DropdownField<T extends Object> class
Wraps a DropdownButton in an InputDecorator.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- DropdownField
Constructors
-
DropdownField({Key? key, required Iterable<
T> items, required ValueChanged<T> onChanged, String displayStringForItem(T) = _defaultStringForItem, Widget? icon, bool isDense = true, bool isExpanded = true, String? labelText = '', Widget? prefixIcon, T? value}) -
Wraps a DropdownButton in an InputDecorator.
const
Properties
- displayStringForItem → String Function(T)
-
The string that is displayed for each item.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- icon → Widget?
-
The drop-down button's icon.
final
- isDense → bool
-
Reduce the widgets height.
final
- isExpanded → bool
-
Set the dropdown's inner contents to horizontally fill its parent.
final
-
items
→ Iterable<
T> -
The list of items the user can select.
final
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- labelText → String?
-
Optional text that describes the input field.
final
-
onChanged
→ ValueChanged<
T> -
Called when the user selects an item.
final
- prefixIcon → Widget?
-
An icon that appears before the editable part of the text field.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- value → T?
-
The value of the currently selected DropdownMenuItem.
final
Methods
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited
-
createState(
) → State< DropdownField< 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