CascadeSelectWidget<T> class Null safety

级联选择框

Inheritance

Constructors

CascadeSelectWidget({Key? key, required int columnNum, required Future<List<T>> buildPickData(int columnIndex, int lastColumnIndex), PickResultCallback<T>? resultCallback, required BuildItem<T> buildItem, List<int>? initIndex, PickerStyle? pickerStyle})

Properties

buildItem BuildItem<T>
子item构造
final
buildPickData Future<List<T>> Function(int columnIndex, int lastColumnIndex)
构造单列数据
final
columnNum int
有几列
final
hashCode int
The hash code for this object.
@nonVirtualread-onlyinherited
initIndex List<int>?
每列初始化的位置
final
key Key?
Controls how one widget replaces another widget in the tree.
finalinherited
pickerStyle PickerStyle?
样式定制
read / write
resultCallback PickResultCallback<T>?
结果回调
final
runtimeType Type
A representation of the runtime type of the object.
read-onlyinherited

Methods

createElement() StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() State<CascadeSelectWidget>
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.
@protectedinherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent 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.
@nonVirtualinherited