Select class

Select Box

It's like the selection box of HTML FORM. defaultValue is the default value when there is no selected value. For instance, options are A, B, C. but none of them are selected. The the value will be empty string. It is empty string by default. So, if the options has empty value(key), then it will produce an assertion of duplicated key. defaultLabel is the default label of default value. selectedValue is the selected value to set on init. options is a map where the key is value and the value of the map is label. example

Select(
  options: widget.forumController.state.widget.editableCategories!,
  defaultValue: '',
selectedValue: widget.post.categoryId,
defaultLabel: 'Select category',
onChanged: (categoryId) => setState(() => widget.post.categoryId = categoryId),
),

Inheritance

• Object
• DiagnosticableTree
• Widget
• StatefulWidget
• Select

Constructors

Select({dynamic defaultValue = '', String defaultLabel = 'Select option', required Map<String, dynamic> options, required StringCallback onChanged, dynamic selectedValue, Key? key})

const

Properties

defaultLabel → String

final

defaultValue → dynamic

final

hashCode → int

The hash code for this object.

no setter, inherited

key → Key?

Controls how one widget replaces another widget in the tree.

final, inherited

onChanged → StringCallback

final

options → Map<String, dynamic>

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

selectedValue → dynamic

final

Methods

createElement() → StatefulElement

Creates a StatefulElement to manage this widget's location in the tree.

inherited

createState() → _SelectState

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