RawAutocomplete<T extends Object> class

A widget for helping the user make a selection by entering some text and choosing from among a list of options.

The user's text input is received in a field built with the fieldViewBuilder parameter. The options to be displayed are determined using optionsBuilder and rendered with optionsViewBuilder.

This is a core framework widget with very basic UI.

This example shows how to create a very basic autocomplete widget using the fieldViewBuilder and optionsViewBuilder parameters.

To create a local project with this code sample, run:
flutter create --sample=widgets.RawAutocomplete.1 mysample

The type parameter T represents the type of the options. Most commonly this is a String, as in the example above. However, it's also possible to use another type with a toString method, or a custom displayStringForOption. Options will be compared using ==, so it may be beneficial to override Object.== and Object.hashCode for custom types.

This example is similar to the previous example, but it uses a custom T data type instead of directly using String.

To create a local project with this code sample, run:
flutter create --sample=widgets.RawAutocomplete.2 mysample

This example shows the use of RawAutocomplete in a form.

To create a local project with this code sample, run:
flutter create --sample=widgets.RawAutocomplete.3 mysample

Constructors

RawAutocomplete({Key? key, required AutocompleteOptionsViewBuilder<T> optionsViewBuilder, required AutocompleteOptionsBuilder<T> optionsBuilder, OptionsViewOpenDirection optionsViewOpenDirection = OptionsViewOpenDirection.down, AutocompleteOptionToString<T> displayStringForOption = defaultStringForOption, AutocompleteFieldViewBuilder? fieldViewBuilder, FocusNode? focusNode, AutocompleteOnSelected<T>? onSelected, TextEditingController? textEditingController, TextEditingValue? initialValue}): Create an instance of RawAutocomplete.
const

Properties

displayStringForOption → AutocompleteOptionToString<T>: Returns the string to display in the field when the option is selected.
final
fieldViewBuilder → AutocompleteFieldViewBuilder?: Builds the field whose input is used to get the options.
final
focusNode → FocusNode?: The FocusNode that is used for the text field.
final
hashCode → int: The hash code for this object.
read-onlyinherited
initialValue → TextEditingValue?: The initial value to use for the text field.
final
key → Key?: Controls how one widget replaces another widget in the tree.
finalinherited
onSelected → AutocompleteOnSelected<T>?: Called when an option is selected by the user.
final
optionsBuilder → AutocompleteOptionsBuilder<T>: A function that returns the current selectable options objects given the current TextEditingValue.
final
optionsViewBuilder → AutocompleteOptionsViewBuilder<T>: Builds the selectable options widgets from a list of options objects.
final
optionsViewOpenDirection → OptionsViewOpenDirection: The direction in which to open the options-view overlay.
final
runtimeType → Type: A representation of the runtime type of the object.
read-onlyinherited
textEditingController → TextEditingController?: The TextEditingController that is used for the text field.
final

Methods

createElement() → StatefulElement: Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<RawAutocomplete<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

Static Methods

defaultStringForOption(Object? option) → String: The default way to convert an option to a string in displayStringForOption.
onFieldSubmitted<T extends Object>(GlobalKey<State<StatefulWidget>> key) → void: Calls AutocompleteFieldViewBuilder's onFieldSubmitted callback for the RawAutocomplete widget indicated by the given GlobalKey.