSection(title: 'Returns', child: Text('…')),
],
)
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- PrismAccordion
Constructors
-
PrismAccordion({Key? key, required List<
PrismAccordionSection> sections, bool singleExpansion = false, Set<int> ? expandedIndices, void onExpansionChanged(Set<int> expanded)?, bool divider = true}) -
Creates an accordion.
const
Properties
- divider → bool
-
Whether to draw a hairline between sections.
final
-
expandedIndices
→ Set<
int> ? -
Overrides the initial expansion state. When null, each section's own
PrismAccordionSection.initiallyExpanded is used.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
-
onExpansionChanged
→ void Function(Set<
int> expanded)? -
Called with the new set of expanded indices.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
-
sections
→ List<
PrismAccordionSection> -
The sections, top to bottom.
final
- singleExpansion → bool
-
Whether opening one section closes the others.
final
Methods
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited
-
createState(
) → State< PrismAccordion> -
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