DropdownButtonNoSelDisp<T> class Null safety

Inheritance

Constructors

Properties

autofocus bool
True if this widget will be selected as the initial focus when no other node in its scope is currently focused. [...]
final, inherited
disabledHint Widget?
A preferred placeholder widget that is displayed when the dropdown is disabled. [...]
final, inherited
The background color of the dropdown. [...]
final, inherited
elevation int
The z-coordinate at which to place the menu when open. [...]
final, inherited
focusColor Color?
The color for the button's Material when it has the input focus.
final, inherited
focusNode FocusNode?
An optional focus node to use as the focus node for this widget. [...]
final, inherited
hashCode int
The hash code for this object. [...]
@nonVirtual, read-only, inherited
hint Widget?
A placeholder widget that is displayed by the dropdown button. [...]
final, inherited
icon Widget?
The widget to use for the drop-down button's icon. [...]
final, inherited
iconDisabledColor Color?
The color of any Icon descendant of icon if this button is disabled, i.e. if onChanged is null. [...]
final, inherited
iconEnabledColor Color?
The color of any Icon descendant of icon if this button is enabled, i.e. if onChanged is defined. [...]
final, inherited
iconSize double
The size to use for the drop-down button's down arrow icon button. [...]
final, inherited
isDense bool
Reduce the button's height. [...]
final, inherited
isExpanded bool
Set the dropdown's inner contents to horizontally fill its parent. [...]
final, inherited
itemHeight double?
If null, then the menu item heights will vary according to each menu item's intrinsic height. [...]
final, inherited
items List<DropdownMenuItem>?
The list of items the user can select. [...]
final, inherited
key Key?
Controls how one widget replaces another widget in the tree. [...]
final, inherited
The maximum height of the menu. [...]
final, inherited
onChanged ValueChanged?
Called when the user selects an item. [...]
final, inherited
onTap VoidCallback?
Called when the dropdown button is tapped. [...]
final, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
selectedItemBuilder DropdownButtonBuilder?
A builder to customize the dropdown buttons corresponding to the DropdownMenuItems in items. [...]
final, inherited
style TextStyle?
The text style to use for text in the dropdown button and the dropdown menu that appears when you tap the button. [...]
final, inherited
underline Widget?
The widget to use for drawing the drop-down button's underline. [...]
final, inherited
value → dynamic
The value of the currently selected DropdownMenuItem. [...]
final, inherited

Methods

createElement() StatefulElement
Creates a StatefulElement to manage this widget's location in the tree. [...]
inherited
createState() → _DropdownButtonState
Creates the mutable state for this widget at a given location in the tree. [...]
inherited
debugDescribeChildren() List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children. [...]
@protected, inherited
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. [...]
@nonVirtual, inherited