Class Dropdown

Dropdown UI element.

Inheritance
object
CallbackEventHandler
Focusable
VisualElement
BaseVisualElement
ExVisualElement
Picker
Picker<DropdownItem, DropdownItem>
Dropdown
Implements
INotifyValueChanged<IEnumerable<int>>
Inherited Members
VisualElement.ExecuteDefaultAction(EventBase)
VisualElement.Focus()
VisualElement.Overlaps(Rect)
VisualElement.ToString()
VisualElement.GetFirstOfType<T>()
VisualElement.GetFirstAncestorOfType<T>()
VisualElement.canGrabFocus
VisualElement.focusController
VisualElement.cacheAsBitmap
CallbackEventHandler.RegisterCallback<TEventType>(EventCallback<TEventType>, TrickleDown)
CallbackEventHandler.RegisterCallback<TEventType, TUserArgsType>(EventCallback<TEventType, TUserArgsType>, TUserArgsType, TrickleDown)
CallbackEventHandler.UnregisterCallback<TEventType>(EventCallback<TEventType>, TrickleDown)
CallbackEventHandler.UnregisterCallback<TEventType, TUserArgsType>(EventCallback<TEventType, TUserArgsType>, TrickleDown)
Namespace: Unity.AppUI.UI
Assembly: Unity.AppUI.dll
Syntax
public class Dropdown : Picker<DropdownItem, DropdownItem>, IEventHandler, ITransform, ITransitionAnimations, IExperimentalFeatures, IVisualElementScheduler, IResolvedStyle, IContextOverrideElement, IAdditionalDataHolder, IInputElement<IEnumerable<int>>, IValidatableElement<IEnumerable<int>>, INotifyValueChanged<IEnumerable<int>>, ISizeableElement, IPressable

Constructors

Dropdown()

Default constructor.

Declaration
public Dropdown()

Dropdown(IList, Action<DropdownItem, int>, Action<DropdownItem, IEnumerable<int>>, int[])

Construct a Dropdown UI element with a provided dynamic collection of items.

Declaration
public Dropdown(IList items, Action<DropdownItem, int> bindItemFunc = null, Action<DropdownItem, IEnumerable<int>> bindTitleFunc = null, int[] defaultIndices = null)
Parameters
Type Name Description
IList items

An items collection.
Action<DropdownItem, int> bindItemFunc

The binding function used to populate display data for each item.
Action<DropdownItem, IEnumerable<int>> bindTitleFunc

The binding function used to populate display data for the title.
int[] defaultIndices

The selected index by default.

Fields

ussClassName

The Dropdown main styling class.

Declaration
public const string ussClassName = "appui-dropdown"
Field Value
Type Description
string

Properties

bindTitle

A method that will be called to bind the title.

Declaration
public Action<DropdownItem, IEnumerable<int>> bindTitle { get; set; }
Property Value
Type Description
Action<DropdownItem, IEnumerable<int>>

Methods

ApplyMultiSelectionMessage(LocalizedTextElement, int)

Apply the Picker localized multi selection message.

Declaration
protected virtual void ApplyMultiSelectionMessage(LocalizedTextElement element, int selectionCount)
Parameters
Type Name Description
LocalizedTextElement element

The LocalizedTextElement to apply the message to.
int selectionCount

The number of selected items.

Implements

UnityEngine.UIElements.INotifyValueChanged<T>

Extension Methods