Cascader class

Inheritance

Constructors

Cascader({Key? key, bool allowClear = true, bool autoFocus = false, bool bordered = true, bool changeOnSelect = false, List<String> defaultValue = const [], bool disabled = false, Widget displayBuilder(String label, List<CascaderOption> selectedOptions)?, Widget dropdownBuilder(List<Widget> menus)?, Widget? expandIcon, CascaderTrigger expandTrigger = CascaderTrigger.click, Map? fieldNames, Widget getPopupContainer()?, void loadData(List<CascaderOption> selectedOptions)?, int? maxTagCount, Widget? maxTagPlaceholder, Widget notFoundContent = const Text('Not Found'), bool? open, List<CascaderOption> options = const [], String placeholder = '请选择', Alignment placement = Alignment.bottomLeft, ShowSearch? showSearch, CascaderSize size = CascaderSize.middle, CascaderStatus? status, Widget? suffixIcon, Widget tagBuilder()?, List<String>? value, void onChange(String value, List<CascaderOption> selectedOptions)?, void onPopupVisibleChange(String value)?, bool? multiple, String? searchValue, void onSearch(String search)?})
const

Properties

allowClear → bool
final
autoFocus → bool
final
bordered → bool
final
changeOnSelect → bool
final
defaultValue → List<String>
final
disabled → bool
final
displayBuilder → (Widget Function(String label, List<CascaderOption> selectedOptions)?)
final
final
expandIcon → Widget?
final
expandTrigger → CascaderTrigger
final
fieldNames → Map?
final
getPopupContainer → (Widget Function()?)
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
loadData → (void Function(List<CascaderOption> selectedOptions)?)
final
maxTagCount → int?
final
maxTagPlaceholder → Widget?
final
multiple → bool?
final
notFoundContent → Widget
final
onChange → (void Function(String value, List<CascaderOption> selectedOptions)?)
final
onPopupVisibleChange → (void Function(String value)?)
final
onSearch → (void Function(String search)?)
final
open → bool?
final
options → List<CascaderOption>
final
placeholder → String
final
placement → Alignment
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
searchValue → String?
final
showSearch → ShowSearch?
final
size → CascaderSize
final
status → CascaderStatus?
final
suffixIcon → Widget?
final
tagBuilder → (Widget Function()?)
final
value → List<String>?
final

Methods

blur() → void
createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<Cascader>
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
focus() → void
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