PrefDropdown<T> class

Dropdown selection

Inheritance

Constructors

PrefDropdown({Key? key, required List<DropdownMenuItem<T>> items, required String pref, AlignmentGeometry alignment = AlignmentDirectional.centerStart, bool autofocus = false, BorderRadius? borderRadius, bool? disabled, Color? dropdownColor, int elevation = 8, bool? enableFeedback, Color? focusColor, FocusNode? focusNode, bool fullWidth = true, Widget? icon, Color? iconDisabledColor, Color? iconEnabledColor, double iconSize = 24.0, bool isDense = false, double? itemHeight = kMinInteractiveDimension, double? menuMaxHeight, ValueChanged<T?>? onChange, TextStyle? style, Widget? subtitle, Widget? title, Widget? underline})
create a Dropdown selection
const

Properties

alignment → AlignmentGeometry
Defines how the hint or the selected item is positioned within the button.
final
autofocus → bool
True if this widget will be selected as the initial focus when no other node in its scope is currently focused.
final
borderRadius → BorderRadius?
Defines the corner radii of the menu's rounded rectangle shape.
final
disabled → bool?
disable the widget interactions
final
The background color of the dropdown.
final
elevation → int
The z-coordinate at which to place the menu when open.
final
enableFeedback → bool?
Whether detected gestures should provide acoustic and/or haptic feedback.
final
focusColor → Color?
The color for the button's Material when it has the input focus.
final
focusNode → FocusNode?
An optional focus node to use as the focus node for this widget.
final
fullWidth → bool
Use all the available width
final
hashCode → int
The hash code for this object.
no setterinherited
icon → Widget?
The widget to use for the drop-down button's icon.
final
iconDisabledColor → Color?
The color of any Icon descendant of icon if this button is disabled,
final
iconEnabledColor → Color?
The color of any Icon descendant of icon if this button is enabled,
final
iconSize → double
The size to use for the drop-down button's down arrow icon button.
final
isDense → bool
Reduce the button's height.
final
itemHeight → double?
If null, then the menu item heights will vary according to each menu item's intrinsic height.
final
items → List<DropdownMenuItem<T>>
The items to display
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
The maximum height of the menu.
final
onChange → ValueChanged<T?>?
Called when the value changes
final
pref → String
The preference key
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
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
subtitle → Widget?
The subtitle
final
title → Widget?
The title
final
underline → Widget?
The widget to use for drawing the drop-down button's underline.
final

Methods

createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → PrefDropdownState<T>
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